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Prof. Dr. Sungho Sim
Semyung University

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Research Keywords & Expertise

0 ICT
0 Software Engineering
0 Revers engineering
0 IoT communication technologies
0 application using IoT

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Short Biography

Sungho Sim received a Ph.D. degree from KYUNG HEE University, Seoul, in 2012. He has been a professor atthe College of General Education, Semyung University, Korea, since 2013. His research interests include IoT, web service, meta-data, QoS, component-based software development, and software engineering

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Original paper
Published: 07 June 2021 in Personal and Ubiquitous Computing
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Recently, virus diseases, such as SARS-CoV, MERS-CoV, and COVID-19, continue to emerge and pose a severe public health problem. These diseases threaten the lives of many people and cause serious social and economic losses. Recent developments in information technology (IT) and connectivity have led to the emergence of Internet of Things (IoT) and Artificial Intelligence (AI) applications in many industries. These industries, where IoT and AI together are making significant impacts, are the healthcare and the diagnosis department. In addition, by actively communicating with smart devices and various biometric sensors, it is expanding its application fields to telemedicine, healthcare, and disease prevention. Even though existing IoT and AI technologies can enhance disease detection, monitoring, and quarantine, their impact is very limited because they are not integrated or applied rapidly to the emergence of a sudden epidemic. Especially in the situation where infectious diseases are rapidly spreading, the conventional methods fail to prevent large-scale infections and block global spreads through prediction, resulting in great loss of lives. Therefore, in this paper, various sources of infection information with local limitations are collected through virus disease information collector, and AI analysis and severity matching are performed through AI broker. Finally, through the Integrated Disease Control Center, risk alerts are issued, proliferation block letters are sent, and post-response services are provided quickly. Suppose we further develop the proposed integrated virus disease control model. In that case, it will be possible to proactively detect and warn of risk factors in response to infectious diseases that are rapidly spreading worldwide and strengthen measures to prevent spreading of infection in no time.

ACS Style

Sungho Sim; Myeongyun Cho. Convergence model of AI and IoT for virus disease control system. Personal and Ubiquitous Computing 2021, 1 -11.

AMA Style

Sungho Sim, Myeongyun Cho. Convergence model of AI and IoT for virus disease control system. Personal and Ubiquitous Computing. 2021; ():1-11.

Chicago/Turabian Style

Sungho Sim; Myeongyun Cho. 2021. "Convergence model of AI and IoT for virus disease control system." Personal and Ubiquitous Computing , no. : 1-11.

Journal article
Published: 18 May 2021 in Sensors
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As the development of IoT technologies has progressed rapidly recently, most IoT data are focused on monitoring and control to process IoT data, but the cost of collecting and linking various IoT data increases, requiring the ability to proactively integrate and analyze collected IoT data so that cloud servers (data centers) can process smartly. In this paper, we propose a blockchain-based IoT big data integrity verification technique to ensure the safety of the Third Party Auditor (TPA), which has a role in auditing the integrity of AIoT data. The proposed technique aims to minimize IoT information loss by multiple blockchain groupings of information and signature keys from IoT devices. The proposed technique allows IoT information to be effectively guaranteed the integrity of AIoT data by linking hash values designated as arbitrary, constant-size blocks with previous blocks in hierarchical chains. The proposed technique performs synchronization using location information between the central server and IoT devices to manage the cost of the integrity of IoT information at low cost. In order to easily control a large number of locations of IoT devices, we perform cross-distributed and blockchain linkage processing under constant rules to improve the load and throughput generated by IoT devices.

ACS Style

Sung-Ho Sim; Yoon-Su Jeong. Multi-Blockchain-Based IoT Data Processing Techniques to Ensure the Integrity of IoT Data in AIoT Edge Computing Environments. Sensors 2021, 21, 3515 .

AMA Style

Sung-Ho Sim, Yoon-Su Jeong. Multi-Blockchain-Based IoT Data Processing Techniques to Ensure the Integrity of IoT Data in AIoT Edge Computing Environments. Sensors. 2021; 21 (10):3515.

Chicago/Turabian Style

Sung-Ho Sim; Yoon-Su Jeong. 2021. "Multi-Blockchain-Based IoT Data Processing Techniques to Ensure the Integrity of IoT Data in AIoT Edge Computing Environments." Sensors 21, no. 10: 3515.

