• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.2
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• pp.385-390
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• 2017

Owing to the development of IT technology, a computerized system in various ways such as a variety of company's businesses, factory automation system and hospital healthcare system is introduced and operated. And it is possible to say that a computer system is more important than anything else to the extent that all businesses are suspended in case the system is down. Attention should be always paid to environmental management such as temperature, humidity and fire in server room for the normal operation of system in this situation. It is thought that there is necessity for a low-cost system which independently monitors environment round the clock in the situation where the person in charge doesn't pay attention and which informs a person in charge in real time when an event occurs for the operation of this small server room. Consequently, it is to be hoped that the suspension of service provided by computer system, which may occur due to a specific event, can be prevented.

• Journal of the Korea Convergence Society
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• v.8 no.8
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• pp.89-94
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• 2017

This paper implements a web - based production monitoring system that can be used efficiently by small - scale manufacturers. Small-scale enterprises, especially small-sized enterprises with less than 5 employees, need an efficient production management system because productivity is important. However, in reality, the manager and the worker verbally report work orders and production, and when one of the members is absent, the delay in the work process increases. If the time required for the work process increases, the productivity will be affected and the sales of the enterprise will be affected. In this paper, we have designed and implemented a web - based production monitoring system that can be used efficiently by small - sized manufacturers with less than 5 employees. We implemented a web based browser to operate with only a browser and applied the UI for convenience of the field worker. The proposed system is applied to less than 5 automobile parts manufacturers and the system effectiveness is confirmed. The system can be economically applied to more small enterprises with only a few modifications according to the products of each company.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.8A
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• pp.1115-1123
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• 2000

Most of the existing web caches are used in huge organizations. But many internet users belong to small organizations such as a venture company or a PC room. Users are in general in multiple window environments, and use several programs concurrently with rapid preference change within a relatively short period of time. We develop a network-path based algorithm. It organizes a cache according to the network paths of the requested URLs and builds a network cache farm where caches are logically connected with each other and each cache has its own preference over certain network paths. The algorithm has been implemented and tested in a real site. The performance results show that the new algorithm outperforms the existing algorithms in the hit ratio and response time dramatically with low cost.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.3
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• pp.731-740
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• 2015

In the recent days, interests in machine-to-machine communication schemes in small-scale networks has been increasing with growing demands. TDMA(Time Division Multiple Access) can be used as a multiple access method in small-scale networks. However, time synchronization for TDMA is complicated or needs additional equipments. Such a large cost is not suitable for small-scale networks. We propose, BC-DESYNC, a efficient time synchronization for small-scale networks by extending DESYNC(DESYNChronization). DESYNC takes a long time to complete synchronization and doesn't guarantee the synchronization delay. BC-DESYNC uses CU(Central Unit) that performs a centralized control to achieve the 2-hop communication and guarantees the synchronization completion time by using Mimic firing and C-DESYNC scheme.

• Journal of Wetlands Research
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• v.13 no.2
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• pp.199-208
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• 2011

Scarcity of water worldwide, increasing greenhouse gas emissions, increased energy consumption due to the Earth is threatened. Existing in the process of urban planning and development of forests, rivers and other natural ecosystems have been destroyed and that there was increased impervious pavement. Impervious pavement increase water circulation system to destroy the natural and urban water retention, infiltration and decreased evaporation. Nonpoint source pollution(NPS) occurs when rainfall impervious pavement and appeal directly to the river water inflow is adversely impacts of the situation. In this study, rainfall occurs impervious pavement NPS pollution reduction and temperature increase due to the increase in urban areas, and to solve heat island phenomenon is to develop small HSSF constructed wetland technology. The small HSSF constructed wetland sedimentation, filtration, adsorption, absorption by vegetation, including such mechanisms. Techniques for verification of the pilot-scale test was conducted. In the future domestic urban heat island phenomenon and restore the natural water cycle for the facilities will be used as a basis to develop.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.12 no.5
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• pp.451-465
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• 1987

