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Artificial neural network model for predicting sex using dental and orthodontic measurements

  • Sandra Anic-Milosevic;Natasa Medancic;Martina Calusic-Sarac;Jelena Dumancic;Hrvoje Brkic
    • 대한치과교정학회지
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    • 제53권3호
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    • pp.194-204
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    • 2023
  • Objective: To investigate sex-specific correlations between the dimensions of permanent canines and the anterior Bolton ratio and to construct a statistical model capable of identifying the sex of an unknown subject. Methods: Odontometric data were collected from 121 plaster study models derived from Caucasian orthodontic patients aged 12-17 years at the pretreatment stage by measuring the dimensions of the permanent canines and Bolton's anterior ratio. Sixteen variables were collected for each subject: 12 dimensions of the permanent canines, sex, age, anterior Bolton ratio, and Angle's classification. Data were analyzed using inferential statistics, principal component analysis, and artificial neural network modeling. Results: Sex-specific differences were identified in all odontometric variables, and an artificial neural network model was prepared that used odontometric variables for predicting the sex of the participants with an accuracy of > 80%. This model can be applied for forensic purposes, and its accuracy can be further improved by adding data collected from new subjects or adding new variables for existing subjects. The improvement in the accuracy of the model was demonstrated by an increase in the percentage of accurate predictions from 72.0-78.1% to 77.8-85.7% after the anterior Bolton ratio and age were added. Conclusions: The described artificial neural network model combines forensic dentistry and orthodontics to improve subject recognition by expanding the initial space of odontometric variables and adding orthodontic parameters.

한국편목규칙의 표목부에 관한 연구 (A Study on Rules for Headings in the Korean Cataloging Rules)

  • 정옥경
    • 한국문헌정보학회지
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    • 제34권2호
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    • pp.135-157
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    • 2000
  • 본 연구는 새로운 한국편목규칙의 표목부에 대한 일련의 합리적인 규칙을 고안하는데 목적이 있다. 본연구의 목적을 달성하기 위하여 ICCP의 제원칙에 관한 성명, AACR, AACR2, AACR2R, KCR2,KCR3.1, 한국문헌목록정보, GARE 등을 분석하였다. 그 분석 결과 문제점을 검토하여 표목부에 대한 새롭고 합리적인 편목규칙의 방안을 제시하였으며, 동명이인 구별시 전공 주제명을 표시하기 위한 합리적인 주제명일람표를 고안하였다. 그리고 표목통제를 위한 전거통제 혹은 전거저록의 작성은 GARE에 준하여야 할 것이며, 표목부에 대한 규칙에 통합되어야 할 것이다.

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예산 제약하 관제구역 최대화를 위한 추가적인 해상교통관제서비스(VTS)의 입지 선정 문제 (Additional Vessel Traffic Services (VTSs) Location Problem for Maximizing Control Area Subject to Budget Limitation)

  • 한준수;김현우;정승은;이진호
    • 대한산업공학회지
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    • 제41권3호
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    • pp.296-304
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    • 2015
  • Vessel Traffic Service (VTS) is the service that provides ships navigating on a sea transportation route with guidance and advice about geographical environment and other attentive information for their safety. In this study we point out that currently, constructing additional VTSs is required to prevent ships from unexpected accident on their navigation. We first select several candidate locations for constructing VTSs, based on the amount of marine transportation and its potential development possibility. Then, we present an optimization model in which the maximum area coverage is achieved by determining new locations of VTS subject to budget limitation. The problem can be modeled as a binary integer program and it provides an optimal solution for new VTS locations to be constructed under the consideration of the currently located VTSs in Korea.

