대구시 아파트단지의 주차수요에 관한 연구

박찬돈,하재명,Park Chan-Don,Ha Jae-Myung 한국주거학회 2004 한국주거학회 논문집 Vol.15 No.5

After 1980's, the ratio of car possessions has been increased rapidly. Nowaday, most large cities have suffered a lot of problems about traffic and car parking. Specially in apartment complexes, they have parking problem which is caused by the parking demand. The ratio of parking demand at multi-family housing sites has been increased significantly, therefore several parking problems have occurred. The goal of this study is to investigate the parking demand per housing unit size of apartment complex in Daegu city. The results of this study is as follows. (1) The parking demand of 60 $m^2$ below sized housing unit is 1.09 car per the unit. (2) The parking demand of 60 $m^2$ over 85 $m^2$ below sized housing unit is 1.31 car per the unit. (3) The parking demand of 85 $m^2$ over 135 $m^2$ below sized housing unit is 1.74 car per the unit. (4) The parking demand of 135 $m^2$ over sized housing unit is 2.10 car per the unit.

퍼지 제어기를 이용한 차량의 자율주차 시뮬레이션

박재현,김승철,한창훈,박종오,임영도 東亞大學校 附設 情報通信硏究所 1998 情報通信硏究所論文誌 Vol.6 No.1

In a case of driving beginnners, it is very difficult to park a car perfectly because driver's knowledge makes more errors than intelligent mechanism when they are performed repeatedly. However skilled drivers be of experienced knowledge are able to park a car quickly. In this paper, we analyzed driving patterns of skilled drivers, designed the fuzzy controller to park based on it, and perform auto-parking simulation of a car using that controller.

Elevational Distribution of Breeding Bird Communities in Seoraksan National Park, Korea

Hwang, Hyun-Su,Lee, Jae-Kang,Eom, Tae-Kyung,Bae, Ho-Kyoung,Lee, Dong-Ho,Lim, Jong-Hwan,Jung, Sung-Cheol,Park, Chan-Ryul,Rhim, Shin-Jae Korean Society of Forest Science 2020 한국산림과학회지 Vol.109 No.1

In this study, the elevational distribution of breeding birds in Seoraksan National Park, Korea was investigated. Forty-six species of birds were documented from line transect surveys taken from Seorakdong at 230 m above sea level (a.s.l.) to the Daechungbong summit at 1708 m asl. Birdspecies richness and diversity were highest in Seorakdong and lowest at the Daechungbong summit. As elevation increased, bird species richness and diversity decreased, with a humped-shape trend being observed between 700 m and 1200 m a.s.l. Stepwise analyses revealed that breeding bird species diversity indices were significantly negatively correlated with elevation (r² = 0.327, P < 0.001) and positively correlated with vegetational coverage (r² = 0.324, P = 0.046). Higher elevations supported fewer birds than low and intermediate elevations. Projections at the local scale, including data on behavior and habitat use by birds, will be necessary for optimal conservation and management of the bird communities in Seoraksan National Park.

Elevational Distribution of Breeding Bird Communities in Seoraksan National Park, Korea

( Hyun-su Hwang ),( Jae-kang Lee ),( Tae-kyung Eom ),( Ho-kyoung Bae ),( Dong-ho Lee ),( Jong-hwan Lim ),( Sung-cheol Jung ),( Chan-ryul Park ),( Shin-jae Rhim ) 한국산림과학회(구 한국임학회) 2020 한국산림과학회지 Vol.109 No.1

In this study, the elevational distribution of breeding birds in Seoraksan National Park, Korea was investigated. Forty-six species of birds were documented from line transect surveys taken from Seorakdong at 230 m above sea level (a.s.l.) to the Daechungbong summit at 1708 m asl. Birdspecies richness and diversity were highest in Seorakdong and lowest at the Daechungbong summit. As elevation increased, bird species richness and diversity decreased, with a humped-shape trend being observed between 700 m and 1200 m a.s.l. Stepwise analyses revealed that breeding bird species diversity indices were significantly negatively correlated with elevation (r² = 0.327, P < 0.001) and positively correlated with vegetational coverage (r² = 0.324, P = 0.046). Higher elevations supported fewer birds than low and intermediate elevations. Projections at the local scale, including data on behavior and habitat use by birds, will be necessary for optimal conservation and management of the bird communities in Seoraksan National Park.

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.