Journal article
Published: 14 March 2021 in Sensors
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As cloud technology advances, devices such as IoT (Internet of Things) are being utilized in various areas ranging from transportation, manufacturing, energy, automation, space, defense, and healthcare. As the number of IoT devices increases, the safety of IoT information, which is vulnerable to cyber attacks, is emerging as an important area of interest in distributed cloud environments. However, integrity techniques are not guaranteed to easily identify the integrity threats and attacks on IoT information operating in the distributed cloud associated with IoT systems and CPS (Cyber-Physical System). In this paper, we propose a blockchain-based integrity verification technique in which large amounts of IoT information processed in distributed cloud environments can be guaranteed integrity in security threats related to IoT systems and CPS. The proposed technique aims to ensure the integrity of IoT information by linking information from IoT devices belonging to subgroups in distributed cloud environments to information from specific non-adjacent IoT devices and blockchain. This is because existing techniques rely on third-party organizations that the data owner can trust to verify the integrity of the data. The proposed technique identifies IoT information by connecting the paths of IoT pre- and subsequent blocks into block chains so that synchronization can be achieved between subgroups in distributed cloud environments. Furthermore, the proposed technique uses probabilistic similarity information between IoT information blocks to react flexibly to subgroups that constitute distributed clouds so that IoT information blocks are not exploited maliciously by third parties. As a result of performance evaluation, the proposed technique averaged 12.3% improvement in integrity processing time over existing techniques depending on blockchain size. Furthermore, the proposed technique has to hash the IoT information that constitutes a subgroup with probability-linked information, validating the integrity of large-capacity IoT information, resulting in an average of 8.8% lower overhead than existing techniques. In addition, the proposed technique has an average improvement of 14.3% in blockchain-based integrity verification accuracy over existing techniques, depending on the hash chain length.

ACS Style

Yoon-Su Jeong; Sung-Ho Sim. Hierarchical Multipath Blockchain Based IoT Information Management Techniques for Efficient Distributed Processing of Intelligent IoT Information. Sensors 2021, 21, 2049 .

AMA Style

Yoon-Su Jeong, Sung-Ho Sim. Hierarchical Multipath Blockchain Based IoT Information Management Techniques for Efficient Distributed Processing of Intelligent IoT Information. Sensors. 2021; 21 (6):2049.

Chicago/Turabian Style

Yoon-Su Jeong; Sung-Ho Sim. 2021. "Hierarchical Multipath Blockchain Based IoT Information Management Techniques for Efficient Distributed Processing of Intelligent IoT Information." Sensors 21, no. 6: 2049.

Research article
Published: 05 December 2018 in The International Journal of Electrical Engineering & Education
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The fourth Industrial Revolution is rapidly growing due to the development of ICT and the need for organic linkage in the industry. The Internet of Things (IoT), in which objects and objects from active relationships such as sensing, networking and mutual cooperation without human intervention is the core technology of the fourth Industrial Revolution, which can be linked to various industrial fields. As the IoT environment spreads, IoT devices are continuously increasing in various industries. IoT devices connected to the Internet are as different as each application environment. Many information is derived from the interaction between an IoT device and a device or between a human and an IoT device, as well as devices that provide simple data such as sensing. This paper proposes a support method to enable extended service search when users search for services using information generated in IoT environment. The existing service discovery method focuses on the method by which the user selects the service based on the simple service information disclosed by the service provider. In order to solve the problem of existing service discovery method, this study proposed a support method that enables users to search service discovery flexibly even when using existing methods in service discovery in IoT environment. The proposed method provides a user-centered service search environment construction through a search method using user IoT information which was not considered in the existing service search. This makes up for the problem of service availability and provider-oriented service discovery through the establishment of a user service discovery environment.

ACS Style

Sungho Sim; Hanyong Choi. A study on the service discovery support method in the IoT environments. The International Journal of Electrical Engineering & Education 2018, 57, 85 -96.

AMA Style

Sungho Sim, Hanyong Choi. A study on the service discovery support method in the IoT environments. The International Journal of Electrical Engineering & Education. 2018; 57 (1):85-96.

Chicago/Turabian Style

Sungho Sim; Hanyong Choi. 2018. "A study on the service discovery support method in the IoT environments." The International Journal of Electrical Engineering & Education 57, no. 1: 85-96.

Journal article
Published: 01 January 2018 in Medico-Legal Update
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ACS Style

Hanyong Choi; Sungho Sim. A study on Change of Optimized Asset Complexity. Medico-Legal Update 2018, 18, 354 .

AMA Style

Hanyong Choi, Sungho Sim. A study on Change of Optimized Asset Complexity. Medico-Legal Update. 2018; 18 (1):354.

Chicago/Turabian Style

Hanyong Choi; Sungho Sim. 2018. "A study on Change of Optimized Asset Complexity." Medico-Legal Update 18, no. 1: 354.

