• The Korean Journal of Air & Space Law and Policy
• /
• v.19 no.2
• /
• pp.137-162
• /
• 2004

Generally the aircraft accident caused a great loss of lives, severe property damages including aircraft's total loss and thus, affect enormous emotional and economic damages to the public. We, therefore, should try every efforts to prevent the re-occurrence of aircraft accident by examining the cause of accident closely and discovering it through aircraft accident investigation. Though the object of an accident investigation is not to apportion blame but to discover a cause or causes of an accident to prevent future accidents, the cause of an accident would play a vital role in determining the liability of the carrier, legal relationship with the third party and jurisdiction, etc. in the aviation litigation. Therefore, it is very important that aircraft accident investigation are carried out by a professional and independent agency. Also, it needs for us to be careful in applying investigation results in the courts not to be deterrent to discovering the cause of accident. Korea now has the Aviation Accident Investigation Agency Board under the Korean Ministry of Construction and Transportation, but unfortunately it is often pointed out that it lacks professionalism and independency due to the bureaucratism of the Government. We, therefore, should establish a professional and independent aircraft accident investigation agency like United States' NTSB and reflect the issues mentioned-above on the new Act.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.12
• /
• pp.26-33
• /
• 2016

The cost of preparing munitions in weapon system operation and management has been rapidly increasing and current weapon systems have become complicated and diverse due to new warfare pattern changes and the rapid growth of advanced scientific technology. Moreover, as a part of the execution plans of creative economics, the Korean government is actively reviewing how to minimize the costs of preparing munitions. Accordingly, this study derived the issues of munitions management for decreasing munitions preparing costs. First, the issues of munitions management were introduced through review and analysis with respect to the munitions classification criteria, regulations and systems, and equipment maintenance information systems. Second, we proposed the application and necessity for the real-name system which is responsible for munitions management and the fragmentation of the maintenance instructions status classification criteria.. Also, we were analyzed that the effects depending on the application. Finally, we proposed that the linkage system which is currently military active with equipment maintenance information systems as well as the total life-cycle management system (TLCSM) improvements to the itemized data and records management system by utilizing IT technology CMB that must be done in order to improve the issues.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• v.11 no.5
• /
• pp.623-629
• /
• 2018

Smart Factory is a concept of automatic production system of machines by the fusion of ICT and manufacturing. As a base technology for realizing such a smart factory, there is an increasing interest in a low-power environmentally friendly LED lighting system, and researches on so-called optical ID related application technologies such as communication using a LED and position recognition are actively underway. In this paper, We have proposed a system that can reliably identify logistics location and additional information without being affected by electromagnetic interference such as high voltage, high current, and generator in the plant. Through the basic experiment, we confirmed the applicability of the color ID recognition rate from 98.8% to 93.8% according to the eight color variations in the short distance.

• Journal of the Korea Society of Computer and Information
• /
• v.15 no.9
• /
• pp.57-65
• /
• 2010

This paper describes the method of efficient container number recognition in colored container image with number plate at ATC(Automatic Transfer Crane) in container terminal yard. At the Sinseondae terminal gate in Busan, the container number recognition system is installed by "intelligent port-logistics system technology development", that is government research and development project. It is the method that it sets up the tunnel structure inside camera on the gate and it recognizes the container number in order to recognize the export container cargo automatically. However, as the automation equipment is introduced to the container terminal and the unmanned of a task is gradually accomplished, the container number recognition system for the confirmation of the object of work is required at ATC in container terminal yard. Therefore, the container number recognition system fitted for it is necessary for ATC in container terminal yard in which there are many intrusive of the character recognition through image including a sunlight, rain, snow, shadow, and etc. unlike the gate. In this paper, hardware components of the camera, illumination, and sensor lamp were altered and software elements of an algorithm were changed. that is, the difference of the brightness of the surrounding environment, and etc. were regulated for recognize a container number. Through this, a shadow problem, and etc. that it is thickly below hung with the sunlight or the cargo equipment were solved and the recognition time was shortened and the recognition rate was raised.

• The Korean Journal of Vision Science
• /
• v.20 no.4
• /
• pp.403-411
• /
• 2018

Purpose : The purpose of this study is to analyze how the certain efforts of the optical shops affect on opticians' job satisfaction and organizational commitment, and to analyze how opticians' job satisfaction and organizational commitment affect on the customer orientation and to suggest the method of maintaining competitiveness. Methods : Two hundred opticians took participations on the surveys via the Internet survey method and social network system (SNS), and SPSS 18.0 statistics program was used for data analysis; frequency analysis, T-test, factor analysis, reliability analysis, and multiple linear regression analysis were conducted. Results : It is analyzed the differences on the job satisfaction and organizational commitment in accordance with type of optical shops, conducting 5 working days/week and flexible time. As a result, higher job satisfaction is presented with 5 working days/week. Relationships with co-workers statistically affect on job satisfaction positively and emotional labor and work overload statistically affect on job satisfaction negatively. In addition, relationships with co-workers and reward statistically affect on organizational commitment positively and emotional labor and work overload statistically affect on organizational commitment negatively. And opticians' job satisfaction and organizational commitment statistically affect on customer satisfaction positively. Conclusion : It is necessary for the optical shops to make an effort for their opticians to improve the job satisfaction and organizational commitment. And to do so, it is needed to form trusting and respecting relationships with co-workers or superiors. In addition, it is necessary to have continuous communication and education for opticians' self-management. Also, it is needed to establish an effective reward system.

