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Industry 4.0: Architecture and Equipment Revolution 认领 引用 被引量：6
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作者 Ahmed Bashar Fakhri Saleem Latteef Mohammed +4 位作者 Imran Khan Ali Safaa Sadiq Basem Alkazemi Prashant Pillai Bong Jun Choi 《Computers, Materials & Continua》 SCIE EI 2021年第2期1175-1194,共20页
The development of science and technology has led to the era of Industry 4.0.The core concept is the combination of“material and informationization”.In the supply chain and manufacturing process,the“material”of th... The development of science and technology has led to the era of Industry 4.0.The core concept is the combination of“material and informationization”.In the supply chain and manufacturing process,the“material”of the physical entity world is realized by data,identity,intelligence,and information.Industry 4.0 is a disruptive transformation and upgrade of intelligent industrialization based on the Internet-of-Things and Big Data in traditional industrialization.The goal is“maximizing production efficiency,minimizing production costs,and maximizing the individual needs of human beings for products and services.”Achieving this goal will surely bring about a major leap in the history of the industry,which will lead to the“Fourth Industrial Revolution.”This paper presents a detailed discussion of industrial big data,strategic roles,architectures,characteristics,and four types of innovative business models that can generate profits for enterprises.The key revolutionary aspect of Industry 4.0 is explained,which is the equipment revolution.Six important attributes of equipment are explained under the Industry 4.0 perspective. 展开更多
关键词 Industry 4.0 big data smart manufacturing business model equipment revolution
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Design, Implementation and Verification of Topology Network Architecture of Smart Home Tree 认领 引用
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作者 Youbang Guan Bong Jun Choi 《Computers, Materials & Continua》 SCIE EI 2021年第8期2399-2411,共13页
Smart home technology provides consumers with network connectivity,automation or enhanced services for home devices.With the Internet of Things era,a vast data flow makes business platforms have to own the same comput... Smart home technology provides consumers with network connectivity,automation or enhanced services for home devices.With the Internet of Things era,a vast data flow makes business platforms have to own the same computing power to match their business services.It achieves computing power through implementing big data algorithms deployed in the cloud data center.However,because of the far long geographical distance between the client and the data center or the massive data capacity gap,potentially high latency and high packet loss will reduce the usability of smart home systems if service providers deploy all services in the cloud data center.Edge computing and fog computing can significantly improve the utilization of network resources and reconstruct the network architecture for the user’s home.This article enables a fog resource-based resource allocation management technology.It provides a method that can more reasonably allocate network resources through a virtualized middle-tier method to ensure low response time and configure Quality of Service to ensure the use of delay-sensitive critical applications to improve the reliability of smart home communication system.Besides,the proposed method has is tested and verified by adjusting the variables of the network environment.We realize the optimization of resource allocation of client network without changing the hardware of client. 展开更多
关键词 Topology network smart home tree resource allocation internet of things
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A CAWL handler for context-aware composite workflow services 认领 引用
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作者 Yongseong Cho Jongsun Choi Jaeyoung Choi 《Journal of Measurement Science and Instrumentation》 CAS 2013年第4期370-375,共6页
In distributed computing environment,workflow technologies have been continuously developed.Recently,there is an attempt to apply these technologies to context-aware services in ubiquitous computing environment.The mi... In distributed computing environment,workflow technologies have been continuously developed.Recently,there is an attempt to apply these technologies to context-aware services in ubiquitous computing environment.The middleware,which offers services in such environments,should support the automation services suited for the user using various types of situational information around the user.In this paper,based on context-aware workflow language(CAWL),we propose a CAWL based composite workflow handler for supporting composite workflow services,which can integrate more than two service flows and handle them.The test results shows that the proposed CAWL handler can provide the user with the composite workflow services to cope with various demands on a basis of a scenario document founded on CAWL. 展开更多
关键词 ubiquitous computing context-aware composite workflow context-aware workflow language （CAWL） handlerDocument code：AArticle ID：1674-8042（2013）04-0370-06
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Optimal Resource Allocation for NOMA Wireless Networks 认领 引用 被引量：1
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作者 Fahad R.Albogamy M.A.Aiyashi +2 位作者 Fazirul Hisyam Hashim Imran Khan Bong Jun Choi 《Computers, Materials & Continua》 SCIE EI 2023年第2期3249-3261,共13页
