• Journal of Korean Society of Water and Wastewater
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• v.28 no.1
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• pp.125-134
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• 2014

6 sigma is a management innovation strategy which improves most of all managerial processes including transactional and project based operations such as marketing, purchasing, accounting, and construction. Even though 6 sigma is trying to solve problems from the customer's viewpoint in the scientific manner, project leader feels some difficulties in implementation because of several reasons. Especially the difficulties are prevalent in construction site. This paper investigates the cause of the difficulties through questionnaires, analyzes the investigation results, and verifies the critical success factors of 6 sigma implementation. Factor analysis has been usually employed in reducing quantity of data and summarizing information chaos. In this study, several variables from questionnaires are grouped into just only four factors by the process of factor analysis. The critical success factors are extracted as project management system, implementation mechanism, site condition, and project ownership. Some ideas for each individual success factor are suggested, which are expected to be useful in successful implementation of 6 Sigma in construction site.

• Journal of the Korean housing association
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• v.14 no.5
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• pp.117-128
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• 2003

The purpose of this study is to investigate the effect of functional ability on relocation among the elderly. Longitudinal data from the Asset and Health Dynamics among the Oldest Old (1993, 1995) were analyzed for 6,225 respondents aged 70 or older. Among functional ability measures, difficulties in advanced activities of daily living (i. e., making telephone calls, taking medications, and managing money), lower body activities (i. e., walking several blocks, climbing one flight of stairs, pulling or pushing large objects, and carrying over 10 pounds), and household activities of daily living (i. e., preparing hot meals and shopping for groceries) were the predictors of increased residential move. Difficulties in basic activities of daily living (i. e., bathing, dressing, getting in and out, and using the toilet) were strongly related to increased entrance into an institutional care facility. Efforts to enhance the independent living of the elderly in the community setting should target the compensation of these functional difficulties.

• Journal of Educational Research in Mathematics
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• v.8 no.2
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• pp.485-494
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• 1998

This study is on the theory of Piaget's reflective abstraction and the mechanism of the development of knowledge and the history of algebra and its application to understand the difficulties that many students have in learning algebra. Piaget considers the development of knowledge as a linear process. The stages in the construction of different forms of knowledge are sequential and each stage begins with reorganization. The reorganization consists of the projection onto a higher level from the lower level and the reflection which reconstructs and reorganizes within a lager system that is transferred by profection. Piaget shows that the mechanisms mediating transitions from one historical period to the next are analogous to those mediating the transition from one psychogenetic stage to the next and characterizes the mechanism as the intra, inter, trans sequence. The historical development of algebra is characterized by three periods, which are intra inter, transoperational. The analysis of the history of algebra by the mechanism explains why the difficulties that students have in learning algebra occur and shows that the roles of teachers are important to help students to overcome the difficulties.

• Journal of the Korean Home Economics Association
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• v.38 no.3
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• pp.99-120
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• 2000

This study was undertaken to examine difficulties confronted by interviewees during post-divorce adjustment, and to investigate factors which influence critically to the post-divorce adjustment.. Interviewees were confronted with severe economic difficulties but the post-divorce adjustment was not much influenced by such economic difficulties. Supportive social network such as parents, brothers and sisters, friends, self-help group of single parents was related to the positive post-divorce adjustment. After divorce, some interviewees did not tend to meet their friends. All parents thought their children to be sources of support throughout the divorce process and their post-divorce life. On the other hand, some noncustodial parents felt guilty and a serious deprivation. Divorce initiator factor was not related to the post-divorce adjustment. To the most interviewees, the period before the decision to divorce was the most difficult one.

• Journal of Korean Elementary Science Education
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• v.26 no.5
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• pp.475-488
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• 2007

The purpose of this study was to investigate elementary students' difficulties when they read the illustrations on scientific textbook. 5 illustrations were selected on basis that they had some of the textual/graphical features. The data were collected from open-ended questionnaires and follow-up interviews. To investigate difficulties of reading illustrations, 100 sixth grade students participated in this study and interviews were taken to 9 volunteers among those participants. The results showed that many students had difficulties in the integration of verbal representation and realistic image representation on the illustration, therefore they often misunderstood the meaning of illustration. These results gave several recommendations when we used illustrations as educational materials. Teachers would be better to guide that students could understand illustrations with the integration of the reading of one or more representations.

