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朴哲淳,申石澈 충남대학교 의과대학 지역사회의학연구소 1984 충남의대잡지 Vol.11 No.1
This study was attempted to investigate systemically the effects of lithium(Li) cn the renal function and to evaluate the mechanism of its action. After the cannulation of carotid artery, jugular vein, and ureters were prepared for the recording of blood pressure, the infusion of yarious drugs, and the collection of urine respectively. Physiological saline was infused to hydrate the rabbit, and the mixed saline solution of para aminohippuric acid and inulin (PAH-IN solution) was infused to determine the glomerular filtration rate(GFR) and the renal plasma flow RPF). During the infusion of LiCl solution (0. 2 mEg/kg/hr) after Li loading (2 mEq/kg), 2% NaCI solution or 0. 3 M sucrose solution was infused with PAH-IN solution. And concentration of IN and PAH were measured by the method of Smith and the method of Schreiner, concentration of each ion(K, Na, and Li) by flamephotometer, and osmolar concentration by osmometer, respectively. Plasma clearances of various substances were calculated from the urine volume and the measured data. The results were summarized as follow: 1. By the lithium loading, the GFR and RPF were decreased, and the urinary excretion rates of Na^+ , K^+, and osmolar substances were increased. But the water diuretic effect was observed as a result of the reduced negative free water clearance. 2. By the infusion of 0.3M, sucrose solution, the concentration of Na^+ and Li^+ in plasma and urine were more lowered than those of the infusion of 2% NaCl solution, and plasma clearances of K^+ and Li^+ were higher than those of 2% NaCl. 3. Urinary excretion rate of osmolar substance was increased by the infusion of NaCl solution or sucrose solution, but excretion rate of Na^+ by sucrose infusion and excretion rate of K^+ by NaCI infusion were decreased, respectively. 4. Relation coefficient between the urinary excretion rates of Na^+ and Li^+ was significant, and excretion of Li^+ by sucrose infusion was higher than that of the NaCl infusion at the same excretion rate of Na^+, From the above results, it was suggested that the decrease of GFR by Li^+ infusion was due to the reduced RPF and the activity of Li^+ may be inhibited by the action of sucrose.
생활과학교실 미래형 융합인재교육(STEAM) 프로그램 사례 연구 : 나는야, 황포돛배 뱃사공
박철순,권난주 경인교육대학교 과학교육연구소 2012 과학교육논총 Vol.25 No.-
The aim of this study was to act as development process about “I am a boatman of the Hwangpodotbae” on STEAM-centered special program and panel exhibits of living science classroom for '2012 Science & Creativity Festival'. This program was total of 5 classes including field experience learning and this program was also mainly composed of STEAM programs that students naturally experienced and learned science principles by making the Hwangpodotbae which was used in 'Joseon Dynasty', dyeing cloth with ocher and floating what they made on the water by themselves. We expect that this study is helpful for developing various STEAM education programs that can make elementary school students have more dreams of being scientists, explorers, sailor, shipbuilding engineers, ect.
Fast Automatic Modulation Classification by MDC and kNNC
박철순,양종원,나선필,장원,Park, Cheol-Sun,Yang, Jong-Won,Nah, Sun-Phil,Jang, Won The Korea Institute of Military Science and Techno 2007 한국군사과학기술학회지 Vol.10 No.4
This paper discusses the fast modulation classifiers capable of classifying both analog and digital modulation signals in wireless communications applications. A total of 7 statistical signal features are extracted and used to classify 9 modulated signals. In this paper, we investigate the performance of the two types of fast modulation classifiers (i.e. 2 nearest neighbor classifiers and 2 minimum distance classifiers) and compare the performance of these classifiers with that of the state of the art for the existing classification methods such as SVM Classifier. Computer simulations indicate good performance on an AWGN channel, even at low signal-to-noise ratios, in case of minimum distance classifiers (MDC for short) and k nearest neighbor classifiers (kNNC for short). Besides a good performance, these type classifiers are considered as ideal candidate to adapt real-time software radio because of their fast modulation classification capability.
Map과 GPS 기반의 혼적을 고려한 물류할당 및 모니터링 시스템
박철순,랄손 바즈라차리야 한국산업경영시스템학회 2018 한국산업경영시스템학회지 Vol.41 No.4
In the field of optimization, many studies have been performed on various types of Vehicle Routing Problem (VRP) for a long time. A variety of models have been derived to extend the basic VRP model, to consider multiple truck terminal, multiple pickup and delivery, and time windows characteristics. A lot of research has been performed to find better solutions in a reasonable time for these models with heuristic approaches. In this paper, by considering realtime traffic characteristics in Map Navigation environment, we proposed a method to manage realistic optimal path allocation for the logistics trucks and cargoes, which are dispersed, in order to realize the realistic cargo mixing allowance and time constraint enforcement which were required as the most important points for an online logistics brokerage service company. Then we developed a prototype system that can support above functionality together with delivery status monitoring on Map Navigation environment. First, through Map Navigation system, we derived information such as navigation-based travel time required for logistics allocation scheduling based on multiple terminal multiple pickup and delivery models with time constraints. Especially, the travel time can be actually obtained by using the Map Navigation system by reflecting the road situation and traffic. Second, we made a mathematical model for optimal path allocation using the derived information, and solved it using an optimization solver. Third, we constructed the prototype system to provide the proposed method together with realtime logistics monitoring by arranging the allocation results in the Map Navigation environment.
朴哲淳 대한신경정신의학회 1981 신경정신의학 Vol.20 No.2
In order to study pessimism in depressive neurotics, the author used the Beck’s Hopelessness Scale for measuring the hopelessness. The author selected 19 to 37 years old 180 normal subjects and 420 patients (depressive neurosis, anxiety neurosis, and (dermatoses) from April, 1978 to March, 1979. The results were as follows: 1. The hopelessness score was highest in depressive neurotics group followed by anxiety neurotics, dermatoses, and normal control group, in that order. 2. The hopelessness score was not different between sex groups in normal and patient groups. 3. There is no significant difference of hopelessness score between depressive neurotics and anxiety neurotics group. 4. The scores of “Feelings about Future” , “Loss of Motivation”, and “Future Expectation” were significantly higher in depressive neurotics and anxiety neurotics groups than in dermatoses and normal control groups, and there was no significant difference between depressive neurotics and anxiety neurotics group.