기성콘크리트 부재의 현장생산 리스크 평가를 위한 체크리스트 개발

임지영 ( Lim¸ Jeeyoung ),정희웅 ( Jeong¸ Hee Woong ),김대영 ( Kim¸ Dae Young ) 한국건축시공학회 2021 한국건축시공학회지 Vol.21 No.5

기성콘크리트 부재를 현장 생산하는 경우 공장생산보다 약 14.5-39.4%의 원가가 절감되는 것으로 이전 연구에서 확인되었다. 특히, PC공장 관계자의 인터뷰를 통해, 실제 공장주는 생산원가의 20% 이상의 이윤을 얻지 못하면 공장관리 간접비를 cover하지 못해 계약을 하지 않는 것으로 확인되었다. 그리고 동등한 조건에서 기성콘크리트 부재를 현장에서 생산한다면 공장생산 대비 동등 이상의 품질이 확보된다. 이 연구들에 따르면 원가와 품질 측면에 유리하므로 기성콘크리트 부재는 현장에서 생산하여야 한다. 그러나 주어진 공기뿐 아니라 현장생산을 위한 여러 가지 제약조건으로 모든 물량을 현장생산하기 어렵다. 그 이유는 현장생산은 프로젝트 관리 과정에서 발생할 수 있는 리스크로 인하여 기피하기 때문이다. 그러나 기성콘크리트 부재의 현장생산 수행 전 리스크 요인을 분석하고 그에 대응한다면 현장생산 기회를 높일 수 있다. 따라서 본 연구는 기성콘크리트 부재의 현장생산 리스크 평가를 위한 체크리스트를 개발한다. 체크리스트를 1개의 사례현장에 적용하여 리스크 요인을 쉽고 빠르게 평가할 수 있다는 것을 검증하였다. 그 결과 건폐율이 높은 현장의 경우 생산 및 야적을 위한 가용면적을 확보하기 어려워 리스크가 큰 현장으로 분류되는 것으로 분석되었다. 개발된 리스크 평가 체크리스트는 현장생산의 리스크요인을 효율적으로 평가하며, 프로젝트 수행 시 수시로 변경되는 리스크요인을 쉽고 빠르게 판단하여 상황에 따라 대처가 가능하다. In previous studies, it was confirmed that through the in-situ production of precast concrete members, costs could be reduced by 14.5-39.4% compared to in-plant production. In particular, it was confirmed that the factory owner did not make a contract if it did not earn more than 20% of the production cost. If precast concrete members are produced in-situ under the same conditions, the quality equivalent to that of factory production can be secured. As it is advantageous in terms of cost and quality, precast concrete members must be produced in-situ. However, it is difficult to produce all quantities in-situ due to time and various other constraints. This is because in-situ production is avoided due to anticipated risks during the project management process. However, if the risk factors are analyzed before performing in-situ production of precast concrete members, it will increase the opportunity for in-situ production. Therefore, this study develops a checklist for evaluating the risk of in-situ production of precast concrete members. By applying the checklist to one case site, it was verified that risk factors can be evaluated easily and quickly. As a result, it was analyzed that sites with a high building coverage ratio are classified as high-risk sites because it is difficult to secure usable area for production and storage. The developed checklist efficiently evaluates the risk factors of in-site production, and makes it possible for the operator to determine the risk factors, which can change frequently during project execution, and respond according to the situation.

