• Industrial Engineering and Management Systems
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• v.11 no.1
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• pp.26-29
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• 2012

In order to deal with the classification problems of type-2 fuzzy training samples on generalized credibility space. Firstly the type-2 fuzzy training samples are reduced to ordinary fuzzy samples by the mean reduction method. Secondly the definition of strong fuzzy linear separable data for type-2 fuzzy samples on generalized credibility space is introduced. Further, by utilizing fuzzy chance-constrained programming and classic support vector machine, a support vector machine based on type-2 fuzzy training samples and established on generalized credibility space is given. An example shows the efficiency of the support vector machine.

• Research in Mathematical Education
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• v.11 no.4
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• pp.265-274
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• 2007

The middle school mathematics teachers of the countryside in western China have little chance to further their education and strengthen their research abilities. In this program, we should offer them chance to learn new educational ideas and teaching methods. There will be demonstration lectures and video teaching of course standards followed by group discussion and personalized instructions. These activities prepare the teachers to give their own demonstration lectures. This again is followed by additional personalized instructions. The teachers come to the program with very limited knowledge of these techniques but will leave with the ability to write educational scientific research papers.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• v.3 no.3
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• pp.187-189
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• 2022

Nationalism can solidify national unity and ideology but sometimes causes conflicts in human societies. Interestingly, it affects tiger conservation as well. Collaborative efforts are imperative for tiger conservation due to their vast home ranges which cross political boundaries and the limited financial resources. However, tiger states have not shown substantial commitment to collaboration. The nationalism that is entrenched in tiger conservation provides a credible explanation for this passive collaboration among nations. One type of nationalism occurs within a country by favoring one particular subspecies over another. The other type of nationalism occurs when former range countries want tigers. Instead of contributing to saving tigers in current habitats, they are eager to bring tigers back to their political boundaries regardless of the tremendous financial resources required and the lower chance of success. Considering nationalism in tiger conservation, tigers, just like humans, may need a passport for a better chance to survive.

• International conference on construction engineering and project management
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• 2005.10a
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• pp.881-885
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• 2005

Scheduling repetitive projects under limitations on the amounts of available resources (labor and equipment) has been an active subject because of its practical relevance. Traditionally, the limitation is specified as a deterministic (fixed) number, such as 1000 labor-hours. The limitation, however, is often exposed to uncertainty and variability, especially when the project is lengthy. This paper presents a stochastic optimization model to treat the situations where the limitations of resources are expressed as probability functions in lieu of deterministic numbers. The proposed model transfers each deterministic resource constraint into a corresponding stochastic one and then solves the problem by the use of a chance-constrained programming technique. The solution is validated by comparison with simulation results to show that it can satisfy the resource constraints with a probability beyond the desired confidence level.

• Proceedings of the Korean Magnestics Society Conference
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• 2003.12a
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• pp.241-241
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• 2003

• Journal of the Korean Society of Food Culture
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• v.11 no.2
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• pp.169-178
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• 1996

The purpose of this study was to get an information on hotel cook. So the food and beverage (F and B) enterprise is one of the most promising industry on post-industry society, and the cook is real agent to lead the F and B enterprise, we need to have a data, information and knowledge on cook to improve a culinary art training program and working environment. This study was surveyed by 216 cook to work for deluxe hotels at Pusan. The results were summarized as follows: 1. The almost cook worked with restaurant for $8{\sim}9$ hours/day, and a half of cook earned a million won in a month. A higher grade cook worked longer hours and earned more money than a lower grade one. 2. The most popular workplace of the cook was Western restaurant, the male cook working at a Western restaurant were more than female, the more female cook and novices worked at a Korean restaurant. 3. The most popular qualification that the cook take were a western culinary art one, and next were Korean one and Japanese one. The 77.8% cook worked at the place that fitted in with their culinary art qulification. 4. A half of cook insisted that they were a expert of western culinary art, and the next was the Korean, Japanese one in order. 5. The cook were unsatisfied with pay, work environment, human relation and promotion, and if they change their workplace, a lot of cook wished to manage their own restaurant. 6. The 63.4% of cook changed their workplace more than a time. The male cook got a more chance to change workplace than female one. The higher grade cook got a more chance to charge workplace. Almost cook got a no chance to study a culinary art at overseas. The most favorite place that the cook want to visit for studying was Europe, and next were Japan, America, Southeast Asia in order.

