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        • KCI등재

          공무원직장협의회의 현황과 제도적 개선방향

          박현철(朴顯哲) 한국지방자치학회 2001 韓國地方自治學會報 Vol.13 No.2

          The association of officials at office has been establishing and operating under the law of the association of officials executed from Jan. 1, 1999. At present, the association of official has been doing at 170 offices nationally. It is divided into the two views; one is the view under the law of labor-company conference which guarantee the officials' participation and another is one under the lew of solidarity right to establish the official association. It would be decided in accordance with the purpose and faculty of the law. I am trying to see the association of official as a former step to keep the basic right for the labor of official which has been accepted in a way of the lew of solidarity right that is permitted as the law of labor-company conference. This study is on (1) The fact of the labor unions of our official and the security scope of basic right for the labor generally, and also the security of basic right for the labor to the officials in America, England, French and Germany. (2) Grasping the general problems of the association of officials on the law and draw the point at issue, and (3) Suggesting the remedy for the association of officials at office.`

        • KCI등재후보

          Control Effect of New Developed Insecticide on Two Spotted Spider Mite (Tetranychus urticae Koch) Collected from Commercial Roses

          박현철,최인수,강점순 한국생명과학회 2003 생명과학회지 Vol.13 No.2

          채집된 점박이 응애 (Tetranychus urticae Koch)에 대한 신규 살충제의 방제 효과박현철1·최인수1·강점순2(1국립밀양대학교 식물자원학과, 2원예학과) To determine the effect of newly developed insecticide on two spotted spider mite, Tetranychus Urticae, populations, ten leaf discs were sprayed with three different concentrations (0.5%, 1.0%, and 1.5%) of the tested insecticide solution, and with a water-sprayed control. The tested insecticide solution was toxic to adult female and immature of two spotted spider mite, but was relatively non-toxic to eggs. For equivalent concentrations, more adult females were killed than immature stages. There was no marked difference between the hatch of treated and untreated eggs, although a weak trend between the numbers of unhatched eggs and the insecticide concentration after 7 days is shown.Key words - Two spotted spider mite, Tetranychus urticae, mititicide, mite control

        • KCI등재SCIESCOPUS

          Twisted Optical-fiber-based Acousto-optic Tunable Filter Controlled by the Flexural Acoustic Polarization

          박현철,이광조 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.67 No.3

          The spectral characteristics of twisted fiber-based acousto-optic filters are theoretically investigated. The influences of three types of flexural acoustic polarization states − linear, circular, and elliptical polarizations − on filter spectra are studied under realistic experimental conditions: a fiber length of 5 − 20 cm and a circumferential fiber twist angle of < 12. We will analytically show that either a single- or a dual-resonance filter spectrum is achievable depending on the input polarization state of applied acoustic waves and that the spectral position of each resonance peak can be scanned continuously and linearly in the wavelength domain by using the fiber twist. The feasible spectral tuning range of the resonances is calculated to > 80 nm for a twist angle of 12. We will describe how the transmission of each resonance peak can also be selectively tuned by adjusting the ellipticity of the input acoustic polarization from linear to circular. The results illustrate that our approach exploiting a combination of the fiber twist and acoustic polarization management offers an excellent route to the spectral shaping of all-fiber acousto-optic devices in that the transmission of multiple resonances, as well as their spectral positions, are readily and individually controllable in a single device configuration. In addition, we also propose a novel cosine apodization method to suppress the undesirable sidelobe spectra occurring between the dual resonance peaks. The technique is based on a cosine modulation of the AO coupling strength along the fiber, which is achieved by using a combination of the fiber's circumferential twist and the linear acoustic polarization. The proposed scheme is useful to minimize the crosstalk occurring between adjacent resonance peaks. We highlight that our approach is directly applicable to matched filtering as robust, adaptable, stable, and versatile optical filters.