팀 긍정정서가 팀 효과성과 팀원들의 일 열의에 미치는 영향 : 팀의 높은 질적 관계의 매개효과 검증

문지영(Jeeyoung, Moon),이지영(Jeeyoung, Lee) 한국인적자원관리학회 2021 인적자원관리연구 Vol.28 No.5

4차 산업혁명 시대인 현재 협력과 집단지성이 강조되면서 조직에서 관계성의 가치는 계속적으로 높아지고 있다. 이러한 실무적 필요성과 함께, 조직연구에서도 긍정조직연구의 발전과 더불어 조직에서의 높은 질적 관계가 많은 주목을 받고 있다. 본 연구에서는 이러한 실무적, 연구적 필요성을 바탕으로 팀의 높은 질적 관계의 영향력을 살펴보는데 주요한 목적이 있다. 이를 위해 구체적으로 본 연구는 세 가지 목적을 수행한다. 첫째, 팀의 높은 질적 관계에 영향을 미치는 선행요인으로 팀 긍정정서를 설정하여, 팀 긍정정서가 팀의 높은 질적 관계에 미치는 영향을 살펴본다. 둘째, 높은 질적 관계가 팀 효과성과 팀원들의 일 열의에 미치는 영향을 다수준 분석을 통해 확인하고, 셋째, 팀의 높은 질적 관계의 매개효과를 확인한다. 국내 대기업 계열 IT 기업을 대상으로 40개 팀의 팀원들을 대상으로 설문조사를 실시한 결과, 팀 긍정정서가 팀 HQCs에 유의한 정적 영향을 미치는 것으로 확인되었으며, 또한 팀 긍정정서는 팀 효과성과 팀원들의 일 열의 모두에서도 정적인 영향을 미쳐 팀 긍정정서의 중요성을 확인시켜 주었다. 반면, 팀 HQCs의 경우는 팀원들의 일 열의에는 유의한 영향을 미쳤으나, 팀 효과성에는 영향을 미치지 않아 팀이 높은 질적 관계를 갖는 것은 팀 효과성보다는 개개인들의 일에 대한 동기부여에 관여하고 있음을 확인해주었다. 마지막으로 팀 HQCs의 매개효과를 살펴본 결과에서는 팀 HQCs는 팀 긍정정서와 팀원들의 일 열의에서만 부분매개 효과를 나타내 팀에서 개인의 일 열의에 영향을 미치는데 팀에서의 높은 질적 관계가 중요한 역할을 함을 확인하였다. 본 연구는 HQCs를 중심으로 팀 긍정정서, 팀 HQCs, 그리고 결과변인들을 살펴봄으로써 HQCs에 대한 전반적인 과정을 살펴보았다는데 의미가 있으며, 특히 이전에 많이 연구되지 않았던 HQCs의 선행변인을 확인하였다는데 이론적 시사점을 지닌다. 이 결과는 팀의 높은 질적 관계에 팀 긍정정서의 중요성을 발견해주었으며, 이를 통해 실무적으로 팀의 긍정적 분위기가 왜 필요한지를 확인해주었다. 또한 본 연구에서는 팀 HQCs가 팀원들의 일 열의에 유의한 영향을 미치며 동시에 부분 매개함을 보여줌으로써 적극적인 상호작용을 통해 팀이 높은 질적 관계를 형성하는 것이 개인들이 자신의 의무 이상으로 일에 열의를 보일 수 있음을 확인시켜주었다. 이러한 결과들을 바탕으로 도출된 시사점 및 연구결과의 한계 및 향후 연구방향은 결론부분에서 심도 깊게 논의되었다. In response to increasing demand for cooperation intelligence in the Fourth Industrial Revolution era, the value of relationships in organizations continues to emphasized. Along with these practical needs, high quality connections (HQCs) have a lot of attention in organizations along with the development of positive organizational research. The purpose of this study is to identify the influence of team HQCs. Using a multi-level analysis that utilizes a hierarchical linear model(HLM), we examine the team HQCs antecedents and their influence at the team and individual levels. In order to investigate this model, we have collected data from employees and team leaders of 40 work teams in the Conglomerate IT company. In results, team positive emotions had a significant positive effect on team HQCs, and team positive emotions also had a positive effect on both team effectiveness and team member work engagement. On the other hand, in the case of team HQCs, it had a significant influence on the team members work engagement, but it did not affect team effectiveness. It showed that teams which have a high qualitative relationship affect individual motivation for work more than team effectiveness. Finally, as a result of examining the mediating effects of Team HQCs, it confirmed that team HQCs showed partial mediating effects only in the relationship between team positive affect and employees’ work engagement. It appeared that high qualitative relationships in the team play an important role in influencing individual enthusiasm in the team. From a practical point of view, it is necessary to establish a qualitative relationships to active interaction in eliciting team members’ enthusiasm. And if team has positive affect, employees think work as an enjoyable play, so it is suggested that organizations should develop and cultivate positive affect. In the conclusion segment of this study, the implications and limitations of the findings were reviewed in-depth, and future research subjects in this field were also discussed.

Overview of the Study of Modern Chinese Syntax in Korea

Jeeyoung Peck 한국중어중문학회 2014 中語中文學 Vol.58 No.-

This brief state of the art and history of the study of Modern Chinese syntax in Korea introduces the research trends and traditions of Korean researchers who have worked on modern Chinese syntax between 1950 and today. This article reviews the dissertations, books and journal articles related to modern Chinese syntax published in Korea. In the beginning stage (1950-1979), Korean researchers planted the seeds of modern Chinese syntax in the field of Sinology in the residual tradition of ‘minor learning.’ In the growing stage (1980-1999), the field of modern Chinese syntax expanded its volume and scope. Researchers began to work on natural data at this time and apply modern linguistic theories. In the setting stage (2000-the present), modern Chinese syntax became the major subfield within Chinese linguistics in Korea. Pedagogical syntax and contrastive syntax have also been established as substantial subareas of modern Chinese syntax in Korea. For general syntax as a subarea of modern Chinese syntax, more diverse approaches and methodologies have been increasingly pursued.

