scholarly journals The Application of a Proposed Risk Assessment Approach on Rock Failure Hazard on Manshiet Nasser District

2020 ◽  
Vol 76 (2) ◽  
pp. 91-110
Author(s):  
Donia Fakhri Abdel Monem Nahla ◽  
Heba Nabil Abdel Hamed

Rock failure is one of the most geomorphological hazards that cause considerable damages in different regions every year. To effectively mitigate this hazard, new methodologies are needed to develop a better understanding of rock failure assessment and management. In recent years, risk analysis and assessment have become an important tool in addressing uncertainty. However, the all-embracing perspective of the notion of risk is not an easy task to undertake since it requires data availability at different scales and a multidisciplinary point of view. The research aims to analyse the factors causing the occurrence of rock failure by analysing hazard and vulnerability factors using a proposed risk assessment approach to be applied on Mansheit Nasser district. The research uses a quantitative analytical risk assessment methodology. The methodology used to assess the risk of rock failure in Mansheit Nasser district is to estimate the hazard (H) and the vulnerability (V). The risk is calculated by using equations mentioned in the research and the arc GIS programme to prepare maps. The equation is used to standardise the value of risk factors and unify their weights. The research concludes that the rock failure risk index (RFRI) determines the most vulnerable areas to rock failure in Manshiet Nasser to estimate the elements at risk (E).

2012 ◽  
Vol 1 (33) ◽  
pp. 16
Author(s):  
Mireille Escudero Castillo ◽  
Edgar Mendoza Baldwin ◽  
Rodolfo Silva Casarín

Extreme hydro-meteorological phenomena lead annually to serious damage and losses in the coastal zone of Isla del Carmen, on the Gulf of Mexico. The importance of the risk assessment is the possibility of preventing or reducing those harmful effects. In this context, an integrated risk assessment approach is performed based on the source-pathway-receptor concept to assess the flooding risk in the area. The paper analyses the consequences on the dune ecosystem that extends longitudinally along the island; and the effects on the population, infrastructure and natural habitat located next to the beach. The results of the study will be used to define the zones with a higher level of risk and to propose flood risk mitigation measures. Moreover, the study will contribute to the establishment of specific legislation which supports the protection of the coastal dune.


2019 ◽  
Vol 16 (6) ◽  
pp. 78-89
Author(s):  
O. G. Arkad'eva ◽  
N. V. Berezina

Objectives. The object of the research is the process of assessing the social development risks, which involves ranking the objects according to their degree of exposure to risk factors. As the subject of the study we designate the main weaknesses of the risk assessment methodology using risk index ratings in various fields based on a research of Russian and foreign scientific and practical experience. The purpose of the study is the formation of a set of theoretical principles that form the ground for improving the risk assessment methodology based on the construction of integrated risk index ratings.Methods. The main research method was a comparative analysis of the research results of foreign and Russian scientists on risk assessment in general and the formation of integrated risk indices in particular.Results. As a result of the study, the most significant weaknesses inherent in the risk assessment methodology were identified, and the failings of the use of risk index ratings for risk assessment from different angles were specified. Some identified failings are illustrated by the example of the UN World Risk Index calculation methodology. Recommendations to eliminate identified failings are formed, ordered in a logical sequence.Conclusions. As a result of the study it was established that the formulation of goals and objectives of assessing the social development risks substantially determines the assessment methodology and affects its results. In the case when the use of integrated risk index ratings meets the goals and objectives of the assessment, the subject of the assessment should take into account a number of fundamental methodological provisions that can significantly affect the assessment results, their objectivity and the adequacy to the problem being solved.The authors declare no conflict of interest


2019 ◽  
Vol 10 (2) ◽  
pp. 251-273 ◽  
Author(s):  
Fred S. Roberts

AbstractAlthough cyber security has become widely recognized as a serious threat to our modern world, there are new threats to our security that combine cyber with other modes of “attack.” This article explores the increasingly important theme in homeland and national security that future attacks will be multimodal, in particular including both a cyber and a physical component, where the cyber attack is intended to make it easier to succeed in the physical attack, and is not an end in itself. The article describes sample scenarios of combined cyber and physical attacks in two sectors where even just cyber security efforts have lagged behind: sports stadiums and the maritime transportation system. It presents an approach to comparing the risk of a combined cyber followed by physical attack and that of a “traditional” physical attack on the same target. It then analyzes the different stadium and maritime examples from the point of view of this risk assessment approach.


