자동문을 위한 무선 안전 장치 시스템 및 중앙 통제 소프트웨어 개발

문병현,박종수,최상민,최용운,제정광 대구대학교 정보통신연구소 2004 情報通信硏究 Vol.3 No.2

본 논문에서 고급형 실내 자동문의 설계 및 제작한다. 실내에서 사용되는 특성에 따라 소음이 최소화되어야 하며 미세한 물건이나 어린이의 작은 신체 일부가 자동문에 끼이는 안전사고를 방지하기 위한 안전장치가 필수적이다. 따라서 본 시스템은 IrDA의 적외선 방식과 용량성 센서를 이용한 안전 장치 시스템을 설계하고 자동문을 가정용 컴퓨터를 이용하여 직접제어 하거나 외부에서 이더넷(Ethernet)으로 접속하여 제어 및 표시할 수 있는 프로그램을 개발한다. 또한 지능형 빌딩과 같이 다수의 자동창문을 화재, 강제 환기 및 기타 관리를 위한 중앙 통제 관리 시스템으로 확장된 중앙 통제 소프트웨어를 개발을 하였다. In this paper, the automatic door for indoor use is designed and developed. Since the door is used indoor, the noise should be minimized and the accident that can happen by small object and childrens fingers strapped by the door would be prevented. Thus, Safety module by using infrared is designed and the program that controls the door using ethernet is also developed. For the use of the large intelligent building, the program that can control the multiple doors is also developed.

동북아 고대 해상무역제도에 관한 고찰 : 장보고의 통상네트워크와 관련하여

윤광운,박명섭,김재승,손성문 국제무역학회 2002 국제무역연구 Vol.8 No.1

본 연구는 통상사적 측면과 무역상무론적 관점에서 9세기 동북아 해상교역환경과 장보고의 해상무역의 실체를 규명함으로써 오늘날 동북아지역간의 통상협력을 통한 발전방향을 모색하는데 그 목적이 있다. 이를 위해서 본 연구에서는 9세기 통일신라, 중국의 당나라 및 일본을 중심으로 한 동북아지역의 해상교역제도의 일반환경과 발전요소를 분석하고, 장보고 해상무역의 특성 및 교역관행 그리고 물적·인적 네트워크를 통한 동북아 통상네트워크 기반을 분석하고 있다. 특히 동북아지역 통상네트워크의 구축을 기반으로 하고 있는 장보고 해상교역의 특성으로 우선 지리적으로는 고대 동북아지역을 중심으로 한 통일신라의 청해진과 중국 당대의 산동성 법화원 그리고 일본의 하까다지점을 연결하는 해상교역네트워크를 구축한 점이고 둘째, 해상교역관행으로 주로 중계무역형태와 선불제도관행, 통상정책적 제반활동을 수행한 점과 셋째, 해상교역의 주요 수단으로 신라의 항해술과 당대의 발달된 조선술을 기초로 하고 있음을 알 수 있다. 이러한 점은 해상교역을 통하여 새로운 시장과 제품, 신사고라는 국제교역의 동기를 바탕으로 하여, 오늘날에도 여전히 국제무역의 주요 요인으로서 향후 동북아지역의 새로운 통상환경의 기반을 더욱 촉진할 필요가 있다. The purpose of this paper is to survey the ancient marine trade in Northeast Asian Area and present the directions for developing through the economical cooperations among Korea, China and Japan in Northeast Asian district. In order to achieve of above purposes, this paper investigated the environments of marine trade and the practices of Changbogo's marine trade focus on Silla, Tang in China and Japan in the 9th century. The features of Changbogo's marine trade are as follows: First, geographically, Changbogo constructed marine trade network linking in Silla, Tang, Japan, in the center of ancient Northeast Asian areas Second, Types of marine trade is largely today's intermediary trade Third, His marine trade depended on the technical improvement of navigation and shipbuilding. These things are also central factors of today's international trade and they are necessary to open up a new market through the marine trade.

