캐쉬 효율성을 고려한 Deap 알고리즘에 관한 연구

金京勳,鄭均樂 弘益大學校 科學技術硏究所 2000 科學技術硏究論文集 Vol.11 No.-

Modern computer use caches to reduce the gap between processor speed and memory access time. The cache performance has an increasingly large impact on the performance of algorithms. But most of algorithms have been designed to minimize instruction counts and the cache performance was not considered. In this study, we have developed extended deap algorithms to maximize cache utilization and shown by experiments that our algorithms are superior to traditional deap algorithms in average execution time. In this paper, we present an integrated strategy of partitioning and scheduling. We apply FDS technique for the scheduling. But, we use the relative scheduling urgency for partitioning that is the effect of an assignment of a node to a specific time step. The proposed algorithm produced good results and better execution time than paper [14]'s results for all benchmarks. In the future, we should include the communication costs between hardware and software components.

한국산야생등줄쥐(Apodemus agrarius coreae)의 해마복합체에서 neuropeptide Y 면역반응세포에 관한 연구

김무강,송치원,이경열,박일권,정영길,이강이,김종섭 충남대학교 수의과대학 동물의과학연구소 1997 動物醫科學硏究誌 Vol.5 No.-

Neuropeptide Y(NPY) was first isolated from porcine brain. This discovery has lead some workers to study the distribution of this peptide in the central nervous system of various mammals. In this study the distribution pattern of neuropeptide Y-immunoreactive neurons was examined in the hippocampal complex of Striped field mouse in Korea(Apodemus agrarius coreae) Experimental animals were anesthesized with thiopental sodium and perfused with 4% paraformaldehyde through the left ventricle and the ascending aorta. The brains were removed and transferred 10%, 20% and 30% sucrose solution. Sections were cut on a cryostat into 40㎛-thick. The tissue was immunostained with free-floating and avidin-biotm complex(ABC) method. The results obtained in this study were summarized as followings. 1. The most of NPY-IR neurons in hippocampus proper were found in the polymorphic layer and a few was found in the pyramidal layer. 2. The process run vertically in the deep polymorphic layer and run parallel to corpus callosum in superficial polymorphic layer. 3. The shapes of neurons in hippocampus proper were varied of polymorphic, oval or round, and the nerve fibers were found in the molecular laver and the hippocampal fissure. 4. The highest density in number of NPY-IR neurons on dentate gyrus were found in hilar area of dentate gyrus. 5. The most of NPY-IR nerve fibers were found in molecular cell layer.

유색미에 관한 연구 : Ⅲ. 유색미 유망계통에 대한 주요 생육 특성

김광수,최윤표,김선택,최현구,정종태,김보경,유지홍,이희봉 충남대학교 농업과학연구소 2007 농업과학연구 Vol.34 No.2

국내외 유색미 수집종을 돌연변이원에 의해 유기된 우수 계통과 수집종간 상호교배에 의해 선발된 CNU 20계통을 파종하여 얻어진 주요 작물학적 특성을 살펴보면 다음과 같다. 1. 간장은 유색 메벼인 CNU126 계통이 대조품종인 동진벼와 같이 가장 컸고 메성인 CNU 128계통에서 가장 작았다. 2. 주당 분얼수는 CNU3, CNU50. CNU56, CNU112 계통에서 가장 많았고 대조품종과 CNU 128 계통에서 10개 미만으로 가장 적게 나타났다. 3. 수장은 육성 계통 중 CNU88 계통에서 가장 길었으나 대조구보다 짧고, 육성계통 중에서는 CNU 126 계통이 가장 짧았다. 4. 주당 영화수는 대조구인 동진벼보다 CNU50 계통에서 2배 이상 많았고, CNU158 계통에서 가장 적게 나타났다. 5. 천립중은 CNU113 계통에서 30g이상으로 대조구와 같이 가장 무거웠고, CNU128 계통에서 20g으로 가장 적었다. 6. 주당 수량은 대조구의 26.6g에 비해 CNU50, CNU112 계통에서 두배정도 높았고, CNU128, CNU158, CNU200 계통에서 가장 낮게 타나났다. Aims of this study were carried out to develop the useful lines induced from mutation and pedigree breeding methods among the collected genetic resources from national and domestic areas. In this study, Stem height of CNU126 line and check among them were high, while CNU128 was lower than other lines. Spiklet length of CNU88 was longer, but that of CNU126 was shorter than check. Number of spiklets per plant of CNU50 among lines have twice time than check. 1,000 grains weight of CNU113 was higher than check. In yield per plant, CNU50 and CNU112 were higher than check, Dongjinbyeo.

