사례기반 건설안전 관리시스템의 추론 모형

이재용,이현수,예태곤 한국산업안전학회 1999 한국안전학회지 Vol.14 No.1

Construction accidents occur reiteratively in similar fashions. There have been several attempts to develop a safety program for preventing construction accidents on sites. It will be very effective to use previous accident cases for establishing proper safety plan and managing safety process. This research develops a case-based construction safety management system which enables construction managers or safety managers to prevent potential accidents during the construction process. The case-oriented approach is performed through the representation of previous accident cases in accordant with the similarity to the conditions of current site. It uses a case-based reasoning which is one of the reasoning methods of an expert system. A prototype system for the reasoning model was implemented using one of the case based system development tools. The system was applied to a real construction site to verify its capability and validity. It was founded that the causes of accidents were successfully removed, so the proposed model proved to be reasonable. Additional research is need to resolve the technical problem how to adapt the countermeasures for accident prevention provided by the reasoning model.

동시대 도예의 장소 특정성 연구

김예성(Kim, Ye-Sung),김지혜(Kim, Ye-Sung) 한국조형디자인학회 2021 조형디자인연구 Vol.24 No.2

역사의 시작부터 현재에 이르기까지 인류사에 등장하는 모든 유형의 도자는 주어진 환경과 장소에 따라 형태와 쓰임이 다른 ‘장소 특정적’ 성격을 지닌다. 본 연구의 목적은 이러한 도예의 장소 특정성에 관해 연구함으로써 도예의 영역을 넘어 동시대 미술과 문화로 그 담론을 확장해나가는 동시대 도예의 경향을 이해하는 것이다. 이를 위하여 장소와 공간에 관한 이론과 장소 특정적 현대도예 작품들을 연구하였다. II 장은 배경 연구로서, 모더니즘의 공간으로부터 동시대 미술에서의 ‘장소성’의 회복까지의 일련의 변화과정을 이 푸 투안(Yi Fu Tuan)의 이론을 대입시켜 설명하고, 권미원의 장소 특정적 미술(Site-Specific Art)의 계보를 기술하였다. Ⅲ 장에서는 포스트모더니즘의 영향 아래 전개된 현대도예에 대한 정리와 함께, 김예성, 이연숙, 야스민 스미스(Yasmin Smith) 등 도예의 언어로 장소 특정적 작업을 활발히 진행하는 국내외 작가들의 최근 작업사례를 분석하였다. 본 연구는 일상과 현실의 장소에서 행해진 장소 특정적 현대도예 작업의 탐구과정을 통해 그 안의 서사들이 도예계를 넘어 우리 사회와 미술 안에서 확장된 담론으로서 기능함을 발견하며 동시대 도예의 새로운 가능성을 가늠하게 한다. From the beginning of history to the present, all types of ceramics appearing in human history have a site-specific character that differs in form and use depending on the given environment and place. The purpose of this study is to understand the tendency of contemporary ceramics to expand its discourse beyond the realm of ceramics to contemporary art and culture by studying the specificity of the location of these ceramics. To this end, theories about place and space and site-specific contemporary ceramic works were studied. Chapter II is a background study, explaining the changes from the space of modernism to the restoration of the place in contemporary art by substituting the theory of Yi Fu Tuan, and Miwon Kwon s The genealogy of Site-Specific Art was described. In Chapter Ⅲ, along with a summary of the contemporary ceramic art developed under the influence of postmodernism, the recent cases in the language of ceramic or clay works such as Kim, Ye-sung, Lee, Yeon-sook, and Yasmin Smith are analyzed. In this study discovers that the narratives within the ceramic art world function as an expanded discourse within our society and art through the exploration process of site-specific contemporary ceramic works performed in everyday and real places. It allows us to gauge the new possibilities of contemporary ceramics.

Determination and classification of intraoral phosphor storage plate artifacts and errors

Yeşim Deniz,Seher Kaya 대한영상치의학회 2019 Imaging Science in Dentistry Vol.49 No.3

Purpose: The aim of this study was to determine the reasons and solutions for intraoral phosphor storage plate (PSP) image artifacts and errors, and to develop an appropriate classification of the artifacts. Materials and Methods: This study involved the retrospective examination of 5,000 intraoral images that had been obtained using a phosphor plate system. Image artifacts were examined on the radiographs and classified according to possible causative factors. Results: Artifacts were observed in 1,822 of the 5,000 images. After examination of the images, the errors were divided into 6 groups based on their causes, as follows: images with operator errors, superposition of undesirable structures, ambient light errors, plate artifacts (physical deformations and contamination), scanner artifacts, and software artifacts. The groups were then re-examined and divided into 45 subheadings. Conclusion: Identification of image artifacts can help to improve the quality of the radiographic image and control the radiation dose. Knowledge of the basic physics and technology of PSP systems could aid to reduce the need for repeated radiography.

