• Journal of Digital Convergence
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• v.14 no.5
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• pp.273-281
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• 2016

The issue about the safety management of gas related work has been studied toward a direction to utilize IoT system recently. For this purpose, the matters of user's demand has been deduced through the literature survey, field survey, and professional consultation, by studying the characteristics of worker, work, and work site. In summary, these are the demands for mobile App, 1)a clear arrangement of contents, 2)a design with high readability, 3)a design with low death, 4) securing of user's accessibility, 5)an effective information transmission plan in the work section where it is impossible to operate the mobile device, 6)an activation of alarm function at the section of high working error, 7)a fast two-way transmission and receipt of safety inspection matter needed at work, 8)a selection of images and contents that can guide the situation to the worker in case of accident, 9)an alarm function for the degree of danger in an area of worker's location. Based on these, a basic design of safety application for gas related work has been proposed, that can secure the user accessibility.

• Journal of the East Asian Society of Dietary Life
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• v.17 no.4
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• pp.520-531
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• 2007

In this study, we found that the moisture content of black sesame seeds increased in proportion to steaming time, and it decreased in reverse proportion to the roasting temperature and time. The crude fat and crude ash contents were shown to be in the order of steamed black sesame>raw black sesame and roasted black sesame>raw black sesame, Crude protein decreased in reverse proportion to the steaming time, and more crude protein was found in the raw black sesame samples than in the roasted black sesame samples. The contents of sesamin, sesamolin, and total lignans were shown to be in the order of roasted black sesame>raw black sesame>steamed black sesame. In the steamed black sesame samples, sesamin showed its highest level with 20 minutes of treatment, and sesamolin showed its highest level with 15 minutes of treatment. In the roasted black sesame samples, sesamin, sesamolin, and total lignans showed their highest levels with 15 minutes of treatment at $100^{\circ}C$. The phenolic compound content increased in proportion to steaming time in the steamed samples, and reached a peak after 15 minutes of treatment at $100^{\circ}C$, and then decreased after 20 minutes. SOD-like activity reached a peak after 15 minutes of treatment, and in the roasted sample it reached a peak after 15 minutes of treatment, and then decreased after 20 minutes. SOD-like activity was comparatively lower than tocopherol and higher than sesamol. The intensity of electron donating ability, following 30 minute treatments, was shown to be highest in the steamed black sesame samples after 25 minutes of treatment, and next highest in the roasted black sesame samples after 15 minutes at $100^{\circ}C$. The electron donating ability was comparatively lower than tocopherol and sesamol. With regard to lecithin's antioxidant effects, the steamed samples showed a higher oxidation restriction rate in proportion to time, and the roasted samples showed the highest rate after 15 minutes of treatment, and then decreased after 20 minutes of treatment. for hydroxyl radical scavenging, similar scavenging activity to tocopherol, and comparatively higher scavenging activity than sesamol, was shown in all samples: all samples showed scavenging abilities of 90% or higher. In summary, this study applied three different treatment methods to black sesame to determine the optimum treatment conditions, and also examined the antioxidant effects and functional characteristics. The results showed that roasting can be used for other purposes than producing oil, and also suggested that methods other than roasting can be used in a variety of ways in cooking. Also, the different treatment methods can be applied in cooking in a variety of ways, to enhance functionality and preference.

• The Journal of Korean Association of Computer Education
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• v.20 no.6
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• pp.1-15
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• 2017

The purpose of this study is to design a LMS(Learning Management System) dashboard for instructor feedback support based on learning analytics and to apply a LMS dashboard incorporating such taxonomy which allows an instructor to give a student personalized feedback according to the class content and a student's traits. In the dashboard design phase, usable instructional data were selected from LMS based on feedback taxonomy in terms of learning analytics. Two validity tests were conducted with 8 instructional technologists over 8 years of experience, and were revised accordingly. The final dashboard screen has three parts: A comprehensive analysis screen to provide appropriate feedback based on instructor feedback taxonomy analysis, a summary screen for learner analysis, and a recommended feedback guide screen. Detailed analysis information are provided through other dashboards that are displayed in eight screens: login analysis, learning information confirmation analysis, teaching materials learning analysis, assignment/tests, and posts analysis. All of these dashboards were represented by analysis information and data based on learner analytics through visualization methods including graphs and tables. The implications of educational utilization of the dashboard for instructor feedback support based on learning analytics and the future researches were suggested based on these results.

