원문 : 좌업 시간과 알코올 섭취가 30대 남자 사무직 근로자의 혈압과 혈관탄성에 미치는 영향

조봉오 ( Bong Oh Cho ),이인녕 ( In Yeong Lee ),정균근 ( Gyun Geun Jeong ),장창현 ( Chang Hyun Jang ) 한국운동생리학회(구 한국운동과학회) 2014 운동과학 Vol.23 No.3

조봉오, 이인녕, 정균근, 장창현. 좌업 시간과 알코올 섭취가 30대 남자 사무직 근로자의 혈압과 혈관탄성에 미치는 영향. 운동과학, 제23권 3호, 241-248, 2014. 본 연구의 목적은 일과 중 대부분을 좌업근무 형태로 업무를 수행하고, 스트레스로 인해 음주가 잦고, 운동이 부족한 30대 남자 사무직 음주자 15명을 대상으로 좌업 시간과 알코올 섭취가 혈압과 혈관탄성에 미치는 영향을 분석하여 사무직 근로자에게 건강관리에 필요한 정보를 제공하는데 있다. S대학 운동 생리학 실험실에서 사전 인적 사항과 설문을 작성하고, 신장, 체중, 채혈, 혈압, 혈관탄성, BMI를 측정하였다. 알코올 섭취 횟수, 섭취량, 좌업 시간, 그리고 음주 섭취 전과 후 및 시간대별 (10분, 40분, 60분) 혈압과 혈관탄성의 변화를 측정 분석한 결과를 요약하면 다음과 같다. 1) 평균 좌업시간이 9.87시간, 음주횟수 및 음주량은 월 평균 9.13회와 12.47잔 이였다. 2) 알코올 섭취횟수 및 섭취량에 따른 BMI, TC, LDL-C, HDL-C, 혈압과 혈관탄성 비교에서 알코올 섭취횟수에서 좌상지 혈관탄성은 통계적으로 유의한 차이를 나타냈다(p<.05). 3) 알코올 섭취 전, 후 비교 분석 결과 우상지와 좌상지의 혈관탄성에서 통계적으로 유의한 차이가 나타났다(p<.05). 4) 알코올 섭취 후 시간대별 우상지 혈관탄성은 통계적으로 유의한 차이를 나타냈다(p<.05). 이상의 결과를 종합해 볼 때, 좌업 시간이 혈압과 혈관탄성에 미치는 영향은 통계적으로 유의하게 나타나지 않았고, 알코올 섭취는 혈관탄성에 통계적으로 유의한 차이를 나타냄을 알 수 있었다. 따라서 이는 직장생활의 스트레스를 음주로 해소하는 경향이 있음을 보여주며 건강에 부정적인 영향을 주고 있음을 알 수 있었다. 또한, 신체가 음주에 적응되어 실험 시 섭취한 적은 양(1/2병)은 1회 12.47잔에 비해 혈압과 혈관탄성에 큰 영향을 미치지 못한 것으로 사료된다. Cho, Bong-Oh, Lee, In-Yeong, Jeong, Gyun-Geun, Jang, Chang-Hyun. Effects of Sedentary Occupation Time and Alcohol Intake on Blood Pressure and Vascular Compliance in 30s Male White-Collar Workers. Exercise Science, 23(3): 241-248. 2014. The purpose of this study was to examine effects of duration of sedentary office work and alcohol intake on blood pressure and vascular compliance in male subjects who were office workers aged between 30 to 39 and frequently drink alcoholic beverages to cope with their stress without exercising for health. The study was to provide health-related information necessary for white-collar workers. We collected data of demographic information, height, weight, blood sample, blood pressure, vascular compliance, and BMI from 15 subjects in S University`s Exercise Physiology Laboratory, and analyzed the frequency and amount of alcohol intake, duration of sedentary work, and changes in blood pressure and vascular compliance at diffident time points (10, 40, and 60 minutes post drinking) from baseline. I t was found that the average time of sedentary work was 9.87 hours, drinking 9.13 times a month on average, 12.47 glasses of alcohol beverages per drink. In comparison of BMI, TC, LDL-C, HDL-C, blood pressure and vascular compliance upon the frequency and amount of alcohol intake, the upper left limb`s vascular compliance had a statistically significant difference (p<.05). In the result of the comparative analysis of pre-and post-drinking, vascular compliance was significantly different in the upper right and left limbs (p<.05). Vascular compliance in the upper right limb after drinking significantly changed (p<.05). As a result, the duration of sedentary work had no statistically significant difference in blood pressure and vascular compliance. T he vascular compliance after drinking h ad a statistically significant difference. This suggested that the result was an index that shows the trend of the office workers releasing their work stress by drinking alcoholic beverages, and that drinking had negative impacts on them. In addition, a small amount of intake (a half bottle) at the test time, after the body was adjusted to drinking, compared with 12.47 glasses per intake, had no great impacts on blood pressure and vascular compliance.

