... Using MCP6491 Op Amps for Photodetection Applications Author: Yang Zhen Microchip Technology Inc INTRODUCTION Low input bias operational amplifiers (op amps) are often required for a wide range ... MCP6491 LOW INPUT BIAS CURRENT OP AMPS Microchip’s MCP6491 family of op amps has low input bias current (150 pA, typical at 125°C) and rail-to-rail input and output operation The MCP6491 family ... Input Bias Current Op Amps [2] • MCP6471: MHz, Low Input Bias Current Op Amps [3] DS01494A-page AN1494 PHOTODETECTION APPLICATIONS There are many detectors which can be used for photodetection
Ngày tải lên: 11/01/2016, 16:58
... the third edition of Strategic Planning for InformationSystemsby John Ward and Joe Peppard is an excellent example Previouseditions have been highly successful, and we believe the third edition ... AMTeam-Fly® Trang 2Strategic Planning for Information SystemsThird Edition JOHN WARD and JOE PEPPARD Cranfield School of Management,Cranfield, Bedfordshire, UK Trang 3Copyright # 2002 by John Wiley & ... 455 10 Strategies for Information Management: Towards Knowledge Information as an Asset: The Senior Management Agenda 467 An Information Culture 470 Implementing Business-wide Information Management
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 2 doc
... just for its success but for its very survival—planning for information systems has become strategic for many com-panies That does not mean that previously-developed, good IS/ITstrategy formulation ... Economic Community had existed for 30 yearsbefore 1992, the Maastricht Treaty forming the European Union was one of the most significant changes to take place in Europe for many years,with the dismantling ... condition.Operational effectiveness means performing similar activities better thanrivals perform them In contrast, strategic positioning means performingdifferent activities from rivals’ or performing
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 3 ppsx
... relevant to high degrees of diffusion, the former being mostappropriate for creating new opportunities and the latter for providingthe eclectic type of planning for the ‘complex’ part of the matrix ... An extended, prioritized con-‘shopping list’ of key operational type applications for both tional and management information requirements will generallyresult opera- Stage 3—the next stage is ... requirements for theeffective formulation of IS/IT strategy revolve around people Undoubt-edly, it is essential for knowledgeable, experienced, highly skilled andwell-motivated staff to be involved and for
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 4 ppsx
... Understanding the Current Situation 183 Develop options for radical change Evaluation of options Implementation of chosen options Identify need for change in development of business strategy Figure 4.1 ... problem areas; A basis for conceptually defining activities and for designing andillustrating improvement opportunities A basis for indicating the scope of application areas and for definingthe future ... ScorecardThe Balanced Scorecard has become a popular tool for managing theperformance of organizations and, laterally, for the development ofstrategy itself Developed by Harvard Business School academicsKaplan
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 5 potx
... e-commerce for its business in terms of opportunities and threats, the information flowing through the industry—the external value chain—needs to be analysed before the information processes can be optimized ... advantage is likely to be offset by poor performance elsewhere. For example, a bank that had developed a new and excellent mortgage product for younger people (as defined by independent benchmarks) ... the main basis for such information sharing across various companies’ information systems In the... drug during development can take many years, and reducing the development time from,
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 6 doc
... achieve performancetargets, which is appropriate for key operational projects andimplies similar levels of prescription as monopoly; a combination of Simon’s interactive control, which is appropriatewhen ... frameworks which guide the opportunitiesfor IT which are identified, the IT resources which are developed, the rate at which new technologies are adopted, the level of impact for IT withinthe firm, ... operational problem or failureoccurred due to incorrect or out-of-date information content Onlythen was the key role that the ‘informal’ information system was nowfulfilling realized and appropriate
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 7 pot
... differentiatebetween formal and informal organizational arrangements Theformal organization structure reflects the way in which the businessoperates, whereas the ‘dominant coalition’ or informal structureessentially ... effectively, a structure for a steering organization forIS/IT strategy is proposed in Figure 8.8 It reflects the need forcontinuity, overlap even, and feedback between developing andimplementing ... thecentral IS Group via Computing Operations Revenue Appor-tionment (CORA) and information systems development TheSSCB is complemented by the Service Development Forum,which should identify the
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 8 pps
... research, a format for presenting business caseswas developed that has proved to be more appropriate than manyothers—based on its adoption in many organizations Figure 9.12outlines the basic format ... essence, therefore, any major IS/IT developmentwill consist of the mix of activities for which best practices and relevantmethodologies have been developed over the last 30 years Systems development ... rationalization M H M L 7 Technology cost performance enables lower costs for existing systems if redeveloped L L H H Trang 4 appropriate resourcing levels for the future can be set, and actiontaken
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 9 ppsx
... misuse and lost opportunity; proper authorised use; optimum use for stakeholder benefit.’ T.H Davenport, Information Ecology: Mastering the Information and Knowledge Environments, Oxford University ... contains corporate infor- mation management as well as information management at SBU level. This would be repeated for each SBU. Authority and Responsibility for Information Criteria for determining ... ‘ready for use’ or for further local manipulation; —tools and access to an information ‘warehouse’ of information extracted from operational files; —tools in the local PC, workstation or desktop environment
