1,721,685 research outputs found
Maximum risk reduction with a fixed budget in the railway industry
Get PDFDecision-makers in safety-critical industries such as the railways are frequently faced with the complexity of selecting technological, procedural and operational solutions to minimise staff, passengers and third parties’ safety risks. In reality, the options for maximising risk reduction are limited by time and budget constraints as well as performance objectives.
Maximising risk reduction is particularly necessary in the times of economic recession where critical services such as those on the UK rail network are not immune to budget cuts. This dilemma is further complicated by statutory frameworks stipulating ‘suitable and sufficient’ risk assessments and constraints such as ‘as low as reasonably practicable’. These significantly influence risk reduction option selection and influence their effective implementation.
This thesis provides extensive research in this area and highlights the limitations of widely applied
practices. These practices have limited significance on fundamental engineering principles and
become impracticable when a constraint such as a fixed budget is applied – this is the current reality
of UK rail network operations and risk management. This thesis identifies three main areas of weaknesses to achieving the desired objectives with current risk reduction methods as:
Inaccurate, and unclear problem definition;
Option evaluation and selection removed from implementation subsequently resulting in misrepresentation of risks and costs;
Use of concepts and methods that are not based on fundamental engineering principles, not
verifiable and with resultant sub-optimal solutions.
Although not solely intended for a single industrial sector, this thesis focuses on guiding the railway
risk decision-maker by providing clear categorisation of measures used on railways for risk reduction.
This thesis establishes a novel understanding of risk reduction measures’ application limitations and respective strengths. This is achieved by applying ‘key generic engineering principles’ to measures employed for risk reduction. A comprehensive study of their preventive and protective capability in different configurations is presented.
Subsequently, the fundamental understanding of risk reduction measures and their railway applications, the ‘cost-of-failure’ (CoF), ‘risk reduction readiness’ (RRR), ‘design-operationalprocedural-technical’ (DOPT) concepts are developed for rational and cost-effective risk reduction. These concepts are shown to be particularly relevant to cases where blind applications of economic and mathematical theories are misleading and detrimental to engineering risk management.
The case for successfully implementing this framework for maximum risk reduction within a fixed budget is further strengthened by applying, for the first time in railway risk reduction applications, the dynamic programming technique based on practical railway examples
WELI instructional guide
Get PDFFrench version available in IDRC Digital Library: Guide pedagogique de l'enquete sur l'indice d'autonomisation des femmes dans l'elevage (WELI)Bill and Melinda Gates FoundationGlobal Affairs Canada (GAC
Correction to: The relationship between armed conflict and reproductive, maternal, newborn and child health and nutrition status and services in northeastern Nigeria: a mixed-methods case study (Conflict and Health, (2020), 14, 1, (75), 10.1186/s13031-020-00318-5)
No full text© 2021, The Author(s). Following publication of the original article [1], the authors identified an error in the author name of Chinwenwo Weli The incorrect author name is: Chinwewo Weli The correct author name is: Chinwenwo Weli The author group has been updated above and the original article [1] has been corrected
Effects Of Wastewater Applıcatıon On Soıl Propertıes
Get PDFBu çalışmanın amacı atıksu uygulamasının kum-kil karışımlarının bazı geoteknik özellikleri üzerine etkilerini belirlemektir. Bu çalışmada kullanılan atıksu Gaziantep GASKI Fabrikasından (GGF) alinmistir. Standart kompaksiyon, Serbest Basınç Dayanımı (SBD), kivam limitleri ve geçirgenlik testleri kum-kil karışımlarına uygulandı. Kum taneleri killi zeminin icine kuru ağırlıkca %10, %20, %30, %50 ve %70 oranında ilave edildi. İlk olarak optimum su içeriği (OSI) ve en maksimum kuru yoğunluk (MKY) bulundu ve diğer deneyler bu değerler kullanılarak gerçekleştirilmiştir. Atıksu ile doyurulmuş kum-kil karışımları ile askıda katı madde (KM), biyolojik oksijen ihtiyacı (BOI), hidrojen gücü (HG) ve kimyasal oksijen ihtiyacı (KOI) deneyleri gerçekleştirildi. Elde edilen sonuçlara göre, kum oranı arttıkça, atıksuyun temizlenmesinin verimliliği azalmış ve atıksuyun geçirgenlik arttırıldı
Women empowerment in livestock index (WELI) baseline report - Kenya
Get PDFThe research/ survey addresses whether the Women Empowerment in Livestock Index (WELI) percentage of indicators differ significantly from baseline to post intervention. WELI is a standardized survey tool that measures empowerment of women in the livestock sector at the level of the household and along the vaccination value chain (VVC). The survey is constructed so as to better understand levels of agency, empowerment and decision-making capacity of women within households. The report analyzes scores and the meaning of measurement indicators. In Kenya, the study found no significant association between empowerment scores and being knowledgeable about animal health, or between access to information regarding the vaccines
Qualitative component of the Women’s Empowerment in Livestock Index (WELI)
Get PDFFrench version available in IDRC Digital Library: Le volet qualitatif de l’Indice d'autonomisation des femmes dans l'élevage (WELI)Bill and Melinda Gates FoundationGlobal Affairs Canada (GAC
Women empowerment in livestock index (WELI) baseline report - Uganda : key findings
No full textResults in Uganda in relation to indicators of ‘instrumental agency’ show that women achieve adequacy in more indicators compared to men. The research/ survey addresses whether Women Empowerment in Livestock Index (WELI) scores differ significantly from baseline to post intervention. WELI is a standardized survey tool to measure empowerment of women in the livestock sector at the level of the household and along the vaccination value chain (VVC). The survey is constructed so as to better understand levels of agency, empowerment and decision-making capacity of women within households
Guide pedagogique de l'enquete sur l'indice d'autonomisation des femmes dans l'elevage (WELI)
Get PDFEnglish version available in IDRC Digital Library: WELI instructional guideBill and Melinda Gates FoundationGlobal Affairs Canada (GAC
Le volet qualitatif de l’Indice d'autonomisation des femmes dans l'élevage (WELI)
Get PDFEnglish version available in IDRC Digital Library: Qualitative component of the Women’s empowerment in Livestock Index (WELI)Bill and Melinda Gates FoundationGlobal Affairs Canada (GAC
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