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Research about Online Security Warning and Risk Assessment of Power Grid Based on Energy Management System
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作者 Hanyun Wang Kangyuan Wang +2 位作者 Yunxiao Zhang Guoqiang Mei Mingming Wu 《Journal of Energy and Power Engineering》 2012年第3期485-487,共3页
In this paper, online security warning and risk assessment of power grid are proposed, based on data from EMS (Energy Management System), combined with information of real-time operation state, component status and ... In this paper, online security warning and risk assessment of power grid are proposed, based on data from EMS (Energy Management System), combined with information of real-time operation state, component status and external operating environment. It combines the two factors, contingency likelihood and severity, that determine system reliability, into risk indices on different loads and operation modes, which provide precise evaluation of the power grid's security performance. According to these indices, it can know the vulnerable area of the system and whether the normal operating mode or repair mode is over-limited or not, and provide decision-making support for dispatchers. Common cause outages and equipment-aging are considered in terms of the establishment of outage model. Multiple risk indices are defined in order to reflect the risk level of the power grid more comprehensively. 展开更多
关键词 EMS (energy management system online security warning risk assessment.
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Risk Assessment,Management and Application in Nuclear Power Plant Operation
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作者 圣国龙 邱艳荣 李琼哲 《Journal of Donghua University(English Edition)》 EI CAS 2014年第6期895-898,共4页
To introduce the basic concepts of technical specification of nuclear power plant,a risk assessment and management technique based on the probabilistic safety analysis( PSA) method was proposed. The risk-informed meth... To introduce the basic concepts of technical specification of nuclear power plant,a risk assessment and management technique based on the probabilistic safety analysis( PSA) method was proposed. The risk-informed method was used,and an example was given to show how to use some specific risk metrics like CDF / LERF /ICDP / ILERP to analyze and manage the risk associated with activities in nuclear power plant operation. The advantage of this technique can be concluded from this paper,and this technique should be used more widely and deeply in nuclear industry. 展开更多
关键词 technical specification probabilistic safety analysis(PSA) risk assessment risk management
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Risk Assessment and Management of Hazardous Hydrological and Geological Processes in Ukraine
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作者 H. Rudko I. Sumatokhina 《Journal of Agricultural Science and Technology(B)》 2011年第2期232-240,共9页
Due to long and irrational land-utilization, Ukraine deals with one of the most strained ecological situations in Europe. This work is devoted to the study of land resources transformation that was caused by human act... Due to long and irrational land-utilization, Ukraine deals with one of the most strained ecological situations in Europe. This work is devoted to the study of land resources transformation that was caused by human activity. The subject of study is to assess and forecast physical land and soil degradation, associated with the technical intensification of hazardous exogenous processes. The research is based on the use of methods of ecologic-geomorphological analysis, mathematical-statistical modeling and forecasting. This project gives characteristics to the main anthropogenic factors of threats and risks to land and soil, which take place in the territory of Ukraine. The estimation was conducted relatively dangerous hydrological and geological processes that are key factors of physical degradation of resources. These processes include erosion, flooding, secondary waterlogging, landslides and other collapsed phenomena. Graphic models reflect specific factors and environmental consequences of the most dangerous exogenous processes. Predicted is the development of dangerous hydrological and geological processes, influenced by technogenic factors. Different scenarios of physical land degradation are developed by the example of a specific technonatural geosystem. A measurement system of the sustainable usage and management of soil condition in Ukraine is improved. 展开更多
关键词 Threats and risks to land and soil physical degradation of soil hydrogeological and geological processes risk assessment risk management.