An evaluation of the gingival biotype and the width of keratinized gingiva in the mandibular anterior region of individuals with different dental malocclusion groups and levels of crowding

Ye?im Kaya,Ozer Alkan,Sıddık Keskin 대한치과교정학회 2017 대한치과교정학회지 Vol.47 No.3

Objective: To evaluate the relationship of gingival thickness (GT) and the width of keratinized gingiva (WKG) with different malocclusion groups and the level of crowding. Methods: A total of 187 periodontally healthy subjects (121 females and 66 males) who presented at the Faculty of Dentistry in Yüzüncü Yıl University for orthodontic treatment were enrolled in the study. The individuals involved in the study were divided into three groups; Angle Class I malocclusion, Angle Class II malocclusion, and Angle Class III malocclusion. Each group was classified as mild, moderate, or severe according to the level of crowding. WKG was determined as the distance between the mucogingival junction and the free gingival margin. GT was determined by the transgingival probing technique. Factorial variance analysis and the Duncan multiple comparison test were employed to identify the extent to which a difference was apparent between the groups according to these parameters. Results: It was determined that teeth in the mandibular anterior region display the thin gingival biotype. WKG and GT were observed as being higher at the mandibular incisor teeth in the severe crowding group and at the mandibular canine teeth in the mild crowding group. The GT of the mandibular right central and lateral incisors was found to be thinner in the Angle Class III group. Conclusions: Within the limits of this study, the results demonstrate that, there is no significant relationship of WKG and the mean GT in the mandibular anterior region according to the Angle classification.

Early Warning, not too Late Lessons

Ye_Yong CHOI 한국환경보건학회 2006 한국환경보건학회 학술대회 자료집 Vol.2006 No.-

In Situ Growth of FeCo-selenide on Ni Foam as High-Performance Electrode for Electrochemical Energy Storage Devices

An Ye,Jiqiu Qi,Yanwei Sui,Fei Yang,Fuxiang Wei,Yezeng He,Qingkun Meng,Zhi Sun 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.7

A solid-state energy storage device has been fabricated using FeCo-selenide nanosheet arrays as positive electrode and Fe2O3 nanorod as negative electrode. As an electrode material, the ternary FeCo-selenide nanosheet arrays supported by Ni foam show a highest specific capacitance of 978 F/g (specific capacity of 163 mAh/g) at 1 A/g and a superior cycle behavior of 81.2% are obtained after 5000 cycles at current density of 4 A/g. The asymmetric supercapacitor achieves the maximum energy density of 34.6Wh/kg at the power density of 759.6 W/kg. Furthermore, the superior cycling stability with 83% retention of initial capacitance after 5000 cycles further verify the practical applications of FeCo-selenide//Fe2O3 asymmetric supercapacitor. Meanwhile, the LED bulb and the light board of "CUMT" are lighted by connecting several capacitors to form a series circuit.

Hybrid SNR‐Adaptive Multiuser Detectors for SDMA‐OFDM Systems

Uğur Yeşilyurt,Özgür Ertuğ 한국전자통신연구원 2018 ETRI Journal Vol.40 No.2

Multiuser detection (MUD) and channel estimation techniques in space‐division multiple‐access aided orthogonal frequency‐division multiplexing systems recently has received intensive interest in receiver design technologies. The maximum likelihood (ML) MUD that provides optimal performance has the cost of a dramatically increased computational complexity. The minimum mean‐squared error (MMSE) MUD exhibits poor performance, although it achieves lower computational complexity. With almost the same complexity, an MMSE with successive interference cancellation (SIC) scheme achieves a better bit error rate performance than a linear MMSE multiuser detector. In this paper, hybrid ML‐MMSE with SIC adaptive multiuser detection based on the joint channel estimation method is suggested for signal detection. The simulation results show that the proposed method achieves good performance close to the optimal ML performance at low SNR values and a low computational complexity at high SNR values.