With the introduction of ISDN network, the D channel protocol has bee defined as a signalling method for ISDN user-network interface. Therefore the NT2(Network Termination 2) which carry out concentration and switching function, must process the D channel related information. This paper describes how the D channel protocoal is applied and implented in a small ISDN subscriber concentrating system that has NT2 functions. The application protocol proposed is addressed taking into consideration the compatibility with ISDN standard facilities, TE(Terminal Equipment) or ET(Exchange Terminator), This protocol has been implementes using a general multitask operating system and it has the features of the minimized information processing and the simpified algorithm which are suitable for a small system. Its application programs are divided into various tasks to facilitate the addition and the modification of function. In this paper, we briefly outline the protocol defined in CCITT and show the application protocol that has fitted in a small concentrating system with NT2 functions. Also we present the experimental results and implementation method of this protocol.

• Journal of Convergence for Information Technology
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• v.11 no.7
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• pp.84-90
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• 2021

98.8% of accidents occurring in domestic companies are concentrated in small-sized workplaces with fewer than 50 employees. Therefore, this study developed a disaster safety program that can be implemented by small and medium-sized enterprises by comparing and analyzing the safety management system actively used with the laws and regulations related to industrial safety and facilities. The disaster and safety program included the scope of application, organizational structure, risk assessment, emergency response system, education and training, safety equipment provision and program evaluation, and detailed preparation methods and procedures for each item. In addition, items to be aware of when operating a disaster safety program and operational strategies were presented. After that, it was proposed to introduce the research results into the Occupational Safety and Health Act.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.59-66
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• 2019

Small bridges carry out only general inspections based on visual inspection. The Bridges with more than 30 years of public use need to be decided on whether or not they will be reconstruction according to aging. However, there are some situations that need to be determined only by appearance condition, which is insufficient in terms of safety maintenance. In this paper, the condition evaluation and the load carrying capacity evaluation were carried out for aged small bridges. A comparison of the evaluation results was conducted to examine the appropriateness of the maintenance related to the decision making of the reconstruction. As a result of reviewing, two of the bridges showed that there are no abnormality in the safety of the state evaluation, but the load capacity were insufficient. Thus evaluation the safety and performing the reconstruction decision of aged small bridges by visual inspection alone with may cause problems. Therefore, it is necessary to carry out additional research on the ambient measurement and load carrying capacity evaluation for the maintenance of the bridges, and to supplement it through application of the bridge management system.

• The Journal of the Korea Contents Association
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• v.22 no.6
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• pp.92-103
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• 2022

This study was designed to explore the ways to improve the organization and implementation of the curriculum for the small rural middle schools. In order to do this, the situations and demands in organizing and operating the curriculum were analyzed through interviews and classroom observations. Having separated the country into 5 distinct regions and the cases of 10 small rural middle schools across these regions of the country were directly observed and analyzed. As a result of the study, it was necessary to prepare a fundamental solution to the following problems: 1) insufficient linkage between school levels of integrated operating schools in terms of curriculum, 2) lack of educational facilities and cultural space in rural areas in terms of local communities, and 3) supply and demand of teachers in small-scale middle schools in rural areas in terms of supply and demand of teachers. Based on the discussed issues, the following implications could be drawn for the improvement and support of school curriculum organization and implementation. Firstly, the autonomy in organizing and operating curriculums for small rural middle schools should be greatly expanded so that integrated schools or joint curriculums between schools can be operated in a robust manner. Secondly, it needs to strengthen the out-of-school support for small rural middle schools alongside local governments and local communities, including the operation of Edu buses and the construction of multipurpose educational and cultural centers. Finally, it is necessary to address the difficulties of operating circuit teachers by systematically expanding the pool of teachers and instructors, and managing teachers and instructors at the level of the local education office.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.10a
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• pp.511-512
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• 2012