• Korean journal of food and cookery science
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• v.13 no.2
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• pp.157-167
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• 1997

This study was carried out to get an information on hotel Cook. We need to have a data, information and knowledge on Cook to improve a culinary art training program and working environment. This study was surveyed by 203 Cook to work for deluxe hotels at Bomun, Kyongju. The results were summarized as follows. 1. The great part (81.8%) of the Cook were a male, a half (53.2%) of the Cook were in their twenties or thirties. In academic background, 56.7％ of the Cook graduated from senior high school and in career background, 44.4% of the Cook had under 5 years at food enterprise. 2. The almost of the Cook (83.3%) worked with restaurant for 8∼9 hours/day and 66.3% of the Cook earned a million won in a month. The higher grade Cook worked longer hours and earned more money than a lower grade one. 3. The most popular workplace of the male Cook were Western style restaurant, but one of the female Cook were a Korean style restaurant. 4. The Cook have 0.9 unit Cook qualification per one person and the most popular Cook qualification were a Western style culinary art. 5. A half of the Cook asserted their expert skill in Western style Cook, and a third Cook asserted their expert skill in Korean style Cook. 6. A great part of the Cook was unsatisfied with pay (49.2%), work environment (16.6%), human relation (10.4%), and if they have a chance of workplace transfer, 38.8% of the Cook wished to manage their one restaurant. 7. 66.5% of the Cook had a workplace transfer more than a time. The higher grade Cook had more chance to change workplace. Almost of the Cook had no chance to study a culinary art at overseas.

• Journal of Korea Water Resources Association
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• v.42 no.4
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• pp.281-295
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• 2009

This study estimates the value of irrigation water in Korea using an economic programming model that is constructed with all the resource endowment constraints, technology restrictions and policy variables. The variability and uncertainty of water resource endowment are incorporated into the model through the chance-constrained technique. Solving the profit maximization problems with gradually reduced water endowments, we derive a series of shadow values of irrigation water. It has been found that uncertainty in water supply raises the damage from water loss, and the marginal damage increases in water loss.

• Journal of Korean Institute of Industrial Engineers
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• v.6 no.2
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• pp.21-29
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• 1980

This paper deals with the capital budgeting problem of a firm where investments are risky and interrelated. The established models might be classified into two categories; One is the chance-constrained programming model and the other is the expected utility maximization model. The former has a rather limited objective function and does not consider the risk in direct manner. The latter, on the other hand, might lead to a wrong decision because it uses an approximate value of expected utility. This paper attempts to extend the applicability of the chance-constrained programming model by modifying its objective function into a more general form. The capital budgeting problem is formulated as a nonlinear 0-1 integer programming problem first, and is formulated into a linear 0-1 integer programming problem for finding a lower-bound solution of the original problem. The optimal solution of the original problem is then obtained by branch & bound algorithm.

• Journal of Korean Society of Transportation
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• v.26 no.5
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• pp.175-184
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• 2008

Uncertainties are unavoidable in engineering applications. In this paper we propose an alpha reliable multi-variable network design problem under demand uncertainty. In order to decide the optimal capacity enhancement, three performance measures based on 3E(Efficiency, Equity, and Environmental) are considered. The objective is to minimize the total budget required to satisfy alpha reliability constraint of total travel time, equity ratio, and total emission, while considering the route choice behavior of network users. The problem is formulated as the chance-constrained model for application of alpha confidence level and solved as a lexicographic optimization problem to consider the multi-variable. A simulation-based genetic algorithm procedure is developed to solve this complex network design problem(NDP). A simple numerical example ispresented to illustrate the features of the proposed NDP model.