아파트 주차수요 변화에 관한 연구 : 대구지역을 중심으로 Focused on Daegu city area

박찬돈,홍성우,이상관 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(C)

For recent 30 years, the ratio of car possessions is rapidly increased according to economic growth. So, nowadays, most of cities and apartment complexes have suffered from traffic and parking problems. The purpose of this study is to provide proper future parking demand at apartment complex in Daegu city by we get the analysis date of the present parking demand. The method of this study is based on field survey of parking demand at apartment complexes in daegu city. The result of this study is as follows; 1) The parking demand has a limit. 2) The old aged apartment complex has more parking problems than the new apartment complex.

고속주축 모니터링용 광파이버 변위센서의 파이버 특성에 따른 센서 성능 연구

박찬규,신우철,배완성,홍준희,이동주 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

To make high speed spindle system work properly, sensors with outstanding resolution and dynamic characteristics are essential. An optical fiber displacement sensor is based on simple principles. Electrical signal responds to the optical flux change due to the displacement change between a target and a sensor probe. In this paper, the performance of optical fiber displacement sensor has been investigated according to properties of optical fiber. Firstly, optical loss has been measured before and after polishing optical fiber endface. Secondly, allowance of optical fiber bending has been tested. thirdly sensitivity and linear range of the sensor has been found out according to the shape of cross section of optical fiber.

고속주축 모니터링용 광파이버 변위센서의 레이저 다이오드 출력에 따른 성능평가

박찬규,신우철,홍준희,이동주 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

This paper is to develop an optical fiber displacement sensor for monitoring high speed spindle. Proper magnitude of optical power as well as amplification of output signal are necessary to improve sensitivity of the sensor. In this paper, to meet the need of improvement of the sensor resolution, we choose proper optical power and amplification level through speculating on optical power of a laser diode.

TDMA 셀룰라 시스템에서 개별-탭 계수를 이용한 적응 등화기에 관한 연구

홍성수,박래수,한현택,김학춘,정찬주,나상동 조선대학교 동력자원연구소 1995 動力資源硏究所誌 Vol.17 No.1

Demodulation wants to adaptive equalizer to minimize interference of intersymbol which generate in multipath fading channel results from signal time and variety multi propagation through channel in digital radio network systems. Therefore using transition ratio of transfer and receiver system and the number of forward and backward using existing individual taps, we study improvement algorithms which generated bit error ratio by signal in frequence select fading. We analysis and compare linear equalizer and decision feedback nonlinear equalizer. Proposed algorithm is more efficent in fading environment when compared of step size by channel character which estimated existing least square and ITLMS algorithm. In this paper, using ITLMS algorithm by decision feedback BER is reduced for intersymbol interference by narrowband TDMA multipath fading in invironment without individual tap weight overlay.

오리 嗅粘膜의 組織學的 및 組織化學的 硏究

朴在贊,金武剛,金弘善,申台均 충남대학교 의과대학 지역사회의학연구소 1988 충남의대잡지 Vol.15 No.1

This paper dealt with the histological feature of the Pekin duck olfactory mucosa and the specificity of the types of mucopolysaccharides present in the secretory cells of the duck olfactory mucosa. The nasal parts of ducks (1-week-old and 10-week-old) were fixed with 10% neutral formalin, decalcified, embedded in paraffin. Serial sections were cut 5 um thick and stained with alcian blue(pH 2.5) to demonstrate acidic mucopolysaccharides and the periodic acid-Schiff reaction to identify neutral mucopolysaccharides. The results were summarized as follows. 1. The duck olfactory mucosa consisted of the olfactory epithelia which compose of the receptor neurons, supporting cells, basal cells and goblet cells, and the lamina propria which contained Bowman's glands, olfactory nerve bunbles and connective tissue cells. 2. The thickness of the olfactory mucosa was 121.5±25.67um in the 1-week-old ducks, and 202±45.82km in the 10-week-old ducks. Increased thickness of olfactory mucosa was due to the increased thickness of lamina propria. 3. Histochemical techniques of the olfactory mucosa in 10-week-old ducks demonstrated that Goblet cells, sppporting cells and Bowman's gland contained both neutral and acidic mucopolysacc harides, the neutral mucopolysaccharides staining became enhanced first in the Goblet cells and Bowman's gland, and then in supporting cells. In 1-week-old ducks, both acidic and neutral mucopolysaccharides of Goblet cells reacted strongly, but those of supporting cells and Bowman's gland reacted presumably.

10MgO-10Fe_2O_3-30Na_2O-5OSiO_2 유리의 Mo¨ssbauer 효과 연구

홍치유,박관호,백승도,문찬호,조수열 동국대학교 1987 論文集 Vol.26 No.-

The Mo¨ssbauer effect studies of the quenched glass and heat-treated glasses were performed. The Debye and Einstien temperatures of the quenched glass, determined using the center shift and kinetic temperature, are 540K and 430K respectively. The X-ray diffraction pattern showed that the heat-treated glasses were crystallized. Form the isomer shift of the heat-treated glasses, it was concluded that the Fe^(3+) ion is predominantly octahedrally coordinated.

