• Journal of Korea Game Society
• /
• v.8 no.4
• /
• pp.3-16
• /
• 2008

This study tried to look into various linguistic elements of MMORPG and suggested teaching methods to be applied in teaching and learning English. To support this idea, diverse attributes of CALL applications were investigated and suggested suitable position of MMORPG in technological stream of CALL. After that, focusing on 'Goonzu Global', the linguistic environment of MMORPG was considered. Based on aforementioned results, this study proposed an effective method to utilize MMORPG in teaching English adopting three teaching methods; collaborative method, task-based learning and problem-based learning.

• The Journal of the Korea Contents Association
• /
• v.8 no.4
• /
• pp.197-210
• /
• 2008

In this paper, I show the factors which have an effect on the emotional exhaustion and turnover intention in call center workers who perform emotional labor using telephone without direct confronting with clients. I empirically show that emotional exhaustion decreases job satisfaction and increases turnover intention. Therefore the emotional exhaustion is the important managing factor for efficient management of call center. To weaken emotional exhaustion, it is necessary to decrease time pressure in call center work. To weaken turnover intention, it is important to strengthen superior support. This study makes a contribution in providing the fact that emotional exhaustion is an important managing factor in administration of call center worker.

• Journal of the Ergonomics Society of Korea
• /
• v.36 no.3
• /
• pp.197-211
• /
• 2017

Objective: We propose to apply color information to facilitate finding books in the library. Background: Currently, books are classified in the basis of a decimal classification system and a call number in the library. Users find a book using the call number. However, this classification system causes various difficulties. Method: In a process analysis and survey study, we identify what the real problem is and where the problem is occurred. To solve the real problems, we derived a new search method using color information. We conducted a comparative experiment with 48 participants to see whether the new method can show higher performance. Results: The new method using color information showed faster time and higher subjective rating scores than current call number method. Also, the new method showed faster time regardless of the skill level while the call number method showed time differences in terms of the skill level. Conclusion: The effectiveness of the proposed method was verified by experiments. Users will be able to find the desired book without difficulty. This method can improve the quality of service and satisfaction of library use. Application: Our book search method can be applied as a book search tool in a real public library. We hope that the method can provide higher satisfaction to users.

• Journal of Sensor Science and Technology
• /
• v.20 no.3
• /
• pp.199-206
• /
• 2011

Sell call radio buoy is mostly used for searching for the location of fishing nets. Sell call radio buoy for the detection of the code uses the band pass filter(BPF). All BPF is used by imported from Japanese companies. But, Japanese companies stopped selling buoys for searching for the location of fishing nets, and domestic manufacturing companies could not sell buoys any more. Therefore, In this paper, a new method to replace the conventional buoy code detector is proposed. The proposed methods are constructed with an analog filter division composed of BPFs and notch filters as well as a microprocessor with analog digital converters. The advantage of proposed methods is able to combine various codes, can enhance receiver sensitivity. The experimental results confirm the usefulness of the proposed method.

• 전자공학회논문지 IE
• /
• v.45 no.3
• /
• pp.50-55
• /
• 2008

In CDMA system, the number of mobile stations which can be served simultaneously in a base station is limited by the amount of total interference received. Considering the facts, the call admission control method using the effective bandwidth concept is employed in this paper. The bandwidth for a new call and a handoff call is allocated by considering the number of mobile station being served and dynamically assigned by taking account of the blocking rate of new calls and the dropping rate of handoff calls. Also, there is reserved resource for handoff call. We analyze the performance of system according to reserved resource by a simulation study. The more a resource reserved, the less it is the dropping rate of handoff.

