scholarly journals Analysis on the Dynamic Attributes of SARS-CoV-2 and COVID-19

2021 ◽  
Vol 10 (1) ◽  
pp. 26-47
Author(s):  
Mohd Abass Dar ◽  
Garima Charak ◽  
Suman Bala ◽  
Sudhanshu Shekhar ◽  
Muneeb Qadir
Keyword(s):  
Dynamic Attributes

scholarly journals Performance Enhancement of Optimized Link State Routing Protocol by Parameter Configuration for UANET

Drones ◽  
2022 ◽  
Vol 6 (1) ◽  
pp. 22
Author(s):  
Esmot Ara Tuli ◽  
Mohtasin Golam ◽  
Dong-Seong Kim ◽  
Jae-Min Lee
Keyword(s):  
Routing Protocol ◽  
Ad Hoc ◽  
Performance Enhancement ◽  
Geographic Routing ◽  
Simulation Software ◽  
Link State ◽  
Parameter Configuration ◽  
Hoc Networks ◽  
Dynamic Attributes ◽  
Optimized Link State Routing

The growing need for wireless communication has resulted in the widespread usage of unmanned aerial vehicles (UAVs) in a variety of applications. Designing a routing protocol for UAVs is paramount as well as challenging due to its dynamic attributes. The difficulty stems from features other than mobile ad hoc networks (MANET), such as aerial mobility in 3D space and frequently changing topology. This paper analyzes the performance of four topology-based routing protocols, dynamic source routing (DSR), ad hoc on-demand distance vector (AODV), geographic routing protocol (GRP), and optimized link state routing (OLSR), by using practical simulation software OPNET 14.5. Performance evaluation carries out various metrics such as throughput, delay, and data drop rate. Moreover, the performance of the OLSR routing protocol is enhanced and named “E-OLSR” by tuning parameters and reducing holding time. The optimized E-OLSR settings provide better performance than the conventional request for comments (RFC 3626) in the experiment, making it suitable for use in UAV ad hoc network (UANET) environments. Simulation results indicate the proposed E-OLSR outperforms the existing OLSR and achieves supremacy over other protocols mentioned in this paper.

scholarly journals Dynamis: Effective Context-Aware Web Service Selection Using Dynamic Attributes

2015 ◽  
Vol 7 (4) ◽  
pp. 110-139 ◽  
Author(s):  
Atousa Pahlevan ◽  
Jean-Luc Duprat ◽  
Alex Thomo ◽  
Hausi Müller
Keyword(s):  
Web Service ◽  
Service Selection ◽  
Context Aware ◽  
Web Service Selection ◽  
Dynamic Attributes

Association of graphic images and dynamic attributes

1977 ◽  
Vol 11 (2) ◽  
pp. 18-23 ◽  
Author(s):  
S. Bergman ◽  
A. Kaufman
Keyword(s):  
Graphic Images ◽  
Dynamic Attributes

scholarly journals QoS-based semantic web service selection

2021 ◽  
Author(s):  
Yijun Chen
Keyword(s):  
Semantic Web ◽  
Web Service ◽  
Service Selection ◽  
Utility Functions ◽  
Semantic Context ◽  
Semantic Web Service ◽  
Web Service Selection ◽  
Dynamic Web ◽  
Qos Parameters ◽  
Dynamic Attributes

This thesis discusses the dynamic web service selection in the semantic context with QoS constraints. The goal of this work is to investigate the mechanism of automated QoS-based semantic web service selection. Semantic Web Service (SWS) aims to achieve the automation of web service tasks, such as service discover, selection, composition and invocation. The task of semantic web service selection is further investigated through this thesis. An architecture is proposed to achieve this task by considering QoS parameters. The QoS parameters are classified into dynamic and static attributes in the architecture. The dynamic attributes are evaluated and measured as an overall value by applying utility functions. This overall value can be modeled in the semantic context for the purpose of service selection. Furthermore, the architecture directly models the static QoS attributes in the semantic context for service selection. Finally, an open SWS challenge scenario named hardware purchasing is used in several experiments in order to evaluate the proposed architecture.

