ABSTRACT SAPHIRE “Recover Cut Sets ” Editor A Technique for Automating the Manipulation a
SAPHIRE “Recover Cut Sets” Editor:A Technique for Automating theManipulation and Edition of PRA Cut Sets†Curtis L. Smith and Richard D. FowlerIdaho National Engineering LaboratoryLockheed Martin Idaho TechnologiesIdaho Falls, ID 83415-3850ABSTRACTThe accident sequence cut sets generated for a probabilistic risk analysis generally require some manipulation to account for special modeling concerns. This paper presents a method of efficiently manipulating cut sets, specifically for the modeling concerns of (a) post-accident operator recovery actions, (b) common cause failure modeling, and (c) removal of mutually exclusive events. The method presented consists of logic rules that define a cut set search criteria and changes to be applied to the cut sets meeting the search criteria. While this method of cut set manipulation is demonstrated using the ”Recover Cut Sets” editor in the SAPHIRE risk assessment computer code, it is proposed that this methodology could become a standard method for cut set manipulation.KEYWORDSprobabilistic risk assessment, recovery actions, common cause failures, mutually exclusive events†1. IntroductionThe purpose of this paper is to present an overview of the SAPHIRE1 probabilistic risk analysis (PRA) computer code ”Recover Cut Sets” editor. The SAPHIRE ”Recover Cut Sets”editor provides a means to develop logic rules that allow for the inclusion of recovery events or the modification or deletion of system or sequence cut sets. This rule-based editor has evolved, from a system used for adding recovery events to system or sequence cut sets, into a more powerful rule-based system that includes features for editing and manipulating cut sets. Consequently, the SAPHIRE “Recover Cut Set” editor can be used to automate advanced PRA techniques such as (1) the incorporation of component or system non-recovery events, (2) the inclusion of common-cause failure cut sets, and (3) the elimination of mutually exclusive events (e.g., restricted or impermissible combinations of events). Since many PRA reference texts (e.g., the PRA Procedures Guide2) address these three techniques, only a brief discussion of each will be provided. Although the discussion and examples deal with nuclear power plants, the ideas presented in this paper could be used to the advantage of other PRA applications.An additional motivation for this paper is to present the PRA community with a method and syntax for modifying cut sets that could become standardized. While many PRA computer codes provide some limited cut set manipulation or deletion capabilities, it would be beneficial if a comprehensive set of cut set modification keywords were used universally by all PRA codes. Since the SAPHIRE code is the first widely available PRA code that contains a comprehensive list of cut set modification keywords, the authors venture to proffer these keywords to the PRA community to foster a standard method and syntax for cut set manipulation.The remainder of this paper is centered on details when using the SAPHIRE “Recover Cut Sets” editor and related nomenclature. Specifically, Section 2 provides a discussion of the syntax used for creating rules. Section 3 shows the methodology used for incorporating non-recovery probabilities in PRA accident sequences. Section 4 shows an example of how to develop rules for handling common-cause failure modeling. Section 5 shows how rules can be created for removing mutually exclusive events. And finally, Section 6 presents concluding thoughts on the SAPHIRE “Recover Cut Sets” editor.2. SAPHIRE “Recover Cut Sets” EditorStructure for the “Recover Cut Sets” editor follows a format similar to that found in traditional programming languages (e.g., BASIC, FORTRAN, or C). As such, the ability exists to define "macros" and "if . . . then" type of structures. After creating or editing rules, SAPHIRE compiles the rules to check their validity. Alternatively, the rules can be entered in any word processor or text editor (that can output ASCII files) and then loaded directly into the SAPHIRE data base. Any errors or omissions in the rules are pointed out by the code. Also, while creating or editing a rule, initiating events, basic events, and recovery actions can all be directly added into the data base.Rules created using the SAPHIRE “Recover Cut Sets” editor can be applied to cut sets for a particular PRA accident sequence, a single event tree, or all sequences in the PRA. Also, the rules can be applied to cut sets for a particular system (i.e., fault tree) or all systems in the PRA. The rules are entered in a "free-form" text editor within the SAPHIRE code. The structure of therules and the keywords that are available is discussed below. Table 1 contains a list of keywords and their definitions used in the SAPHIRE “Recover Cut Set” editor.When applying a rule, SAPHIRE searches the list of either (a) system failure cut sets or (b) event tree accident sequence cut sets. These lists are searched for cut sets that match the search criteria defined in the rule. This searching process is a multi-step procedure.1.If the first cut set in the list matches the search criteria in the first rule, the applicablemodifications defined in the first rule are made to the cut set. Once a cut set qualifies fora search criterion it is not affected by any of the remaining rules.2.If the first cut set in the list does not match the search criteria in the first rule, the secondrule (SAPHIRE processes the rules from top to bottom) is evaluated.3.After all the rules are evaluated for the first cut set, the second cut set in the list isevaluated, starting again with the first rule. This process is repeated until all cut sets are evaluated.Special symbols used in the SAPHIRE “Recover Cut Set” editor are shown in Table 2. Using the boolean operators shown in Table 2, very complex expressions can be defined and used as the cut set search criteria in the rules. To demonstrate these operators, some examples of how the symbols can be used as cut set search criteria are:1.X Basic event X appears in the cut set2.~X Basic event X never occurs in the cut set3./X Success of event X appears in the cut set4.X * Y Both events X and Y appear in the cut set5.X + Y Either event X or Y appear in the cut set6.X*(Y + Z)Either X and Y or X and Z appear in the cut set7.