Article
Published: 29 April 2017 in Cluster Computing
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IoT is a technology that provides service and shares information through connecting real objects through wireless and wired networks. Various services and information divided through IoT based environment device cooperation not only increases the quality of life in individuals but also has become an important issue in the development of various industrial fields. IoT service development appropriate for applicable industries and personal requirements is required. This study suggests a system that can provide a web service list appropriate for the user when selecting service by using a concept of applying and collecting various forms of information created in IoT environment while using web service. The suggested method applies user IoT information with traditional web service search to include the advantages of the existing search methods and services that the user needs. Thus, user friendly service selection that can increase the efficiency of service use is created compared with the traditional provider centered service provision environment. The study defines usable service properties and derives IoT service components. Based on this, we suggest an IoT information based web service search system and algorithm. Diverse user information models collected and created through IoT collector are provided with user requirements during service selection and based on user IoT information, useful service for individual user environment can be discovered and provided. The suggested method utilizes information models created through IoT device elements to suggest a system model that can be utilized for various requirements and rapidly changing services.

ACS Style

Sungho Sim; Hanyong Choi. A study on web services discovery system based on the internetof things user information. Cluster Computing 2017, 21, 1151 -1160.

AMA Style

Sungho Sim, Hanyong Choi. A study on web services discovery system based on the internetof things user information. Cluster Computing. 2017; 21 (1):1151-1160.

Chicago/Turabian Style

Sungho Sim; Hanyong Choi. 2017. "A study on web services discovery system based on the internetof things user information." Cluster Computing 21, no. 1: 1151-1160.

Journal article
Published: 23 December 2016 in Indian Journal of Science and Technology
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Objectives: To disassemble design information into parts assets to solve the problem of software production method and to reduce duplicate development costs due to domain changes. Methods/Statistical Analysis: To solve this, the study tries to create parts asset for reusing domain design information in the design process that is independent to the development environment. Findings: Also in the design process, predesigned design information to apply reuse of parts assets and the reuse of this architecture level that can accommodate this is difficult. Therefore to reuse design information in the design process, there needs to be ed architecture information platform independent from development environment. Also it needs to be based on well-designed architecture that can support design of application domain. Therefore the study used a DMI structure that can formally express the design information of architecture level platform and application domain. Therefore the study defined a method of creating component assets of design information to store architecture design designed by designer in DMI as parts assets. Improvements/Applications: Thereby it was made possible that design information of designer is configured as PLE asset in the extractive method and also it was made possible to synthesize and reuse.

ACS Style

Hanyong Choi; Sungho Sim. Decomposition of Reusable Architecture Asset. Indian Journal of Science and Technology 2016, 9, 1 .

AMA Style

Hanyong Choi, Sungho Sim. Decomposition of Reusable Architecture Asset. Indian Journal of Science and Technology. 2016; 9 (46):1.

Chicago/Turabian Style

Hanyong Choi; Sungho Sim. 2016. "Decomposition of Reusable Architecture Asset." Indian Journal of Science and Technology 9, no. 46: 1.

Journal article
Published: 30 June 2016 in Indian Journal of Science and Technology
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ACS Style

Sungho Sim; Hanyong Choi. A Study on the Web Service of Cloud Environment based on User Requirements. Indian Journal of Science and Technology 2016, 9, 1 .

AMA Style

Sungho Sim, Hanyong Choi. A Study on the Web Service of Cloud Environment based on User Requirements. Indian Journal of Science and Technology. 2016; 9 (24):1.

Chicago/Turabian Style

Sungho Sim; Hanyong Choi. 2016. "A Study on the Web Service of Cloud Environment based on User Requirements." Indian Journal of Science and Technology 9, no. 24: 1.

Journal article
Published: 08 September 2015 in Wireless Personal Communications
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DOM and SAX are used usually in form parser for XML document processing. This study designed method of markup language using DOM tree extension and advantage about fast accessibility for XML document. Did so that can design simple type and complex type DOM tree use XML schema of DOM base and offer variety creating markup language. And markup language generation about MetaData that use DOM form improve reusability ratio of markup language because it is possible detailed data type expression and classified unit element.

ACS Style

Hanyong Choi; Sungho Sim. A Study on Efficiency of Markup Language Using DOM Tree. Wireless Personal Communications 2015, 86, 143 -163.

AMA Style

Hanyong Choi, Sungho Sim. A Study on Efficiency of Markup Language Using DOM Tree. Wireless Personal Communications. 2015; 86 (1):143-163.

Chicago/Turabian Style

Hanyong Choi; Sungho Sim. 2015. "A Study on Efficiency of Markup Language Using DOM Tree." Wireless Personal Communications 86, no. 1: 143-163.