• Proceedings of the Korea Concrete Institute Conference
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• 2002.05a
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• pp.755-760
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• 2002

The concrete structures in marine environment has been used type V cement(sulfate-resisting Portland cement), but according to the study results reported recently, the question has been raised for effect of the resistance to salt attack of the concrete using type V cement. It is increased the demands on the use of mineral admixtures such as fly ash, ground granulated blast-furnace slag instead of type V cement in order to improve the durability of concrete structures. Therefore, this study focused on the durability evaluation of concrete containing fly ash under marine environment, and the tests such as salt attack, carbonation, sulfate attack, and freezing-thawing were performed. Test results showed t]hat the resistance to salt attack, sulfate attack and freezing-thawing was improved, and the carbonation was in some disadvantage compared with normal concrete. Nevertheless, the durability of fly ash concrete would be maintained during the service life of structures.

• Journal of Korean Institute of Industrial Engineers
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• v.31 no.4
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• pp.341-348
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• 2005

This paper is concerned with the question of servicing warranties for repairable items. During the warranty period, each time an item fails the manufacturer has the obligation to restore the item to operational condition either by repairing the item or by replacing it with a new item. In this paper, we consider repair-replacement strategies based on the condition of the failed item. For products with phase-type lifetime distributions where the phases represent the condition of the item, we develop algorithms to determine the expected cost of servicing a warranty and use it in making the repair-replacement decision. Illustrative numerical examples are presented. We also propose a dynamic strategy by taking the expected remaining warranty cost into consideration.

• Journal of the Korean Operations Research and Management Science Society
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• v.25 no.3
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• pp.41-48
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• 2000

We consider the question of warranties for repairable items. During the warranty period, each time an item fails the manufacturer has the obligation to restore the item to operational condition either by repairing the item or by replacing it by a new item. In this paper, we consider a warranty policy for making this decision based on the condition of the failed item. For products with phase-type lifetime distributions where the phases represent the condition of the item, we develop algorithms to determine the expected cost of servicing a warranty and use it in making the repair/replacement decision. illustrative numerical examples are presented.

• Journal of information and communication convergence engineering
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• v.2 no.2
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• pp.97-101
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• 2004

This paper is about the use of existing evaluation methods, which evaluate learning determined by the score of an exam, which is either a multiple-choice type or single choice type question. These scores don't show the objective evaluations that cause some negative opinions about the scores. In this paper, we propose that the evaluation of the methods of self-directed learning use the triangle-type function of the fuzzy theory so that the learner can objectively evaluate their own learning ability. The proposed method classifies the result of learning into three fuzzy grades to calculate membership, and evaluate the result of an exam according to the final fuzzy grade degree as applied to the fuzzy grade sheets.

• Journal of Sasang Constitutional Medicine
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• v.9 no.2
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• pp.263-281
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• 1997

We studied the relationship between each type which was figured out by the question paper given to the patients who chiefly complained feeling of cold and Sasang constitution. The results are as follows. 1. Diagnoses in woman's disease with feeling of cold(冷病) are abdomnal mass(uterine myoma, ovarian cyst), dysmenorrhea, leukorrhea and infertility, orderly in number. They have commoness in the origin of disease which are stagnation of Qi(氣滯) and blood stasis(血瘀), cold(寒), damp(濕) and we can find the causes of feeling of cold are stagnation of blood(血瘀) and harmness of damp(水毒). 2. In the type of survey through the question paper, the largest number of the origin of that disease is cold, the next is blood stasis and dificiency of Qi(氣虛), dificiency of blood(血虛), stagnation of Qi, damp phlegm(濕痰) etc. 3. (1)The numbers by constitutional assortment of object are like this. Taeumin are 23 persons,Soumin 14 and Soyangin 6, so we can find the feeling of cold turn up evenly in all constitution but the number of Soyangin was relatively small. (2)The inclination of constitutional type is the highest in Soumin and they often have and feel strongly disorders of their body. (3)We could find the corelation of theoretical background of Sasang Medicine in constitutional type of survey. 4. (1)The numbers by constitutional assortment of the patients with feeling of cold and numbness(冷痺症) are like this. Taeumin are 16 persons, Soumin 7 and Soyangin 3, as are like the distribution of 3-(1). (2)The inclination of constitutional type is the highest Soumin, so they have multiple type of differentiation of symptoms and signs and their symptoms is old and severe, therefore they need long time for cure. In all, except the symptom with feeling of cold caused by dificiency of the blood and insufficiency of yang(氣虛와 陽虛) that we meet frequently on clinic is numerous, the number of that caused by stagnation of Qi and blood(氣滯와 血滯) alike dysautonomia is also large. And we can find the feeling of cold turn up evenly in all constitution but the number of Soyangin was relatively small. Within the case of Soumin, they have both dificiency of Qi and blood, have complex source, so their symptoms are old and severe and they need long time for cure. In Taeumin, they are of large number with dificiency of Qi and we think thst that are concerned with the symptom of exterior cold.

