• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.10
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• pp.4893-4901
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• 2013

In order for a machine, especially used in the defense industry, to consistently operate during its life-time, lots of study has been done in machine design as well as machine maintenance. However, the realistic study is necessary in management and operation of a military support facility, where spare parts are stored and retrieved. In this paper, efficient arrangement of spare parts are proposed to acquire increased in efficiency and decreased in cost for operation management of the military support facility. First, spare parts is assorted by MTBF(Mean Time Between Failure) and divided in to three groups A/B/C as an alternative arrangement. Each defined alternatives will go under simulations and RULA(Rapid Upper Limb Assessment), which is posture classification scheme evaluation attributes, to find working time and posture difficulty and lastly by entropy measurement to be selected. This research proposes the efficient spare parts arrangement in military support facility to minimize working time and posture difficulty. By taking system and human engineering approach together into consideration, it will lead to show a specific value.

• Journal of the Economic Geographical Society of Korea
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• v.22 no.3
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• pp.337-350
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• 2019

The Gwangyang City of Jeonnam Province, is one of the steel cities representing the Korea. Gwangyang Steelworks are the core of the local economy, and 59 firms of POSCO Outsourcing Partner Cooperation(POSPA) have been employed 9,300 to 9,500 peoples, and have been acted as an central incubator for job creation. POSPA, however, are suffering from the retirement of company in young age group, in their 20s and 30s. The purpose of this study is to analyze potential job seekers' perceptions and job preferences for POSPA are suffering from job openings. In order to this research purpose, it used questionary survey, and sample groups were divided into three areas, the Eastern Jeonnam Province, Gwangju, and the Seoul metropolitan area. Potential job seekers' perceptions for POSPA was low, and perceptions on firm and job opportunity information was lower. This characteristics were the same as those of respondents living in eastern South Jeolla Province. Potential job seekers, however, showed high preference for finding job at POSPA. A place-based policy considering the local labor market is needed to resolve the mismatch between the difficulty of finding a labor and the difficulty of finding a job.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.7
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• pp.2971-2982
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• 2012

This study aimed at analyzing teachers' perception of democratic civic education. A total of 200 childcare teachers participated in the survey, and frequency analysis and cross-tabulation analysis were performed to analyze the survey data. According to the results of the study, first, the childcare teachers were significantly different in the teachers' factors on necessity and difficulty of democratic civic education. The childcare teachers perceived the necessity of democratic civic education, and attributed the cause of the difficulties in democratic civic education to parents' attitudes. Second, there weren't significant differences in the teacher's factors on the content and methods of democratic civic education. Therefore, in this study, it is emphasized that democratic civic education is related to young children's homes and communities, and reorganization of democratic civic education programs based on development of young children is suggested.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.5
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• pp.1260-1264
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• 2008

An official report printed in June, 2005 represents that there are 180 thousands people with visual impairments in Korea, and 10 thousands of people with visual impairments are newly increased by every year since 2000. They are neglected from getting education, selecting job, and enjoying recreation activity. Above all, they have strong restriction when they are walking on the street; they are facing difficulty and inconvenience. Many smart cane products were introduced but expensive cost blocked popularization of them. In this study we have an object to development of smart cane that is chip and proper for korean street. For this, we suggest basic design of smart cane and experiment on ultrasonic sensors for visually impaired person.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.6
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• pp.2757-2762
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• 2012

Sewage pipelines are one of important infra-structures. The main reasons of sewage pipelint failure are improper backfill materials and compaction controls in field. Especially, it is very difficult to compact the lower part of circula pipelines. In order to overcome these problems, the prefabricated light-weight plastic foundation was developed. Couple of load-displacement tests were carried out to get the characteristic of failure. From the limited laboratory loading tests, the use of prefabricated light-weight plastic foundation is an alternative to solve the difficulty of backfill materials and compaction control.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.10
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• pp.4574-4577
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• 2011

In this paper, In this paper, analyzed structure of home networking used in USN(Ubiquitous Sensor Network) and embedded systems for home automation was implemented on the Android operating system. Developed a system for building a home network using wireless communication, so it is possible to minimize the difficulty of installation. Home automation system has built based on pre-defined ID according electronic components that make a house. In addition, a data structure suitable for home automation was defined and developing application programs based on Android OS according to packet structure, embedded system for home automation was developed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.11
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• pp.3144-3154
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• 2009

Recently, people seek to recognize organizationally and cross sectionally the period work of a company such as manufacturing, retail, distribution, accounting, and personnel management in order to maximize company profit. Also, the ERP system, which is used as a management concept for plan management designed to optimize the utilization of management resources in an enterprise like manner, has been introduced for the same purpose. This study has examined the ERP system, which has been currently set up, for the parent company, S. The study has evidentially analyzed the system efficiency and satisfaction level of customers by examining implementation effects after onsite application and by seeking ways of improvement after recognizing the difficulty linked with use discovered after onsite application of the system and rejection by customers by conducting a questionnaire survey.

• Journal of Powder Materials
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• v.14 no.3 s.62
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• pp.173-179
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• 2007

In the metallothermic reduction (MR) process used to obtain tantalum powder in one batch, it is difficult to control the morphology and location of the tantalum deposits. On the other hand, an electronically mediated reaction (EMR) process is capable of overcoming this difficulty. The effect of using $K_2TaF_7$ as the raw material and sodium as the reducting agent on the characteristics of tantalum powder are investigated. As the temperature of the reduction varied from 1023K to 1223K, the powder particles obtained with MR were relatively large $({\sim}34{\mu}m)$, while those prepared via EMR were of uniform $(13{\mu}m)$. In the MR process, the Ta powder recovery rate increased from 37% to 83% at 1123K in constrat with EMR process.

• Journal of Korea Port Economic Association
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• v.21 no.3
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• pp.115-148
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• 2005

In the liner market, a strategy is hard to sustain as competitors can easily imitate the strategy. For examples, when a number of shipping companies pursue this space exchange strategy in a liner market, their competitors are likely to build a cooperative alliance, following similar strategic pattern without any difficulty. Such strategic imitations are universal in international liner market. Therefore, the success of global alliance requires following critical considerations. First, the strategy of global alliance should be designed the way it gives the liner operators an economy of scale, which could be a key advantage in the competitive market. Second, thorough global alliance the lines should be able to improve their transport service through the reduction of operating costs and the business rationalization. The international alliance today is characterized by a strategic cooperation among a limited number of 'mega-carriers'. Such cooperation between the large-sized operators has come in many different forms. However, the trend has been towards the space exchange agreement, where a carrier on a route offers to another carrier a fixed number of spaces for a fixed period of time. the major carriers have been entered into groupings by integrating their services structures to increase market power. With reference to the above, this study has the following primary objectives: (1) to explore the present status of global alliance in liner shipping industry, (2) to prospect the future trend of the global alliance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.1
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• pp.209-218
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• 2016

This study analyzed the data using the phenomenological method proposed by Colaizzi (1978) to understand the meaning and reality of the health care experience of clinical nurses in a university hospital. The data were collected from 9 participants, who were nurses in a university hospital in the city of S from Oct 4, 2015 to Oct 30, 2015. The results showed that the health care experiences of the participants may be categorized into 5 categories, 'ambivalence toward the physical health care', 'pressure over physical exercise', 'the difficulty arising out of shift work', 'stress management', and 'rediscovery of self', and may be identified with a 14 theme cluster and 42 themes.