• 말소리와 음성과학
• /
• 제9권3호
• /
• pp.25-32
• /
• 2017

Besides their effect on the f0 contour of the following vowel, Korean stops are undergoing a sound change in which a partial or complete consonantal merger on voice onset time (VOT) is taking place between aspirated and lax stops. Many previous studies on sound change have mainly focused on group-normative effects, that is, effects that are representative of the population as a whole. Few systematic quantitative studies of change in adult individuals have been carried out. The current study examines whether the sound change holds for individual speakers. It focuses on inter-speaker and intra-speaker variability on sound change in contemporary Korean. Speech data were collected for thirteen Seoul Korean speakers studying abroad in America. In order to minimize the possible effects of speech production, socio-phonetic factors such as age, gender, dialect, speech rate, and L2 exposure period were controlled when recruiting participants. The results showed that, for nine out of thirteen speakers, the consonantal merger is taking place between the aspirated and lax stop in terms of VOT. There were also intra-speaker variations on the merger in three aspects: First, is the consonantal (VOT) merger between the two stops is in progress or not? Second, are VOTs for aspirated stops getting shorter or not (i.e., the aspirated-shortening process)? Third, are VOTs for lax stops getting longer or not (i.e., the lax-lengthening process)? The results of remarkable inter-speaker and intra-speaker variability indicate a synchronous speech sound change of the stop system in contemporary Korean. Some speakers are early adopters or active propagators of sound change whereas others are not. Further study is necessary to see whether the inter-speaker differences exceed intra-speaker differences in sound change.

• 예술인문사회 융합 멀티미디어 논문지
• /
• 제8권6호
• /
• pp.493-503
• /
• 2018

본 연구는, 한국어 학습자들의 주격과 목적격 관계절 프로세싱과 관련한 두 가지 가설인 선형거리가설(Linear distance hypothesis)과 구조거리가설(Structural distance hypothesis)을 통해 Keenan과 Comrie(1977)의 명사구 접근 위계(Noun Phrase Accessibility Hierarchy)를 검증한 O'Grady, Lee, 그리고 Choo의 2003년 연구를 바탕으로 설계된 conceptual replication 연구이다. 본 실험에서는 한국에서 공부하는 중국어 모어 학습자들을 대상으로 두 가설을 테스트 하였다. 더불어, 두 가설과 관련, 인지적인 능력(작동기억)의 개별차가 어떤 역할을 하는지에 대해서도 추가적으로 조사하였다. 실험 당시 지방의 모 대학 소재 한국어학당에서 공부하는 중국어 모어 학습자들이 실험집단으로 참여하였다. 각각의 실험 활동을 올바르게 인지하고 참여한 23명의 학습자 데이터에 한하여 통계 분석이 이루어졌다. 통제집단으로는 한국어 모어 대학생 15명이 참여하였다. 참가자들은 두 가지 실험 활동을 수행하였다: O'Grady외의 연구에서 사용된 동일한 관계절들이 포함된 그림 선택 활동과 작동기억 측정을 위해 디자인된 활동(Operation Span Task). 본 실험의 결과는 O'Grady외의 연구 결과와 다소 차이를 보였다. 즉, 주격보다는 목적격 관계절에 대한 학생들의 이해도가 상대적으로 현저하게 높게 나타났다. 세부적인 분석에 따르면, 이는 선형거리가설에 따른 현상이라기보다는, 상용절 전략을 사용한 프로세싱 결과로 해석하는 것이 더 적절해 보인다. 작동기억의 개별차와 관계절 프로세싱이 유의미한 상관관계가 없는 것으로 나타난 것도 이러한 과도한 상용절 전략의 결과로 볼 수 있다.