• Korean Journal of Occupational Health Nursing
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• v.11 no.2
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• pp.108-120
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• 2002

This study analyzed the managerial efficiency of 11 organizations, the branch centers of a occupational health service organization in Korea, using the Data Envelopment Analysis (DEA) method. The DEA is a good method for evaluating health services since it can handle multiple inputs and outputs simultaneously, and also identify the sources and amount of inefficiency. The author approached this study using two efficient models: the monetary value model and the real value model. The DEA method based on the monetary value model included cost factors, while the real value model excluded cost factors. The input variables used were manpower of physicians, medical technicians, nurses, industrial hygienists and administrators; labor, maintenance, and material expenses. The output variables used were the number of medical examinations, workplace evaluations, group health management services and income from each service. The major results were as follows: First, in the monetary value model, 6 out of 11 organizations (54.6%) showed an efficiency score of 1.0, which means that they have been operating in very efficient ways. However, 5 organizations (46.4%) showed themselves to be relatively inefficient. Second, in the real value model, 7 out of 11 organizations (63.4%) showed an efficiency score of 1.0, which means they have been operating efficiently, while 4 organizations (46.4%) showed themselves to be relatively inefficient. Third, the reliability of DEA method were analyzed by comparing the results of the monetary value model and real value model. The results of 8 out of 11 organizations were same in terms of being efficient or not. Thus, the DEA could be a valid application method for occupational health service organizations. Fourth, the organizations that displayed common inefficiency in both the monetary value model and in the real value model 3, 9, and 10, were also considered to be managed inefficiency from expertise opinion. In summary, this study evaluated the efficiency of occupational health service organizations applying the DEA method with different variables, and found that the results of analysis could be valid in terms of both modeling and expert sense. In the future, the DEA method will be used as a useful tool to identify and evaluate the efficiency of occupational health service organizations through more applications and refinements.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.8 no.2
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• pp.21-33
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• 2013

This study analyzes the effects of diversification on business results and enterprise values of KOSDAQ-listed venture companies to inquire into the effective diversification strategies of venture companies after an initial public offering (IPO). In particular, this study used the Berry-Herfindahl index as a proxy variable regarding the level of diversification of venture companies, and categorized the diversification methods into M&As, strategic partnerships and establishment of subsidiaries to analyze the effects of the mutual interaction among such methods. The following is a summary of the results of the analysis. First, diversification did not have any statistically significant effects on business growth. However, it was found that there was an inverted U-shaped relationship between diversification and the profitability of the company. Second, although no statistical significance was found between enterprise values measured based on diversification and market value, a U-shaped relationship or positive relationship was found. Third, M&As were found to moderate the relationship between diversification and business results and enterprise values. Fourth, strategic relationship and establishment of subsidiaries was found to moderate the relationship between diversification and the profit results of the company. Based on the above findings, this study discovered the practical implications regarding the diversification of venture companies after listing on the KOSDAQ.

• Health Policy and Management
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• v.10 no.2
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• pp.103-119
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• 2000