~X*Y X does not appear, but Y does appear.As previously mentioned, the general structure of the SAPHIRE “Recover Cut Set” editor follows the structure one would find in any traditional computer programming language. Shown below are two examples of the actual rule structure and syntax. Example A shows how the "if...then" rule structure can be used to check if a failure of an electric ac power bus event appears in a cut set. If the event does occur, the rule will multiply the cut set containing the event by an operator non-recovery probability named AC-BUS-REC via the "recovery" keyword. Example B is more complicated in that it shows the use of the "elsif" keyword. For this second example, the rule first checks to see if two diesel generator (DG) maintenance events appear in the same cut set. If they do, the cut set is deleted since plant Technical Specifications do not permit two diesel generators to be out of service simultaneously for routine maintenance. Or, if the cut set does not qualify under the first search criteria, the rule checks to see if the initiating events IE-LOSP and IE-SBO appear in the same cut set. If they do, the rule will remove the IE-LOSP initiating event, since a SBO cannot occur without a LOSP.EXAMPLE A| The "if...then" rule structure.| This rule adds a recovery action AC-BUS-REC when either| electric bus B or C is failed.if AC-BUS-B + AC-BUS-C thenrecovery = AC-BUS-REC;endifEXAMPLE B| The "if...then...elsif" structure.| This rule deletes the cut set if both diesel generators are out for maintenance.| Alternatively, if initiating events IE-LOSP and IE-SBO appear in the same| cut set then delete the initiator IE-LOSP.if (DG-1-MAINT * DG-2-MAINT) thenDeleteRoot;elsif (init(IE-LOSP) * init(IE-SBO) thenDeleteEvent = IE-LOSP;endif3. Recovery Actions.In a PRA, cut sets for accident sequences are generated using the fault tree and event tree logic. Since most PRAs are analyzed in failure space, each cut set represents the minimal set of components or systems that have to fail (given a particular initiating event) in order to result in an undesired condition (e.g., core damage). As such, operator actions that could prevent the accident sequence from progressing to the point of an accident may not be specifically includedin the logic models.†† To model the PRA accident sequences as accurately as practical, the analyst will typically want to apply recovery events (as appropriate) to the accident sequence cut sets.The recovery events represent the probability that the operator or operators fail to successfully prevent the accident by restoring one or more of the failed components in the sequence cut sets. Consequently, the recovery events are frequently called the non-recovery probability events. Human reliability analysis is generally needed to quantify what these non-recovery probabilities will be for the particular accident sequences that are being modeled. Several PRA texts discuss the analysis technique of post-accident human reliability and recovery modeling.3,4.5 The NUREG-1150 methodology6 focused on many recovery events for system diagnosis and recovery. Examples of the non-recovery probability for various pressurized water reactor (PWR) systems7 include: (a) non-recovery probability of ac power in 24 hours is6.1 × 10-2, (b) non-recovery probability of the auxiliary feedwater system by manual actuation is2.7 × 10-3, and (c) non-recovery of steam generator integrity by isolating the blowdown line is3.4 × 10-3.To demonstrate the use of the SAPHIRE “Recover Cut Sets” editor, the example below shows how rules can be created to apply recovery actions (or non-recovery probability events) to specific cut sets in a particular sequence. As shown, the rule will add the NRAC-12HR operator recovery event (recovery of DGs within 12 hours) to those cut sets that contain LOSP as the††In nuclear power plant PRAs, an accident is typically defined as damage to the reactor core.sequence initiating event and failure of either DG A or DG B. Once this rule is saved in the PRA data base, SAPHIRE will evaluate all the sequence cut sets and then automatically include the recovery actions as specified in the recovery rule. The search criteria specified in the "if . . . then" line can be as complex as needed.RECOVERY ACTIONS EXAMPLE| Search on LOSP initiator and failure of diesel generators A or B.if init(LOSP) * (DG-A + DG-B) thenrecovery = NRAC-12HR;endif4. Common-Cause Modeling.Common cause failure modeling, one part of dependent failure analysis, is a standard PRA modeling technique. It attempts to model simultaneous failures of multiple components due to a single cause (i.e., a common mode failure). Common cause failures can frequently appear as an important failure event for redundant trains in PRA. Since the time of the WASH-14008 report development, many methods of common cause failure modeling have been proposed. Some of the more popular models include: (a) the Beta Factor method, (b) the Multiple Greek Letter method, (c) the Alpha Factor method, and (d) the Binomial Failure Rate method. A review of these models may be found in various PRA references.9,10In most PRA codes, any of the previously mentioned common cause failure estimation models may be used. Three methods in which common cause modeling can be incorporated into a PRA using SAPHIRE include:1.Manually editing previously generated cut sets to add new common cause failure cut sets.Given large numbers of cut sets, this process can be a very time-consuming and prone to error in that some cut sets may unintentionally be overlooked.2.Rules can be created to search for cut sets containing specific groups of independent,random failure events. Because the target (i.e., the independent failures) is legitimate and is retained in the data base, the cut set is copied. It is the copied cut set that is thenmodified by replacing the independent events with a single common cause term.3.Modifying the logic models to directly model common cause failures. Including commoncause failures directly in the logic models is the method that is traditionally used duringthe fault tree development process.Of the three methods above, the preferred method of common cause modeling will depend on your particular PRA and analysis needs. Some benefits of adding common cause failure events through the use of the SAPHIRE “Recover Cut Sets” editor include (a) rules that are automatically applied to the affected cut sets, (b) not having to make changes to logic models, and (c) the elimination of time-consuming manual editing of cut sets. But, one very important drawback to the use of “Recover Cut Sets” editor for common cause modeling is that groups of independent failures must be present in the cut sets in order for a rule to replace the independent failures with a single common cause failure event. Consequently, if probability or size truncation is used when generating cut sets (which is usually the case for full-scope PRAs), cut sets may be omitted that would be above the truncation limit after being modified by the rule.A case on how the SAPHIRE “Recover Cut Sets” editor can be used to add common-cause events to the cut sets is shown in the following example. The example defines a search criteria that identifies the failure combination of two auxiliary feedwater pumps (pump A and pump B). If these two basic events are found in a cut set, a new cut set will be created that replaces the independent failures of the two pumps with a single common-cause basic event.COMMON CAUSE MODELING EXAMPLE| Pick cut sets that have combinations of AFW-PUMP-A