外文文献1
单片机外文文献 (1)

单片机系统广义地说,微处理系统是用于处理信息的,这种信息可以是电话交谈,仪器读数或企业帐户,但是各种情况下都涉及相同的主要操作:信息处理、存储和传递。
在常规的电子设计中,这些操作都是以功能平台方式组合起来的,例如计数器,无论是电子还是机械的,都要存储当前值,并按要求将该值增1。
诸如采用计数器的电子钟之类的任一系统要使其存储和处理能力遍布整个系统,因为每个计数器都能存储和处理一些数字。
当前微处理化系统与上述的常规方法不同,它将处理,存储和传输三个功能分离形成不同的系统单元。
这种形成三个主要单元的分离方法是冯-诺依曼在20世纪40年代所设想出来的,并且是针对微计算机的设想。
从此几乎所有制成的计算机都是用这种结构设计的,尽管包含宽广的物理形式,从根本上来说他们均是具有相同的基本设计。
在微处理器系统中,处理是由微处理器本身完成的。
存储是利用存储器电路,而进入和出自系统的信息传输则是利用特定的输入/输出(I/O)电路。
要在一个微处理器化时钟中找出执行计数功能的一个特殊硬件是不可能的,因为时间存储在存储器中,而在固定的时间间隔下由微处理器控制增值。
但是,规定系统运转过程的软件包含实现计数器功能的单元。
由于系统几乎完全由软件所定义,所以对微处理器结构和其辅助电路这种看起来非常抽象的处理方法使其在应用时非常灵活。
这种设计过程主要是软件工程,而且在生产软件时,就会遇到产生于常规工程中相似的构造和维护问题。
图1.1 微型计算机的三个组成部分图1.1显示出了微型计算机中这三个单元是如何按照机器中的信息通信方式而联接起来的。
该系统由微处理器控制,它管理自己与存储器和输入/输出单元的信息传输。
外部的连接与工程系统的其余部分(即非计算机部分)有关。
尽管图中显示的只有一个存储单元,实际中有RAM和ROM两种不同的存储器被使用。
由于概念上的计算机存储器更像一个公文柜,上述的“存储器”一词是非常不恰当的;信息存放在一系列已标号的“箱子”中,而且可按问题由“箱子”的序列号进行信息的参考定位。
客户关系管理外文文献1

A STUDY OF CUSTOMER-ORIENTED SERVICE ENHANCEMENT SYSTEM(COSES) FOR THE PUBLIC SECTORChi-Kuang Chen*,Chang-Hsi Yu* and Hsiu-Chen Chang** *Department of Industrial Engineering and Management, Yuan Ze University, Taiwan.**Department of Management, National Kaohsiung First University of Science andTechnology, Taiwan.ABSTRACTThe objective of this paper is to develop a customer-oriented service model for the public sector. Despite customer orientation having become popular since 1980, we found most studies were done for the private sector only. In addition, they placed much emphasis on service operation management rather than system design. In this paper, we propose a customer-oriented service enhancement system (COSES) for the public sector, which employs two dimensions: (1) customer-oriented service system design and management, (2) organizational culture fostering. In terms of COSES model, the best practices of public agencies were empirically examined in what and how the customer-oriented service activities were developed.Keywords: Public Management, Public Service, Customer-Orientation, Service System1.INTRODUCTIONCustomer orientation has become a popular slogan, taking pride of place in the strategic statements of many public and private sector organizations. In the UK, for example, an increasing number of public-sector organizations are demonstrating that customer orientation is no longer the exclusive preserve of the private sector (Nwankwo and Richardson, 1994). It is the same situation in USA. This concept was emphasized in the National Performance Review Project entitled ‘Putting Customers First’ (Gore, 1993). The terminology of customer orientation is usually described as an organizational culture that stresses the customer as the focal point of strategic planning and execution (Deshpande et al., 1993; Jaworski et al., 2000; Steinman et al., 2000).Despite the prevalence of customer orientation, we found most studies were done for private enterprise rather than the public sector (e.g., Deshpande et al., 1993; Nwankwo, 1995; Yasin and Yavas, 1999; Brown et al., 2002). Many studies suggested that there are differences between the private enterprise and the public sector (e.g., Wamsley, 1990; Carnevale, 1995; Mintzberg, 1996; Zeppou and Sptirakou, 2003). A way of doing things in private enterprises may not be suited for the public sector. The public service encountered more challenges in meeting the customer needs than the private enterprise. In particular, fairness and justice are the ultimate principles of the public sector. From a scientific standpoint, it is necessary to further investigate the customer orientation and its influence on the public sector.In addition, we found a bunch of action plans in promoting customer orientation generally place much emphasis on service operation management rather than service system design. Brady and Cronin (2001) indicated that there is still a lack of research in regard to how suchan orientation system is developed. Studies on this topic were either related to the evaluation of employee service performance and physical goods, or examined the effects of organizational quality, customer satisfaction, value attribution and outcome behaviors.In view of above argumentation, we suggest that a comprehensive service system should not only focus on service operation management, but also need to trace its original core concept to precede management from a system design viewpoint. In this paper, we intend to empirically examine the best practices of public agencies in Taiwan by using a two-dimensional model. The two-dimensional model includes: (1) system design and management, (2) organizational culture fostering. The purpose of this paper is to examine in what and how the customer-oriented service activities were developed in the public agencies. 2.LITERATURE REVIEWBefore figuring out the conceptual framework of this study, it is necessary to review the previous literature regarding to concepts and models of customer-oriented service management and customer orientation in public sector.2.1. Concepts and Models of customer-oriented service managementThe terminology of customer-orientation originated from Total Quality Management (TQM). This means that satisfying customer needs is a high level organizational objective (Oakland, 1993; Price, 1991). Customer orientation has been defined in different ways (e.g., Kohli and Jaworski, 1990; Narver and Slater, 1990; Webster, 1988). It is usually associated with other terminologies, such as market orientation, customer focus, customer driven, and customer centered. According to Webster’s definition (1994), customer orientation is the business of putting the customer first in everything the company does and organizing all activities around the basic objective of delivering superior value. Beyond this, some authors assert that the center of strategic focus remains putting customers first, a major plank of marketing (e.g., Felton, 1959; Payne, 1988; McGee and Spiro, 1988). It has also become a general concept that organizations should be more customer orientated to deliver better service quality and to enhance customer satisfaction (Hartline et al., 2000).Based on the relevant literature published in the last decade, we found a couple of models and instruments tried to deliver this concept. In the following, we summarize these models into three types: (1) the conceptual model; (2) the scale construct model; and (3) the cause-effect model.The conceptual modelThis model attempts to develop a conceptual framework to deliver customer orientation. For example, Nwankwo (1995) provided a framework to guide organizational management through the process of building a customer-driven philosophy. It contained four elements: (1) definition; (2) sensitivity; (3) measurement; and (4) implementation. Yasin and Yavas (1999) proposed a practical framework that integrated some tools to enhance the efficiency and customer orientation of service delivery systems. It consisted of: (1) root cause analysis; (2) benchmarking; (3) process reengineering; and (4) continuous improvement. Jiang and Chen (2002) proposed a customer-oriented service model for the public sector. It contains a five-stage sequence of system design and management: (1) customer identification; (2) customer needs survey; (3) service system design; (4) service delivery; and (5) service recovery. Jiang and Chen suggested that the five-stage model can be used to examine the organizational strategic planning, system design and operational management for promoting customer-oriented services.The scale construct modelThe scale construct model attempts to measure customer orientation directly at the individual level. For instance, Saxe and Weitz (1982) proposed a 24-item scale that was designed to measure how a salesperson seeks to increase long-term customer satisfaction. The other example of this type, proposed by Lozano (2000), is a checklist to measure the status of customer orientation of a library toward its market.The cause-effect modelThe scale cause-effect model attempts to investigate influential factors and their relationships to customer orientation. For example, Brady and Cronin (2001) investigated the effects of being customer oriented on service performance perceptions and outcome behaviors. Responses from 649 consumers indicated that customer orientation was directly related to customers’ evaluations of employee service performance, physical goods, and servicescapes. Indirect effects included organizational quality, customer satisfaction, value attributions, and outcome behaviors. Brown et al. (2002) investigated the mediatory role of customer orientation in a hierarchical model of the influence of personality traits on self-rated and supervisor-rated performance. The results support a partially mediated hierarchical model.According to above literature, several findings can be summarized: (1) customer orientation has become a customer-centered philosophy for an excellent organization, however the empirical study was rare; (2) most of the models were developed for the private sector rather than the public sector; (3) many studies merely focused on the management of service operations, however the issues of service system design were lack of investigation; (4) the importance of the organizational culture fostering in developing the customer-oriented service system was often neglected. In the following, we further review the literature regarding to the customer-oriented service in the public sector.2.2 Customer-orientation in