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1دورية أكاديمية
المؤلفون: Sesh Commuri, Mohamed K. Watfa
المصدر: International Journal of Distributed Sensor Networks, Vol 2, Iss 4, Pp 333-353 (2006)
مصطلحات موضوعية: Electronic computers. Computer science, QA75.5-76.95
وصف الملف: electronic resource
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2دورية أكاديمية
المؤلفون: Mohamed K. Watfa, Samir Selman, Hovig Denkilkian
المصدر: International Journal of Distributed Sensor Networks, Vol 6 (2010)
مصطلحات موضوعية: Electronic computers. Computer science, QA75.5-76.95
الوصف: Energy savings have always been the primary concern in wireless sensor network protocols, however there are applications where latency and throughput are prioritized over energy efficiency and are so significant that the application would not be able to satisfy its requirements without them. The communication unit and the antenna operation consume most of the battery-powered energy of the node. Thus, the access to the medium must be controlled in a very strict manner in order to avoid collisions which result in lost transmissions and have a dramatic impact on the lifetime of the network. Although existing duty cycle MAC protocols are power efficient, they introduce significant end-to-end delivery latency and provide poor throughput. In this paper, we propose SN-MAC, a CDMA-based power controlled medium access protocol that uses both transmitter-based and receiver-based CDMA inside a formed cluster, and uses a TDMA schedule to make the cluster heads communicate with the base station. Our algorithm targets latency and throughput needs in addition to its ability to increase the overall network lifetime. We provide a head-to-head comparison with other protocols through extensive simulations focusing on the performance in terms of latency, throughput, and energy consumption.
وصف الملف: electronic resource
Relation: https://doaj.org/toc/1550-1477
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المؤلفون: Mohammed Yassine Labib, Mohamed K. Watfa
المصدر: Journal of Foodservice Business Research. 26:323-351
مصطلحات موضوعية: Food Science
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4
المؤلفون: Nada Shahin, Mohamed K. Watfa, Ahmed Abdelrehim, Kamal Jaafar
المصدر: International Journal of Construction Management. 23:1653-1664
مصطلحات موضوعية: Project success, Process management, Computer science, Management of Technology and Innovation, Strategy and Management, Best practice, Triple bottom line, Sustainability, Building and Construction, Structural equation modeling, Confirmatory factor analysis
الوصف: Sustainability, linked to the triple bottom line is a very advantageous approach in managing construction projects. However, organizations continue to apply traditional management best practices th...
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5
المؤلفون: Mohamed K. Watfa, Tarek Kaddoumi
المصدر: International Journal of Lean Six Sigma. 13:136-155
مصطلحات موضوعية: Engineering, Process management, business.industry, computer.internet_protocol, Change management, Enterprise architecture, 020207 software engineering, 02 engineering and technology, Service-oriented architecture, Business model, computer.software_genre, 020204 information systems, Enterprise 2.0, 0202 electrical engineering, electronic engineering, information engineering, Generalizability theory, business, computer, Agile software development, Dependency (project management)
الوصف: Purpose The application of agility principles and methodologies on Enterprise Architecture (EA) is a promising field. This paper aims to provide an in-depth study of the Agile Enterprise Architecture (AEA) by studying EA practitioners’ perspectives to propose a foundational framework for AEA. Design/methodology/approach The authors formulate a foundational framework that defines the AEA motivators, enablers and blockers using the agile manifesto as one of the AEA enablers where a total of 156 EA stakeholders with at least one year of experience in enterprise architecture were surveyed, and a set of hypotheses was analyzed and tested based on the proposed framework. The authors also develop a quantitative method to evaluate the agility index of the EA based on the introduced framework. Findings The research results show with significance that enterprise architects perceive positively the application of the agility methodologies on the enterprise architecture. This perception is primarily affected by the enterprise size, the EA dependency and the agile methodologies awareness. The findings also indicate that AEA is primarily motivated by the Business and IT Change Ready and Responsive EA. Finally, an EA Agility Index (EAAI) was designed to assess the agility application of the EA based on the three forces, i.e. motivators, enablers and blockers. Research limitations/implications Because of the chosen research approach and the sample size, the research results may lack generalizability. Also, EAAI designed was not thoroughly tested. Practical implications The paper includes implications for the design and development of an EA Agility Index, and the need to increase the awareness of the agility methodologies to overcome the blocker of the unfamiliarity with the agile methodologies implying that the current business models in enterprise must be more aligned with the agile methodologies. Originality/value While there are efforts to develop AEA frameworks, one of the major findings of the literature review conducted is that there is evident research gap in the literature on the perception and associated factors of the EA stakeholders on having an agile enterprise architecture. This paper attempts to fill this gap.
