scholarly journals Safety Analysis and Simulation Validation of Hose Whipping Phenomenon in Air Refueling

2020 ◽  
Vol 10 (5) ◽  
pp. 601-608
Author(s):  
Lijie Cui ◽  
Jiping Cong ◽  
Haoran Chen ◽  
Bo Ren
Keyword(s):  
Preventive Measures ◽  
Process Analysis ◽  
Speed Control ◽  
Safety Analysis ◽  
Simulation Validation ◽  
Tension Change ◽  
Research Findings ◽  
Reel Mechanism ◽  
Hazardous State

This paper aims to identify the main cause of the hose whipping phenomenon (HWP) in air refueling, and come up with effective preventive measures. The system-theoretic accident model and process (STAMP), i.e., the system-theoretic process analysis (STPA), was adopted to evaluate the safety of air refueling. Then, the evaluation results were verified with a self-designed simulation validation model. The results show that the HWP is controlled by the docking speed, reel mechanism, and designed hose length; the swing range and tension change of the hose increased under inappropriate speed control; reel control could end the hazardous state of the hose within 50s after docking; the HWP occurred after the hose length was shortened from 22m to 14m. The research findings provide a reference for the prevention of the HWP.

Schistosomiasis in Children in the Philippines: Beyond Health Issues

2017 ◽  
Vol 12 (04) ◽  
pp. 238-248
Author(s):  
Mario Torres ◽  
Hazel Luyon-Tabo ◽  
Steven Salibay ◽  
Cristina Cabanacan-Salibay
Keyword(s):  
Preventive Measures ◽  
The Philippines ◽  
Health Issues ◽  
Major Health Problem ◽  
Major Health ◽  
Factors Associated ◽  
Research Findings ◽  
Effects On Children ◽  
Mode Of Transmission ◽  
The Government

AbstractThis article aims to discuss the issues about Schistosoma japonicum infection in the Philippines based on the research findings of previous studies. This includes reviews about the nature of schistosomiasis, with emphasis on its effects on children. The review also discusses the mode of transmission of the parasite, etiology, and epidemiology, and relates these factors to the persistence of S. japonicum as a major health problem in the Philippines. The efforts, preventive measures, and recommended actions of the government are also mentioned and have been taken into consideration in strengthening the eradication measures against S. japonicum. This review further analyzes the risk factors associated with the infected individuals. Some measures and practices that may contribute to the prevention of S. japonicum infection are highlighted.

scholarly journals A Novel Method for Safety Analysis of Cyber-Physical Systems—Application to a Ship Exhaust Gas Scrubber System

Safety ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 26 ◽  
Author(s):  
Victor Bolbot ◽  
Gerasimos Theotokatos ◽  
Evangelos Boulougouris ◽  
George Psarros ◽  
Rainer Hamann
Keyword(s):  
Failure Rate ◽  
Process Analysis ◽  
Fault Tree ◽  
Safety Analysis ◽  
Cyber Physical Systems ◽  
Open Loop ◽  
Exhaust Gas ◽  
Maritime Industry ◽  
Physical Systems ◽  
Novel Method

Cyber-Physical Systems (CPSs) represent a systems category developed and promoted in the maritime industry to automate functions and system operations. In this study, a novel Combinatorial Approach for Safety Analysis is presented, which addresses the traditional safety methods’ limitations by integrating System Theoretic Process Analysis (STPA), Events Sequence Identification (ETI) and Fault Tree Analysis (FTA). The developed method results in the development of a detailed Fault Tree that captures the effects of both the physical components/subsystems and the software functions’ failures. The quantitative step of the method employs the components’ failure rates to calculate the top event failure rate along with importance metrics for identifying the most critical components/functions. This method is implemented for an exhaust gas open loop scrubber system safety analysis to estimate its failure rate and identify critical failures considering the baseline system configuration as well as various alternatives with advanced functions for monitoring and diagnostics. The results demonstrate that configurations with SOx sensor continuous monitoring or scrubber unit failure diagnosis/prognosis lead to significantly lower failure rate. Based on the analysis results, the advantages/disadvantages of the novel method are also discussed. This study also provides insights for better safety analysis of the CPSs.

