경량식 상부구조를 가지는 도시한옥에 관한 연구 - 대구 중구를 중심으로 -

박준현,조재모,Park, Jun-Hyun,Cho, Jae-Mo 한국건축역사학회 2013 건축역사연구 Vol.22 No.6

The purpose of this study is to look into the weight-lightening phenomenon of the roof structure of some Hanok(韓屋), the Korean traditional houses found from the survey on the distribution and actual state of urban traditional houses existing in the whole region of Jung-gu, Daegu, Korea. As a result of judging from the pre-test of building registers for the research area, approximately 5,000 wood structure houses were found. A field data survey based on these findings showed that there are 1,752 Hanok houses. And the further classification of the Korean traditional houses by roof structure type shows that about 35% of them underwent weight lightening. While this kind of light-weight Hanok is different from the concept of traditional Hanok, they also show the survival method of Hanok that reflects the economical and technological phases of that period. It is expected that deeper understanding on the urban traditional houses will be possible through carrying out in-depth researches on techniques of the light-weight roof structure of the urban traditional houses that are supposed to have functioned as dwellings as commercial products.

데이터베이스 파일의 삭제를 위한 미처리 연산의 효율적 수행 기법

박준현,박영철,Park, Jun-Hyun,Park, Young-Chul 한국정보과학회 2001 정보과학회논문지 : 데이타베이스 Vol.28 No.3

본 논문은 데이터베이스 관리시스템이 데이터베이스를 저장할 디스크 공간을 직접 관리하는 환경에서 데이터베이스 파일들의 삭제를 위해 미처리 연산을 정확하고 효율적으로 수행하는 기법을 제시한다. 미처리 연산의 수행과 관련하여 회복시에 회복 프로세스는 완료가 결정되었으나 아직 종료하지 않은 미종료 트랜잭션들의 아직 수행되지 않은 미처리 연산들을 식별하고 이들을 완전히 수행할 수 있어야 한다. 본 논문의 기본아이디어는 로그 파일에 기록된 로그레코드들을 분석함으로써 회복 프로세스가 그 연산들을 식별할 수 있게 하는 것이다. 이 기법은 ARIES의 트랜잭션, 퍼지 검사점, 그리고 회복의 수행을 확장한 것으로서 다음의 방법을 사용한다. 첫째, 회복시에 미종료 트랜잭션들을 식별하기 위하여, 각 트랜잭션은 트랜잭션의 완료와 미처리 연산 수행의 시작을 함께 나타내는 미처리연산수행시작('pa-start') 로그레코드를 기록한 후에 미처리 연산을 수행하며, 그리고 나서 트랜잭션 종료 로그레코드를 기록한다. 둘째. 회복시에 미종료 트랜잭션들의 미처리 연산 리스트를 복구하기 위하여, 각 트랜잭션은 미처리 연산수행시작 로그레코드에 그 트랜잭션의 미처리 연산 리스트를 수록하며 퍼지 검사점은 검사점종료 로그레코드에 완료가 결정된 트랜잭션의 미처리 연산 리스트를 수록한다. 셋째, 회복시에 다음에 수행할 미처리 연산을 식별하기 위하여, 각 트랜잭션은 미처리 연산을 수행하면서 변경하는 각 페이지에 대하여 그 페이지에 대한 재수행 정보를 기록하는 로그레코드에 다음에 수행할 미처리 연산의 식별 정보를 함께 수록한다. In the environment that database management systems manage disk spaces for storing databases directly, this paper proposes a correct and efficient scheme of performing pending actions for the removal of database files. As for performing pending actions, upon performing recovery, the recovery process must identify unperformed pending actions of not-yet-terminated transactions and then perform those actions completely. Making the recovery process identify those actions through the analysis of log records in the log file is the basic idea of this paper. This scheme, as an extension of the execution of transactions, fuzzy checkpoint, and recovery of ARIES, uses the following methods: First, to identify not-yet-terminated transactions during recovery, transactions perform pending actions after writing 'pa_start'log records that signify both the commit of transactions and the start of executing pending actions, and then write 'eng'log records. Second, to restore pending-actions-lists of not-yet-terminated transactions during recovery, each transaction records its pending-actions-list in 'pa_start'log record and the checkpoint process records pending-actions-lists of transactions that are decided to be committed in 'end_chkpt'log record. Third, to identify the next pending action to perform during recovery, whenever a page is updated during the execution of pending actions, transactions record the information that identifies the next pending action to perform in the log record that has the redo information against the page.

