• 대한인간공학회지
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• 제19권1호
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• pp.101-107
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• 2000

This study reviews several database menu structure for pc communication services to examine the efficiency of database menu structure. Database menu systems of 5 major pc communication companies were analyzed by GOMS methodology, a description of the knowledge that a user must have in order to carry out tasks on system. Also, each database access time of 4 pc communication companies were measured with internet pc environment in laboratory. It is recommened that another menu design strategies (for example, broad-shallow rather than narrow-deep) should be adopted because current menu structures have inefficient procedures to access those database.

• 항공우주시스템공학회지
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• 제3권1호
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• pp.6-11
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• 2009

It is anticipated that quality assurance for the Ka band Communication Payload System(COPS) development program of the communication, Ocean & Meteorological Satellite(COMS) may be a core technical factor to be concerned in order to avoid any failure, and to assure its final performance during the mission lifetime in space. Those can be managed and verified and assessed by performing the Quality Assurance (QA) and risk management which helps to prevent and to reduce the critical fails. This paper introduces the Product Assurance (PA) system and procedures for controlling and monitoring sub-contractors which were participated in Ka band Communication Payload System (COPS) development. Also this paper shows Quality Assurance (QA) procedures and detailed their processes for assured the product performed by local companies from site survey for selecting companies to delivery of their equipment.

• 항공우주시스템공학회지
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• 제2권1호
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• pp.22-27
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• 2008

It is anticipated that quality assurance for the Ka band Communication Payload System(COPS) development program of the Communication, Ocean & Meteorological Satellite(COMS) may be a core technical factor to be concerned in order to avoid any failure, and to assure its performance during the mission lifetime in space. Those can be managed and verified and assessed by performing the Quality Assurance (QA) and risk management which helps to prevent and reduce the critical fails. This paper introduces the Product Assurance (PA) system and procedures for Ka band Communication Payload System which was established and performed during the Qualification Model (QM) manufacturing phase. In this paper, we present detailed process for the products manufactured by local companies according to PA procedures operated through whole phases from design to test of equipment. Also this paper shows Quality Assurance (QA) procedures and detailed their processes for assured the product quality manufactured by local companies.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 D
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• pp.2349-2351
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• 2003

Over the past $2{\sim}3$ years power utilities have shown a marked change in attitude by an ever increasing interest in using relay communication features. As yet there is no accepted international standard for communication protocol in automation systems. Recent work within the UCA work group has resulted in the proposal, UCA 2.0, as the informative interface for automation systems. This proposed standard embodies the generic principles developed and used within generic protocol. This paper describes and analyses various communication protocols for automation systems in electric power companies.

• 한국콘텐츠학회논문지
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• 제15권12호
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• pp.572-585
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• 2015

본 연구는 공공기관 및 금융기관 종사자를 대상으로 두 가지 관점에서 수행되었다. 첫째, 상사 커뮤니케이션 능력과 자기효능감 및 학습목표지향성의 인과관계 검증이며, 둘째, 상사 커뮤니케이션 능력과 혁신행동의 관계에서 자기효능감과 학습목표지향성의 다중 매개효과 검증이다. 연구대상은 제주지역에 소재하고 있는 공공기관 및 공기업 종사자와 금융기관 종사자를 선정하였으며, 318명으로부터 획득된 자료를 활용하여 공변량구조분석을 실시하였다. 분석결과 첫째, 상사 커뮤니케이션 능력은 자기효능감과 학습목표지향성을 촉발하는 주요 원인이 되는 것으로 확인되었다. 둘째, 상사 커뮤니케이션 능력과 혁신행동의 관계가 자기효능감과 학습목표지향성에 의해 완전매개 되는 것으로 규명되었다. 본 연구의 시사점으로는 첫째, 상사 커뮤니케이션 능력이 구성원의 자기효능감과 학습목표지향성에 영향을 미치는 주요 변인임이 확인되었으며, 이러한 결과는 커뮤니케이션 연구에 의미 있는 시사점을 제공하고 있다. 둘째, 상사 커뮤니케이션 능력과 혁신행동의 관계에서 자기효능감과 학습목표지향성을 고려할 때, 상사 커뮤니케이션 능력이 혁신행동에 미치는 영향력이 자기효능감과 학습목표지향성에 의해서만 가능한 것으로 확인되었다.