Analogy and Reanalysis in the Postposing of Durative and Iterative Adverbials in the History of Chinese

Jeeyoung Peck 한국중어중문학회 2011 中語中文學 Vol.49 No.-

This study attempts to examine both speakers’ motivations for and grammatical mechanisms involved in the postposing of temporal adverbials denoting duration (e.g. santian ‘for three days’) and iteration (e.g. sanci ‘three times’) over the course of the history of the Chinese language. It will point out that durative and iterative adverbials delimit event type, similar to quantized NPs in direct object position (e.g. san ping jiu ‘three bottles of wine’) which have consistently been postverbal. It analyzes how the event delimiting function shared by these temporal adverbials and quantized NPs motivated speakers to align all these structures in the postverbal position. It also discusses that as a mechanism of word order change, situation-delimiting adverbials such as sanci/santian were reanalyzed as pseudo-objects (e.g. jie zhebenshu jie le sanci/santian ‘borrowed this book three times/for three days’) in Early Mandarin, and distinguished syntactically from other purely temporal adverbials denoting frequency (e.g. changchang, ‘often’) or temporal frame (e.g. zai santian zhinei, ‘in three days’).

Trend of Domestic Fig Industry and its Implications

Jeeyoung Lim,Jihye You,Junhong Park,Junghoon Moon 한국농식품정보과학회 2018 Agribusiness and Information Management Vol.10 No.1

Fig is a fruit of which the flesh is very sweet, and it is a tree which has been grown for fruit in Korea since long time ago. However, since the flesh of fig tends to be easily softened, commercial cultivation of this fruit began later than that of other fruit trees grown for profit, however, the cultivation and demand of fig tend to be increased steadily due to the development of technology for storage and distribution since the 2000s. In addition, as the domestic dining culture is getting diversified, the dishes cooked by using fig as a food material are introduced through diverse foods including dessert, and it is possible to intake fig in diverse ways, but not through the traditional processed food. Therefore, it is necessary to establish a measure of expanding the consumption of fig as a processed food, and it will be possible to overcome the limitation of short storage period, while securing the competitiveness of the fig industry. In this research, we have studied the history of domestic fig cultivation, current status of it and status of processed foods through related documents and materials, and the characteristics of the consumers who purchase figs. Fig is a traditional fruit, however, we could find out the fact that the consumers tend not to recognize it as a traditional one. Therefore, if we could add fig to various processed foods utilizing its sweet taste, rather than increasing the consumption of fresh fruits, it may increase the consumption of it.

Clinical spectrum and diagnosis of diabetic neuropathies

Jeeyoung Oh 대한내과학회 2020 The Korean Journal of Internal Medicine Vol.35 No.5

Neuropathy is the most prevalent microvascular complication of diabetes mellitus; it encompasses distal symmetric polyneuropathy, autonomic neuropathy, radiculoplexus neuropathy, mononeuropathy, and treatment-induced neuropathy. The prevalence rate of diabetic neuropathy in Korea was reported to be approximately 43%, which is similar to rates in other countries. However, the precise pathogenic mechanism underlying diabetic neuropathy is still obscure, and many clinical trials have failed to develop methods to prevent or reduce the progression of diabetic neuropathy. Nevertheless, early diagnosis and proper management of diabetic neuropathy are essential to alleviate disabling symptoms and to improve the quality of life of patients. This review discusses clinical manifestations and classification of diabetic neuropathies, bedside neurological examination, and electrophysiological tests.

Development of Random Forest Algorithm Based Prediction Model of Alzheimer’s Disease Using Neurodegeneration Pattern

JeeYoung Kim,Minho Lee,Min Kyoung Lee,Sheng-Min Wang,Nak-Young Kim,Dong Woo Kang,Yoo Hyun Um,Hae-Ran Na,Young Sup Woo,Chang Uk Lee,Won-Myong Bahk,Donghyeon Kim,Hyun Kook Lim 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.1