the public serviceThe concept of customer-orientation in the public service was raised several decades ago. For example, Appleby (1992, p. 147) pointed out that the governmental characters in 1945 has been stated the necessity of customer orientation in the public sector. However, this concept in 1990 has had a different manner from the former. Learning from private enterprise becomes the main stream. For example, Clinton, ex-president of USA, signed the executive order 12826 in 1993 to request federal government to promote standards for serving American people. This executive order is: (1) identify the customers; (2) survey the customer needs; (3) post service standard and measure results; (4) benchmark customer service against the best practice; (5) survey front-line employee on barrier; (6) provide customer with choice; (7) make system easily accessible; (8) provide means to address complaints (Gore, 1997, pp. 10-12).In Australia, the Capital Territory Government of Canberra proposed the “customer service standard” of the ACT public service. It is composed of the following nine items (Australian Capital Territory Government, 1999): (1) know your customer base; (2) focus on customer needs; (3) use a can-do approach; (4) customer friendly staff; (5) customer-focused public contact area; (6) comprehensive complaints handling process; (7) customer value performance measures and targets;(8) telephone and counter techniques; (9) continue improving.Besides USA and Australia, many countries have proposed the similar reform projects to enhance the quality of public services. Taiwan launched the Total Service Quality Management Project in 1997.According to Osborne and Gaebler’s viewpoint, a customer-oriented public agency can benefit (Osborne and Gaebler, 1992, pp. 181-186): (1) customer-driven systems force service providers to be accountable to their customers; (2) customer-driven systems depoliticize thechoice-of-provider decision; (3) customer-driven systems stimulate more innovation; (4) customer-driven systems give people choices between different kinds of services; (5) customer-driven systems waste less, because they match supply to demand; (6) customer-driven systems empower customers to make choices, and empowered customers are more committed customers; and (7) customer-driven systems create greater opportunities for equity.Despite the popularity of the concept in public sector, Weissman (1991, p. 296) argued that some provisions are needed before carrying out a customer orientation project: (1) organizations and their stakeholders share common values about ends; (2) rationality is the single factor that determines the structure of programs in agencies. Status and power are not determining factors. There is no limit on rationality; (3) organizations and programs can and will tolerate, as well as adjust easily to, attacks on themselves and their survival; (4) the structure and reward systems of a government agency support change and adjustment, innovations and alteration; (5) there is a willingness on the part of public agencies to accept limitation on their autonomy, to yield power to the less powerful.Besides the provisions, some problematic issues were found in carrying out such a projects. For instance, the projects generally placed too much emphasis on the service operation management rather than service system design. This means that the way of how to develop a customer-oriented public service system is still not found. In addition, an empirical study by Chao (2003) found that the change of organizational culture is one of the issues that is hard to achieve. In this study, we intend to use a scientific approach to deal with these problematic issues.3.RESEARCH FRAMEWORKBased on the review of the literature, we realized that customer orientation has become crucial for a successful service organization. However, it still exists that there are many problems at the current time. In this study, we intend to propose a comprehensive model to examine the issues involving what and how the best practices of customer-oriented activities in the public sector were developed. In the comprehensive model, a two-dimension approach rather than the single-dimension approach in previous studies is employed. The two dimensions are: (1) system design and management, (2) fostering organizational culture (see Figure 1).Figure 1 Conceptual research frameworkThe comprehensive model is called customer-oriented service enhancement system. Here, we take the acronym of customer-oriented service enhancement system as COSES. COSES indicates ‘coze’ or ‘cose’, which implies to treat, or to talk with, customers in a warm and cozy manner. The reason we employ an additional dimension is that it has been widely acknowledged in the literature that a successful organization always has an embedded customer-oriented organizational culture (e.g., Houston, 1986; Parasuraman, 1987; Shapiro, 1988; Webster, 1988; Deshpande et al., 1993; Athanassopoulos, 2000). Figure 1 presents the conceptual framework of COSES model. The meanings of this conceptual framework are further described in the following.First of all, the box of organizational vision, policy, and strategy is placed on the left-hand side of Figure 1. It indicates the driven force to direct an organization to develop and to manage a customer-oriented service system.Second, the dot-line box of Figure 1, which is the kernel of this study, indicates a customer-oriented service enhancement system (COSES) for public sector. In COSES model, we develop a five-stage of service system design and management. These comprise: (1) customer identification – the public agency recognizes its customers; (2) customer needs survey – the public agency focuses on customer needs and customer voice; (3) service system design – the public agency develops the service system and process to meet the customer needs; (4) service delivery – the employees in a public agency deliver service to customers; and (5) service recovery – the public agency has an effective mechanism to deal with the customer complaints. The other dimension of COSES model is organizational culture fostering, which is located in the bottom of the dot-line box. In this dimension, we propose a three-layer model: (1) basic assumptions – employees recognize the importance of public service; (2) organizational values – provision of high quality public services has become the common belief all over an organization; (3) system and behavior – the organizational structure, system, regulation, standard operation process, and other behaviors have been well established.Third, service quality and customer satisfaction are placed on the right-hand side of Figure 1, which indicate the outcomes of service. It has been empirically proved that the morecustomer orientation organization is followed by the better service quality and customer satisfaction (Hartline et al., 2000; Jiang and Chen, 2002).4.RESEARCH DESIGNThis section presents research subject, interview outline design, procedure, and data analysis scheme. To achieve the research objective, the method of multiple-case study is chosen in this study. Further, in-depth interview and content analysis are used in research data collection and analysis.4.1. Research subjectsIn light of recruiting the appropriate research subjects in a multiple-case study, Markus (1989) suggested two principles: (1) subjects should include critical and crucial cases; (2) subjects should include typical and representative cases. Based on the two principles, we firstly chose three public agencies as research cases. The three public agencies are the Land Department of Taipei County (Case I), the Health Department of Taipei County (Case II), and the Social Affairs Bureau of Kaohsiung City (Case III). They received National Public Service Awards of Taiwan in 2002. We then invited the executive leaders of TQM projects as research subjects for interviews. Table I presents the details of three public agencies. Their efforts in enhancing customer-oriented service activities are briefly described in the following.Table I Research subjectsCasePublic agency Interviewee Customer-oriented service activities No.I Land Department of Taipei County Director Service process reengineeringII Health Department of Taipei County Director Comprehensive citizen’s needs surveyIII Social Affairs Bureau of Kaohsiung City Chief of staff Innovative public servicesCase1: In order to serve citizens in the most convenient way, the executives in case I took a great deal of effort in reengineering the procedures in regard to the various license application. They integrated the traditional bureaucratic operational approach to offer one-stop service, which is the typical customer-oriented service. Further, they built the service network to promote administrative efficiency by using information and communication technologies (ICTs).Case2: In order to understand citizen needs rapidly and precisely, the executives in case II are active in collecting media information, surveying customer satisfaction, and they periodically convene a news conference to ensure that citizen needs are communicated effectively. They not only have a routine problem solving mechanism to serve citizen needs, but also a follow-up and auditing system to review service quality. Their distinguished performance resulted in successfully overcoming Severe Acute Respiratory Syndrome (SARS), the fatal contagious disease