• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.5
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• pp.825-836
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• 2019

The drone-type base station will be an optimal platform as a way of information sharing for efficient operation of the military force due to their high network flexibility. It is expected that the characteristics of the drone-type base station which would freely adjust the altitude can be used to offset the propagation attenuation characteristics of the millimeter-wave frequency band by securing the stable Line of Sight. In this paper, we proposed a framework for evaluation drone-type base station that can be utilized as a future military communication network by performing modeling for performance analysis that can reflect various factors.

• Journal of Platform Technology
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• v.8 no.1
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• pp.3-9
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• 2020

In Korea, 63% of the nation's land is made up of forests, and the average temperature of the earth has been increasing. Forest service has been operating a proactive control system for preventing the spread of forest pests such as Pine wilt disease. but there were some hurdles in timely control due to weather, topography and manpower management difficulties. In this paper, we propose a model for building fast, accurate and efficient control system by categorizing the damage and dead wood automatically based on the images acquired using small unmanned aerial vehicles based on information and communication technology. In particular, the proposed model establishes an effective response system for government affairs through cooperation in the private sector. It can also create new jobs in the unmanned aerial vehicle business and service industries.

• International Journal of Internet, Broadcasting and Communication
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• v.13 no.2
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• pp.60-66
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• 2021

Blockchain is a technology that enables trust-based consensus and verification based on a decentralized network. Distributed ID (DID) is based on a decentralized structure, and users have the right to manage their own ID. Recently, interest in self-sovereign identity authentication is increasing. In this paper, as a method for transparent and safe sovereignty management of data, among data pseudonymization techniques for blockchain use, various methods for data encryption processing are examined. The public key technique (homomorphic encryption) has high flexibility and security because different algorithms are applied to the entire sentence for encryption and decryption. As a result, the computational efficiency decreases. The hash function method (MD5) can maintain flexibility and is higher than the security-related two-way encryption method, but there is a threat of collision. Zero-knowledge proof is based on public key encryption based on a mutual proof method, and complex formulas are applied to processes such as personal identification, key distribution, and digital signature. It requires consensus and verification process, so the operation efficiency is lowered to the level of O (log_eN) ~ O(N²). In this paper, data encryption processing for blockchain DID, based on zero-knowledge proof, was proposed and a one-way encryption method considering data use range and frequency of use was proposed. Based on the content presented in the thesis, it is possible to process corrected zero-knowledge proof and to process data efficiently.

• Asia-Pacific Journal of Business
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• v.12 no.4
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• pp.211-225
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• 2021

Purpose - This study deals with the Openness to Diversity(OD) of soldiers in the military organization for efficient unit operation of the military organization composed of various soldier. The purpose of this study was to examine the effects of information and value OD on innovative behavior and the mediating effect of unit-members trust. Design/methodology/approach - The 269 samples of this study were surveyed on army soldiers. The Exploratory Factor Analysis (EFA), the multiple regression, bootstraping analysis were hired in order to analyze the data. Findings - The results showed that the information & value OD were positive(+) effect on innovative behavior. Unit-members trust showed a mediation effect between OD and innovative behavior. Research implications or Originality - First, according to Defense Reform 2.0, the military is expected to be composed of more diverse classes in the future. There is a theoretical contribution that examine their perception of diversity within the military. Second, OD was confirmed as a variable predicting the innovative behavior of soldiers and unit-memeber trust mediate the relationship between OD and invative behavior.

• Journal of Information Technology Services
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• v.21 no.3
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• pp.43-61
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• 2022

With the development of information technology, IT-based services in public administration has become more indispensable. As a result, the importance of IT maintenance projects to improve the efficiency of IT services and secure service levels is growing. Due to the nature of IT maintenance projects on local government, which mainly involve small and medium-sized IT companies in the region, business participating companies often do not have an appropriate methodology for service quality management. To solve this situation, the government has prepared a service level agreements (SLAs) that can be applied to IT maintenance projects. However, most local governments do not use SLAs for IT maintenance projects. As a result, various problems such as failure of the IT maintenance project or deterioration of quality are occurring Thus, this paper suggested major indexes to evaluate which service factors affect the efficient operation of information systems and the improvement of service quality in IT maintenance projects of local governments and analyzed the importance of indexes based on AHP method. Using this research method, this study found the theoretical implications on the outsourcing service of IT maintenance.