CFD Approach on Gas Explosion for SIL in Gas Fuelled Ship

  • Kim, Ki-Pyoung;Kim, You-Taek;Kang, Ho-Keun
    • Journal of Advanced Marine Engineering and Technology
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    • 제39권2호
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    • pp.195-200
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    • 2015
  • It is envisaged that the effect of increasingly stricter air emissions legislation implemented through IMO Annex VI and other local air quality controls, together with favorable financial conditions for the use of natural gas instead of liquid fuel oil as a bunker fuel, will see an increasing number of DF engine and single gas fuel engine applications to LNG carriers and other vessel types. As part of provision for the current international movements in the shipping industry to reduce GHG emission in air, new design concepts using natural gas as an alternative fuel source for propulsion of large commercial vessels, have been developed by shipyards and research institutes. In this study, an explosion analysis for a gas supply machinery room of LNG-fuelled container ship is presented. The gas fuel concept is employed for the high pressure ME-GI where a leakage in the natural gas double supply pipe to the engines is the subject of the present analysis. The consequences of a leak are simulated with computational fluid dynamics (CFD) tools to predict typical leak scenarios, gas cloud sizes and possible explosion pressures. In addition, capacity of the structure which is subject to explosion loads has been assessed.

노인의 아파트 디자인에 대한 거주 후 평가 - 김해시 장유신도시 지역을 중심으로- (Post-Occupancy Evaluation of Apartment Houses Design by the Elderly Residents - Focused on Jangyu New Urban Area in Gimhae -)

  • 오찬옥
    • 한국실내디자인학회논문집
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    • 제19권5호
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    • pp.122-129
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    • 2010
  • The basic premise of this study was that the elderly family would be one user type to live in apartment houses. This means that apartment houses should be designed by considering the elderly family as well as general young families. The purpose of this study was to carry out POE of apartment houses by the elderly resident and to suggest the design direction of apartment houses from the elderly's point of view. The subject was 150 elderly residents who lived in apartment houses in Jangyu new urban area, Kyungnam. The individual interview was done for this POE by six interviewers. They asked about how degree they were satisfied with 30 design elements of apartment houses. Those consisted of 8 elements related to outdoor environments, 16 ones to indoor environments, and 6 design evaluative elements for the elderly housing. The conclusions were as followings; 1) In general, the elderly subject was very satisfied with their apartment design. However, more considerations of the design evaluative elements for the elderly were needed in order to be apartment houses for the old generation. 2) Natural facilities such as small parks and walks, and local amenities should be arranged systematically to be used easily by the old residents. 3) The design solutions for reducing noise should be added. 4) The same quality of housing environment should be provided in all sizes of housing units.

한국문헌정보학의 지식체계에 관한 연구- 문헌정보학관련 학회논문집 게재논문을 중심으로 -

  • 이수상
    • 한국도서관정보학회지
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    • 제20권
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    • pp.413-453
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    • 1993
  • This study aims at reviewing and analyzing the characteristics of library and information science in Korea by examming the research papers in two representative journals. In Korea, related scholarly associations have began about twenty years ago and produced a lot of research papers. For this work, I have established two aspects of knowledge system - cognitive object and subject. In this regards, the cognitive object menas the contents of research papers and the cognitive subject means the research methodology. In my opinion, this study obtains some characteristics of library and information science in Korea as follows: 1. There have been many research fields, but most of them have finished with just one or two results and not researched. 2. The adaption of information science to library science was hasty and had not the good effects in scholastic development. 3. Most research papers have been influenced by methodological prejudices. 4. In settling the native principles for the Korean phenomenon, there have been many problems. To solve these problems, I suggest that the existing research attitudes be converted to new one. I call this new research attitude 'everyday life centered research method'. Using this method, we can find the true basics and principles of library and information science in Korea.

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우리나라 정보학 교육의 회고와 FIABID에 기초한 정보학 교육의 전망 (Reflection of the Early Curricular Transformation in Library Science and Future Prespect Based on FLABID)

  • 현규섭
    • 정보관리학회지
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    • 제7권1호
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    • pp.3-23
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    • 1990
  • 1960년대중반부터 한국의 도서관학 교육은 정보 검색론, 색인 및 초록 작성법을 도 입함으로서 정보학을 수용하기 시작하였다. 1970년대에 도서관학의 명칭 개정 논의는 본격 적인 정보학의 융합을 시도하려는 표현이었으며 1975년경에는 정보학 개론, 도서관 자동화 론, 정보 검색론이 모든 대학의 도서관학과에서 공통적으로 설강 되는 학과목이 되었다. 이 와 함께 1980년도에 들어서면서 도서관학의 학문 명칭을 문헌정보학으로 변경하는 경향이 나타나며 한국정보관리학회도 창설되는등 변화 양상이 나타난다. 이러한 모든 변화를 논리 적으로 존립시켜 주었던 주요 저작과 논문이 제현상과 결부되어 분석되었다. 1990년대를 위 한 정보학의 방향을 FIABID curriculum과(독일의 사례) 정보 시스템학과(미국 케리포니어 주립대학의 사례)를 들어 제시하였다.

