scholarly journals A proposed model for managing the potential risk of group tourism in Egypt in light of security and safety requirements at international Airports

2020 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Nermen Elhattab
Keyword(s):  
Potential Risk ◽  
Safety Requirements ◽  
Proposed Model

A Unified Use-Misuse Case Model for Capturing and Analysing Safety and Security Requirements

2011 ◽  
Vol 5 (4) ◽  
pp. 8-30
Author(s):  
O. T. Arogundade ◽  
A. T. Akinwale ◽  
Z. Jin ◽  
X. G. Yang
Keyword(s):  
Early Stage ◽  
System Development ◽  
Security Requirements ◽  
Health Care Information ◽  
Safety Requirements ◽  
Misuse Case ◽  
Proposed Model ◽  
Development Life Cycle ◽  
Care Information ◽  
The University

This paper proposes an enhanced use-misuse case model that allows both safety and security requirements to be captured during requirements elicitation. The proposed model extends the concept of misuse case by incorporating vulnerable use case and abuse case notations and relations that allows understanding and modeling different attackers and abusers behaviors during early stage of system development life cycle and finishes with a practical consistent combined model for engineering safety and security requirements.The model was successfully applied using health care information system gathered through the university of Kansas HISPC project. The authors were able to capture both security and safety requirements necessary for effective functioning of the system. In order to enhance the integration of the proposed model into risk analysis, the authors give both textual and detailed description of the model. The authors compare the proposed approach with other existing methods that identify and analyze safety and security requirements and discovered that it captures more security and safety threats.

Statistical Modeling and Analysis of Landing Time Intervals

2005 ◽  
Vol 1915 (1) ◽  
pp. 69-78
Author(s):  
Jasenka Rakas ◽  
Huifang Yin
Keyword(s):  
Los Angeles ◽  
Probability Distribution ◽  
Distribution Curve ◽  
Reporting System ◽  
Time Intervals ◽  
Modeling And Analysis ◽  
Normal Distributions ◽  
Left Hand ◽  
Safety Requirements ◽  
Proposed Model

Existing literature suggests that analyses of landing time intervals employ simple statistical models based on time-separation histograms, usually approximated by normal distributions. Although the literature focuses on important issues such as safety, capacity improvements, and separation rules, it does not take into account another important issue: the possible, unique behavior of airlines, pilots, and controllers. In this study such possible, unique behavior is taken into account and a statistical analysis on landing time intervals is performed to find the operational properties of Los Angeles International Airport (LAX), California. On the basis of the properties found, operations of a dominant airline at LAX are compared with those of other airlines by using the Performance Data Analysis and Reporting System (PDARS) database. The PDARS database allows the calculation of landing time intervals on a runway level. A new mathematical model is constructed to fit the probability distribution of landing time intervals, and it is found that the proposed model has the best maximum log likelihood estimations compared with those of existing models. The results also reveal that the behavior of the dominant airline differs from that of the other airlines. The proposed model better approximates the shape of the probability distribution, especially the left-hand side, which usually contains information of greater importance regarding airport operations and especially regarding safety, since all smaller landing time intervals and the landing intervals that fail the safety requirements are concentrated in this part of the probability distribution curve.

scholarly journals Porcine Trypsin in the Manufacture of Biological Medicinal Products. Risks and Safety Requirements

2018 ◽  
Vol 18 (3) ◽  
pp. 161-167
Author(s):  
S. M. Sukhanov ◽  
E. M. Petruchuk
Keyword(s):  
High Resistance ◽  
Potential Risk ◽  
Chemical Treatment ◽  
Raw Materials ◽  
Animal Origin ◽  
Spongiform Encephalopathy ◽  
Quality And Safety ◽  
Medicinal Products ◽  
Safety Requirements ◽  
Physical And Chemical

Trypsin is a reagent widely used in the manufacture of biological medicinal products (BMPs). Until recently, pancreata of cattle, pigs and poultry were the main sources of trypsin preparations. The discovery of the disease called «transmissive spongiform encephalopathy» or «cow rabies» (TSE) in cattle in the late 1980s showed a clear need for limiting the use of this source. Given the potential risk of using trypsin obtained from cattle, porcine trypsin became more commonly used in the production of biological medicinal products. Enzymes obtained from raw materials of animal origin can be contaminated with circoviruses, parvo- and pestiviruses, and mycoplasmas that are common to pigs. Due to high resistance to physical and chemical treatment, these contaminants pose a potential risk to recipients of vaccines, as well as to other biological medicinal products. Prevention of contamination requires measures aimed at detection, reduction and inactivation of foreign agents, both in raw materials and during BMP production. The article considers the most common types of porcine trypsin contamination, methods of its detection, reduction and elimination. The article also contains information on the Russian and international requirements for the quality and safety of porcine trypsin used in the production of biological medicinal products.

A Unified Use-Misuse Case Model for Capturing and Analysing Safety and Security Requirements

2013 ◽  
pp. 202-224
Author(s):  
O. T. Arogundade ◽  
A. T. Akinwale ◽  
Z. Jin ◽  
X. G. Yang
Keyword(s):  
Health Care ◽  
Information System ◽  
Risk Analysis ◽  
Security Requirements ◽  
University Of Kansas ◽  
Health Care Information ◽  
Safety Requirements ◽  
Proposed Model ◽  
Care Information ◽  
The University

The model was successfully applied using health care information system gathered through the university of Kansas HISPC project. The authors were able to capture both security and safety requirements necessary for effective functioning of the system. In order to enhance the integration of the proposed model into risk analysis, the authors give both textual and detailed description of the model. The authors compare the proposed approach with other existing methods that identify and analyze safety and security requirements and discovered that it captures more security and safety threats.