범하수체 기능저하증을 동반한 일차성 중추성 림프종의 1예

김원영,김원,조규종,홍정석,이미우,장성은,오세현,임경수 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

A primary central nervous system lymphoma(PCNSL) is defined as a lymphoma limited to the cranial-spinal axis without systemic involvement. PCNSLs were formerly very rare, only 0.5∼ 1.2% of all intracranial neoplasms, and were usually associated with acquired immuno-deficiency syndrome(AIDS) and other immune-compromised states. Recently, there has been a clear rise in the incidence of this disease among normal individuals. We describe a 77-year-old female with hyponatremia who presented with a confused mental state. Computed tomography(CT) of the brain demonstrated a suprasellar mass with enhancement. We evaluated the basic hormonal studies and the magnetic resonance imaging(MRI). A ventricular biopsy was done, and the result was a diffuse, large, B-cell-type malignant lymphoma. She presented panhypopituitarism and partial central diabetes insipidus. She received chemotheraphy and was discharged in an improved condition. We report a case of panhypopituitarism due to PCNSL and give a review of the literature.

종격동 종괴를 의심케한 우대동맥궁 1례

김만우,백학연,정춘해,장경식,홍순표,조건국,김종진 朝鮮大學校 附設 醫學硏究所 1987 The Medical Journal of Chosun University Vol.12 No.1

Developmental anomalies of the aortic arch, commonly known as vascular rings, are relatively rare congenital vascular anomalies which can compress the trachea and esophagus. One routine chest film of a patient who was checked and hepatoma-diagnosed in Internal Medicine, Chosun University Hospital left the room for doubt of mediastinal mass. But no subjective symptoms for the mass was told by the patient. This is to report our experience of a patient having right side aortic arch with aberrant left subclavian artery, as proved by diagnosis, but none of congenital heart disease. This right side aortic arch with aberrant left subclavian artery is the most frequent type among right aortic arch, the anomaly of which is usually detected from the incidental suspicion for mediastinal mass at routine chest film; because no symptoms are accompanied therewith.

생체내 심근허혈-재관류 모델에서 멜라토닌의 재관류 부정맥에 대한 심근보호작용에 관한 연구

조규종,김원,홍정석,이미우,장성은,오세현,임경수 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: Recently, a few studies demonstrated that melatonin reduced the severity of myocardial reperfusion injuries, such as reperfusion arrhythmias. However, it is uncertain whether the melatonin reduces reperfusion arrhythmias in thus anesthetized animals because results were obtained using isolated hearts. Thus, to see whether melatonin reduces reperfusion arrhythmias in anesthetized animals, we examined the effect of melatonin on the incidence of reperfusion arrhythmias in an anesthetized-cat model of regional ischemia. Method: Adult mongrel male cats(n=30, 2.9∼4.2 kg) were anesthetized under positive-pressure artificial ventilation with room air. The animals of the control group(n=15) were subjected to 20-minute left anterior descending coronary artery(LAD) occlusion followed by abrupt reperfusion. The animals in experimental group(n=15) were divided into two. Group I(n=6) was pretreated with melatonin, 1 mg/kg, before occluding the LAD. Group II(n=9) was pretreated with melatonin, 10 mg/kg. The animals in experimental group were subjected to ischemia/reperfusion insult following drug treatment: melatonin was applied intra-peritoneally for 3 minutes just before LAD coronary artery ligation. The Fisher's exact test was used to compare the data from different animal groups. p<0.05 was considered significant. Results: The incidence of ventricular fibrillation(VF) during the reperfusion phase in group II(pretreated with melatonin, 10 mg) was significantly smaller than that in the control group(p-value = 0.0029). However, no statistically significant difference of VF incidence was found between group I(pretreated with melatonin, 1 mg) and the control group. Conclusion: Employing an anesthetized-cat model of regional cardiac ischemia, we investigated the dose-dependant effects of melatonin on reperfusion-induced arrhythmia. The cats pretreated with 10 mg/kg of melatonin before ischemia had a significantly reduced incidence of lethal reperfusion-induced arrhythmia, but there was no difference between the cats pretreated with 1 mg/kg of melatonin before ischemia and the control group.

알루미늄계 수처리 응집제 적용시의 부유물질 응집거동에 관한 연구

조경숙,김동수,이종목 이화여자대학교 환경문제연구소 1997 이화환경연구 Vol.1 No.-

A study has been conducted for the coagulation characteristics of suspended solids made up of kaolin using Al-based inorganic polymeric coagulants; PACS(Poly Aluminium Chloride silicate) and PASS (Poly Aluminium Silicate Sulfate). PACS was found to be superior to PASS in its coagulating ability almost two times as much. The variation of ζ-potential of suspended particles in the sign and magnitude was closely related to the turbidity removed behavior. For the application of two coagulant mixtures, the overall coagulating power was a function of the mixing ratio and, in case of sequential dosage of two coagulants, the entire coagulation feature was governed by the firstly dosed coagulant. When a same amount of coagulant was dosed in partition to the supernatant water of one time treated wastewater, the final turbidity of two time treated supernatant water showed a lower value compared with the case that all amount of coagulant was dosed at one time. The size of coagulum formed using PACS was larger than that using PASS and it was thought that the coagulum size was determined by the coagulating power of coagulant. Slow mixing time and rate were considered to be influential on the degree of turbidity removal, but not on the ζ-potential of particles. An appropriate temperature range was established for a better turbidity removal and beyond this range the turbidity increased as the temperature rised.