稻熱病 抵抗性에 關한 硏究

金明運,盧愼圭,白壽鳳,李成泰,任文淳,朴澤奎,李麗夏 건국대학교 1974 學術誌 Vol.17 No.1

This study was made to investigate the degree of rice blast disease developing in various plants and also the relationship between the disease developing and the amount of content of nutrients in rice plants which were differently dressed. Possibility for culture of rice-blast race was studied and the structure of infected leaves were observed by electron microscope. 1) The varieties sampled, Pung-kwang, Jin-heung, Pal-tal, Pung-ok and Tong-il, were seeded and cultivated in pots. When fifth or sixth leaf emerged, the races of blast T,C,N were innoculated in all varieties. In dressing test Pung-ok, which leas susceptible to blast, was dressed with nitrogen fertilizer in ordinary and twofold and in none-dressing or dressing of silicon fertilizer. When the fifth or sixth leaf was appeared, races T, C, N was innoculated in each varieties of pot. In all experiment the degree of infection was checked out according to the order of leaf, and at the same time, the relationship between the degree of disease developing and the contents of nutrients by determining the total nitrogen, total sugar, phosphoric acid, kalium, silicon dioxide soluble nitrogen and soluble sugar was studied. The occurance of symptom was relatively frequent in upper primary or secondary leaf in all varieties regardless of the kind of fertilizers or their dressing amount. Comparing the occurrencies of disease development in examined varieties, Jin heung was lowest and Pung-ok was highest, while Tong-il was completely free from the infection of the disease. The race T-type attacked most seriously the varieties of Jin-heung, Pal-Tal and Pung-kwang except Pung-ok, C-type was moderate and N-type was very weak in Pung-ok. In the amount of dressing, the occurance of disease was very rare in the rice plant of N-ordinary-silicon fertilizer dressed and frequent in that of nitrogen fertilizer-twofold-and-silicon fertilizer none dressed. The disease developing differed with the races, indicating T-type was most poweful, C-type moderate while N-type was weak. In the interaction between the contents of nutrients in riceplant and the degree of disease developing, Pung-ok, which was very abundant in nitrogen, phosporic acid, glutamic acid, asp artic acid glutamine, asparagine, cystine, serine and sucrose but little in sugar, kalium and silicondioxide, was most susceptible to the disease. Jin-heung, resistant one, was opposite to Pung-ok in all aspects. As a result there was a correlation between the kind or amount of nutrients in rice plant and the disease attack. According to the amount of dressed fertilizer, the rice plant dressed in N-twofold and silicon dioxide none dressed had the larger amounts of total nitrogen, phosphoric acid, aspartic acid, glutamic acid and gldtamine but little in sugar and silicon dioxide contents. While in the rice plant dressed with N-ordinary and silicon fertilizer. the tendancy of disease occuring was low respectively. 2) The study on the cultivation of race T,C,N in the media added such organic acid as succinic acid, valeric acid, malic acid, ketoglutaric acid and such phenolic chlorogenic acid and salicylic acid was made. The result of which was as follow: ① There were no differences in growth of T,C,N type races. ② In the media added organic acid the growth was favorable. ③ In the media added chlorogenic acid the growth was promoted but in the one added salicylic acid the growth was inhibited. 3) The morphological changes of the infected waves alls the structure of hypha of blast which had penetrated into the leaf cell of Pung-ok, which was susceptible one to the disease, was observed by electric microscope. The following facts were found. ① In healthy leaves normal nucleus, mitohcondria, chloroplast, entoplasmic reticulum, vacuole and cytoplasm, especially round substances, were chearly observed by electron microspcope. ② In the infected leaves, the space of the nucleus double memberance was enlarged, and some of the nucleu walls were destroyed. The thinlayer structure of glanalamelae in lamela system was enlarged, somewhere spates were appeared while stromas were disappeared. In mitochondria the spaces of the double membrance were enlarged. ③ Cytoplasm of cell which were attacked by hypha was completely destroyed and the hypha lost their normal structure. ④ In the structure of hypha which penetrated into the cell wall of epidermis, nucleus, mitochondria, round ectoplasmic reticulum, vacuole and substances were clearly observed.