and AFW-PUMP-B.if AFW-PUMP-A * AFW-PUMP-B then| First make a copy of the original cut setCopyRoot;| Now remove the two independent failure eventsDeleteEvent = AFW-PUMP-A;DeleteEvent = AFW-PUMP-B;| Now add the CCF eventAddEvent = AFW-PUMP-CCF;endif5. Mutually Exclusive EventsThe term "mutually exclusive events" refers to two or more basic events that appear in a single cut set (either for systems or sequences) which logically should not appear together. Generally, mutually exclusive events should not appear together in the list of cut sets for one of two reasons.1.Plant Technical Specifications or other operating restrictions may prevent twocomponents from being out of service at the same time. An example is not allowing two AFW pumps to be simultaneously out of service for testing and maintenance.2.Other general logic modeling concerns may lead the analyst to remove specificcombinations of events. An example of this involves the practice of including multipleinitiating events in the fault tree logic. Given this case, sequence cut sets can begenerated that include multiple initiating events.During the PRA logic modeling phase, the analyst may recognize that certain combinations of mutually exclusive events will appear just by knowing how the fault tree and event tree logic modeling was performed. However, some unrecognized mutually exclusive events may not be evident until the analyst generates and evaluates the system or sequence cut sets.As an example of how fault tree logic modeling can produce mutually exclusive events, the fault tree shown in Figure 1 will be used. Generating cut sets for this fault tree will produce a cut set containing the two maintenance events DG-A-MAINT * DG-B-MAINT. If the plant Technical Specifications restrict both diesel generators from being in maintenance simultaneously while at power, this cut set is an example of mutually exclusive events. These mutually exclusive events would be handled by removing any cut sets that contain the mutually exclusive events (even if the cut set includes additional events). Several methods may exist that could perform this removal operation.1.The cut sets can be manually edited to "weed-out" those with mutually exclusive events.This method is not efficient given large numbers of cut sets, and it may result inunintentionally overlooking affected cut sets.2.Adding a complemented top event to event tree sequences that, when generating sequencecut sets, would remove impermissible events.3.Modifying fault tree logic models (via logical NOT gates or complemented events) toeffectively remove impermissible combinations of events.ing the SAPHIRE “Recover Cut Set” editor to create rules to automatically removethose cut sets that contain impermissible combinations of events.Using the SAPHIRE “Recover Cut Set” editor, the following example shows how a rule can be applied to remove a particular cut set from the cut set list. The example defines a “macro”called DGS-IN-MAINT as the search criteria. If the two diesel generators are in maintenance simultaneously then the cut set containing those two basic events is deleted.MUTUALLY EXCLUSIVE EVENT EXAMPLE| Define a macro that targets those cut sets that have combinations| of two diesel generators out for maintenance.DGS-IN-MAINT = DG-A-MAINT * DG-B-MAINT;| Search for the maintenance events and then delete cut set.if DGS-IN-MAINT then| Delete the cut setDeleteRoot;endif6. ConclusionsThis paper presents a method of manipulating PRA accident sequence cut sets using the SAPHIRE “Recover Cut Sets” editor. Examples are presented for the PRA modeling techniques of (a) post-accident operator recovery actions, (b) common cause failure modeling, and (c) the removal of mutually exclusive events. Usually, the rules provide an effective method for the PRA modeling techniques previously discussed, especially when considering the other potential options (e.g., manual cut set manipulation, logic model manipulations) presented.The SAPHIRE “Recover Cut Sets” editor provides a useful method of cut set manipulation for both the inclusion of operator recovery actions and the removal of mutually exclusive events. Use of the “Recover Cut Sets” editor for common cause modeling may not be as useful because groups of independent failures must be present in the cut sets in order for a rule to replace the independent failures with a common cause failure event. Thus, it may be possible to unintentionally omit cut sets that would subsequently be above the truncation limit after being modified by the rule.It is proposed that the PRA community could standardize on the keywords and keyword behavior presented in the paper for modifying cut sets system or sequence cut sets. The keywords used in SAPHIRE were developed with the intent that they would encompass all actions that an analyst would possibly need to perform during cut set manipulation. Consequently, it would be beneficial if these keywords were used universally by all PRA codes in order to further the idea of a PRA “convergence.”NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for any third party's use, or the results of such use, of any information, apparatus, product or process disclosed in this report, or represents that its use by such third party would not infringe privately owned rights. The views expressed in this report are not necessarily those of the U.S. Nuclear Regulatory Commission.Table 1. “Recover Cut Set” editor KEYWORDS used in SAPHIRE.Keyword Definitionif then Indicates a search criteria is being specified.elsif Used to specify an alternative search criteria. Any number of “elsif”commands can be used within a rule.else Used to specify an action to be taken if all the search criteria are not met.The “else” keyword should be used as the last condition in the rule.endif Indicates the end of a particular rule.always Indicates that every cut set in the list that is being evaluated satisfies thesearch criteria.init( )Used in the search criteria to indicate that a sequence cut set has aparticular initiating event.recovery =The recovery event specified is to be added to the cut set being evaluated (IRRAS keeps a record of all recovery events).AddEvent =The event specified is to be appended to the cut set being evaluated.DeleteEvent=The event specified is to be deleted from the cut set being evaluated.NewCutset; A new, empty cut set will be added to the list of cut sets. This new cut set then becomes the cut set that is being evaluated.DeleteRoot;The original cut set (i.e., that cut set that satisfied the search criteria) is to be deleted.CopyCutset;The cut set being evaluated is to be copied and added to the list of cut sets.This copied cut set then becomes the cut set that is being evaluated.CopyRoot;The original cut set (i.e., the cut set that satisfied the search criteria) is tobe copied. This copied cut set then becomes the cut set that is beingevaluated.Table 2. Additional “Recover Cut Sets” editor symbols used in SAPHIRE.Symbol Usage|The "pipe" symbol is used to begin comment lines.