• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.4
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• pp.27-36
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• 2018

In this paper, we design and implement a real time IoT messaging system that can collect location information of moving vehicles and pedestrians in real time using MQTT protocol and provides location based information service in administrative area. We implemented MQTT based IoT device for vehicle location information collection and communication and MQTT based smartphone application for pedestrian location information service. IoT clients can send messages to the server in administrative units by using the MQTT Topic which is equal to administrative names. The SLIMS (Seoul Location based IoT Messaging System) implemented in this study is able to analyze the real time traffic volume of pedestrians and vehicles by tracking clients. It also can deliver messages to clients based on coordinate range. SLIMS can be used as a real-time location-based information service for large-scale IoT devices such as real-time flow population and vehicle traffic analysis and location-based message delivery.

• Journal of Information Technology Services
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• v.14 no.1
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• pp.217-236
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• 2015

The purpose of this study is to propose the effective location-based IoT service acceptance model by integrating ELM (Elaboration Likelihood Model) with UTAUT (Unified Theory of Acceptance and Use of Technology). The Partial Least Squares was used to analyze the causal relationships with respect to the effects of central route and peripheral route on acceptance intention. The results shows that central route has more significant impacts on perceived usefulness than peripheral route and CFIP (Concern for Information Privacy) weaken the relationship of acceptance intention and perceived usefulness. Our findings indicate some meaningful implications in the acceptance research of IOT services. First, we noted that the easy of use significantly affects the adoption of location-based IoT service. Furthermore, it is important to build the secured mechanism of privacy protection to adopt of location-based IoT service. Second, we tried to attempt the newly integrated approach to technical acceptance using UTAUT's variables and ELM by Petty and Cacioppo (1986). Finally this research empirically analyzed the adoption case of location-based IoT service which is not well-known yet within our country.

• Information Systems Review
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• v.15 no.3
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• pp.129-139
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• 2013

The Internet of Things (or IoT for short) which refers to uniquely identifiable objects and their virtual representations in an Internet-like structure is to be reality today. The amount of data on IoT is expected to increase abruptly and there are several key issues like usefulness interoperability between multiple distributes systems, services and databases. In this paper a methodology is proposed to realize a recently developed cloud service model, Contents as a Service (CaaS), which is contents delivery model referred to as 'on-demand contents'. In the proposed method, the global object identification, ePosition, comprising the structured form of two sorts of text strings with a separation symbol like # is applied to identify a specific content and registered with the content at the same server. It is easy-to-realize and effective to solve the interoperability problem systematically and logically. Some APIs for the proposed CaaS service are to be converged to provide some upgraded cloud service model such as 'CaaS supported SaaS' and 'CaaS supported PaaS'.

• International Journal of Human Ecology
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• v.7 no.1
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• pp.25-36
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• 2006

The purpose of this study was to investigate and compare visiting intentions by positive and negative Word-of-Mouth (WOM) and/or information of beauty shop between female college students and adult women. Data were collected from 500 consumers (250 from female students and 250 adult women) and was analyzed by using frequencies, factor analysis, t-tests and multiple regression utilizing SPSS/PC+. The findings revealed positive experience factors to prudent service, time saving/consideration for customer's position, kindness/operating system in waiting time, added services, employees' attitudes, excellent beauty and response skill, rational price and recall system/remind for customer. The negative experiences were inconsistent service, operators' convenient service, irrational price/poor skill/non-recall, non-customer central service, inappropriate face-to-face management to customer. Also, the results showed that the positive WOM information such as prudent service, time saving/consideration for customer's position, excellent beauty and response skill and rational price had influence on the visiting intention in case of female college students. The negative WOM information like non-customer central service, had influence on the visiting intention in cases of adult women.

• Proceedings of the Korea Contents Association Conference
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• 2003.11a
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• pp.321-327
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• 2003

In the era of global competition, international competitiveness depends greatly on the prompt provision of overseas information. In the field of Science and Technology, it is very important to catch the research or technical trends of advanced countries in time. In this paper, we explain the process of collecting, evaluating, and distributing KISTI's overseas S&T trend information service. We also explain a quality management system which evaluates the quality of the information without loosing promptness.