The non-orthogonal multiple access(NOMA)method is a novel multiple access technique that aims to increase spectral efficiency(SE)and accommodate enormous user accesses.Multi-user signals are superimposed and transmitt... The non-orthogonal multiple access(NOMA)method is a novel multiple access technique that aims to increase spectral efficiency(SE)and accommodate enormous user accesses.Multi-user signals are superimposed and transmitted in the power domain at the transmitting end by actively implementing controllable interference information,and multi-user detection algorithms,such as successive interference cancellation(SIC),are performed at the receiving end to demodulate the necessary user signals.Although its basic signal waveform,like LTE baseline,could be based on orthogonal frequency division multiple access(OFDMA)or discrete Fourier transform(DFT)-spread OFDM,NOMA superimposes numerous users in the power domain.In contrast to the orthogonal transmission method,the nonorthogonal method can achieve higher spectrum utilization.However,it will increase the complexity of its receiver.Different power allocation techniques will have a direct impact on the system’s throughput.As a result,in order to boost the system capacity,an efficient power allocation mechanism must be investigated.This research developed an efficient technique based on conjugate gradient to solve the problem of downlink power distribution.The major goal is to maximize the users’maximum weighted sum rate.The suggested algorithm’s most notable feature is that it converges to the global optimal solution.When compared to existing methods,simulation results reveal that the suggested technique has a better power allocation capability. 展开更多
关键词 Non-orthogonalmultiple access wireless networks power domain 5G networks
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An Optimal Method for Supply Chain Logistics Management Based on Neural Network 认领 引用
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作者 Abdallah Abdallah Mohammed Dauwed +3 位作者 Ayman A.Aly Bassem F.Felemban Imran Khan Bong Jun Choi 《Computers, Materials & Continua》 SCIE EI 2022年第11期4311-4327,共17页
From raw material storage through final product distribution,a cold supply chain is a technique in which all activities are managed by temperature.The expansion in the number of imported meat and other comparable comm... From raw material storage through final product distribution,a cold supply chain is a technique in which all activities are managed by temperature.The expansion in the number of imported meat and other comparable commodities,as well as exported seafood has boosted the performance of cold chain logistics service providers.On the basis of the standard basicpursuit(BP)neural network,a rough BP particle swarm optimization(PSO)neural network model is constructed by combining rough set and particle swarm algorithms to aid cold chain food production enterprises in quickly picking the best cold chain logistics service providers.To reduce duplicate information in the original data and make the input index more compact,the model employs rough set.Instead of using gradient descent to train the weights of the neural network,particle swarm optimization is utilized to ensure that the output results are not readily caught in local minima and that the network’s generalization capacity is improved.Finally,an example is presented to demonstrate the model’s validity and viability.The findings reveal that the model’s prediction error is 40.94 percent lower than the BP neural network model,and the prediction result is more accurate and dependable,providing a new technique for cold chain food production companies to swiftly pick the best cold chain logistics service provider. 展开更多
关键词 Supply-chain management industrial enterprises neural network optimization
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A Joint Algorithm for Resource Allocation in D2D 5G Wireless Networks 认领 引用
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作者 Fahd N.Al-Wesabi Imran Khan +4 位作者 Mohammad Alamgeer Ali M.Al-Sharafi Bong Jun Choi Abdallah Aldosary Ehab Mahmood Mohammad 《Computers, Materials & Continua》 SCIE EI 2021年第10期301-317,共17页
With the rapid development of Internet technology,users have an increasing demand for data.The continuous popularization of traffic-intensive applications such as high-definition video,3D visualization,and cloud compu... With the rapid development of Internet technology,users have an increasing demand for data.The continuous popularization of traffic-intensive applications such as high-definition video,3D visualization,and cloud computing has promoted the rapid evolution of the communications industry.In order to cope with the huge traffic demand of today’s users,5G networks must be fast,flexible,reliable and sustainable.Based on these research backgrounds,the academic community has proposed D2D communication.The main feature of D2D communication is that it enables direct communication between devices,thereby effectively improve resource utilization and reduce the dependence on base stations,so it can effectively improve the throughput of multimedia data.One of the most considerable factor which affects the performance of D2D communication is the co-channel interference which results due to the multiplexing of multiple D2D user using the same channel resource of the cellular user.To solve this problem,this paper proposes a joint algorithm time scheduling and power control.The main idea is to effectively maximize the number of allocated resources in each scheduling period with satisfied quality of service requirements.The constraint problem is decomposed into time scheduling and power control subproblems.The power control subproblem has the characteristics of mixed-integer linear programming of NP-hard.Therefore,we proposed a gradual power control method.The time scheduling subproblem belongs to the NP-hard problem having convex-cordinality,therefore,we proposed a heuristic scheme to optimize resource allocation.Simulation results show that the proposed algorithm effectively improved the resource allocation and overcome the co-channel interference as compared with existing algorithms. 展开更多