~Logical operator meaning "never" or "not present." This symbol is used when it is desired to test on an event not appearing in a cut set.*Logical AND (i.e., intersection) operator.+Logical OR (i.e., union) operator./Signifies the complement of an event (e.g., /A = 1 - A).( )Parentheses may be used to group terms in a logical expression.Figure 1. Example fault tree that contains mutually exclusive events.7. References1.K. D. Russell et al., Systems Analysis Programs for Hands-on Integrated ReliabilityEvaluations (SAPHIRE) Version 5.0, NUREG/CR-6116, Vols. 1 through 10, 1994.2.J. W. Hickman, PRA Procedures Guide: A Guide to the Performance of ProbabilisticRisk Assessments for Nuclear Power Plants, American Nuclear Society and Institute ofElectrical and Electronic Engineers, NUREG/CR-2300, Vols. 1 and 2, January 1983.3.Swain, A. D., and H. E. Guttman, Handbook of Human Reliability Analysis withEmphasis on Nuclear Power Plant Applications, NUREG/CR-1278, SAND80-0200,Sandia National Laboratories, August 1983.4.Bell, B. J. and A. D. Swain, A Procedure for Conducting a Human Reliability Analysisfor Nuclear Power Plants - Final Report, NUREG/CR-2254, SAND81-1655, May 1983.5.Embry, D. E. et al., SLIM-MAUD: An Approach to Assessing Human Error ProbabilitiesUsing Structured Expert Judgment, U.S. Nuclear Regulatory Commission, NUREG/CR-3518, Washington D.C.6.Ericson, D. M. et al., Analysis of Core Damage Frequency: Internal Events Methodology,NUREG/CR-4550, Vol. 1, Rev. 1, Sandia National Laboratories, January 1990.7.Bertucio, R. C. and J. A. Julius, Analysis of Core Damage Frequency: Surry, Unit 1Internal Events, NUREG/CR-4550, Vol. 3, Rev.1, Parts 1 and 2, April 1990.8.Reactor Safety Study, An Assessment of Accident Risk in U.S. Commercial NuclearPower Plants, U.S. Nuclear Regulatory Commission, WASH-1400, 1975.9.Modarres, M., What Every Engineer Should Know About Reliability and Risk Analysis,Marcel Dekker, Inc., New York, NY, 1993.10.U.S. Nuclear Regulatory Commission, A Review of NRC Staff Uses of Probabilistic RiskAssessment, NUREG-1489, March 1994.。
ViewFlex Xtra ICE Catheter 重新处理指南说明书
Page 1 of 7 Reprocessed byInstructions for useReprocessed ViewFlex Xtra ICE CatheterReprocessed device for single useCaution: Federal (U.S.A.) law restricts this device to sale by or on the order of a physician.▪STERILE▪Exposed to Ethylene Oxide (EO) gasExplanation of symbolsSymbolRules/StandardReferenceISO 7000RegistrationNumberSymbol Title DescriptionRx Only 21CFR801 N/A Prescription only Indicates Federal (USA) law restricting device to saleby or on order of a physician.ISO 15223-1Clause 5.1.1 3082 Manufacturer Indicates the medical device manufacturer.ISO 15223-1Clause 5.1.3 2497 Date of manufactureIndicates the date when the medical device wasmanufactured.ISO 15223-1Clause 5.2.3 2501Sterilized usingethylene oxideIndicates a medical device that has been sterilizedusing ethylene oxide.ISO 15223-1Clause 5.1.4 2607 Use-by dateIndicates the date after which the medical device is notto be used.ISO 15223-1Clause 5.1.5 2492 Batch codeIndicates the manufacturer’s batch code so that thebatch or lot can be identified.ISO 15223-1Clause 5.1.6 2493 Catalogue numberIndicates the manufacturer’s catalogue number so thatthe medical device can be identified.ISO 15223-1Clause 5.1.7 2498 Serial numberIndicates the manufacturer’s serial number so that aspecific medical device can be identified.ISO 15223-1Clause 5.4.3 1641Consult instructionsfor useIndicates the need for the user to consult theinstructions for use.ISO 15223-1Clause 5.4.2 1051 Do not re-useIndicates a medical device that is intended for one use,or for use on a single patient during a single procedure.ISO 15223-1Clause 5.2.6 2608 Do not resterilize Indicates a medical device that is not to be resterilized.ISO 15223-1Clause 5.2.8 2606Do not use ifpackage is damagedIndicates a medical device that should not be used ifthe package has been damaged or opened.ISO 15223-1Clause 5.3.2 0624Keep away fromsunlightIndicates a medical device that needs protection fromlight sources.ISO 15223-1Clause 5.3.3 0615Protect from heatand radioactivesourcesIndicates a medical device that needs to be protectionfrom heat and radioactive sourcesISO 15223-1Clause 5.3.4 0626 Keep dryIndicates a medical device that needs to be protectedfrom moisture.Stryker’s Sustainability Solutions ©20231810 W Drake Dr.Tempe AZ, 85283888 888 3433Reprocessed ViewFlex Xtra ICE Catheter DescriptionThe Reprocessed ViewFlex Xtra ICE Catheter is a temporary intracardiac ultrasound catheter intended for use in patients to accurately visualize cardiac structures, blood flow and other devices within the heart when connected to compatible intracardiac ultrasound console via the compatible ViewFlex™ Catheter Interface Module. Examples of the types of devices that can be visualized include, and are not limited to, intracardiac catheters, septal occluders, delivery wires, delivery sheaths, sizing balloons and transseptal needles. The use of these images is limited to visualization with no direct or indirect diagnostic use.The Reprocessed ViewFlex Xtra ICE Catheter has a useable length of 90 cm, with a 9 French (F) shaft with an ultrasound transducer. A 10F introducer is recommended for use with this catheter for insertion into the femoral or jugular veins. The catheter tip has four-directional deflection allowing for Left-Right and Posterior-Anterior deflection, with an angle of at least 120 degrees in each direction.The Reprocessed ViewFlex Xtra ICE Catheter is compatible with the ultrasound consoles listed in the table below. See table below for specifics on each ultrasound consoles.H701375 H700296 Compatible ViewFlex Catheter Interface Module 100038191 H701374100043720Maximum Viewing Depth 18 cm 18 cm 18 cm*All consoles are not available in all countries.a CX50 is a trademark of Koninklijke Philips Electronics.N.V.Indications for useThe Reprocessed ViewFlex Xtra ICE Catheter is indicated for use in adult and adolescent pediatric patients to visualize cardiac structures, blood flow and other devices within the heart.Contraindications for useThe Reprocessed ViewFlex Xtra Ice Catheter is contraindicated:▪If there is an occurrence of conditions that create unacceptable risk during catheterization.▪If the patient that has a mechanical tricuspid valve (a prosthetic tissue valve is permissible).▪If the patient has ongoing sepsis or known hypercoagulable state where the catheter could serve as a focal point for septic or bland thrombus formation.▪If the patient has any condition that, in the opinion of the investigator, contraindicates the placement and use of the cardiac catheter or internal ultrasound.Warnings▪The Reprocessed ViewFlex Xtra ICE catheter and system should be used only by or under the direct supervision of a physician thoroughly trained in sonography and ultrasound technology, or with the assistance of asonographer or physician trained in ultrasound technology.