독일에서의 노동자 경영참가 제도와 관행 : 공동결정 제도를 중심으로

권기홍 嶺南大學校 産經硏究所 1994 産經硏究 Vol.2 No.-

Ⅰ. 서론: 독일식 노동자 경영참가 제도로서의 공동결정 제도 Ⅱ. 공장단위에서의 공동결정 Ⅲ. 기업단위에서의 공동결정 Ⅳ. 공동결정 제도가 노사관계와 국민경제에 미친 영향 Ⅴ. 논쟁점 및 전망

발생원별 산업폐기물의 물리화학적 특성

권기홍 경산대학교(대구한의과대학) 1998 環境硏究 Vol.3 No.1

This study was carried out to evaluate the quantity of industrial waste generated in Korea and the physico-chemical characteristics with generative dewatered sludges at wastewater treatment process of 6 different industry types. Sludge generation rate according to the industrial types was 2,148ton/yrear at chemical plant industry, 720ton/year at textile industry, 588ton/year at coke· petroleum industry and 480ton/year at 1st metal industry, respectively. Moisture of sudges were 81.5% in textile industry, 81.4% in frame metal industry, 80.7% in 1st metal industry, Volatile solid were 22.1% in hide · rubber industry, 21.9% in coke·petroleum industry. Fixed solid were 18.5% and 17.7% in the 1st metal industry and frame metal industry. High heating value by wet base were 1,850kca1/kg-wet waste in coke·petroleum industry, 1,220 kcal/kg-wet waste in hide·rubber industry, but the 1st metal industry and frame metal industry's sludge were impossible to incinerate because it was mostly inorganic sludge. In comparison with the Korean extraction limit, some of discharged sludge at hide·rubber. chemical, frame metal industry exceeded the limit and was classified as the specific waste. And in other industries it was lower than the limit.

병원폐기물중 폐합성수지류의 물성 및 세척·선별에 관한 기초연구 : 폐주사기와 폐수액세트를 중심으로

권기홍,성병주,박종웅 慶山大學校 環境시스템開發硏究所 1999 環境硏究 Vol.4 No.1

This research was carried out basic study to effective manage and develop washing-separator system for plastics in hospital wastes. The results are as follows : In 1995, the generation rate of plastics in hospital waste was 6,666ton in total amount of 11,195ton. Most of syringe was PP and the composition of drainage set was PP, PVC and ABS. Therefore, separation of syringe is better than that of drainage set. Pathoganic microbes in syringe was positive before sterilization process, but became negative after that process, Pollution of syringe-washing water was increased as washing times increased and optimum washing to obtain good pellet was 6 times. Separation efficiency differed with content of injected rubber in the manufactory process of syringe makers. Remaining rubber in pellet was completely removed by the final separator developed during the this project, so we obtained good PP pellet.

Lee Filtering에 대한 분석과 연구

權起弘 대구산업정보대학 1996 논문집 Vol.10 No.2

The purpose of this paper is to introduce for method of the restoration of an image degraded by White Gaussian noise. This method is Lee filtering, that presented used to local variance and local mean to preseving edge as adjusted to contrast of each pixel. Lee algorithm is advantaged of removed in flat well and preserving edge. but, edge area is disadvantaged of not removed noise well area of edge of this part represented origin of value pixel observed.

The SUSAN Filter Algorithm을 이용한 훼손영상복원

권기홍 대구산업정보대학 2000 논문집 Vol.14 No.2

The paper begins with an explanation of the SUSAN feature detection principle, and continues with details of the applications of it, including reviews of relevant past research and results of testing the applications. Because the research is based on fundamentally non-linear filtering, the approach to theoretical justification is necessarily different from that traditionally applied, for example, to "optimal" edge filtering.

물리 교육에서 TRIZ의 활용

권기홍 대전대학교 기초과학연구소 2002 自然科學 Vol.13 No.1

TRIZ는 창의성이 요구되는 문제의 해결에 관한 방법론이다. 트리즈의 관점에서 발명이란 당면한 문제에서 기술적 모순을 제거하는 것이다. 기술적 모순을 절충이 아니라 혁신적으로 해결하기 위해 다양한 물리 현상이 활용된다. 이와 관련된 여러가지 예를 들었다. 웹 상에서 제공되는 특허는 기술의 보고이다. 물리 법칙과 특허를 연관시킨 내용을 수업에 도입하여 학생들이 물리학에 흥미를 느끼도록 할 수 있다. TRIZ is the theory of inventive problem solving. TRIZ views the invention as removing of technical contradiction in the given problem. Various physical effects are used to solve the problem ingeniously. Trade-off is not recommended in this process. Several examples are described. The patent on the web is important source of technical informations. We can introduce physics and the related patents in class. In this way, students may feel interests in physics.

