• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.2
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• pp.989-992
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• 2005

본 연구에서는 JXTA 기반의 P2P 컴퓨팅 기술을 J2ME 와 MIDP의 기술과 접목하여 새로운 JXTA 기반의 모바일 P2P 솔류션 구현을 가능하도록 한다. MIDP에서 제공하는 API는 무선 JXTA피어를 창조하는데 기초 역할을 수행하지만 그럼에도 불구하고, MIDP의 제한된 라이브러리, XML 파서 부족등의 한계가 있다. 그래서 이러한 자원의 한계를 극복하기 위해 중간에 릴레이 서버를 두어 제한된 환경에서 서비스 제공을 담당한다. JXTA의 가장 중요한 설계 선택중의 하나는 피어에 의해 사용되는 운영체제나 개발언어를 가정하지 않는 것이다. JXTA프로토콜 규격은 명시적으로 네트워크 피어가 소규모 임베디드 장치에서 대규모 슈퍼컴퓨터 클러스터에 이르는 모든 종류의 장치가 될 수 있다. 이러한 기술에 J2ME의 모바일 기능을 추가한 JXTA를 사용하여 기존의 제한된 메시지 전달방법을 탈피하여 JXTA 기반의 P2P 시스템을 만드는데 있다.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.12 no.1
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• pp.55-60
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• 2001

Background and Objectives : Syllable Maximum Repetition Rate(MRR) is ability to repeat rapidly the articulators and is assessed for oromechanism function as one of the MPT. MRR is measured by rate(counts/sec), also simultaneously considered accuracy and consistency. The objective of the present was to examine stimuli effects and age and sex differences for MRR. Materials and Method : This study was participated 60 normal males and females(1 : 1) who were divided into two groups young(<40 years old) and old($\geq$40 years old). Stimuli were $/{P^=}a/,/{t^=}a/,/{k^=}a/,/{P^h}a/,/{t^h}a/,/{k^h}a/,/{P^=}{at^=}{ak^=}a/$ for, manner(tense and aspirated) of articulation, $/{p^h}{at^h}{ak^h}a/,/{t^h}{ap^h}{ak^h}a/$ for the effect of the order of syllable, glide /u-i/ for coordination of lip and tongue, interrupted vowel /i/ for laryngeal function. Results : There were little differences in two age groups and sex and manner of articulation for MRR tasks. The fastest average MRR of the single syllable included in this study was $/{t^=}a/$. significant differences existed between MRR for ${p^h}{at^h}{ak^h}a/ and /{t^h}{ap^h}{ak^h}a/$, which suggested that MRR was affected by the order of the syllables. MRR for interrupted vowel /i/ was about 2 counts/sec slower than average rate of 1 syllables. Conclusion : From these results, the order of the syllables was a crucial variable in MRR. rather than age or sex. There were no difference age, sex and manner of rate. The interrupted vowel repetition rate was slightly slow used and can provide basic information to assess the speech mechanism and can be useful to develop effective stimuli to differentiate the disordered group from normal.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.15 no.2
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• pp.145-152
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• 2004

Background and Objectives : The current study aimed to 1) compare of Lingual function and alveolar sounds between 4-year-old Korean children with and without ankyloglossia, 2) investigate the correlation between ① maximum lingual length-protrusion(MLL-P) and percentage of consonants corrects(PCC) focused on alveolar sounds, ② lingual movement and PCC focused on alveolar sounds, ③ MLL-P and lingual movement. Materials and Method : Twenty-two 4-year-old children participated as subjects in the study: a control group of 11 normal children and an experimental group of 11 children who were previously diagnosed as having ankyloglossia. They were measured for lingual function (lingual length, lingual movement) and the performances of speech articulation. Results : Children with ankyloglossia displayed significantly shorter MLL-P than 4 year normal children. Experimental group displayed significantly worse lingual movement, lower PCC in Picture consonants test, and lower PCC of alveolar sounds than control group. Ther was significantly high correlation between MLL-P and lingual movement of experimental group. Conclusion : This paper describes clinical measure and functional aspects of the tongue. Such baseline analysis provides a more definitive appraisal of lingual function as well as a more objective basis for diagnosis and treatment of ankyloglossia.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.8 no.2
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• pp.217-224
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• 1997