CBR 비디오 트랜스코딩 환경에서 버퍼의 선형적 분석

박준현(Jun-Hyun Park),한종기(Jong-Ki Han) 한국통신학회 2003 한국통신학회 학술대회논문집 Vol.2003 No.7

치매 선별검사 한국어판 Mini-Cog의 타당도

박준현(Jun-Hyun Park),이동우(Dong-Woo Lee) 대한노인정신의학회 2012 노인정신의학 Vol.16 No.2

Objective:The Mini-Cog, a composite of three word recall and clock drawing, was developed by Soo Borson as a brief test for discriminating demented from non-demented persons in a community sample. This study was conducted to prove the diagnostic va-lidity of the Korean version of Mini-cog. Methods:All 41 who met the criteria for probable dementia based on informant interviews and 88 with no history of cognitive decline were included. Sensitivity and, specificity of the Mini-Cog were compared with those of the Mini-Mental State Examination in the Korean version of the CERAD assessment packet (MMSE–KC), clock drawing test (CDT) and three word recall. Results:The Mini-Cog had the higher sensitivity (86.11%) than MMSE-KC and fair specificity (72.09%). Cut off points of Mini-Cog was 2/3. AUC of Mini-Cog was 0.819 (p<0.001). The Mini-Cog required minimal training to administer and no test forms of scoring modifications. Conclusion:It suggests that the Mini-Cog might be readily incorporated into general practice and senior care setting as a routine cognitive measure.

공황장애 증상 환자의 뇌파비교 분석

박준현 ( Jun-hyun Park ),정대규 ( Dae-kyoo Chung ),최정곤 ( Jeong-gon Choi ) 대구한의대학교 제한동의학술원 2016 東西醫學 Vol.41 No.4

Panic disorder is an extreme anxiety symptom that may lead to death accompanied by a panic attack. EEG was performed in 11 patients with panic disorder among patients who visited the the `H` clinic in Changwon from March 2015 to October 2016. The power spectrum comparative analysis showed the following results. 1. α wave was significantly lower (p <0.05) in the CP3, CPZ, P4, P8, O1, OZ, and O2 channels. 2. β wave was significantly higher (p <0.05) in patients with panic disorder in the FP1 channel. 3. There was no significant difference (p <0.05) in the θ wave between the panic disorder group and the normal group in the whole channel. 4. There was no significant difference (p <0.05) in the δ wave between the panic disorder group and the normal group in the whole channel. Based on this study, it is expected that additional studies on the changes of EEG after oriental medicine treatments such as herbal medicine and acupuncture treatment will be performed for patients with panic disorder. We also hope to develop a Korean medical treatment that stabilizes EEG.

홈페이지 서비스 품질 개선에 관한 연구

박준현 ( Jun Hyun Park ),전민수 ( Min Soo Jun ),곽춘종 ( Choonjong Kwak ) 한국품질경영학회 2012 품질경영학회지 Vol.40 No.4

Purpose: This research aims at quality improvement of website services on the internet. Methods: SERVQUAL is redefined for web environments as sixteen statements in five dimensions to identify user requirements for websites and measure their importance ratings. Quality Function Deployment (QFD) is used to integrate user requirements into service development for websites so that management and design guidelines can be obtained for user-oriented websites. Fuzzy set theory is introduced to resolve the ambiguity and subjectivity of user requirements in the House of Quality (HOQ). Results: The priorities of design characteristics are extracted from the Fuzzy QFD for University websites. Conclusion: It is expected to provide quality services in less time with less effort if the results of the Fuzzy QFD are used to provide services in a strategic way under limited resources.