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On the Application of IPRA Tool in Risk Assessment and Management of International Construction Projects
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作者 Shadab Alipour Tadeh Zirakian David Boyajian 《Journal of Civil Engineering and Architecture》 2017年第2期135-140,共6页
Construction companies face threats from competition and must be able to adjust to modem technology and changes in customer expectations. These issues require efficient risk management techniques. The success of const... Construction companies face threats from competition and must be able to adjust to modem technology and changes in customer expectations. These issues require efficient risk management techniques. The success of construction companies running projects in international markets depends on how the risks arise from the host country conditions as well as the project specific risk factors. Successful management of risks requires identification of risks, construction of a risk model which can be used to assess the magnitude of risks, and implementation of response strategies so that an acceptable risk-return balance can be achieved. The project success usually depends on the combination of all risks, response strategies used to mitigate risks, and a company's ability to manage them. There exists a need to develop risk models containing the risks of doing business in international markets and factors that affect manageability of these risks. One of the market's critical challenges is scheduled management and the understanding and application of program management. This paper uses systematic risk identification, classification and analysis, and measurement and response methodologies to help international contractors quantify the risks of project development and accomplishment. 展开更多
关键词 International construction projects IPRA tool fuzzy risk assessment risk identification risk management.
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Fuzzy Risk Assessment Method for Airborne Network Security Based on AHP-TOPSIS
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作者 Kenian Wang YuanHong Chunxiao Li 《Computers, Materials & Continua》 SCIE EI 2024年第7期1123-1142,共20页
With the exponential increase in information security risks,ensuring the safety of aircraft heavily relies on the accurate performance of risk assessment.However,experts possess a limited understanding of fundamental ... With the exponential increase in information security risks,ensuring the safety of aircraft heavily relies on the accurate performance of risk assessment.However,experts possess a limited understanding of fundamental security elements,such as assets,threats,and vulnerabilities,due to the confidentiality of airborne networks,resulting in cognitive uncertainty.Therefore,the Pythagorean fuzzy Analytic Hierarchy Process(AHP)Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)is proposed to address the expert cognitive uncertainty during information security risk assessment for airborne networks.First,Pythagorean fuzzy AHP is employed to construct an index system and quantify the pairwise comparison matrix for determining the index weights,which is used to solve the expert cognitive uncertainty in the process of evaluating the index system weight of airborne networks.Second,Pythagorean fuzzy the TOPSIS to an Ideal Solution is utilized to assess the risk prioritization of airborne networks using the Pythagorean fuzzy weighted distance measure,which is used to address the cognitive uncertainty in the evaluation process of various indicators in airborne network threat scenarios.Finally,a comparative analysis was conducted.The proposed method demonstrated the highest Kendall coordination coefficient of 0.952.This finding indicates superior consistency and confirms the efficacy of the method in addressing expert cognition during information security risk assessment for airborne networks. 展开更多
关键词 Airborne networks information security risk assessment cognitive uncertainty Pythagorean fuzzy sets
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AssessITS: Integrating Procedural Guidelines and Practical Evaluation Metrics for Organizational IT and Cybersecurity Risk Assessment
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作者 Mir Mehedi Rahman Naresh Kshetri +1 位作者 Sayed Abu Sayeed Md Masud Rana 《Journal of Information Security》 2024年第4期564-588,共25页