that invaded Taiwan in 2003.Case3: In order to deliver high quality social welfare services, all staff in case III was involved in a total quality management project to promote continuous improvement of the various social welfare programs. In particular, they proposed many innovative services, such as for poverty, the aged, and the handicapped. ICTs and volunteers play important roles in delivering these innovative services.4.2 Interview outline design and interview procedureIn order to examine the critical activities that result in the three public agencies being successful in service, we first developed an interview outline. The outline is designed asquasi-structured and open-ended. We then asked for volunteers for pilot testing before the formal interviews were conducted. The final version of interview outline is shown in Table II.Table II Interview outline1.Would you feel free to talk about the process and experiences when you promote service quality?2.How did you convince your employee to accept customer-oriented service concepts and for it tobecome a culture in your organization?3.What did you think the key factors for facilitating service quality?4.Were there any difficulties in carrying out the service quality improvement project?5.How do you think about internal and external customers in your organization?6.How did you determine the needs of internal and external customers in your organization?7.Have you ever learned about any innovative service from other private or public sector agencies?If yes, what is your experience?8.How did you develop and implement an innovative service?9.Is there any cross-functional teamwork in your organization?10.Is there employee education and training in your organization?11.How are complaints from either internal or external customers dealt with in your organization?12.Are there communication channels for internal and external customers in your organization?Before the interview was conducted, we made an appointment by phone and then faxed the interview outline to the interviewee. The interviews began with a general introduction to make the interviewees aware of the purposes of the study and the interview agenda. To increase reliability and validity, we used some principles proposed by Goetz and Lecompte (1984): (1) we chose research subjects in accordance with research objective; (2) two interviewers participated in the interview data analysis; (3) we encoded and checked the interview data by multiple sources, such as the interview tape, document and observation; (4) the research objective was well understood by the interviewee; (5) the interviewer kept a neutral stance during the interview; (6) data were analyzed according to the facts only.Each interview took about 2–3 hours. The interviews were taped, and then the interview content, observational records and documents were encoded into manuscript files.4.3 Data analysis schemeUpon finishing interview manuscripts, content analysis is then conducted. Many approaches have been used in unitizing procedure of content analysis, such as word, sentence, theme, paragraph, and whole text (Weber, 1990), and even character, space and time (Kassarjian, 1977). Among them, theme is an appropriate approach to analyze the opinion of a proposition. In particular, it is very useful in discussions on event, value, belief and attitude (Kassarjian, 1977). We chose it in the content analysis of interviews. Here, a theme represents a complete activity in relation to customer- oriented service.Two phases of content analysis were employed. In the first phase, the whole interview manuscripts were decomposed into units. The unit is called theme. The themes were then placed into the appropriate cell of the five-stage service system design and management dimension (see the horizontal dimension of Table III). This procedure tried to deploy the customer-oriented service activities from the three cases into the five-stage service system design and management.The first phase of content analysis In the second phase of content analysis, we tried to place all themes into the appropriate cell in accordance with the three-layer of organizational culture (see the vertical dimension of Table III). This procedure is to place the customer-oriented service activities from the results of the first phase analysis into the three-layer organizational culture dimension. The COSES model was finally proposed from the results of the two phases of content analysis.4.4 Reliability analysisFor measuring the reliability of the two phases of content analysis, except the researcher, we invited two additional coders to engage in this analysis. In the first phase of content analysis, the two coders were asked to place the themes into one of the five stages service system design and management. Their results are then compared with the researcher. The degree of mutual agreement with the researcher 1 and the reliability 2 are computed to examine whether both indices are beyond 0.70.In the second phase of content analysis, the two coders are asked to perform the same task as researcher. The degree of mutual agreement with the researcher and the reliability are also computed to examine whether both indices are beyond 0.70.5. ANALYSIS OF COSES MODELIn this section, analysis of COSES model is performed according to the data analysis scheme described above.5.1 The first phase of content analysisIn the first phase of content analysis, the three interview manuscripts were decomposed into analyzing units, which are themes. Table IV presents three examples of the unitizing procedure. A total of 19 themes were found from the three interview manuscripts (see Table V). We then placed these themes into the corresponding stage of service system design and management dimension. In other words, these themes were categorized into one of customer identification, customer needs survey, service system design, service delivery, and service recovery stages. The frequency of the 19 themes was indicated in the parenthesis of each cell of Table VI.1 BParty by agreed number A Party by agreed number parties by two agreed completely items of number 2agreement mutual of Degree +×=2 ()[]agreement mutual average of Degree 1-21agreement mutual average of Degree 2y Reliabilit ×+×=Table IV Examples of the unitizing procedureNo. Unitanalysis Themes Corresponding StageCustomer needs recognition Customer needs survey1 First, we have to understand the citizen’s needs ineach group, and the employees’ needs. We theninvestigate, analyze, plan, and execute. Executionincludes a pilot run, to spread around completely,back to review, and then to reform (Case I).CustomerclassificationCustomeridentification2 We search and collect the media information and civilsuggestions actively, and integrate them into ourstrategic planning of various innovative serviceprograms (Case II).Consideration ofenvironmentalchange instrategicplanningCustomer needssurvey3Besides the public agency, employee visits to otherexcellent businesses are encouraged. These visits arefollowed by a conference to discuss learning fromthose excellent business units aboutcustomer-oriented service (Case III).BenchmarklearningCustomeridentificationAs listed in Table V, 19 themes described the customer-oriented service activities werefound in the three public agencies. Despite job rotation was found only once in case I, we thought it is one of the most important activities in the human resource management of the public sector. Research indicates that organizations benefit from job rotation (Robbins, 1992). The numbers of identified themes in each stage are 3, 3, 5, 5, 3, respectively (see Table VI). They are illustrated in the following.First, three themes were deployed to the customer identification stage: (1) customer classification, which indicates the action of classifying customers into different categories; (2) benchmark learning, which means to learn from other excellent businesses or public agencies; and (3) customer definition, which means knowing how to distinguish each cluster.Second, three themes were deployed to the customer needs survey stage: (1) consideration of environmental change in strategic planning; (2) survey customer needs periodically, which means conduct customer’s needs surveys frequently; and (3) customer needs recognition, which means recognizing that different clusters of customers have different needs.Third, five themes were deployed to the service system design stage: (1) set service standard procedures to satisfy customer’s needs; (2) incentive system; (3) employee education;(4) service quality audit system (ISO system); and (5) design of service items in accordance with customer needs.Fourth, five themes were deployed to the service delivery stage: (1) teamwork and empowerment, which indicates sharing of responsibility, information and decision making among group members; (2) cross-functional cooperation; (3) job rotation; (4) willingness to help customers deliver their requests; and (5) the uses of ICTs.Finally, three themes were deployed to the service recovery stage: (1) building customers’ complaints procedures; (2) providing multiple channels for good communication, which means the communication channels are always accessible; and (3) customer’s benefit first, which means putting the customer’s benefit first.。
外文文献翻译(图片版)

本科毕业论文外文参考文献译文及原文学院经济与贸易学院专业经济学(贸易方向)年级班别2007级 1 班学号3207004154学生姓名欧阳倩指导教师童雪晖2010 年 6 月 3 日目录1 外文文献译文(一)中国银行业的改革和盈利能力(第1、2、4部分) (1)2 外文文献原文(一)CHINA’S BANKING REFORM AND PROFITABILITY(Part 1、2、4) (9)1概述世界银行(1997年)曾声称,中国的金融业是其经济的软肋。
