deploying websphere for scalability and fault tolerance

... 19memory and on disk.1.3 Existing Approaches to Software Fault Tolerance Current strategies for reducing the impact of software errors on systems fall into twoclasses: fault prevention and fault tolerance ... availability.Since fault prevention alone is not effective, software fault tolerance techniques areused to detect and mask errors when they occur in the system Like hardware faulttolerance, software fault tolerance ... of outages to 62% By 1989, the second and third largest contributors,operations and hardware, were at fault only 15% and 7% of the time, respectively For Tandem, the trend is not due to worsening

Ngày tải lên: 28/04/2014, 13:32

... patterns resulted in 4-banded patterns in F individuals, and 1:2:1 ratio of segregating 2-banded and 4-banded patterns in the F progeny Thus, Adh electrophoretic data of the parents and progeny of genetic ... lacking for most of the successful colonising and widespread drosophilids (David and Tsacas, 1981; David and Capy, 1988) D ananassae constitutes one of the most successful colonising and domestic ... exhibit a 2-banded pattern and the observed Adh electromorphs correspond to post-translational or conformational isozymes The present observa-tions correspond to what has been known for Adh for a long

Ngày tải lên: 14/08/2014, 19:22

... provide fault-tolerance in optical networks and wireless mesh networks In this chapter, the protection methods for PONs and WMNs are reviewed, and recent research literature on fault-tolerance for ... background and literature review on tolerance provisioning in PON and WMN We then discuss related works on fault-tolerance planning and provisioning in WOBANs and analyze their limitations Trang 22fault-In ... provides background on broadband access technologies and an overview on the new architecture WOBAN The importance of fault-tolerance and especially optical fault-tolerance in WOBAN are discussed

Ngày tải lên: 01/10/2015, 11:39

... FAR and FDR 23 2.4 An example with FDR for a drift fault 24 2.5 EDD performance for constant additive faults 26 2.6 EDD performance for drift faults 26 2.7 EDD performance for ... Trang 1Performance Assessment for Process Monitoring and Fault Detection Methods Kai Zhang Trang 2Performance Assessment for Process Monitoring and Fault Detection MethodsTrang 3Kai ZhangPerformance ... laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and

Ngày tải lên: 14/05/2018, 15:39

... DD1 (1 and 2) contacts 1 and 2 open, and 1 and 3 close, de-energizing the dispenser and putting a supply to one side of the 10 min timed contacts T2 5. You can now sit down, relax and enjoy ... of AND and OR systems is shown in Figure 1.12 , and would be typical of, say, a remote start/stop control circuit for a motor A or B or C will only operate the contactor coil if X and Y and ... Earth Fault Loop Impedance .70 Earth Electrode Resistance 74 Functional Testing 79 Prospective Fault Current 81 CHAPTER 4 Fault Finding .85 Signs and Symptoms 85 Ring and Radial

Ngày tải lên: 20/10/2021, 21:48

... catalyst For instance, 1D Pt NWs/Ti0.7W0.3O2 catalyst exhibits a low onset potential (~0.1 VNHE for MOR and ~0.2 VNHE for EOR), high mass activity (355.29 mA mgPt-1 for MOR and 325.01 mA mgPt-1 for ... (260 23 mA mgPt-1) and largest If/Ib ratio (1.34), which are 2.0- and 1.57-fold greater than those of 20 wt% Pt/C TEK) catalyst (130.62 mA mgPt-1 for mass activity and 0.85 for If/Ib value, respectively) ... alternative for the common carbon material in the function of catalyst support for fuel cells (E-For the first time, a combination of using non-carbon nanosupport and tuning the morphology and structure