        • KCI등재

          Forensic Database Platform for Searching and Interpreting Mixed DNA Profiles

          박현철,김미진,임시근,김종진,김양정,한면수,김원 한국과학수사학회 2017 과학수사학회지 Vol.11 No.3

          DNA analysis of crime evidence often involves mixed DNA profiles from several individuals. The mixed DNA interpretation has been continually studied in forensic genetics, with many programs developed for DNA mixture analysis. Although most of these are freely available for performing required calculations, some of them do not provide a database wherein mixed DNA profiles can be searched and managed. The ‘DNA law' was enacted in Korea, and the forensic DNA database is in operation except for mixed DNA profile. In this study, we developed a web-based system-the Forensic Mixed DNA Database (FMDD)-that allows searches of DNA profiles as well as statistical interpretation for matches. With the FMDD, a suspect's DNA profile can be searched against a database of mixed DNA profiles and vice versa. Moreover, the FMDD provides different probabilities including the random match probability (RMP), combined probability of exclusion/inclusion (CPE/CPI), and likelihood ratio (LR). The LR of mixed DNA profiles from two individuals can be computed to obtain customized statistical results using various options available in the program. The multifunctionality of the FMDD make it an essential tool for the crime investigation that is expected to enhance the value of mixed DNA profile analyses.

        • SCOPUSKCI등재

          신티그라피상 Resin에 의한 위배출시간 변화 및 그 기전에 대한 연구

          박현철,류호상,송치욱,현진해,최재걸 대한소화기학회 1998 대한소화기학회지 Vol.31 No.5

          Backgrouad/Aims: Gastric emptying scintigraphy is known as an effeetive method for the measurement of gastric functions. There are, however, few methodological investigations about the effect and mecbanism of the resin (arnberlite, RIA-410) on gastric emptying time (GET). The aims of this study were to evaluate the effect of resin on GET and to study its mechanism. Methods: For human study, we performed gastric emptying scintigraphy twice for each of 28 healthy volunteets. For the first scintigraphy, we fed them the test meal mixed with the labeled resin (resin (+) group) and then the same meal without the resin one week later (resin (-) group). In vitro study, we mixed three different fluids with the same test meal used for the above human studies and then separated them into two parts, fluid and solid components, by the centrifuge. We measured percentage of free technetium within the liquid cornponent. Results: The GET T1/2 values in resin (+) group were significantly longer than those in resin (-) group (p$lt;0.001). Two hour retention rates in the resin (+) group (38.3±13.0%) were significantly higher than those in the resin (-) group (25.3±12.3%)(P$lt;0.001). The resin (-) meals showed a higher percentage of free technetium in the liquid than the resin (+) meals. Conclusions: In the resin (-) group, the gastric emptying time was shorter and the percentage of free technetium was higher than in the resin (+) group. These results suggest that the rapid gastric ernptying in the resin (-) group is probably due to rapid emptying of unbound technetium along with liquid component of the meal.

        • 12주간 복합운동프로그램 실시에 따른 교육대학 여대생의 체중이 골밀도에 미치는 영향

          박현철,이광무 공주교육대학교 초등교육연구원 2015 敎育論叢 Vol.52 No.1

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          본 연구는 12주간의 복합운동프로그램에 따라 교대 여대생들의 체중이 골밀도에 어떠한 영 향을 미치는지 알아보고자 하는데 목적이 있다. 피험자는 현재 충청남도 소재 G 교육대학교에 재학중인 여대생 17명을 기준으로 2014년 3월부터 6월까지 주3회, 1회 80분간, 12주간 규칙적인 복합운동프로그램을 실시한 사전과 사후 신체조성 및 골밀도 검사를 실시하여 분석하였다. 자료 분석은 SPSS/PC 12.0 통계프로그램을 이용하여 평균(M)과 표준편차(SD)를 산출하였고, 사전과 사 후의 집단 간 차이를 비교하기 위해 two-way repeated measure ANOVA를 이용하였고 유의수준 a=.05로 설정하였다. 연구를 통해 얻어진 결과는 다음과 같다. 첫째, 교대 여학생의 운동을 통한 체중 약 2.6kg의 증가는 골밀도 0.019g/cm? 증가가 나타났다. 둘째, 교대 여학생의 운동을 통한 체중 약 1.88kg의 감소는 골밀도 약 0.0297g/cm? 감소가 나타났다. 셋째, 교대 여학생의 운동을 통한 체중 증가 중 근육량의 1.19kg의 증가는 약 T-score 0.27의 증가가 나타났다. 넷째, 교대 여 학생의 운동을 통한 체중 감소 중 근육량의 약 1.2kg의 감소는 약 T-score 0.44의 감소가 나타났다.

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