초등학교 체육교과전담제 운영실태에 관한 조사연구

박찬홍,신희강 公州大學校 스포츠科學硏究所 1996 스포츠科學硏究所論文集 Vol.- No.10

1. Conclusion The results which are accepted by this study follow : 1) The operation-actual condition of the expert system of physical education. ① The expert system was effective in reducing homeroom teachers' work burden. ② Although teachers needed it for a qualitative improvement of physical education, the system itself had not been settled yet. ③ Among art and physical education related subjects, the expert system of physical education was being enforced least. ④ Mostly, the whole classes of one grade or part of it were enforcing the expert system of physical education. ⑤ The expert teachers of physical education were nearly in their thirties. ⑥ The expert teachers of physical education averaged 16 classes or more a week. ⑦ Among the expert teachers of physical education, there were only 30 percentage teachers who majored or submajored in physical education. They had aptitudes and actual abilities in some degree. ⑧ The expert teachers said that facilities for physical education were in short. And the training of expert teachers were very inactive. Accordingly, the effectiveness was low. ⑨ As a whole the expert teachers observed the educational process well. However, Physical classes were progressed at their options instead of following educational curriculums. ⑩ The expert teachers were mainly appointed according to their voluntaries. In many cases, the expert teachers of physical education took charge of the other subjects. Also, most of them were disapprobatory in respect of being appointed again. 2) The problems in running the expert system of physical education. ① The most serious problem is that we don't have sufficient expert teachers in physical education because they avoid charging physical education. Namely, most teachers don't want to charge physical education at all. ② They indicated many problems in appointing the expert teachers of physical education. And most of them felt themselves to be short of their aptitudes and actual abilities. ③ Physical fatigue causes them to avoid the charge of physical education. ④ The most difficult trouble lies in the lack of the physical facilities. ⑤ As long as the work period is limited only one year, we can seldom expect the improvement of Physical Education in qualitative way. 3) The improvement advices in the expert system of physical education. ① We should remove the difficulties for teachers not to avoid charging the physical education. That is we should reduce the time, considering physical fatigue. Other subject teachers should change their recognitions that there must be the same physical times as other subjects. ② Expert teachers work period should be successive, not just one year, to consider quaiitative improvement of physical education ③ Considering that we don't have any institution to raise the expert teachers of physical education, there must be training education must be helpful for physical class practically. ④ Among those who are on the active list, we can secure the expert teacher of physical education. At this time, we must consider their aptitutes and talents. The expert teachers of physical education want to have berefit of reducing time most, to accomplish a short-term device. Also they want to secure the minimum-space by using unemployed classrooms. ⑤ We should connect further course in college with the expert teachers of subject. Also we should raise expert teachers of P. E. by collecting art and P. E. related departments, and the graduates from them should work as expert teachers of P. E. 2. Suggestion. In this study, I'd like to suggest the following : ① The rate of women teachers is absolutely high in the primary school. To accomplish the well balanced development of P. E, the women teachers with aptitudes and abilities should be encouraged to join. ② We must urge the teacher who studied physical course to participate in the expert system of P. E. ③ If we have difficulty in securing physical facility, of course not in all case, It is considered that non-occupied classrooms must be replaced into physical facility.

경부에 발생한 2새열낭종 2례

박홍주,박세찬,손영휘,윤천주,유선열 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.4

Developmental anomalies arising from the branchial apparatus include cysts, external sinuses, internal sinuses, and complete fistulas. Second branchial cleft cysts are by far the most common among these anomalies. It may occur at any age, being most common in the third decade, and more frequent in the male than in the female. It usually presents a smooth, round, nontender fluctuant mass located between the level of the tragus and the clavicle along the anteromedial border of the sternocleidomastoid muscle. It is lined by respiratory or squamous epithelium unless inflammation is present. The considerable amount of lymphoid tissue may be found beneath the epithelium. The treatment of choice of branchial cleft cyst is surgical excision. If the lesion is acutely infected, however, it is essential to relieve the infection prior to the surgery This report deals with two cases of second branchial cleft cyst. In case 1, the cyst had rapidly increased in size over pregnant period. In case 2, the patient presented the swelling in the left neck, and had the history of incision and drainage because of misdiagnosis as submandibular space abscess. The infection was treated by antibiotic therapy in the first place, and then complete surgical excision was made. There was no evidence of any recurrence or complications for these 3∼4 years.

고속 주축 상태 모니터링용 광파이버 변위 센서 설계 제작 및 성능평가

홍준희,박찬규,신우철,이동주 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

This paper is focused on practical applicability of the optical fiber sensor considering the machine center which is going to use them. Optical fibers may be fluctuated because the machine center operates as column moving type. This causes distortion of the sensor output signal. To reduce this problem, we have improved the sensor structure and its bracket. And we evaluated performances of the sensor.

차대차의 충돌 해석

박종철,이홍석,손성건,박종찬 內務部 國立科學搜査硏究所 1996 國立 科學 搜査 硏究所 年報 Vol.28 No.-