항생제 다제내성균 Staphylococcus aureus SA2로부터 분리한 테트라사이클린 내성 플라스미드 pKH6의 염기서열

이대운,윤성준,김우구,신철교,임성환,이백락,문경호 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.4

한국에서 임산균주로부터 분리한 테트라사이클린(Tc) 내성 플라스미드 pKH6의 전체 염기서열을 결정하여 가장 대표적인 Tc 내성 플라스미드인 pT181과 비교하였다. pKH6의 전체 길이는 4439bp로 pT181과 동일하게 나타났으며 염기서열은 7개의 염기에서 차이를 보였다. 전부 다 염기쌍이 치환된 형태로 나타났으며 그 중 3개는 coding 부위에서 일어났다. coding 부위에서 일어난 경우에도 1개는 동일한 아미노산을 coding 하였기 때문에 pT181과 차이가 없었으며 RepC와 Pre 단백질에 있어 각각 1개의 아미노산에서 차이를 나타내었다. The complete nucleotide sequence of pKH6, a tetracycline-resistance (Tc^r) plasmid isolated from multi-drug resistant Staphlococcus aureus SA2, has been determined and compared with that of the staphylococcal Tc^r plasmid pT181. The nucleotide sequences of the two plasmids are in agreement except for 7 nucleotides. All differences are caused by base pair substitutions. Among 6 substitutions, 3 occurred in coding regions. However, only tow base substitutions in coding regions resulted in changes of amino acid sequences in two different ORFs of repC and Pre proteins.

IMT-2000용 수신단 One-chip MMIC의 설계 및 제작

신상문,권태운,최재하 울산대학교 2002 공학연구논문집 Vol.33 No.1

본 논문은 IMT-2000용 수신단 One-chip MMIC의 설계 및 제작에 관한 것이다. LNA, 이중 평형 믹서, LO 발룬, RF 발룬, 그리고 IF 증폭기를 하나의 칩에 집적시켰다. 새롭게 제안된 바이어스 회로는 공정상의 변화와 온도의 변화 등의 원인에 의한 문턱전압의 변화를 보상할 수 있다. 제작된 칩의 측정 결과는 모의실험으로 얻은 결과와 일치하지 않는다. LNA는 변환이득이 평탄하게 동작하지 않을 뿐만 아니라 발진현상도 나타났다. 문제에 대한 분석을 통해 원인을 찾았으며, 이 결과는 향후 연구에 사용하려고 한다. 믹서의 변환손실은 -14㏈, IP3는 4㏈m, 포트간 격리도는 25㏈ 이상인 특성을 나타낸다. 설계된 칩은 ETRI MESFET 0.5 ㎛공정으로 제작하였으며 칩 사이즈는 1.4㎜×1.4㎜이다 This is paper describes a design and fabrication of a one-chip receiver MMIC for IMT-2000. The LNA, double balanced mixer, LO balun, RF balun, IF amplifier and a bias circuit are integrated a chip. Each balun operates active and composed of MESFETs. The new applied bias circuit is able to compensate the variation of the threshold voltage caused by the process variation, temperature changes, and etc. The measured response of the fabricated chip doesn't correspond with the simulated performance, the LNA is not only the conversion gain doesn't operates flatly, but also even the oscillation presented. By the study of the cause about the problem, the factor was found. And the result will be deal with further study. The mixer achieves the conversion losses of -14㏈, IP3 of 4㏈m, and port to port isolation over 25㏈. The designed chip is fabricated by the ETRI MESFET 0.5㎛ process. The chip size is 1.4m×1.4m.