• The Korean Journal of Air & Space Law and Policy
• /
• v.17
• /
• pp.29-54
• /
• 2003

The objectives of this study are to develop more practical and efficient model concerned with airport charge, especially with aircraft landing charge. This study utilizes average pricing and marginal pricing theory as well as cost accounting theory. The average pricing method is useful to make total costs recovery possible in uncongested situation where the marginal costs are too low to recover the total costs of service. The utilization of cost accounting theory with marginal cost pricing theory would improve the practical applicability of the model. In addition, it is necessary to apply cost accounting information in order to estimate more exact cost for the service of landing and take-off of each aircraft type.

• Journal of Information Technology Applications and Management
• /
• v.19 no.1
• /
• pp.37-46
• /
• 2012

The scheduling problem of large products like ships, airplanes, space shuttles, assembled constructions, and automobiles is very complex in nature. To reduce inherent computational complexity, we often design scheduling systems that the original problem is decomposed into small sub-problems, which are scheduled independently and integrated into the original one. Moreover, the steep growth of communication technology and logistics makes it possible to produce a lot of multi-nation corporation by which products are produced across more than one plant. Therefore vertical and lateral coordination among decomposed scheduling systems is necessary. In this research, we suggest an agent-based coordinating mechanism for multi-level scheduling systems in supply chain. For design of a general coordination mechanism, at first, we propose a grammar to define individual scheduling agents which are responsible to their own plants, and a meta-level coordination agent which is engaged to supervise individual scheduling agents. Second, we suggest scheduling agent communication protocols for each scheduling agent topology which is classified according to the system architecture, existence of coordinator, and direction of coordination. We also suggest a scheduling agent communication language which consists of three layers : Agent Communication Layer, Scheduling Coordination Layer, Industry-specific Layer. Finally, in order to improve the efficiency of communication among scheduling agents we suggest a rough capacity coordination model which supports to monitor participating agents and analyze the status of them. With this coordination mechanism, we can easily model coordination processes of multiple scheduling systems. In the future, we will apply this mechanism to shipbuilding domain and develop a prototype system which consists of a dock-scheduling agent, four assembly-plant-scheduling agents, and a meta-level coordination agent. A series of experiment using the real-world data will be performed to examine this mechanism.

• Journal of the Korean Society for Railway
• /
• v.15 no.4
• /
• pp.388-393
• /
• 2012

Recently, various attempts are made to increase the efficiency of railway freight transport including bulk cement, the most important transport item of railway transport market. The major seven cement companies have started common use of private bulk cement car since April 2008 for the efficiency of railway freight transport. At that time, major seven cement companies owned 75% of whole bulk cement car. Railway companies forecasted that this project will decrease the amount of cost and transport time of freight car. With these data, it analyzed the effectiveness of the joint use of freight car on actual used data.

• Journal of the Korean Society for Railway
• /
• v.15 no.4
• /
• pp.334-342
• /
• 2012

It is connected with various gauges existing in Euro-Asian continents. Such differences impedes the operation seriously as on the contact of railway tracks of different gauge the cargo must be either transshipped or the running assemblies of rail vehicles must be exchanged. Those operations are costly, time-consuming and require extended infrastructure together with very expensive storage and transshipment facilities at border-crossing point. Moreover, those operations extend transportation time considerably. Therefore, effectiveness of railway transportation systems significantly depends on track gauge change 1435/1520mm, which connects with complicated handling-shifting operations. The paper concerns assessment of effectiveness in strategical rail systems with gauge changing. The paper presents short description of transport system with gauge changing and initial assessment of shifting technologies. Method of system assessment comparison based on Life Cycle Cost model is described here as well.

• Journal of the Korean Society for Railway
• /
• v.15 no.4
• /
• pp.394-401
• /
• 2012

Railway has been used as a transportation method since 18th century. Modern term of railway is defined as use of steam engine. Stockton & Darlington Railway in north western England firstly used steam engine. It was Manchester & Liverpool Railway which firstly ran systematized railroading system. Like this, railway had been developed in diverse forms in various countries, and these traditions are preserved well as time passes. Especially in UK, first country to run railway, has various methods to maintain railway cultural heritage. Japan also has organized railway culture protection system due to fast development of railway and many changes through privatization. In this research, railway cultural preservation systems of UK and Japan's are compated and lessons are looked for Korea. This paper chooses comparative and contrast method, and introduces laws, systems, and examples of two countries to find lessons.