当一国的经济增长的可持续性岌岌可危的时候,金融业的改革一直被认为是提高资金使用效率和消费型经济增长重新走向平衡的必要(Lardy,1998年,Prasad,2007年)。
事实上,不久前,中国的国有银行被视为“技术上破产”,它们的生存需要依靠充裕的国家流动资金。
但是,在银行改革开展以来,最近,强劲的盈利能力已恢复到国有商业银行的水平。
但自从中国的国有银行在不久之前已经走上了改革的道路,它可能过早宣布银行业的改革尚未取得完全的胜利。
此外,其坚实的财务表现虽然强劲,但不可持续增长。
随着经济增长在2008年全球经济衰退得带动下已经开始软化,银行预计将在一个比以前更加困难的经济形势下探索。
本文的目的不是要评价银行业改革对银行业绩的影响,这在一个完整的信贷周期后更好解决。
相反,我们的目标是通过审查改革的进展和银行改革战略,并分析其近期改革后的强劲的财务表现,但是这不能完全从迄今所进行的改革努力分离。
本文有三个部分。
在第二节中,我们回顾了中国的大型国有银行改革的战略,以及其执行情况,这是中国银行业改革的主要目标。
第三节中分析了2007年的财务表现集中在那些在市场上拥有浮动股份的四大国有商业银行:中国工商银行(工商银行),中国建设银行(建行),对中国银行(中银)和交通银行(交通银行)。
引人注目的是中国农业银行,它仍然处于重组上市过程中得适当时候的后期。
第四节总结一个对银行绩效评估。
机械手臂应用领域的外文文献以及翻译

机械手臂应用领域的外文文献以及翻译1. Introduction机械手臂是一种用于执行各种任务的自动化设备,其应用领域广泛。
本文档提供了一些关于机械手臂应用领域的外文文献,并附有简要的翻译。
2. 文献1: "Advancements in Robotic Arm Control Systems"- Author: John Smith- Published: 2020这篇文献详细介绍了机械手臂控制系统的最新进展。
作者讨论了各种控制算法、传感器和执行器的应用,以提高机械手臂的性能和精确度。
3. 文献2: "Applications of Robotic Arms in Manufacturing Industry"- Author: Emily Chen- Published: 2018作者在这篇文献中研究了机械手臂在制造业中的应用。
她列举了多个实例,包括机械手臂在装配、焊接和搬运等任务中的应用,以及通过使用机械手臂能够提高生产效率和质量的案例。
4. 文献3: "Robot-Assisted Surgery: The Future of Medical Industry"- Author: David Johnson- Published: 2019这篇文献探讨了机械手臂在医疗行业中的应用,特别是机器人辅助外科手术。
作者解释了机械手臂在手术过程中的优势,包括更小的切口、更高的精确度和减少术后恢复时间等方面。
5. 文献4: "Exploring the Potential of Robotic Arms in Agriculture"- Author: Maria Rodriguez- Published: 2021这篇文献研究了机械手臂在农业领域的潜力。
作者探讨了机械手臂在种植、收割和除草等农业任务中的应用,以及如何通过机械化技术改善农业生产的效率和可持续性。
汽车外文文献1

400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (724) 776-4841 Fax: (724) 776-5760 Web: 2006-01-0218A Hybrid Powertrain Provided with anEmulated Fuel Cell System and a Battery Pack: Experimental ResultsMarco Santoro, Manlio Pasquali and Gianfranco PagniENEA Research Center “Casaccia”Luca SoleroUniversity of Rome “ROMA TRE”Reprinted From: Applications of Fuel Cells in Vehicles 2006(SP-2006)2006 SAE World CongressDetroit, MichiganApril 3-6, 2006The Engineering Meetings Board has approved this paper for publication. It has successfully completed SAE's peer review process under the supervision of the session organizer. This process requires a minimum of three (3) reviews by industry experts.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE.For permission and licensing requests contact:SAE Permissions400 Commonwealth DriveWarrendale, PA 15096-0001-USAEmail:permissions@Tel:724-772-4028Fax:724-776-3036For multiple print copies contact:SAE Customer ServiceT el:877-606-7323 (inside USA and Canada)T el:724-776-4970 (outside USA)Fax:724-776-0790Email:CustomerService@ISSN 0148-7191Copyright © 2006 SAE InternationalPositions and opinions advanced in this paper are those of the author(s) and not necessarily those of SAE. The author is solely responsible for the content of the paper. A process is available by which discussions will be printed with the paper if it is published in SAE Transactions.Persons wishing to submit papers to be considered for presentation or publication by SAE should send the manuscript or a 300 word abstract to Secretary, Engineering Meetings Board, SAE.Printed in USAABSTRACTThe increasing concern about polluting emissions of vehicles, the cost and the limited availability of petroleum are urging many researchers in the world to develop innovative and more energy-efficient traction powertrains. In order to improve the energy conversion efficiencies into the vehicle, auto manufacturers are looking at new energy-storage-system technologies and fuel converters with great interest. The University of Rome“ROMA TRE” and ENEA (the Italian National Agency for New Technologies, Energy and the Environment) have jointly developed and tested a Fuel Cell Emulator, able to feed a vehicle powertrain just like an actual fuel cell should do. Aim of this work was to substitute the fuel cell with a much more reliable device and test different powertrain layouts and control strategies. This approach allows comparing different powertrains by simply resizing their components. INTRODUCTIONComprehensive studies (e.g. [1]) have compared several powertrain layouts and technologies to a reference conventional vehicle - provided with gasoline engine and automatic transmission - over many driving schedules. The cycles with low power demand (low speed or stop-and-go operations) appear to be the most suitable for hybrid operations. These results are logical considering the sources of savings for hybrid vehicles: regenerative braking, no engine idling, and better powertrain efficiency at low power demands.When considering the introduction of advanced vehicles, a complete well-to-wheel evaluation must be performed to determine the potential impact of a technology on carbon dioxide and Green House Gases (GHGs) emissions. A well-to-wheels (WTW) analysis of a vehicle/fuel system covers all stages of the fuel cycle, from energy feedstock recovery (well) to energy delivery at the vehicle’s wheels. A WTW analysis is also referred to as a fuel-cycle analysis. Considering fuel economies for the different vehicle’s configurations on the U.S. Combined cycle (including FUDS and FHDS) it is clear that substantial gains can be achieved through dieselisation or hybridisation. The results considering well-to-pump (WTP), pump-to-wheels (PTW) and WTW powertrain efficiencies for the combined cycle imply that: • Dieselisation can increase the efficiency by more than 20%,• Hybridisation alone leads to an improvement of more than 30%,• Dieselisation and hybridisation lead to an improvement of more than 50%,• A gain of more than 150% can be obtained with the hybrid fuel cell. The hybrid fuel cell configuration combines high fuel-cell-system efficiency and regenerative braking to achieve the highest fuel economy.Considering the energy loss during the NEDC (New European Driving Cycle) cycle for each component for the configurations considered, the same analysis shows that the engine is, by far, the least efficient of the components (accounts for more than 75% of the total losses for the reference case). Fuel cell vehicles lose only half the energy of the best parallel case. Moreover, a hybrid fuel cell powertrain consumes less energy than a system containing only a fuel cell. The weight advantage of the fuel cell system is not sufficient to compensate for the loss in regenerative energy. Fuel cell vehicles supported by an energy storage system achieve the highest fuel economy. This is why regenerative braking energy may be stored and the fuel cell can often operate in high-efficiency regions.Other studies [2] pointed out that on a fixed time budget, vehicle miles travelled by vehicle vary inversely with the average driving speed. In other words, personal vehicles based in congested urban areas may accumulate fewer miles of driving per year than suburban-based vehicles. Thus, owners of hybrid vehicles living in congested areas may drive less than hybrid owners living in suburban area, nullifying the large fuel economy2006-01-0218A Hybrid Powertrain Provided with an Emulated Fuel CellSystem and a Battery Pack: Experimental ResultsMarco Santoro, Manlio Pasquali and Gianfranco PagniENEA Research Center “Casaccia”Luca SoleroUniversity of Rome “ROMA TRE”Copyright © 2006 SAE Internationaladvantage they hold over comparable conventional vehicles. Nonetheless, we believe that the extensive use of hybrid vehicles should dramatically improve the air quality in urban areas. This is thanks to the degrees of freedom these powertrains are provided with which allow to design low tailpipe-emission vehicles especially conceived for urban traffic.Because of their high efficiency and low emissions,fuel cell vehicles are undergoing extensive research and development. A clean vehicle, such as a fuel cell vehicle, does not mean that there are no emissions from a well-to-wheel perspective. When producing hydrogen from reforming at a station, fuel cell vehicles have a lower advantage in terms of efficiency and emissions. Emerging methods for generating hydrogen by exploiting renewable energy sources (e.g. [3]) will soon allow considering fuel-cell-propelled vehicles as actual Zero Emission Vehicles (ZEVs).AIM OF THE WORKAim of our work was the realization of a fuel cell emulator able to generate the voltage/current relationship the fuel cell would supply,and investigate different control approaches of a hybrid powertrain containing a battery pack. The emulator has to be a much more reliable “fuel converter” than the actual fuel cell. During testing, the emulator has been constrained to operate in steady state conditions, i.e. the fuel cell current rate has been continuously monitored and constrained.A major European automobile manufacturer has provided us with a Simulink model of a 60-kW PEM fuel cell (Fig. 1). The model is mostly empirical,relying on fuel cell component input/output relationships measured in the laboratory and quasi-static, using data collected in steady state tests. Most of these data are contained in look-up tables. By changing the number of elementary cells in the model, we have modified the size of the fuel cell, and we have therefore tested and compared the behavior of different-size fuel cells.We have modified at ENEA labs in Rome a battery cycler, i.e. an AC/DC converter that is able to charge and discharge a battery pack according to a chosen voltage/current law. Such modified battery charger can be driven from external signals, calculated by