In today’s digitally driven landscape, robust Information Technology (IT) risk assessment practices are essential for safeguarding systems, digital communication, and data. This paper introduces “AssessITS,” an act... In today’s digitally driven landscape, robust Information Technology (IT) risk assessment practices are essential for safeguarding systems, digital communication, and data. This paper introduces “AssessITS,” an actionable method designed to provide organizations with comprehensive guidelines for conducting IT and cybersecurity risk assessments. Drawing extensively from NIST 800-30 Rev 1, COBIT 5, and ISO 31000, “AssessITS” bridges the gap between high-level theoretical standards and practical implementation challenges. The paper outlines a step-by-step methodology that organizations can simply adopt to systematically identify, analyze, and mitigate IT risks. By simplifying complex principles into actionable procedures, this framework equips practitioners with the tools needed to perform risk assessments independently, without too much reliance on external vendors. The guidelines are developed to be straightforward, integrating practical evaluation metrics that allow for the precise quantification of asset values, threat levels, vulnerabilities, and impacts on confidentiality, integrity, and availability. This approach ensures that the risk assessment process is not only comprehensive but also accessible, enabling decision-makers to implement effective risk mitigation strategies customized to their unique operational contexts. “AssessITS” aims to enable organizations to enhance their IT security strength through practical, actionable guidance based on internationally recognized standards. 展开更多
关键词 CYBERSECURITY information Security risk assessment risk Evaluation risk Mitigation Threat Level Vulnerability assessment
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An Information System for Risk-Vulnerability Assessment to Flood
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作者 Subhankar Karmakar Slobodan P. Simonovic +1 位作者 Angela Peck Jordan Black 《Journal of Geographic Information System》 2010年第3期129-146,共18页
An exhaustive knowledge of flood risk in different spatial locations is essential for developing an effective flood mitigation strategy for a watershed. In the present study, a riskvulnerability analysis to flood is p... An exhaustive knowledge of flood risk in different spatial locations is essential for developing an effective flood mitigation strategy for a watershed. In the present study, a riskvulnerability analysis to flood is performed. Four components of vulnerability to flood: 1) physical, 2) economic, 3) infrastructure and 4) social;are evaluated individually using a Geographic Information System (GIS) environment. The proposed methodology estimates the impact on infrastructure vulnerability due to inundation of critical facilities, emer gency service stations and bridges. The components of vulnerability are combined to determine an overall vulnerability to flood. The exposures of land use/land cover and soil type (permeability) to flood are also considered to include their effects on severity of flood. The values of probability of occurrence of flood, vulnerability to flood, and exposures of land use and soil type to flood are used to finally compute flood risk at different locations in a watershed. The proposed methodology is implemented for six major damage centers in the Upper Thames River watershed, located in the SouthWestern Ontario, Canada to assess the flood risk. An information system is developed for systematic presentation of the flood risk, probability of occurrence of flood, vulnerability to flood, and exposures of land use and soil type to flood by postal code regions or Forward Sortation Areas (FSAs). The flood information system is designed to provide support for different users, i.e., general public, decisionmakers and water management professionals. An interactive analysis tool is developed within the information system to assist in evaluation of the flood risk in response to a change in land use pattern. 展开更多
关键词 FLOOD management FLOOD risk GEOGRAPHIC information system risk management Vulnerability Analysis information system
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GIS-Based Risk Assessment of Debris Flow Disasters in the Upper Reach of Yangtze River 被引量:9
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作者 HAN Yongshun LIU Hongjiang +2 位作者 ZHONG Dunlun SU Fenghuan LI Chaokui 《Wuhan University Journal of Natural Sciences》 CAS 2007年第4期657-662,共6页
This paper discussed theory and methodologies of debris-flow risk assessment and established an implementation process according to indicators of debris-flow hazard degree, vulnerability, risk degree, etc. Among these... This paper discussed theory and methodologies of debris-flow risk assessment and established an implementation process according to indicators of debris-flow hazard degree, vulnerability, risk degree, etc. Among these methodologies, historical and potential hazard degree was comprehensively considered into hazard assessment and hazard index was presented to indicate the debris-flow hazard degree. Regarding debris-flow vulnerability assessment, its statistical data and calculating procedure were based on the hazard-degree regionalization instead of administrative divisions, which improved the assessing scientificity and precision. These quantitative methodologies integrated with Geography Information System (GIS) were applied to the risk assessment of debris flows in the upper reach of Yangtze River. Its results were in substantial agreement on investigation data and the actual distribution of debris flows, which showed that these principles and methodologies were reasonable and feasible and can provide basis or reference for debris-flow risk assessment and disaster management. 展开更多