Ngày tải lên: 13/10/2022, 08:21

... Thanh Ho, Synthesis and characterization the multifunctional nanostructures Ti xW1-xO2 (x = 0.5; 0.6; 0.7; 0.8) supports as robust non-carbon support for Pt nanoparticles for direct ethanol ... Fuels, Energy and Environment (ICAFEE 2019): Future and Challenges, Feng Chia University, Taichung, Taiwan, October 19-20, 2019 Trình bày báo cáo dạng Poster 2 Asian Clean Energy Forum 2019, Asian ... Huynh, Son Truong Nguyen, Nam Nguyen Dang, Long Giang Bach, Van Thi Thanh Ho, Superior CO-tolerance and stability toward alcohol electro-oxidation reaction of 1D-bimetallic cobalt nanowires

Ngày tải lên: 29/10/2022, 03:55

... and the 'true disease state/ class' Because no gold standard for metritis scoring and Model of decision levels and categories for motivation Figure 2 Model of decision levels and categories for ... treatments and longer withdrawal period of milk in organic herds, or for other reasons As an aid to understanding the quote, note that the veterinarian equates 'smell' and metritis score 5 or higher, and ... files becomes essential before any quantitative analysis can be conducted and interpreted Intra- and inter-observer agreement about the manifestations and criteria for treat-ment must be estimated

Ngày tải lên: 25/10/2012, 10:45

... expenditures and incomespayment for customers, bank and National budget… - Goods and materials accountant is in charge of supervising and generlising information relate to in-put and out-put materials ... use Form 01- LDTL- Time sheet Form 02- LDTL- Payroll Form 03- LDTL- Leaves paid by social insurance Form 04- LDTL- Social insurance payment voucher Form 05- LDTL- Bonuses payment voucher Form ... unload material buildingand other goods * Hotel, restaurant and tourism business and other tourism services * Exploits ore for smelting , manufactures agriculture and forestryproducts * Import-export

Ngày tải lên: 25/10/2012, 16:12

... out of the requirements Fault removal is imperfect, so fault forecasting and fault tolerance are needed 1.3.3 Fault/ Failure Forecasting Fault forecasting, or failure forecasting, includes dependability ... prevent fault introduction and occurrence; • Fault removal: to detect the existence of faults and eliminate them; • Fault/ failure forecasting: to estimate the presence of faults and the occurrence and ... (fault avoidance and fault tolerance) , and (2) those that contribute to validation of the software after it is developed (fault removal and fault forecasting) Briefly, the techniques are: • Fault...

Ngày tải lên: 09/08/2014, 12:23

... diversity for fault tolerance Team-Fly® Structuring Redundancy for Software Fault Tolerance % purposes—data and temporal diversity To assist in developing and evaluating software fault tolerance ... combination of techniques from four risk mitigation areas: fault avoidance, fault removal, fault forecasting, and fault tolerance Unfortunately, there is no single combination of these techniques ... Redundancy for Software Fault Tolerance "# • They provide well-defined interfaces for the definition and imple- mentation of fault tolerance schemes • They consist, in general, of three parts of a fault- tolerant...

Ngày tải lên: 09/08/2014, 12:23

... A., and T Anderson, Fault Tolerance: Principles and Practice, New York: Springer-Verlag, 2nd ed., 1990 [61] Duncan, R V., Jr., and L L Pullum, “Object-Oriented Executives and Components for Fault ... provides a basis for understanding the space and time requirements of, and possible trade-offs between, the software fault tolerance techniques being considered for use Software fault tolerance also ... Cost-Effective and Flexible Scheme for Software Fault Tolerance, Univ of Newcastle upon Tyne, Tech Rep No 372, 1992 [65] Xu, J., A Bondavalli, and F DiGiandomenico, Software Fault Tolerance: Dynamic...

Ngày tải lên: 09/08/2014, 12:23

... 92] summarizes the key fault tolerance activities and issues for this phase • Description of system behavior in presence of faults: Fault assumptions (faults considered, faults discarded); • System ... Concept,” in M R Lyu (ed.), Software Fault Tolerance, New York: John Wiley and Sons, 1995, pp 1–21 [21] Anderson, T., and J Knight, “A Framework for Software Fault Tolerance in RealTime Systems,” ... Software Fault Tolerance Techniques and Implementation Table 4.2 Software Fault Tolerance Dependability Investigations Comment References Combined analysis of hardware and software fault tolerance...