• The Journal of Industrial Distribution & Business
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• v.8 no.6
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• pp.41-49
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• 2017

Purpose - The purpose of this research is to examine the differences and interaction effects of perceived risk and product attitudes between Korea and Thailand consumers in accordance with price discount and product types. Research design, data, and methodology - A questionnaire survey was conducted in Korea and Thailand. There were a total of 327questionnaires received, and 322 of them were valid. Respondents consisted of 163 Koreans and 159 Thai consumers. Each question is measured in a Likert-type five-point scale. To verify the difference and interaction effects of perceived risk and product attitudes, ANOVA analysis was carried out. Results - This research found that the perceived risk of Thailand consumers in accordance with price discount and product types is confirmed to be larger than Korean consumers. The difference of product attitudes of Thailand consumers is higher than those of Korean consumers. Thus, product attitudes in accordance with country type and price discount types are verified with the interaction effect. The difference of product attitudes in accordance with price discount type and product types are not founded. The main effect was not verified. Conclusions - The finding of this study can be used as useful information to Korean and Thai retailers looking to enter the global market.

• 모자간호학회지
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• v.4 no.1
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• pp.52-67
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• 1994

This study was done to investigate mother's attitude to breast feeding and the type of feeding according to the general characteristics of mother. The study sample consisted of 1696 mothers who had an infant and who were visiting five Hospitals or ten Public Health Centers in Seoul. Data was collected through a question aire from June, 1 to June, 30, 1993. The results are as follows : 1. The types of feeding were artificial feeding 2%), mixed feeding(21.7%) and breast feeding (26.1%). 2. The attitude of mothers to breast feeding was very positive for behavior tendency and cognitive attitude but the emotional attitude was low to moderate. 3. The attitude scores for the mothers were from 27 to 60 and 65% the mothers had scores that were high, 50-60 and mean was 49.86. 4. There was the significance between the general characteristics (type of delivery, obtaining in formation on breast feeding, type of feeding and baby's birth order) and the attitude score of mothers. 5. The attitude scores for the mothers by the general characteristics and type of feeding was not a 2-way interaction but the type of feeding had a main effects.

• Women's Health Nursing
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• v.6 no.1
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• pp.5-17
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• 2000

The purpose of this study is to identify the type of attitude toward the sexual violence and to analyze the structure of subjectivity about the sexual violence. Q-methodological method was used. The Q concourse for this study was formed through literature review, open question and in-depth interview, 171 Q statements were obtained and finally 33 statements were selected. The subjects for Q classifications were 20 persons. The Quanl PC program was used for analysis. The results of the study were as follows : The first type, blaming offenders consisted of 10 subjects has the recognition that victims must not be blamed ; offenders are responsible for any circumstances ; and sexual violence is an infringement of human rights. the second type, blaming victims consisted of 3 subjects has the recognition that victims carelessness is causal factor of sexual violence. They recognized the sexual violence as an identical concept with sexual intercourse. The third type, blaming social moral consisted of 7 subjects has the recognition that the collapse of social ethics and moral gives rise to sexual violence. They recognized the sexual violence as both sexual intercourse and the infringement of human rights. In conclusion, the result leads to understand the type of attitude toward sexual violence in Korean sociocultural reality. Consequently, the results will be conductive to provide guidelines for nursing intervention and education program for preventing sexual violence.

• Journal of applied mathematics & informatics
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• v.17 no.1_2_3
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• pp.605-614
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• 2005

We show that an Artinian O-sequence $h_0,h_1,{\cdots},h_{d-1},h_d\;=\;h_{d-1},h_{d+l}\;>\;h_d$ of codimension 3 is not level when $h_{d-1}\;=\;h_d\;=\;d + i\;and\;h{d+1}\;=\;d+(i+1)\;for\;i\;=\;1,\;2,\;and\;3$, which is a partial answer to the question in [9]. We also introduce an algorithm for finding noncancelable Betti numbers of minimal free resolutions of all possible Artinian O-sequences based on the theorem of Froberg and Laksov in [2].

• The Korean Journal of Applied Statistics
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• v.6 no.1
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• pp.53-66
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• 1993

A Bayesian approach is suggested to the multi-proportions randomized response model. O'Hagan's (1987) Bayes linear estimator is extended to the inference of unrelated question-type randomized response model. Also some numerical comparisons are provided to show the performance of the Bayes linear estimator under the Dirichlet prior.