AWGN 채널에서 VQ 부호책과 직교 진폭변조신호 좌표의 공동 최적화

박준현(Jun-Hyun Park),한종기(Jong-Ki Han) 한국통신학회 2002 한국통신학회 학술대회논문집 Vol.2002 No.7

유도전동기의 새로운 직접 토크 제어

박준현(Jun-Hyun Park),이경주(Kyung-Joo Lee),이득기(Deuk-Kee Lee),정종진(Jong-Jin Jeong),최종우(Jong-Woo Choi),김훙근(Heung-Geun Kim) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7

This paper describes a control scheme for direct torque and flux control of induction machines. The proposed predictive flux control scheme has directly calculated the reference voltage space vector based on flux errors in order to control the torque and flux.<br/> This proposed control scheme has not the requirement of a separate current regulator and proportional-integral (PI) control of the flux, torque, and/or current error, thereby improving transient performance and also has the advantage of less torque ripple in steady state with a fixed switching period. The effect of proposed method has been proven by simulations.

대구 성서산업단지 내 폐산의 재활용 네트워크 구축에 관한 타당성 연구

박준현(Jun-Hyun Park),최성우(Sung-woo Choi) 계명대학교 낙동강환경원 2012 環境科學論集 Vol.16 No.1

The study for feasibility on network building of industrial waste acid recycling system in Seongseo Industrial Complex was evaluated. Waste water occurrences current status of Seongseo Industrial Complexes is used to the department of Environment source, the MillinetSolar, Hanwhabicheol through representative companies in industrial complexes was visiting research. As a result, It was confirmed that resource cycle network through network was shown circulation and effectiveness of resource.

B^+-트리에서 키와 구분자의 저장과 탐색

박준현(Jun Hyun Park),박영철(Young Chul Park),이진수(Jin Soo Lee) 한국정보과학회 1997 정보과학회 컴퓨팅의 실제 논문지 Vol.3 No.6

데이타베이스 관리 시스템이 제공하는 B^+-트리는 사용자가 색인의 생성시 요구한 필드들의 수효, 순서, 데이타 유형, 정렬을 만족하여야 하고 이에 따라 키를 저장하며 필드들의 순서와 정렬에 따른 신속한 탐색 기능을 제공하여야 한다. 본 논문은 B^+-트리에서 키와 구분자의 저장과 탐색의 효율성과 성능을 향상시키기 위해 바다-II에 구현한 기법들을 제시한다. 바다-II의 B^+-트리는 다음과 같은 특징을 가진다. 첫째, 색인의 생성시 선언된 필드들의 순서와 각 필드의 정렬 유형을 준수하며 여러 가변길이 필드들을 지원한다. 둘째, 중복 키들을 키값과 오름차순으로 정렬된 다중의 레코드 식별자들로 구성된 색인 엔트리로 형성하며 구분자를 각 필드의 데이타 유형과 정렬 유형을 고려하여 후미 압축 방법으로 생성하거나 중복 키가 나누어지는 경우 키값과 레코드 식별자의 쌍으로 구성한다. 셋째, 키의 탐색은 키필드의 정렬 유형에 따라 하한값과 상한값을 결정한 후, 하한값에서 다음 스캔으로 수행하며 널값은 해당 필드의 데이타 유형이 가지는 최소값으로 한다. The B^+-tree, which is supported by database management systems, should satisfy user's index creation request of count, order, data types and sort types of key fields, store keys according to the specification of the index, and support fast search functionality based on the order and sort types of key fields. Based on the implementation of BADA-II, this paper presents techniques of the B^+-tree to improve the efficiency and performance in storing and searching of keys and separators specifically, The B^+-tree of BADA-II has the following characteristics. First, the order of fields and the sort type of each field are kept as they have been declared upon creation of the index and keys with multiple fields that might include multiple variable length fields are supported. Second, keys having the same key value are maintained as an index entry having a <key value, multiple record identifiers that are sorted m ascending order> pair, and separators are constructed either by applying the suffix compression technique to two different key values while considering data type and sort type of each field or, upon dividing keys having the same key value, by formulating a <key value, record identifier> pair. Third, after deciding the lower bound value and the upper bound value of the search range while considering the sort type of each field, the search starts for the lower bound value and then proceeds to the next key through the next scan scheme. We treat the smallest value of a data type as the NULL value of the data type.