scholarly journals Choice of Food: A Preventive Measure during Covid-19 Outbreak

2020 ◽  
Vol 2 (1) ◽  
pp. 85-89
Author(s):  
Archana Bhatta
Keyword(s):  
Immune Response ◽  
Immune System ◽  
Severe Acute Respiratory Syndrome ◽  
Research Evidence ◽  
Preventive Measures ◽  
Preventive Measure ◽  
Personal Hygiene ◽  
Immune Functions ◽  
Key Factor ◽  
Research Findings

As the Covid-19 pandemic has affected communities around the globe, people are facing the fear of being infected by it. It is believed that Coronavirus disease 2019 is directly associated to an individual’s immune response, with no documented research evidence found yet. But, Covid-19 is genetically similar to Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV), therefore the same immune response is expected for Covid-191. It has also been found that individuals having weaker immune functions are more suspected to infect and have a high fatality rate2. Preventive measures such as good personal hygiene, wearing a mask, avoiding crowded places and sick individuals, practicing quarantine, and proper choice of food can help an individual to be safe from the risk of current COVID-19 infection. Research findings state that nutrition influences immune strength thereby protecting our body from the attack of pathogens3. Increasing intake of a nutritious diet can help to enhance the immune system and makes an individual less susceptible to diseases, which is also considered as a key factor for the prevention of viral infection like COVID-19. Therefore, the incorporation of foods rich in nutrients that boosts our immunity is one of the possible essential preventive measures to fight with this global crisis.

scholarly journals Teaching Money Literacy in a Positive Youth Development Program: The Project P.A.T.H.S. in Hong Kong

2011 ◽  
Vol 11 ◽  
pp. 2287-2298 ◽  
Author(s):  
Tak Yan Lee ◽  
Ben M. F. Law
Keyword(s):  
Hong Kong ◽  
Children And Adolescents ◽  
Youth Development ◽  
Positive Youth Development ◽  
Preventive Measures ◽  
Development Program ◽  
Preventive Measure ◽  
Financial Education ◽  
Youth Development Program ◽  
Research Findings

In view of the high impact of materialistic orientation among children and adolescents, financial educational programs are provided as preventive measures. Without a clear framework, it is impossible to evaluate these programs. The goals of this paper are threefold. Firstly, the phenomena related to adolescent materialistic orientation and its associated problems in Hong Kong are examined. Secondly, the concept of financial education as a preventive measure is reviewed. Both board and narrow definitions of money literacy are examined. A framework on money literacy for children and adolescents as a founding stone for financial education is proposed. The framework finds its support from a typology proposed by the authors and results from an integration of research findings on dimensions of the concepts of money and success. Finally, curriculum units for Grades 7 to 9 students in a positive youth development program (the Project P.A.T.H.S.) are developed using the framework.

scholarly journals Bloodstream infection catheter-related: a literature review

2011 ◽  
Vol 6 (1) ◽  
pp. 208
Author(s):  
Regiane Souza Tigulini ◽  
Daniela Bicudo Angelieri
Keyword(s):  
Bloodstream Infection ◽  
Health Care Quality ◽  
Preventive Measures ◽  
Process Analysis ◽  
Venous Catheter ◽  
Care Quality ◽  
Care Processes ◽  
Factores De Riesgo ◽  
And Control ◽  
The Impact