▪The Reprocessed ViewFlex Xtra ICE catheter and system should be used only by or under the direct supervision of a physician thoroughly trained in the techniques of cardiac placement during interventional andelectrophysiology procedures.▪The Reprocessed ViewFlex Xtra ICE Catheter is to be used only with the ViewFlex Catheter Interface Module, the ViewMate and the Phillips CX50 ultrasound consoles. Any other use or inappropriate electrical connection may pose a serious risk to patient safety.▪The Reprocessed ViewFlex Xtra ICE Catheter includes a 9F shaft. The physician should consider anatomical size restrictions if considering use of the ViewFlex Xtra ICE catheter on pediatric patients.▪The Reprocessed ViewFlex Xtra ICE catheter is to be used for ultrasound imaging only.▪Do not immerse the proximal handle or cable connector in fluid. Electrical performance may be affected.▪Do not use the Reprocessed ViewFlex Xtra ICE catheter if the packaging is opened or damaged.▪Do not use the Reprocessed ViewFlex Xtra ICE catheter if it is damaged.▪Tactile feedback of reprocessed devices may vary during use.Precautions▪Do not attempt to use the Reprocessed ViewFlex Xtra ICE Catheter prior to completely reading and understanding the Directions for Use.▪The Reprocessed ViewFlex Xtra Ice catheters are supplied sterile only if packaging is not damaged or open.▪Inspect the packaging and catheter for damage or defects prior to use.▪The Reprocessed ViewFlex Xtra ICE Catheters have been sterilized using EtO. Do not attempt to sterilize the catheters by autoclave, gamma or ultraviolet radiation, or liquid sterilizing solutions.▪Do not bend, kink, stretch, or forcefully wipe the catheter. These actions may damage the catheter.▪Do not use mechanical tools or forceps to grip the catheter.▪Have antiarrhythmic drugs, an external defibrillator, and respiratory assist equipment available in case of complications during the use of this device.▪The device should only be used in patients that have received anticoagulation prior or during the procedure. Adverse reactionsAlthough temporary intracardiac catheter sonography procedures have been proven to be safe, the physician should also be aware that complications can occur with the use of any cardiac catheter.Risks that may be associated with the use of the Reprocessed ViewFlex Xtra ICE catheter are those that may be encountered with the introduction and placement of temporary cardiac catheter or pacing lead. As a result of the delivery of electrical energy during internal defibrillation additional risk may result.Adverse events related to cardiac catheterization have been documented and include, but are not limited to:▪Bleeding, hematoma or thrombus at the catheter introduction site▪Cardiac irritability▪Catheter kinking or excessive bending▪Infection/sepsis▪Intercostal or phrenic nerve stimulation▪Mechanical induction of arrhythmias or asystole▪Perforation causing cardiac tamponade▪Perforation of the chamber or vessel wall▪Pneumothorax▪Pulmonary infarction▪Thrombophlebitis▪Tricuspid valve injury▪VasospasmImportant AdviceAny alleged malfunctions, deficiencies, or deterioration in the characteristics and/or performance of this device, along with any alleged inadequacy in the labeling or Instruction for Use, which might lead or have led to a serious injury or death must be brought to the attention of Stryker Sustainability Solutions.Directions for usePreparationIt is recommended practice to have on hand a duplicate of each sterilized item when introducing a catheter. In case the aseptic technique is compromised the procedure can continue.Image Quality Interference (noise)If severe RF interference is experienced during ablation procedures, relocate and/or shield the Reprocessed ViewFlex Xtra ICE catheter electrical extension and Catheter Interface Module.Catheter Insertion and Positioning1.Follow a suitable surgery protocol. The instruction are provided as a general guide and are intended forinformation purposes only, the physician may alter the catheter insertion techniques based on standard clinical practice.2.The Reprocessed ViewFlex Xtra ICE catheter is intended for use during single patient procedure. Do notattempt to resterilize. Stryker will not accept Reprocessed ViewFlex Xtra ICE Catheters for reprocessing that have been reprocessed and sterilized by other facilities.3.The package label is detachable and may be affixed to the medical record of the patient.4.Before beginning the procedure, verify overall compatibility of all instruments and accessories.5.Connect the patient to a vital signs monitor. Track patient vital signs throughout the procedure.6.Inspect packaging before opening. The contents of the package are sterile if the package has not beencompromised.7.Do not use the Reprocessed ViewFlex Xtra ICE Catheter if the sterility has been compromised. If the packageis damaged or if it was opened and the instrument not used, return the Reprocessed ViewFlex Xtra ICECatheter and the package to Stryker.8.Prepare the insertion site using cutdown or percutaneous entry technique. Use a 10F or larger introducersheath.NOTE: It is possible to transfix the femoral artery during percutaneous entry into the femoral vein. Follow proper femoral vein puncture technique.ing proper sterile technique, remove the Reprocessed ViewFlex Xtra ICE Catheter from the package andplace i t in a sterile work area.10.Carefully inspect the catheter for tip integrity and catheter condition. Do not use the catheter if any damage isnoted. Return the Reprocessed ViewFlex Xtra ICE Catheter and packaging to Stryker if it is not in acceptable condition for the procedure.11.Connect the Reprocessed ViewFlex Xtra ICE Catheter connector edge to the ViewFlex Catheter InterfaceModule. Refer to the ViewFlex Catheter Interface Module Instructions for Use for additionalinstructions, precautions, and information on catheter connection.12.Prior to insertion, test that the catheter is imaging by placing the tip in sterile fluid. Movement willappear on the ultrasound console monitor.13.Hold the catheter 1 to 2 cm from the introducer valve and feed it into the introducer slowly to preventbuckling of t he catheter tip.14.Gently insert the catheter into the selected vein and advance the catheter into the heart. Confirm catheterposition with the use of fluoroscopy, if needed. Do not remove and re-insert the catheter into the introducer more than two (2) times during the procedure.15.The Reprocessed ViewFlex Xtra ICE Catheter tip may be deflected as desired during the procedure:▪For Posterior – Anterior deflection, rotate the gray deflection knob labeled P/A clockwise or counterclockwise▪For Left – Right deflection, rotate the green deflection knob labeled L/R clockwise or counterclockwise16.The catheter handle should be secure at all times during the procedure. Do not allow the catheter handle orconnection cable to fall or tug on the catheter body.NOTE: Do not leave the catheter in the patient longer than 12 hours. Transducer