의사결정나무 알고리즘은 데이터마이닝 기법중 하나인데 관심이 되는 데이터들에 대하여 분류 및 예측을 가능하게 해준다. 이 기법은 데이터 형태의 특성을 분석할 수 있고 산업재해 형태의 차이점을 찾아내는데 사용될 수 있다. 본 연구에서는 산업재해 데이터의 특성을 파악하고자 C4.5 알고리즘을 사용하였다. 본 연구에서 분석을 위하여 사용된 데이터는 강원도에서 발생한 2년 동안의 산업재해 관련 데이터로서 연구에 적용된 데이터의 수는 19,909개로 구성되어 있다

In this paper, we discussed a methodology for education of German as a foreign language. In order to see how grammar and a function of communication should be linked, we investigated the way how grammar is dealt with in a chapter teaching “showing the way” as a communicational situation in 8 different highschool textbooks. To maximize the efficiency of teaching a specific grammar factor, we tried to establish which one should be linked to this communicational situation. Two conditions are necessary for this. Firstly, typical sentences for “showing the way” should be expressed by the grammar factor. Secondly, the grammar part associated with the expressions used for the communication situation should be more closely related to this one than any other communication situation. We concluded that the most efficient grammar factors that can be associated with the communication situation, “showing the way” are dative preposition and imperative, and that imperative can also be effectively associated with other communication situations such as “birthday and invitation”, and “health and treatment”.

Growth possibility is big to culture tourism resources and representative tourist resort of the Korea that use view of nature photon circle properly such as ceramics that target area possesses. Area development plan through growth possibility should be arranged to international ceramics production complex and distribution complex. Therefore, Marketing analyzing future district theme establishment and strength in priority via past and present of target area.

The purpose of this study is to develop unit objectives in the view of application and systematic approach, reflecting the main features of the 7th curriculum revision which include process-oriented approach (POA). First, this study suggests that it is a better way to use the traditional objectives statements flexibly than not to use them. Next, objectives are stated mainly with contents and learner’s behaviors. But, this statement doesn't fully cover the features of POA. So, one alternative way is that content and behavior domains include the process-related factors characterized as procedure (or task) and learner-centeredness (or humanism). Finally, to suggest the factors of communicative unit objectives, all the objectives in recently and widely used course books are analyzed on the basis of Valette’s taxomony. In this analysis, it is known that content domain with language, socio-linguistics and communicative parts includes the factors such as fluency, authenticity, topic, activity, task, and behavior domain with cognitive and psycho- motor parts emphasizes and reflects creative expression and humanism (or affective factors).

  In order to implement Artificial Intelligence, various technologies have been widely used. Artificial Intelligence are applied for many industrial products and machine tools are the center of manufacturing devices in intelligent manufacturing devices. T

As Korea has approached the aging society, older Koreans have become an important force in restaurant sales today. To succeed with this silver market, it is important for restaurant managers to know who they are and what factors influence older Koreans' eating-out decision making process. The purpose of this study was to investigate the effect of the silver consumers' education level on eating-out decision making process. Data were collected from 178 older consumers above 55 years old and analyzed using the descriptive statistic analysis, MANOVA, and one-way ANOVA. The results showed that the elderly consumers' education level significantly influenced the decision making process in determining where to eat out. Significant differences were found in the Problem Recognition Step(Wilks' Lambda=0.817, F=2.991), Information Search Step(Wilks' Lambda=0828, F=2.218), Alternative Evaluation Step II(Wilks' Lambda=0.741, F=3.596), Purchase Decision Step(Wilks' Lambda=0.859, F=2.223), and the Post-Purchase Behavior(Wilks' Lambda=0.885, F=1.780). The higher education level was, the more directly involved in the eating out decision process. The elderly consumers with university education were likely to 'propose to eat out by themselves'(F=9.346), to obtain restaurant information from the 'printed materials'(F=7.452), to go to 'family restaurant'(F=9.057), 'Japanese restaurant'(F=8.7891) and 'fine dining restaurants'(F=3.936), and to directly express their emotion when they had complaints about restaurant service(F=3.206). In conclusion, older Koreans will become more healthy and wealthy which means the dining out activity will be an important part of their life to socialize with people. Therefore, food service operations should consider the elderly consumers' needs and expectation of restaurant services and actively position themselves for this new market segment.

The consequences of rapid industrial advancement, diversified types of business and unexpected industrial accidents have caused a lot of damage to many unspecified persons both in a human way and a material way Although various previous studies have been analyzed to prevent industrial accidents, these studies only provide managerial and educational policies using frequency analysis and comparative analysis based on data from past industrial accidents. The main objective of this study is to find an optimal algorithm for data analysis of industrial accidents and this paper provides a comparative analysis of 4 kinds of algorithms including CHAID, CART, C4.5, and QUEST. Decision tree algorithm is utilized to predict results using objective and quantified data as a typical technique of data mining. Enterprise Miner of SAS and AnswerTree of SPSS will be used to evaluate the validity of the results of the four algorithms. The sample for this work chosen from 19,574 data related to construction industries during three years (2002~2004) in Korea.