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6
المؤلفون: Kamal Jaafar, Mohamed K. Watfa, Amal E. Hawash
المصدر: Journal of Information Technology in Construction. 26:427-440
مصطلحات موضوعية: Architectural engineering, Computer science, business.industry, 020209 energy, 0211 other engineering and technologies, 02 engineering and technology, Building and Construction, Energy consumption, Computer Science Applications, Glazing, Traffic congestion, Building information modeling, 021105 building & construction, 0202 electrical engineering, electronic engineering, information engineering, Facade, business, Building management, Civil and Structural Engineering, Efficient energy use, Waste disposal
الوصف: The construction industry has a huge impact on the environment in terms of noise, water and land pollution, traffic congestion and waste disposal. Another aspect of the construction industry impact on the environment is the increasing energy consumption. According to published research, buildings energy use is expected to increase by 32% by the year 2040. As a result, efforts have been directed toward improving green building awareness and the application of sustainability concepts in the design, construction and building management processes. In this research, using extensive simulations, the integration between Building Information Modeling methodology (BIM) and Building Energy Modeling (BEM) methodologies in order to effectively minimize the overall energy consumption of a residential building in the UAE is investigated by studying several design factors including: building orientation and windows type, size and distribution on the overall building energy consumption. Results show that to increase the modelled building’s energy and financial efficiency, recommended changes to the initial design have to be done including changing the distribution of the southern façade and the type of windows glazing used. More specifically, there was a peak energy reduction of: 8% with a 180 degrees building orientation angle, 2% with a window to wall ratio of 15%, and 2% when double glazing windows were used. This work validates that the combination of BIM and BEM allows to enhance the overall building energy consumption efficiency and to further establish the needed sustainability goals through a generated 3D model.
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::21030dd9e032ca96541dab84cbe4d24e
https://doi.org/10.36680/j.itcon.2021.023 -
7
المؤلفون: Mohamed K. Watfa, Aya Akili
المصدر: International Journal of Construction Management. 23:799-813
مصطلحات موضوعية: Demographic change, Management of Technology and Innovation, Strategy and Management, Population size, Theory of planned behavior, Intention to use, sense organs, Building and Construction, Virtual reality, skin and connective tissue diseases, Psychology, Construct (philosophy), Social psychology
الوصف: The increased population size of the elderly calls upon researchers to address the consequences of the unparalleled demographic change and construct reassuring communities that would be accepted by...