Ngày tải lên: 14/08/2014, 05:21
Strategic Planning for Information Systems Third Edition phần 10 potx
... organizationsand between people—has made providing, accessing and exchanginginformation easier or cheaper than ever before, opening up newoptions for every organization and creating opportunities for com-pletely ... on theperformance achieved by the customer These performance-based con-tracts (as opposed to fee-based) are proving popular, particularly asexperience with outsourcing has been mixed For example, ... Oxford University Press, Oxford, 1997, pp 326–360. out-51 M.C Lacity and R Hirschheim, ‘Information systems outsourcing bandwagon’, Sloan Management Review, Fall, 1993, 73–86. 52 For an informed
Ngày tải lên: 14/08/2014, 05:21
Statistical Methods for Survival Data Analysis Third Edition phần 1 pot
... distribution fitting.Once an appropriate statistical model for survival time has been constructedand its parameters estimated, its information can help predict survival, developoptimal treatment regimens, ... behavioral sciences The third edition of Statisti-cal Methods for Survival Data Analysis is intended to provide a comprehensive introduction of the most commonly used methods for analyzing survival ... cannot wait for the death of all the animals One option is toobserve for a fixed period of time, say six months, after which the survivinganimals are sacrificed Survival times recorded for the animals
Ngày tải lên: 14/08/2014, 09:22
Statistical Methods for Survival Data Analysis Third Edition phần 2 potx
... retinopathy Table 3.11 gives some summary statistics of the eight continuous variables for patients who have developed retinopathy and forthose who have not Notice that patients who have developed ... the proportion of patients in the population surviving for two years or more, that is, S(2). The first group of patients in this example is followed for two years; thesecond group is followed for ... the contingency table analysis of retinopathyincidence rates The number of patients at risk of developing retinopathy andthe number of patients who developed the disease (and rate) are given bysubcategory
Ngày tải lên: 14/08/2014, 09:22
Statistical Methods for Survival Data Analysis Third Edition phần 3 doc
... there is a large proportion of older people in Sunny City. A crude death rate of a population may be relatively high merely because the population has a high proportion of older people; it may be ... the specific rates of the different groups for the population under study. Let p , , p I be the proportions of people in the k groups for the standard population. The direct standardized rate ... persons in the population, can safely be used for comparison. The level of the crude rate is affected by demographic characteristics of the population for which the rate is computed. If populations
Ngày tải lên: 14/08/2014, 09:22
Statistical Methods for Survival Data Analysis Third Edition phần 5 pot
... distribution belongs, is not appropriate for theobserved data It is possible that a distribution with different b in the familymay be appropriate distribu-9.2 TESTS FOR APPROPRIATENESS OF A FAMILY OF ... be a straight line with unit slope and zero intercept if the fitted survival distribution is appropriate, regardless of the form of the distribution The procedure for using Cox—Snell residuals ... F(tG), for example, (i90.5)/n, for i : 1, , n. The shape parameter is estimated graphicallyas the reciprocal of the slope of the straight line fitted to the graph If the fitted line is appropriate,
Ngày tải lên: 14/08/2014, 09:22
Statistical Methods for Survival Data Analysis Third Edition phần 6 ppsx
... independent variables is missing. When a substantial propor- tion of subjects has missing data for a variable, we may simply opt to drop them and perform the analysis on the remainder of the sample. ... surviving a given time G for rats fed with any of the diets For example, for rats fed a low-fat diet, 273 Table 11.3 Analysis Results for Rat Data in Table ... dependent variable or for the independent variables, is missing. This problem is obviously less critical if 1% of data for one independent variable is missing than if 40% of data for several independent
Ngày tải lên: 14/08/2014, 09:22
Statistical Methods for Survival Data Analysis Third Edition phần 7 docx
... (7.1.8). For a continuous variable, exp(b G ) represents the increase in risk corresponding to a 1-unit increase in the variable. For example, for BMI, exp (0.0255) : 1.026; that is, for every ... statistics are for testing the null hypothesis that the covariate is not related to the risk of CVD or H : b G : 0, i : 1, , 6, respect- ively. For example, the Wald statistic equals 10.7457 for gender ... and b : 0.7187. It indicates that after adjusting for all the variables in the model (12.2.1), gender is a significant predictor for the development of CVD, with men having a higher risk than
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Statistical Methods for Survival Data Analysis Third Edition phần 10 pot
... Biometrika. 475 Trang 4Table B-11 (P, S) and (P, S) for Various Values of n/r: n/r : 1.0For P 0.52 read S from the left-hand margin, and for P 0.56 read S from the right-hand margin Note ... Conservatively for Clinically Localized Prostate Cancer Journal of the American Medical Association, 280(11), 9 75—980 Trang 17Alioum, A., and Commenges, D.(1996) A Proportional Hazards Model for ArbitrarilyCensored ... Blumehscein, G R., Hortobagiji, G H., Tashima, C Postoperative Chemoimmunotherapy for Patients with Stage II and Stage III Breast Cancer Cancer, 41, 1064—1075. Information Presented at the 1974 Annual Meeting
Ngày tải lên: 14/08/2014, 09:22
mancini, r. (2002). op amps for everyone
... sad day for real-time measurements), but the demand for op amps increased as measurement applications increased. 17 Development of the Ideal Op Amp Equations Ron Mancini 3.1 Ideal Op Amp Assumptions The ... their performance and reliability has improved to the point where present day op amps can be used for analog applications by anybody. The IC op amp is here to stay; the latest generation op amps ... have come to know and love them. The op amp used an amplifier with a large open loop gain, and when the loop was closed, the amplifier performed the mathematical operations dictated by the external...
Ngày tải lên: 18/04/2014, 12:29