the modeldescribed above.Fig. 1: 60kW PEM fuel cellTHE POWERTRAINWe have shown in previous papers [4, 5] the availability and effectiveness of our Multi Input Power Electronic Converter (MIPEC). This device manages the bidirectional power flow from three different sources for feeding a traction drive (Fig. 2).Fig.2: MIPEC manages the power flowing from a BatteryStorage Unit (BSU), an UltraCapacitor tank (UC) and the Fuel Cell (FC) to the Traction Drive The powertrain does not contain any ultracapacitor and therefore just two inputs of MIPEC can work in this test.The fuel cell system has been emulated thanks to the battery cycler (3-phase AC/DC converter) and a suitable DC link capacitive filter. An x86 real time microprocessor platform (PC 104) regulates the output voltage of the FC emulator as function of the output DC current and the operating temperature.The microprocessor controls the emulator on the basis of the fuel cell model: at a given current generated by the emulator, the instantaneous output voltage can differ on dependence - this is evident at low-load currents - on the operating conditions (Fig. 3).Fuel Cell Voltage vs. Current102030405060708090100110120130140150Current [A]Fig.3:Minimum, mean and maximum fuel cell Voltagevs. mean supplied Current The powertrain is completed by a VRL A battery pack and a traction drive (induction motor with peak power of 30kW and continuous power of 15kW), coupled to afour-quadrant-operation dynamometer (Fig. 4).Fig. 4: 15kW continuous-, 30kW peak-power tractiondrive, mechanically coupled to dynamometerHOW THE TEST BENCH OPERATESFig. 5: Layout of the powertrain under testingReferring to Fig. 5, PC104 microprocessor and boards, with a time step of 0.1s xCalculate hydrogen consumption, fuel cell temperature and voltage in dependence on the current requestedx Drive the cycler by imposing the voltage the fuel cell would supplyx Calculate the batteries state of charge and their maximum allowable currentxCalculate and send to the MIPEC DSP the maximum current and the maximum current rate the fuel cell could meetx Acquire fuel-cell emulator current and voltage xAcquire batteries current and voltageThe MIPEC DSP xReceives information from the PC104 microprocessor concerning maximum fuel cell current, maximum battery current, maximum rate of the fuel cell currentxDrives MIPEC switching devices (i.e. calculates their duty cycles length) and thus determines the current flows from batteries and fuel cell.Torque and speed from the drive are acquired with a time step of 1s during testing.Main aim of the powertrain control strategy -this algorithm is implemented in the PC104 boards -is to limit the fuel cell power rate. This result can be gained by introducing an energy storage system which allows supporting the rapid change of power flows over the driving schedule. Moreover, the VRL A battery pack allows recovering energy during vehicle braking and coastdown.The adoption of a hybrid configuration allows decreasing the cost of the powertrain: a fuel cell of lower size - supported by an energy storage system - can feed a vehicle with the same performance that should be met by a vehicle provided with a full-size one.Varying the quantity of elementary cells in the model we have rescaled the fuel cell size and tested the behavior of powertrains propelled by a 7-, 15-, and 22-kW fuel cell,with the same battery pack at three different initial SOC values.Fig.6shows how the powertrain power flows are qualitatively managed. When the vehicle accelerates, the fuel cell meets the power request (Pload ) like a“sluggish” genset. Most of the power is supplied by the battery pack in this phase.At the end of the acceleration phase, the fuel cell can recharge the battery pack (Pbatt is negative). During braking or coastdown the kinetic energy is stored in the battery pack and the fuel cell is turned off.P load P batt P fcPtFig. 6: Power flow controlThe fuel cell model contains the maximum allowable fuel cell current and current rate (Figs. 7and 8,respectively)vs. the fuel cell stack temperature.10203040506070102030405060708090100110120temperature [°C]max current [A]Fig. 7: Maximum fuel cell current vs. temperature 01020304050607010152025303540temperature [°C]max di/dt [A/s]Fig. 8: Maximum fuel cell current rate vs. temperatureThis information is sent from the PC104 boards to the MIPEC DSP, and MIPEC monitors the FC current and the battery voltage. MIPEC splits the power request between fuel cell and batteries and is able to accurately constrain both the fuel cell current and its rate.The recharge current supplied by the fuel cell is constrained in dependence on the batteries state of charge (Fig. 9).Fig. 9: Maximum recharge current vs. SOCTESTING THE POWERTRAINThe powertrain has been tested over the urban section of the NEDC (Fig. 10), consecutively repeated 20 times.By this way, we were able to observe the system evolution at varying temperature,batteries state ofcharge, etc. etc.Battery socFig. 10: Urban segment (ECE 15) of the New EuropeanDriving Cycle Figs.11and 12 show the power flows in the vehicle over one NEDC urban section at cold and warm fuel cell,respectively. It is evident the fuel-cell power dependence on the operating temperature: the cold fuel cell is able to supply a maximum power of 8 kW (Fig. 11). The warm fuel cell can deliver a maximum power of nearly 12 kW (Fig.12).The batteries supply in both cases the power necessary to meet the driving cycle.The increase of hydrogen consumption is due to the fuel cell temperature increase. Points A and A 1,B and B 1,C and C 1, respectively show the hydrogen consumption in the same instant of two consecutive driving cycles (Fig. 13). A hydrogen vent (0.3g/s for 2s in the 7-kW fuel cell and 0.5g/s for 2s in the 22-kW fuel cell), depending on the past hydrogen consumption, is needed for expelling water from the distribution channels.101214time [s]Fig. 11: Power flows over the first NEDC urban section.The fuel cell is cold30403060308031003120314031603180-22468101214power [kW]P loadP battP fcMax pfc(T)time [s]Fig. 12: Power flowing over one NEDC urban section.The fuel cell is warmtime [s]Fig. 13: Instantaneous hydrogen consumption over twoconsecutive NEDC urban sectionsThe final SOC of batteries is nearly the initial one (Fig. 14).The total hydrogen consumption (Fig. 15) is therefore the actual energy consumption over the testing schedule. The SOC is calculated according to an algorithm that has been developed in collaboration with the University of Pisa (Italy). It takes into account the variation of batteries capacitance in dependence on the battery current and temperature.Fig. 14: SOC variation during testingtime [s]Fig. 15: Hydrogen consumptionPotenza [kW]P e r c e n t u a l e s u i C a m p i o n i T o t a l i A c q u i s i t i [%]Fig. 16: Fuel cell operating points distribution (7 kW,SOC = 0.6)Potenza [kW]P e r c e n t u a l e s u i C a m p i o n i T o t a l i A c q u i s i t i [%]Fig.17: Fuel cell operating points distribution (22 kW,SOC = 0.6) Figs.16 and 17 depict the distributions of the acquired fuel-cell emulator operating points and are referred to a fuel cell power of 7 kW and 22 kW, respectively. SOC is 0.6in both cases. The smaller fuel cell has to recharge more often the batteries, as they provide most of the acceleration power and are discharged. The fuel cell thus operates mostly in its high efficiency region,and although generates meanly more power than the 22-kW fuel cell, its hydrogen consumption is lower.The hydrogen consumption is 179g for the 7-kW fuel cell and 206g for the 22-kW one.CONCLUSIONThe development of a fuel cell emulator allows testing in a reliable and affordable way various powertrain configurations. By this way we are able to optimize experimentally the control strategies. The knowledge of the optimal control strategy allows realizing a vehicle provided with an actual fuel cell. In order to gain such results, a reliable emulator - whose performance has been compared with the reference fuel cell - is necessary.Moreover,this approach allows emulating any genset.The powertrain testing over the ECE 15 cycle allows to recognize the source of savings that the powertrain hybridization has generated,when the vehicle meets an urban schedule. The 22-kW powertrain is able to supply all the power the vehicle needs, and the batteries operate only until the fuel cell is cold. As soon as the fuel cell has reached its operating temperature, it is able to provide the needed power and to meet the dynamic behaviour the cycle requires.Fig. 17 shows that the 22-kW fuel cell mainly operates in the 0.5-1.5kW range. This power is nearly the power of the fuel cell accessory loads, and the fuel cell thus operates in low-efficiency regions. The 7-kW fuel cell cannot always meet the whole traction power and the batteries have to compensate this gap of power. The batteries must be recharged periodically by the fuel cell,e.g. when the vehicle is idling. This is why the 7-kW fuel cell mostly operates in high efficiency regions (Fig. 16).57.558.559.5These conclusions refer to the driving cycle here considered. If we suppose to analyze high-speed schedules (e.g. highway driving cycles), we will obtain completely different results. The optimal drivetrain sizing depends heavily from the driving cycle under testing. In each case, the current fuel-cell stack prices suggest to seriously consider hybrid drivetrains.REFERENCES1. A. Rousseau, P. Sharer “Comp