Arbitrage, Equilibrium and Smooth Trades

Won, Dong-Chun,Kim, Choong-Hwan 경제경영연구소 2004 經濟經營硏究 Vol.2 No.-

남자 초·중학생의 무산소성 작업능력과 무산소성 파워의 관계

정동식,정덕조,정성태,이병근,전태원,김은혜,이동규,정동춘 師範大學 體育硏究所 1998 서울大學校 體育硏究所論集 Vol.19 No.2

The critical power(CP) is the highest intensity to sustain for a long time without a fatigue. The anaerobic work capacity(AWC) is the highest anaerobic capacity to be provided by anaerobic energy system without the infection of hypoxia. The purpose of this study was to determine the relationship between AWC and AnP and to verify the validity of AWC. The subjects were consisted of 10 elementary and 10 middle school male students(12.8±1.3yrs, 159.3±12.1㎝, 49.4±11.8㎏). The critical power and anaerobic work capacity were calculated by work-time relationship after four cycle ergometry test to fatigue from 1 to 10 minute. The anaerobic power included Margaria-Kalmen test, Sargent jump and Wingate test. The main finding were as follows. The AWC of elementary and middle school students. were 6.47±2.63KJ and 11.10±3.01KJ. The AWC of elementary students was 58.3% of the middle school students's one. The AnP of elementary students were 47.2∼66.5% of the middle school students's one. And there were high correlation between AWC and AnP(0.64∼0.87, P<0.01). This study showed that AWC is useful index on AnP both elementary and middle school students.

Kim,Dong-jo

장재철,김동윤,박영순,전철,김동조 群山大學校 自然科學硏究所 1991 自然科學硏究 Vol.6 No.-

홍삼 추출물이 반치사량정도의 방사선(5Gy)에 조사된 생쥐조직 및 이들 조직에서의 효소활성에 미치는 영향을 관찰하기 위하여 ICR계 생쥐를 대상으로, 생리적 식염수군을 대조구군으로 하여, 홍삼 추출물 투여군과 방사선만을 조사한군 및 홍삼 추출물 투여후 방사선 조사군 등 4군으로 나누어 1일, 4일, 9일, 17일 및 30일 등 5회에 걸쳐 생체의 조직중 비장 및 고환에서의 중량 변화 및 GOT와 GPT의 활성을 측정하여 결과를 얻었다. 비장의 중량변화는 1일째 및 4일째 최소치를 보이다가 이후 증가추세를 보였으며, 고환의 중량 변화는 17일 이후 급격한 감소로 30일에도 증가하지 못했다. GOT의 활성도 변화는 비장에서는 초기에 현저히 증가했으며 이후 회복하는 경향이었다. 방사선 조사군들에서는 홍삼추출물 투여군이 방사선만을 조사한 군보다 빠르게 회복하는 경향이었으며 고환에서의 GOT활성은 매우 불안정하였다. GPT 활성도 변화는 비장, 고환에서 모두 초기에 증가하다가 점차 회복하는 경향이었으며 홍삼 추출물 투여후 방사선 조사군이 방사선만을 조사한군보다 빠르게 회복하는 경향이었다. 이러한 결과로 볼 때 홍삼 추출물은 방사선 조사에 의하여 기인된 비장 및 고환의 GOT와 GPT활성도 증가에 방호효과가 있다고 생각된다. This study was prepared to observe the change of tissues weight, glutamate oxaloacetate transminase(GOT) and glutamate pyruvate transminase(GPT) activities in the spleen and testis treated with red ginseng extract injection in the gamma ray irradiated mice. Groups were divided into control, red ginseng extract injection, irradiation after saline injection and irradiation after red ginseng extract injection. The spleen and testis weights were decreased at 17th day irradiation after saline injection and irradiation after red ginseng extract injection. The GOT activity showed earlier recovery at irradiation after red ginseng extract injection group than irradiation after saline injection group in the spleen. The GPT activity showed earlier recovery at irradiation after red ginseng extract injection group than irradiation after saline injection group in the spleen and testis. The above result suggest that red ginseng extract have the recovery effect on the change GOT and GPT activity after radiation injury in the spleen and testis of mice.

