• Korean Journal of Child Studies
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• v.13 no.2
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• pp.229-240
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• 1992

Although play is a key element in child development, little research has been done on how play is conceptualized by adults directly involved with children on a daily basis. The purpose of the study was to determine meanings of the concept "play" held by mothers of preschool children in Korea. Specifically, the study sought to determine Korean mothers' conceptions of the nature and functions of play, and their conceptions of play in contrast to work. An open-ended/semi-structured interview instrument was constructed to generate research data. Interview questions focused on three content categories: (1) the nature of play, (2) the functions of play, and (3) conceptions of work. Questions in each content category consisted of four distinct types: (1) experience/behavioral, (2) opinion/value, (3) feeling, and (4) knowledge. The instrument was pilot-tested with two subjects, revised, and administered to eleven mothers of preschool children. Interview data were subjected to domain and taxonomic analyses. Analyses yielded two principal themes: (1) Play is viewed as an intrinsically motivated and pleasurable activity; (2) while play and work could be consonant, the values inherent in play and work are generally in opposition.

• International Journal of Knowledge Content Development & Technology
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• v.8 no.3
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• pp.5-28
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• 2018

Socialization of doctoral students refers to the process through which they acquire various types of information about their work, department, university, and discipline for their future careers. This study aims to investigate information behaviors, with emphasis on identifying types of information exchanged in mentoring between faculty advisors and their doctoral students in library and information science (LIS). As a first step to developing a content framework for LIS doctoral mentoring, the author interviewed ten LIS doctoral students from nine U.S. universities. Based on data from these interviews, the author identified sixteen types of information exchanged: language, history, coursework, research, skills, teaching, networking, structure, politics, goals, strategies, values, norms/tradition, rules/policies, benefits, and personal life. In comparison with a content framework used, four dimensions were newly added. In addition to the identification of content dimensions, the author observed four meaningful contextual levels to which the content types can be applied: work, department/school, university, and discipline. The qualitative data also showed that interpersonal factors of advisees/advisors and contextual factors might relate to information exchange in doctoral mentoring. In a following paper, the author will present the results of a follow-up survey that tests and generalizes the findings of this study.

• Journal of the Korean Home Economics Association
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• v.34 no.3
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• pp.173-185
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• 1996

The purpose of this study were to understand the types of preferences to housewives' employment of husbands and wives, and to explore the differences in the personal, the family, and the job-related variables regarding such types of preferences. For this study, the employed housewives with children aged under 10 year were surveyed. The results of this study were as follow; 1) Types of perferences to housewives' employment of husbands were smaller compared to wives'. This may mean that husbands' traditional values related to child rearing and education, and housework influenced on their preferences to wives' employment. 2) There were significant differences in the types of preferences to housewives' employment regarding the types of wives' occupation. Wives working in the white color jobs were prefered themselves' employment more than wives working in the blue color jobs. 3) The group that both wives and husbands prefere housewives' employment was more positively perceived the effects of women's employment on both wives themselves and their children. Also such couples were satisfied more than and felt family-job strain less than other groups.

• Journal of Korean Society of Transportation
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• v.31 no.1
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• pp.37-46
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• 2013

Lane closure in freeway work zone due to maintenance and repair of freeway facilities results in abrupt change of traffic flow. Sudden change of traffic flow results strong interactions among vehicles, and reduces capacity compared to the ordinary traffic condition. Such capacity reduction is likely to cause congestion, traffic queues, and economic loss cost. This study aims to determine the base capacity for a short-term freeway work zone that can be used to establish a work zone schedule in advance without any traffic impact. First, the research collected detector data and schedule data of road works on all freeways in Korea. Second, the research determined 23 study sites finding the capacity values of work zone after matching two kinds of data. All study sites had varying characteristics regarding traffic flow being adjacent to work zone during road works. The capacity values were reviewed in terms of lane closure configuration, the types of work, and design speed. Finally, research proposed capacity values for a short-term freeway work zone with the design speeds of 100 kph, 120 kph and 1,700 pcphpl, 1,750 pcphpl, respectively.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.06a
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• pp.157-158
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• 2020

In order to calculate construction costs properly, it is necessary to add the weight that reflects different worksite conditions. The implementation of the weight, however, is difficult because it is impossible to determine whether wight should be added in basic work or whether weight values are overlapped. Special worksite conditions further complicate the matter. Furthermore, overlapping implementation of weight values result in overestimation of construction costs. The current study clearly analyzed the weight value items in the current construction cost calculation standards, and analyzed the weight value items included under the basic productivity category to propose an improvement of weight standards. Basically, the estimating standards provide 140 weight value items, with different levels of weight given to each item. Among 1,333 items in the estimating standards, 140 include weight values. Some items have two types of weight values.

