Critical systems development
Critical systems development
... Slide 1Critical systems development Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 20 Slide 2Objectives To explain how fault tolerance and faultavoidance contribute to the development ... Chapter 20 Slide 7Diversity and redundancy examples Redundancy. Where availability is critical( e.g. in e-commerce systems) , companiesnormally keep backup servers and switch tothese automatically if ... Sommerville 2004 Software Engineering, 7th edition. Chapter 20 Slide 28Fault tolerance In critical situations, software systems must befault tolerant. Fault tolerance is required where there are highavailability...
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Critical Systems Specification
... identification Identify the risks faced by the critical system. In safety -critical systems, the risks are the hazardsthat can lead to accidents. In security -critical systems, the risks are thepotential ... 9 Slide 5Risk-driven specification Critical systems specification should be risk-driven. This approach has been widely used insafety and security -critical systems. The aim of the specification ... standard for safetymanagement that was specifically designedfor protection systems - it is not applicable toall safety -critical systems. Incorporates a model of the safety life cycleand covers all...
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Critical Systems
... Primary safety -critical systems Embedded software systems whose failure can cause theassociated hardware to fail and directly threaten people. Secondary safety -critical systems Systems whose ... in other systemswhich can threaten people Discussion here focuses on primary safety-criticalsystems• Secondary safety -critical systems can only be consideredon a one-off basisSafety criticality©Ian ... Software Engineering, 7th edition. Chapter 3 Slide 7Development methods for critical systems The costs of critical system failure are sohigh that development methods may be usedthat are not cost-effective...
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Critical Systems Validation
... Slide 4Validation of critical systems The verification and validation costs for criticalsystems involves additional validation processesand analysis than for non -critical systems: • The costs ... validation costs for critical systems areusually significantly higher than for non -critical systems. Normally, V & V costs take up more than50% of the total system development costs.©Ian ... of the team involved in safety-related systems development and validation.Process QA Records of the quality assurance processes carried out during systemdevelopment.ChangemanagementprocessesRecords...
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Báo cáo y học: "A prospective observational study of the relationship of critical illness associated hyperglycaemia in medical ICU patients and subsequent development of type 2 diabetes"
... observational study of the relationship of critical illness associated hyperglycaemia in medical ICU patients and subsequent development of type 2 diabetes Critical Care 2010, 14:R130 ... Gašparović1AbstractIntroduction: Critical illness is commonly complicated by hyperglycaemia caused by mediators of stress and inflammation. Severity of disease is the main risk factor for development of hyperglycaemia, ... normoglycaemia during critical illness.0 2 4 6 8 10 1240200Normoglycaemia groupHyperglycaemia groupLogrank P<0.001 Years of follow-upCumulative incidenceof type 2 diabets (%)Gornik et al. Critical Care...
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STUDIES ON CATTLE MILK AND MEAT PRODUCTION IN FOGERA WOREDA: PRODUCTION SYSTEMS, CONSTRAINTS AND OPPORTUNITIES FOR DEVELOPMENT doc
... classification of the East Africa Zebu cattle 6 2.3. Cattle Production Systems in Sub-Saharan Africa 10 xi 2.3.1. Traditional production systems 10 2.3.2. Improved production system 12 2.4. Economic ... milk production 26 2.6.4. Intensive Dairy Farming 27 2.7. Cattle fattening systems in Ethiopia 27 2.7.1. Traditional systems 27 2.7.2. By-product-Based fattening 28 2.7.3. The Hararghe fattening ... STUDIES ON CATTLE MILK AND MEAT PRODUCTION IN FOGERA WOREDA: PRODUCTION SYSTEMS, CONSTRAINTS AND OPPORTUNITIES FOR DEVELOPMENT M.Sc.THESIS BELETE ANTENEH TARIKU ...
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Managing Linux Systems with Webmin: System Administration and Module Development docx
... mounting other filesystems. The scripts have a fixed order inwhich they must execute because some of the later scripts are dependant on earlier ones. Forexample, network filesystems cannot be ... with Windows systems by configuring SambaThese are just a few of the available functions. Webmin lets you configure almost all of the com-mon services and popular servers on UNIX systems using ... almost identi-cally on other operating systems. Each chapter also lists any differences between Linux and otherUNIX variants in their “Other Operating Systems sections. This means that it is...
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Báo cáo " The development of financial systems of ASEAN-5 and Vietnam: A comparative analysis " potx
... Abstract. This paper looks at the development of the financial systems of ASEAN-5 countries and Vietnam. By making a comparison between factors that foster the financial development of ASEAN-5 and ... economics fundamentals and financial sector development (1). ______ (1) Financial development can be defined in several ways. In fact, financial systems can develop in terms of size but also ... Presently, room for financial development remains very large. Like ASEAN-5, Vietnam is still largely bank-based, and the capital markets are only at an early stage of development. The ASEAN-5 experience...
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Regional Food Hub Resource Guide: Food hub impacts on regional food systems, and the resources available to support their growth and development pdf
... most frequently asked questions about the food hub concept and its role in regional food systems development. What Is a Regional Food Hub?With the growing interest in regional food hubs, ... There are three primary reasons why this lack of infrastructure sties the development of regionally based food systems: Limited Market Options and Revenue OpportunitiesAlthough many smaller ... classied as food hubs, they can still play a vital role in supporting the development of robust regional food systems. Many wholesale market sites already have distribution infrastructure...
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