关键词 6G wireless networks mobile communication linear programming
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Towards delivery of situational information in distributed environments 认领 引用
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作者 孙成强 Yongseong Cho +1 位作者 Jongsun Choi Jaeyoung Choi 《Journal of Measurement Science and Instrumentation》 CAS 2013年第3期282-285,共4页
In the distributed environment,robots should be able to provide users with adaptive services automatically according to the situational information changing dynamically which is obtained from both users and their envi... In the distributed environment,robots should be able to provide users with adaptive services automatically according to the situational information changing dynamically which is obtained from both users and their environments.The workflow depends on situational information obtained from physical environments and provides context-aware services automatically based on the information retrieved.And the workflow in the business processes and the distributed computing environments have supported the automation of services by connecting tasks.The workflow needs to specify ubiquitous situational information as state-transition constraints.However,the delivery and use of sensor data in the workflow is a difficult problem for the robot system.In order to bridge the gap between applications and low-level constructs and to acquire raw situational information for the execution of the context-aware workflow in the robot systems,this paper presents an approach which can achieve the sensor data transmission between a sensing server and a robot system easily. 展开更多
关键词 publish/subscribe robot service workflow situational information distributed environmentsCLC number：TN919.72 Document code：AArticle ID：1674-8042（2013）03-0282-04
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Integrated management system of agro-fishery products based on QR-code 认领 引用 被引量：1
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作者 Namjin Bae Yongyun Cho +1 位作者 Jongsun Choi Jaeyoung Choi 《Journal of Measurement Science and Instrumentation》 CAS 2013年第3期252-255,共4页
Recently,both the importance and awareness relating to food safety relating to agrochemicals,chemical fertilizers,the pollution of ecosystem and unwholesome foods are growing rapidly.For the same reason,the purchaser&... Recently,both the importance and awareness relating to food safety relating to agrochemicals,chemical fertilizers,the pollution of ecosystem and unwholesome foods are growing rapidly.For the same reason,the purchaser's curiosity increases to know about the production process which can be accomplished by production traceability system.The traceability system can store and superintend the specific attribute information about products regarding the productive centre,producer and production finish data.The products undergo various circulation processes and they are being managed by individually constructed traceability system.Thus,it is difficult for the producer and the consumer to guarantee the safety from transpirable issues about the falsification of production traceability because the traceability information can be re-produced by forging through various ways.So in this paper,we proposed a system for integrated management of agro-fishery products based on quick response code(QR-code)for forgery prevention which may help to solve these issues.The proposed system makes QR-code using production information provided by producer.And then it is provided to the distributor and the consumer through integrated service model using the QR-code.Therefore,this system make sure to provide the same production traceability about the products to the distributor and the consumer and always keeps both updated with the same information. 展开更多
关键词 quick response code （QR-code） production traceability traceability systemCLC number：TP391.44 Document code：AArticle ID：1674-8042（2013）03-0252-04
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Context-aware BPEL workflow system using aspect-oriented programming 认领 引用
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作者 Minsuk Kim Donggyu Kuak +1 位作者 Jongsun Choi Jaeyoung Choi 《Journal of Measurement Science and Instrumentation》 CAS 2012年第2期119-122,共4页
Business process execution language(BPEL)is a most recognized standard workflow language.However,it is difficult to be used in the ubiquitous system computing environment because it is difficult to describe the contex... Business process execution language(BPEL)is a most recognized standard workflow language.However,it is difficult to be used in the ubiquitous system computing environment because it is difficult to describe the context information in the selection of the flow through the branch.To solve this problem,we propose a new BPEL workflow system with context-awareness by using aspect-oriented programming(AOP).This system is composed of a BPEL system module and a weaving module using AOP for context-aware.The BPEL system module generates a BPEL workflow program.And the weaving module converts a context-aware mark-up language(CAML)document to the aspect-oriented program that is applied to context-aware code without modification of the existing BPEL document.We also define a new document form that is called CAML,which provides a context-aware that is not available in BPEL.The system can generate a context-aware workflow program.It is developed in a way that inserts context information using AOP to provide context-aware services. 展开更多
关键词 aspect-oriented programming(AOP) business process execution language(BPEL) context-aware workflow
