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      • KCI등재

        성서 본문의 언어학적 연대 결정 연구사

        김동혁 한국구약학회 2015 구약논단 Vol.21 No.1

        The present study is a survey of scholarship on the linguistic dating of biblical texts. Avi Hurvitz has sought to establish a dating method for biblical texts on the basis of linguistic data. He has argued, first, that linguistic change in Biblical Hebrew (= BH) during the exile was so decisive that Early Biblical Hebrew (= EBH) of the pre-exilic period is clearly distinguished from Late BH (= LBH) of the post-exilic period; and, second, that, since EBH and LBH are distinct both in form and chronology, one can date biblical texts by using linguistic data only. Hurvitz’s method soon became a standard in the scholarly guild, and Hurvitz himself and other younger scholars produced studies that attempt to date biblical books/texts on linguistic grounds. These studies have treated, for example, the J source, the P source, Ezekiel, individual psalms, the prose portion of Job, Qoheleth, Esther, and so forth. Since 2003, a challenging voice crystallized through a succession of publications: an essay collection entitled Biblical Hebrew: Studies in Chronology and Typology (2003), volumes 46 and 47 of Hebrew Studies (2005-2006), and Ian Young, Robert Rezetko, and Martin Ehrensvärd’s Linguistic Dating of Biblical Texts (2008). The challenging voice, represented by Young, Rezetko, and Ehrensvärd, has argued the following: first, EBH and LBH are not completely distinct in form and chronology, though it is true that they are not identical. Second, EBH and LBH should rather be considered stylistic options from which the post-exilic biblical writers were free to choose. Third, accordingly, it is impossible to date biblical texts on the basis of linguistic data only. The present study, first, introduces Hurvitz’s method of linguistic dating and surveys the studies of Hurvitz himself and his followers; second, it examines the challenging voices against Hurvitz’s method; and, third, it discusses two of the most recent attempts published in 2012, Diachrony in Biblical Hebrew, edited by Cynthia Miller-Naudé and Ziony Zevit, and Dong-Hyuk Kim’s Early Biblical Hebrew, Late Biblical Hebrew, and Linguistic Variability, and probes their significance in the debate. 본 논문은 성서 본문의 언어학적 연대 결정 연구사이다. 본 소고가 개관하는 연구는 언어학적 연대 결정 방법론을 확립한 후르비츠의 연구, 후르비츠의 방법론을 받아들인 학자들의 연구, 후르비츠의 방법론에 대해 도전하는 최근의 연구, 그리고 사회언어학적 방법론을 사용하여 두 입장 사이의 화해를 모색하는 김동혁의 연구 등이다.

      • KCI등재

        강제환기가 적용된 시험공간에서 냉난방부하의 시뮬레이션 및 실증실험

        김동혁,홍희기,유호선,김욱중 대한설비공학회 2006 설비공학 논문집 Vol.18 No.12

        Building energy consumption according to the ventilation has been considered to be an important subject. The purpose of this study is to investigate the cooling and heating loads in a test space with a forced ventilating system. In the test space, on/off controlled air-conditioning and forced ventilating facility were operated between 8:30 to 21:00 during 4 days and some important data like temperatures and energy consumption were measured to obtain actual thermal loads. The simulation was carried out in a mode of temperature level control using a TRNSYS 15.3 with a precisely measured air change amount and performance data of air-conditioner. Heating load and cooling load including sensible and latent were compared between by experiment and by simulation. Both of thermal loads associated with ventilation show a close agreement within an engineering tolerance.

      • KCI우수등재

        공명관식 열음향 냉동기의 최적설계를 위한 수치모사 및 설계인자 분석

        김동혁,Kim, D.H. 대한설비공학회 1995 설비공학 논문집 Vol.7 No.2

        Basic refrigeration effect and efficiency of a thermoacoustic refrigerator is studied. The refrigerator model for numerical simulation is composed of half wavelength resonator and appropriate stack of plate. Theoretical model for thermoacoustic refrigeration suggested by Swift et. al is adapted for numerical calculation. The model contains arbitrary viscosity effect of the gas filled in the resonator. The wave equation is integrated by using 4-th order Runge-Kutta algorithm to give pressure distribution along the stack of plate. Heat flux and COP are also calculated based on the energy flux equation. By analyzing the numerical simulation results, optimum values of design parameters for thermoacoustic refrigerator are obtained.

      • KCI등재

        사물인터넷 보안전망 및 대응기술 연구

        김동혁,신기철 한국지식정보기술학회 2016 한국지식정보기술학회 논문지 Vol.11 No.5

        최근 사물인터넷(Internet of Things: IoT)이라는 개념으로 사람과 사물, 서비스를 통합하여 실생활을 편리하게 하기위한 다양한 제품과 서비스가 개발되고 있다. 사물인터넷은 다양한 기술의 복합적 특성으로 인해 기존 서비스와는 다른 특징을 가진다. 사물인터넷은 여러 가지 복합적인 요소기술이 통합되어 특정 서비스를 구성하기 때문에 각 요소 기술 자체의 보안 취약성과 네트워크로 연결되어 정보가공에 따른 새로운 보안 취약성 등이 발생할 가능성이 매우 높다. 때문에 인증/인가 기법, 접근 제어/권한 제어 기법, ID관리 기법, 키 관리 및 분배 기법, 신뢰 제어 기법 등 다양한 보안 기법이 요구되고 있다. 이에 본 논문에서는 안전하고 신뢰할 수 있는 사물인터넷 서비스를 제공하기 위한 사물인터넷 서비스 구성 기술 요소 각각에 대한 보안 기술을 체계적으로 살펴보았고, 사물인터넷 서비스 환경의 안전성 확보를 위한 보안 전략을 제시하였다.

      • KCI우수등재
      • KCI등재

        구 퍼지집합에 기반을 둔 퍼지시스템 신뢰도 분석

        김동혁,조상엽 한국지식정보기술학회 2023 한국지식정보기술학회 논문지 Vol.18 No.6

        Since the fuzzy set proposed by Zadeh has been applied to evaluate the reliability of fuzzy systems, various fuzzy sets have been used to analyze the reliability of fuzzy systems. Expressing the reliability of the system as an accurate value is a difficult problem due to the ambiguity of the data. It is possible to overcome these problems with fuzzy sets. Therefore, fuzzy sets provide a way to appropriately express the reliability of inaccurate data that occurs in the real world. In fuzzy sets, reliability is expressed as a real number, which is the degree of membership. In intuitionistic fuzzy sets, reliability is expressed as an interval using positive and negative membership degrees. In the Pythagorean fuzzy sets, reliability is expressed by expressing the positive and negative membership degrees as squares, respectively. Therefore, it is possible to solve the problem where the sum of the positive and negative membership degrees exceeds 1. In picture fuzzy sets, reliability is expressed based on positive membership, neutral membership, and negative membership. Since the picture fuzzy set uses a neutral degree of membership, it becomes possible to express uncertainty that is neither positive nor negative. In the spherical fuzzy sets, reliability is expressed by expressing the positive membership degree, neutral membership degree, and negative membership degree as squares, respectively. Therefore, it is possible to solve the problem in which the sum of the positive membership degree, the neutral membership degree, and the negative membership degree exceeds 1. And since the spherical fuzzy set can express all the properties of conventional fuzzy sets, it can be used in various environments. Therefore, it becomes possible to express the reliability of fuzzy systems in various environments using sphere fuzzy sets, thereby enabling more flexible reliability analysis.

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