• Journal of Korean Home Economics Education Association
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• v.18 no.3 s.41
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• pp.119-131
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• 2006

The purpose of this study was to investigate the body size perception and appearance management behaviors of middle school boys and girls. Subjects of this study were 7 coeducational middle school boys and girls in Gwangju and 435 responses were collected from real body measurement and questionnaires. SPSS package 12.0(Kr) was used to analyze results. The results were summarized as follows: First, middle school boys and girls tended to perceive their bodies slimmer as well as obeser. It is recommended to give education for correct perception of their body sire. Second, the correlation of body size perception factor and appearance management behavior was Middle school boys and girls tended to manage their appearance using a diet rather than doing exercise in obesity distortion perception group(the group perceive obeser than real body size). It needs to be properly guided. Third, the appearance management behavior of slimness distortion perception group(the group perceive slimmer than real body size) and normal group was examined. While middle school boys did only exercise management, middle school girls did all but exercise management. Their education should be distinguished. Finally, while slimness distortion perception group did diet management in both middle school boys and girls, they tended not to manage body correction or exercise. A tendency to depend only on a diet in the group who should perceive their need of exercise should be corrected. In order to correct the distorted body perception and appearance management behavior of middle school boys and girls, it is recommended to educate a standard body size through home management education which is a regular curriculum, and at the same time to guide them to perceive their actual body size correct.

• Journal of Families and Better Life
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• v.26 no.1
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• pp.31-49
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• 2008

This study has been performed to explore verbal and behavioral expression of sexual desires among male elderly residents who have been living in long tenn care facilities. There are three topics covered in this study; first, in what situations and how seriously do care workers encounter expression of sexual desires of the elderly residents? Second, what kind of negative consequences do they believe those sexual behaviors will lead to? Third, how can we implement defensive measures against the sexual behaviors? In this study, twenty three care workers working full time in five retirement and care facilities were asked about their experience and perception of the above study agendas, and answers of the qualitative interview were drawn as follow; first, the elderly residents apparently show a variety of sexual harassment and provoking behaviors such as sticking to specific women, physically touching and attacking, and induce obscenely activities against female residents, care workers, and volunteer visitors. Second, their sexual behaviors are often influenced by their isolated and abandoned emotionality as well as living situation in rural areas. Third, their sexual behaviors often critically affect care work plan and facility managements by severely discouraging female care givers and community supporters. Therefore in this study, suggestions and defensive measures were made as follows: first, education and counselling programs toward female workers and volunteers need to be developed, and the programs should cover psychological and behavioral mechanism of sexuality in later life. Second, self control plans need to be empowered toward the elderly residents; in the plans, the elderly residents shall be encouraged to evaluate primary cause and proper solutions of sexual behaviors of their peering residents. Third, combination of healthy housing and care facilities for frail elderly need to be integrated in a neighboring location, so that when residents and workers encounter extreme episodes of sexuality of healthy residents in a housing facility, the problematic sexual residents are partially transferred into a neighboring care facility and thereafter other residents and cafe givers are relieved from stressful contacts with the extremely sexual residents.

• Journal of the Korean Operations Research and Management Science Society
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• v.21 no.1
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• pp.51-69
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• 1996

We consider a consumer self-selection model in which a regulated firm faces two market segments with differing valuation of quality of telecommunication services and examine some economic implications from the behaviors of the firm. In the context of a regulated monopolist, even though the results depend on the degree of privatization, the firm could lower the quality of the low-end model and reduce the price of the high-end in order to alleviate cannibalization. This justifies the provision of universal service policy in the telecommunications market. Based on this self-selection model, we also analyze an extended model of product introduction and show that the monopolist will introduce new product with the same introduction time of social planner. However, when we consider competition among firms, the market equilibrium may not guarantee the efficient time of product introduction.

• Journal of the Korean Operations Research and Management Science Society
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• v.37 no.3
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• pp.95-116
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• 2012

The purpose of this paper is to show the effect of information sharing strategy on the supply chain performances. While traditional information sharing models assumed centralized stock information, recent supply chain practices often implement fully shared stock information, where real-time stock information is accessible on retailers. When retailers are competing with each other, this fully shared stock information may incur retailers' strategic order behaviors. Thus, this paper analyzes a simple two-level supply chain consisting of one warehouse and two identical competing retailers where the real time stock information is fully shared. The warehouse uses the traditional echelon stock policy. Under this environment the retailers' reorder decisions are derived using the order risk concept and the retailer competition mechanism is analyzed. Computational results show that the supply chain performace degradation in the fully shared stock information is quite significant, implying the importance of designing information sharing strategies in the supply chain design phase.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.725-734
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• 2013