Objective Alzheimer’s disease (AD) is the most common type of dementia and the prevalence rapidly increased as the elderly population increased worldwide. In the contemporary model of AD, it is regarded as a disease continuum involving preclinical stage to severe dementia. For accurate diagnosis and disease monitoring, objective index reflecting structural change of brain is needed to correctly assess a patient’s severity of neurodegeneration independent from the patient’s clinical symptoms. The main aim of this paper is to develop a random forest (RF) algorithm-based prediction model of AD using structural magnetic resonance imaging (MRI). Methods We evaluated diagnostic accuracy and performance of our RF based prediction model using newly developed brain segmentation method compared with the Freesurfer’s which is a commonly used segmentation software. Results Our RF model showed high diagnostic accuracy for differentiating healthy controls from AD and mild cognitive impairment (MCI) using structural MRI, patient characteristics, and cognitive function (HC vs. AD 93.5%, AUC 0.99; HC vs. MCI 80.8%, AUC 0.88). Moreover, segmentation processing time of our algorithm (<5 minutes) was much shorter than of Freesurfer’s (6-8 hours). Conclusion Our RF model might be an effective automatic brain segmentation tool which can be easily applied in real clinical practice.

R&D Strategy to Strengthen Market Competitiveness of Silicon Solar Cell

Jeeyoung Choi(최지영),Youah Lee(이유아),Jiseok Ahn(안지석),Ran Yoo(유란),Sungjun Hong(홍성준) 한국신재생에너지학회 2019 한국신재생에너지학회 학술대회논문집 Vol.2019 No.11

Homo Civicus vs. Homo Politicus

Jeeyoung Park(박지영) 명지대학교 미래정치연구소 2017 미래정치연구 Vol.7 No.1

누가 정치에 참여하는가? 본 논문은 투표 참여에 관한 기존 연구들과 최신 연구 동향을 미시적 그리고 거시적 수준에서 분석하였다. 미시적 요인으로는 개인의 사회경제적 지위, 투표참여로 인한 비용, 시민 의무감 등이 있고, 반면에 거시적 요인으로는 사회적 압박, 사회적 선호, 이웃효과 등과 같은 맥락적 특성이 투표 참여율 증감에 중요한 역할을 한다고 보았다. 이와 더불어 인간의 유전자가 개인의 투표 참여에 상당한 영향을 미친다는 최근의 흥미로운 논의도 소개하였다. 이 논문은 시민들의 투표 참여에 관한 문헌 연구 소개에 그치는 것이 아니라, 서로 다른 분석수준의 통합을 통해 기존 투표 참여 분석에서 나타났던 문제점을 보완할 수 있다고 제안한다. Who participates in politics? To answer this question, I discuss what makes citizens get more involved in voting because voting is the most prominent form of political participation as well as one of the fundamental acts of democratic politics. In this paper, I examine the various determinants of voter turnout based on the existing literature at both the aggregate and individual levels. The existing literature suggests that both a citizen’s characteristics and the political context will shape voter participation. While a citizen’s socioeconomic status, costs of casting a ballot, or civic duty affect her voting participation, there are pivotal contextual features such as social pressure, social preference, or neighboring effect which enable or impede voter participation. Interestingly, a new perspective argues that human genes are also an important factor in affecting voting participation. In this paper, I argue that we may expand the scope of research on political participation by combining insights from both the individual and aggregate levels.

Validation of Social Responsiveness Scale for Korean Preschool Children With Autism

Jeeyoung Chun,Guiyoung Bong,Jae Hyun Han,Miae Oh,Hee Jeong Yoo 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.9

Objective This cross-cultural study aims to examine the psychometric properties of the Social Responsiveness Scale (SRS) and to determine the best-estimate-cut-off scores for the diagnosis of autism spectrum disorder (ASD) in Korean preschool children.Methods A total of 563 children was recruited from multiple sources, including Seoul National University Bundang Hospital. Participants were assessed by a multidisciplinary research team using multiple diagnostic tools based on DSM-5 diagnostic criteria. Discriminative validity was tested by comparing the difference in SRS scores between ASD and non-ASD groups. Convergent validity was tested by examining correlations between SRS scores with other diagnostic instruments. A receiver operation characteristic curve analysis was conducted to test the sensitivity and specificity of SRS and to determine the best-estimate-cut-off scores for screening ASD in Korean preschool children.Results There were significant differences in the total SRS scores between the ASD (n=242) and non-ASD group (n=321) (p<0.01, 95% confidence interval [CI]: 14.08–17.24). The differences were significant even after adjusting for age. SRS scores were significantly correlated with other prescreening diagnostic tools for ASD. The best-estimate cut-off score to screen ASD was 55 (area under curve=0.88, sensitivity 78.1%, specificity 86.6%).Conclusion The SRS is a valid and reliable instrument to screen and aid in the diagnosis of ASD in Korean preschool children. The adjusted cut-off scores, notably lower than in the original U.S. version, may yield a more accurate diagnosis by reflecting transcultural differences.