• 치위생과학회지
• /
• 제9권4호
• /
• pp.475-483
• /
• 2009

한국 노인을 대상으로 외국에서 비교적 높은 신뢰도와 타당도가 입증된 Oral Health Impact Profile 14(OHIP 14)를 한국의 문화적 특성이나 사고방식에 맞게 번역하여 강릉시에 거주하는 노인 만 65세 이상 668명을 대상으로 2005년 1월부터 2월까지 2개월간 OHIP 14 지표의 신뢰도와 타당도를 검증(Kappa index, Cronbach's alpha Correlation & Spearman ranked correlation coefficient)하고, OHIP 14와(구강)건강인식도, 구강건강상태, 전신건강 상태와의 차이를 검증(Kruskal Wallis test, Mann-Whitney U-test)함으로써, 향후 우리나라 노인 구강건강문제를 포괄적으로 파악하기 위한 지표로 활용할 수 있는 지를 검토하고자 하였다. 1. (구강)건강인식도와 OHIP 14는 전신건강인식도, 구강건강인식도, 치과치료필요도, 구강건강만족도, 통증에 대한 시각적 정도, 틀니만족도, 구강건강상태와 OHIP 14는 무치악 여부, 현존 자연치아의 개수, 치아치료필요, 전신건강상태와 OHIP 14는 질병의 개수, 치매, 눈, 귀, 호흡기, 심혈관, 소화기, 비뇨생식기, 근골격계, 신경계, 심리상태가 상관관계가 있는 것으로 나타났다. 2. (구강)건강인식도에 따른 OHIP 14는 전신건강인식도, 구강건강인식도, 치과치료필요도, 구강건강만족도, 통증에 대한 시각적 정도, 틀니만족도, 구강건강상태에 따른 OHIP 14는 무치악 여부, 치아치료필요, 현존 자연치아의 개수, 전신건강상태에 따른 OHIP 14는 치매, 귀, 호흡기, 심혈관, 소화기, 근골격계, 신경계, 심리상태에서 현저한 차이를 보였다. 본 연구는 일부 노인에서 임상지표를 이용한 OHIP 14에서 (구강)건강인식도, 구강건강상태, 전신건강상태가 OHIP 14와의 타당도와 연관성이 있다는 사실을 일부에서 확인할 수 있었다. 이상의 결과로 향후 한국노인의 구강건강문제를 포괄적으로 파악하는데 전통적인 구강건강 상태검사, 전신건강상태검사와 더불어 '구강건강 관련 삶의 질' 지표인 OHIP 14를 활용할 수 있을 것으로 사료된다.

• Journal of Preventive Medicine and Public Health
• /
• 제15권1호
• /
• pp.57-73
• /
• 1982

Questionaires on symptoms of respiratory disease have been used in Korea to elicit the probable health effects of air pollution in epidemiologic studies: The objectives of such studies often include comparing prevalence of symptoms of respiratory system between different population groups or between the same population groups, at different times. Unfortunately, little attention has, been paid to standardization of those questionaires, whether those are Korean. versions or not. Furthermore, no attempt to develop Korean ,questionaire on respiratory symptoms and relevant information has been made. Followed by 'a comparative study on responses to Korean version questionaires(English origin) of CMI, MRC, and ATS-DLD-78' two types of questionaires on respiratory symptoms and relevant information for Korean adult, which are short form (SUN-81-AS) and long forms (optional questions are added to the short one, SUN-81-AL), have been designed suitable to Korean background by authors (see Annex). The self-administered and closed-question questionaire were tested their validity and reliability by administration to l80 normal adults (medical and nursing students) and 60 clinical patients of Seoul National University Hospital, with spirometric exam. The results obtained and conclusions drawn are as follow: 1. It took less than 10 minutes to complete the questionaire SNU-81-AS and SNU-81-AL. 2. The test-retest reliability of each questions in AS and AL ,were observed as 92.7% and 92.1%, respectively. And all of the level of agreement are statistically significant with kappa statistic. 3. In addition to higher prevalence rate of symptoms in patients group compared, with, normal. group, the correlations between FEV 1.0/FVC predictive value(%) and number of symptoms were statistically significant inpatients group (See Fig. 1 and, Table 7). 4. The answer rate to optional questions in AL form among those who are not to do was about 10%, while the no-answer rate among who are to do was about 15% in Normal (medical and nursing students) group. 5. From the viewpoints of validity and reliability, the new Korean questionaire (SNU-81-AS and AL) developed by authors are to be recommendable to use in epidemiologic studies on respiratory illness in Korea. The self-administration, however, of optional questions in AL form may not assure the quality of data gathered.

• Journal of Animal Science and Technology
• /
• 제47권6호
• /
• pp.925-936
• /
• 2005

본 연구는 개 정액 채취방법에 따른 정액성상과 동결전 pentoxifylline의 첨가가 미치는 영향을 조사하였고, CASA를 이용하여 정자의 운동성 측정 및 생존율, 첨체 온전성, 저삼투성 팽창화를 조사하였다. 그리고 자연발정과 발정유기된 암캐에서 동결정액 주입의 임신율을 조사하였다. 1.품종별 정액성상을 조사한 결과 Beagle, English cockers spanie, Collie 및 Grey hound의 정액량과 정자 수에서 큰 차이가 없었으나, Shihtzu에서 정액량과 정자수가 유의적은 아니나 다소 적었다. 2.동결희석액에 pentoxifylline 0, 1 및 3mM 첨가에서 융해 후 정자활력은 각각 46.4, 56.4 및 47.2%였으며 1mM 처리구가 다른 처리구보다 유의적으로 높았다. 3.동결희석액에 pentoxifylline 첨가는 융해 후 정자의 생존성, 첨체막 온전성 및 원형질막 온전성(HOST) 모두 유리한 결과를 나타냈으며, 1mM의 첨가에서 정자의 생존성과 기능성이 향상되었다.4.자연발정에서 발정개시 후 11일, 13일 및 15일째 초음파기로 측정한 난포 크기는 각각 6.5mm, 11.5mm 및 8.0mm이였다. 배란은 13-15일 사이에 일어났다. 5.발정유기한 개체에서 수정후 임신 20일째부터 5일 간격으로 3회 측정한 태낭의 크기는 13.7mm, 28.5mm 및 40.5mm 이었다. 6.자연발정과 발정을 유기한 개체에서 pen- toxifylline 1mM이 첨가된 정액을 동결융해하여 인공수정 후 임신율은 71.4%와 75%로 두 방법간에 차이가 없었으나, 자연발정군에서 평균산자수는 6.6두였고, 발정유군의 평균산자수는 2.6두였다.

