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A Deep-CNN Crowd Counting Model for Enforcing Social Distancing during COVID19 Pandemic: Application to Saudi Arabia’s Public Places

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Computers, Materials & Continua 2021年第2期66卷 1315-1328页

作者： Salma Kammoun Jarraya Maha Hamdan Alotibi Manar Salamah Ali Department of Computer Science FCITKing Abdulaziz UniversityJeddahSaudi Arabia miracl-laboratory Sfax UniversitySfaxTunisia Department of Computer Science King Khalid UniversityAbhaSaudi Arabia

With the emergence of the COVID19 virus in late 2019 and the declaration that the virus is a worldwide pandemic,health organizations and governments have begun to implement severe health precautions to reduce the spread of the virus and preserve human *** enforcement of social distancing at work environments and public areas is one of these obligatory *** management is one of the effective measures for social *** reducing the social contacts of individuals,the spread of the disease will be immensely *** this paper,a model for crowd counting in public places of high and low densities is *** model works under various scene conditions and with no prior knowledge.A Deep CNN model(DCNN)is built based on convolutional neural network(CNN)structure with small kernel size and two *** increase the efficiency of the model,a convolutional neural network(CNN)as the front-end and a multi-column layer with Dilated Convolution as the back-end were ***,the proposed method accepts images of arbitrary sizes/scales as inputs from different *** evaluate the proposed model,a dataset was created from images of Saudi people with traditional and non-traditional Saudi *** model was also trained and tested on some existing *** to current counting methods,the results show that the proposed model has significantly improved efficiency and reduced the error *** achieve the lowest MAE by 67%,32%.and 15.63%and lowest MSE by around 47%,15%and 8.1%than M-CNN,Cascaded-MTL,and CSRNet respectively.

关键词： CNN crowd counting COVID19

Approach to Model-Based Development of Context-Aware Application

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Journal of Computer and Communications 2015年第5期3卷 212-219页

作者： Imen Jaouadi Raoudha Ben Djemaa Hanene Ben Abdallah miracl FSEG Sfax Tunisia miracl ISIMS Sfax Tunisia

In order to address challenges posed by advances in mobile computing, ubiquitous devices software engineering, wireless and sensor technologies in many applications running, this paper provides an approach that simplifies the design and the implementation of context-aware Interactive systems called CAISDA (Context-Aware Interactive System Development Approach). This approach is based on the analysis and synthesis of context-aware frameworks proposed in literature.

关键词： Context-Aware Model Based Development Runtime Adaptation

A Formal Testing Model for Operating Room Control System Using Internet of Things

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Computers, Materials & Continua 2021年第3期66卷 2997-3011页

作者： Moez Krichen Seifeddine Mechti Roobaea Alroobaea Elyes Said Parminder Singh Osamah Ibrahim Khalaf Mehedi Masud Faculty of CSIT AlBaha UniversityAlBahaSaudi Arabia&ReDCAD LaboratorySfax UniversitySfaxTunisia miracl laboratory Sfax UniversitySfaxTunisia Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia International Institute of Technology of Sfax SfaxTunisia School of Computer Science and Engineering Lovely Professional UniversityPhagwara CityIndia Al-Nahrain Nanorenewable Energy Research Center Al-Nahrain UniversityBaghdadIraq

Technological advances in recent years have significantly changed the way an operating room *** work aims to create a platformto solve the problems of operating room occupancy and prepare the rooms with an environment that is favorable for all *** this system,a doctor can control all operation rooms,especially before an operation,and monitor their temperature and humidity to prepare for the ***,in the event of a problem,an alert is sent to the nurse responsible for the room and medical stuff so that the problem can be *** platformis tested using a Raspberry PI card and *** sensors are connected to a cloud layer that collects and analyzes the temperature and humidity values obtained from the environment during an *** result of experimentations is visualized through a web application and an Android *** platform also considers the security aspects such as authorization to access application functionalities for the Web and the mobile *** can also test and evaluate the system’s existing problems and vulnerabilities using the IEEE and owasp IoT ***,the proposed framework is extended with a model based testing technique that may be adopted for validating the security aspects.

关键词： Communication Internet of Things control rooms sensors cloud robot

A provable-secure and practical two-party distributed signing protocol for SM2 signature algorithm

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Frontiers of Computer Science 2020年第3期14卷 203-215页

作者： Yudi ZHANG Debiao HE Mingwu ZHANG Kim-Kwang Raymond CHOO Key laboratory of Aerospace Information Security and Trusted Computing of Ministry of Education School of Cyber Science and EngineeringWuhan UniversityWuhan 430072China School of Computer Sciences Hubei University of TechnologyWuhan 430068China Department of Information Systems and Cyber Security and Department of Electrical and Computer Engineering University of Texas at San AntonioSan AntonioTX 78249USA

Mobile devices are widely used for data access,communications and ***,storing a private key for signature and other cryptographic usage on a single mobile device can be challenging,due to its computational ***,a number of(t,n)threshold secret sharing schemes designed to minimize private key from leakage have been proposed in the ***,existing schemes generally suffer from key reconstruction *** this paper,we propose an efficient and secure two-party distributed signing protocol for the SM2 signature *** latter has been mandated by the Chinese government for all electronic commerce *** proposed protocol separates the private key to storage on two devices and can generate a valid signature without the need to reconstruct the entire private *** prove that our protocol is secure under nonstandard ***,we implement our protocol using miracl Cryptographic SDK to demonstrate that the protocol can be deployed in practice to prevent key disclosure.

关键词： SM2 signature two-party signing wireless environment provable security threshold secret sharing