aring Ap p les toAp p les: Well-to-Wheel Analysis of Current ICE and Fuel Cell Vehicle Technologies”, Proceedings SAE 2004 World Congress, March 8-11, 2004. Detroit, MI, U.S.A.2. D. Santini, et al. “Hybrid Electric Vehicle TechnologyAssessment: Methodology, Analytical Issue and Interim Results”, ANL Report ESD/02-1 (2001)3.http://www.enea.it/com/ingl/solar/index.html4. Santoro M., Puccetti A., Pasquali M., Solero L.,L idozzi A. “A Novel Multi-Inp ut Power Electronic Converter for Automotive A p p lications”, 11thInternational Power Electronics and Motion Control Conference EPE – PEMC, September 2-4, 2004, Riga, Latvia5. Di Napoli A., Crescimbini F., Solero L., L idozzi A.,Pede G., Santoro M., Pasquali M. “Multi Input Power Electronic Converter for Automotive Ap p lications”,AutoTechnology, Volume 4, December 2004, ISSN 1616-8216CONTACTMarco Santoro Ph.D., Electronic Engineer, currently joins the Department of Robotics at ENEA Research Center“Casaccia”, Rome, Italy. He can be reached at marco.santoro@casaccia.enea.it.DEFINITIONS, ACRONYMS, ABBREVIATIONS DSP:Digital Signal ProcessorENEA: Ente per le Nuove tecnologie, l’Energia e l’Ambiente (Italian National Agency for NewTechnologies, Energy and the Environment) FHDS: Federal Highway Driving ScheduleFUDS: Federal Urban Driving ScheduleGHG: Green House GasMIPEC: Multi Input Power Electronic ConverterNEDC: New European Driving CyclePEM: Proton Exchange MembranePTW: Pump To WheelsSOC: State Of ChargeVRLA: Valve Regulated Lead Acid (battery)WTP: Well To PumpWTW: Well To WheelsZEV: Zero Emission Vehicle。
快递物流网络优化研究外文文献翻译1

文献出处 : Humble M . The study of ex press log i stics netw ork opt imizat ion [ J ] . Operations R esearch Perspect ives, 2016, 6 (3):106 -115 .原文The st udy of ex press log ist ics netw ork optim izationHumble MA bst ractEx press indust ry as an important part of m odern log ist ics indust ry to become one of the fast est g row ing indust ries in recent y ears. The rapid development of ex press indust ry lead to a lot of capit al inflow ex press delivery m arket, thus express companies, t here are many sizes for g rab market resources,the com petit ion bet w een ent erprises is becoming more and fiercer.Ex cessive com petit ion caused a lot of w ast e of resources, reduce the ut ilizat ion of resources, and increase the cost of log i stics.In order to solve t hese problems need to int eg ra te the expres s industry resources, increase the concent rat ion of indust ry level.A nd C ourier companies merg ers and reorg anization is the int eg ration betw een the express industry resources,ex press delivery indust ry compet it iveness effect ive w a y. Express log i stics net w ork in t he ex press indust ry i s reg arded as ex press the l ifeblood of ent erprises, of w hich the end of the service net w ork (hereinaft er referred to as end nodes), the dist ribution cent er,the urban reg ional hub ( hereinaft er referred to as the reg ional hub) and the num ber of spatial lay out direct ly det ermines the operation m ode of delivery a nd quality of operat ions. Therefore, under the merg er rest ruct uring ent erprises express log i stics net w ork optim ization int eg ration to ex press the development of the ent erprise aft er the m erg er and reorg anizat ion play s a decisive role.Key w ords:M erg ers and reorg a nization;Netw ork opt imizat ion int eg ra t ion; End node;Dist ribution center1 Int roductionLog is t ics net w ork t heory is the inevit able out come of the development of log ist ics manag ement research Gum constantly, is a st andardized, sy st emat ic and scientific research important w a y of m odern log ist ics, i t ex panded the log i stics netw ork operations research new tra in of t houg ht, provides a t heoretical basis for the log i st ics netw ork opt im izat ion. DJ B ow ers ( 2007 ) put forw ard the theory of supply chain log istics int eg ra tion,and based on log istics, w a rehouse locat ion,t ransport ation cost, invent ory cost, e t c , int eg ra t ing advanced the t heory of int eg rationa rchitect ure. M S R am m . ( 2009 ) int eg ra ted log i stics net w ork i s a c losed loop int eg rated forw ard/re verse log i stics net w ork,including production/re covery,m ix ed distribution,custom e rs, collect ing and processing cent er, etc., first used to det ermine the m ix ed integ er linear prog ram m ing model for log i stics netw ork int eg ration, and t hen in uncertain scenarios using the mix ed integ er l inear prog ram ming model, the model can avoid suboptimal result s caused by separat ion and continuous. M a ria B oiler mud ( 2013 ) in a nonlinear integ er model to solve the dy namic integ ra ted forw ard and reverse dist ribution netw ork desig n model double H st andards to minim ize t ransport cost s a nd tim e; Int eg ra t ed log i st ics netw ork facilit y locat ion problem to improve the efficiency of forw ard and reverse log istics,mainly i s the det erm ination of three ty pes of facilit ies, w arehouse ( log i stics), collection cent ers ( reverse log i stics) and mix ed facilities ( forw ard and reverse log ist ics).2Ex press log ist ics net w ork1 S ummary of log i st ics netw orkDonald j . B ow er and David i ts loss in the book of the process of log i st ics m anag ement, supply chain int eg rat ion point s out t hat the w hole log i stics netw ork desig n has a direct impact on the log i st ics efficiency, to provide cust omer service capabilit ies and cost mainly by num ber of log i stics facilities,the influence of the pract ical fact ors such as scale;Essential part of netw ork la y out desig n i s to det erm ine the num ber of every k ind of facilit ies,locat ion and job,et c.; In the constantly chang ing compet it ive environment,the ty pes of product s,cust omer dema nd chang es a t the mom ent,so perfecting the infrast ructure net w ork to adapt to the chang e of supply and demand i s very import ant.R onald h. B a l loon ( 2010 ) arg ues that the essence of the net w ork st ruct ure problem i s to det ermine from to the cust omer's net w ork st ructure,including the facilit y ty pe, num ber, locat ion and each facilit y betw een the determ inat ion of amount of product s and cust om ers; In his book "log istics manag ement", l ist s the data needed for log i stics netw ork int eg rat ion, and put forw ard the evaluation and the evaluat ion of ent erprise log istics net w ork in the g eneral audit criteria. L og i st ics net w ork has the follow ing charact eristics: log i stics net w ork has the charact eristics of hig h efficiency. The g oal of log i stics netw ork is the low est cost for a shorter t ime w ould be delivered g oods in g ood condition of t he demand s ide, the max imum com bination of log i stics and inform a tion flow,cash flow to achieve "zero invent ory, a short period of t ime,no interm i tt ent t ransmission" i s the ideal state.The openness of the log i s t ics i s net w ork. Openness i sthe foundat ion of log i stics nodes can be t hroug h the public netw ork, a ll nodes connect ed directly or indirectly. L og i stics netw ork openness enables each node and ot her nodes ex chang e information quickly,processing business. Pilot log i s t ics netw ork inform a t ion.W idespread use of mechanizat ion and aut omat ion equipment can g reatly improve the level of inform a tion of log i stics netw ork, but the collection,manag ement,analy sis and m ining equipm e nt in the process of log i stics informat ion i s more import ant.The informat ion in the log istics net w ork t hroug hout the log istics activit y a lw a y s , to the operat ion of log ist ics netw ork as a w hole have the funct ion of the g uidance and int eg ra tion.Log ist ics net w ork has the s ize advant ag e . S cale i s the important a ims of log i st ics net w ork. Dispersion formed in the fie ld of log i stics, log i stics netw ork nodes and the charact eristic of manag ement, w i l l hig hlig ht i ts scale advant ag e . Throug h la rg e-scale joint operation of log istics nodes can fully improve the effic iency of the w hole operat ion of the log i st ics net w ork, reduce the cost of the overall operation,reliance on a sing le node of log i stics netw ork is a l so s ig nificant ly reduced; C an't w ork normally even if t here i s a node, ot her nodes can quickly m ak e up for i t, resist risk abilit y.2 The charact erist ics of the ex press log ist ics netw orkEx press log i st ics netw ork m a inly includes t hree part s, main t ransport netw orks,and distribution net w orks, from end off. Every part of the netw ork composit ion and the exercise of the funct ions of each are not identical. B ackbone t ransport net w ork i s ma inly betw een reg ional hub and reg ional hub and dist ribut ion center of the net w ork, i t i s ma inly long dist ance transportation, mainly by car and a i r t ransport w a y. Distribut ion net w ork is mainly bet w een dist ribut ion center and end node netw ork, g oods dist ribut ion t hroug h the distribution cent ers, arrived a t the end of the subordinat e branches. From end off net w ork composed of cust omers and end node, i t i s the first l ink i s the final l ink of express delivery business, is a lso an im port ant part of the cust omer experience.The different met hods of delivery of g oods produced tw o ty pes of net w orks: shaft ty pe and the ent ire company g eneral form ula ex press log i stics netw ork. A m ong t hem, the major st ructure of the radiation i s the hub of part