영업주기의 변동과 기업가치생산성

남명수,신현관 한국생산성학회 2004 生産性論集 Vol.18 No.2

The purpose of this research is to verify the relationship between the changes of the operating cycle and the changes of the stock price in the firm. If the reduction of the operating cycle means a positive result of successful business reengineering of an enterprise whereas the increase in the operating cycle has an immense impact on stagnant sales and inefficient inventory management, a negative correlation is expected to exist between the operating cycle and the stock price. Following is a summary of this research ; First, the changes in operating cycle or the ratio of cash cycle and the stock price has a negative correlation. This finding is evident within industries of electronics, transportation equipment and machineries, but not so obvious in other industries. Secondly, the following findings are established for the operating cycle, cash generation capability, and the stock price ; ·As the capability of cash generation increases, the stock price increases. ·As the operation cycle extends, the stock price and the capability of cash generation decreases. Third, a negative correlation is found in the relationship among the raw material, work-in-progress, finished goods and account receivable collection and is maintained between the stock price and each respective factor. And finally, when the operating cycle is extended a negative correlation is found between the stock price and the operating cycle whereas when it is shortened such negative correlation is not found. This indicates only a negative impact on the operating cycle is relevant to the stock price.

낮은 Pr수를 갖는 순수 물질에서의 진동대류에 관한 수치 해석

현명택,홍남호,이동원 濟州大學校工科大學産業技術硏究所 1997 尖端技術硏究所論文集 Vol.8 No.1

Numerical study was investigated to the transient natural convection in a square cavity. The cavity is filled with the pure substance of a low Prandtl number and the vertical walls are constantly maintained different temperature, while the horizontal boundaries are adiabatic. A control volume approach with a central difference scheme is used to formulate the finite difference equations. The results were presented transient Nusselt number, stream function and temperature distribution. It was found that the flow pattern and heat transfer exhibit time-periodic oscillation at various conditions. The average Nusselt number, the amplitude and the frequency of oscillation increases as the Rayleigh number is increased. The increment of Prandtl number makes that the amplitude and the frequency of oscillation reduced, and average Nusselt number increased.

투명 경영제도와 재무적 성과

남명수,신현관 한국기업윤리학회 2003 企業倫理硏究 Vol.6 No.-

The corporate governance of our firms has the agency problem between major stockholders/management and majority stockholders. In order to solve this conflict, the government should take such special measures as the composition of out-sider-dominated boards or the adoption of cumulative voting and class-action suit provisions as the minimum devices to maintain the transparent and accountable management. But, before amendment or adoption of such provisions, the market information collected through the evidences of the previous studies should be fully considered. Outsider-dominated boards are likely to appoint outside CEO candidates when the firm faces a dramatic change in the business policies. The evidence from previous studies of stock price reactions to board decisions indicates that the market tends to view decisions by outsider-dominated boards more favorably than similar decisions by insider-dominated boards. The results of previous studies support that cumulative voting rights can increase firm value. In a derivative suit, possible manager-shareholder conflicts have increased the debate over the role of indemnification and directors' and officers' (D&O) liability insurance. The effect of D&O insurance on stock price is positive, but the broadening of indemnification has no significant effect on stock price. In a class action suit, if the rumor that shareholder will raise a lawsuit against a corporation is spread out in the market, the stock price will be dropped by about 30%. Because a class action suit adversely affects stock price, it should t allowed to shareholders in the direction to minimize its negative effects.

중학교 가정과 교수-학습 방법의 개선을 위한 집단탐구 수업모형의 적용연구

남현주,유태명 한국 가정과 교육 학회 1996 한국가정과교육학회지 Vol.8 No.2

This study was to develop and to suggest a lesson plan for the area of 'Human Development and Family Relationship' in home economics for junior high school, based on Thelen's'Group Investigation Model', Group investigation model by Thelen was developed from the theory that the education with special purpose such as societic knowledge is a method to lesson one's conflict. This study further developed from three main concepts : inquiry, knowledge and activities of learning group. This model can be used for any age and any subjects in order to solve the arised problems, rather than to accept pre-organized and pre-decided information. This study is organized around activities for seeking and practicing the rages of action to create dispersal home. First, one unit 'Understanding of Family' was chosen that concerns and suitable for group investigation model Second, From the chosen chapter and problem were analyzed organized. Third, the chosen problem were re-analyzed, then a model lesson for group investigation was proposed.