Shelf Life Determination of Precooked Frozen Meat Dumplings

Lee, Young-Chun,Yang, Hyung-Sub,Kim, Dong-Ho 한국산업식품공학회 2002 산업 식품공학 Vol.6 No.3

Quality of frozen foods is significantly affected by the storage temperature and tie, and the consumers' demand for safe quality frozen foods is increasing. The objective of this research was to estimate the shelf life of frozen cooked meat dumplings, based on the changes in the selected physico-chemical and sensory quality attributes. Precooked frozen meat dumplings sampled from the same lot produced at a frozen food company in Seoul were stored at -10, -15, and -20℃. The meat dumplings sampled at 3- to 4-week intervals were subjected to the determination of volatile basic nitrogen (VBN), thiobarbituric acid (TBA), peroxide value (POV), surface color and shear value after thawing at 5℃ for 15 h. High quality life (HQL) was determined through the triangle test and practical quality life (PQL) through the scoring test. VBN, TBA and POV increased as the storage period was increased. HQL of the frozen meat dumplings were 189 and 252 days at -10 and -15℃, respectively. The estimated PQL were 349, 475, and 491 days at -10, -15, and -20 ℃, respectively. Statistical analysis indicated that there were significant relationships between sensory scores and VBN and POV of the stored meat dumplings. VBN was selected as the most reliable objective quality index for the shelf life determination (PQL) of the precooked frozen meat dumplings.