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Automatic generation of context-aware workflow documents for ubiquitous robot services 认领 引用
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作者 Yongseong Cho Jongsun Choi Jaeyoung Choi 《Journal of Measurement Science and Instrumentation》 CAS 2012年第3期260-267,共8页
Intelligent robots in ubiquitous computing environment should be able to receive a variety of surrounding informa tion and provide users with appropriate services. A developer can describe the robot services that are ... Intelligent robots in ubiquitous computing environment should be able to receive a variety of surrounding informa tion and provide users with appropriate services. A developer can describe the robot services that are proper to users＇ envir onments by using his or her various environments, and process them through the execution engine. However, it is difficult for a developer to describe and develop robot services, who knows all surrounding information which is called context infor mation. If there is a method for describing and documenting robot services in intuitive expressions, that is to use graphical user interfaces（GUls）, it would be very helpful. This paper suggests that robot service developers describe robot services us ing intuitive GUls with contextawareness. And the services can be automatically generated into workflow documents. Robot services that robot service developers have made with intuitive GUIs can be automatically generated into workflow docu ments by using the object modeling technique（OMT）. Developers can describe robot services based on contextaware work flow language（CAWL ）. For testing, scenariobased robot services are described using CAWLbased development tool, and their workflow documents are automatically generated. 展开更多
关键词 ubiquitous robot service automatic generation context-aware workflow document(CAWL)
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Sex-specific Cutoff Values of Visceral Fat Area for Lean vs. Overweight/Obese Nonalcoholic Fatty Liver Disease in Asians 认领 引用 被引量：3
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作者 Sunyoung Lee Kyoung Won Kim Jeongjin Lee 《Journal of Clinical and Translational Hepatology》 SCIE 2022年第4期595-599,共5页
Background and Aims:Visceral obesity is a risk factor for nonalcoholic fatty liver disease(NAFLD).We investigated sex-specific optimal cutoff values for visceral fat area(VFA)associated with lean and overweight/obese ... Background and Aims:Visceral obesity is a risk factor for nonalcoholic fatty liver disease(NAFLD).We investigated sex-specific optimal cutoff values for visceral fat area(VFA)associated with lean and overweight/obese NAFLD in an Asian population.Methods:This retrospective study includ-ed 678 potential living liver donors(mean age,30.8±9.4 years;434 men and 244 women)who had undergone ab-dominal computed tomography(CT)imaging and liver bi-opsy between November 2016 and October 2017.VFA was measured using single-slice abdominal CT.NAFLD was eval-uated by liver biopsy(≥5%hepatic steatosis).Receiver op-erating characteristic curve analysis was used to determine cutoff values for VFA associated with lean(body mass index[BMI]<23 kg/m2)and overweight/obese(BMI≥23 kg/m2)NAFLD.Results:Area under the curve(AUC)values with 95%confidence intervals(CI)for VFA were 0.82(95%CI,0.75-0.88)for lean and 0.74(95%CI,0.69-0.79)for over-weight/obese men with NAFLD.The AUC values were 0.67(95%CI,0.58-0.75)for lean and 0.71(95%CI,0.62-0.80)for overweight/obese women with NAFLD.The cutoff values for VFA associated with lean NAFLD were 50.2 cm2 in men and 40.5 cm2 in women.The optimal cutoff values for VFA associated with overweight/obese NAFLD were 100.6 cm2 in men and 68.0 cm2 in women.Conclusions:Sex-specific cutoff values for VFA may be useful for identifying subjects at risk of lean and overweight/obese NAFLD. 展开更多
关键词 Hepatic steatosis Adipose tissue Liver biopsy Computed tomography
Towards a respondent-preferred k_i-anonymity model 认领 引用
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作者 Kok-Seng WONG Myung Ho KIM 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2015年第9期720-731,共12页
Recently, privacy concerns about data collection have received an increasing amount of attention. In data collection process, a data collector （an agency） assumed that all respondents would be comfortable with submi... Recently, privacy concerns about data collection have received an increasing amount of attention. In data collection process, a data collector （an agency） assumed that all respondents would be comfortable with submitting their data if the published data was anonymous. We believe that this assumption is not realistic because the increase in privacy concerns causes some re- spondents to refuse participation or to submit inaccurate data to such agencies. If respondents submit inaccurate data, then the usefulness of the results from analysis of the collected data cannot be guaranteed. Furthermore, we note that the level of anonymity （i.e., k-anonymity） guaranteed by an agency cannot be verified by respondents since they generally do not have access to all of the data that is released. Therefore, we introduce the notion of ki-anonymity, where ki is the level of anonymity preferred by each respondent i. Instead of placing full trust in an agency, our solution increases respondent confidence by allowing each to decide the preferred level of protection. As such, our protocol ensures that respondents achieve their preferred kranonymity during data collection and guarantees that the collected records are genuine and useful for data analysis. 展开更多
关键词 Anonymous data collection Respondent-preferred privacy protection k-anonymity
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