关键词 debris flow risk assessment principles and methodologies geography information system upper reach of Yangtze River
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Research on Assessment Model of Information System Security Based on Various Security Factors 被引量:5
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作者 林梦泉 朱赟 +1 位作者 王强民 李建华 《Journal of Shanghai Jiaotong university(Science)》 EI 2007年第3期405-409,共5页
With the rapid development of network technology, the meaning of layers and attributes in respect of information system security must be extended based on the understanding of the concept of information system securit... With the rapid development of network technology, the meaning of layers and attributes in respect of information system security must be extended based on the understanding of the concept of information system security. The layering model (LM) of information system security and the five-attribute model (FAM) based on security factors were put forward to perfect the description and modeling of the information system security framework. An effective framework system of risk calculation and assessment was proposed, which is based on FAM. 展开更多
关键词 information system security factors five-attribute model(FAM) risk assessment
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Modeling data quality for risk assessment of GIS 被引量:1
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作者 Su, Ying Jin, Zhanming Peng, Jie 《Journal of Southeast University(English Edition)》 EI CAS 2008年第S1期37-42,共6页
This paper presents a methodology to determine three data quality (DQ) risk characteristics: accuracy, comprehensiveness and nonmembership. The methodology provides a set of quantitative models to confirm the informat... This paper presents a methodology to determine three data quality (DQ) risk characteristics: accuracy, comprehensiveness and nonmembership. The methodology provides a set of quantitative models to confirm the information quality risks for the database of the geographical information system (GIS). Four quantitative measures are introduced to examine how the quality risks of source information affect the quality of information outputs produced using the relational algebra operations Selection, Projection, and Cubic Product. It can be used to determine how quality risks associated with diverse data sources affect the derived data. The GIS is the prime source of information on the location of cables, and detection time strongly depends on whether maps indicate the presence of cables in the construction business. Poor data quality in the GIS can contribute to increased risk or higher risk avoidance costs. A case study provides a numerical example of the calculation of the trade-offs between risk and detection costs and provides an example of the calculation of the costs of data quality. We conclude that the model contributes valuable new insight. 展开更多
关键词 risk assessment data quality geographical information system PROBABILITY spatial data quality
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Urban flood risk assessment under rapid urbanization in Zhengzhou City,China 被引量:2
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作者 LI Guoyi LIU Jiahong SHAO Weiwei 《Regional Sustainability》 2023年第3期332-348,共17页
With accelerated urbanization and climate change,urban flooding is becoming more and more serious.Flood risk assessment is an important task for flood management,so it is crucial to map the spatial and temporal distri... With accelerated urbanization and climate change,urban flooding is becoming more and more serious.Flood risk assessment is an important task for flood management,so it is crucial to map the spatial and temporal distribution of flood risk.This paper proposed an urban flood risk assessment method that takes into account the influences of hazard,vulnerability,and exposure,by constructing a multi-index urban flood risk assessment framework based on Geographic Information System(GIS).To determine the weight values of urban flood risk index factors,we used the analytic hierarchy process(AHP).Also,we plotted the temporal and spatial distribution maps of flood risk in Zhengzhou City in 2000,2005,2010,2015,and 2020.The analysis results showed that,the proportion of very high and high flood risk zone in Zhengzhou City was 1.362%,5.270%,4.936%,12.151%,and 24.236%in 2000,2005,2010,2015,and 2020,respectively.It is observed that the area of high flood risk zones in Zhengzhou City showed a trend of increasing and expanding,of which Dengfeng City,Xinzheng City,Xinmi City,and Zhongmu County had the fastest growth rate and the most obvious increase.The flood risk of Zhengzhou City has been expanding with the development of urbanization.The method is adapted to Zhengzhou City and will have good adaptability in other research areas,and its risk assessment results can provide a scientific reference for urban flood management personnel.In the future,the accuracy of flood risk assessment can be further improved by promoting the accuracy of basic data and reasonably determining the weight values of index factors.The risk zoning map can better reflect the risk distribution and provide a scientific basis for early warning of flood prevention and drainage. 展开更多
