• 한국컴퓨터정보학회논문지
• /
• 제21권2호
• /
• pp.113-122
• /
• 2016

This study investigates how anticipated value(attainment value, intrinsic value, utility value, and reward value) and self-efficacy in providing information have an influence on continuance intention to provide information in the context of online community or social media. We propose a conceptual model for examining the framework for the effect of anticipated value on attitude toward providing information, and the effect of attitude toward providing information and self-efficacy in providing information on continuance intention to provide information. Proposed research model is empirically assessed using the survey data obtained from 221 respondents in Korea. Results show that attainment value and intrinsic value have a significant impact on attitude toward providing information, whereas utility value and reward value are found to be insignificant. In addition, attitude toward providing information and self-efficacy in providing information are positively and significantly related to continuance intention to provide information.

• 전자공학회논문지
• /
• 제53권2호
• /
• pp.62-69
• /
• 2016

본 논문에서는 대화력전의 목표달성에 대한 평가척도를 선정하고 평가척도의 최적값을 만족하는 청군의 타격자원의 합리적인 조합과 목표달성시간의 회귀식을 도출하고자 하였다. 또한 현실세계에서 회귀식을 도출하는 일련의 과정을 연구방법론적 관점에서 제시하고자 하였다. 이를 위해 현재 북한과 대한민국이 보유하고 있는 무기체계들의 정보를 이용하여 대화력전을 단순화한 시뮬레이션을 만들어 목표달성시간을 도출하였다. 시뮬레이션에서는 대화력전을 탐지, 결정, 타격의 세 단계로 나누었다. 탐지에는 난수를 활용한 확률을 적용했고 결정과 타격은 고정된 상수를 적용시켰다. 고정된 적에 대해서 목표달성시간을 도출하였으며 목표달성시간이 최단시간으로 나오는 것이 시뮬레이션의 최적값이라고 판단했다. 시뮬레이션의 목표달성시간을 바탕으로 미니탭의 반응표면분석법을 이용하여 고정된 홍군에 대한 청군 무기체계의 최적조합 및 회귀식을 도출하였다. 도출된 회귀식은 2-표본 t검정을 이용하여 검증하였다.

• 한국조경학회지
• /
• 제26권3호
• /
• pp.90-103
• /
• 1998

The purposes of this study are to estimate the economic value and reasonable entrance fee of the Yeido Park, which is under construction in Seoul, by conduct the face-to-face interview. A total of 645 daults were selected by two stage cluster sampling. The senario was designed to meet the requirements for doubgle-bounded dichotomous choice CVM, and distributed with the photograph to epict and compare the current and suggested conditions. A donation vehicle and entrance fee were utilized to find the possibility of strategic behaviors and protest zero, and to make the data estimatable tfor interval censored survival analysis. Date was calibrated by the survival analysis to eleminate the 'fat-tail problem'. Weibull distribution was assumed as a baseline distrubution. The mean WTP of donation and entrance fee was ￦5,281 and ￦783, respectively. The economic value of this park was determined by aggregating the mean value, giving a total WTP for the population of ￦36,861,645,000. This economic value was composed with the use value and existence value. The calibrationi of the Weibull proportional hazard model showed that nearness to the park, age, intention to isit the park, and educational attainment were significant independent variable to influence an amount of donation.

• 노동경제논집
• /
• 제40권3호
• /
• pp.1-28
• /
• 2017

본 연구는 한국노동패널조사 1-17차 자료에서 추출한 부자쌍(父子雙)을 이용하여 학력이 소득에 미치는 영향을 세대별로 비교하고, 자녀의 학력이 부자간 소득계층 대물림에 미치는 영향을 분석함으로써 계층이동 사다리로서의 교육의 역할을 점검했다. 분석 결과, 학력이 소득에 미치는 영향이 아버지 세대에 비해 자녀 세대에서 최대 70% 가까이 감소한 것으로 나타나 과거에 비해 교육의 계층이동 사다리 역할이 축소되었음을 확인하였다. 또한 아버지의 소득계층을 상위 50%와 하위 50%로 구분한 뒤 자녀의 학력이 부자간 소득계층의 대물림에 미치는 영향을 분석한 결과, 상위 50% 표본에서는 자녀의 교육연수 1년 증가 시 부자간 고소득계층 대물림 확률이 최대 7.0% 증가하는 것으로 나타났으나 하위 50% 표본에서는 자녀의 교육연수가 부자간 저소득계층 대물림 확률에 통계적으로 유의한 영향을 미치지 않는 것으로 나타났다. 이러한 결과는 교육이 부(富)의 대물림 확률은 높이면서 빈곤의 대물림 확률을 낮추는 데에는 기여하지 못 해 결국 소득이동성을 떨어뜨리는 방향으로 작용하고 있다는 것을 의미한다.

