• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.2
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• pp.579-603
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• 2018

In this paper we propose a QoS-enhanced intelligent stochastic optimal fair real-time packet scheduler, QUEST, for 4G LTE traffic in routers. The objective of this research is to maximize the system QoS subject to the constraint that the processor utilization is kept nearly at 100 percent. The QUEST has following unique advantages. First, it solves the challenging problem of starvation for low priority process - buffered streaming video and TCP based; second, it solves the major bottleneck of the scheduler Earliest Deadline First's failure at heavy loads. Finally, QUEST offers the benefit of arbitrarily pre-programming the process utilization ratio.Three classes of multimedia 4G LTE QCI traffic, conversational voice, live streaming video, buffered streaming video and TCP based applications have been considered. We analyse two most important QoS metrics, packet loss rate (PLR) and mean waiting time. All claims are supported by discrete event and Monte Carlo simulations. The simulation results show that the QUEST scheduler outperforms current state-of-the-art benchmark schedulers. The proposed scheduler offers 37 percent improvement in PLR and 23 percent improvement in mean waiting time over the best competing current scheduler Accuracy-aware EDF.

• The Journal of Korean Society for School & Community Health Education
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• v.16 no.3
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• pp.17-29
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• 2015

Objectives: The purpose of this study is to examine the trend of adolescent's smart phone addiction researches from 2012 to 2014 in Korea, and to propose further study for prevention of adolescent's smart phone addiction. Methods: Subjects were 169 researches about adolescent's smart phone addiction from 2012 to 2014 in Korea, and the theme was summarized as following: variables associated with adolescent's smart phone addiction, prevention and intervention strategies of it, the status and development of adolescent's smart phone addiction scale, awareness and prevention of smart phone addiction. Results: As a result of this study, 63.3% were as the most source of researches in 2014, and master's thesis was 74.6 percent. According to the theme of research, the most effects on smart phone addition is self-control and parenting and the most relational variables with smart phone addition are anxiety and parenting. The most affected by smart phone addiction is adaption of school life and conversational breakdown. The studies about prevention of smart phone addiction and intervention examine the effect of therapy program and group consultation. Conclusions: The educational program for using smart phone should be made and applied for preventing adolescent's smart phone addiction.

• The Journal of the Korea Contents Association
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• v.8 no.7
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• pp.17-25
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• 2008

The smart home environment focuses on recognizing the context and physical entities. And this is mainly focused on the personalized service supplied conversational interactions. In this paper, we proposed the recommendation using the context awareness based information filtering that dynamically applied by the context awareness as well as the meta data in the smart home. The proposed method defined the context information and recommended the profited service for the user’s taste using the context awareness based information filtering. Accordingly, the satisfaction of users and the quality of services will be improved the efficient recommendation by supporting the distributed processing as well as the mobility of services. Finally, to evaluate the performance of the proposed method, this study applies to MovieLens dataset in the OSGi framework, and it is compared with the performance of previous studies.

• Journal of Biosystems Engineering
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• v.23 no.3
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• pp.259-270
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• 1998

An automatic seedling transplanter, employed an innovative plug-seedling feeder was developed by improving the problems of conversational feeding and transplanting mechanisms. With conventional methods, missing and damage rates of seedling were high for long seedlings over 20cm and also breaking seed-bed was frequently observed. Thus, a pushout-bucket slide-hopper type trandsplanter was devised and tested. Test results of picking and transferring accuracies of the developed transplanter are as follows : A prototype transplanter performed with 1.5% of missing rate. The deviations of horizontal feed ranged from -0.3mm to 2.8mm and averaged 0.673mm for the 128-hoe test tray : and ranged from -lmm to ＋3mm and averaged 0.785mm for the 200-hole test tray. The deviations could decrease with precise manufacturing and lightening the mechanism. The maximum and deviations of vertical feed were -2.3mm and + 1mm, respectively, for the 128-hole test tray ; and were ＋3mm and ＋2.5mm, respectively, for the 200-hole test tray. The missing rate, seeding bruise rate and seed-bed damage rate were esitmate to be 1.3％, 0.4% and 3.5％, respectively, with the developed automatic transplanter.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.4B
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• pp.344-348
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• 2006

This paper proposes a QoS policy for cellular networks which support the policy based network management scheme. The policy exploits the existing underlying DiffServ mechanism and the priority-based packet scheduler in order to provide the packets with different handling priority depending on their belonging traffic classes. The simulation results reveals the effectiveness of the proposed policy under the network congestion; it shows that the goodput of the real-time traffic is not affected at all in spite of the surge of the non real-time traffic.