2012 ◽  
Vol 57 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Ionel-Lucian Cioca ◽  
Roland Iosif Moraru

In order to meet statutory requirements concerning the workers health and safety, it is necessary for mine managers within Valea Jiului coal basin in Romania to address the potential for underground fires and explosions and their impact on the workforce and the mine ventilation systems. Highlighting the need for a unified and systematic approach of the specific risks, the authors are developing a general framework for fire/explosion risk assessment in gassy mines, based on the quantification of the likelihood of occurrence and gravity of the consequences of such undesired events and employing Root-Cause analysis method. It is emphasized that even a small fire should be regarded as being a major hazard from the point of view of explosion initiation, should a combustible atmosphere arise. The developed methodology, for the assessment of underground fire and explosion risks, is based on the known underground explosion hazards, fire engineering principles and fire test criteria for potentially combustible materials employed in mines.


2015 ◽  
Vol 14 (6) ◽  
pp. 1399-1408 ◽  
Author(s):  
Catalin Cioaca ◽  
Cristian-George Constantinescu ◽  
Mircea Boscoianu ◽  
Ramona Lile

2018 ◽  
Author(s):  
Michael H. Azarian

Abstract As counterfeiting techniques and processes grow in sophistication, the methods needed to detect these parts must keep pace. This has the unfortunate effect of raising the costs associated with managing this risk. In order to ensure that the resources devoted to counterfeit detection are commensurate with the potential effects and likelihood of counterfeit part usage in a particular application, a risk based methodology has been adopted for testing of electrical, electronic, and electromechanical (EEE) parts by the SAE AS6171 set of standards. This paper provides an overview of the risk assessment methodology employed within AS6171 to determine the testing that should be utilized to manage the risk associated with the use of a part. A scenario is constructed as a case study to illustrate how multiple solutions exist to address the risk for a particular situation, and the choice of any specific test plan can be made on the basis of practical considerations, such as cost, time, or the availability of particular test equipment.


2020 ◽  
Vol 39 (4) ◽  
pp. 31-55
Author(s):  
Chiraz Ben Ali ◽  
Sabri Boubaker ◽  
Michel Magnan

SUMMARY This paper examines whether multiple large shareholders (MLS) affect audit fees in firms where the largest controlling shareholder (LCS) is a family. Results show that there is a negative relationship between audit fees and the presence, number, and voting power of MLS. This is consistent with the view that auditors consider MLS as playing a monitoring role over the LCS, mitigating the potential for expropriation by the LCS. Therefore, our evidence suggests that auditors reduce their audit risk assessment and audit effort and ultimately audit fees in family controlled firms with MLS. Data Availability: Data are available from the public sources cited in the text. JEL Classifications: G32; G34; M42; D86.


2021 ◽  
Vol 190 ◽  
pp. 105319
Author(s):  
Gustavo Machado ◽  
Luis Gustavo Corbellini ◽  
Alba Frias-De-Diego ◽  
Gustavo Nogueira Dieh ◽  
Diego Viali dos Santos ◽  
...  

Author(s):  
Ali Alsaegh ◽  
Elena Belova ◽  
Yuriy Vasil’ev ◽  
Nadezhda Zabroda ◽  
Lyudmila Severova ◽  
...  

The novel coronavirus (COVID-19) outbreak is a public health emergency of international concern, and this emergency led to postponing elective dental care procedures. The postponing aimed to protect the public from an unknown risk caused by COVID-19. At the beginning of the outbreak, for public health authorities, the aerosol-generating procedures and the close proximity between dental care workers and patients in dentistry represented sufficient justification for the delay of dental visits. Dental care is a priority, and for many years, studies have proven that the lack and delay of dental care can cause severe consequences for the oral health of the general population, which can cause a high global burden of oral diseases. Safety is necessary while resuming dental activities, and risk assessment is an efficient method for understanding and preventing the COVID-19 infectious threats facing the dental industry and affecting dental care workers and patients. In this study, for safe dental care delivery, we adapted risk assessment criteria and an approach and an occupational classification system. Based on those tools, we also recommend measures that can help to minimize infectious risk in dental settings.


Author(s):  
Suren B. Bandara ◽  
Ania Urban ◽  
Lisa G. Liang ◽  
Jillian Parker ◽  
Ernest Fung ◽  
...  

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