• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1998.11a
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• pp.329-334
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• 1998

난연성을 지닌 고분자 물질중 Chlorosulfonated Polyethylene(CSPE; Hypalon)은 Polyethylene에 염소와 황을 첨가한 것으로 염소를 첨가함으로써 기름과 화염에 대한 저항성을 향상시키고, 황 또한 기름, 화염에 대한 저항을 향상시킬 뿐 아니라 인장강도를 크게 해서 기계적 강도를 향상시킨 것이다. CSPE는 염소량의 등급에 따라 Coating재료, 호스 구조재, Wire와 Cable의 피복재료등 여러 가지 용도로 많이 쓰이고 있으며 특히 염소함량이 35%인 CSPE(Hypalon-40)의 경우 열저항과 압출 특성이 우수하기 때문에 Cable의 피복재료로 많이 쓰이고 있다.

• Korean journal of communication and information
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• v.84
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• pp.7-27
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• 2017

This study explores the possibility of maximizing locality through synergy between local terrestrial broadcasters and cable local channels. To this end, it examines the significance of the concept of locality in the changing environment represented by the 4th Industrial Revolution. It also analyzes the existing situation of broadcasting locality and the terrain of existing studies concerning cable local channels. Based on the reviews, the study searches for the connection points between local terrestrial and cable channels, which are still heterogeneous operators. The difference in the size of broadcast region and the programming time constitutes the optimum condition. As a result of this, the study discusses the issue of appropriateness and feasibility of bundling the local terrestrial and pay-TV channels in the same legal system. By doing so, it reveals the biggest obstacle in institutionalizing the cable channel into the public category is the emotional rejection towards cable TV. In order to overcome this problem, the study suggests to abolish both the current policy guideline characterized as the same service, same regulation principle and the abolition of local business right of cable TV. It also proposes to allow news commentary function of cable local channels and strengthen cable TV's own capabilities.

• 한국경영정보학회:학술대회논문집
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• 2008.06a
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• pp.909-920
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• 2008

기술이 급속도로 발전하고 과거 자연 독점을 이루고 있던 많은 서비스 산업의 규제가 완화되면서 경쟁이 더욱 치열해지고 있다 기존 기업들은 신규 시장 진입 기업들을 방해하기 위하여 진입장벽을 높이기도 하고 기존의 인프라를 이용하여 더욱 뛰어난 기술력을 선보이기 위하여 노력한다 하지만 대부분의 서비스 기업들의 경우 이동통신 산업처럼 새로운 서비스가 시장에 진입하게 되면 많은 사람들의 관심이 늘어나고 이로 인해 기존 서비스가 시장에서 퇴출되는 둥의 어려움도 가지고 있다. 또한 독과점 형태를 이루고 있던 기업들은 시장 진입 기업에 대해 방심하고 있다. 갑작스러운 경쟁 체제에 미숙한 대응 방안으로 인하여 더욱 어려움을 겪기도 한다 반면에, 소비자의 경우 신규 서비스 초반 많은 관심을 가지고 이용 서비스를 신규 서비스로 옮기기도 하지만 서비스 품절, 이용용이성, 유용성에 의하여 지속적으로 이용하기도 하고 다시 기존 서비스를 이용하기도 한다. 따라서 경쟁 체제에서의 시장 환경에서 고객 만족도를 높여 결과적으로 고객 충성도를 높이는 전략은 기존 기업뿐만 아니라, 신규 진출 기업에게도 매우 중요한 과제가 되고 있다. 최근 유료방송시장의 기술이 발전하고 IPTV라는 새로운 서비스가 출시됨에 따라 기존의 Cable TV 는 시장 점유율이 잠식당하고 있다 IPTV 의 유료방송 시장으로의 진출로 인해 Cable TV 의 많은 가입자들이 IPTV 로 이용서비스를 옮기는 것을 방지하기 위하여 고객 만족을 높여 결과적으로 고객 의 충성도를 높여 기존 고객의 이탈을 방지하기 위한 전략이 필요하다. 유료방송서비스 외에도 많은 서비스 산업 내에서 경쟁이 치열해지면서 기존 기업들이 고객의 이 탈을 방지하기 위하여 고객 만족도를 높이는 방안에 대한 연구가 필요하다 본 연구에서는 유료방송 시장을 분석하여 서비스 산업에서 고객만족을 높이기 위한 방안에 대하여 연구해보고자 한다. 기존 연구의 서비스 품절, 이용용이성, 유용성에 대한 연구를 기초로 하여 고객 성향, 신규 서비스의 효용성이라는 변수를 추가하여 분석한 결과 고객 성향 및 신규 서비스의 효용성이라는 변수도 역시 고객 만족도와 고객 충성도에 많은 영향을 주는 것으로 나타났다.