performance or incidence of insertion site complications increase significantly with catheters which remain in dwelling longer than this specified time.17.Return both knobs to the neutral position to straighten the distal tip of the catheter before removing thecatheter from the heart. Using fluoroscopy, verify that the distal tip of the catheter is straightened beforeremoving the catheter f rom the heart.18.Refer to the ultrasound console Users’ Manual for additional sonography instructions, precautions, andinformation on catheter connection.Storage and handling▪Room Temperature: 18°C to +26°C (64°F to 79°F)▪Use product on a first-in, first-out basis prior to expiration or use by date on the labelTransport▪Temperature: -20°C to +50°C (-4°F to 122°F)▪Relative Humidity: 25% to 90%Standards and IEC ClassificationsThe Reprocessed ViewFlex Xtra ICE Catheter meets all pertinent clauses of IEC 60601-1 Edition 3+A1;A2, IEC 60601-1-2 Edition 4.0, and IEC 60601-2-37 Edition 2.1.If the Reprocessed ViewFlex Xtra ICE Catheter experiences loss or degradation of the essential performance described in these instructions as a result of EMC disturbances, there would be no effect to intended use.The medical device is suitable to be used in the Professional Healthcare Facility Environment. WarrantyReprocessed productsStryker warrants all reprocessed products, subject to the exceptions provided herein, to be free from defects in reprocessing and to substantially conform to the product specifications contained in the documentation provided by Stryker with the products for one use in accordance with the instructions for use of such product.Products for which Stryker is the original manufacturerStryker warrants all products for which it is the original manufacturer, subject to the exceptions provided herein, to be free from defects in design, materials and workmanship and to substantially conform to the product specifications contained in the documentation provided by Stryker with the products for a period of one year from the date of purchase.General warranty terms applicable to all productsTo the fullest extent permitted by law, the express warranty set forth herein is the only warranty applicable to the products and is expressly in lieu of any other warranty by Stryker, expressed or implied, including, but not limited to, any implied warranty or merchantability or fitness for a particular purpose. In no event will Stryker’s liability arising in connection with the sale of the product (whether under the theories of breach of contract, tort, misrepresentation, fraud, warranty, negligence, strict liability or any other theory of law) exceed the purchase price, current market value or residual value of the products, whichever is less. Stryker shall not be liable for indirect, special, incidental, punitive, or consequential damages resulting from any breach of warranty or under any other legal theory.This warranty shall apply only to the original end-user purchaser of products directly from Stryker or a Stryker authorized distributor. This warranty may not be transferred or assigned without the express written consent of Stryker.This warranty does not apply to: (1) products that have been misused, neglected, modified, altered, adjusted, tampered with, improperly installed or refurbished; (2) products that have been repaired by any person other than Stryker personnel without the prior written consent of Stryker; (3) products that have been subjected to unusual stress or have not been maintained in accordance with the instructions in the user manual or as demonstrated by a Stryker representative; (4) products on which any original serial numbers or other identification marks have been removed or destroyed; or (5) products that have been repaired with any unauthorized or non-Stryker components.If a valid warranty claim is received within thirty (30) days of the expiration of the applicable warranty period, Stryker will, in its sole discretion: (1) replace the product at no charge with a product that is at least functionally equivalent to the original product or (2) refund the purchase price of the product. If a refund is provided by Stryker, the product for which the refund is provided must be returned to Stryker and will become Stryker’s property. In any event, Stryker’s liability for breach of warranty shall be limited to the replacement value of the defective or non-conforming part or component.If Stryker determines in its reasonable discretion that the claimed defect or non-conformance in the product is excluded from warranty coverage as described hereunder, it will notify the customer of such determination and will provide an estimate of the cost of repair of the product. In such an event, any repair would be performed at Stryker’s standard rates.Products and product components repaired or replaced under this warranty continue to be warranted as described herein during the initial applicable warranty period or, if the initial warranty period has expired by the time the product is repaired or replaced, for thirty (30) days after delivery of the repaired or replaced product. When a product or component is replaced, the item provided in replacement will be the customer’s property and the replaced item will be Stryker’s property. If a refund is provided by Stryker, the product for which the refund is provided must be returned to Stryker and will become Stryker’s property.ViewFlex and ViewMate are trademarks of St. Jude Medical, Inc.ICE EL10105 Rev. E 07/2023 RM705008。
nocode材料参数设置解读课件
已设置 nocode材料参数设置解读
对Glyph的属性进行若干设置，即设置 双击本Glyph可见的选项
Edit materials Mapping
• 进入本设置之前会出现以下提示
流程若搭建好则会出 现本选项，选择Yse， 则先运行一遍Flow之 后再进行数据设置
因本Glyph你是否需要运行现有的Flow （流程），无论流程是否搭建完善均 会出现本选项
因此，数据的灵敏性编辑才可以进行 变更（performed意译）
本处建议选择NO
nocode材料参数设置解读
Edit materials Mapping
材料类型 标准SN材料 标准EN材料 Dang Van材料 SN平均多曲线材料 SN多比例多曲线材料 SN海格多曲线材料 EN平均多曲线材料 EN多比例多曲线材料 焊点材料 韩风材料
屈服强度（极限）
抗拉强度（极限）
弹性模量
弹性泊松比 弹性泊松比
而我们常用的泊松比仅为弹性
应力范围截断
第一疲劳强度指数 疲劳转换点
第二疲劳强度指数
应力比R，最小应力/最大应力，R=-1意味等副反向加载 大于本值，则认为不会破坏
平均应力系数
nocode材料参数设置解读
99未知是否进行过热处理的铁（钢材） 100、锻造的，加工的，精细的铝
• 本处设置表面粗糙度（粗糙度范围0.012~100微米，14个等级） 钣金件取值范围为1.6~32微米 车身钣金件通常取3.2 非配合表面粗车可取6.3~25 配合表面精车可取1.6~6.3
nocode材料参数设置解读
表面粗糙度详细介绍
通常铸件的表面 粗糙度选择25微 米，做桥壳分析 时可以选择25也 可以选择as cast 的表面处理方式
长期完整性的分层容错 论文翻译_0
长期完整性的分层容错论文翻译长期完整性的分层容错秉健春，佩特罗斯曼尼阿蒂斯英特尔研究大学伯克利分校斯科特 Shenker，约翰 Kubiatowicz 美国加州大学伯克利分校摘要通常，容错服务有关的假设类型和故障，他们可以容忍的最大数量这种故障时，同时提供其正确性的保证;阈值是侵犯性，正确性丢失。
我们重新审视的概念在长期归档存储方面的故障阈值。
我们注意到，故障阈值不可避免地长期违反服务，使得传统的容错不适用长期的。
在这项工作中，我们进行的再分配容错预算的一项长期的服务。
我们分裂投入服务件的服务，每一个都可以容忍不同没有失败的故障数（并不会造成整个服务失败）：每件可在一个关键值得信赖的过错层，它必须永远不会失败，或不可信的故障层，它可以大量经常失败，或其他故障层次之间。
通过仔细工程的一项长期的服务分裂成片，必须服从不同的故障阈值，我们可以延长其必然灭亡。
我们证明了这一点做法 Bonafide，一个长期的 key - value 存储，与所有类似的文献中提出的系统，在保持完整性面对拜占庭故障，无需自我认证的数据。
我们描述了分层容错的概念，设计，实施， Bonafide 和实验1/ 3评价，并主张我们的做法是一个实际仍未显著改善在长期服务的艺术状态。
一，引言当前容错复制服务设计往往不适合长期的应用，如档案，数字文物，这是越来越重要的存储 [42]，为企业的监管[5， 6]，文化[36]原因。
从典型的故障假设这不合适结果这类系统的正确性空调。
例如，在典型的拜占庭容错（BFT）系统[13]，它是假定复制故障副本的数目总是比一些不太固定阈值，如副本人口的 1 / 3。
在典型的短期的应用，这样一个 uniformthreshold 基于故障假设是合理的，可以实现的。