The present study was performed to investigate the voice onset time(VOT) of Korean stop consonants as the expanded research of Pyo and Choi(1996) : the intensity, and the air flow rate of Korean stops as the preliminary study f3r the classical singing training. Nine Korean stops(/P, P', $P^{h}$/, /t, t', $t^{h}$/, /k, k', $k^{h}$/) and a vowel /a/ were used as speech materials. CV and VCV syllable patterns were used for VOT measurement, and CV pattern was used for intensity and air flow rate measurement. Five males and five females pronounced the speech tasks with comfortable pitch and intensity : VOT, intensity, and air flow rate were measured. As results, the prevocalic stop consonants showed bilabials, the shortest VOT and velars, the longest one, except the unaspirated stops which showed the shortest was velar /k'/, and the alveolar /t'/ was the longest. Considering the tensity, heavily aspirated stops showed the longest, and the unaspirated, the shortest. Also the intervocalic stops showed similar results with the prevocalic stops, except the slightly aspirated stops which showed alveolar sound was the longest, and the bilabials, which showed the shortest was the slightly aspirated /p/, unlike the prevocalic stops, the unaspirated /p'/ the shortest. All of prevocalic stops showed the highest air flow rate in heavily aspirated stops, the second, thee slightly aspirated ones, and the lowest was the unaspirated stops. And as a whole, bilabials were the highest, and velars, the lowest, except in the heavily aspirated stops, which was the alveolar sound, the lowest. In the dimension of intensity, the unaspirated and bilabials were the highest, and the heavily aspirated and velars were e lowest, except the slightly aspirated stops, which were the bilabials the lowest, and the alveolars the highest.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.33 no.1
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• pp.26-30
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• 2022

Background and Objectives Cough suppression therapy (CST) is a physiotherapy that can be used for patients with chronic refractory cough (CRC). We aimed to investigate the efficacy of CST for CRC. Materials and Method A prospective randomized controlled trial was conducted in 27 patients with CRC. Participants were randomized to receive either standard mucolytic medications for CRC combined with supplemental CST (CST group) or standard medications alone (control group). CST consists of laryngeal hygiene management, humidification, cough suppression technique, breathing method, and counseling. We assessed the symptoms change at baseline and week 4 with the Leicester Cough Questionnaire (LCQ). Secondary efficacy outcomes included the degree of cough Visual Analog Scale (VAS) score (0 to 100 scale). Results From 2019 to 2021, 14 CST group patients and 13 control group patients were included. The improvement was significantly greater in the CST group than in the control group for cough VAS score (36.67 to 13.33 vs. 74.29 to 16.43, p<0.001). Patients in the CST group had a significant improvement in total (70.14 to 107.71, p=0.005), physical (31.42 to 43.86, p=0.015), psychological (23.57 to 40.14, p=0.003), and social (15.14 to 23.71, p=0.005) LCQ scores. However, there was not a significant pre- to post-treatment LCQ score improvement in control group. Conclusion CST might be an effective supplemental intervention for CRC.

• Investigative Magnetic Resonance Imaging
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• v.3 no.1
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• pp.53-59
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• 1999

Purpose : To evaluate the usefulness of functional MR imaging (fMRI) for language mapping and determination of language lateralization. Materials and Methods : Functional maps of the language area were obtained during word generation tasks and decision task in ten volunteers (7 right handed, 3 left-handed). MR examinations were performed at 1.5T scanner with EPI BOLD technique. Each task consisted of three resting periods and two activation periods with each period of 30 seconds. Total acquisition time was 162 sec. SPM program was used for the postprocessing of images. Statistical comparisons were performed by using t-statistics on a pixel-by- pixel basis after global normalization by ANCOVA. Activation areas were topographically analyzed (p>0.001) and activated pixels in each hemisphere were compared quantitatively by lateralization index. Results : Significant activation signals were demonstrated in 9 of 10 volunteers. Activation signals were found in the premotor and motor cortices, the inferior frontal, inferior parietal, and mid-temporal lobes during stimulation tasks. In the right handed seven volunteers, activation of language areas was lateralized to the left side. Verb generation task produced stronger activation in the language areas and higher value of lateralization index than noun generation task or decision task. Conclusion : fMRI could be a useful non-invasive method for language mapping and determination of language dominance.