웨어러블 캠을 이용한 요양보호사 범죄피해 방지 방안

이동임(Lee Dong Im),천정환(Chun Jung Hwan) 사단법인 안전문화포럼 2021 안전문화연구 Vol.- No.12

노인 인구의 증가로 각종 질병, 노화 등으로 거동이 불편한 사람들은 스스로 일상생활을 할 수 없으므로 요양보호사의 돌봄을 받아야 한다. 요양보호사는 일정한 교육을 받고 시험에 합격해야만 요양보호사 자격이 주어진다. 요양보호사는 이렇게 전문성을 갖추고 간병의 질적 서비스를 제공하기 위해 노력하고 있다. 이러한 노력에도 불구하고 요 보호자에 의한 요양보호사에 대한 신체적 폭력, 언어적 폭력, 성범죄 등이 행해지고 있다. 이로 인해 요양보호사는 심한 스트레스에 노출된 채 업무를 하고 있다. 이러한 범죄의 문제점을 지적하고 그 문제에 대한 대응방안을 논의하는 것이 연구의 목적이다. 연구의 방법으로 선행 연구논문이나 연구보고서 등을 바탕으로 요양보호사에 대한 범죄 발생의 실태를 살펴보고 이를 바탕으로 어떤 유형의 범죄가 발생하는지와 그 범죄 발생에 대한 다양한 문제점을 파악하는 것이다. 다음으로 인터넷 자료를 통해 요양보호사에 대한 다양한 범죄 발생 사례 등을 통하여 범죄가 발생할 수밖에 없는 구조적 문제점을 파악하고 그 범죄의 심각성을 논하는 것이다. 연구결과 요양보호사에 대한 요보호자의 범죄는 증거확보의 어려움과 소속기관의 묵인이 맞물려 계속 발생할 수밖에 없는 구조적 한계를 가지고 있다. 따라서 요양보호사가 웨어러블 캠을 이용하여 범죄 장면을 촬영함으로써 증거를 확보할 수 있고 그 증거를 바탕으로 가해자를 처벌할 수 있으므로 범죄예방과 근절을 기대할 수 있다. 웨어러블 캠 시행에 따른 요보호자의 사생활 침해문제, 웨어러블 캠 탈취 및 파손, 예산문제, 고장, 촬영물에 대한 증거능력 인정문제, 법률상 문제 등 다양한 문제점이 나타날 수 있다. 따라서 지방자치단체 한 곳을 정하여 시범운영을 하여야 한다. 그 이유는 운영으로 인한 예상하지 못한 다양한 문제점이 나타날 수 있고 그 문제에 대한 개선과 효과성 검증이 이루어진 상태에서 전국적 확대시행이 되어야 하기 때문이다. 결론적으로 인간의 한계를 극복할 수 있는 첨단과학을 이용한 범죄예방 및 근절은 앞으로 우리가 나아가야 할 방향이다. 2020년 10월 20일 국회의원 정춘숙 의원이 요양보호사에 대한 범죄의 심각성을 인식하고 범죄근절을 관계기관에 요청하고 있다. 하지만 현재까지 그 기관은 뾰족한 대책을 제시하지 못하고 있다. 그 이유는 아마도 요양보호사에 대한 범죄 방지 대책을 수립하기가 쉽지 않기 때문일 것이다. 따라서 본 논문은 관계기관에서 대책을 수립하는데 조금이나마 보탬이 될 수 있도록 한다는 점에서 의미가 있다. The increase in the elderly population means that people who have difficulty moving due to various diseases and aging cannot live their daily lives on their own, so they should be taken care of by a caregiver. Nursing caregivers are eligible for nursing care only when they receive a certain education and pass the nursing caregiver test. Therefore, caregivers are trying to be professional and provide quality services for care. Despite these efforts, the guardian practices physical violence, verbal violence, and sex crimes against nursing caregivers. As a result, caregivers are working under severe stress. The purpose of the study is to point out the problems of these crimes and discuss how to respond to them. The research method is to identify the actual state of crime against caregivers based on prior research papers or research reports. Based on this, it is to identify what types of crimes occur and various problems about them. The next step is to identify various cases of crimes against caregivers through Internet data. Based on the case, the government identifies structural problems that inevitably lead to crimes and discusses the seriousness of the crime. According to the study, the crime of the caregiver against the caregiver has structural limitations that inevitably occur due to the difficulty of securing evidence and the acquiescence of the affiliated institution. Therefore, it is possible for caregivers to secure evidence by filming crime scenes using wearable cameras and punish perpetrators based on the evidence, so crime prevention and eradication can be expected. Various problems can arise from the implementation of wearable cameras, including privacy violations of key guardians, theft and damage of wearable cameras, budget problems, breakdowns, recognition of evidence ability for photographs, and legal problems. Therefore, one local government shall be determined and operated on a trial basis. This is because various unexpected problems can arise from the operation, and it should be expanded nationwide with improvement and effectiveness verification on the problem. In conclusion, crime prevention and eradication using high-tech science, which can overcome human limitations, is a way forward. On October 20, 2020, lawmaker Chung Chun-sook recognizes the seriousness of the crime against nursing care workers and asks related agencies to eradicate the crime. But so far, the agency has failed to come up with a sharp measure. The reason may be that it is not easy to establish crime prevention measures for caregivers. Therefore, this paper is meaningful in that it allows related agencies to contribute a little to establish countermeasures.

동종 조혈모세포이식 후 발생한 크립토콕쿠스 척추염 1예

고윤호,임동준,이성수,조유경,이동건,최정현,김유진,민창기,김동욱,박정미,김춘추,신완식 대한감염학회 2001 감염 Vol.33 No.4

Skeletal cryptococcosis is an uncommon infection. Cryptococcus is a common cause of meningitis and infects 7∼10% of patients with AIDS. As well as AIDS, the infection may be seen in association with leukemia, lymphoma, Hodgkin's disease, sarcoidosis, tuberculosis and diabetes, also in patients on steroid medication. But there is no case report of skeletal cryptococcosis following allogeneic hematopoietic stem cell transplantation. A 40-year-old woman was admitted to the hospital because of low back pain. She had chronic myelogenous leukemia for 2 years and underwent allogeneic hematopoietic stem cell transplantation 8 months ago. She have been treated with steroid and cyclosporine orally because of chronic graft versus host disease. On examination she was afebrile and had posterior lower lumbar tenderness. But, she had no reduced strength of low extremities. Open biopsy was underwent. Histology demonstrated budding, round-to-oval, refractile yeast-like organisms within debris. The results of a lumbar puncture were unremarkable and cerebrospinal fluid culture failed to grow bacteria and yeast. The patient was treated with amphotericin B (1 gram) and AmBisome□ (2.8 gram) over 6 weeks. Three months after cessation of therapy, the patient was doing well.(Korean J Infect Dis 33:298∼301, 2001)