동시회로를 이용한 ^(3)H, ^(14)C 방사선 측정에 관한 연구

박찬희,박재우 제주대학교 방사능이용연구소 2005 방사선응용과학연구소논문집 Vol.19 No.-

Pyrimidine계 액정의 중간체 합성

박승언,이찬재 建國大學校基礎科學硏究所 1993 理學論集 Vol.18 No.-

Pyrimidine계 액정 화학물 합성 과정의 중요한 전구물질인 1-dimethylamino-3-dimethylimino-2-(4-hydroxyphenyl)propene perchlorate와 4-((S)-2-methylbutyl)Phenylamidine hydrochloride를 합성하였다. Amidinium염은 4-((S)-2-methylbutyl)acetophenone으로부터 합성하였다. Amidine염과 perchlorate염의 반응에서 얻은 pyrimidine 유도체는 편광현미경과 DSC를 이용하여 분석한 결과 강유전성을 지니는 액정 화합물임을 알 수 있었다. The two synthetic intermediates for the preparation of pyrimidine type liquid crystals, 1-dimethylamino-3-dimethylimino-2-(4-hydroxyphenyl)propene perchlorate and 4-((S)-2-methylbutyl)phenylamidine hydrochloride, were synthesized. 1-Dimethylamino-3-dimethylimino-2-(4-hydroxyphenyl)propene perchlorate was prepared from the Vilsmeier reaction of 4-hydroxypheylacetic acid, and 4-((S)-2-methylbutyl)phenylamidine hydrochloride was prepared via 4 steps from 4-((S)-2-methylbutyl)acetophenone, respectively. The pyrimidine derivatives prepared from the amidine salt and perchlorate salt showed ferrolelectric mesophases by the DSC and polarized microscopic analysis.

생쥐 소장의 interstitial cells of Cajal에서 ATP-민감성 K^(+)통로를 통한 향도잡이 전류의 조절

박찬국,김만우,김형석,최석,전제열 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.1

Objectives: This study was performed to investigate whether ATP-sensitive K^(+) channels exist in interstitial cells of Cajal (ICC) of mouse small intestine and the physiological role of ATP-sensitive K^(+) channels in gastrointestinal motility. Methods: ICC were isolated from mouse small intestine and cultured for 2 days. Electrical activities of ICC were recorded using the whole-cell patch-clamp technique at 30°C. Results: ICC displayed rhythmic slow waves and spontaneous inward currents (pacemaker currents). Pinacidil, an ATP-sensitive K^(+) channel opener, induced membrane hyperpolarization and decreased amplitude of slow waves in current clamping mode. Also, pinacidil inhibited amplitude and frequency of pacemaker currents and activated outward currents at a holding potential of -70 mV. Pinacidil effects on slow waves and pacemaker currents were blocked by glibenclamide, a specific blocker of ATP-sensitive K^(+) channel. Forskolin, an activator of adenylate cyclase, induced membrane hyperpolarization and inhibited pacemaker currents like as pinacidil and blocked by glibenclamide. Conclusions: These results suggest that ATP-sensitive K^(+) channels exist in ICC and may be play an important role in regulating gastrointestinal motility through the modulation of pacemaker activities of ICC.

溫度變化를 고려한 窒素가스(GN₂)의 放電特性에 관한 연구

朴贊奎,朱宰賢 영남이공대학 산업기술연구소 1995 産業技術硏究 Vol.8 No.-

This paper describes the discharge characteristics of nitrogen gas(GN₂) for sphere-plane electrode with variation of temperature(0[℃]~-80[℃]) and gap length(d=1.0, 2.0, 3.0[mm]). Some important results obtained from this study are as follows. ① The breakdown voltage(V_(B)) increases with decreasing the temperature(T). ② The duration time of discharge(t) is longer with the decrease of the temperature(T). ③ The dependency of the temperature for breakdown voltage(V_(B)) increases with increasing the nonuniformity of the gap.

시험용 異狀電源 발생장치의 개발에 관한 연구

박찬원,노재관 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.A

Generally, electronic appliances are used on the basis of normal power source supply. The power source inevitably includes the abnormal condition, such as, sudden voltage sagging, power interrupt, and induced noises. As the electronic appliances which include micro-controller-based circuits are being increased recently, the controller circuit sometimes malfunctions by the abnormal condition of the power source. This situation causes serious problems such as hitch of electric appliance, fire and medical instrument glitch, which produces serious situations. In this paper, development of power interrupt tester which is highly suitable for an endurance test device under abnormal power source to microprocessor-based circuits is proposed 89C2051 microcontroller is performed to make power interrupt signal, and software controls peripheral hardwares and built-in functions. Experimental results of this study will offer a good application to electronic appliance maker as a test device of hardware and software debugging use.