• Electronics and Telecommunications Trends
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• v.15 no.4 s.64
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• pp.52-63
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• 2000

현재 국내 초고속인터넷서비스 시장은 기존통신사업자들의 업역 확대와 신규사업자들의 진입에 따라 초경쟁(hyper-competition)상황에 놓여 있다. 이에 본 고에서는 국내 초고속인터넷서비스 시장의 주요 제품으로 등장하고 있는 ADSL 및 Cable Modem 기술을 이용한 서비스의 시장 경쟁상황을 Porter의 산업구조분석 모형(5-force model)의 측면에서 개괄하고, 현재 사업을 전개하고 있는 각 사업자의 서비스 제공 내용 및 가격 현황을 제시한 후 이들의 가격 및 판촉전략 비교를 통해 향후 사업자들이 취할 수 있는 전략방향을 제시하고자 하였다.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.17 no.4
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• pp.119-125
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• 2008

A new type of swivel unit is suggested in order to complement weak points of the existing. This new type of Swivel unit is developed by adopting a spring type cable which has elasticity and restoring force. To minimize the troubles in the process of manufacturing during operating the new type system, strength analysis and the check of interference between parts are accomplished with CATIA. The check of rotating performance is also carried out to determine the diameter and length of spring type cable by SimDesigner motion analysis. Swivel unit used in the robot spot welding is developed with spring type cable and its usefulness in the industrial field is verified through experiments. This system has been registered for patent.

• Fashion & Textile Research Journal
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• v.20 no.5
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• pp.616-620
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• 2018

Recently, many researches have been conducted to improve the performance and wearability of smart wearables. In this study, we designed and fabricated the signal and power transmission textile cables for smart wearables which have excellent wearability, durability and reliability. For the signal transmission textile cables, conductive yarns for the signal line and the ground line were developed. Three types of signal transmission textile cables have been developed using the conductive yarns. Linear density, tensile properties, electrical resistance and RF characteristics were tested to characterize the physical and electrical properties of three signal transmission textile cables. The conductive yarns have the very low resistance of $0.05{\Omega}/cm$ and showed excellent uniformity of electric resistance. Therefore, the electrical resistance of the signal transmission fiber cable can be reduced by increasing the number of conductive yarns used in signal and ground lines. However, the radio frequency (RF) characteristics of the signal transmission textile cables were better as the number of strands of the conductive yarns used was smaller. This is because the smaller the number of strands of conductive yarn used in signal transmission textile cables, the narrower and more parallel the distance between the signal line and the ground line. It is expected that the signal and power transmission textile cable for signal and power transmission will be utilized in smart wearable products.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.4
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• pp.205-211
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• 2014

With a development of modern industry, demand for electric power is rapidly increasing and the capacity of power transfer is required to become bigger and bigger. At power station, the high-voltage power cable is used as the only method in order to transfer electric power. In this paper, we have analyzed the deterioration characteristics of 6.6kV power cable systems in operation. For the time duration of 2000 days, we have measured the cable in operation in order to extract the data for the deterioration characteristics. By analyzing the data by means of several steps of filtering processes, we could obtain the linear relations of insulation resistances as a function of time. Furthermore, we can verify that the progress characteristics in deterioration process of 6.6kV power cable systems follows the process of heat deterioration.

• Journal of the Korea Computer Industry Society
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• v.7 no.1
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• pp.33-38
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• 2006

The motions of suspension bridge as well as hanging cable are governed by nonlinear partial differential equations. Nonlinearity gives rise to a large amplitude oscillation. We use finite difference methods to compute periodic solutions to the torsional partial differential equations. We use the one-noded forcing term and a slight perturbation in the forcing term.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.35 no.3
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• pp.95-102
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• 2012

It is not easy to establish the correct standard time and standard manhour in a process of small quantity batch production system, especially in a case of irregular quantity of production. Therefore, how to establish rational standard time about manufacturing process of a power cable company which is representative business for small quantity batch production system will be suggested in this paper. Furthermore, how to establish standard manhour which can be used for effective control of labor productivity will also be presented.

• Journal of Industrial Technology
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• v.30 no.A
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• pp.75-81
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• 2010

We described the operating principles of two different type of igniters for lightning of Ceramic Metal Halide Lamp(CMHL) and also provide some useful comparisons. One is for magnetic ballast, the other one is for electronic ballast which operates lamp by low-frequency square-waveform. Ignition voltage of lamp depends on the structure of igniter, such as the length and electrical characteristics of cable, which make troubles for ignition in real sites. Therefore, we measured and analyzed ignition voltages from igniters which are used in magnetic and electronic ballast in cables at a distance of 5 meters between a lamp and a igniter to suggests an applicable solution in real sites.