Ngày tải lên: 09/08/2014, 12:23

... illustrations and discussion of architectures for NVP tolerating one fault and that for tolerating two consecutive faults 4.2.3.2 Performance There have been numerous investigations into the performance ... invocations Laprie and colleagues [19] provide illustrations and discussion of architectures for NSCP tolerating one fault and that for tolerating two consecutive faults 4.4.3.2 Performance There ... non -fault- tolerant software) includes additional memory for the second through the nth variants, executive, and DM; additional execution time for the executive and the DM; and 128 Software Fault...

Ngày tải lên: 09/08/2014, 12:23

... [16] Anderson, T., and P A Lee, “Software Fault Tolerance, ” in Fault Tolerance: Principles and Practice, Englewood Cliffs, NJ: Prentice-Hall, 1981, pp 249–291 [17] Randell, B., Fault Tolerance and ... variants, executive, and DMs (ATs and voting type); additional execution time for the executive and the DMs; and synchronization overhead 170 Software Fault Tolerance Techniques and Implementation ... software fault tolerance techniques described The structure of the table and the entries for the RcB, NVP, and NSCP techniques were developed by Laprie and colleagues [19] Entries for the DRB, CRB, and...

Ngày tải lên: 09/08/2014, 12:23

... Software Fault Tolerance Techniques and Implementation The NCP technique uses a decision mechanism (DM) (see Section 7.1) and forward recovery (see Section 1.4.2) to accomplish fault tolerance ... Section 7.1) and both forward and backward recovery (see Sections 1.4.1 and 1.4.2) to accomplish fault tolerance The technique uses one or more DRA (see Sections 2.3.1 through 2.3.3) and at least ... software fault tolerance techniques depends on the performance of the re-expression algorithm used Several ways to perform data re-expression and insight on actual reexpression algorithms and their...

Ngày tải lên: 09/08/2014, 12:23

... Redundancy for the Detection and Tolerance of Software Faults,” Proceedings: Interface ’90, East Lansing, MI, 1990 [13] Anderson, T., and P A Lee, “Software Fault Tolerance, ” in Fault Tolerance: ... selfprotective and self-checking components, and is derived from an approach to fault tolerance in which system goals are made explicit It was evolved from the efforts of Taylor and Black [9] and Bastani and ... Other Software Fault Tolerance Techniques $! Table 6.3 Some of the Other Software Fault Tolerance Techniques Technique Name Description Algorithmic fault tolerance Algorithmic fault tolerance describes...

Ngày tải lên: 09/08/2014, 12:23

... t/(n − 1)-Diagnosability and Its Applications to Fault Tolerance, ” Proceedings: FTCS-21, Montreal, Canada, 1991, pp 496–503 [33] Xu, J., and B Randell, “Software Fault Tolerance: t/(n − 1)-Variant ... P -N., and J Blankenship, “Correspondent Computing for Software Implementation Fault Tolerance, ” Proceedings: Symposium on Applied Computing, 1990, pp 12–19 [31] Wu, J., “Software Fault Tolerance ... voting and 2-out-of-n is the lower bound [33] For m = 2, consensus voting is the same as majority voting Consensus voting and CRB-based systems were found [27] to perform better, and more uniformly,...

Ngày tải lên: 09/08/2014, 12:23

... background, and design and programming guidelines and techniques for software fault tolerance The next three chapters described design diverse, data diverse, and other software fault tolerance ... Software Fault- Tolerance, ” in J Zalewski and W Ehrenberger (eds.), Hardware and Software for Real Time Process Control, Elsevier Science Publishers B.V., NorthHolland, 1989 324 Software Fault Tolerance ... consensus voter and, 294 !!% detection, 225–26 dynamic majority voter and, 309 exact majority voter and, 277 fault tolerance techniques and, 223–24 median voter and, 282 SCOP and, 260 selection,...

Ngày tải lên: 09/08/2014, 12:23