압출성형에 의한 국산 무연탄 활성탄의 세공구조 변화

이송우,문장천,김도한,이창한,최동훈,류동춘,송승구 부산대학교 환경문제연구소 2000 環境硏究報 Vol.18 No.-

The purpose of this study is to investigate the variation of pore size distribution of the coal-based extruded activated carbon. The extruded activated carbon was prepared by extruding the mixture of coal powder and coal tar. Pore size distribution of the extruded activated carbon was compared with that of the extruded coal and the extruded char. Also it was compared with that of the crushed activated carbon, raw coal and char. The extruded coal had coarser surface than that of raw coal. Macropores of the extruded coal were funned near 10,000Å in diameter during carbonization process and steam penetrated easily between particles and were growing between 3,000Å and 20,000Å in diameter during activation process.

서울 서남부지역 노인 인구에서 비만증 유병률과 고지혈증과의 상관성

최경묵,조영직,김경오,김동림,김난희,백세현,안정천,서홍석,오동주,최동섭 대한노인병학회 2000 Annals of geriatric medicine and research Vol.4 No.3

흰쥐 삼차신경 척수감각핵의 미측소핵 세포의 전압의존성 소디움통로와 포타슘통로에 대한 전기생리학적 연구

천상우,최정희,김권수,유용묵,김종구,이동근 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.1

The caudal subnucleus of the spinal trigeminal nucleus (medullary dorsal horn ; MDH) receives direct inputs from unmyelinated and thinly myelinated, small diameter primary afferent fibers. Thus, the MDH is implicated in the processing of nociceptive information in the orofacial region. In this study, the types and characteristics of voltage-dependent ion currents were investigated in acutely isolated MDH neurons of postnatal rats by means of the whole cell patch clamp techniques. Coronal slice (400㎛) of the trigeminal caudal subnucleus region was sequentially treated with pronase 0.2㎎/㎖. then single neurons were mechanically dissociated. Voltage-dependent sodium currents showed that the half-maximum activation potential was -41.8±1.8mV and half-maximum inactivation potential was -62.4±3.0mV. And the currents were blocked totally by application of 100nM tetrodotoxin. In a Ca^2+ free solution, low-threshold transient (I_A) and high-threshold sustained (I_K) currents were recorded. The half-maximum activation and inactivation potential of I_K were 2.5±1.9mV and -37.1±2.3mV, respectively. I_A was activated and inactivated more rapidly than I_K. The half-maximum activation and inactivation potential were -21.6±6.3mV and -84.5±5.0mV, respectively. When a 4-aminopyridine of 5mM was applied, I_A was almost totally blocked. These results reveal that MDH neurons express a variety of voltage-dependent ionic currents with distinct physiological and pharmacological properties, and they play an essential role in the transmission and modulation of sensation, especially pain, from trigeminal region.

道와 存在 : 노자와 하이데거의 근본사상 비교

全東震 水原大學校 1997 論文集 Vol.15 No.-

Dieser Aufsatz erortert die gedankliche Nahe und Ferne zwischen Heidegger und Lao-tzu. Das namenlose 'Tao' des Lao-tzu entspricht nicht Heideggers 'Sein' bzw. 'Ereignis'. Von Heidegger her gesehen ist es ein metaphysisches Wort. Aber Lao-tzus Konzeption von der Weghaftigkeit als Grundcharakter allen Ph anomens und dem 'Nicht-Tun' als der Weise der ursprunglichen Antwort des Menschen zu dem in sich bewegten Phanomen zeigt eine Verwandtschaft mit Heideggers Konzeption des weghaften Seins und der 'Gelassenheit'.