바이모달 트램의 위치 인식 방법 및 정밀 정차 구현

서기원(Seo Ki-Won),박주연(Park Ju-Yeon),이상남(Lee Sang-Nam),류희문(Ryu Hee-Moon),변윤섭(Byun Yeun-Sub) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월

This paper presents a method for precisely localizing and parking of bimodal trams. In order to gain an automatically driving system for bimodal trams, precise up-to-date localization, velocity recognition, distance to next station and precise parking location estimation functions are required. This paper proposes a system consisting of control device, steering device, sensor input equipment, driving system, tachometer, vehicle-side sensors, magnetic markers and magnetic sensors. The tram recognizes the precise location via magnetic markers containing information. Parking position and precise distance calculation is embodied by a tachometer. The vehicle-side sensors are used to assure safe station approaching and parking magnetic markers provide improvement of precision while tram parking. This paper provides a system realizing localization and precise parking and afterwards the automatic drive test results are reported and analyzed.

균류 분화과정의 유전적 조절기작

박범찬,이환희,박윤희,박희문 충남대학교 생물공학연구소 2003 생물공학연구지 Vol.9 No.1

Fungi are well suited for studying mechanism controlling development and cell differentiation in multicellular eukaryotes. The asexual and sexual reproductive cycles are tightly coordinated during the life cycle of Aspergillus nidulans. The asexual (mitotic) reproductive cycle involves the formation of a number of differentiated cell types. Successful formation of multicellular reproductive structures and spores (conidia) requires the establishment of spatiotemporal gradients in essential transcriptional regulators, such as brlA, abaA and wetA. Altered gene expression is coordinated with critical changes in the movement of nuclei and the regulation of the cell division cycle. Therefore, it has been proposed to define a central regulatory pathway. Several early regulatory genes involved in signal transduction pathway controlling asexual sporulation are also required for activating the central pathway. Sexual (meiotic) reproduction is more complex, requiring the differentiation of several specialized tissue types. Although technical difficulties have limited efforts to study the genetics of sexual fruiting-body formation directly, some recent progress has been made. With the recent availability of mutants blocked in sexual development, understanding the genetic interactions between genes that function primarily in determining sexual sporulation will be achieved in the near future.

간호실무에서 신봉이론(Espoused theories)에 대한 탐색적 연구

서문자,김혜숙,이은희,박영숙,조경숙,강현숙,임난영,김주현,이소우,조복희,이명하,지성애,하양숙,손영희,권성복,김희진,추진아 성인간호학회 2001 성인간호학회지 Vol.13 No.1

As a nursing practice involves nurses' actions in a specific context of health care, this study has focused on exploring the espoused theories in nursing practice within the action science perspectives, Espoused theories are the belief, principles, and rationale expressed by the practitioner as guiding her/his actions in a situation of practice. The data were analysed qualitatively and 25 elements of espoused theories of nursing action were identified and clustered into 6 categories. The 25 elements of espoused theories are as follows: The clinical nurse worked in wholistic and individual nursing, focussed on the patient's needed, comfort and supportive nursing (5 theories of nursing goal) ; excellent skills, knowledge based, assessment and data collection, explaining, educating or a scientific basis(6 theories of nursing intervention): advocacy, value oriented, treatment, account- ability and commitment(4 theories of nursing ethics) ; human respect. partnership, trust(3 theories of patient-nurse relationship) : knowledgable, accumulated clinical experiences and personally lived experiences. positive perspectives(4 theories of nurse), role of intervention. rewarding peer relationship(3 theories of situations) The above mentioned espoused theories are similar to that of nursing textbooks which students learned through basic nursing education and almost the same as the Acts ofa Nurse in Korean. However, we are doubtful whether nurses actually do as they think. Therefore. it is recommended to review the theories-in-use in order to and any discrepancies between the espoused theories and the reality of nursing actions

