• Journal of KIISE:Software and Applications
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• v.35 no.10
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• pp.589-599
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• 2008

Accurate software effort estimation has always been a challenge for the software industrial and academic software engineering communities. Many studies have focused on effort estimation methods to improve the estimation accuracy of software effort. Although data quality is one of important factors for accurate effort estimation, most of the work has not considered it. In this paper, we investigate the influence of outlier elimination on the accuracy of software effort estimation through empirical studies applying two outlier elimination methods(Least trimmed square regression and K-means clustering) and three effort estimation methods(Least squares regression, Neural network and Bayesian network) associatively. The empirical studies are performed using two industry data sets(the ISBSG Release 9 and the Bank data set which consists of the project data collected from a bank in Korea) with or without outlier elimination.

• Proceedings of KOSOMES biannual meeting
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• 2005.11a
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• pp.125-132
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• 2005

Marine Technology is the last hope of mankind for in resolving predestined issues of food, resources, and environmental problems. Facing and realizing this great challenge, domestic industrial, academic and research institutional experts participated in formulating the Marine Technology Development Plan, and the national Science and Technology Committee chaired by the president deliberated and passed this important plan thus setting the foundation for activating and promoting MT development. A project. to develop Marine Technology Road Map(MTRM) is being carried out since June of 2005 for effective undertaking of such endeavor. This paper investigate current issues in MY, MTRM status, establishing and operating MT R&D Expert Institutes, funding resources, etc to provide recommendations for promoting and stimulating MT.

• Journal of the Korean Academic Society of Industrial Cluster
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• v.2 no.1
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• pp.14-27
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• 2008

Ousters have become a key focus of interest and analysis over the last decade or so, informed by the work of the Harvard business economist Michael Porter. Recent research, however, suggests that the classic Porterian conception of clusters needs to be rethought. In particular, the idea that clusters are geogaphically bounded and integrated units whose primary link to the outside world is through the export of goods and services to global markets is highly Questionable, if not untenable. Relational approaches to clusters and regional development stress the importance of the wider networks and 'pipelines' through which knowledge is exchanged with key partners and collaborators located outside of the particular cluster in question. Rather than the main external links being those between leading firms and global markets, firms may engage in a range of global relations with collaborators and suppliers. This paper address the challenge of rethinking clusters in the light of the recent emphasis on global networks md connections, drawing on experience from m old industrial region in Western Europe Scotland. In assessing cluster experiences and initiatives in Scotland, I examine the development of the oil and gas and electronics clusters. In conclusion, I suggest that cluster initiatives me only likely to generate lasting benefits for the region in question if there is significant local ownership md control of key industries and clusters.

• The Korean Journal of Rehabilitation Nursing
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• v.3 no.1
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• pp.15-26
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• 2000

This study examined the relationship between the level of hardiness and self-care agency of persons with a colostomy. The purpose of the study was to explore the effect of hardiness on self-care agency of persons with a colostomy and to identity factors influencing on. The ultimate goal was to help nurses improve the person's self-care agency and to contribute theoretical base for the planning of supportive nursing interventions to increase the level of self care. The subjects for the study consisted of 43 persons aged above eighteen below seventy had had Miles operation and permanent colostomy. The data were collected from July, 1998 to September 15, 1998. The instruments used for this study were the Health-Related Hardiness (Pollock, 1984) and the Self-carer As Inventory Scale(Genden & Taylor, 1988). The Self-Carer As Inventory translated by So Hyang-sook and was modified by author of this study. The data were analysed by using SAS computerlized program and included number, percentage, t-test, ANOVA and Pearson Correlation Coefficient. The results of the study are summarized as follows. 1. Hardiness was significantly related to Self-care agency(r=-0.531. p=0.0002). That is, the higher the hardiness, the higher the level of Self-care agency. 2. In the relationship between general characteristics and traits of persons with a colostomy and hardiness were significant difference in monthly income (F=2.79, p=0.03), problem in stoma management (F=3.29, p=0.01). 3. In the relationship between general characteristics and traits of persons with a colostomy and Self-care agency were significant difference in monthly income (F=2.93, p=0.03), problem in stoma management(F=2.93, p=0.01). Therefore, in order to increase the level of Self-care agency of ostomate Nurses should be helpful to provide them with hardiness training to strengthen their control, commitment and challenge(subconcepts of hardiness).

• Journal of Digital Convergence
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• v.18 no.7
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• pp.111-122
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• 2020

The current study aimed to examine university students' perceptions of the positive effects of L2 oral presentations in terms of communication skills and future employment. The participants were 13 undergraduate students enrolled in L2 oral presentation classes at the beginner or intermediate level. This study followed a qualitative research approach using in-depth and semi-structured interviews as the primary method. The findings revealed that students largely exhibited the benefits of oral presentations in three ways: by enhancing L2 proficiency, building confidence in public speaking, and gaining competitive advantages in their future careers. As a challenge for L2 learners, oral presentations were considered fundamental to develop effective communication skills in academic and professional contexts.