• Journal of Korea Port Economic Association
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• v.21 no.3
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• pp.83-113
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• 2005

In this study, for purpose of searching for measures to lower the logistics costs which is one of the most difficulties for the small-medium sized manufacturers in Pusan and Kimhae, those manufacturers were surveyed with questionnaire about the facts in the export logistics costs, difficulties related to the costs, and measures they thought for lowering the cost. Taking account of findings from the survey, the comprehensive measures of saving the export logistics costs were to be proposed. In the surveyed manufacturers, the problems they thought over export logistics costs lied in short logistics information and transportation-related difficulties in cargo and distribution, insufficient standardization in packaging and the shortage of material handling equipments in unloading. In transportation, frequent non-fulfillment of in-time shipment, cost increase including over consumption of transportation time due to traffic jam, and the biased heavy use of inland transportation were pointed out as problems. In customs clearance, logistics information, and marine insurance, addressed were complexity in custom clearance and bonded transportation procedures, and the shortage of software and hardware to construct logistics information system.

• Korean Journal of Child Studies
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• v.25 no.6
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• pp.279-298
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• 2004

In this study, a sample of 249 mothers of 5- to 7-year-old kindergarteners responded to 4 questionnaires regarding maternal parenting stress, efficacy and behavior, and children's social competence. Teachers of the children also rated social competence. Correlations and regressions showed that parenting stress and difficulties in parenting were negatively related and parenting confidence and behavior were positively related to social competence, respectively. Parenting stress was the most influential variable to explain social competence. Maternal parenting stress was negatively related to parenting behavior and confidence, and it was positively related to difficulties in parenting. Parenting confidence was positively related and difficulties in parenting were negatively related to the subscales of parenting behavior, respectively. Parenting efficacy tended to play a mediating role between maternal parenting stress and parenting behavior.

• Education of Primary School Mathematics
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• v.4 no.1
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• pp.75-82
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• 2000

The purpose of this study is to investigate the recognition fur mathematics subject in the 5th and 6th graders elementary students. To carry out this study, the 5th and 6th graders recognition as learning mathematics subject was investigated by questionaire. The questionaire was analysed by using frequency and percentage. The 5th and 6th graders had difficulties in the hierarchical problem because mathematics is very systematic and hierarchical, and other had difficulties in studying mathematics because the explanation of the problem solving process in the textbook was not detailed. Others had difficulties in studying mathematics because of quick loaming progress, in applying the formulas and property of mathematics.

• International Journal of Computer Science & Network Security
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• v.21 no.11
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• pp.119-130
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• 2021

This study aimed at Evaluate Students' Interaction and Happiness in Distance Learning Among Students with Learning-Difficulties, by identifying the level of students' interaction in distance education and differences between them, as well as its impact on their happiness to learn. To achieve the aim of the study, two scales were designed for this purpose and were applied to a sample consisting of (310) individuals. The results showed that the level of students' interaction through the e-learning platform was at a high level. The results also showed that there was no statistically significant difference between the mean scores of males and females in the scale of students' interaction through the e-learning platform. There was no statistically significant difference between them in their happiness for distance learning via the online platform. There were also no statistically significant differences related to the grade variable in the level of interaction through the electronic platform and in the happiness to learn, while there was a positive statistically significant effect of interaction through the electronic platform on students' happiness to learn.

• International Journal of Advanced Culture Technology
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• v.11 no.2
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• pp.284-290
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• 2023

This study was a phenomenological study to examine the meaning and structure of the difficulty of delivery. Participants in this study conducted deep interviews with seven female 20 to 24. The interview data was conducted through the process of analysis and interpretation using the Giorgi method. As a result of study, 12 themes were derived and 4 categories. As a result of the analysis, young women's thoughts on observing delivery consisted of 'fear', 'powerlessness', 'disgust', and 'inevitable fate'. Based on the above meaning, the structure of young women's thoughts on delivery was found to be a point of view that it is regrettable that delivery compensates for all difficulties and pain with the joy of birth. Accordingly, it is proposed to develop and apply a program that can actually alleviate the anxiety, fear, and physical discomfort experienced by women in childbearing age through childbirth.