칩입차단시스템의 안전성 강화

이봉근,김상도 永同大學校 2000 硏究論叢 Vol.6 No.1

침입차단시스템은 전산망 환경에서 통신상의 대부분의 위협 요인들을 제거할 수 있다고 알려져 있지만 내적으로는 아직 해결되지 못한 문제들도 있다. 본 논문에서는 침입차단시스템의 한계성을 분석하고 이러한 단점을 극복하기 위하여 정보보호 기능을 활용한 안전성 강화 방법을 제시하고자 한다. A firewall is known as something which eliminates most of the risk factors in computer network but there are some problems to solve internaly. In this paper, we will analyze the limits of a firewall and propose enforcing methods of the security to assist such defects by enforcing the function of computer network security.

인증기관의 신뢰성 강화를 위한 인증서 발급

이봉근,윤성일,육상조 공주영상정보대학 1999 논문집 Vol.6 No.-

인터넷을 이용하여 안전한 전자상거래가 성립되기 위해서는 거래 주체간의 신원확인을 위한 상호 인증 기능과 거래내역을 부인하지 못하도록 하는 기능을 하는 전자서명 기능이 요구된다. 전자서명은 서명인 인증, 메시지 인증, 부인 봉쇄 등의 기능을 가지고 있으나, 서명인에 대한 본인 증명의 역할은 어렵다. 따라서, 본인 증명을 할 수 있는 제 3자의 역할이 중요하며 이러한 기능을 수행하는 인증기관의 인증 서비스의 제공은 필수적이다. 본 논문에서는 인증 서비스를 제공하는 인증기관에서 인증서 발급시 인증서 확장영역에 인증기관 발급자의 개인키 서명을 추가함으로써 인증서 발급시 인증기관의 신뢰성을 증가시키는 방안을 제시하였다.

근저항 트레이닝이 20대 여성의 신체조성과 체력에 미치는 영향

이상우,김봉환,서해근,강신범,나재철 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.1

The purpose of this study was to investigate the effect of muscular resistance training on the body composition and the physical fitness. The subjects of study were 6 women in their twenties who had not taken will in ordinary days and had not gone through regular training. The above subjects were measured by body composition and physical fitness pre and post 8 weeks training. The frequence training was more than 4 times a week and the duration of training of each session was 70 miniutes. The results are as fallows: 1. In muscular resistance training for 8 weeks, % Fat 1.8%(7.76%), and Fat weigh 3.0kg(23.43%), wee decreased, while LBM 3.0kg(7.10%) was increased, However, there was no differences. 2. In muscular resistance training for 8 weeks, it was exposed to be increased a little in Left arm strength 2.65kg(9.60%), Fight arm strength 2.03kg(7.78%), Left leg extention strength 12.47kg(6.16%), Right leg extention strength 4.50kg(2.35%), Left leg flextion strength 13.67kg(13.01%), Right leg flextion strength 13.25kg(12.70%), Standing trunk flextion 3.25㎝(18.16%), Front split 2.67㎝(1.65%), Side step 3.83friq(11.16%), Vital capacity 5.02cc(0.22%).