Candida albicans의 형태변환 조절과정 규명의 최근 연구 동향

박윤희,박희문 충남대학교 생물공학연구소 2009 생물공학연구지 Vol.15 No.-

The opportunistic fungal pathogen Candida albicans can grow as yeast, pseudohyphae or true hyphae, and morphology of each cell is essential for efficient dissemination and tissue invasion. Therefore the ability to switch in C. albicans is thought to be an important virulence factor. The morphological conversion of C. albicans can be triggered in vitro by a various environmental stimuli including serum, pH, temperature, and nutrient depletion. These inducers regulate the expression of hypha-specific genes, which are involved in morphogenesis, through multiple signaling pathways such as MAPK pathway and cAMP/PKA pathway. In order to investigate Signal transduction pathways, disruption or over-expression of the component gene(s) were performed and then change(s) in morphological transition as well as the expression of hypha-specific genes are observed in general. As the approach to unravel new roles of already-known signaling pathways in fungal pathogenicity, responses toward external stimuli such as hypoxic condition and iron utilization are performed these days. The new approaches revealed that the morphological conversion in C. albicans is resulted from the consorted action of multiple signaling pathways rather than from a single pathway. Consequently, the existence of a novel Signaling pathway for dimorphic switch in C. albicans could not be excluded. In this context, it is noteworthy that the involvement of LAMMER kinase in fungal development; LAMMER kinase is known to be involved in oxidative-stress response, filamentous growth, and flocculation in fission yeast; S. cerevisiae LAMMER kinase, ScKNS1, is also reported to phosphorylate Slt2, MAPK of cell wall integrity pathway, and to interact with dual-specificity phosphatase Sdp1, which regulates the activity of Slt2. Therefore, studies on the function of LAMMER kinase in C. albicans will be helpful to reveal novel regulatory mechanisms for virulence in pathogenic fungi.

급성 출혈성 대장염으로 오인된 궤양성 대장염 1예

문희정,장병익,김승범,이호찬,박재현,은종렬,김태년 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2

Ulcerative colitis (UC) is a chronic inflammatory disorder of the gastrointestinal tract that affects the large bowel, Its etiology remains controversial. However, an infectious or immunologic origin is considered the primary cause. The onset of UC is typically slow and insidious, but some patients may present acutely with symptoms mimicking infectious colitis. We report a case of ulcerative colitis mimicking acute hemorrhagic colitis at initial presentation. A 60-year-old man was referred to Yeungnam University Hospital for bloody diarrhea and abdominal pain. Sigmoidoscopy revealed mildly edematous mucosa in the rectum and hyperemic mucosa with petechiae in the sigmoid colon. The patient was treated with antibiotics for several days, and his symptoms improved. However, after one month, his bloody diarrhea relapsed. Follow-up sigmoidoscopy revealed mucosal friability in the rectum and sigmoid colon. He was diagnosed with ulcerative colitis, and his symptoms were improved with mesalazine and a steroid enema.

척추 골다공증에서의 골절 위험 한계치

박진영,유문집,유석주,이성철,박희곤,김명호 대한골대사학회 1995 대한골대사학회지 Vol.2 No.2

보건관리 대행사업 평가 지표 및 척도개발에 관한 연구

박정일,조병희,구정완,김광종,김현욱,원종욱,이명숙,이원철,정문희 가톨릭대학교 산업의학센터 2000 韓國의 産業醫學 Vol.39 No.3

This study was carried out to develop the index and the scales for the evaluation of the group occupational health services(GOHS). The possible variables of each step, firstly, based on an evaluation model composed of four steps, input, throughout, output and outcome, were selected through several meetings of professional committee. And five types of questionnaire(for doctor, nurse, industrial hygienist, employer, and employee) were developed based on the selected variables. A pilot survey for four GOHS institutions and 12 enterprises was conducted using the questionnaires and correlation analysis for extracting variables was done. The results were as follows: 1.The evaluation scale was composed of three areas(evaluation on workers' health and work environment, evaluation by institution and employer, and evaluation by employee)which were devided into ten subscales. 2.Among firstly selected ninety-six variables, forty-three variables (11 for input, 14 for throughout, and 18 for output indices) were extracted by correlation analysis. 3.Based on the extracted variables, the questionnaires were simplified as five items for doctor, thirty-six items for nurse, nine items for industrial hygienist, and twenty-six items for employer and employee. 4.The total score of evaluation model was defined on the basis of four-hundred points as sum of four indices (input, throughout, output and outcome) given one-hundred points each.