关键词 Urban flood Flood risk assessment Geographic information system(GIS) Multi-index system method URBANIZATION Zhengzhou City
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A Socio-Technical Approach to Cyber Risk Management and Impact Assessment
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作者 Konstantinia Charitoudi Andrew Blyth 《Journal of Information Security》 2013年第1期33-41,共9页
Technology is increasingly being used by organisations to mediate social/business relationships and social/business transactions. While traditional models of impact assessment have focused on the loss of confidentiali... Technology is increasingly being used by organisations to mediate social/business relationships and social/business transactions. While traditional models of impact assessment have focused on the loss of confidentiality, integrity and availability, we propose a new model based upon socio-technical systems thinking that places the people and the technology within an organisation’s business/functional context. Thus in performing risk management in a cyber security and safety context, a detailed picture of the impact that a security/safety incident can have on an organisation is developed. This in turn stimulates a more holistic view of the effectiveness, and appropriateness, of a counter measure. 展开更多
关键词 IMPACT assessment risk management Socio-Technical systems
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Tangible Assets Threats and Hazards: Risk Assessment and Management in the Port Domain
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作者 Constantinos I. Chlomoudis Petros L. Pallis Ernestos S. Tzannatos 《Journal of Traffic and Transportation Engineering》 2017年第5期271-278,共8页
Port systems are more prone to being risk oriented. Many specific methods have been found to assess risk in a port area or operation. A review is presented in different approaches on human and environmental risks in p... Port systems are more prone to being risk oriented. Many specific methods have been found to assess risk in a port area or operation. A review is presented in different approaches on human and environmental risks in port area. On the other hand, there is no specific risk management method or fi'amework to cope with threats and hazards regarding on port machines or material accidents and port assets damages or losses. This paper presents a risk management methodology, seeking to investigate a process of assessing the assets hazards and damages into the domain of port container terminal, by taking into account its different factors and their mutual influences. This methodology constitutes a decision support framework that will be used to conduct port to port risk evaluations or to assess a whole port's and terminal's risk level in the critical field of assets damages and losses, in order to facilitate improvement strategies. An empirical study is contacted for the years of 2003-2012, in order to provide evidence for risk assessment and management in an economic effective way, regarding port assets damages and losses, at the Port Container Terminal of Piraeus in Greece. 展开更多
关键词 ASSETS PORT risk assessment management Greece.
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Predictive value of the unplanned extubation risk assessment scale in hospitalized patients with tubes 被引量:6
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作者 Kun Liu Zheng Liu +3 位作者 Lin-Qian Li Meng Zhang Xue-Xue Deng Hong Zhu 《World Journal of Clinical Cases》 SCIE 2022年第36期13274-13283,共10页
BACKGROUND Critical patients often had various types of tubes,unplanned extubation of any kind of tube may cause serious injury to the patient,but previous reports mainly focused on endotracheal intubation.The limitat... BACKGROUND Critical patients often had various types of tubes,unplanned extubation of any kind of tube may cause serious injury to the patient,but previous reports mainly focused on endotracheal intubation.The limitations or incorrect use of the unplanned extubation risk assessment tool may lead to improper identification of patients at a high risk of unplanned extubation and cause delay or nonimplementation of unplanned extubation prevention interventions.To effectively identify and manage the risk of unplanned extubation,a comprehensive and universal unplanned extubation risk assessment tool is needed.AIM To assess the predictive value of the Huaxi Unplanned Extubation Risk Assessment Scale in inpatients.METHODS This was a retrospective validation study.In this study,medical records were extracted between October 2020 and September 2021 from a tertiary comprehensive hospital in southwest China.For patients with tubes during hospitalization,the following information was extracted from the hospital information system:age,sex,admission mode,education,marital status,number of tubes,discharge mode,unplanned extubation occurrence,and the Huaxi Unplanned Extubation Risk Assessment Scale(HUERAS)score.Only inpatients were included,and those with indwelling needles were excluded.The best cut-off value and the area