• The Journal of Korean Institute of Communications and Information Sciences
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• v.27 no.5C
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• pp.486-495
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• 2002

In this paper, we propose a delay reduction method for frame-based packet transmit scheduling algorithm. A high-speed network such as ATM network has to provide some performance guarantees such as bandwidth and delay bound. Framing strategy naturally guarantees bandwidth and enables simple rate-control while having the inherently bad delay characteristics. The proposed delay reduction method uses the same hierarchical frame structure as HRR (Hierarchical Round-Robin) but does not use the static priority scheme such as round-robin. Instead, we use a dynamic priority change scheme so that the delay unfairness between wide bandwidth connection and narrow bandwidth connection can be eliminated. That is, we use FIFO (First-In First-Out) concept to effectively reduce the occurrence of worst-case delay and to enhance delay distribution. We compare the performance for the proposed algorithm with that of HRR. The analytic and simulation results show that HFIFO inherits almost all merits of HRR with fairly better delay characteristics.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.3
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• pp.310-317
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• 1993

This paper presents a mechanism for improving performance of the IEEE 802.6 MAN(Metropolitan Area Network), a dual-bus structured high-speed communication network, by a more efficient use of bandwidth. The MAN protocol is able to handle various traffic and offers better transmission speed than the conventional LAN, but the unidirectional bus structure and propagation delay of request bits results in unfairness since higher nodes use more bandwidth. As the number of stations and the distances between them are increased, the problem becomes mere serious. As a solution, this paper presents a method that every station enables to identify the used slots, and that a specified class denoted 'erasure station' has with the functions of destination release, slot reuse. As a result, it is export to improve network bandwidth values of each station and the throughput and delay time was analytically analyzed, and it is shown that according to computer simulation results, this mechanism improves the network performance.

• Korea journal of population studies
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• v.24 no.2
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• pp.179-206
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• 2001

This study examines degree of fairness migrant workers in Korea feel with their wages in comparison to those of their homeland and Korean workers who do the same job in Korea as theirs, and what factors affect the feelings. For the study, 742 migrant workers from China, Vietnam, Philippines, and Indonesia employed by manufacturing firms in Seoul and Gyenggi areas were surveyed. The results show that most migrant workers in Korea feel unfair about their wages, and the feeling of unfairness appears more strongly when comparing with the Korean workers than with their homeland workers. The effectiveness of variables affecting fairness also varies according to the object of comparison: in comparison to homeland workers, age, sex, monthly income before migration, money spent for employment, and satisfaction with working conditions are significant: in comparison to Korean workers, ethnicity, sex, legal status, satisfaction with working conditions are significant.

• Journal of Arbitration Studies
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• v.19 no.2
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• pp.49-72
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• 2009

Korea Fair Trade Commission (KFTC), one of the Government agencies, has been preparing a standard model form of Exclusive Contract for Entertainment Management (hereinafter referred to as "Exclusive Contract") to eliminate some types of unfairness that placed entertainers at disadvantage such as forced PR activities or activities without payment, excessive privacy infringement, and exemption of payment after the termination of the exclusive contract. The said Exclusive Contract was drafted by The Korean Commercial Arbitration Board (the "KCAB") in association with the Korean Entertainment Law Society (the "KELS") and KCAB has persistently persuaded Corea Entertainment Management Association (the "CEMA"; mainly actors management) and Korea Entertainment Producers' Association (the "KEPA"; mainly singers management) to adopt the above-mentioned Exclusive Contract, respectively, and especially arbitration clause instead of litigation. After KCAB's tens of meetings and persuasion, they finally decided to accept KCAB's offer and they have submitted the Exclusive Contract drafted by KCAB and KELS to KFTC on April 17, 2009. The arbitration clause drafted by KCAB was already accepted by unfair contract examination division and unfair contract advisory committee and the final standard model contract was supposed to be publicly announced on June 30, 2009 after final examination of unfair contract standing committee, but the announcement has been delayed owing to severe controversies between the concerned parties, such as CEMA, KAU (Korea Artists' Union), KEPA and KSA (Korea Singers' Association) related to delicate issues like contract period and ownership of intellectual properties, etc. But it is expected the announcement will be made very soon by which the contract will include the originally drafted arbitration clause by KCAB. Therefore, it is very timely to examine the various legal issues which can be arisen out of disputes, and arbitration appropriateness with Exclusive Contract of Entertainment Management on this paper.

• Journal of the Korea Computer Industry Society
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• v.2 no.9
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• pp.1163-1174
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• 2001

A general goal of the ATM(Asynchronous Transfer Mode) network is to support connections across various networks. ABR service using EPRCA(Enhanced Proportional Rate Control Algorithm) switch controls traffics in ATM network. EPRCA switch, traffic control method uses variation of the ACR(Allowed Cell Rate) to enhance the utilization of the link bandwidth. However, in ABR(Available Bit Rate) service, different treatments are offered according to different RTTs(Round Trip Times) of connections. To improve the above unfairness, this paper presents ABR DELAY mechanism, in which three reference parameters for cell delay are defined, and reflect on the messages of RM(Resource Management) cells. To evaluate our mechanism, we compare the fairness among TCP connections between ABR DELAY mechanism and ABR RRM mechanism. And also we execute simulations on a simple ATM network model where six TCP connections and a background traffic with different RTTs share the bandwidth of a bottleneck link. The simulation results, based on TCP goodput and efficiency, clearly show that ABR DELAY mechanism improves the fairness among TCP connections.