종합병원 간호사의 밤번 근무에 영향을 미치는 요인에 관한 연구

박혜자,유인영,이영미,정문희 한국보건통계학회 2003 보건정보통계학회지 Vol.28 No.1

This study is conducted to find influencing factors on unrse's night shift works. From 20th July to 20th August, the survey was performed in a general hospital located at Kyunggi-do area, by the use of questionnaire. Collected 204 data were analysed through SPSS/Win 11.0. Results are as follows: 1. It was shown that night shifting word periods in special ward is longer than that in general ward. Exactly, shifting periods of night nurse work is 28.7days, 16.7days in special and general ward, individually. But numbers of night nurse worker are 3.4 and 2.48 persons in special and general ward, individually. And there were more patients in general wards than that in special ward. Namely, 54.3 patients in general ward and 19.3 patients in special ward. And off duty days and overtime on average in general ward were more much than that in special ward. The preference about night nurse works, the general ward was higher than that in general wards. In case of avoiding the night nurse work, the reasons that were mental stress. excess of duty, the burdens on work by oneself in general wards were shown much more frequency than that in special ward. 2. Physical-mental, social conditon of nurse worker's health in special wards were better than that in general wards. The stress level of nurse workers in general ward was higher than that in special ward. The factors of the influence on the preference on social-mental conditions of health were number of off duty days on average per month, number of night nurse working, and income of all family. Therefore, theses results were shown that the stress of nurses in general ward was much more than that in special ward. And the preference on night nurse work in general ward was lower than that in special ward. Accordingly, It was shown that the policy for support were need. The nurse administrator have to prepare complementary systems in organized level, to develop the positive recognition about night nurse work. For example have to reduce the dissatisfaction with systematic improvement, in other words control of off duty bonus, reasonable overtime and night nurse work bonus, and night working periods, and with control nursing human power and policy for reduction of overstres according working conditions and characters of business in various types of ward.

3차원 직육면체 대공간 내에서의 열 및 기류 유동에 관한 연구

박원희,이상엽,황문섭,김태국 중앙대학교 기술과학연구소 2002 기술과학연구소 논문집 Vol.32 No.-

본 연구에서는 대공간 내에서의 열 및 기류 유동 현상을 연구하기 위하여 464×300× 950mm^3크기의 축소 모형으로 아트리움을 제작하였다. 가상 화재를 모사하기 위하여 대공간 하단에 히터를 설치하였으며, 히터의 온도에 따른 대공간 내의 온도분포를 측정하였다. 본 실험에서 얻은 결과는 아트리움과 같은 대공간에서 화재가 발생하였을 경우에 열 및 기류 현상을 해석하기 위한 기초자료 및 열유동 현상을 해석하는 수치해석 프로그램의 계산 결과의 기준 데이터로도 이용될 수 있을 것이다.

보우타이 패치 안테나의 초광대역화 설계

문수덕,박재일,최경,황희용 강원대학교 정보통신연구소 2005 정보통신논문지 Vol.9 No.-

In this paper, A ultra wideband antenna with electromagnetically coupled feeding is presented. The designed antenna is composed of Bow-tie patch with parasitic patch ground of a semicircular shape. The measured bandwidth of the designed antenna is from 2.5GHz to 8.3GHz for -10dB return loss (VSWR < 2). This antenna shows a similar radiation pattern of monopole and maximum gain better than ideal dipole throughout the operating frequency band.