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8
المؤلفون: Mohamed K. Watfa, Nada Shahin
المصدر: Technology and Disability. 32:255-269
مصطلحات موضوعية: 030506 rehabilitation, 030507 speech-language pathology & audiology, 03 medical and health sciences, Rehabilitation, Media studies, Health Informatics, 0305 other medical science, Psychology
الوصف: BACKGROUND: Intelligent Personal Assistants have been booming around the world since 2014, allowing millions of users to interact with different cloud-based software via speech. Unfortunately, the Deaf and Hard of Hearing individuals have been left out without recognizable accessibility to such technologies, although it might be used to make their daily life routine easier. OBJECTIVE: In this research, the researcher studies the interaction and perception of Amazon’s Alexa among the Deaf and Hard of Hearing in the United Arab Emirates in its current set up (Tap-to-Alexa accessibility option) in addition to Sign Language as an input method. The researcher expands on the Technology Acceptance Model to study the acceptance of Alexa as an assistive technology for the Deaf and Hard of Hearing. Additionally, the researcher discusses more suitable input methods and solutions to allow Alexa, and other Intelligent Personal Assistants, be more accessible for the Deaf and Hard of Hearing. METHODS: The mixed method is used in this research in terms of collecting primary data through hands-on experiments, surveys, and interviews with the Deaf and Hard of Hearing participants. RESULTS: The researcher found that the Deaf and Hard of Hearing in the United Arab Emirates perceive that Sign Language combined with a Live interpreter is better than the accessibility option “Tap-to-Alexa”, which is a solution provided by Amazon. The researcher also found that Sign Language combined with a Live interpreter is the most suitable input method to make the device accessible for the Deaf and Hard of Hearing, in addition to translating the “Tap-to-Alexa” to different languages. Finally, the researcher proposes a modification to the Technology Acceptance Model to suit the research study of the Deaf and Hard of Hearing perception of Alexa. CONCLUSIONS: The researcher concludes that the ideal scenario for the Deaf and Hard of Hearing to interact and benefit the most from Amazon’s Alexa, and IPAs in general, is to include Sign Language as an embedded input method in the device and provide live interpreters; this sheds light on the importance of the interpreters’ jobs around the world. Additionally, “Tap-to-Alexa” must be translated into different languages for a better perception of the input method.
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::5b8d31efd869f37c45d563070de19f8d
https://doi.org/10.3233/tad-200286 -
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المؤلفون: Maclean Iral Dsouza, Mohamed K. Watfa
المصدر: International Journal of Simulation and Process Modelling. 18:165
مصطلحات موضوعية: Applied Mathematics, Modeling and Simulation, Computer Science Applications
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::cafffae7f2dc55614ed31370f9215c09
https://doi.org/10.1504/ijspm.2022.126107 -
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المؤلفون: Daniel Sobh, Moataz M. Kamel, Mohamed K. Watfa, Brian Lobo
المصدر: IEEE Transactions on Professional Communication. 60:147-164
مصطلحات موضوعية: Service (systems architecture), Knowledge management, business.industry, Computer science, Process (engineering), Best practice, 05 social sciences, 050301 education, 050801 communication & media studies, Context (language use), Resistance (psychoanalysis), Digital media, 0508 media and communications, Game design, Industrial relations, Electrical and Electronic Engineering, business, 0503 education, Enterprise software
الوصف: Research problem: Gamification is a concept that originates from the digital media domain. It includes a process of enhancing a service using game design elements in nongame contexts. Although much research exists on gamification, very few studies focus on the application of gamification in the enterprise. Research questions: (1) How do managers currently use and experience gamification as a communication medium? (2) Why is it that few instances of gamification exist in enterprise management? (3) Is gamification's own branding somehow cannibalizing itself in enterprise applications? Literature review: We reviewed gamification literature in the workplace and looked at the applicability of game design elements within the enterprise culture. Enterprise gamification is still considered uncharted territory, and more research on gamification in the enterprise is needed. But existing research studies support our claims that there is high potential for enterprise gamification that needs to be explored. Methodology: Observations were made during fieldwork with an exploratory interview research approach. These observations were put to test via an online psychological single-blind controlled quantitative experiment conducted with 198 survey respondents to investigate the effect of branding on gamification and its perception in the enterprise context. Results and conclusions: The results show that using the “gamification” brand clearly drives lower rates of perceived acceptance of the concept, whereas using an “unbranded” version of the same gamification concepts results in comparatively higher rates of perceived acceptance and a general willingness to adopt within the enterprise context. The results also confirm that “interest” and “branding” are interrelated, and that gamification faces higher rates of resistance, lower rates of adoption, and lower success rates in the enterprise compared to other fields. Thus, enterprise gamification may not be correctly branded, and our research recommends the use of a set of procedural, prepackaged best practices, in the form of an implementation framework, to guarantee optimal design and implementation.
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::970c97cc0b57678eb37fd696f059183a
https://doi.org/10.1109/tpc.2017.2656598
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