• Asia Marketing Journal
• /
• 제15권4호
• /
• pp.61-101
• /
• 2014

This study investigates when and how disagreements in online customer ratings prompt more favorable product evaluations. Among the three metrics of volume, valence, and variance that feature in the research on online customer ratings, volume and valence have exhibited consistently positive patterns in their effects on product sales or evaluations (e.g., Dellarocas, Zhang, and Awad 2007; Liu 2006). Ratings variance, or the degree of disagreement among reviewers, however, has shown rather mixed results, with some studies reporting positive effects on product sales (e.g., Clement, Proppe, and Rott 2007) while others finding negative effects on product evaluations (e.g., Zhu and Zhang 2010). This study aims to resolve these contradictory findings by introducing preference heterogeneity as a possible moderator and causal attribution as a mediator to account for the moderating effect. The main proposition of this study is that when preference heterogeneity is perceived as high, a disagreement in ratings is attributed more to reviewers' different preferences than to unreliable product quality, which in turn prompts better quality evaluations of a product. Because disagreements mostly result from differences in reviewers' tastes or the low reliability of a product's quality (Mizerski 1982; Sen and Lerman 2007), a greater level of attribution to reviewer tastes can mitigate the negative effect of disagreement on product evaluations. Specifically, if consumers infer that reviewers' heterogeneous preferences result in subjectively different experiences and thereby highly diverse ratings, they would not disregard the overall quality of a product. However, if consumers infer that reviewers' preferences are quite homogeneous and thus the low reliability of the product quality contributes to such disagreements, they would discount the overall product quality. Therefore, consumers would respond more favorably to disagreements in ratings when preference heterogeneity is perceived as high rather than low. This study furthermore extends this prediction to the various levels of average ratings. The heuristicsystematic processing model so far indicates that the engagement in effortful systematic processing occurs only when sufficient motivation is present (Hann et al. 2007; Maheswaran and Chaiken 1991; Martin and Davies 1998). One of the key factors affecting this motivation is the aspiration level of the decision maker. Only under conditions that meet or exceed his aspiration level does he tend to engage in systematic processing (Patzelt and Shepherd 2008; Stephanous and Sage 1987). Therefore, systematic causal attribution processing regarding ratings variance is likely more activated when the average rating is high enough to meet the aspiration level than when it is too low to meet it. Considering that the interaction between ratings variance and preference heterogeneity occurs through the mediation of causal attribution, this greater activation of causal attribution in high versus low average ratings would lead to more pronounced interaction between ratings variance and preference heterogeneity in high versus low average ratings. Overall, this study proposes that the interaction between ratings variance and preference heterogeneity is more pronounced when the average rating is high as compared to when it is low. Two laboratory studies lend support to these predictions. Study 1 reveals that participants exposed to a high-preference heterogeneity book title (i.e., a novel) attributed disagreement in ratings more to reviewers' tastes, and thereby more favorably evaluated books with such ratings, compared to those exposed to a low-preference heterogeneity title (i.e., an English listening practice book). Study 2 then extended these findings to the various levels of average ratings and found that this greater preference for disagreement options under high preference heterogeneity is more pronounced when the average rating is high compared to when it is low. This study makes an important theoretical contribution to the online customer ratings literature by showing that preference heterogeneity serves as a key moderator of the effect of ratings variance on product evaluations and that causal attribution acts as a mediator of this moderation effect. A more comprehensive picture of the interplay among ratings variance, preference heterogeneity, and average ratings is also provided by revealing that the interaction between ratings variance and preference heterogeneity varies as a function of the average rating. In addition, this work provides some significant managerial implications for marketers in terms of how they manage word of mouth. Because a lack of consensus creates some uncertainty and anxiety over the given information, consumers experience a psychological burden regarding their choice of a product when ratings show disagreement. The results of this study offer a way to address this problem. By explicitly clarifying that there are many more differences in tastes among reviewers than expected, marketers can allow consumers to speculate that differing tastes of reviewers rather than an uncertain or poor product quality contribute to such conflicts in ratings. Thus, when fierce disagreements are observed in the WOM arena, marketers are advised to communicate to consumers that diverse, rather than uniform, tastes govern reviews and evaluations of products.