例如，可以说在一个 wellmaintained 人口多元化，高保证副本服务器，由当时总人口的三分之一被打破生长进入或刚刚出现故障，故障副本的运营商可以修复它们。
止裂孔与ＣＦＲＰ 复合修复含裂纹钢结构的疲劳性能
输的重要物流枢纽ꎬ起重机作为最主要的港口机械之
效ꎮ 对于大型结构而言ꎬ更换受损构件需要付出高昂
一ꎬ是港口高效率完成船舶装卸作业、货物储存、转载
的时间成本和经济成本ꎬ相较而言修复加固技术优势
运输的重要物流技术装备ꎮ 起重机的工作环境恶劣、
巨大ꎮ
∗２０１９１２１５ 收到初稿ꎬ ２０２００１０２ 收到修改稿ꎮ 国家质量基础的共性技术研究与应用重点研发计划项目 (２０１８ＹＦＦ０２１３３０２) ꎬ 中央高校基本科研业
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２０２１ꎬ ４３(２) :４１８￣４２４
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止裂孔与 ＣＦＲＰ 复合修复含裂纹钢结构的疲劳性能 ∗
ＳＴＵＤＹ ＯＮ ＦＡＴＩＧＵＥ ＰＥＲＦＯＲＭＡＮＣＥ ＯＦ ＣＲＡＣＫＥＤ ＳＴＥＥＬ
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材料 外文翻译 外文文献 英文文献 圆弧型柔性铰链刚度特性分析
作者：Chunhui Yang Shimin Luo国籍：China出处：2010 Intemational Conference on System,Engineering Drdign and Manufacturing InformatizationCircular are flexible hinge stiffness character analysis Abstract-Flexible hinges are widely used in micro robotic. Its tigidity directly influences an organization’s terminal localization. Its actual structure geometry size cannot satisfy the theoretical analysis completely in a theoretical supposition condition. In this paper. We analayzed the rotation rigidity of a ellliptical flexible hinge in different parameters using finite element software ANSYS. The errors are discovered and compared with theoretical result. Though the graph of the flexible hinge parameters on the performance of a elliptical flexible hinge was carried out. The key manufacture parameters that affect the performance of an elliptical flexible hinge the most and rules of design are given, which can provide directions of design precision for the flexible hinge.Keywords-flexible hinge; elllipse; finite element analysisl;rigidityⅠ.INTRODUCTIONFlexible hinge have some characteristics, such as small volume, without tubs, ceaseless, good rigidity and high sensitivity. With micocomputer electrical system series (MEMS) technical rapidly expanding, flexible hinge are widely applied in the displacement which requests small angular and high-precision rotation, such as gyroscopes,accelerometers, percision instruments and so on. It has broad application prospects in the micron level domain.The common flexible hinge is in two kinds:beam-shape flexible hinge and arc-shaped flexible hinge. The beam-shaped flexible hinge has a big slewing area, but the movement precision is bad. The arc-shaped flexible hinge’s movement percision is bad. The arc-shaped flexible hinge is relatively small. In order to take into account the movement ptecision and scope, the following several rotation flexible hinges have been generated: parabolic flexure hinge, an elliptical flexure hinge and a hyperbola-shaped hinge, etc. The properties of flexible hinges are rigidity precision and stress characteristic etc. the rigidityperformance reflects the stress ability and also manifests movement to a vice-flexible degree. In 1965, Parosetal announced his design development of the circular flexible hinge for the first time, and gave the rigidity formula.Smithetal used the similar method to obtain an elliptic flexible hinge mechanics expression. Nicolae Lodonitu inferred the parabola and the hyperbolic flexible hinge’s rigidity formula. Wei Xu and Tim king analyzed the tectang ular and elllipse flexible hinge’s rigidity and rotarion precision using the finite element method.In this paper the elliptical flexible hinge stiffness to different geometrical parameters is analyzed with software ANSYs10.0. Compared with ressults of theoretical analysis and finite element analysis(FEA), the errors are analyzed. Theough the graph of the flexible hinge parameters and its performanve, an analysis of changes of parameters on the performance of the elliptical fexible hinge was carried out. The key manufacture parameters that affect the performances of an elliptical flexible hinge the most and rules of design are given, which can guve direcrions of design precision for the flexible hinge.Ⅱ.RIGIDITY FORMULA OF THE ELLIPTICAL FLEXIBLE HINGEAn elliptical flexible hing,as shown in Figure 1, is a particular type of flexure that consists of a neckde down section. Parameters t,h,b are flexible hinge’s smallest thickness,height and width ,resoectively, Parameter x α is the semimajor axis of ellipse, and y α is the semimajor axis of elllipse.As shown in Figure 1(a), the infinitesimal is intercepted in the abscissa axis. To begin, the infinitesimal section is vertical to the abscissa axis. The flexible hinge’s angular deformation z α is generated under torque z M as given in Equation(1).()()θθθαππd a t Eba a M dx x EI x M y y x z a a z z xz ⎰⎰--⎪⎪⎭⎫ ⎝⎛-+==233cos 22cos 12（1）)12()14()1416(214arctan )14()12(12cos 22cos 2234223++++++++=⎪⎪⎭⎫ ⎝⎛-+=⎰-s s s s s s s s s d a t f y θθθππ（2）Where t a s y= The rotation rigidity fotmula is given by Euation(3)1312f a Eba K x y=(3)When y x αα=, the flexible hinge is the circular flexible hinge. Its rotantion rigidity formula is given by Equatuin(4)fEba K 122=(4) The rorarion rigidity formula of circular flexible hinge is consistent with thereference[2].(a)(b)Figure 1 Model of elliptical flexible hingeⅢ. FEA MODEL OF ELLIPTOCAL FLEXIBLE HINGEAnsys has some characteristics that the general finite element analysis technologt, powerful computing, and reliable result. The elliptical flexible hinge’s basic srtuture size is mm R mm t mm b m 5.2,90,1,100====θ. The materical is bertllium copper alloy, GPa E 210=,3.0=v . The FEA model is shown in Figure2(a). The model left end surface is restrained completely, the right end surface exerts bending moment Nm M 1.0=. The special node 1 of the grid model right end surface represents the output displacement. The unit type chooses 3_D the entity SOLID92 unit model, the entire model usrs Smartsize to free mesh. The deformation of the FEA model is shown in Figure 2(b). The FEA model and the output displacement have been obtained with chang ing elliptical flexible hinge’s paramters E,b,t and x αas well as y α(a)(b)Figure 2 . FEA model of elliptical flexure hingeThe theoretical calculation and FEA rotational stiffness are obtaoned through changing elliptical flexure hinge’s parameters E,b,t and x αas well as y α, as shown in Figure 3 to 7.Figure 3. Comparison of FEA value and the theoretical value of flexure hinge with changing EFigure 3. Comparison of FEA value and the theoretical value of flexure hingewith changing width bFigure 5. Comparison of FEA value and the theoretical value of flexure hingewith chinging thickness tFigure 6. Comparison of FEA value and the theoretical value of flexure hingewith chinging semimajor axisxFigure 7. Comparison of FEA value and the theoretical value of flexure hingeαwith chinging semimajor axisyFrom Equation (3) and Figures 3 to 7 the following conclusions can be observed.(1)From Figures 3and 4 it can be observed that the rotation stiffness is a linearlyincreasing realtion with material young’s modulus E and width b. The FEA value is bigger than the theoretical value. When E and b are smallerm the FEA value and the theoretical value are closer .