항갑상선제로 치료한 그레이브스병 환자의 관해예측인자

남일송,윤여일,김선규,김용현,이주영,목지오,윤석기,김철희,김영선,변동원,서교일,유명희 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2

Background: Most cases of Graves' disease have been treated by antithyroid drugs in Korea. The major drawbacks of antithyroid drugs are the relative high rate of relapse and the inconvinience of long term therapy. Measurement of TBII and TRH stimulation test have been considered as the most reliable tests predicting relapse, but the predictive power is not high enough to use in clinical situation. This study was performed to find good prognostic indicators in Graves' disease patients after the discontinuation of antithyroid drug therapy. Subjects and methods : We restrospectively evaluated 96 patients with Graves' disease who showed normal TRH test at the end of antithyroid drug therapy and were followed for more than one year. Serum T3, T4, T3/T4 ratio, TBII, Anti-TPO Ab and TGAb levels were measured at the time of diagnosis and at the end of therapy. Two to three months after withdrawal of antithyroid medication, serum TSH and free T3 responses to TRH were examined. These parameters were compared between the relapse group and the remission group. Results : Among the 96 patients, 22 patients(22.9%) relapsed(Group Ⅱ) and 74 patients(77.1%) remained in remmision(Group Ⅰ). No significant difference was observed between the relapse and the remission group in clinical parameters, serum T3, T4, TSH, T3/T4 ratio, TBⅡ and Anti-TPO Ab determined before and after treatment. Serum TSH and free T3 levels measured after TRH stimulation were also similar in both groups. Serum TGAb levels determined at the end of treatment were significantly higher in the remission group(p<0.05). Relapse following the discontinuation of therapy occured within 24 months in 72.7% of the relapsed cases. After 24 months, relapse rate was reduced significantly. Conclusion : These results suggest that high serum TGAb levels could be a favorable prognostic indicator for the long term remission of Graves' disease treated with antithyroid drugs, and may suggest that Hashimoto's thyroiditis is combined with Graves' disease in those patients.

癎疾에 대한 Diamox의 效果

南命錫,李奎恒,金顯東 大韓神經精神醫學會 1966 신경정신의학 Vol.5 No.1

The anticonvulsive effect of Diamox was observed on 35 epileptic patients consisted of 18 old ones and 17 fresh ones, from May, 1965 to Sep, 1965, at the Neuropsychiatric Department of Seoul National University Hospital and The 3rd Army Hospital. Among 35 epileptics 9 cases were symptomatic, others idiopathic and in the age of the initial onset 20 cases were from 10 to 19 years old of patient's age 9 cases from 20 to 29, 3 cases from 30 to 39, 3 case over 40. 29 cases of them were grandmal and other mixed in clinical type. The doses of medication was 1-2gm/day without any other anticonvulsants, during two months over. We devided the effectiveness into four groups, Good (80-100% improvement), Fair (50-80% improvement), Poor (0-50% improvement), Wore (increased in frequency). RESULTS: 1) We could observe the good response in 57.1% of patients. The more fresh revealed the better result. (TableⅠ) 2) No distinction between the idiopathic and the symptomatic could be found in response. (TableⅢ) 3) The case of the more frequent attack revealed the better response. (TableⅣ) 4) The side effects could be found in 88.3% of patients. Among them, paresthesia was most predominant symptom. (Table Ⅴ) No severe side effect was observed in all cases. We could control them with decrease of dosage or without any mangement, 5) Some problems remain: a) The clinical type and the degree of response. b) The evaluation of the child epilepsy. c) EEG pattern and degree of response. d) The biochemical study on the mechanism of action. We should like to perform above problems at another chance.

竊盜少年의 MMPI에 關한 硏究

盧明來,南光鉉 순천향대학교 1981 논문집 Vol.4 No.1

Study on the Korean Standard MMPI was performed on both the 1374 stealing boys who were institutionalized to the Seoul Juvenile Detention and Classification Center and the 317 normal high school boys sellected as control groups. These 1374 stealing delinquent boys were classified into 4 groups according to their nature of criminal acts, namely, 1) one delinquent boy's simple stealing group (600 subjects). 2) unlawful night entry stealing boy group (128 subjects). 3) more than two delinquent boy's specific stealing group (545 subjects) 4) habitual stealing group, more than 4 times stealing episode (101 subjects) . Emphasis was based on between the characteristics and differences of these 4 stealing del-inquent boy groups and the normal control groups. Especially the delinquent scale of simple stealing group and more than two boy's specific stealing group were extracted by the method of item analysis. The results were as follows: 1) Statistically significant higher score was obtained in nearly all clinical and validity scales except the Mf scale in the stealing groups compared with the normal control group 2) 19.56% of the normal control group. 36.83% of the simple stealing group, 27.34% of the unlawful night entry stealing group, 35.60% of the specific steeling group, 36.65% of the habitual stealing group revealed neurotic or psychotic traits. 3) The level of anxious state was higher in the stealing groups compared with normal group and, the highest anxious state was the unlawful night entry stealing group. ' 4) The internalization ratio was also higher in the stealing groups compared with the normal control group. This trait reveled that both group act out their anxiety and tension state to the outside, but the degree of acting out was lower in simple stealing group . 5) On item analysis, 74 delinqent scales in simple stealing group and 63 delinquent scales in specific stealing group were obtained.