Structure and Interaction of Protamine by Dark Field Electron Microscopy

1976 ◽  
Vol 34 ◽  
pp. 160-161
Author(s):  
D.P. Bazett-Jones ◽  
F.P. Ottensmeyer
Keyword(s):  
Electron Microscopy ◽  
Dark Field ◽  
Amino Acid Sequences ◽  
Dimensional Structure ◽  
3 Dimensional ◽  
Field Electron ◽  
Proposed Model ◽  
Field Electron Microscopy ◽  
Dark Field Electron ◽  
Positively Charged

It has been shown for some time that it is possible to obtain images of small unstained proteins, with a resolution of approximately 5Å using dark field electron microscopy (1,2). Applying this technique, we have observed a uniformity in size and shape of the 2-dimensional images of pure specimens of fish protamines (salmon, herring (clupeine, Y-l) and rainbow trout (Salmo irideus)). On the basis of these images, a model for the 3-dimensional structure of the fish protamines has been proposed (2).The known amino acid sequences of fish protamines show stretches of positively charged arginines, separated by regions of neutral amino acids (3). The proposed model for protamine structure (2) consists of an irregular, right-handed helix with the segments of adjacent arginines forming the loops of the coil.

Pulmonary emboli due to venous aneurysm of extremities

VASA ◽  
2011 ◽  
Vol 40 (4) ◽  
pp. 327-332 ◽  
Author(s):  
Gabrielli ◽  
Rosati ◽  
Vitale ◽  
Millarelli ◽  
Siani ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Surgical Resection ◽  
Potential Risk ◽  
Acute Pulmonary Embolism ◽  
Prophylactic Surgery ◽  
Venous Aneurysm ◽  
Pulmonary Emboli ◽  
Thromboembolic Events ◽  
Thromboembolic Complications ◽  
Risk Patients

Venous aneurysms are uncommon but they can have devastating consequences, including pulmonary embolism, other thromboembolic events and death. We report six cases of venous aneurysm of the extremities, in which the first sign of presence was acute pulmonary embolism. Surgical resection is recommended whenever possible. Our experience suggests that prophylactic surgery is cautiously recommended for low-risk patients with venous aneurysms of the abdomen and strongly recommended for extremity deep and superficial venous aneurysms for their potential risk of developing thromboembolic complications despite adequate anticoagulation. Other venous aneurysms should be excised only if they are symptomatic or enlarging.

Transmyocardial Laser Revascularisation - A Potential Risk in Acute Situation?

Swiss Surgery ◽  
2000 ◽  
Vol 6 (2) ◽  
pp. 65-68
Author(s):  
Mueller ◽  
Tevaearai ◽  
Genton ◽  
Bettex ◽  
von Segesser
Keyword(s):  
Potential Risk ◽  
Transmyocardial Laser Revascularisation ◽  
Analyse Morphométrique

Les effets morphologiques et fonctionnels de la revascularisation transmyocardique au laser (RTML) sont analysés en conditions aiguës sur un modèle porcin. La paroi latérale du ventricule gauche de 15 porcs (poids moyen: 73 +/- 4kg) a été percée de 10 canaux laser (laser: Ho-YAG; longueur d'onde: 2.1 u, diamètre de la sonde: 1.75 mm). Une échocardiographie a été effectuée avant, ainsi que 5 min et 30 min après la procédure. Les paramètres échocardiographiques ont été enregistrés en court axe à la hauteur des canaux laser. Ils comprenaient la fraction d'éjection, la fraction de raccourcissement et la motilité segmentaire de la région lasérisée (échelle de 0 à 3: 0 = normal, 1 = hypokinésie, 2 = akinésie, 3 = dyskinésie). Après sacrifice de l'animal, la région lasérisée a été coupée dans un plan perpendiculaire aux canaux pour histologie et analyse morphométrique. Après 5 min, tous les index échocardiographiques ont montré une aggravation significative par rapport aux valeurs de base (p < 0.01). Après 30 min, plus aucun des paramètres ne présentait de variation significative par rapport aux valeurs de base. La surface de section des lésions mesurait 8.8 +/- 2.4 mm2 soit plus du triple de celle de la sonde laser elle-même (p < 0.01). En conditions aiguës, les lésions dues à la sonde de RTML sont nettement plus grande que la sonde elle-même et entraînent une baisse transitoire de la contractilité segmentaire sur un coeur sain. Ces résultats suggèrent que la RTML doit être utilisée avec prudence en clinique chez les patients avec une mauvaise fonction ventriculaire.

The Influence of Cognitive and Affective Reactions to Feedback on Subsequent Goals

2010 ◽  
Vol 15 (2) ◽  
pp. 121-131 ◽  
Author(s):  
Remus Ilies ◽  
Timothy A. Judge ◽  
David T. Wagner
Keyword(s):  
Performance Feedback ◽  
Business School ◽  
Structural Equation ◽  
Emotional Reactions ◽  
Equation Model ◽  
Proposed Model ◽  
And Performance ◽  
Dispositional Measure ◽  
The Relationship ◽  
Reactions To Feedback

This paper focuses on explaining how individuals set goals on multiple performance episodes, in the context of performance feedback comparing their performance on each episode with their respective goal. The proposed model was tested through a longitudinal study of 493 university students’ actual goals and performance on business school exams. Results of a structural equation model supported the proposed conceptual model in which self-efficacy and emotional reactions to feedback mediate the relationship between feedback and subsequent goals. In addition, as expected, participants’ standing on a dispositional measure of behavioral inhibition influenced the strength of their emotional reactions to negative feedback.

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