This study is conducted to promote the activation of volunteer activities on the basic of the voluntaarry participation of local by investigating the utillzation of volunteers and analyzing this realted factors in the visiting health services of health centers. Subjects in this study were the whole 245 health centers. Data were collected from April, 12, 1999 to May, 31, 1999, and data for analyses were ones of 41 respondents, which answer " they utilize volunteers in visting health services". The summary of resulth was as follows : 1. In case that the type of health centers is one of county, in case that the number of staff in health center is over 80, in case that model business in not performed, in case that the degree of local financial independence is over 50%, and in case that the location of health centers in not good, there had more of volunteers in visiting health services. 2. 51.2% of analysing health centers answered that the utilization of volunteers has been done since 1998. 56.1% answered that they utillzed volunteers "over 4 hours" per person in a week. The average number of volunteers who was engaged at those visiting health services was 43.3. 3. Most of volinteers were housewives(73.2%). As for the action duration of volunteers. 68.8% answered " under 6 months". 4. As to the tasks of volunter activities, 75.6% were "home services" and 63.4% were "movable bath services". As for the tasks they intend to utilize, 90.2% answered " home services", 73.2% answered "movable health services". 5. Asked abount the purpose in utilizing volunteers, 75.6% answered "to induce the participation og local people". 65.9% answered "to provide various kinds of services". 66.7% provided some kind of education and training for volunteers. 6. Concerming evaluation of performance by volunteers, 90.2% answered " satisfactory". With reagards to the reason for that, 52.9% answered " volunteers can provide kinds of services". and 50.0% answered " volunteers can help local people to care their health". As for the obstacles to the utilization, 51.2% answered " the diffculty of recruitment for volunteers" and 43.9% answered "lack of budget and manpower needed for the utilization of volunteers".lty of recruitment for volunteers" and 43.9% answered "lack of budget and manpower needed for the utilization of volunteers".lunteers&".ot;.

• Korean Journal of Construction Engineering and Management
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• v.7 no.6
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• pp.99-111
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• 2006

Of the numerious dispute resolution methods, Alternative Dispute Resolution(ADR) is the most highly recommended approach for the guarantee bond-related dispute. In reality, however, claims were not resolved satisfactorily through ADR because of the lack of reference materials for negotiation, thus those were frequently had to be resolved through litigation. The above fact implies that, it is required to seek an efficient way to resolve the bond-related claims prior to they progress to litigation. This research paper intensively investigated judicial precedents of 232 cases with regard to construction bond-related disputes that observed during the analysis period(2000-2004). According to the summary statistics, it turned out that litigation were time consuming and potential economic loss was tremendous; on average, it takes 1067 days(the longest case was 1965 days) for dispute resolution. It suggests that litigations should be discouraged considering the magnitude of potential loss of stake holders. Research results revealed that there are some significant differences between categories in some variables affecting to the rate of winning; i) the number of lawsuit deputies of a plaintiff (in the 1st trial), ii) dispute locations (in the 1st and 3rd trials), iii) contract price (in the 1st trial), iv) contractors' operating capability (in the 1st and 2nd trials). For the rest of variables, significance level between categories was too low for preparing efficient improvement plan. Despite the important implications drawn from the analysis, this research has limitation due to the several reasons such as data structure, the depth of Information, etc. Therefore, more systematic research should be followed in the future.

• Journal of the Korean Society for information Management
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• v.35 no.3
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• pp.189-214
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• 2018

The purpose of this study is to identify the status and also to develop improvement plans for the children and youth services of the public libraries. To determine the information service status and the librarians' perceptions on the levels of services they provided, the 2016 Korean National Library Statistics System data and the survey results from the children and youth program librarians in the 108 public libraries were analyzed. The analysis revealed the problems such as lack of human resources and budget, shortage of space, and an inflexible program curriculum, which affect the program as a whole negatively. Five suggestions were made to remedy the problems. They are: 1) development of the new programs, which can interest the children and youth and motivate the sense of association among the program participants; 2) increase the number of the programs including the schools and other related organizations nearby region; 3) incorporating the new program formats to enhance the participation; 4) starting the new services explicitly targeted for the information-poor group of people; and 5) soliciting policy-level support for the libraries. In summary, this study made a few suggestions for the libraries ranging from planning the programs to requesting assistance from the national as well as the regional governments.