유전적 알고리즘을 이용한 인공신경망의 구조 설계

이재식,차봉근 한국경영과학회 1999 韓國經營科學會誌 Vol.24 No.3

Artificial Neural Networks(ANN) have been successfully applied to various kinds of business and engineering problems, especially those involved in pattern classification. However, because of the lack of design standard or guidelines, the structure of specific ANN depends on the designer's own experiments or choice. In other words, even though we could construct a better ANN, we often settled down with just a satisfactory ANN. The purpose of this research is to apply the Genetic Algorithm(GA) to design a structure of ANN that yields better performance compared to the existing test results. For a bankruptcy prediction problem, an existing research using ANN which consists of 22 input processing elements(PEs) for financial ratios and 5 hidden PEs showed 70% hit ratio in our research, the input financial ratios and the number of hidden PEs are determined by GA. The best ANN, which consists of 8 input PEs and 6 hidden PEs, shows 78.03% ht ratio. In addition, we compare the performance of two types of reproduction schemes, ie, generational reproduction and steady-state reproduction.

상완골 간부 골절 불유합의 금속판과 자가골 이식에 의한 치료 결과

이광현,이성필,김형종,이봉근,김주학 대한골절학회 2004 대한골절학회지 Vol.17 No.2

廢 乾電池로 부터 有價金屬의 循環利用

李成植,金種和,姜奉根,梁種奎 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.1

The recovery and recycling of the rare metal from spent batteries have been investigated. It was proposed the synthetic processes of recovery of rare metal from various spent batteries, and spent batteries have to be considered as a resource and the collection system with separation should be established.

플라보노이드의 세포 신호전달 조절

이응룡,강근호,강용진,김우열,최혜연,김봉우,정효순,조쌍구 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

Many studies revealed the neuroprotective, cardioprotective, and chemopreventive actions of dietary flavonoids. The plausible mechanistic interpretation of the various effects of flavonoids was concentrated on the anti-oxidant or free radical-scavenging properties of these phytochernicals, both in model systems and under in vivo conditions. While there has been a major focus on the anti-oxidant properties. there is an emerging view that flavonoids and their in vivo metabolites. do not act as conventional hydrogen-donating anti-oxidants. but they may exert regulatory functions in cells through actions at protein kinase or lipid kinase signaling pathways. Flavonoids and more recently their metabolites. have been reported to act at phosphoinositide 3-kinase(PI 3-kinase). Akt/protein kinase B(Akt/PKB), protein kinase C (PKC), mitogen activated protein kinase(MAP kinase), and various tyrosine kinases signaling cascades. Inhibitory or stimulatory actions at these pathways are likely to affect cellular function profoundly by altering the phosphorylation state of target molecules and by modulating gene expression. A clear understanding of the mechanisms of action of flavonoids, either as anti-oxidants or modulators of cellular signaling pathways, and the influence of their metabolism on these properties are key to the evaluation of these potent biomolecules as anti-cancer agents, cardio-protectants, and inhibitors of neurodegeneration.

Mg(OH)₂를 이용한 습식탈황에서 폐슬러리 처리특성연구

김근범,이은덕,박영성,임봉수 大田大學校 環境問題硏究所 1998 환경문제연구소 논문집 Vol.3 No.-

Properties analyses and treatment characteristics of waste slurry discharged in the wetted flue gas desulfurization process using Mg(OH)₂as a absorbent were investigated. Aeration and coagulation test were carried out to evaluate variation of some factors such as COD, SS, T-N, etc. related to waste slurry treatment. The hydraulic retention time(HRT) and coagulant dosage rate were applied as operating variables in experiment. As experimental results, the reduction effects of COD, SS in aeration test were distinct, due to oxidation of SO₃ and floc, formation of suspended solids. It was also found that the reduction efficiencies of SS and T-P in coagulation test are higher than 90%.

효율적인 소규모 네트워크 구축

안봉근,이병수,정현식 한국경영과학회 1995 經營 科學 Vol.12 No.3

Information sharing and automated office in the use of PC necessitate corporate network to implement business innovation. Building an efficient network requires competent knowledge on capabilities of various LAN technologies, hardwares and softwares that have rapidly improved in terms of efficiency and cost. This paper compares capabilities of network components: communication protocol, hardware, network operation system, low cost database software and mid-range priced SQL for application development. Also this study presents a new technology on virtual LAN and a selection guide among the various options of the network components which are suitable for PC-based small-sized network in balance of efficiency with economy. In the last section of this paper, a case of small-sized network is given for illustration.