ABSTRACT Objective: to conduct a survey of the issues about primary bloodstream infection related to the central venous catheter (CR-BSI), published from 2000 to 2010. Method: literature search based on the databases Lilacs and Medline. Results: of the 47 articles researched, the highest number of publication occurred in 2007: 23.4% in 2010, 10.63% in 2009, 17% in 2008 and 14.9% in 2007. Brazil was the second country to publish the most number of researches in this matter (21.27%). In these publications, 48.93% evaluated the impact on the prevention of RC-BSI; 36.17%  discussed about the epidemiology, risk factors and mortality rate; and 14.9% dealt with the description of recommended preventive measures, diagnosis and/or treatment. It wasn’t found, among these issues, any work that effectively evaluated the indicators of care processes. Conclusion: based on the increasing interest in learning the process of this infection and the expressiveness of the Brazilian publications added to the recommendations of the Brazilian National Health Surveillance Agency (ANVISA) on the process analysis with the aim of the introduction of a more assertive program to reduce this infection, it is suggested the need of a ceaseless search for new knowledge to ease the problems of prevention and control of RC-BSI.  Descriptors: infection control; catheter-related infections; health care quality indicators.RESUMOObjetivo: realizar um levantamento das publicações produzidas no período de 2000 a 2010 acerca das infecções primárias de corrente sanguínea relacionadas ao cateter central. Método: pesquisa bibliográfica às bases de dados Lilacs e Medline. Resultados: dos 47 artigos encontrados, a maior produção deu-se a partir de 2007: 23,4% em 2010, 10,63% em 2009, 17% em 2008, 14,9% em 2007. O Brasil foi o segundo país a publicar maior número de trabalhos sobre o assunto (21,27%). 48,93% das publicações avaliaram o impacto de intervenções na prevenção das IPCS-RC, 36,17% discorreram sobre a epidemiologia, fatores de risco e mortalidade e 14,9% enfocaram a descrição de recomendações de medidas preventivas, diagnóstico e/ou tratamento. Dentre a seleção não foram encontrados trabalhos avaliando efetivamente indicadores de processos assistenciais. Conclusão: o crescente aumento no interesse em conhecer o processo destas infecções, diante da expressividade de publicações brasileiras somada às recomendações da ANVISA sobre análise de processos, objetivando implantar programas de redução de infecção mais assertivos, aponta a necessidade em manter a busca constante por novos conhecimentos impactantes no problema do controle e prevenção das IPCS-RC. Descritores: controle de infecções; infecções relacionadas a cateter; indicadores de qualidade em assistência à saúde.RESUMENObjetivo: realizar una evaluación sobre las publicaciones de las infecciones primarias a cabo en el torrente sanguíneo relacionadas con el catéter central. Estas publicaciones son del periodo 2000 a 2010. Método: este documento se basa en los datos de LILACS y MEDLINE. Resultados: de cuarenta y siete (47) artículos de investigación, la mayoría de la producción de las infecciones ocurrió por primera vez en 2007: 23,4% en 2010, 10,63% en 2009, el 17% en 2008 y 14,9% en 2007. Brasil fue el segundo país de publicar el mayor número de investigaciones en esta materia (21,27%). En estas publicaciones, 48,93% estimó que el impacto en la prevención de IPCS-RC, 36,17% calificó la epidemia y sus tratamientos, los factores de riesgo y la mortalidad, y un 14,9% frente a la descripción de las recomendaciones de los métodos preventivos de diagnóstico y / o tratamientos. No se encontró, en esta selección, los trabajos efectivamente evaluar el indicador de proceso del asistente. Conclusión: el aumento del interés de conocer el proceso de estas infecciones, las publicaciones brasileñas y con las recomendaciones de la ANVISA sobre el proceso de análisis para el objetivo de la creación de programas en la reducción de estas infecciones muestra la necesidad de continuar la búsqueda de nuevos conocimientos en problemas de prevención y control de IPCS-RC. Descriptores: control de las infecciones; las infecciones relacionadas con cateter; los indicadores de calidad en la asistencia sanitaria.

Improved Systemic Hazard Analysis Integrating with Systems Engineering Approach for Vehicle Autonomous Emergency Braking System

2021 ◽  
Author(s):  
Jianyu Duan
Keyword(s):  
System Design ◽  
Systems Theory ◽  
Systems Engineering ◽  
System Development ◽  
Process Analysis ◽  
Hazard Analysis ◽  
Safety Analysis ◽  
Critical System ◽  
Emergency Braking ◽  
Braking System