• Investigative Magnetic Resonance Imaging
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• v.15 no.2
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• pp.130-138
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• 2011

Purpose : To compare fMRIs of visual and auditory word generation tasks, and to evaluate the difference of its activated areas and lateralization according to the mode of stimuli. Materials and Methods : Eight male normal volunteers were included and all were right handed. Functional maps were obtained during auditory and visual word generation tasks in all. Normalized group analysis were performed in each task and the threshold for significance was set at p<0.05. Activated areas in each task were compared visually and statistically. Results : In both tasks, left dominant activations were demonstrated and were more lateralized in visual task. Both frontal lobes (Broca's area, premotor area, and SMA) and left posterior middle temporal gyrus were activated in both tasks. Extensive bilateral temporal activations were noted in auditory task. Both occipital and parietal activations were demonstrated in visual task. Conclusion : Modality independent areas could be interpreted as a core area of language function. Modality specific areas may be associated with processing of stimuli. Visual task induced more lateralized activation and could be a more useful in language study than auditory task.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.340-342
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• 2004

본 논문에서는 네트워크와 라우터, 방화벽 등 유무선 네트워크를 구성하는 하부노드들의 보안관리를 위한 에이전트을 설계하였다. 또한 제시하는 에이전트는 에이전트 상위에서 정책 언어를 이용하여 다양한 하부 노드로 구성되는 네트워크에 대하여 동적인 관리에 대안 확장성을 지원하며, 해당 하부 노드를 관리하는 에이전트를 구성하여 정책 적용에 있어 효율을 증가시키고, P2P 기술을 적용하여 하부 노드에 문제 발생시 인접한 하부 노드들의 에이전트들 간에 문제를 해결하고 미연에 방지할 수 있도록 한다.

• Language and Information
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• v.20 no.1
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• pp.51-71
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• 2016

The status of the Korean morphological marker '-e ci' has been controversial whether it is a passive marker, an anticausative marker, or a passive/anticausative marker. However, the previous approaches that tried to classify '-e ci' constructions based on the syntactic verb classes (i.e. intransitive or transitive) were short of explaining the properties of the constructions. In this study, the '-e ci' constructions were distinguished based on agentivity, following Levin & Rappaport Hovav (1995) and Alexiadou et al. (2006). Moreover, how the verbal root meaning is associated with the passive/anticausative construction was investigated by means of Distributed Morphology (DM) (Embick 2010; Marantz 1997). I argued that the morphological marker '-e ci' is the instantiation of the absence of external arguments. With respect to the behavior of the Korean '-e ci' constructions with the semantics of each verbal root class, I found out that the '-e ci' constructions can form passives with the verbal roots that require the external arguments; whereas, the anticausatives cannot be formed with the roots that necessarily require the agentive arguments. However, contrary to the previous arguments that '-e ci' passives can be only formed with transitive verbs, it is discovered that non-agentive transitive roots do form anticausatives. Moreover, I argued that there are two types of the anticausatives - zero and '-e ci' anticausatives. Since the valency reduction is marked by the non-active voice morphology, the zero anticausatives appear only with the roots that do not require external arguments. The different '-e ci' constructions (passives, '-e ci', and zero anticausatives) are represented by the distinct syntactic structures. I proposed that the morphological similarity between the passives and the '-e ci' anticausatives is due to the presence of VoiceP, which introduces the external arguments. Moreover, the lack of the voice morphology in the zero anticausatives is explained by the absence of the VoiceP.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.16 no.2
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• pp.158-164
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• 2005

Melody intonation therepy (MIT) is to improve the linguistic aspects of the verbal utterance for aphasic patients utilizing the intact right brain. It is applied to the aphasic patients with good comprehension, poor fluency, and little available speech are thought to be ideal candidates. The purpose of the study was to investigate the effects of Korean Melody intonation therapy (kMIT) in patients with non-fluent aphasia. Five male non-fluent aphasic patients were participated in this study. Average ages were 49.9 years old. Each therapy took 45-50minutes once a week for six months. Aphasic Screen lest (RISS) was used to assess language parameter such as Auditory comprehension, oral expression, reading, writing and calculation ability before and after kMIT. Mean of Length Utterance, verbal intelligibility and articulation disorder were assessed also. Computerized Speech Lab was used to assess the acoustic characteristics of aphasic patients before and after kMIT. The results are as follows : 1) Auditory comprehension, oral expression, reading, writing and calculation ability of the subjects increased after UH'. However, only oral expression showed significant difference (p<0.05). 2) Mean of Length Utterance of five patients generally increased after Un. 3) After kMIT, verbal intelligibility increased and showed significant difference (p<0.05). 4) Misarticulation rate generally decreased after m. 5) Voice Onset Time of the alveolar lenis /t/ and velar lenis /k/ gradually decreased after kMIT. 6) However, intonation pattern were increased gradually in yes'no question after kMIT.