• Journal of the Korean Operations Research and Management Science Society
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• v.39 no.4
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• pp.85-95
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• 2014

In the e-commerce, the conversion into the multi-media is the important issue. According to the research by Nielsen Korea, the 83% of customers who purchase the products in the e-commerce utilize multi-channel to buy the products such as mobile and online [3]. Thus, to effectively implement online advertising, marketers should understand the customers' path [15] in the multi-channel. The study of the multi-site activities plays an important role to predict customers' purchase [28]. To explain the e-commerce site visit activities of customers, we have developed research model in terms of the online advertising. This research model is based on the study of Moe and Fader [23]. There are two types of composition in the research model. First, general site visit as an exploratory search have net effect on the shopping site visit because customers could acquire or develop information on the e-commerce site via online advertising. Secondly, the e-commerce site visit as a goal-directed search cause threshold of the e-commerce site visit because customers could achieve their goal. When the threshold is increased, the probability of a shopping site visit is decreased and vice versa. Thus, we have investigated the impact of customers' previous visit activities (general site visit and shopping site visit) on the next e-commerce site visit in terms of dynamic view. Research data was provided by Cheil World Wide. This panel data include mobile and online log data of panelists from Jan. 2013 to March 2013. As the results, the customers' e-commerce site visit on the online media would decrease the probability of e-commerce site visit because these visit activities increase the threshold of e-commerce site visit. This result is similar with the previous study [23]. Otherwise, since e-commerce site visit on the mobile media decrease the threshold, the customers' probability of e-commerce site visit would increase In summary, the site visit activities on the mobile could improve the probability of e-commerce site visits.

• Journal of Distribution Science
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• v.10 no.12
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• pp.35-43
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• 2012

Purpose - This study analyzes the effects of types of leadership on the employees of Italian restaurants, its efficacy, and organizational citizenship behavior, utilizing a causal assessment model. In this study, independent variables such as the type of leadership perceived in the manager or chef by an Italian restaurant's employees, and its efficacy were parameters, and the organizational citizenship behavior and organizational effectiveness were the variables representing the results in the hypothesis. The study aimed to draw implications by verifying the leadership via efficacy and the impact on organizational citizenship behavior of Italian restaurants. Research design, data, methodology - For the purpose of this analysis, specific questionnaire items were configured according to the theory and efficacy of the study. From a questionnaire used in organizational citizenship behavior comprising 22 questions, six were modified to suit the research purpose of this study. The configured questionnaire comprised 5 parts and 40 items. A Likert (Likert) 5-point scale was utilized to measure responses to the questionnaire items from the employees of an Italian restaurant in Seoul who participated in the survey. For data collection, 400 questionnaires were distributed, and 344 collected. Factor analysis and reliability verification were conducted using SPSS18.0 and AMOS18.0. A covariance structure analysis was conducted to test the research hypotheses. Results - Based on the results of the analyses, the summary and suggested implications of the research are as follows: The covariance structure analysis used to analyze the kind of effect transformational and transactional leadership styles in Italian restaurant employees had on self-efficacy, group-efficacy, and organizational citizenship behavior, indicated that among the characteristics of transformational leadership (such as, idealized influence, inspirational motivation, individual consideration, and intellectual stimulation), idealized influence and individual consideration had a positive influence on self-efficacy. Idealized influence, individual consideration, conditional reward, and management by exception also positively influenced self-efficacy and altruistic and conscientious behavior (organizational citizenship behavior). Conclusions - Results suggest that with regard to self-efficacy and group efficacy, managers in different departments and chefs should provide team members with a vision for the future, increase their confidence in their abilities, and build their trust in the organization. By evaluating employee performance and experiences, management can demonstrate leadership and encourage organizational citizenship behavior through enjoyable, voluntary participation. Transformational and transactional leadership is effective in group processes that include social-exchange relationships, self-efficacy and group efficacy, and organizational citizenship behavior. However, as this research study utilizes only self-reported data, it has several limitations, such as a vulnerability of errors caused by the various experiment types. A significant limitation of this study is the lack of potential for the duplication of results. The covariance structure analysis, however, provides complementation to limit the impact of errors from self-reporting studies. A future study can extend this research by utilizing different data collection methods.