• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.324-325
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• 2011

This paper addresses the assessment of voltage sag costs based on the stochastic prediction of voltage sags. When voltage sags below a certain voltage threshold occur at sensitive industrial process, the industrial customer will experience financial damage. In order to mitigate voltage sag costs and devise efficient solutions to mitigate damage, a study on the financial loss assessment of voltage sags is basically needed. In order to assess the voltage sag costs, the expected sag frequency at a sensitive load point should be calculated by using the concept of the area of vulnerability and historical fault statistics. Then, financial loss due to voltage sags can be obtained by multiplying the expected sag frequency by the cost per sag event.

• International Journal of Human Ecology
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• v.2 no.1
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• pp.1-16
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• 2001

This study measures whether people who are expected to live in the new city of Namak are environmentally and ecologically aware, and it investigates which variables are related to their willingness to move to an ecological city. This study investigated the environmental cognition of inhabitants in Chollanam Province; it focused particularly on ecologically -oriented values, environmental knowledge, environmental management behavior, and the awareness of an ecological city. For the purposes of this study, 500 inhabitants from Mokpo, Kwangju and Muan who are expected to live in a new city of Namak were surveyed. Awareness of the ecological city was at medium level; half of the respondents were not aware of an ecological city. Multiple regression analysis was conducted to estimate the effects of the variables on the awareness of the ecological city. The most significant variable was environmental knowledge. Next, experience in environmental education and homeownership affected awareness. Half of the respondents were willing to move to an ecological city. Among all of the variables, seven variables were significantly related to the willingness to move to an ecological city.

• Korean Architects
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• no.7 s.459
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• pp.48-53
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• 2007

Amisak is a rechargeable tool company and is aiming to be a leading company in Korea by 2010. Ochang factory will be a base for this aim. Client's bad experience in construction of their first Suwon factory and my regretable memory of 1996 design & construction of BTC factory in Whasung lead us to desire for an outstandingly good factory. Total floor area is about 5,000 square. meter (1,500 py) and it has been designed with 3 different facilities, Factory (steel structure, 2 levels), Office (RC structure, 3 levels), and Welfare (RC structure, 3 levels including basement). Factory area is expected to expand its facility at the rear end within 3 to 5 years. Aimsak Ochang factory is expected to be completed in December 2007.

• International conference on construction engineering and project management
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• 2015.10a
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• pp.631-635
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• 2015

Construction managers use scheduling methods to improve the outcome of their project. In spite of the many obvious advantages of the critical path method (CPM), its use in construction has been limited. Understanding the reasons why CPM is not used as extensively as expected could improve its level of acceptance in the construction industry. The link between construction scheduling methods and the capabilities of the scheduling staff has been an on-going concern in the construction industry. This study proposes a staffing-technology fit model to understand why CPM is not used as extensively as expected in construction scheduling. A staffing-technology fit model that aims to measure the extent to which a construction scheduling method matches the staff's experience, know-how and capabilities. The model that is proposed is an answer to the lack of proper instruments for evaluating the extent to which scheduling methods are used in the industry.

• Journal of Digital Convergence
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• v.12 no.9
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• pp.359-367
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• 2014

This study aimed to identify empirically the differences of user interface experience factors for such manufacturers as Samsung, LG, Sky, Apple, etc., which are fiercely competing in the mobile market at home and abroad. In addition, this study aimed to verify how different the impact of such user interface experience factors on product attitudes and intention to repurchase would be for each manufacturer. As a result of the study, it was verified that there was a difference in the user experience between the manufacturers for all of the factors forming user satisfaction experience, which included information, interaction, useful experience and design experience satisfaction. Second, it was also verified that there was a difference between the manufacturers in terms of product attitudes. Lastly, it was verified that there was a difference between the manufacturers in terms of intention to repurchase. Specifically, it was found that Samsung had a higher degree of intention to repurchase than LG and Sky, whereas Apple had a higher degree hereof then Samsung. It is expected that the above results of study will provide the aforementioned manufacturers useful implications for establishing UI strategies through the contemplation of differences for each manufacturer in addition to the expansion of studies related to UI experience.