This paper aimed to verify the current status of adolescents' donations and predictors influencing their donation behaviors. First, the result revealed that adolescents' donations were higher in the order of time, material, and talent donation. Second, donation motives, attitude towards donation, self-esteem, a sense of community, and trust in charitable organization were positively correlated. Third, the predictors of material donation behaviors of adolescents were gender, age, extrinsic motives, attitude towards donation, sense of community, and trust in charitable organization. And the predictors of time donation behaviors were gender and sense of community, and those of talent donation were age, intrinsic motives and sense of community. The strategies for the activation of adolescents' donations were suggested.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2001.10a
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• pp.233-236
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• 2001

This study explores on the static and dynamic growth patterns of high-tech ventures in Korea. We developed an integrative framework with target market (local vs. global), product/market maturity (existing vs. emerging), and technological capability (follower vs. pioneer). We also identified seven new ventures strategies as follows: i) reactive imitation, ii) proactive localization, iii) import substitution, iv) creative imitation, v) early market-entry, vi) global niche, and vii) global innovation. With five successful Korean new ventures, we found different competitive behaviors and performance among new venture strategic types. This study also observed two different growth patterns: growth through strategic replication and growth through strategic change. It depends on whether they are pursuing similar strategy over time or different strategy within for growth. In addition, we found that creative imitation plays a stepping-stone role in two-step internationalization processes. Although this study is exploratory and needs more empirical studies, it can provide new ventures with meaningful guidelines for growth and internationalization with a dynamic perspective.

• Journal of Korean Tunnelling and Underground Space Association
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• v.17 no.4
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• pp.441-455
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• 2015

In the present study, a face safety monitoring system was developed that will enable judging collapse risks on faces during tunnel construction to secure workers' safety. This system enables detecting abnormal behaviors of faces by analyzing the displacement of faces measured in real time using the x-MR control chart technique. In addition, an algorithm to judge false alarms was developed so that abnormal behaviors of faces and errors occurring in the process of work can be distinguished from each other by comparing the number of measured values exceeding the management criteria and moving range k. The results of the present study are applicable to real-time monitoring of behavior on the face in dangerous ground sections to minimize damage to workers.

• Korean Journal of Human Ecology
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• v.17 no.3
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• pp.457-467
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• 2008

The purpose is to explore elementary students' attitudes towards money and the effects of parents' educational involvement on children's economic behaviors. The subjects are elementary students(N= 123) from first grade to sixth grade. The survey consists of question items of money ethics, attitudes towards money, consumer ethics, parents' attitudes toward economic education, and children's economic practices such as management of allowance, income, saving and savings account. The results are as follows: first, the elementary students show the double standard in attitudes to money, thinking of money as positively being important, at the same time, as being negative social value. Second, the parents play positive models in children's economic education. However, their efforts are not enough so that their children could have desirable economic habits. Therefore, economic education is first needed for the parents and then for children.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.44 no.3
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• pp.86-97
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• 2021

As mechatronic systems have various, complex functions and require high performance, automatic fault detection is necessary for secure operation in manufacturing processes. For conducting automatic and real-time fault detection in modern mechatronic systems, multiple sensor signals are collected by internet of things technologies. Since traditional statistical control charts or machine learning approaches show significant results with unified and solid density models under normal operating states but they have limitations with scattered signal models under normal states, many pattern extraction and matching approaches have been paid attention. Signal discretization-based pattern extraction methods are one of popular signal analyses, which reduce the size of the given datasets as much as possible as well as highlight significant and inherent signal behaviors. Since general pattern extraction methods are usually conducted with a fixed size of time segmentation, they can easily cut off significant behaviors, and consequently the performance of the extracted fault patterns will be reduced. In this regard, adjustable time segmentation is proposed to extract much meaningful fault patterns in multiple sensor signals. By considering inflection points of signals, we determine the optimal cut-points of time segments in each sensor signal. In addition, to clarify the inflection points, we apply Savitzky-golay filter to the original datasets. To validate and verify the performance of the proposed segmentation, the dataset collected from an aircraft engine (provided by NASA prognostics center) is used to fault pattern extraction. As a result, the proposed adjustable time segmentation shows better performance in fault pattern extraction.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.49 no.6
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• pp.90-97
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• 2012

In this paper, the new user mobility model which can be utilized to register user's location for interworking with heterogeneous overlay convergent networks under the time-varying radio propagation environment has been proposed. Thus the user mobility model is considered in order to evaluate the behaviors of users in the overlay convergent networks. This Mobile IP user mobility model will be very useful to model the user mobility behaviors and can be used to estimate the signaling traffic and frequency spectrum demands for massive data transfer for the heterogeneous overlay convergent networks.