under the curve(AUC)of the Huaxi Unplanned Extubation Risk Assessment Scale were been identified.RESULTS A total of 76033 inpatients with indwelling tubes were included in this study,and 26 unplanned extubations occurred.The patients’HUERAS scores were between 11 and 30,with an average score of 17.25±3.73.The scores of patients with or without unplanned extubation were 22.85±3.28 and 17.25±3.73,respectively(P<0.001).The results of the correlation analysis showed that the correlation coefficients between each characteristic and the total score ranged from 0.183 to 0.843.The best cut-off value was 21,and there were 14135 patients with a high risk of unplanned extubation,accounting for 18.59%.The Cronbach’sα,sensitivity,specificity,positive predictive value,and negative predictive value of the Huaxi Unplanned Extubation Risk Assessment Scale were 0.815,84.62%,81.43%,0.16%,and 99.99%,respectively.The AUC of HUERAS was 0.851(95%CI:0.783-0.919,P<0.001).CONCLUSION The HUERAS has good reliability and predictive validity.It can effectively identify inpatients at a high risk of unplanned extubation and help clinical nurses carry out risk screening and management. 展开更多
关键词 INPATIENT Unplanned extubation risk assessment Prediction Tube management
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The integrated risk assessment and zoning of meteorological disaster in Heilongjiang Province of China 被引量:1
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作者 WenLiang Li LiJuan Zhang +2 位作者 Hong Chen YuHong Gao JinFeng Zhang 《Research in Cold and Arid Regions》 2009年第6期531-540,共10页
This paper describes studies on the integrated risk assessment and zoning of meteorological disaster in Heilongjiang Province,in northeastern China,by using information-diffusion theory and cluster method with 35 year... This paper describes studies on the integrated risk assessment and zoning of meteorological disaster in Heilongjiang Province,in northeastern China,by using information-diffusion theory and cluster method with 35 years of summer temperature and precipitation data from 74 meteorological stations from 1971 through 2005.The information-diffusion theory has been used extensively in risk assessment,yet almost no one has done research about risk assessment by information-diffusion theory based on meteorological disaster standards.Some research results are as follows:the risk probability of low temperature and cold damage in the northern region is higher than that in the southern region;the risk probability of general low temperature and cold damage in the southwestern region is the highest;the risk probability of serious low temperature and cold damage in the northern region is the highest,followed by the central and southeast region;the high-risk region of arid disaster in Heilongjiang Province was primarily located in the southwestern,central,and southern parts of the province;the high-intensity arid disaster was located in the south-eastern region;the high-risk region of flood in Heilongjiang Province was primarily located from the southwest and then across the central part to the western part of Heilongjiang Province;the high-intensity flood disasters were located in almost every part of Heilongjiang Province.We can conclude from the integrated meteorological disaster risk zoning that the high-risk region of mete-orological disaster is primarily located in the southern and northern part of the province,the moderate-risk region is distributed in the central southern region and western region,the low-risk region is located in the eastern part,and the light-risk region is located in the central western part of Heilongjiang Province. 展开更多
关键词 information diffusion cluster method meteorological disaster risk assessment ZONING
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Study on Risk Assessment Method of Informal Landfill
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作者 Xiaona LIU Hua HAN 《Meteorological and Environmental Research》 CAS 2021年第5期60-64,共5页
At present,there are a large number of informal landfills to be treated all over the country. Under the condition of limited treatment funds,it is necessary to prioritize the treatment of informal landfills. In this p... At present,there are a large number of informal landfills to be treated all over the country. Under the condition of limited treatment funds,it is necessary to prioritize the treatment of informal landfills. In this paper,the pollution risk of waste dump,surrounding soil,groundwater and surface water is analyzed,and a set of comprehensive risk assessment method system of informal landfill is established,which could provide reference for decision making department deciding landfill disposal. 展开更多
关键词 Environmental protection Informal landfill Human health risk Water environment risk Comprehensive risk assessment
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Heart Rate Variability Applied to Short-Term Cardiovascular Event Risk Assessment
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作者 Simao Paredes Teresa Rocha +3 位作者 Paulo de Carvalho Jorge Henriques Ramona Cabiddu Joao Morais 《Engineering(科研)》 2013年第10期237-243,共7页