ition netw ork charact erist ics, in each partit ion can have one or more of the hub, the hub node can not only send and receive the g oods w i t hin the reg ion but a l so can connect ot her areas of the hub node, t ransit and sorting is a l so i ts funct ion. In the ax i s of t he ty pe express log i stics netw ork, transport of g oods need to transport to the hub node, t hroug h sortingt ransit hub node before handing out again. Fully connect ed netw ork i s any node is ex chang ed bet w een, should have the shipping l ine directly connect ed. The connect ed net w ork can realize g oods direct ty pe dist ribution bet w een any nodes on the net w ork,but t his w a y of dist ribut ion w i l l be an additional shipping cost. B ecause of the dispersed dist ribution and sm a l l feat ures express C ourier companies i s the main dist ribution object,so ax ia l radial express m ore t han log ist ics net w ork a l l over a long w i th the netw ork helps to improve log ist ics resources int eg ra t ion, log istics resource ut ilizat ion,to reduce log i st ics cost,shaft f ty pe ex press log i stics netw ork more in l ine w i th the act ual sit uation of delivery operat ion.3The com p osition of ex press log i s t ics netw ork3 .1 Delivery terminal net w orkDelivery a t the end of the node is the beg inning of the express log i stics netw ork point and end point,its main function i s to Posting and expresses m a i l delivery.End point s a re m a inly distributed in express business covered a rea, i t i s a hub betw een cust omers and express log istics net w ork, i t i s the m ost closely relat ionship w ith the cust omer.2 Ex press t ransit cent erFedEx t ransit node is mainly to ex press log istics net w ork of ex press dist ribution and transport. In the ex press indust ry g enerally call forw a r ding nodes distribution center.Dist ribution cent er is t hat i t i s import ant to ex press the import ance of sorting and dist ributing node,a l t houg h it i s not eng ag ed in com m o dit y concret e product ion,but i t carried from ot her outlet s to express according to the act ual sit uation of t heir concent rat ion,distribution and t ransport,so as to realize ex press process from scatt ered to cent ralized and decent ralized. La r g e ex p ress t ransit cent er a l s o know n as the reg ional hub, i s mainly responsible for an area of ex press distribution processing w ork. R eg ional hub locat ion and capacit y of the ent ire net w ork t ransit t ime and produce a g reat impact on the t ransport capacit y. Ex press delivery reg ional hub of the dist ribution cent er,unified handling aft er i t s focus to send to other reg i onal hub or sent to the affilia t e dist ribut ion cent ers.FedExt ransit cent er location,quantit y,and the det erminat ion of posit ion,usually to com prehensively consider the g oods cat eg ory, quant it y,flow,traffic condit ions,g eog r aphical location,t imeliness, urban planning and policy, a nd other t ransit cent er connect ing relat ions, operat ion efficiency and ot her fact ors.3 Ex press log i stics operation netw orkEx press operation of the net w ork i s m a inly composed of backbone t ransport netw ork, distribution netw ork and term inal to send t hree part s. A mong t hem , the backbone t ransport net w ork i s m a inly composed of reg ional hub and distribut ion cent er,dist ribut ion netw ork mainly distribution cent er and end node; from end off the net w ork by t he end of branches and cust omer focus point.U sually express log i st ics net w ork, the net w ork backbone netw ork st ruct ure for shaft ty pe netw ork, most ly adopt m ore hub shaft radial net w ork; From dist ribution net w ork and end off net w ork mainly based on the principle of reg ional scope of radiation distance and w i th the m ethod of part ition manag em ent. The ex press log istics net w ork is t he core part of the backbone transport net w ork; it is t he a ssurance of delivery tim eliness.B ackbone net w ork process i s conducted w i thin the ent erprise, the opt imizat ion of the backbone net w ork mainly from the perspect ive of the cost or e xpense. From end off netw ork because of c lose cont act w i th cust omers, i s express ent erprise and cust omer direct int eraction betw een the nodes, not only consider the cost on i ts optim izat ion int eg ra tion problems, should t hink more cust om ers w i th bet ter service ex perience for the m a in purpose, pay a ttention to the m ining of cust omer dem and information, optim ized and int eg rat ed send l ink.Delivery of the ent ire process is as follow s : w hen the c l ient needs to send a , can t hroug h the phone, the w ebsit e of C ourier company or to t he end node, send a request, a fter receiving member w i l l charg e customers express according to the s i t uat ion; R eceipt a t the end of the class member t ake the ex press m a i l delivery to the end node, w i l l ex press, document s and other inform a tion w i th the st aff of the t erm inal branch t ransfer processing , t hus completes a w a rehousing operat ions; Outlet s w arehouse controller according to the local dist ribut ion cent er a t the end of the t ransit fl ig hts w i l l express mail sent to the local dist ribut ion centers, i t i s called the sender homew ork; Express mail a rrived a t the dist ribut ion cent er, sorting , a l l ex press direct ion as conditions aft er sorting to a rrang e transportation a fter a brief st orag e ( depending on the sit uation on the mode of t ransport at ion to choose tra ins, cars, planes, et c.).A ft er the ex press arrival a t the reg ional hub of the c i ty, according to express the dest inat ion address ag a in point s to the dist ribut ion cent er, and t hen, t hroug h the dist ribution net w ork to send the g oods to the t erminal outlet s;译文快递物流网络优化研究Humble M摘要快递业作为现代物流业的重要组成部分成为最近几年发展最快的行业之一。
2024年外文参考文献格式要求

D.专著中析出的文献
〔序号〕 析出责任者.析出题名.见(英文用In):专著责任者.书名.出版地:出版者,出版年:起止页码.
〔12〕罗云.安全科学理论体系的`发展及趋势探讨.见:白春华,何学秋,吴宗之.21世纪安全科学与技术的发展趋势.北京:科学出版社,2000:1-5.
2024年外文参考文献格式要求
外文参考文献格式要求 篇1
单一作者著作的书籍:
姓,名字首字母.(年). 书名(斜体). 出版社所在城市:出版社.
Sheril, R. D. (1956). The terrifying future: Contemplating color television. San Diego: Halstead.
②磁带数据库[DB/MT]
③光盘图书[M/CD]
④磁盘软件[CP/DK]
⑤网上期刊[J/OL]
⑥网上电子公告[EB/OL]
期刊论文
[1]周庆荣,张泽廷,朱美文,等.固体溶质在含夹带剂超临界流体中的.溶解度[J].化工学报,1995,46(3):317 323
[2]Dobbs J M, Wong J M. Modification of supercritical fluid phasebehavior using polor coselvent[J]. Ind Eng Chem Res, 1987,26:56
B.专著
〔序号〕 主要责任者.文献题名〔M〕.出版地:出版者,出版年:页码.
〔3〕 刘国钧,郑如斯.中国书的故事〔M〕.北京:中国青年出版社,1979:115.
审计风险外文文献(1)

审计风险外文文献(1)摘要审计风险是每一个企业都不可避免的存在,如何有效地对企业进行风险管理和风险评估,是企业在竞争激烈的市场经济中持续发展的关键。
本文研究了一些关于审计风险的外文文献,包括审计风险概念、审计风险评估方法、审计风险管理等方面,旨在为企业的管理者提供有益的参考。
正文1. Introduction随着市场经济的不断发展,企业日益面临着各种各样的风险,其中审计风险是一种不可忽视的风险。
审计是公司财务状况公开的重要手段,而审计风险则是指在审计过程中,会发现实际情况与财务报告不符或存在其他问题,这种风险不仅会对企业的财务状况产生影响,也会对企业的声誉产生负面影响。
2. 审计风险概念审计风险分为三个方面:检查风险、控制风险和依赖风险。
检查风险是指审核员未能检查到可疑交易或错误的信息。
控制风险是指公司的内部控制程序存在缺失,导致财务报告的准确性受到影响。
依赖风险是指报告使用者过度依赖于审计师提供的信息。
3. 审计风险评估方法审计风险评估是完整的审计过程的一部分,目的是评估审计风险的程度。
当确定企业的特定事件可能导致审计误差时,重要的是要确定风险的数量级和可能性。
评估审计风险的方法通常有三种:3.1 指标法指标法是根据历史数据,使用统计学方法来确定预测未来事件的可能性。
它通常将风险因素与特定事件发生的概率联系起来,以确定将需要进行更详细的审计程序的区域。
#### 3.2 经验法经验法根据审计人员的经验来确定预测的未来事件可能性。
这种方法不依赖于任何统计数据,而是基于审计人员对企业的认识和经验来进行评估。
#### 3.3 聚集法聚集法涉及对不同因素进行评估,这可以提高风险评估的确定性和准确性。
在这种方法中,审计人员可以对所有可能影响判断的因素进行评估,包括企业规模、行业类型、管理体系等。
4. 审计风险控制为了减少风险,管理人员可以采取以下措施:4.1 审计策略管理人员应该制定一个明确的审计策略来减少审计风险。
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The theme of the embedded QuanXuedynasty and QuanXue cultural ecologyPengHui LiPick to based on the content of the deconstruction of embedded, we can see that the embedded respectively from the study of the importance of learning, learning, and the connotation of the model, the purpose of study, four levels, comprehensive, systematic expression of "QuanXue" theme. Born of the embedded linked to the social and cultural ecology of the song dynasty, we can feel the theme of the establishment of QuanXue embedded in song dynasty was no accident, but the mainstream of society in the promotion QuanXue culture universal social custom enlightenment inevitably performance, but also in the history of China QuanXue cultural inheritance.Keywords QuanXue embedded QuanXue themeSince the advent of the embedded, quickly become widely recognized, the social education in ancient China compulsory course. Enlightenment, Investigate its reason, not only because it is easy to read, and language, and BaiGuXing ", "QianZiWen formed by the mainstream of books, and because of its complementary coupling in the book on the content of ancient China QuanXue mainstream culture, is a leading tendency of morality, intelligence, physical education teaching and the public can. On the function of the value of embedded evaluation, head of the education function, it is read. For the education of ideology of embedded in the teaching content and evaluation of the cognitive and ZhangZhiGong representative. He thought, "embedded" content can be roughly divided into five categories: "teaching" and "learning" the importance of social life, the basic concept, the basic knowledge, elementary and classics, history of the characters JiangShi assiduous study story encourage children to study hard. In this category, "five content in teaching and learning in the importance of the", "historical stories encourage children to learn" has appeared at QuanXue "outline". According to the above content arrangement, although the relative QianZiWen ", "BaiGuXing", its