• 한국수학교육학회지시리즈A:수학교육
• /
• 제60권3호
• /
• pp.341-362
• /
• 2021

본 연구의 목적은 예비교사들이 수리논술 평가문항 개발을 위한 그룹 활동에서 참여하는 동기의 질적 특징을 탐구하는 데 있다. 이에 예비교사들을 대상으로 그룹 학습 활동에 관한 개인적 요인과 실천적 역량(수리논술 평가문항의 개발, 자료 수집, 수정, 보완)에 관한 맥락적 요인을 분석하였다. 그 결과, 그룹 학습 활동에 관한 개인적 요인은 달성 가치, 유용 가치, 내재 가치에 관한 자율성이 주요 특징으로 나타난 반면, 실천적 역량에 관한 맥락적 요인은 과제, 권위, 그룹 편성이 과제 가치에 긍정적 영향을 주는 것으로 나타났다. 이를 통해 예비교사의 학생평가 전문성을 함양하기 위한 교육 과정 설계에 있어 구체적 아이디어를 제안할 수 있다.

• 간호행정학회지
• /
• 제9권1호
• /
• pp.19-30
• /
• 2003

Purpose : The concept of organizational socialization has been regarded as an abstract concept of organizational learning process and it has been used as strategy for the organizational goal attainment. New graduated nurses' organizational socialization has been a very important process for learning knowledge, skills and behaviors in hospital setting. This study was to analyze and clarify the meaning of the concept of Organizational Socialization. Method : This study use the process of Walker & Avant's concept analysis. Results : The critical attributes of organizational socialization were identified as : 1) Internalization of Value and belief of organization; 2) Learning of organizational rules and modes of living; 3) Improvement of job performance; 4) Maintenance of supportive relationship; 5) Formation of occupational identity. The antecedents of organizational socialization consist of those facts that 1) negative feeling of role; 2) difficulties of interpersonal relationship; 3) unskilled work performance. And the consequences of organizational socialization consist of those facts that 1) organizational commitment; 2) job satisfaction; 3) intention of leave work setting; 4) improvement of job performance; 5) improvement of decision making; 6) maintenance of supportive relationship. Conclusion : Through this concept analysis, the concept of organizational socialization is defined as internalization of value and belief of organization, learning of organizational rules and modes of living, improvement of job performance, maintenance of supportive relationship and formation of occupational identity.

• Advances in concrete construction
• /
• 제8권1호
• /
• pp.21-31
• /
• 2019

The rich recipe of ultra high performance concrete (UHPC) offers the higher mechanical, durability and dense microstructure property. The variable like cement/sand ratio, amount of supplementary cementitious material, water/binder ratio, amount of fiber etc. alters the UHPC hardened properties to any extent. Therefore, to understand the effects of these variables on the performance of UHPC, inevitably a stage-wise development is required. In the present experimental study, the effect of sand/cement ratio, the addition of finer material (fly ash and quartz powder) and, hybrid fiber on the fresh, compressive and microstructural property of UHPC is evaluated. The experiment is conducted in three phases; the first phase evaluates the flow value and strength attainment of ingredients, the second phase evaluates the efficiency of finer materials (fly ash and quartz powder) to develop the UHPC and the third phase evaluate the effect of hybrid fiber on the flow value and strength of ultra high performance hybrid fiber reinforced concrete (UHP-HFRC). It has been seen that the addition of fly ash improves the flow value and compressive strength of UHPC as compared to quartz powder. Further, the usage of hybrid fiber in fly ash contained matrix decreases the flow value and improves the strength of the UHP-HFRC matrix. The dense interface between matrix and fiber and, a higher amount of calcium silicate hydrate (CSH) in fly ash contained UHP-HFRC is revealed by SEM and XRD respectively. The dense interface (bond between the fiber and the UHPC matrix) and the higher CSH formation are the reason for the improvement in the compressive strength of fly ash based UHP-HFRC. The differential thermal analysis (DTA/TGA) shows the similar type of mass loss pattern, however, the amount of mass loss differs in fly ash and quartz powder contained UHP-HFRC.