scholarly journals Enhancing the Understanding of Resilience in Health Systems of Low- and Middle-Income Countries: A Qualitative Evidence Synthesis

2021 ◽  
Author(s):  
Pauline Yongeun Grimm ◽  
Sandy Oliver ◽  
Sonja Merten ◽  
Wai Wai Han ◽  
Kaspar Wyss
Keyword(s):  
Health System ◽  
Conceptual Framework ◽  
Health Systems ◽  
Evidence Synthesis ◽  
A Priori ◽  
Qualitative Evidence Synthesis ◽  
Middle Income ◽  
Middle Income Countries ◽  
Dynamic Attributes ◽  
Low And Middle Income

Background: A country’s health system faces pressure when hit by an unexpected shock, such as what we observe in the midst of the coronavirus disease 2019 (COVID-19) pandemic. The concept of resilience is highly relevant in this context and is a prerequisite for a health system capable of withstanding future shocks. By exploring how the key dimensions of the resilient health system framework are applied, the present systematic review synthesizes the vital features of resilient health systems in low- and middle-income countries. The aim of this review is to ascertain the relevance of health system resilience in the context of a major shock, through better understanding its dimensions, uses and implications. Methods: The review uses the best-fit framework synthesis approach. An a priori conceptual framework was selected and a coding framework created. A systematic search identified 4284 unique citations from electronic databases and reports by non-governmental organisations, 12 of which met the inclusion criteria. Data were extracted and coded against the pre-existing themes. Themes outside of the a priori framework were collated to form a refined list of themes. Then, all twelve studies were revisited using the new list of themes in the context of each study. Results: Ten themes were generated from the analysis. Five confirmed the a priori conceptual framework that capture the dynamic attributes of a resilient system. Five new themes were identified as foundational for achieving resilience: realigned relationships, foresight and motivation as drivers, and emergency preparedness and change management as organisational mechanisms. Conclusion: The refined conceptual model shows how the themes inter-connect. The foundations of resilience appear to be critical especially in resource-constrained settings to unlock the dynamic attributes of resilience. This review prompts countries to consider building the foundations of resilience described here as a priority to better prepare for future shocks.

Evaluating the Degree of Trust Under Context Sensitive Relational Database Hierarchy Using Hybrid Intelligent Approach

2015 ◽  
Vol 2 (1) ◽  
pp. 1-21 ◽  
Author(s):  
Manash Sarkar ◽  
Soumya Banerjee ◽  
Aboul Ella Hassanien
Keyword(s):  
Fuzzy Logic ◽  
Relational Model ◽  
Adjacent Level ◽  
Trust Value ◽  
Agent Based ◽  
Real Application ◽  
Context Sensitive ◽  
Trust Relationships ◽  
Dynamic Attributes ◽  
Intelligent Approach

Trust is a binary value either 0 or 1which is not measurable in real application. An entity can either trust another entity completely or do not trust at all. Trust between different entities in generalization-specialization relational model in database varies with respect to adjacent level of hierarchy. Trust value among entities depends not only on hierarchy level but also the context in which entities belong. In this paper the authors propose a model that allows evaluating trust relationships between two entities in the same context. Basically the trust depends on parameters like knowledge, experience and recommendation. In real application it is not always possible to have prior knowledge about mentioned entities. Extending this theory, it is shown that how the trust relationships is evaluated between different entities in different contexts of specialization level. As the trust represents uncertainty therefore, fuzzy logic is used to overcome the concept of binary value for trust. Considering the dynamic attributes of an entity based system, an appropriate agent based methodology could be incorporated. This paper introduced a model called FACO based on Fuzzy logic and Ant colony to calculate both the trust and the updated trust value among entities.

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