• The Journal of the Korea Contents Association
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• v.20 no.2
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• pp.226-239
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• 2020

The study seeks to present ways to form and express political opinions while monitoring, regulating and critically accepting the production and distribution of false information and platforms, which are spread channels, through the participation of citizens. First, it logically identified the unfairness of legal regulations on false information. In other words, it is often practically impossible to judge whether false information is false or not, and even false information can sometimes fall within the category of freedom of expression protection. It also revealed that voluntary regulation by platform operators was limited. As an alternative, it was theoretically clear whether civil society should participate in the maintenance and development of democratic public debate sites and create social discourse. The specific method is to find and classify false information and share it with citizens to raise awareness. Second, it forms an autonomous cooperative system with platform operators and others. Third, develop critical media capacity of citizens. Fourth, it responds to producers and platform operators of false information while engaging in community activities as a direct practitioner.

• Journal of Korean Academy of Nursing
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• v.42 no.4
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• pp.496-507
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• 2012

Purpose: This study was based on social-role theory, and purposes were to investigate (1) how depression and health determinants vary with married and employed women, and (2) what factors contribute to depression according to family cycle. Methods: A stratified convenience sample of 765 married and employed women was recruited during May to August 2010. Study variables of depression, socio-demographic threatening factors, psycho-stimulating factors, and social-role related factors were measured via a structured questionnaire. Results: Prevalence rate for depression was 18.6%, with highest rate (25.4%) from elementary laborers. Greater levels of depression were related to women's occupation, higher life stress, and poorer health; lower social support and vulnerable personality; higher levels of social-role related stress. From multivariate analysis, women with preadolescents were the most vulnerable to depression affected by occupation, life stress, personality, and parenting stress. These factors (except for occupational class) combined with economic status, social support, and housework unfairness were significant for depression in women with adolescents. Conclusion: Depression among married and employed women differs by psycho-stimulating and social role relevant factors in addition to occupational class and family life cycle. Female elementary laborers and women with children need to have the highest prioritization for community mental health programs.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.6B
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• pp.605-614
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• 2009

Existing Internet services were almost supported by the best effort service such as the data transmission service and were allowed the transmission delay and packet loss. However, recent Internet multimedia services such as Internet phone, Internet broadcasting are required a real-time processing and high bandwidth. Therefore, many studies for providing Internet QoS are performed at IETF (Internet Engineering Task Force). As the buffer management mechanism among IP QoS methods, active queue management method such as RED (Random Early Detection) algorithm has proposed. However, RED algorithm has a limitation of usage of an average buffer length and unfairness. So, many algorithms proposed as the modified algorithm of RED. But these modified algorithms also have difficulties to satisfy the requirements of various Internet user QoS. Therefore, in this paper we propose the QoS adaptive AQM (Active Queue Management) algorithm for the multimedia services that request various QoS requirements and present a performance evaluation by the simulations using the ns-2.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.6B
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• pp.553-558
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• 2009

There have been various research efforts to support the fairness between uplink and downlink of TCP streams in IEEE 802.11 networks. Existing methods, which have been effective for the fairness, however could not provide the solution for the unfairness caused by the situation in which a station which is having multiple TCP uplink streams monopolizes the uplink bandwidth. This paper proposes a method that AP allocates token buckets for each uplink TCP station. The proposed method is also able to support the fairness between the uplink and downlink. To remedy the underutilization which may happen under token bucket-based schemes, it allows the movement of redundant tokens among the token buckets. By controlling the token movements, it can balance the fairness and the utilization. Simulation results show that the proposed method is able to support the fairness of the TCP uplink stations, as well as the fairness between the uplink and downlink.

• Journal of the Korean association of regional geographers
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• v.23 no.1
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• pp.47-61
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• 2017

Recently global society has been interested in the alleviation of poverty in the developing countries. Fair trade has gotten lots of attention as the new way to release the poor situation of the developing countries through the favored trade deal. This research endeavored to reveal the problems of fair trade in the context of the subalternity of producers in the developing countries. Fair trade as a social movement has been carried out under the principle of fairness with the partnership between developed and developing countries, pursuing on the sustainable development of the developing countries. However, it has been revealed that fair trade is not the right way to overcome the poverty of developing countries. The main reason for the unfairness of fair trade was due to the developed countries led programs which are very similar to aid programs, thus this study suggests the necessity of producer-led development program as a practical performance of the producers in the developing countries for fair trade. For this development, this research put emphasis on the perceptual transition for development, renewed understanding of market value, development as freedom, and the importance of individuality for local development in the context of postdevelopment.