DS-FSK 통신 시스템에 대한 연구

權起弘,金龍顯 대구산업정보대학 1998 논문집 Vol.12 No.2

Recentlly, several experiments have been reported on utilization of commerical power distribution line for data transmission purpose in realizing local FA/HA system. The power line, originally having not been in stalled for the communication purpose, exhibits very poor transmission characteristics; high attenuation rate with severe selective fading, extremely low line impedance and persistent line noises ect.,usually deny the signal transmission unless cumbersome measures are taken, which cannot normally be allowed to local FA/HA system. This paper first studies general characteristics of local power distribution line and selects frequency band relatively recommendable for signal transmission. Also, described are the neccessity of applying spread spectrum technique in order to compete severe selective fading phenomenon existing in the line. The auther then introduces a highly reliable, verstile and yet simple data transmission system designed to meet above requirements. The system operates on the principle of meet DSSS technique but transmits two different carrier frequencies, instead of one depends on the polarity of the SS output. By applying the two carrier meth od, not only the problems related with the carrier synchronization may be eleiminated, but also the process gain of SS block in the system can be multiplied, by the effect of frequency hopping process of the carriers. Acording to the analysis, the simply constructed MODEN can transmits ASCⅡ data of upto 2400 bps through local power distribution line of -7 dB SNR with the error rate of lower than 10^(-5) when the 36 kHz PN frequency is used. The auther also studies the maxmum allowable numbers of the MODEN unit s multiplexed on a power line under given error rates. The analisis shows, with the proposed units, upto 8 subscribers may be cdmmunicate with the error rate of less than 10^(-4) In order to verify the analisis, 10 test sets have been built; each composed of a spreader/corelator, carrier modulator and a PN generator triggered from fixed phase of power line voltage. A carefully designed mathing transformer has been used in order to assure perfect matching to power line impedance which drops sometimes down to less than 10 ohms. Pairs of carrier frequeneies for each unit have been selected from 100-150 kHz band. For the standard pairs built for the unit system measur ements, 113 kHz and 137 KHz have been used. A series of measurements have been conducted on dummy line as well as on actual commercial lines with the results fairely matched to the analytical values.

CRT용 산화물 케소드에 관한 연구

權起弘 대구산업정보대학 1994 논문집 Vol.8 No.-

In the conventional oxide-coated cathode, saturated current density is usually limited to 2 A/㎠ approximately which is insufficient for the larger-size high-resolution CRT. In this paper, the author analyses the resistive effect of the interface layer using an electrical model of beam current circuit and explains how the current density can be increased by suppressing the accumulation of the layer. Through a series of experiments, the author has found that, by dispersing approximately 1% of scandium oxide into the conventional mixture of (Ba, Ca, Sr)CO₃ at coating process, followed by careful decomposition and activation, the accumulation of the layer can be successfully suppressed and satuation current incresed up to 4.51 A/㎠. The V-Ⅰ characteristics measured on the sample fairly matched with the results of theoretical analysis.

改善된 처리 方式에 의한 신호의 표현

권기홍,김남호 대구산업정보대학 1993 논문집 Vol.7 No.-

A new method is developed to restore the degraded images corrupted by the noise during the transmission, which is called MCSW(Modified contrast-sensitive weights) Filter method. The restored images by this method are compared with images processed by conventional ways, such as Average Filter, Median Filter, and CSW(Contrast-sensitive weights) Filter. The MCSW Filter divides pixels roughly into two groups by their variance, the one with lower variance and the other with higher variance, and processes each group with a different algorithm, then combines both results together. A computer VAX 11/750 has been used for the simulation. With the use of the MCSW Filter, the images of higher S/N ratio can be restored successfully, while restoring the images of lower S/N ratio needs the interation of processing more than 3 times. The restored images of lower S/N ratio processed by this mehtod show somewhat larger MSE(Mean square error) but are visually more natural than those processed by the Average Filter method. The simulation results using the MCSW Filter also show that the number of iteration can be reduced to obtain better picture quality in comparing with the other methods.

영상신호의 잡음제거에 대한 필터의 비교와 분석

權起弘 대구산업정보대학 1997 논문집 Vol.11 No.2

This paper restored the original image, by mean filter, median filter, NAGAO filter, LEE filter, and CSW filter after mixing GIRL.IMG with the white Gausian noise at 20dB, and characterized the results by the filterings, graphs and MSE results. Therefore, the results of restorering images were improved. This paper used the median filter in order to resolve the problems of mean filtering and improved the images. This paper introduced NAGAO, and CSW to restore detailed noises by using directional iterate filters, and used LEE filter for restoring closely the original images without priori-information.