Cardiovascular disease (CVD) risk assessment is an important instrument to enhance the clinical decision in the daily practice as well as to improve the preventive health care promoting the transfer from the hospital ... Cardiovascular disease (CVD) risk assessment is an important instrument to enhance the clinical decision in the daily practice as well as to improve the preventive health care promoting the transfer from the hospital to patient’s home. Due to its importance, clinical guidelines recommend the use of risk scores to predict the risk of a cardiovascular disease event. Therefore, there are several well known risk assessment tools, unfortunately they present some limitations.This work addresses this problem with two different methodologies:1) combination of risk assessment tools based on fusion of Bayesian classifiers complemented with genetic algorithm optimization;2) personalization of risk assessment through the creation of groups of patients that maximize the performance of each risk assessment tool. This last approach is implemented based on subtractive clustering applied to a reduced-dimension space.Both methodologies were developed to short-term CVD risk prediction for patients with Acute Coronary Syndromes without ST segment eleva-tion (ACS-NSTEMI). Two different real patients’ datasets were considered to validate the developed strategies:1) Santa Cruz Hospital, Portugal, N=460 patients;2)LeiriaPombal Hospital Centre, Portugal, N=99 patients.This work improved the performance in relation to current risk assessment tools reaching maximum values of sensitivity, specificity and geometric mean of, respectively, 80.0%, 82.9%, 81.5%. Besides this enhancement, the proposed methodologies allow the incorporation of new risk factors, deal with missing risk factors and avoid the selection of a single tool to be applied in the daily clinical practice. In spite of these achievements, the CVD risk assessment (patient stratification) should be improved. The incorporation of new risk factors recognized as clinically significant, namely parameters derived from heart rate variability (HRV), is introduced in this work. HRV is a strong and independent predictor of mortality in patients following acute myocardial infarction. The impact of HRV parameters in the characterization of coronary artery disease (CAD) patients will be conducted during hospitalization of these patients in the Leiria-Pombal Hospital Centre (LPHC). 展开更多
关键词 CVD risk assessment Knowledge management management of Cardiovascular Diseases Decision-Support systems
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Comparing rockfall hazard and risk assessment procedures along roads for different planning purposes 被引量:4
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作者 MINEO Simone 《Journal of Mountain Science》 SCIE CSCD 2020年第3期653-669,共17页
Hazard and risk assessment procedures of different types of rockfall were analyzed to compare their outcomes when they are applied to the same case study.Although numerous methodologies are available in literature,roc... Hazard and risk assessment procedures of different types of rockfall were analyzed to compare their outcomes when they are applied to the same case study.Although numerous methodologies are available in literature,rockfall hazard and risk analyses are often limited to standard estimations,affected by a margin of uncertainty,especially when relevant engineering projects are about to be realized.Based on the design purpose,different types of approaches can be chosen among the qualitative and quantitative ones available in literature,which allow different levels of analysis.One of the main criticisms related to rockfall events is the risk affecting linear structures,such as road or railways,due both to their strategic relevance for trade and communications and to the great entity of the exposed value(traffic units)traveling along them.In this perspective,a comparison between the qualitative method known as Evolving Rockfall Hazard Assessment(EHRA),the semi-quantitative modified Rockfall Hazard Rating System(RHRS)and the quantitative Rockfall Risk Management(RoMa)approach is herein commented according to a practical application to a case study.It is the case of the rockfall threat along slopes crossed by a strategic road connecting two of the most known spots of eastern Sicily(Italy),at the Taormina tourist complex.Data were retrieved from both recent literature and technical surveys on field.Achieved results highlight how the approaches are affected by a different level of detail and uncertainty,arising also by some necessary assumption that must be taken into account,especially when mitigation measures or territory planning have to be designed.Achieved results can be also taken into account for similar studies worldwide,in order to choose the most suitable procedure based on the design purpose.This is indeed crucial in the perspective of the optimization of time and economic resources in the territorial planning practice. 展开更多
关键词 ROCKFALL risk Rockfal HAZARD Event Tree Analysis EVOLVING ROCKFALL HAZARD assessment(EHRA) ROCKFALL HAZARD Rating system(RHRS) Rockfall risk management(RoMa)