Red Cell Distribution Width: A Novel Marker of Activity in Infl ammatory Bowel Disease

Atakan Yeşil,Ebubekir Şenateş,İbrahim Vedat Bayoğlu,Emrullah Düzgün Erdem,Refi k Demirtunç,Ayşe Oya Kurdaş Övünç 거트앤리버 소화기연관학회협의회 2011 Gut and Liver Vol.5 No.4

Background/Aims: Studies concerning red cell distribution width (RDW) for use in the assessment of infl ammatory bowel disease (IBD) activity are limited. We investigated whether RDW is a marker of active disease in patients with IBD. Methods: In total, 61 patients with ulcerative colitis (UC)and 56 patients with Crohn’s disease (CD) were enrolled in the study group, and 44 age- and-sex-matched healthy volunteers were included as the control group. A CD activity index >150 in patients with CD indicated active disease. Patients with moderate and severe disease based on the Truelove-Witts criteria were considered to have active UC. In addition to RDW, serum C-reactive protein levels, erythrocyte sedimentation rates, and platelet counts were measured. Results: Twenty-nine (51.7%) patients with CD and 35 (57.4%)patients with UC had active disease. The RDW was significantly higher in patients with CD and UC than in controls (p<0.001 and p<0.001, respectively). A subgroup analysis indicated that for a RDW cut-off of 14%, the sensitivity for detecting active CD was 79%, and the specicity was 93% (area under curve [AUC], 0.935; p<0.001). RDW was the most sensitive and specifi c marker for active CD. However, it was not valid for UC, as the ESR at a cutoff of 15.5 mm/hr showed a sensitivity of 83% and a specicity of 76% (AUC, 0.817;p<0.001), whereas the RDW at a cutoff of 14% showed 17%sensitivity and 84% specicity for detecting active UC. Conclusions:RDW was elevated in IBD in comparison with healthy controls and increased markedly in active disease. RDW may be a sensitive and specifi c marker for determining active CD,whereas ESR is an important marker of active UC.

An Investgation About the Relationship Between Vasopressin and Oxytocin in Persistent Type Functional Neurological Symptom Disorder

Bahar Yeş,il Ö,rnek,Birgü,l Elbozan Cumurcu,Esra Porgali Zayman 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.10

Objective Functional neurogical symptom disorder (FNSD) is a somatic symptom disorder with loss of voluntary motor or sensory functions, which cannot be explained by another medical condition. The study aimed to examine the relationship of vasopressin and oxytocin in persistent type FNSD. Methods This study included 27 female patients between the ages of 20-57 who were diagnosed with FNSD according to DSM-5 and 27 healthy controls matched in terms of age and gender. Serum vasopressin and oxytocin levels were measured twice on the same day in fasting blood samples and the results were compared statistically. Results Vasopressin were lower in patients compared to controls while there was no difference between oxytocin levels. Childhood traumas were more common in patient group, and mean oxytocin level was lower in patients who exposed to childhood trauma, compared to controls. No significant difference was found between the groups in terms of vasopressin. Conclusion Changes in vasopressin and oxytocin balance in the pathogenesis of persistant FNSD, may likely to lead to physiological and behavioral consequences. Lower oxytocin levels may also be a marker of exposure to childhood trauma in FNSD. These neuropeptides plays important role in neuroendocrine balance of emotional behavior.

프랑스어 인칭 대명사의 사회·문화적 함의 연구

김예숙(Kim Ye-Sug) 한국사회언어학회 2004 사회언어학 Vol.12 No.2

Kim, Ye-Sug. 2004. A Study of the Social, Cultural Connotations of French Personal Pronouns. The Sociolinguistic Journal of Korea, 12(2). This study explores the social, cultural connotations of French personal pronouns. The second person pronoun divides into TU and VOUS. In the past, TU was used when the speaker of high standing calls a person of low birth. VOUS was used by the latter calling the former. Between persons of high rank, VOUS was used reciprocally and between persons of lower classes TU was in the reciprocal usage. At the time of the French Revolution, TU was considered as the real pronoun for the citizens whereas VOUS was rejected as flattering, causing inequality. But a few years later, VOUS began to be used again. The change was made by the way that the use of TU presents familiarity between speaker and hearer, and no more equality. So nowadays, the choice of TU/VOUS depends principally on the horizontal relationship, not on the vertical relationship. Other terms of address like 'Monsieur', 'Madame', 'Mademoiselle', the first name and the last name come join TU/VOUS and make the most appropriate mode to call or indicate persons.