• International journal of advanced smart convergence
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• 제8권2호
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• pp.102-108
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• 2019

Big data was associated with three key concepts, volume, variety, and velocity. Securities and investment services produce and store a large data of text/numbers. They have also the most data per company on the average in the US. Gartner found that the demand for big data in finance was 25%, which was the highest. Therefore securities and investment companies produce the largest data such as text/numbers, and have the highest demand. And insurance companies and credit card companies are using big data more actively than banking companies in Korea. Researches on the use of big data in securities and investment companies have been found to be insignificant. We surveyed 22 major securities and investment companies in Korea for activating big data. We can see they actively use AI for investment recommend. As for big data of securities and investment companies, we studied open API. Of the major 22 securities and investment companies, only six securities and investment companies are offering open APIs. The user OS is 100% Windows, and the language used is mainly VB, C#, MFC, and Excel provided by Windows. There is a difficulty in real-time analysis and decision making since developers cannot receive data directly using Hadoop, the big data platform. Development manuals are mainly provided on the Web, and only three companies provide as files. The development documentation for the file format is more convenient than web type. In order to activate big data in the securities and investment fields, we found that they should support Linux, and Java, Python, easy-to-view development manuals, videos such as YouTube.

• International Journal of Internet, Broadcasting and Communication
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• 제12권4호
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• pp.180-187
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• 2020

Security threats are increasing with interest due to the mass spread of smart devices, and vulnerabilities in developed applications are being exposed while mobile malicious codes are spreading. The government and companies provide various applications for the public, and for reliability and security of applications, security checks are required during application development. In this paper, among the security threats that can occur in the mobile service environment, we set up the vulnerability analysis items to respond to security threats when developing Android-based applications. Based on the set analysis items, vulnerability analysis was performed by examining three applications of public institutions and private companies currently operating as mobile applications. As a result of application security checks used by three public institutions and companies, authority management and open module stability management were well managed. However, it was confirmed that many security vulnerabilities were found in input value verification, outside transmit data management, and data management. It is believed that it will contribute to improving the safety of mobile applications through the case of vulnerability analysis for Android application security.

• International Journal of Internet, Broadcasting and Communication
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• 제12권2호
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• pp.59-65
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• 2020

The domestic sleep industry is rapidly increasing in market size as it is linked to sleep apnea in the longterm care insurance for the elderly and domestic IT technology. In addition, due to the aging society, the government's support policy is also increasing, and many domestic companies are focusing on the sleep industry. Therefore, this study intends to examine the development strategies of the domestic sleep industry due to the increased social interest and corporate activities. To this end, a survey of 108 domestic companies was conducted by means of a Frequency Analysis, revealing some problems, such as poor sleep companies, insufficient resources for technology development, and limitations in distribution channels. As a result, it was found that for the development of the domestic sleep industry, strategies to strengthen the ecosystem, such as softening strategies through the sleep technology culture, strengthening ecosystems such as revitalizing industrial connections, and reforming laws and regulations, are urgent.

• 한국컴퓨터정보학회논문지
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• 제5권2호
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• pp.158-164
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• 2000

본 연구에서는 자료포괄분석(DEA : Data Envelopment Analysis)을 이용하여 전자·통신업체들의 경영효율성 평가를 하였다. 자료포괄분석은 다수 생산자의 효율성을 평가하기 위해 Charnes 등에 의해 개발된 기법으로서 다차원의 투입변수와 다차원의 산출변수를 동시에 고려한 수 있는 기법이라 할 수 있다. 본 연구에서 투입변수로는 원재료비, 종업원수, 생산능력이. 산출변수로는 생산실적, 총매출액 및 당기순이익이 선정되었다. 효율성 평가 결과 대부분의 기업이 대상기간동안 경영효율성이 증가하거나 계속 효율적인 것으로 평가되었으며, 투입 및 산출변수는 높은 상관관계를 가지는 것으로 나타났다.

• International journal of advanced smart convergence
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• 제11권4호
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• pp.273-278
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• 2022

Uncertainty is increasing around the world due to COVID-19 and Ukraine crisis. In this situation, each company is making countless efforts to survive. In Korea, smart factory projects targeting small and medium-sized businesses with difficulties have been continuously promoted. As for the smart factory business that has been promoted so far, the base expansion of the smart factory is also steadily increasing as the number of companies carrying out the project is increasing. It was also found that it contributed to productivity improvement and quality improvement. Despite these positive aspects, difficulties and operational problems are also appearing in the process of promoting smart factories. In this study, we investigated and analyzed operational problems and difficulties in the process of promoting smart factories. In addition, improvement plans for problems were presented according to the contents of this analysis, and improvement plans were presented by classifying them into introduction and supply companies, considering that the smart factory business is formed in the form of a consortium between introduction and supply companies.