Browsing Academic by Title
Now showing items 5297-5316 of 26404
-
Crowd Dynamics, Management and Control at Tourist Attractions during Special Events: A Case Study at Souq Waqif Using Pedestride® Crowd Simulation Tool
( Qatar Univesrity Press , 2020 , Conference Paper)"Large crowds can be expected at famous tourist attractions, e.g., Souq Waqif, during special events such as the FIFA World Cup 2022. A comprehensive understanding of crowd dynamics is extremely important in order to ... -
Crowd Evacuation through Crossing Configurations: Effect of Crossing Angles and Walking Speeds on Speed Variation and Evacuation Time
( Multidisciplinary Digital Publishing Institute (MDPI) , 2022 , Article)The design of safe and efficient pedestrian facilities necessitates the knowledge of complex human movements, such as intersecting pedestrian streams, under different conditions. This study aims to experimentally investigate ... -
Crowd Logistics Delivery Determinants: A Stated-Preference Survey
( Qatar Univesrity Press , 2020 , Conference Paper)"the environment. Consumers’ attitudes toward CL are understudied, especially in Qatar, where CL is currently unavailable. The purpose of this paper is to investigate consumers’ reactions to the theoretical attributes ... -
Crowd vs. Expert: What can relevance judgment rationales teach us about assessor disagreement?
( ACM , 2018 , Conference Paper)© 2018 ACM. While crowdsourcing offers a low-cost, scalable way to collect relevance judgments, lack of transparency with remote crowd work has limited understanding about the quality of collected judgments. In prior work, ... -
Crowdfunding Conundrum: Western Ideas and their Chinese Copycats
( UC Berkeley Haas School of Business , 2021 , Other)In the third quarter of 2021, global crowdfunding investment reached $160 billion. Crowdfunding is a relatively recently emerged phenomenon to raise funding from individuals for nascent business ideas. It is considered as ... -
Crowdsourced multi-view live video streaming using cloud computing
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)Advances and commoditization of media generation devices enable capturing and sharing of any special event by multiple attendees. We propose a novel system to collect individual video streams (views) captured for the same ... -
Crowdsourced MultiView Live Video Streaming using Cloud Computing
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Multi-view videos are composed of multiple video streams captured simultaneously using multiple cameras from various angles (different viewpoints) of a scene. Multi-view videos offer more appealing and realistic view of ... -
The crusading plans during the fourteenth and fifteenth century
( Qatar University , 1982 , Article) -
Crushing analysis and multi-objective optimization of different length bi-thin walled cylindrical structures under axial impact loading
( Taylor and Francis Ltd. , 2019 , Article)This article attempts to increase the crashworthiness characteristics of energy absorbers. It is found that the effect of the bi-tubular arrangement on the energy absorption and peak force is nonlinear. This nonlinearity ... -
Crushing behavior of a unit cell of CFRP lattice core for sandwich structures’ application
( Elsevier Ltd , 2017 , Article)Sandwich structures made of composites are designed mainly for higher and efficient load capacity. Mostly, the use of composite materials in lattice core sandwich structures is limited to the face sheet; whereas, the core ... -
Crushing behavior of hybrid hexagonal/octagonal cellular composite system: All made of carbon fiber reinforced epoxy
( Elsevier, Ltd , 2014 , Article)Cellular carbon fiber-reinforced plastic (CFRP) composites, either unfilled or filled with foam, may be of interest for energy absorption application due to their improved crashworthiness. In the current paper, new ... -
Crushing behavior of hybrid hexagonal/octagonal cellular composite system: Aramid/carbon hybrid composite
( Elsevier, Ltd , 2014 , Article)In the current paper a series of experiments were conducted to assess the crashworthiness of cellular hexagonal/octagonal composite device. Each device composed of 6 cells of carbon fiber reinforced composite (CFRP). ... -
Cry1Ac toxicity enhancement towards lepidopteran pest Ephestia kuehniella through its protection against excessive proteolysis
( Elsevier , 2016 , Article)Bacillus thuringiensis has been extensively used in agroecosystems for four decades due to its high specific toxicity. Strategies based on B. thuringiensis proteins combinations for the improvement of its activity present ... -
Cry4Ba and Cyt1Aa proteins from Bacillus thuringiensis israelensis: Interactions and Toxicity mechanism against Aedes aegypti
( Elsevier Ltd , 2015 , Article)Individual crystal proteins from Bacillus thuringiensis israelensis exhibit variable levels of insecticidal activities against mosquito larvae. In all cases, they are much less active compared to the whole crystal proteins ... -
Cryogenic temperature and strain rate dependence of mechanical properties for extruded AA6060 alloys
( Trans Tech Publications Ltd , 2014 , Article)Tensile properties and fracture behavior of an AA6060 alloy were investigated at room temperature (295K) and cryogenic temperature (77K). It was found that both ultimate tensile strength and elongation increased with ... -
Cryopreservation of microalgae from desert environments of Qatar
( Springer Netherlands , 2016 , Article)The Qatar University Culture Collection of Cyanobacteria and Microalgae (QUCCCM) is a unique resource containing a diverse collection of microalgae and cyanobacteria, isolated from the Qatar desert environment. In order ... -
Cryptanalysis of nonlinear confusion component based encryption algorithm
( Elsevier , 2021 , Article)Recently many substitution box based encryption algorithms ensuring privacy have been proposed. Many, chaotic map based S-boxes have been generated posing high nonlinearity and strong cryptographic properties. Encryption ... -
Cryptocurrencies and Finance Theories
( Universiti Teknologi MARA. , 2021 , Article)Cryptocurrency (CCY) as a new key player in the currency system that has drawn the attention of scholars to examine its influence, relations and the opportunities that it may provide. However, a financial theoretical ... -
Cryptographic ransomware encryption detection: Survey
( Elsevier , 2023 , Article)The ransomware threat has loomed over our digital life since 1989. Criminals use this type of cyber attack to lock or encrypt victims' data, often coercing them to pay exorbitant amounts in ransom. The damage ransomware ... -
Cryptosporidium spp., prevalence, molecular characterisation and socio-demographic risk factors among immigrants in Qatar.
( Public Library of Science , 2019 , Article)The World Health Organization WHO has estimated that in developed countries, up to 30% of the population may suffer from foodborne diseases each year, and that in developing countries up to 2 million deaths per annum can ...