contents have relatively concentrated trend, however, still lacks logical and between content system, strictly speaking topic statement or not. Actually, relative to the QianZiWen ", "BaiGuXing generation of enlightenment, the reader is the most outstanding contribution of embedded, isn't it a vivid cadence of sentence, not a dirty it flexible syntax structure, also not the language form and simple in content, is beyond the literacy, barriers, and opened the" education ", and conform to the point of the song dynasty mainstream society universal promotion QuanXue culture ", "the trend. "QuanXue" theme throughout and scattered throughout the word, keep aloof into one with the theme of content, the continuity, the logic structure and integrity of the QuanXue with systemic, thus giving thought education function, throughout China fundamentally the ascension of the middle ages elementary textbooks. According to the knowledge, people usually covers the embedded education of common sense, the basic ethical, daily MingWu, judgments system, history knowledge, etc. Extensively Labour story content, However, this is just in the embedded themes of visual cognition premise of unconscious. If you use a theme to view Angle, we will deeply felt the embedded in the context of total breakthrough ", "QuanXue clearly defines" theme. Below, we from the Angle of textual structureof the QuanXue theme of embedded system performance. The embedded "aberrational, can be divided into four big throughout level. First floor: introduction to "people don't know righteousness," that 28. Very, emphasized the importance of teaching and learning, the layer teaching and learning respectively in two dialectical perspective. Before 20 words, the importance of the teaching, for total proposition conception. Goodness, from teaching, teaching and the master of this association, etc. After eight sentences, expounds the importance of learning. For the son of man from "second" to the "in", Pennsylvania, elaborate study 262. Divided into learning the filial piety "for the son of man", from "appropriate prophet". If XiJian wide, from "first filial piety brother" to "people". This section, including MingWu concept and ethical concept, in general education with the education. As for the school to learn, "whoever has been" four, To learn the scriptures, "for scholars" to "the GuLiang";" For the study, "ZiShu by both lao-zhuang and" to ";" For the study, "the son tong" to "xi in". The third from "yesterday ZhongNi" to "and" that if it is QuanXue 66, for example, the broad masses students build typical. Including the scholars, "yesterday ZhongNi incubation of" to "; "zhuo bitter Scholars, "Sue to old springs" to "appropriate aspire;" Intelligent alert, versatile, "jade-like stone eight" to "also if". In this section, the kind of vivid, repeatedly calling with "young", as appropriate, "young", to learn, to learn, "young", "when the effect's man, when ZiJing", "er, and encourage young, direct illuminate of exhortation. The fourth floor that learning purposes. This part of the first layer "refresh the importance of teaching and learning", which is the end-result of total, will learn to write the purpose YuYouXue last, jun, famous father, explicit soloist GuangQianY uHou, although the feudal sermon was evident, but cannot eagerly. Finally "meritorious" four again, QuanXue illuminate the decree that total theme to sublimate. For the embedded in QuanXue "" as the core value of the Ming dynasty, such as education value connotations in the LvKun SheXue cage" said: "at SheXue, eight years old, read the following XiJian with embedded smell." Can understand it, LvKun so-called "knowledge", is not limited in general, wikipedia should also include "learning" consciousness. This is the starting point of all education, is the enlightenment of educatees' knowledge of basic content. "Embedded" show "QuanXue" theme, reflect the society of song dynasty QuanXue "of" cultural ecological background. Macro culture. Song dynasty Confucianism, adhering to the "people", "the prince founding of the people ChengSu", attach importance to education of traditional education. At the same time, drawing sui and tang WuJiang ShanQuan LuanZheng sysytem for safety, the regime in military weights, valuing literature while ignoring, imperial examination system, it has to have the style of song generation ChiCheng provides the political guarantee. In the political guarantee, under the premise of song dynasty society gradually formed a good "QuanXue" cultural ecology. Thinkers theoretically established the values, such as study, "if ye shi, the fear of loss of judah." In addition, the custom, section also; if not, the JunJi. Not as inferior to have also." Not only emphasized the importance of learning, and emphasized the regularity study time according to the importance of learning. Song dynasty study educators advocate model. According to the song dynasty, Confucian ZhangZaiChuan ", with "learning ZhuSheng lecturing, will be like the saint is already", and "model based on the concept of learning. The embedded ages 14 "enumerated the typical model, the study, which has three towards this. Established in education in the song dynasty, many teachings.if groundbreaking measures. The management of teachers, choose, management level, and even set, credit, there are many surmount forefathers, fully embodies the achievements of the local community. Meso culture. Song dynasty to the social and public middle civilian tilt. Students must be expanded TangChaoGuo behavior more sons, officials and protectorTaiXue students must be above 5 tasted officials and counties and children. Song for the former seven product more relaxed, TaiXue for eight sons officials over product of children and officials callings. Jun vision The song school type and teaching contents is mostly have bigger expansion, adding a kung fu, painting, which is further enrich the connotation of the concept of talent, expand the scope of state and selection. Considering various economic and cultural education development imbalance, in order to encourage students actively learn underdeveloped regions, the government even made a quota, obtained provinces will execute other edits north-south policies that ensure the economic, cultural education backward area of examinee's interests. These measures in the nationwide, to promote knowledge class reading for the wind played a positive role. Micro culture. The state power, makes reading for the pursuit of beginning to affect life (folk "learn" psychology, especially in the southern region of relatively developed economy, "QuanXue" has become an important aspect of social custom enlightenment. Due to the song dynasty, the author developed to a certain extent, the folk senior private repressed. Because education "folk, having met commonly learn and adapt to the children, teenager nearby, too early," home to high-speed development, this update for elementary textbooks, and also provides the urgent demand for new elementary textbooks put forward higher request. "Embedded", "BaiGuXing" thematic elementary reader in this context. Because of these materials of transcendence, high quality, eventually becoming China's ancient elementary textbooks in most rich vitality of classic. In order to guide the political and cultural trend, this song government has three times to school. In order to QuanXue concept to social and cultural psychology, the number of components and influential QuanXue reader field. Among them, the emperor song zhenzong QuanXue poems of the song, sima guang, wang anshi's QuanXue increasing, and the urge for the imperial examination in the imperial textbooks written for children of three books and extensive social influence. Especially the emperor song zhenzong QuanXue poems, is put forward in the book, frankly, the gold room, QianZhongSu has YanRuY u etc; the proverbs, read for the society of song dynasty undoubtedly influence. Although these QuanXue renowned writer, down to the emperor from the literary world leaders, but as a discipline education, whether in the text, or Settings, such as language, systematic and teaching are insufficient still. So, from the hand of the people of both literacy and education of the embedded rightousness, prodigy produce. Poem" The child prodigy poems is put forward "all things, only read high" slogan, reflecting the song together, common QuanXue echo the good tendency, China folk enlightenment millennium undying creed. In the mainstream culture ChiCheng secular society, economy and culture in relatively backward area, the pursuit of eyes, pay attention to practical utility living skills, rejected the book learning was still very strong. This kind of social and cultural ecology, the negative factors of the folk culture of enlightenment QuanXue forward to penetrate. In this context, the elevation of the embedded QuanXue theme of birth, which complies with the mainstream of society to the promotion of the folk society needs QuanXue meet the expectation. To sum up, we can feel QuanXue carry the theme of birth was not an accident of embedded in song dynasty, it is the mainstream of society QuanXue culture in the universal promotion of social custom enlightenment. Stand in a higher perspective, the history of Chinese history is embedded QuanXue cultural heritage masterpiece.《三字经》的劝学主题与宋代劝学文化生态李鹏辉摘要通过对《三字经》内容的解构,我们可以看到,《三字经》分别从学习的重要性、学习的内涵、学习的典范、学习的目的等四个层面,全面、系统地表达了鲜明的“劝学”主题。