火傷을 입은 흰쥐의 赤血球 壽命

金完泰 명지대학교 1968 明大論文集 Vol.2 No.-

Dept of food technology and Nutrition, Myong-ji College The rates of disappearance of Cr^51 tagged erythrocytes were measured in rats with a 20% body area scald. Radio-actvites were decreased exponentally with time showing straight lines on the Semi-logarhythmic paper. On the basis of SA of Cr^51 VS time curve, half survival time(t½) were calculated in normal and scald group in normal rats (6 rats), mean half survival time was 5.4 days and 2.1 day's in the scald rats consisted nine rats, Mechanisms of decrease in mean half survival time in the scald rats were briefly discussed.

OFDM 시스템에서 PAPR의 감소와 대역 내 왜곡 보정에 관한 연구

김완태,유선용,조성준,Kim, Wan-Tae,Yoo, Sun-Yong,Cho, Sung-Jun 한국정보통신학회 2008 한국정보통신학회논문지 Vol.12 No.5

OFDM (Orthogonal Frequency Division Multiplexing) system is robust to frequency selective fading and narrowband interference in high-speed data communications. However, an OFDM signal consists of a number of independently modulated subcarriers, which can give a large PAPR (Peak-to-Average Power Ratio) when added up coherently. In this paper, we apply clipping and filtering to solve the PAPR problem and compensate the inband compensation using calculated EVM (Error Vector Magnitude). The proposed method can reduce the PAPR and inband distortion. From the results, we analyze the PAPR reducing efficiency and EVM, BER performance of proposed algorithm in the wireless communication system. OFDM (Orthogonal Frequency Division Multiplexing) 방식은 주파수 선택적 페이딩 (frequency selective fading)과 협대역 간섭 (narrwband interference)에 강한 전송 방식으로 대용량 데이터 통신에 적합하다. 하지만, OFDM 신호는 독립적으로 변조된 많은 부반송들로 구성되므로 이들이 동위상으로 더해질 때 신호의 진폭이 증가하여 PAPR(Peak-to-Average Power Ratio) 문제가 발생한다. 본 논문에서는 OFDM 시스템의 PAPR 문제를 해결하기 위해 반복구조의 clipping과 filtering 기법을 적용하고, 이로 인해 발생되는 대역 내 왜곡을 EVM (Error Vector Magnitude)을 이용하여 보정하는 기법을 제안하였다. 이 기법은 PAPR 감소는 물론 clipping에 의한 대역 내 왜곡을 감소시킬 수 있다. 제안하는 알고리즘을 무선 통신 시스템에 적용하였을 때 PAPR 감소 효율과 EVM, BER (Bit Error Rate) 성능을 시뮬레이션을 통해 분석했다.

방사선안전 - 규제 현황과 전망

김완태 대한방사선방어학회 2015 대한방사선방어학회 학술발표회 논문요약집 Vol.2015 No.04

萬頃江流域에 있어서 井水中의 弗素含量에 관한 硏究

金完泰,安榮根,申和雨,張賢淑 원광대학교 식품약품안전성연구소 1987 食品藥品安全性硏究 Vol.1 No.-

This study is the survey about Fluorine contents in the well water of area of Mankyung River side and water of Mankyung River. The result of this survey is as followings: The water of well in this area contained 0.5∼1.3ppm and it's average value was about 0.8 ppm. The water from Mankyung River contained 0.8∼0.9ppm and it's average value is 0.87ppm. By the regionally sectional survey the well water of the area of Mankyung River side, the well water of Chun-Ju, Iri, Samye, and Kusan contained 0.5∼0.8ppm, but the well water of Baikku area contained 0.6∼1.3ppm. Especially in Baikku area 63% of well contained 0.6∼1.0ppm and 38% of well contained 1.1∼1.3ppm. From the above results one can conclude that the 38% of well water of the Baikku area is troubled one.

알콜 음료의 이뇨작용에 대한 일 고찰

金完泰 명지대학교 자연과학연구소 1990 자연과학논문집 Vol.8 No.-

Experiments were performed to elucidate some aspects of the diuretic effect showed by alcoholic beverages. Fifteen healthy male students in the early twentieth were divided into three groups and induced the changes in the volume and the osmolar concentration of the extracellular fluid. The first group (water group) ingested 100ml of water ; the second one (Soju group) ingested 160ml of Soju(containing 25% of ethyl alcohol), Korean distilled spirits ; the third one (beer group) ingested 1000ml of beer (containing 4% of srhanol). Urine was collected every 30 minutes. Urinary, osmolartity and the excretion of sodium chloride were measured. And blood was sampled to measure blood alcohol level in Soju and beer groups. The results were obtained as followings : 1) The water group showed that the urinary flow begins to increase sithin 30 minutes and reached its peak at 30 minutes after he ingestion of water. The total volume excreted flow volume. And the condition of body fluid was suggested to recover to the normal control state sithin three hours. 2) The Sohu group showed that the urinary flow begins to increase as rapid as one in the water group and reached its peak at 90 minutes after the start of the experiment. The total volume excreted for three hours exceeded about 80ml over the sum of the ingested amount(160ml) and the control urinary flow (126ml). It was infered that the body fluid of this group showed the relative dehydration after the three hour experiment. And it was suggested but could never be concluded that the phenomena be due to the effect of some additives which were excreted slowly. 3) The beer group showed the very strong diuretic phenomena and eventual mild dehydration phenomena, which were suggested to be both the effect of alcohol itself in beer and the action of water contained in beer. 4) From the above results, it may be concluded that the diuretic effects of alcoholic beverages be due to some additives and water component in berverages as well as alcohol itself.