(2)From Figure 5 it can observed that the rotantion of the stiffness FEA value and thetheoretical value is a vurve increasing with thickness t, end the speed-up is getting quicker and quicker. When t is bigger, the difference of the theoretical value and the FEA value is bigger. When t<2mm, the FEA value and the theorerical value are close.(3)From Figure 6 it can observed that the rotantion of rotation rigidity and semimajorαis a decreasing curve, and the rate of reduced scope is gradually decreased.axisxα>3mm, the FEA value and the theoretical value are closer.Whenx(4)From Figure 7 it can observed that the rotantion of rotation ridity and semiminor axisαis a linearly increasing, but the increasing scope is small. The FEA value is bigger ythan the theoretical value.From Figure 3 to 7 it can observed that the influence of flexure hinge’s parameter toits rotation stiffness is:the influence of thickness t is biggest, followed by semimajor axis x α, semimajor axis y αwidth b and E.The theoretical value and the FEA value of an elliptical flexible hinge rotation rigidity is not equal, even if has a big differential value. The reasons are:(1) The flexible hinge theoretical model that is eastablished using materials mechanics’bending strain theory is built on the basis of certain assumptions.From Figure 2(b) it can be observed that the FEA model not only has the displancement in the y axis direction, but also has the displacement change on the z axis direcrion, when the torque z M exerted on the z axis for the model. In other words, the flexible hinge not only has the bending strain,but also will have the shearing force to cause upward deformation. Under certain design parameters, the flexible hinge’s theory and FEA solution achieve a good match.Ⅳ.CONCLUSIONSThe different design parameters to the flexible hinge rotation rigidity influence and the linear relationship are obtained by comparing the rotation rigidity theory solution stiffness is:the influence of thickness is biggest,followed by semimajor axis R,width b and E. The teasons that the theoretical value and the FEA value of an elliptical fexible hinge not only has the bending strain,but also will have the shearing force to cause upward deformation. It is helpful to further analyze the movement of the mechanical deformation mechanism, using the finite element technology to simulate the flexible hinge performance.圆弧型柔性铰链刚度特性分析摘要：柔性铰链是目前被广泛用于微动机器人的主要部件之一，其刚度性能直接影响微动机器人的终端定位。
crotex-几种常见错误
Error[Cp001]: Copy protection check, No valid license found for this product [20]原因：安装的时候没有把注册机的0x.....字串的小写字母改为大写字母。
Warning[Pe001]: last line of file ends without a newline F:\emoTion\IAR\PK升级\CC1110-8\main.c原因：在使用IAR时常常会弹出类似这样一个警告,其实只要在最后一行多加一个回车就不会再有这个警告了.Error[e72]: Segment BANK_RELAYS must be defined in a segment definition option (-Z, -b or -P)原因：这是用730B编译的错误，可能是由于相对于目标工程版本过高的，后改用720H，没有发生错误。
Error[Pe005]: could not open source file "stdio.h"原因：头文件路径不对造成，改正的方法是在设置选项卡的C/C++ Compiler -> Preprocessor选项里，将$TOOLKIT_DIR$\INC\CLIB\添到Include paths中。
Error[Pe005]:could not open source file "hal.h" C:\Users\user\Desktop\例子程序\无线通信综合测试\Library\cc2430\HA L\source\setTimer34Period.c原因：先检查C:\Users\user\Desktop\例子程序\无线通信综合测试\Library\cc2430\HAL\source\有无setTimer34Period.c这个文件，若有，则是因为IA R对中文路径支持不好的缘故，把这个工程复制到英文路径下编译就不会发生错误。
abstractprocessor 用法 -回复
abstractprocessor 用法-回复使用"abstractprocessor"的步骤在软件开发中，处理抽象的概念是常见的任务。
为了更好地管理和操作抽象数据，开发人员经常会使用抽象处理器(abstract processor)。
本文将介绍使用抽象处理器的步骤，并对每个步骤进行详细阐述。
第一步：了解抽象处理器的概念和用途（200字）抽象处理器是一种软件模式，用于处理抽象概念。
它通过定义和实现一组接口和抽象类，允许开发人员在具体实现之前处理抽象数据。
抽象处理器可以帮助开发人员提高代码的可重用性、可维护性和可扩展性。
它们还可以降低代码的耦合性，使开发人员能够更轻松地修改和扩展现有功能。
抽象处理器在许多领域都有广泛的应用，包括图像处理、文本分析和数据转换等。
第二步：确定需要处理的抽象概念（200字）在使用抽象处理器之前，您需要明确需要处理的抽象概念。
这可能是一个数据结构、一个算法或一个领域特定的概念。
确定所需的抽象概念非常重要，因为它将指导您在之后的步骤中设计接口和抽象类。
例如，如果您想处理图像，您可能需要定义一些处理图像的接口，如裁剪、调整大小和应用滤镜等。
第三步：设计抽象处理器的接口和抽象类（300字）一旦您确定了要处理的抽象概念，接下来的步骤是设计接口和抽象类。
抽象处理器的接口定义了要提供的操作列表，而抽象类则提供了部分实现。
接口应该是高度抽象的，只定义方法的签名而不涉及具体的实现细节。
抽象类可以根据需要提供默认实现，以便您的具体处理器可以选择性地覆盖它们。
通过良好的接口和抽象类设计，可以确保您的抽象处理器具有良好的扩展性和灵活性。
第四步：实现具体的处理器（300字）完成接口和抽象类的设计后，接下来需要实现具体的处理器。
具体处理器是抽象处理器的具体实现，根据实际需求编写代码。
在实现具体处理器时，您需要根据已定义的接口和抽象类来编写代码，以实现所需的功能。
具体处理器应该尽可能地符合抽象处理器的设计原则，以便能够轻松地替换或增加新的处理器。
单向热塑性复合材料层压板偏轴拉伸试验及其数值模拟
单向热塑性复合材料层压板偏轴拉伸试验及其数值模拟
张健;陈秀华;陈勇;范寅
【期刊名称】《上海交通大学学报》
【年(卷),期】2023(57)2
【摘要】AS4/PEEK作为一种高性能的热塑性复合材料在航空航天、军事和汽车等领域应用广泛.对不同角度的单向AS4/PEEK层压板进行偏轴拉伸试验,获得了相应的应力-应变曲线、拉伸强度和断裂面角度.在数值模拟中,采用单参数三维塑性模型描述AS4/PEEK的非线性力学行为,模型中的塑性参数使用信任域反射算法得到.结合LaRC05准则和裂纹带理论开发了基于Abaqus的用户材料子程序VUMAT,并将其应用于偏轴拉伸的数值模拟.结果显示该三维弹塑性损伤本构模型能够较准确地模拟AS4/PEEK的塑性效应,且预测的拉伸强度与试验结果吻合良好.本文提出的三维弹塑性损伤模型为热塑性复合材料塑性变形和损伤的综合分析提供了一种准确且有效的方法.
【总页数】12页(P201-212)
【作者】张健;陈秀华;陈勇;范寅
【作者单位】上海交通大学机械与动力工程学院;上海交通大学航空航天学院【正文语种】中文
【中图分类】TB332
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对于初学MaterialsStudioCASTEP问题整理
问题如下1、Symmetry 下的unbuild crystal, Nonperiodic, Superstructure, Make P1, Redefine options各有什么作用？答：Unbuild crystal：得到最小非对称单元的结构Nonperiodic：去掉结构的周期性，形象地说就是把盒子去掉。
Superstructure：构建超晶胞结构，也就是扩大最小重复单元（或则说晶胞）Make P1：去掉晶体结构中的所有点对称操作，只保留其平移对称性Redefine lattice：重新定义晶胞中基矢的方向2、图表的含义是什么？Atomic Populations (Mulliken)Species Ion s p d f Total Charge (e)O 1 1.91 4.99 0.00 0.00 6.90 -0.90O 2 1.91 4.99 0.00 0.00 6.90 -0.90O 3 1.91 4.99 0.00 0.00 6.90 -0.90O 4 1.91 4.99 0.00 0.00 6.90 -0.90O 5 2.01 5.08 0.00 0.00 7.08 -1.08O 6 1.84 4.87 0.00 0.00 6.71 -0.71Ca 1 2.14 6.00 0.47 0.00 8.61 1.39Ti 1 2.32 6.24 2.22 0.00 10.78 1.22Ti 2 2.32 6.24 2.22 0.00 10.78 1.22Ba 1 1.76 6.01 0.70 0.00 8.46 1.54答：以O为例子Species Ion s p d f Total Charge (e)O 1 1.87 4.79 0.00 0.00 6.65 -0.65计算以前O的电子结构是2s2 2p4，Total ＝6（e ）计算后O的结构变为2s1.872p4.79，Total ＝6.65（e ）-0.65 表明优化以后，O得到0.65（e ）如果考虑的是纯离子，当然就是＋4和－2了。
半导体激光器制造工艺英文
半导体激光器制造工艺英文英文回答：Semiconductor Laser Manufacturing Process.The manufacturing process of semiconductor lasers involves several key steps, including:1. Epitaxial Growth: A thin layer of semiconductor material is grown on a substrate using a process called molecular beam epitaxy (MBE) or metal-organic chemical vapor deposition (MOCVD). This layer forms the active region of the laser.2. Mesa Etching: The active region is patterned using photolithography and etching techniques to create a mesa structure. The mesa defines the lateral dimensions of the laser cavity.3. Cleaving: The wafer is cleaved along specificcrystallographic planes to create the laser facets. The facets provide optical feedback for the laser cavity.4. Metallization: Ohmic contacts are deposited on the facets and the top of the mesa to provide electrical connections.5. Packaging: The laser chip is mounted on a heat sink and packaged to provide protection and thermal management.Various additional steps may be employed to enhance laser performance, such as:Anti-reflective (AR) Coating: AR coatings are applied to the facets to minimize optical losses.High-reflective (HR) Coating: HR coatings are used to improve cavity feedback and increase laser output power.Facet Passivation: Facet passivation techniques are used to prevent degradation and improve laser reliability.中文回答：半导体激光器制造工艺。