• The Journal of the Acoustical Society of Korea
• /
• v.17 no.4E
• /
• pp.28-34
• /
• 1998

In most switching system, the processing unit is designed to work efficiently even at relatively high loads, but when the offered traffic exceeds a particular level, the rate of completed calls can fall drastically. A single call handled by the switching system consists of a sequence of events or messages that has to be processed by the control unit. The control unit is not only incapable of handling all of the offered calls, but also its call handling capability can drop as the offered load increases. The real time available for call processing is a critical resource that requires careful management. Therefore, the overloading of this resource must be detected by a subscriber in the from of a dial tone delay or an uncompleted call which is either blocked or mishandled. The subscriber may respond by either dialing prematurely or by re-attempting a call. This action can further escalate the processors load, which is spent for uncompleted calls. Unless a proper control is used, the switching system can finally break down. In this paper, we paper, we propose a fuzzy overload detection and control method for switching systems, which can by generating fuzzy rules via fuzzy aggregation networks. Simulation results involving a switching system is given.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.8 no.3
• /
• pp.639-645
• /
• 2007

In this study, an estimation of call demand for the internet telephony was carried out using the monthly time-series data from June 2001 to December 2004. In the estimation, the call traffic was assumed to be explained by tariff of the internet telephony service, tariff of fixed and wireless services, income, quality of service, and lagged traffic variable. The traffic is assumed to follow the partial adjustment mechanism. The estimation result shows that the call traffic demand is elastic to the tariff of the service while it is inelastic to the change of income. The qualisty of service is regarded as an important factor of demand. Also there appeared the call demand is adjusting to the change of explanatory variables with some lags.

• Journal of the Korea Society of Computer and Information
• /
• v.8 no.1
• /
• pp.97-102
• /
• 2003

In this paper it Is to suggest that beyond the Previous communication concept of exchange, transmission mounting. and terminal , the call control system function should be added to the call control exchange server, to make an external telephone call available through the internet by connecting the interior line and the Internet. The function evaluation of call control system is found to become stable when the callers are 10 rather than 20 above, as a result of the more than ten times repeated concurrent calls. Furthermore, the evaluation shows that the program responds Quickly within a second, even when there are more than 100 callers as well as secures a stable system operation and mutual inter-feasibility due to a fast connectivity and a superb function.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.23 no.8
• /
• pp.2106-2112
• /
• 1998

In this paper, we propose an antenna sharing scheme between 800 MHz AMPS and CDMA systems using CDMA transmission antenna. We restructured the path of signals such that signals from two systems use AMPS amplifier or CDMA amplifier. The performance of proposed scheme is compared with currently operating system's performance in terms of call connection rate, call completion rate and dropped-call rate after implementing proposed method to the AMPS/CDMA basestation. The results show that the voice quality and call connection of the proposed system is comparable to that of the commercial systems. The number of antenna at the base station can be reduced without performance degradation if the proposed transmission antenna sharing scheme and previously reported receiving antenna sharing technique are used together.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2012.07a
• /
• pp.115-118
• /
• 2012

현재 서비스 산업에서는 급변하는 고객의 욕구를 맞추기 위해 기업 간의 서비스 경쟁 심화 및 다양한 각도에서의 최상의 고객서비스를 제공하기 위한 노력이 지속적으로 시도되고 있다. 서비스 종사자들도 기업과 고객이 기대하는 고객 중심 서비스 제공에 기여하고 있다. 과도한 서비스 제공은 서비스 종사자의 감정적 스트레스 등과 같은 부작용을 발생시키고 있는데, 기업과 고객과의 접촉 채널로서의 중요한 역할에 임하는 콜센터 상담사들의 스트레스 해소는 업무 향상에 있어서 필요하다. 스트레스 해소를 위한 정신적인 긍정어 즉, 역경을 이겨내는 긍정의 힘이 '회복탄력성'으로서, 콜센터 상담사의 회복탄력성을 분석한 결과 근무경력과 업무 유형에 따라 차이를 보였다. 회복탄력성의 구성요소 중 감정통제력, 충동통제력, 원인분석력, 공감능력, 자기효능감은 근무경력에 따라 차이를 보였고, 낙관성, 공감능력은 업무 유형에 따라 차이가 나타났다.