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16篇 您的检索式:作者名="Alajaji"
    题名 作者 年代 出处 被引量
1Design and performance of VQ-based hybrid digital-analog joint source-channel codes显示文摘MIKAEL SKOGLUND NAM PHAMDO FADY ALAJAJI 2002IEEE Transactions on Information Theory2002,48,3:1
2The Kullback-Leibler divergence rate between Markov sources显示文摘Rached Z Alajaji F Campbell L L 2004IEEE Trans on Information Theory2004,50,5:1
3The Kullback-leibler divergence rate between Markov murces information theory 显示文摘Z Rached F Alajaji L L Campbell 2004IEEE Trans on Information Theory2004,50,5:1
4The capacity-cost function of discrete additive noise channels with and without feedback显示文摘Alajaji F Whalen N 2000IEEE Trans Inform Theory2000,46,3:1
5A Lower Bound on the Probabilityof a Finite Union of Events 显示文摘Kuai H Alajaji F Takahara G 2000Discrete Mathematics2000,215,:1
6Hybrid digital-analog coding with bandwidth compression for gaussion source- channel pairs显示文摘Yadong Wang Alajaji F Linder T 2009IEEE transactions on communications2009,57,4:1
7Turbo codes for non-uniform memoryless sources over noisy channels显示文摘G Zhu F Alajaji 2002IEEE Communications Letters2002,6,2:1
8A model for correlated Rician fading channels based on a finite queue显示文摘Zhong L Alajaji F Takahsra G 0,,01:1
9Nutritional composition of chickpea ( Cicer arietinum L.) as affected by microwave cooking and other traditional cooking methods显示文摘Saleh A. Alajaji Tarek A. El-Adawy 2006Journal of Food Composition and Analysis2006,,8:1
10A Generalized Poor-Verdú Error Bound for Multihypothesis Testing显示文摘Chen P N Alajaji F 2012IEEE Transactions on Information Theory2012,58,1:1
11A Lower Bound on the Probability of a Finite Union of Events显示文摘Kuai H Alajaji F Takahara G 2000Discrete Mathematics2000,215,:1
12The Kullback-Leibler divergence rate between markov sources显示文摘Rached Z Alajaji F and Campbell L L 2004IEEE Transactions on Information Theory2004,50,5:1
13Channel codes that exploit the residual redundancy in CELP-encoded speech显示文摘ALAJAJI F PHAMDO N FUJA T 1996IEEE Transactions on Speech and Audio Processing1996,14,5:1
14INPHOVIS:Interactive visual analytics for smartphone-based digital phenotyping显示文摘Digital phenotyping is the characterization of human behavior patterns based on data from digital devices such as smartphones in order to gain insights into the users’state and especially to identify ailments.To support supervised machine learning,digital phenotyping requires gathering data from study participants’smartphones as they live their lives.Periodically,participants are then asked to provide ground truth labels about their health status.Analyzing such complex data is challenging due to limited contextual information and imperfect health/wellness labels.We propose INteractive PHOne-o-typing VISualization(INPHOVIS),an interactive visual framework for exploratory analysis of smartphone health data to study phone-o-types.Prior visualization work has focused on mobile health data with clear semantics such as steps or heart rate data collected using dedicated health devices and wearables such as smartwatches.However,unlike smartphones which are owned by over 85 percent of the US population,wearable devices are less prevalent thus reducing the number of people from whom such data can be collected.In contrast,the‘‘low-level'sensor data(e.g.,accelerometer or GPS data)supported by INPHOVIS can be easily collected using smartphones.Data visualizations are designed to provide the essential contextualization of such data and thus help analysts discover complex relationships between observed sensor values and health-predictive phone-o-types.To guide the design of INPHOVIS,we performed a hierarchical task analysis of phone-o-typing requirements with health domain experts.We then designed and implemented multiple innovative visualizations integral to INPHOVIS including stacked bar charts to show diurnal behavioral patterns,calendar views to visualize day-level data along with bar charts,and correlation views to visualize important wellness predictive data.We demonstrate the usefulness of INPHOVIS with walk-throughs of use cases.We also evaluated INPHOVIS with expert feedback and received encouraging responses.Hamid Mansoor Walter Gerych Abdulaziz Alajaji Luke Buquicchio Kavin Chandrasekaran Emmanuel Agu Elke Rundensteiner Angela Incollingo Rodriguez 2023Visual Informatics2023,7,2:0