모유 수유아와 조제 분유 영양아에서 수유 방법에 따른 아미노산 농도 비교 및 혈청 트립토판 농도와 수면 유도와의 관계

정다운,김은영,양은석,박상기,박영봉,문경래 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.2

Objective: Sleep behavior is modulated by serotonergic neurons within the brain, and the synthesis and release of serotonin by such neurons is thought to be influenced by the availability of tryptophan, the amino acid precursor of serotonin. Formula-feeding infants have depressed plasma tryptophan concentration relative to breast milk-feeding infants. Because tryptophan alters sleep waking patterns in adults, a study was designed to determine the difference of sleep latency relative to differences in plasma tryptophan and tryptophan : large neutral amino acid (LNAA) ratio between formula-feeding infants and breast milk-feeding infants. Method: 45 newborns who were born in Chosun University Hospital from December 2002 to December 2003 were selected. The newborns were divided to three group, 15 newborns were fed breast milk and 15 newborns were fed formula A, and last 15 newborns were fed formula B. At 6 weeks and 12 weeks, infants were sampled for measuring of serum amino acid level and tryptophan, tryptophan : LNAA ratio. And we taught infants' parents to measure sleep latency that means the time after a feeding to the first episode of active REM sleep that persist ≥ 1 min. Result: 1) At 6weeks, Serum α-amino-n-butyric acid, citrulline, tryptophan level was higher in formula A group than breastmilk group (P<0.05) and proline level was lower than breast milk group (P<0.05). In formula B group, serum n-amino-n-buryric acid, citrulline, cystine, hydroxylysine, hydroxyproline, isoleucine, leucine, lysine, methionine, phenylalanine, taurine, threonine, valine levels were higher than breastmilk group (P<0.05). And Serum isoleucine, methionine, proline, valine level were higher in formula B group than formula A group (P<0.05). 2) At 12 weeks, serum glutamic acid, methionine, ornithine levels were higher in formula group A than breast milk group (P<0.05). Serum β-alanine, aspartic acid, α-amino-n-butyric acid, ethanolamine, glutamic acid, threonine level were higher in formula B group than breast milk group (P<0.05). Serum β-alanine, ethanolamine levels were higher and arginine level was lower in formula B group than formula A (P<0.05). 3) At 6 weeks, serum tryptophan concentration and tryptophan: LNAA ratio were higher in formula A group (P<0.05). Sleep latency was 21 minutes in formula group A, 24 minutes in breast milk group, 25 minutes in formula B group but there was no statistically significance (P>0.05). 4) At 12 weeks, serum tryptophan concentration and tryptophan: LNAA ratio, time after feeding to the first episode of active REM sleep were no difference with each other group. Conclusion: There is significant difference of serum amino acids between breast-feeding infants and formula-feeding infants. And serum tryptophan and tryptophan: LNAA ratio differ between brest-feeding infants and formula-feeding infants. But there is no association between serum tryptophan, tryptophan: LNM ratio and sleep latency.

골반 골절 환자에 있어서 골절 위치에 따른 하부 요로 손상의 연관성

신대은,문형윤,박성운,노준 朝鮮大學校 附設 醫學硏究所 2008 The Medical Journal of Chosun University Vol.33 No.3

Background and Objectives: Lower urinary tract injuries in pelvic bone fracture can lead to significant complication. We tried to find out the relationship between the fracture location and the bladder, urethra injury in patients who sustaining pelvic bone fracture. We thought that the fracture locations could serves as markers for injury. Materials and Methods: A clinical study was made on 43 patients who sustaining pelvic bone fracture with bladder or urethra injury in the Chosun University hospital during the period of 5 years from January, 2002 to December 2006. Diagnosis was done by retrograde cystography, retrograde urethragraphy, abdomenpelvic computed tomography. Results: Of the 43 patients reviewed, 27 patients had intraperitoneal type bladder rupture, and 12 patients had extra-peritoneal type bladder rupture. 9 patients had urethral rupture. Intraperitoneal type bladder rupture cases are most commonly associated with infrapubic ramus, suprapubic ramus and acetabulum. but the statistically significance is abscent (p= 0.642). Also extraperitoneal type bladder rupture cases are most commonly associated with infrapubic ramus, suprapubic ramus and acetabulum. but the statistically significance is abscent (p= 0.548). And all type bladder rupture cases are most commonly associated with infrapubic ramus, suprapubic ramus and acetabulum. but the statistically significance is abscent (p= 0.775). And urethral rupture cases are most commonly associated with infrapubic ramus, suprapubic ramus and acetabulum but the statistically significance is abscent (p= 0.528). Lastly, Combineded bladder rupture and urethral rupture cases are most commonly associated with infrapubic ramus, llium, Symphysis pubis. But the statistically significance is abscent (p= 0.462). Conclusions: In our study when there is a pelvic bone fracture, the fractured site of pelvic bone have no statistically association with lower urinary tract injury. But most common pelvic bone fracture site of all lower urinary tract injury cases is infrapubic ramus. Therefore, if infrapubic ramus fracture is found in the condition of pelvic bone fracture, it is highly likely to have lower urinary tract injury. More careful observation and diagnosis is necessary for this case.