• Annual Conference on Human and Language Technology
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• 2018.10a
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• pp.141-146
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• 2018

최근 대화 모델 학습에는 시퀀스-투-시퀀스 모델이 널리 활용되고 있다. 하지만 기본적인 시퀀스-투-시퀀스 모델로 학습한 대화 모델은 I don't know 문제와 사오정 문제를 내포한다. I don't know 문제는 입력 발화에 대해 안전하고 무미건조한 단편적인 대답을 많이 생성하는 문제이다. 사오정 문제는 입력 발화에 대해 적절한 응답을 생성했지만 입력 발화와 동일한 의미를 지니지만 어순, 어미 등의 변화가 있는 발화에는 적절한 응답을 생성하지 못하는 문제이다. 이전 연구에서 디노이징 메커니즘을 활용하여 각각의 문제를 완화하는 대화 모델들을 학습할 수 있음을 보였으나 하나의 모델에서 두 문제를 동시에 해결하지는 못하였다. 본 논문에서는 디노이징 메커니즘을 활용하여 각각의 문제에 강점을 지닌 디코더들을 학습하고 응답 생성 시 입력 발화에 따라 두 디코더를 적절하게 반영하여 언급한 문제 모두에 대해 강건한 응답을 생성할 수 있는 모델을 제안한다. 제안하는 방법의 우수성을 보이기 위해 9만 건의 한국어 대화 데이터로 실험을 수행하였다. 실험 결과 단일 문제를 해결하는 모델들과 비교하여 ROUGE F1 점수와 사람이 평가한 정성 평가에서 성능 향상을 보였다.

• Journal of Korean Academy of Nursing
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• v.37 no.1
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• pp.52-63
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• 2007

Purpose: Effective communication is an essential aspect of nursing care. This qualitative study was performed to analyze nurse-patient conversations about medication. Method: The nurse-patient dialogue was collected by video tape recording during the nurse's duty time in an internal medicine ward. One hundred seventy-eight episodes were extracted from the conversation. Using conversational analysis, the functional phases and patterns of dialogue sequence pertaining to medication were analyzed. Results: Conversations about medication were very brief dialogues, so 68.8% of the dialogue had a duration of less than 20 seconds. However, it was a systematic and comprehensive dialogue which had structures and sequential dialogue patterns. Four functional phases were explored. greeting, identifying the patient, medicating, finishing. The medicating phase was essential, in which the nurse gave the drug to the patient and provided information initiated by the nurse simultaneously. The patterns of the dialogue sequence represented were the nurse provided information first, and then, patients responded to the nurse as accepting, rejecting, raising an objection, or asking again later. Conclusion: As the results of this study show, a nurse's role is important as an educator. For effective conversation about medication, the development of an educational program should be considered, which includes knowledge about medication and communication skills.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.11 no.1
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• pp.104-112
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• 2000

An evaluation of voice disorder has two methods. One is a perceptual analysis and the other is an acoustic analysis. All of these methods are just focused on sustained vowel. The analysis of conversational speech levels in voice disorder has not been achieved enough. The purpose of the present study is to compare two syllable words and sustained vowel in the vocal polyp patients and normal male speakers and to be applied on the vocal assessment and the voice therapy as a basic data. fifteen male patients with vocal polyp were the subject group. Fifteen healthy male were the control group for this study. The voices of the subject and control group, saved in MDVP of CSL were analyzed by its own analysis program. As a results, in subject group, the voice qualities between the vowel following lenis stop and the sustained vowel had no differences, and the voice qualities were different significantly between the vowel following heavily aspirated stop and the sustained vowel. In the control group the vowel fllowing stops and sustained vowel had also many differences in their voice quality, especially significant between the vowel following glottal stop and e sustained vowel.

• English Language & Literature Teaching
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• v.17 no.4
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• pp.293-312
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• 2011

Many immersion programs have been established and managed throughout Korea in recent years in schools, English villages and camps. Research on the effects of various programs has been reported with focus on the program types or the benefits and learning outcomes for the participants. The purpose of this study is to find out the effects of participation at English camp as a teaching assistant by comparing some factors such as competence, English abilities, and connection to current studies/career before and after camp experience. The results show that all 17 competence rates rose with 'crisis management' showing prominent change. Also, the camp experience provides opportunity for improving English Test scores, conversational skills, teaching skills, and mostly language confidence. Lastly, the camp helped in setting career goals and was helpful in the preparation process of job seeking. Most of the subjects, the teaching assistants at camp, replied that the impact of camp experience is useful in current studies/career. In conclusion, the experience as camp teaching assistant is valuable in many aspects.

• Proceedings of the KSPS conference
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• 1996.10a
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• pp.430-431
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• 1996

Among the scholars of second language (L2) acquisition who have used prosodic considerations in syntactic analyses, pausing and intonation contours have been used to define utterances in the speech of second language learners (e.g., Sato, 1990). In recent research on conversational analysis, it has been found that lexically marked causal clause combining in the discourse of native speakers can be distinguished as "intonational subordination" and "intonational coordination(Couper-Kuhlen, Elizabeth, forthcoming.)". This study uses Pienemann's Processability Theory (1995) for an analysis of the speech of native speakers of Japanese (L1) learning English. In order to accurately assess the psycholinguistic stages of syntactic development, it is shown that pitch, loudness, and timing must all be considered together with the syntactic analysis of interlanguage speech production. Twelve Japanese subjects participated in eight fifteen minute interviews, ninety-six dyads. The speech analyzed in this report is limited to the twelve subjects interacting with two different non-native speaker interviews for a total of twenty-four dyads. Within each of the interviews, four different tasks are analyzed to determine the stage of acquisition of English for each subject. Initially the speech is segmented according to intonation contour arid pauses. It is then classified accoding to specific syntactic units and further analysed for pitch, loudness and timing. Results indicate that the speech must be first claasified prosodic ally and lexically, prior to beginning syntactic analysis. This analysis stinguishes three interlanguage lexical categories: discourse markers, coordinator $s_ordinators, and transfer from Japanese. After these lexical categories have been determined, the psycholinguistic stages of syntactic development can be more accurately assessed.d.