15Authenblue: A New Authentication Protocol for the Industrial Internet of Things显示文摘The Internet of Things(IoT)is where almost anything can be controlled and managed remotely by means of sensors.Although the IoT evolution led to quality of life enhancement,many of its devices are insecure.The lack of robust key management systems,efficient identity authentication,low fault tolerance,and many other issues lead to IoT devices being easily targeted by attackers.In this paper we propose a new authentication protocol called Authenblue that improve the authentication process of IoT devices and Coordinators of Personal Area Network(CPANs)in an Industrial IoT(IIoT)environment.This study proposed Authenblue protocol as a new Blockchainbased authentication protocol.To enhance the authentication process and make it more secure,Authenblue modified the way of generating IIoT identifiers and the shared secret keys used by the IIoT devices to raise the efficiency of the authentication protocol.Authenblue enhance the authentication protocol that other models rely on by enhancing the approach used to generate the User Identifier(UI).The UI values changed from being static values,sensors MAC addresses,to be generated values in the inception phase.This approach makes the process of renewing the sensor keys more secure by renewing their UI values instead of changing the secret key.In this study,Authenblue has been simulated in the Network Simulator 3(NS3).Simulation results show an improved performance compared to the related work.Rachid Zagrouba Asayel AlAbdullatif Kholood AlAjaji Norah Al-Serhani Fahd Alhaidari Abdullah Almuhaideb Atta-ur-Rahman 2021Computers, Materials & Continua2021,,4:0
16ARGUS: Interactive visual analysis of disruptions in smartphone-detected Bio-Behavioral Rhythms显示文摘Human Bio-Behavioral Rhythms(HBRs)such as sleep-wake cycles(Circadian Rhythms),and the degree of regularity of sleep and physical activity have important health ramifications.Ubiquitous devices such as smartphones can sense HBRs by continuously analyzing data gathered passively by built-in sensors to discover important clues about the degree of regularity and disruptions in behavioral patterns.As human behavior is complex and smartphone data is voluminous with many channels(sensor types),it can be challenging to make meaningful observations,detect unhealthy HBR deviations and most importantly pin-point the causes of disruptions.Prior work has largely utilized computational methods such as machine and deep learning approaches,which while accurate,are often not explainable and present few actionable insights on HBR patterns or causes.To assist analysts in the discovery and understanding of HBR patterns,disruptions and causes,we propose ARGUS,an interactive visual analytics framework.As a foundation of ARGUS,we design an intuitive Rhythm Deviation Score(RDS)that analyzes users’smartphone sensor data,extracts underlying twenty-four-hour rhythms and quantifies their degree of irregularity.This score is then visualized using a glyph that makes it easy to recognize disruptions in the regularity of HBRs.ARGUS also facilitates deeper HBR insights and understanding of causes by linking multiple visualization panes that are overlaid with objective sensor information such as geo-locations and phone state(screen locked,charging),and user-provided or smartphone-inferred ground truth information.This array of visualization overlays in ARGUS enables analysts to gain a more comprehensive picture of HBRs,behavioral patterns and deviations from regularity.The design of ARGUS was guided by a goal and task analysis study involving an expert versed in HBR and smartphone sensing.To demonstrate its utility and generalizability,two different datasets were explored using ARGUS and our use cases and designs were strongly validated in evaluation sessions with expert and non-expert users.Hamid Mansoor Walter Gerych Abdulaziz Alajaji Luke Buquicchio Kavin Chandrasekaran Emmanuel Agu Elke Rundensteiner 2021Visual Informatics2021,5,3:0
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