Abstract Safety analysis is a significant step for the safety-critical system development. Compared with traditional vehicles, the system interactions for autonomous vehicles are more abundant and complex. Traditional hazard analysis methods, such as Failure Mode and Effects Analysis (FMEA) and Fault Tree Analysis (FTA) which are on the basis of the component failure and reliability theory, can not identify the system hazards related to system interactions. An emerging hazard analysis method based on systems theory, Systems Theory Process Analysis (STPA) mainly focuses on identifying the control system hazards caused by system interactions. In this study, STPA method is used to identify the potential hazards and casual factors for autonomous emergency braking system by concentrating on system interactions. To improve the consistency between system design and safety analysis, the workflow combining model-based systems engineering (MBSE) and STPA is proposed. The systems modeling language (SysML) is used to describe control structure and system interaction relationships. According to the identified casual factors, the certain constraints and requirements can be derived, which can provide the guidance for system development with respect to system design. Furthermore, the quantitative analysis of the certain unsafe control action is conducted by simulation, which shows effectiveness and feasibility of the proposed method in safety analysis and system design.

Study on Formative Mechanism and Preventive Measures of Rammed Earth Wall Cracks

2011 ◽  
Vol 368-373 ◽  
pp. 2630-2633
Author(s):  
Yin Zhang ◽  
Xin Gao ◽  
De Jun Zhao
Keyword(s):  
Energy Saving ◽  
Preventive Measures ◽  
Rammed Earth ◽  
North Central ◽  
Rammed Earth Wall ◽  
Research Findings ◽  
Earth Walls

Rammed earth is a construction form featuring energy saving and economical. However, affected by many factors, the existing rammed earth buildings, in the course of usage, would emerge various forms of cracks. Based on the research findings on rammed earth buildings in northwest, north, central and southwest regions of China, crack forms of rammed earth walls and the formative mechanism were analyzed, in turn corresponding preventive measures were proposed in this article.

scholarly journals Research methodology for determining the economic efficiency of using low-intensity irrigation systems in mountain farming in Azerbaijan

2018 ◽  
Vol 5 ◽  
pp. 369-378
Author(s):  
Prof. RANS ALIYEV Z. H
Keyword(s):  
Sugar Beet ◽  
Economic Efficiency ◽  
Surface Soil ◽  
Preventive Measures ◽  
Cost Effective ◽  
Mountainous Terrain ◽  
Irrigation Systems ◽  
Low Intensity ◽  
Research Findings ◽  
Erosion Characteristic

For a well-known purpose in 2010-2015, Guba-Khachmaz RAEM, Tartar and RAEM Shamakhi TSB have been confirmed by numerous research findings in the field of mountain watering, in terms of the development of irrigation, the mountainous slopes include soybean, sugar beet, trees, and germination (barley, wheat, etc.), the microcirculation method was not cost-effective in terms of efficiency, and preventive measures such as surface soil wash, sliding, irrigation and drowning, erosion characteristic for mountainous terrain zones , which is of particular importance, confirms the feasibility study of the farm calculated with the following formula.

scholarly journals Operational Process for R&D Laboratory Safety

SAGE Open ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 215824402098885
Author(s):  
Donghun Yoon
Keyword(s):  
Preventive Measures ◽  
Safety Management ◽  
Process Analysis ◽  
Optimal Operation ◽  
Laboratory Safety ◽  
Analytic Hierarchy ◽  
Factors Affecting ◽  
Research Activities ◽  
Hierarchy Process ◽  
Priority Levels

Large and small safety accidents caused by experiments frequently occur in laboratories, and preventive measures are very important to prevent human, physical, and research and development (R&D) losses. It is very important to maximize R&D performance and to produce excellent R&D results through the efficient and optimal operation of laboratories, which can be done through R&D laboratory safety management activities. Research managers worldwide are obliged to engage in research activities with equal emphasis on good R&D performance and R&D laboratory safety management activities. In this article, the strategic R&D laboratory safety management status in South Korea was studied. Toward this end, an analytic hierarchy process analysis was conducted, and the degrees of importance and priority levels of the established factors affecting laboratory safety management, and their subfactors were analyzed based on a 5-point scale. Finally, a strategic management system for R&D laboratory safety was proposed.

Sign in / Sign up

Export Citation Format

Share Document