자발성 두개내 저압증(Spontaneous Intracranial Hypotension)의 임상적 분석

조규종,김원,최옥경,임경수 대한응급의학회 1999 대한응급의학회지 Vol.10 No.4

Backgrouds : Headache is one of the common symptoms complained by patients at the emergency department. Postural headache is the characteristic symptom that is aggravated at upright position and relieved at recumbent position. This postural headache is associated with low cerebrospinal fluid (CSF) pressure. Spontaneous intracranial hypotension(SIH) is an unusual syndrome of postural headache and low CSF pressure without a precipitating event. The diagnosis of SIH is confirmed by 60mmH2O or less CSF opening pressure on lumbar puncture. However, the cases of SIH with normal CSF opening pressure have been reported. so it is needed to complement the diagnostic criteria of SIH. Methods : A retrospective descriptive study with reviewing medical records of 10 patients who had been admitted at Asan Medical Center from Apr. 1995 to Jul. 1999 was done. Analyses were done of 22 variables of age, sex, clinical symptoms, spinal analysis findings, radiologic findings and therapeutic modality. Fisher's exact test and Mann-Whitney test were applied for statistical analysis (p-value < 0.05). Results ; 1. The male to female ratio was 3:7, and the mean age was 37.30±5.96 years. 2. Postural headache was characteristic symptom & complained by all patients. 3. The mean CSF pressure was 22.8±30.8 mmH2O. 4. Brain MRI demonstrated the pachymeningeal enhancement in all patients. 5. Radioisotope cisternography demonstrated slow ascent of tracer to the cerebral convexity in 88.9% patients, early soft tissue uptake suggestive of CSF leakage & rapid urinary accumulation of tracer in 66.7% patients, respectively. 6. 90.0% of all patients were recovered with autologous epidural blood patches, and 10.0% were recovered with conservative management. Conclusion : The SIH is an unusual syndrome. but we can diagnose the SIH in the patient, complains of a postural headache, if any following two or more criteria are present. 1. 60mmH2O or less CSF opening pressure on lumbar puncture. 2. Brain MRI finding : the pachymeningeal enhancement. 3. Cisternography findings : slow ascent of tracer to the cerebral convexity, early soft tissue uptake suggestive of CSF leakage & rapid urinary accumulation of tracer.

다변량해석기법을 활용한 치아 교모도에 의한 연령추정

곽경환,김종열 大韓法醫學會 1993 대한법의학회지 Vol.17 No.1

The use of physiologic changes of teeth is comparatively definite to estimate age for old people who had stoped the growth and development. among many physiological indicators, tooth attritions is visible to naked eye and does not need any damage of submect and has close relationship to age. The author examined tooth attritions and dental restorations of 229 subjects, and degrees of the attrition of all teeth was judged 5 categories according to the method by Takei. Multivariate analysis was applied for the Mathematico-Statistical means. The results were as follows : 1. Four calculators for age estimation by attrition value were given in case that 28 all teeth were used, and 14 maxillary teeth were used, and 14 mandibular teeth were used, and maxillary and mandibular 14 teeth were used. 2. Partial correlation coefficients of each tooth were calculated in order to show that which tooth is more contributive to age estimation. In case that the 28 all teeth were used, 2?? premolar was the most contributive to age estimation and 1?? molar, incisor, 2?? molar, lateral incisor, canine, 1?? premolar, respectively. 3. For more accurate age estimation, calculator by 28 teeth is recommendable to person who has comparatively more dental restoration, and calculator by maxillary and mandibular 14 teeth is recommendable to person who has less dental restoration and missing tooth.

매복된 하악 제2대구치 맹출유도의 치험례

한수경,김정욱,이상훈,김종철,한세현,장기택 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.1

정상적인 하악 성장에서, 하악 제1대구치 후방의 치배는 근심경사되어 있다. 보통 이러한 근심경사는 자발적으로 해소되나, 항상 그런 것만은 아니다. 첫 번째 증례는 14세 여아로서 가족이 모두 하악 제2대구치가 매복된 병력을 가지고 있었다. 환아 역시 양측 모두 매복되어 분절호선과 개방용 코일 스프링으로 치료하였다. 두 번째 증례는 14세 남아 환자로 Halterman 장치를 이용하여 매복된 하악 우측 제2대구치를 치료하였다. 세 번째 증례는 11세 남아로서 고정성 교정 치료 중, 하악 양측 제2대구치가 매복되었다. 분절호선과 개방용 코일 스프링 구리선으로 치료하였다. In the normal growth and development of the mandible, the molar tooth buds distal to the first permanent molar have a mesial inclination. This inclination is usually self-correcting, but, unfortunately this self-correction does not always occur. The first case is about, 14-year old female patient with familial history of lower second molar impaction. Hew lower second molars were both impacted, and she was treated with sectional wires and open-coil springs. The second case, 14-year-old male, we treated his impacted #47 with Halterman appliance. The third case, 11-year-old male, his both mandibular second molars were impacted during full-fixed orthodontic treatment. They were treated with brass wire sectional wire and open coil spring.