• Journal of the Korea Institute of Building Construction
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• v.21 no.2
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• pp.157-163
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• 2021

The accident rate is obtained by dividing the number of accidents by the number of regular workers. In the case off construction work, however, the accident rates are not accurately figured out, because they use the approximate number of regular workers, which is estimated based on the amount of construction work and the labor ratio. In addition, the current accident rate estimation method does not reflect the characteristics of construction types, such as building, civil, plant, etc. This study is conducted with the aim of presenting a supplementary method of accident rate assessment that incorporates the characteristics of type of construction. For the purpose of this, correlation and regression analysis are executed to verify the relationships between number of accidents and the amount of construction contract, and several equations are derived which shows the relationship between the number of accidents by accident types and amount of constract by construction types. The result shows that the non-residential work amount and the number of accidents showed a proportional relationship, while the civil work amount and the number of accidents showed an inversely proportional relationship. The results of this research are expected to calibrate the construction accident rates and to be used as an auxiliary indicator to determine the trend of annual accident rates by comparing the values with usual years.

• Coupled systems mechanics
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• v.12 no.4
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• pp.315-335
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• 2023

The building sector has seen a huge increase in the use of lightweight concrete recently, which might result in saving in both cost and time. As a result, the study has been done on various types of concrete, including lightweight (LC), heavyweight (HC), and ordinary concrete (OC), to understand how they react to earthquake loads. The comparisons between their responses have also been taken into account in order to acquire the optimal reaction for various materials in building work. The findings demonstrate that LWC building models are more earthquake-resistant than the other varieties due to the reduction in building weight which can be a curial factor in the resistance of earthquake forces. Another crucial factor that was taken into study is the combination of various types of concrete [HC, LC, and OC] in the structural components. On the other hand, the bending moments and shear forces of LC had reduced to 17% and 19%, respectively, when compared to OC. Otherwise, the bending moment and shear force demand responses in the HC model reach their maximum values by more than 34% compared to the reference model OC. In addition, the results show that the LCC-OCR (light concrete column and ordinary concrete roof) and OCC-LCR (ordinary concrete for the column and light concrete for the roof) models' responses have fewer values than the other types.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.805-814
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• 2008

This study focused on the resilient modulus prediction model, which is the functions of mean effective principal stress and axial strain, for three types of railroad trackbed materials such as crushed stone, weathered soil, and crushed-rock soil mixture. The model is composed with the maximum Young's modulus and nonlinear values for higher strain in parallel with dynamic shear modulus. The maximum values is modeled by model parameters, $A_E$ and the power of mean effective principal stress, $n_E$. The nonlinear portion is represented by modified hyperbolic model, with the model parameters of reference strain, ${\varepsilon}_r$ and curvature coefficient, a. To assess the performance of the prediction models proposed herein, the elastic response of a test trackbed near PyeongTaek, Korea was evaluated using a 3-D nonlinear elastic computer program (GEOTRACK) and compared with measured elastic vertical displacement during the passages of freight and passenger trains. The material types of sub-ballasts are crushed stone and weathered granite soil, respectively. The calculated vertical displacements within the sub-ballasts are within the order of 0.6mm, and agree well with measured values with the reasonable margin. The prediction models are thus concluded to work properly in the preliminary investigation.

• Journal of the Korean Regional Science Association
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• v.13 no.2
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• pp.143-155
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• 1997

This study aims at drawing implications for Korea's urban growth management policies from U.S.A's experience on this issue. This study analyzes two types of contradictions in planning and implementing urban growth management policies: 1) value conflicts in goal setting and 2) contradictions among different level of governments (local, province, nation). As mentioned by Campbell (1996), there are three types of conflicts in objective values (efficiency, equity, and environment protection): property contradiction between economic growth and equity, resource conflict between efficiency and environment protection, and development conflict between equity and environment protection in urban growth management policies. In implementing urban growth management three types of conflicts in goal values should been taken into consideration. Contradictions among local governments, province, and central government are also found in implementing growth management policies. The lessons from the United State are as follow: 1) growth management plans are initiated by the local government and during the planning process adjacent local governments review a local government's growth management plans and give inputs for the plan, 2) local government and State work together for growth management planning and specially, the State provides technical and financial assistance to local government, and 3) the State plays leading roles in local government's planning and implementing of growth management policies with carrot and stick policy.

• Journal of dental hygiene science
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• v.7 no.2
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• pp.107-112
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• 2007

The purpose of this study was to investigate the job value type of dental hygiene students. The questionaire given to 823 dental hygiene students from three college in Gwangju and Chunnam Colleges. The results of this study were as follows: 1. dental hygiene students, job value type were divided 6 categories: Competency, Contribution, Achievement, Reward, status, stability. 2. The higher status was at c college and at good relationship group and more perceived bad health and at work experience group. 3. The higher was reward at c college and lower grade and at good relationship group and more perceived good health and at work experience group. 4. The higher was status at c college and lower grade and lower age and at work experience group. 5. The higher was competency at c college and at good relationship group and more perceived bad health and .at work experience group. 6. The higher was contribution lower grade and more perceived bad health and at work experience group. 7. The higher was achievement at c college and at good relationship group and more perceived good health group.