萬頃江 流城 井水中의 弗素含量 調査 硏究

金完泰 圓光大學校大學院 1979 學位論叢 Vol.2 No.-

This study is the survey about Florine contents in the well water of area of Man Kyung River side and water of Man Kyung River. The result of this survey is as followings : The water of well around this area contained 0.5-1.3 P. P. M. and it's average value is about 0.8P. P. M. The water from Man Kyung River contained 0.8-0.9 P. P. M. and it's average value is 0.87 P. P. M. By the regionally sectional survey the well water of the area of Man Kyung River side, the well water of Chun-Ju, Iri, Sam- Ye, and Kun-San contained 0.5-0.8 P. P. M. but the well water of Baik-Ku area contained 0.6-1.3 P. P. M. Especially in Baik-Ku area 63% of well contained 0.6-1.0 P. P. M. and 38% of well contained 1.1-1.3 P. P. M. From the above result one can conclude that the 38% of well water of the Baik-Ku area is troubled one.

Electron microscopy analysis of soft materials with freeze-fracture techniques

김완태,윤동기 대한화학회 2023 Bulletin of the Korean Chemical Society Vol.44 No.2

Electron microscopy (EM) is a technique that observes the complexmicrostructure of a sample with a resolution of several Å using high-energyelectrons with a short wavelength. It is very effective for visualizing nanostruc-tures that would not be observed with an optical microscope. However, thereare limitations in that the observation must be carried out with a very thin filmin a vacuum, and the electron beam may damage the samples. The samplemay be out of the desired state or damaged, and the image may be distorted.As a solution to these problems, a freeze-fracture technique can be proposed.Freeze-fracture method is a process of rapidly freezing a sample and then frac-turing it to produce a metal replica of the morphology of the bulk of the sur-face. This article includes an overview and principles of freeze-fracturetechniques and examples of analysis of various soft structures

윗몸일으키기가 불가한 요통 환자에 대한 흉쇄유돌근과 요근의 반응성 근육조절 치료 방법의 적용에 관한 실험

김완태,Kim, Wan-Tae 대한물리치료과학회 2006 대한물리치료과학회지 Vol.13 No.1

Purpose: The purpose of this experimental study have been testifying about reactive muscle control regarding sternocleidomastoid and psoas. Low back pain patient do not sit-up exercise without abnormality of trunk flexor. The reason of problem is unbalance sternocleidomastoid and psoas. According to George J, Goodheart who have been developing Applied Kinesiology (A. K.) since reactive muscle recognized gait testing in 1964. Materials and Methods: From September, 2004 to February, 2005, I have controled sternocleidomastoid and psoas. It is applied to the patients who are unable sit up exercise at Yang-Dong local clinic, Yang-Pyung county, Kyung-Gi Do province in Korea. 24 Patients divided 2 groups. A group is applied general physical therapy. Also B group is added reactive muscle control from M.E.M.P.T.(Korean society of muscle and energy monitoring physical therapy) Results : The results of this study follow. 1. Possible sit up group 8 persons of the second group. 2. Not possible sit up group the others. Conclusion: The study present that reactive muscle control sternocliedomastoid and psoas is useful in patient with low back pain is difficult to sit up.

M68020C CROSS COMPILER SYSTEM의 3B20S에의 이식 ( Porting of M68020C Cross Compiler System Onto 3B20S Computer )

김완태,정상현,최영철,유근호,여재홍 대한전자공학회 1988 대한전자공학회 학술대회 Vol.1988 No.7

스마트 자동차의 BSD 검지를 위한 추적알고리즘에 관한 연구

김완태 (사)디지털산업정보학회 2023 디지털산업정보학회논문지 Vol.19 No.2

Recently, Sensor technologies are emerging to prevent traffic accidents and support safe driving in complex environments where human perception may be limited. The UWS is a technology that uses an ultrasonic sensor to detect objects at short distances. While it has the advantage of being simple to use, it also has the disadvantage of having a limited detection distance. The LDWS, on the other hand, is a technology that uses front image processing to detect lane departure and ensure the safety of the driving path. However, it may not be sufficient for determining the driving environment around the vehicle. To overcome these limitations, a system that utilizes FMCW radar is being used. The BSD radar system using FMCW continuously emits signals while driving, and the emitted signals bounce off nearby objects and return to the radar. The key technologies involved in designing the BSD radar system are tracking algorithms for detecting the surrounding situation of the vehicle. This paper presents a tracking algorithm for designing a BSD radar system, while explaining the principles of FMCW radar technology and signal types. Additionally, this paper presents the target tracking procedure and target filter to design an accurate tracking system and performance is verified through simulation.