This paper is intended to develop a Bayesian decision model for the repair of deteriorating system. A non-homogeneous Poisson process with a power law failure intensity function is used to describe the behavior of the deteriorating repairable system. The decision on whether to have minimal repair or imperfect repair should be made on the occurrence of a failure. However, it is difficult to make a reasonable decision due to many uncertainties intrinsic in repair actions. In this paper, prior distributions are used in order to analyze the uncertainties embedded in the decision alternatives. Especially, a prior distribution for imperfect repair with probabilistic reduction in the failure intensity is proposed. In addition, mathematical expressions to calculate the expected prior loss of each repair alternative are proposed.

In this paper we extend the classical decision model under uncertainty to a more general case. We propose an expected utility-uncertainty model and we can make a decision by trading off between a measure of uncertainty and a measure of expected value. As a risk analysis model, the expected utility-uncertainty model can be seen to be reasonable and flexible for states of nature or individuals' preferences. Moreover, the model can explain some decision paradoxes.

Supply Chain Management(SCM) system is a critical investment that can affect future competitiveness and performance of a company. Selection of a right SCM system is one of the critical issues. This paper provides the characteristic factors of SCM system selection and the SCM system evaluation and selection model based on Analytic Hierarchy Process(AHP). The proposed model can systematically construct the objectives of SCM system selection to support the business goals. A empirical example demonstrates the feasibility of the proposed model and the model can help a company to make better decision-making in selecting SCM system.

In order to implement Artificial Intelligence, various technologies have been widely used. Artificial Intelligence are applied for many industrial products and machine tools are the center of manufacturing devices in intelligent manufacturing devices. The purpose of this paper is to present the design of Decision Support Agent that is applicable to machine tools. This system is that decision whether to act in accordance with machine status is support system. It communicates with other active agents such as sensory and dialogue agent. The proposed design of decision support agent facilitates the effective operation and control of machine tools and provides a systematic way to integrate the expert's knowledge that will implement Intelligent Machine Tools.

In this paper we extend the classical decision model under uncertainty to a more general case. We propose an expected utility-uncertainty model and we can make a decision by trading off between a measure of uncertainty and a measure of expected value. As a risk analysis model, the expected utility-uncertainty model can be seen to be reasonable and flexible for states of nature or individuals' preferences. Moreover, the model can explain some decision paradoxes.

This paper is intended to develop a Bayesian decision model for the repair of deteriorating system. A non-homogeneous Poisson process with a power law failure intensity function is used to describe the behavior of the deteriorating repairable system. The decision on whether to have minimal repair or imperfect repair should be made on the occurrence of a failure. However, it is difficult to make a reasonable decision due to many uncertainties intrinsic in repair actions. In this paper, prior distributions are used in order to analyze the uncertainties embedded in the decision alternatives. Especially, a prior distribution for imperfect repair with probabilistic reduction in the failure intensity is proposed. In addition, mathematical expressions to calculate the expected prior loss of each repair alternative are proposed.

Jin, Jae-Hee. 2004. Aspects of Teacher-centered Communication in Conversations between Teachers and Learners in the Korean Language Classroom. Sociolinguistic Journal of Korea, 12(2). This paper examines how and why asymmetrical relationships are constituted through verbal interactions between teachers and students in the Korean language classroom. According to van Dijk (1989), 'power' in institutions such as hospitals or classrooms is best conceptualized as ‘group power asymmetrical relations’ between groups. As is the case for institutional members, members of dominant groups may derive their individually exercised power from the overall power of the group to which they belong. Speakers often possess an institutional role and their conversations are backed by the power or authority of the institution. From this perspective, this paper examines how power is being exerted and assigned in conversations between teachers and students in the Korean classroom. First, this research examined if the turns at talk for the participants (teacher and students) were equally distributed. The results showed that the teacher took about 50% of the total turns at talk, which is about eight times as many turns taken by each student. This indicates that the flow of classroom conversation starts from the teacher, or in other words, is teacher-centered communication. Second, this research considered inequality that occurs during problem solving meaning negotiation. Research results also showed that in 165 negotiated exchanges, over 85% were initiated by the teacher, which underscores the extremely asymmetrical instigation of conversation in Korean language classrooms. Student deficiencies in fluency and initiation, teacher questioning methodology and dialogue guidance, the teacher's almost exclusive right to choose the topic, the excessive adaptation of students to the classroom environment as well as the nationality of students were all factors contributing to this phenomenon.

The purpose of this paper is to value the intercultural communicative competence model in English language assessment. As for intercultural communication, it becomes of utmost importance that (1) the inappropriateness of the conventional communicative competence models be demonstrated, and (2) altemative models from interculturally communicative needs be proposed and their use defended. Qualitative methodolgy and narrative inquiry are needed to make the assessment of intercultural communicative competence press forward in Korea.