• Journal of the Korean Society of Marine Environment & Safety
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• v.12 no.1 s.24
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• pp.15-22
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• 2006

Marine Technology is the last hope of mankind for resolving predestined issues of food, resources, and environmental problems. facing and realizing this great challenge, domestic industrial, academic and research institutional experts participated in formulating the Marine Technology development plan, and the national science and technology committee chaired by the president passed this important plan thus setting the foundation for activating and promoting MT development. A project to develop Marine Technology Road Map(MTRM) has been carried out since June of 2005 for effective execution of the plan 1his paper reviewed current issues of MT and contents of MTRM, and proposed alternative measures for MT activation and promotion such as the establishment of special institutes for managing MT research and development and the fund raising for MT budget.

• The Journal of Society for e-Business Studies
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• v.23 no.4
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• pp.19-39
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• 2018

Recently, fake news has attracted worldwide attentions regardless of the fields. The Hyundai Research Institute estimated that the amount of fake news damage reached about 30.9 trillion won per year. The government is making efforts to develop artificial intelligence source technology to detect fake news such as holding "artificial intelligence R&D challenge" competition on the title of "searching for fake news." Fact checking services are also being provided in various private sector fields. Nevertheless, in academic fields, there are also many attempts have been conducted in detecting the fake news. Typically, there are different attempts in detecting fake news such as expert-based, collective intelligence-based, artificial intelligence-based, and semantic-based. However, the more accurate the fake news manipulation is, the more difficult it is to identify the authenticity of the news by analyzing the news itself. Furthermore, the accuracy of most fake news detection models tends to be overestimated. Therefore, in this study, we first propose a method to secure the fairness of false news detection model accuracy. Secondly, we propose a method to identify the authenticity of the news using the social data broadly generated by the reaction to the news as well as the contents of the news.

• Journal of Korea Society of Digital Industry and Information Management
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• v.15 no.1
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• pp.133-155
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• 2019

The economic growth has made our lives more prosperous than the past, and the development of science fueled the era of 100-year lifespan. It is now distinct to us that preparation for life after retirement is not a choice but an imperative. In the meantime, outplacement programs have driven many to challenge and start a new chapter in life. This paper measures the characteristics of outplacement programs based on the self-determination factors; empirically examines how those characteristics influence on learning performance through self-efficacy and psychological well-being; concludes by proposing effective and productive ways for young adults and senior employees who are in search for new jobs. To test the research hypothesis, a survey was conducted among job searchers who have been previously provided with outplacement programs. The results are as follows: First, self-perceived autonomy has significant influences on self-efficacy and psychological well-being. Second, self-perceived competency has significant influences on self-efficacy and psychological well-being. Third, perceived relationship has no significant influence on self-efficacy and psychological well-being. Fourth, self-efficacy showed significant influences on psychological well-being, while not showing on learning performance. Fifth, psychological well-being has no significant influence on learning performance. This paper finds its academic significance in its theory-based approach to outplacement service program; research variables and examination are not based on researcher's arbitrary choice. This paper is also practically significant in that it discovered that outplacement service alleviates psychological stress caused by job relocation, and guarantees stable life after retirement.

• Korean Journal of Environmental Agriculture
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• v.39 no.4
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• pp.368-374
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• 2020

BACKGROUND: The residual analysis of polar pesticides has remained a challenge. It is even more difficult to simultaneously analyze multiple polar pesticides. Diquat, paraquat, and chlormequat are typical examples of highly polar pesticides. The existing methods for the analysis of diquat, paraquat and chlormequat are complex and time consuming. Therefore, a simple, quick and effective method was developed in the represent study for simultaneous analysis of diquat, paraquat and chlormequat in animal products, meat and fat using UPLC-MS/MS. METHODS AND RESULTS: Sample extraction was carried out using acidified acetonitrile and water and re- extracted with acidified acetonitrile and combine the extracts followed by centrifugation. The extract was then cleaned up with a HLB cartridge after reconstitution with acidic acetonitrile and water. The method was validated in quintuplicate at three different concentrations. The limits of detection (LOD) and quantification (LOQ) were 0.0015 and 0.005 mg/L, respectively. Matrix suppression effect was observed for all of the analytes. A seven point matrix matched calibration curve was constructed for each of the compound resulted excellent linearity with determination coefficients (R2) ≥ 0.991. Accuracy and precision of the method was calculated from the recovery and repeatability and ranged from 62.4 to 119.7% with relative standard deviation less than 18.8%. CONCLUSION: The recovery and repeatability of the developed method were in the acceptable range according to the Codex Alimentarius guideline. The developed method can be applied for the routine monitoring of diquat, paraquat, and chlormequat in animal products, meat and fat.

• Conservation Science in Museum
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• v.24
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• pp.75-80
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• 2020

X-ray computed tomography (X-ray CT), which is often applied to the investigation of the interior structures of cultural properties, is very useful for studying production methods used in lacquerware that would otherwise be difficult to observe with the naked eye. Lacquerware inlaid with mother-of-pearl is an important subject in the study of traditional Korean craft. However, it can be a challenge to specify the production methods used in the framework of a lacquerware item unless the object has been structurally damaged. Studies of lacquerware inlaid with mother-of-pearl have thus far focused on the techniques of lacquering and of inlaying the mother-of-pearl. Production methods for the framework of lacquerware has received little academic attention. This study conducted X-ray CT on a lacquerware item from the Joseon period to reveal the materials and woodworking techniques used for the framework. The study revealed that softwood was used for the framework, and the post (gidungmok) and apron (soemok) were joined using a three-way miter joint (sambang yeongwi jjaim). Other pieces were joined with nails.