• 여성건강간호학회지
• /
• 제4권2호
• /
• pp.245-257
• /
• 1998

The characteristics of health behavior related pregnancy and childbirth have reflected on the cultural belief and value in the society. The efforts for women's health promotion through the current illumination of the traditional health care are the prompting assignment to be in nursing. The process of motherhood already progress before the motherhood actually. The functional state as the expectant mother can be the important predicting factor of the postpartum state, the quality of a married life. Motherhood was analyzed by Walker and Avant's method to clarify the concept 'to be a mother' using the various concepts like Koreans' Taekyo, transition to motherhood, maternal identity, maternal role attainment, maternal fetal attachment, and maternal fetal interaction. Upon the concept analysis, naturalness, responsibility, attachment, readiness, controllability were identified as the defining characteristics of motherhood. The antecedents of motherhood were consist of maternal affection, positive self esteem, pregnancy acceptance, fetus recognition and the consequences of motherhood were consist of positive maternal identity, maternal fetal attachment, confidence about the maternal role, the healthy mother and the healthy baby. The empirical referents of motherhood were consists of recognition of motherhood, expectation about motherhood, fetal recognition with ultrasonography and fetal movement, experience of unification between mother and fetus, expression of affection to the fetus, concern about fetal health, concern and practice about Taekyo, adaptation behavior about physical change and discomfort due to pregnancy. Therefore it is necessary to develop the instruction program of motherhood including the defining attributes identified in this study.

• 기술혁신학회지
• /
• 제5권1호
• /
• pp.90-109
• /
• 2002

The national nuclear R&D projects have been implemented for the purpose of supply of nuclear power which was proved to be safety and stability. Evaluating the national nuclear R&D projects has critical importance in nu-clear energy management aspect. This paper employs multi-attribute utility analysis as a basis for obtaining an evaluation index to assess the national nuclear R&D projects using a specific case study of Korea. To structure and quantify basic values for the evaluation, we elicited important attributes, then refined and structured them into a hierarchy. A multi-attribute index is constructed as a multi-attribute utility function, based on value judgments provided by a group of technical experts, policy makers, and faculties. As a result, the objective of attainment of a proposed object is given the highest priority, followed by appropriateness of project and research strategy, utilization of research output, within attribute ranges defined for the attributes. We found that the work and results of this study can provide valuable insights and decision opportunities for virtually all major decision making in evaluation of the national nuclear R&D projects in Korea.

• Advances in concrete construction
• /
• 제16권5호
• /
• pp.255-267
• /
• 2023

The production of ultra-early-strength concrete (UESC) traditionally involves complexity or necessitates high-temperature curing conditions. However, this study aimed to achieve ultra-early-strength performance solely through room-temperature curing. Experimental results demonstrate that under room-temperature (28℃) curing conditions, the concrete attained compressive strengths of 20 MPa at 4 hours and 69.6 MPa at 24 hours. Additionally, it exhibited a flexural strength of 7.5 MPa after 24 hours. In contrast, conventional concrete typically reaches around 20.6 MPa (3,000 psi) after approximately 28 days, highlighting the rapid strength development of the UESC. This swift attainment of compressive strength represents a significant advancement for engineering purposes. Small amounts of steel fibers (0.5% and 1% by volume, respectively) were added to address potential concrete cracking due to early hydration heat and enhance mechanical properties. This allowed observation of the effects of different volume contents on ultra-early-strength fiber-reinforced concrete (UESFRC). Furthermore, the compressive strength of 0.5% and 1% UESFRC increased by 16.3% and 31.3%, respectively, while the flexural strength increased by 37.1% and 47.9%. Moreover, toughness increased by 58.2 and 69.7 times, respectively. These findings offer an effective solution for future emergency applications in public works.