• Journal of Information Management
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• v.37 no.4
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• pp.125-139
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• 2006

The advent of the internet has caused a number of changes in production and dissemination of science and technology information(STI). STI was mainly produced in the form of publication before the advent of the internet. The popularization of the internet, however, has induced the mass production and distribution of STI through the internet. In consequence, the importance and usefulness of on-line STI have become on a level with those of published STI. The rapid growth of quantity and quality of on-line STI forces information service organizations try their best for improving the service satisfaction. In an effort to improve the satisfaction, researchers on information management examined the classification of information resources by exploring the counterparts of bibliography and/or web information service. We examined the national standard of the classification related to science and technology and proposed a practical scheme for the classification of on-line STI resources.

• Journal of Korea Society of Digital Industry and Information Management
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• v.17 no.4
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• pp.13-28
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• 2021

The purpose of this study is to demonstrate the causal relationship between exhibition acceptance through the quality factors of Internet of Things (IoT) exhibition services and ease and usefulness of technology acceptance factors for domestic exhibition visitors. Through this, the company intends to present effective and efficient development plans in the IoT exhibition industry. Therefore, we present a research model that applies DeLone & McLean's quality factors to key variables in the information system success model and ease and usefulness in the Technology Acceptance Model (TAM). A survey was conducted on ordinary people with experience using the Internet of Water (IoT) exhibition service. The survey was conducted for two weeks from July 15 to August 20, 2021. A total of 276 surveys were used for data analysis during this period. The hypothesis results related to the information system success model of the Internet of Things (IoT) exhibition show that, first, system quality had no significant effect on usefulness, but significantly on ease. Second, information quality has been shown to have a significant effect on usability and ease. Third, service quality has been shown to have a significant impact on usability and ease. Fourth, usefulness has been shown to have a significant effect on exhibition acceptance. Fifth, ease has been shown to have a significant effect on usability. Sixth, ease was shown to have a significant effect on exhibition acceptance.

• Journal of information and communication convergence engineering
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• v.16 no.2
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• pp.93-98
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• 2018

The Internet of Things (IoT) is a form of the emerging 4th industry in the 5G era. IoT is expected to develop naturally in our daily life in the 5G era in which high-speed communication will be completed. Along with the rise of IoT, concerns about security and malicious attacks are also increasing. This paper examines DoS attacks, which are one of the representative security threats of IoT and proposes a local detection and blocking system that are suitable for response to such attacks. First, systems of the LoRaWAN type, which are most actively researched in the IoT system field and DoS attacks that can occur in such systems were examined. Then, the inverse order tree algorithm using regional characteristics was designed as a cluster analysis form. Finally, a system capable of defending denial-of-service attacks in the 5G IoT system using local detection and blocking with the Euclidean distance was designed.

• Journal of the Institute of Electronics and Information Engineers
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• v.52 no.3
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• pp.3-12
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• 2015

Recently, various studies have been attempted to provide a biological information monitoring service through integrating with the web service. The medical information transmission standard ISO/IEEE 11073 PHD defines the optimized exchange protocol ISO/IEEE 11073-20601 based on the No-IP to exchange the biometric information between the ISO/IEEE 11073 agent and the manager. It's system structure based on the No-IP using ISO/IEEE 11073-20601 is not suitable for providing a remote biological information monitoring services. That is because it is difficult to provide to control and manage the biological information measurement devices, which have installed IP protocol stack at the remote. Furthermore, ACSE and CMDISE in ISO/IEEE 11073-20601 are not suitable to provide U-healthcare services based on IoT because they are complicated and difficult to implement it caused by the structural complexity. In order to solve the problems, in this paper, we propose the biological information monitoring architecture based on ISO/IEEE 11073 DIM/REST of IoT environment to provide the biological information monitoring service based on IoT. To do this, we designed biological information monitoring system architecture based on IoT and the message exchange protocol of ISO/IEEE 11073 DIM/REST between the ISO/IEEE 11073 agent and the ISO/IEEE 11073 manager. In order to verify the realistic possibility of the proposed system architecture, we developed the service prototype.

• Annual Conference of KIPS
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• 2018.10a
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• pp.1001-1004
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• 2018

As the industry generates a lot of data, it is increasingly dependent on the IoT platform. For this reason, the performance and anomaly detection of IoT platform is becoming an important factor. In this paper, we propose a system model of IoT platform that detects device anomaly without performance issue. The proposed system uses Micro Batch which calculates the data transmission cycle to provide Soft Real-time service. In the industry, it was difficult to collect abnormal data, so the Hotelling's $T^2$ model was applied to the data analysis experiment. And the Hotelling's $T^2$ model successfully detected anomalies.