• Journal of Distribution Science
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• v.21 no.5
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• pp.83-91
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• 2023

Purpose: Increasing their motivation and job satisfaction, employees in the distribution channel may be better able to interact with consumers and provide a more satisfying experience. Thus, increasing employee engagement in the supply chain necessitates a complex strategy considering the distinctive features of wholesale and retail markets. This study investigates how to boost employees' motivation in the supply chain based on the difference between wholesale and retail market. Research design, data, and methodology: The prior study analysis is a useful tool to take a look at relevant previous works via a significant screening and selecting strategy. The Key words based on the topic of the research have used, such as 'Employee Motivation', 'Supply Chain', 'Wholesale' and 'Retail' worker. Results: The findings of this research strongly indicates that motivating employees is essential for the efficient operation of supply chain activities as they continue to expand and become more complicated. The supply chain's two main segments are the wholesale and retail markets, each with distinct characteristics. Conclusions: This research focused exclusively on the factors that motivate supply chain workers, ignoring job satisfaction, corporate culture, and managerial style, which may affect employee motivation. These factors also have the potential to impact employee motivation and should be considered in subsequent research.

• Journal of the Korean Society of Food Culture
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• v.23 no.1
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• pp.18-25
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• 2008

The purpose of this study was to examine the satisfaction level of military personnels dispatched to Iraq with foodservices in a bid to help establish an efficient overseas military foodservice system. A total of 300 soldiers who served in an army division dispatched to Iraq was surveyed for this study. Regarding connections between the type of management and satisfaction level with foodservices, the contracted cafeterias were more satisfactory in terms of service than the military selfoperated ones, which indicated that it’s urgently needed to improve the service of the military-run cafeterias. The present work force of the Ministry of Defence makes it hard to provide military personnels with specialized foodservices. The military foodservice should provide meals to soldiers with quality. More branded concepts should be improved in the view of cost and effect. Or it’s advisable to take advantage of private resources as part of efforts for civil-military collaboration.

• Journal of the Semiconductor & Display Technology
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• v.22 no.4
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• pp.13-18
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• 2023

A subway station is a prominent multi-purpose facility where the quantitative management of fine dust, generated by various factors, is conducted. Recently, eco-friendly air purification methods using air-purifying plants are being discussed, with the focus on biofiltration through vegetation. Previous research in this field has confirmed the reduction effects of transition metals such as Fe, which have been identified as harmful to human health. This study aimed to identify the sources of fine dust dispersion within subway stations and derive an efficient operational strategy for air-purifying plants that takes into account the behavior characteristics of fine dust within multi-purpose facilities. The experiment monitored regional fine dust levels through IAQ stations established based on prior research. Also, the data was analyzed through time-series and correlation analyses by linking it with passenger counts at subway stations and the frequency of train stops. Furthermore, to consider energy efficiency, we conducted component-specific power consumption monitoring. Through this study, we were able to derive the optimal operational strategy for air-purifying plants based on time-series comprehensive analysis data and confirm significant energy efficiency.

• Corrosion Science and Technology
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• v.23 no.3
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• pp.203-214
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• 2024

A heat exchanger is a device designed to transfer heat between two or more fluids. In a vehicle's thermal management system, Al heat exchangers play a critical role in controlling and managing heat for efficient and safe operation of the engine and other components. The fluid used to prevent heat exchangers from overheating the engine is mostly tap water. Heat exchange performance can be maintained at sub-zero temperatures using a solution mixed with antifreeze. Although the fluid flowing through the heat exchanger can reduce the temperature inside the engine, it also has various problems such as cavitation corrosion. Cavitation corrosion characteristics in tap water and corrosion characteristics were evaluated in this study when antifreeze was added for test specimens where AA4045 was cladded on the inner surface of AA3003 tubes of a fin-type heat exchanger. The cavitation corrosion resistance of AA3003 was found to be superior to that of AA4045 regardless of the test solution due to higher corrosion resistance and hardness of AA3003 than those of AA4045. The cavitation corrosion rate of Al alloys increased with the addition of antifreeze.

• Asia pacific journal of information systems
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• v.33 no.3
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• pp.792-811
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• 2023

Recently, Web 3.0 services such as virtual currency, block chain, and NFT are attracting public attention. Users who depended on platforms are moving away from being dependent on service providers and moving to Web 3.0 services. Representative services of Web 3.0 include P2E (Play to Earn) and M2E (Move to Earn). In the case of P2E, various studies have been conducted as it is widely covered in the press and media, but research on M2E is relatively lacking. This study attempts to identify the intention to use M2E by using the expanded technology acceptance model. External factors were selected based on M2E's own characteristics and personal characteristics, a research model was designed, and the proposed hypotheses were verified through factor analysis and goodness of model fit. As a result of the study, it was confirmed that profitability, innovativeness, and self-expression had a positive effect on perceived characteristics, and that perceived usefulness, perceived enjoyment, and social influence had a positive effect on intention to use. Through the research results, practical implications for efficient service operation that meets the needs of users are presented to M2E platform providers.