스토커형 저공해 소각로 설계를 위한 비반응 유동해석에 관한 연구

전영남,오현명,김미환 조선대학교 환경공해연구소 2000 環境公害硏究 Vol.16 No.1

The numerical simulation of non-reactive turbulent model and cold flow experiment were carried out to propose the incinerator type for the domestic refuses and to investigate the design factor and operating conditions. The "standard stoker incinerator" proposed in this study was modified from central flow type with carrying out by material and numerical simulations repeatedly. The stoker has the characteristics of good mixing between refuse and hot combustion gas in primary combustion chamber and between unburned gas inflowing and secondary air jet in secondary chamber. Also there was no recirculation zone in secondary chamber so that mixing time was increased with higher residence time. Therefore this incinerator could be possible for domestic refuse to burn up with the low emission and high efficiency combustion. Parametric screening studies were achieved in standard stoker incinerator. The parameters are stoker type, secondary air inflow type, secondary air injection angles, secondary injection air flow rate and primary air inflow rate. The results are as follows; 1. In the same conditions with standard stoker incinerator, flow pattern was not almost changed by changing inclined stoker type. 2. The injection potion and angle of secondary air had an effect on flow field in secondary combustion chamber. 3. Flow pattern was not almost changed with the variation of the flow rate of primary and secondary air injection. The results of parametric studies said that the main factors for the design are the incinerator configuration of secondary combustion chamber and/or the position and angle of secondary air injection.

새로운 스위칭함수를 이용한 가변구조 위치제어기

박규남,송명현 순천대학교 공업기술연구소 1990 工業技術硏究所論文集 Vol.4 No.-

A control system of brushless dc machine position control based on Variable Structure System approach is presented. In order to simplify the overall control system and to improve the robustness of position controller, a new switching function which composed of linear combination of only measurable state variables Sr(x) and Sr(x) is defined. With this proposed method, good dynamic and steady state behaviors of the overall system are obtained without any external load torque observer. A general PWM amplifier is replaced by an ON―OFF pattern generator for digitalization and a digital signal processor(DSP) is used for high speed switching. Experimental results are given to demonstrate the validity of the proposed control method.

초피 용매 추출물의 항산화성 및 항균성에 관한 연구

안명수,원종숙,김현정,한미남 한국식생활문화학회 2004 韓國食生活文化學會誌 Vol.19 No.2

The antioxidative and antimicrobial activity were carried on the Chopi(Zanthoxy1um pippentum) extracts by six kinds of solvents in order to find out new natural food additives. Six solvents were used methano(MeOH), n-hexan(hexane), chloroform(CHCl_(3)), ethylacetate(EtOAc), buthano(BuOH), and water(water and methoanol extract(MEex), hexan extract(HEex), chloroform extract(CHex), ethylacetate extract(EAex), and buthanol extract(BUex), water extract(WAex). The antioxdative activities of them extracts were determined by peroxide value(POV), conjugated diene value(CDV) of corn germ oil storaged for 30 days at 60±2℃. These extracts were added as 0.02, 0.1, 0.2% of each extracts and compared with a-tocopherol, and BHT. The antioxidative activities of 0.02% extract were as follows in decreasing order BUex >WAex, BHT, MEex>HEex, EAex, CHex>TOC, and control. While, BUex and CHex among these extracts were shown to be had antimicrobial effects on the microorganism such as Escheria coli, Salmonella typhimurium, Psedomonas aeruginosa, Staphylococcus aureus, and Listeria monocytogenes. Finally to find out the preference of chopi we had made Yugwanzageon (a kind of shallow fried meat ball )by adding chopi powder. The result were similar to control( not added chopi powder ) in case of 0.1% chopi adding Yugwanzageon . (p<0.05) therefore it was thought to be possible that chopi powder was used Yugwanzageon preperation.