• Information Systems Review
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• v.25 no.2
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• pp.181-203
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• 2023

With the fierce competition of companies for the attraction of outstanding individuals, job satisfaction of employees has been of importance. In this circumstance, many companies try to invest in job satisfaction improvement by finding employees' everyday experiences and difficulties. However, due to a lack of understanding of the employee experience, their investments are not paying off. This study examined the relationship between employee experience and job satisfaction using employee reviews and company ratings from Glassdoor, one of the largest employee communities worldwide. We use text mining techniques such as K-means clustering and LDA topic-based sentiment analysis to extract key experience factors by job level, and DistilBERT sentiment analysis to measure the sentiment score of each employee experience factor. The drawn employee experience factors and each sentiment score were analyzed quantitatively, and thereby relations between each employee experience factor and job satisfaction were analyzed. As a result, this study found that there is a significant difference between the workplace experiences of managers and general employees. In addition, employee experiences that affect job satisfaction also differed between positions, such as customer relationship and autonomy, which did not affect the satisfaction of managers. This study used text mining and quantitative modeling method based on theory of work adjustment so as to find and verify main factors of employee experience, and thus expanded research literature. In addition, the results of this study are applicable to the personnel management strategy for improving employees' job satisfaction, and are expected to improve corporate productivity ultimately.

• Management Science and Financial Engineering
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• v.20 no.2
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• pp.27-31
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• 2014

This paper studies the assortment optimization problem in online retailing by using a multinomial logit model in order to take consumer choice behavior into account. We focus on two unique features of online purchase behavior: first, there exists increased amount of uncertainty (e.g., size and color of merchandize) in online shopping as customers cannot experience merchandize directly. This uncertainty is captured by the scale parameter of a Gumbel distribution; second, online shopping entails unique shopping-related disutility (e.g., waiting time for delivery and security concerns) compared to offline shopping. This disutility is controlled by the changes in the observed part of utility function in our model. The impact of changes in uncertainty and disutility on the expected profit does not exhibit obvious structure: the expected profit may increase or decrease depending on the assortment. However, by analyzing the structure of the optimal assortment based on convexity property of the profit function, we show that the cardinality of the optimal assortment decreases and the maximum expected profit increases as uncertainty or disutility decreases. Therefore, our study suggests that it is important for managers of online retailing to reduce uncertainty and disutility involved in online purchase process.

• Journal of Korean Critical Care Nursing
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• v.12 no.2
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• pp.50-60
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• 2019

Purpose : The purpose of this study was to identify the attributes, antecedents, and consequences of the transition of simulation-based learning (SBL) in nursing schools. Methods : The study was conducted in accordance with Walker and Avant's conceptual analysis process. We searched MEDLINE, CINAHL, EMBASE, Google Scholar, and RISS (Korean Education and Research Information Service) databases, resulting in nine studies for an in-depth review. Results : The attributes of transition of SBL include (1) preparing for a professional role, (2) practicing in a real clinical setting, and (3) progressing toward expected competency. Antecedents of the concept include novice status, changing roles, clinical experience in controlled settings, and expected competency in the clinical setting. Conclusion : The transition of SBL includes the important feature of progression toward expected competency. Further research is needed to identify graduate nurses' experiences during this transition to establish a strategy for improving it and developing a measurement tool that reflects attributes of the concept.

• Journal of People, Plants, and Environment
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• v.22 no.4
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• pp.395-410
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• 2019

The purpose of this study was to investigate 199 subfertile women's interest in and needs for forest therapy programs according to their demographic characteristics in a subfertile clinic in Seoul to provide basic data. The results of this study were summarized as follows. First, the perception and experience of subfertile women about forest therapy were all low, but their intention to participate was generally positive. Second, the type of forest therapy preferred by subfertile women was a half-day small group that they can participate with their spouse during weekends. Third, subfertile women expected phytoncide (35.8%) and a high level of oxygen (29.9%) from forest therapy programs. Fourth, subfertile women expected physical and mental health such as improved blood circulation and immunity, and meditation opportunity from forest therapy. Fifth, subfertile women expected from forest therapists understanding and sympathy (62.2%). This study conducted a survey on 199 subfertile women only. Through follow-up studies that involve more subfertile subjects and a broader region, it will be possible to develop more effective forest therapy programs for promoting the physical and mental health of subfertile subjects.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.22 no.49
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• pp.33-41
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• 1999

The original tolerances, which are assigned by designers on the basis of handbooks and experience, cannot always be expected to be optimal or feasible, because they may yield an unacceptable manufacturing costs. So the systematic tolerance design considering manufacturing costs should be done. Therefore, this research analyzes the tolerance within the tolerance design using Monte-Carlo simulation method and sensitivity analysis and using genetic algorithm by tolerance allocation method. The genetic algorithm was developed for allocation of the optimal tolerance under the manufacturing limitation cost.