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Compact battery-less guest guidance system at the EXPO 2005, Aichi Japan

  • Itoh, Hideo;Lin, Xin;Kaji, Ryosaku;Niwa, Tatsuya;Nakamura, Yoshiyuki;Nishimura, Takuichi
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2005년도 ICCAS
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    • pp.2207-2210
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    • 2005
  • Guest guidance system based on the compact battery-less information terminal, Aimulet, which has been developed by the authors of the National Institute of Advanced Industrial Science and Technology (AIST), Japan. Conventional Aimulet, which is Aimulet ver.1 or CoBIT, has features of location and direction sensitive information service device without batteries. On the other hand, the Aimulet has two subjects, one is multiplex and demultiplex of some contents, and the other is operation under sunshine. Former subject is of solved by the wavelength multiplex technique using LED emitter with different wavelength and dielectric optical filters. Latter subject is solved by new micro spherical solar cells with a visible-light-eliminating optical filter and a new design of light irradiation. These techniques are applied to the EXPO 2005, Aichi Japan and introduced in public. Aimulet GH is Former technique is applied on Aimulet GH, which is used in Orange Hall of the Global House, scientific museum with a fossil of a frozen mammoth.

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1982 협회동맹파업약관(적하)와 2009 협회동맹파업약관(적하)의 비교 연구 (A Comparative Study on the Articles between 1982 ISC(Cargo) and 2009 ISC(Cargo))

  • 권오
    • 통상정보연구
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    • 제12권3호
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    • pp.335-359
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    • 2010
  • The purpose of this study is to interpret the articles revision of the 2009 ISC(Cargo) compared to the 1982. The result of this study is summarized as followings: 1) the 'clause' attached to article in 1982 ISC(Cargo) was deleted in the revision of 2009 ISC(Cargo). 2) 2009 ISC(Cargo) is characterized as the marine insurance firms' acceptance of new environment change, limitation in causation and subject-matter insured, expansion of insurance period, and limited revision. 3) The assured has a large range of choice in 2009 ISC(Cargo) even though both 1982 ISqCargo) and 2009 ISC(Cargo) would be existed further. 4) There are few studies which have a focus on the impact of the relationship between responsibility of the insurer and opportunity of the assured on rate of premium. In the future, the studies on clauses, relationship among clauses, relationship between clause and rate of premium are needed in the 2009 ICC(Air), 2009 IWC(Air Cargo), 2009 ISC(Air Cargo), 2009 IWC(sending by post) et al.

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반인본주의적 역사연구와 프랑스 포스트모던 건축의 발생 (Anti-humanistic Historical Researches and Beginning of Postmodern Architecture in France)

  • 이종우
    • 건축역사연구
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    • 제22권3호
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    • pp.15-26
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    • 2013
  • This research takes as its object a body of historical researches by a new generation of French architects in the 1970s, who tried to confront the deep crisis in architecture since the years 1960. The research begins by noting that the ideology of the architect as an autonomous and transcendental subject, an ideology held by the architects of the previous generation, was a main target that young architects wanted to criticize and overcome. From this observation, the research focuses on a antihumanistic project which gave basis for a significant number of historical researches on modern architecture and was the result of a reappropriation of the French structuralism intensively developed in the human and social sciences of that time in France. After a series of textual analyzes, we argue that a new perspective on the city and the relationship of the latter with the architecture on the one hand, and the proposal for an "modest" architect as an alternative figure after rejection of the autonomous and transcendental one on the other hand, have been derived as the outcome of anti-humanist historiographic works. Finally, we assume that these historical adventure gave conceptual basis for postmodern architecture in France, freed from the modern myth of unity of author and that of work of art, but tinted by a moralism requesting modesty to architects.