탈지 환원유에서 Bifidobacterium longum의 호기성 고농도 배양에 관한 연구

구동환,하상우,조수현,박기문,김동운,강국희 성균관대학교 생명과학자원연구소 1997 生命資源科學硏究 Vol.4 No.1

The objectives of this study were to investigate the optimal condition for growth and highly concenterated culture of Bifidobacterium longum (Bif longum). The effects of additives were compared with titratable acidity and viable cell counts, and 10% reconstituted skim milk (no additive) was used as a control. Correlation coefficient for the growth of Bif. longun between CO_2 anaerobic jar method and overalaid medium method was R=0.99. When 1% Bif. longurn was inoculated on 12%, 14%, and 16% reconstituted skim-milk, viable cell counts were 8.60, 8.89, and 8.93 Log CFU/ml, respectively. When Lactose, Glucose, Glucosamine, Fructose, Peptone, N-acethyl-D-glucosamine, D-galactose, and liver extract were added to 16% reconstituted skim-milk, the viable cell counts were 8.61, 9.05, 9.15, 9.24, 8.82, 9.75, 9.17, and 9.64 Log CFU/ml, respectively. Therefore, D-galactose, liver extract, and N-acethyl-D-glucosamine were selected as final additives. When Bif longum was inoculated on Fermentor-I (16% reconstituted skim milk containing 0.1% yeast extract, 0.5% D-galactose and 0.5% liver extract), Fermentor-II (16% reconstituted skim milk containing 0.190% yeast extract, 0.590% N-acethyl-D-glucosamine and 0.5% liver extract), Batch culture-I (16% reconstituted skim milk containing 0.1% yeast extract, 0.5% D-galactose and 0.5% liver extract), and Batch culture-II (16% reconstituted skim milk containing 0.1% yeast extract, 0.5% N-acethyl-D-glucosamine and 0.5% liver extract), viable cell counts were 10.46, 9.37, 9.03, and 8.83 Log CFU/ml, respectively. Although liver extract was the important additive for the highly concentrated culture of Bif. longum in this study, it caused serious off-flavor when liver extract-1 (contained cell mass) was added to Fermentor culture. However, flavor was improved when liver extract-2 which was removed cell mass, was used instead of liver extract-1. Addition of 2% liver extract-II and 1% D-galactose had the similar effect with addition of 0.5% Liver extract-I and 0.5% D-galactose on the growth of Bif. longum.

水耕栽培시스템의 傅熱特性 및 養液冷却이 作物體溫에 미치는 效果

孫禎翼,金文基,南相運 서울대학교 농과대학 농업개발연구소 1992 서울대농학연구지 Vol.17 No.2

The purpose of this study was to make clear the heat transfer characteristics and effect of cooling the nutrient solution on the plant temperature during summer season in hydroponic culture system. Heat balance equations of plant and nutrient solution in hydroponic culture system were theoretically established and verified with experimental results. The following results were obtained. : 1) the conductive heat transfer through planting board and partitioning material occupied the most part of total heat transfer; more insulated and lower conductive material are required to reduce the cooling load of nutrient solution effectively. 2) plant temperature of leaf lettuce were dropped by 0.6℃(average) and l.5℃(maximum) with the nutrient solution cooling of 6℃, and by about 3℃ with sunlight shading of 50%; the successful hydroponic culture would be possible even during summer season, provided cooling the nutrient solution with simultaneous use of both ventilation and sunlight shading.

다구치법에 의한 고 규소 내산주철의 용해주조공정 최적화

신제식,이상목,문병문,김정철,한동운,백승한 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.2

In this study, Taguchi method, one of the design tools of experiments, was applied to optimize casting process parameters of the high silicon corrosion-resistant iron. Three casting process parameters such as melting temperature, rare earth metal (mischmetal) addition, and pouring temperature were chosen. Using SN (signal-to-noise) ratio calculated from ultimate tensile strength of each experimental casting run, the relationship between the casting parameters and mechanical properties was statistically evaluated. The casting condition of a melting temperature of 1,650℃, 0.2% rare earth metal addition, and a pouring temperature of 1,350℃ led to an excellent ultimate tensile strength above 11 kgf/mm², which is beyond the industrial criterion. The effects of the casting parameters on mechanical properties and corrosion resistance were further confirmed by combined analysis of fractography, hydrogen content determination, microscopic test, and acid resistance test. (Received August 23, 2004)