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Critical role of risk management in ground engineering and opportunities for improvement 被引量:2
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作者 Jim Galvin 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2017年第5期725-731,共7页
Green mining is concerned with mining in a sustainable manner, such that the needs of the present are met without compromising future generations. The achievement of this objective depends on balancing social, environ... Green mining is concerned with mining in a sustainable manner, such that the needs of the present are met without compromising future generations. The achievement of this objective depends on balancing social, environmental and economic objectives and has to have regard to both active mining operations and legacy issues associated with mine closure. Ground engineering has a critical role in achieving green mining objectives but its contribution is characterised by pervasive uncertainty. Uncertainty equates to risk. This means that ground engineering should be practiced within a risk management framework that aims to both prevent unwanted outcomes and to mitigate their consequences to an acceptable level. This keynote address presents the fundamentals of risk management and demonstrates its effectiveness by reference to improvements in the safety performance of the NSW coal sector over the past three decades.Nevertheless, ground control remains a mix of art and science, relying heavily on judgements which should be premised on knowledge, skill and experience(that is, competence). Risk management has now been enshrined in mining legislation and operating practice in Australia for over two decades.Notwithstanding this, near-hit and accident and incident investigations, commissions of inquiry and legal proceedings almost invariably identify deficiencies and opportunities for improvements necessary to achieve the objectives of sustainable mining. Three of the more important opportunities which have global application in relation to ground engineering are discussed. These relate to the vexing issue of defining competency in ground engineering; the criteria for undertaking rigorous risk assessment; and the need for ground engineers to become involved in mine rehabilitation and closure planning over the full life cycle of a mine, commencing at the prefeasibility stage. 展开更多
关键词 BOW TIE analysis MINE safety MINE CLOSURE risk assessment risk management Sustainable mining Uncertainty
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Risk Assessment at the Design Phase of Construction Projects in Ghana
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作者 Maurice Azochiman Awuni 《Journal of Building Construction and Planning Research》 2019年第2期39-58,共20页
The study was carried out exclusively in Ghana to explore the approaches employed by consultants in risk assessment at the design phase of projects in Ghana. One hundred and fourteen (114) consultants were selected ou... The study was carried out exclusively in Ghana to explore the approaches employed by consultants in risk assessment at the design phase of projects in Ghana. One hundred and fourteen (114) consultants were selected out of a population of one hundred and eighty six (186) from three main professional associations in Ghana made up of the Ghana Institute of Architects, Ghana Institution of Engineers and the Ghana Institution of Surveyors (Quantity Surveying Division) practicing in Ghana for the study. Both primary and secondary data were collected. A descriptive survey was also used to observe and describe the presence, frequency or absence of characteristics of a phenomenon as it naturally occurred, in order to gain additional information. A questionnaire was also designed to collect data from the architects, engineers and quantity surveyors. The data was analyzed using Statistical Package for the Social Scientists (SPSS) 17.0. Descriptive and inferential statistics, such as frequency tables, percentages and cross tabulations were used in the data analysis and summaries. Simple tests of associations were undertaken by using Chi square and Cramer’s V statistics to compare relationships between variables. Again, relative importance index was also used to analyze some of the data by computing to deduce their rankings. The relative importance index was used to analyze some of the data by computing to deduce their rankings. The research revealed that majority of consultants had an average knowledge of risk management. Based on the findings it was recommended that consultants undergo advanced training in risk assessment. It was therefore suggested that consultancy firms should develop a set of laid down procedures for consultants to use in risk assessment in order that the use of intuition employed by majority is lessened. The challenges observed in risk assessment and the remedial steps suggested curtailing the detrimental effects of risks would be of wide importance to many developing economies. 展开更多
关键词 Construction INDUSTRY PROJECT risk management assessment DESIGN PHASE
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