• 한국소음진동공학회논문집
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• 제15권12호
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• pp.1378-1388
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• 2005

Spatial control of sound is essential to deliver better sound to the listener's position in space. As it can be experienced in many listening environments. the quality of sound can not be manifested over every Position in a hall. This motivates us to control sound in a region we select. The primary focus of the developed method has to do with the brightness and contrast of acoustic image in space. In particular, the acoustic brightness control seeks a way to increase loudness of sound over a chosen area, and the contrast control aims to enhance loudness difference between two neighboring regions. This enables us to make two different kinds of zone - the zone of quiet and the zone of loud sound - at the same time. The other perspective of this study is on the direction of sound. It is shown that we can control the direction of perceived sound source by focusing acoustic energy in wavenumber domain. To begin with, the proposed approaches are formulated for pure-tone case. Then the control methods are extended to a more general case, where the excitation signal has broadband spectrum. In order to control the broadband signal in time domain, an inverse filter design problem is defined and solved in frequency domain. Numerical and experimental results obtained in various conditions certainly validate that the acoustic brightness, acoustic contrast, direction of wave front can be manipulated for some finite region in space and time.

• 동아시아식생활학회지
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• 제20권3호
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• pp.481-490
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• 2010

The shock of melamine-contained food has been known with the incident of hospitalization or death of infants at the age of 11-month old in China. The purpose of this study was to examine consumers' risk perception, attitude and purchase behavior of melamine-contained food which recently came to the fore as a social issue, focusing on the relationship between consumers' attitude and purchase behavior based on physical risk, social risk, psychological risk, financial risk, consumers' attitude and purchase behavior. Study findings are as follows. First, the four factors of risk perception of melamine-contained food were significantly different by consumers. Consumers regarded social risk as most significant and it was followed by financial risk and psychological risk. And they regarded physical risk as most insignificant. Second, as for the difference of risk perception by demographic features, such factors as gender, age, marital status and schooling had no statistically significant influence. Third, the potential risk of melamine-contained food had a negative influence upon consumers' attitude and purchase behavior. In addition, consumers' attitude and purchase behavior were decided by perceived risks. This finding implies that consumers' attitude can accompany with negative or positive behavior and consumers' behavior can be related to social, financial and physical risks. Because the risk perception of melamine-contained food can cause consumers' distrust about all kinds of food in general, domestic manufacturers of milk product-contained confectionery and food can be harmed. In order to overcome this problem and make consumers purchase all the milk products and milk-contained food without fear, governmental agencies must reestablish systems with which the safety of imported raw materials and its processing can be insured and manufactures must improve the quality of products in a diverse and discriminative manner. This study seems to be meaningful in that it examined consumers' risk perception of melamine-contained food, a current social issue, and then looked into the influence of risk perception upon consumers" attitude and behavior, thus presenting the strategy of reestablishing the system of relationship between consumers and business entities in a desirable manner.

• 동아시아식생활학회지
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• 제26권6호
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• pp.517-530
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• 2016

This research was conducted on Seoul region elementary, middle, and high school nutritionists to analyze execution conditions of HACCP control standards, focusing on PHF and CCP 3~CCP 7, in order to determine more efficient methods for school meals' sanitation system settlement. All surveys were distributed and collected via email. A total of 305 survey papers were collected, and 300 school results were analyzed. The following percentage of nutritionists perceived the following foods as potentially hazardous foods(PHF): raw or cooked animal foods (94.7%), blossomed seed products (93.7%), packed pickled radish (36.7%), unopened mayonnaise (30.2%), and unopened snails & corn cans 54.8%. Exactly 51.2% of nutritionists believed that foods were properly supplied via CCP 3's food quality standard. Exactly 33.9% of nutritionists answered that they had never corrected the digital thermometer since there were no issues with the CCP 4's digital thermometer correction frequency level. As for CCP 5's chroline disinfection of green vegetables, 57.1% of nutritionists answered that vegetables were slightly softened while 36.2% said there were no changes at all. According to the nutritionists, the most difficult execution level of CCP levels (excluding CCP 3, CCP 4) was CCP 7 (37.1%), CCP 6 (16.4%), and CCP 2 (16.4%). For the above results, proper training/education must be enforced so that nutritionists can have a clear notion of the PHF. A solution must be developed enhancing the execution of CCP 4's digital thermometer correction frequency level. For CP 5's chroline disinfection of green vegetables, food characteristics must be considered to suggest an appropriate number and method of cleansing. Furthermore, cooking employees are needed that properly use and manage cooling & heating equipments to maintain heated foods above $57^{\circ}C$ under the CCP 7 standard.

• 정보관리학회지
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• 제24권2호
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• pp.5-27
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• 2007

도서관 서비스 품질평가 도구인 $LibQUAL+^{TM}$에 대한 많은 연구논문이 발표되었으나, $LibQUAL+^{TM}$ 요인과 도서관 서비스 이용의도 사의의 관계를 연구한 사례는 매우 드물다. 본 논문은 Icek Ajzen의 계획적 행위이론을 적용하여 도서관 서비스 이용의도에 영향을 미치는 요인을 추출하고자 하였다. 이러한 요인을 추출하기 위하여 미국 대학생을 대상으로 웹 설문을 실시하였고, 요인분석 및 다중회귀분석을 통하여 수집된 데이터를 분석하였다. 분석결과, 도서관 서비스 이용의도는 도서관에서 제공되는 서비스 품질에 대한 이용자의 태도와 관련이 있었다. 통계분석결과 유의미하게 나타난 태도요인은 이용자가 지각한 (1) 정보원 및 시스템 이용시의 주도성, (2) 서비스 제공 의향정도, (3) 제공되는 정보의 포괄성이었다. $LibQUAL+^{TM}$ 요인간의 상대적 중요도를 측정하였다. 반면에, 이용의도에 유의미한 영향을 미치지 않는 요인으로는 정보접근의 적시성과 물리적인 공간으로서의 도서관을 지각하는 부분이었다. 본 연구의 의의는 도서관 서비스 품질평가에 대한 연구의 영역을 확장시키고 이용의도를 고려한 새로운 평가 체계를 제시한 점이다.

• The Journal of Asian Finance, Economics and Business
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• 제5권3호
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• pp.113-119
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• 2018

Higher Education Institutions (HEIs) are place contributing to the intellectual advancement of the nation, quality human resource, and to a number of socio-economic improvements for society and organizations. Despite facilitators and staffs are the bare-bone of HEIs, there is a scarcity of research, both conceptual and empirical, focusing on their organizational citizenship behaviors (OCB). To attempt to fill this gap, this article develops a conceptual model of OCB under influencing of organizational justice and job satisfaction. The prospective respondents were chosen randomly from HEIs (public and private). Individuals have been employed at least one year and above will be the unit of analysis in which the experimental test of the proposed model will be conducted. The results suggest that organizational citizenship behavior is one of the most important factor influence the organizational performance. Furthermore, the performance of HEIs does not affect only the national human resources, but also impact on national economy. In this context, a conceptual framework is proposed to study the determinants of organizational citizenship behavior in the form of organizational justice and job satisfaction. Additionally, the ultimate benefits of OCB through perceived organizational justice with job satisfaction as mediator is enlightened. Finally, the authors discuss the managerial implications of their research.

• 디지털융복합연구
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• 제10권4호
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• pp.11-22
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• 2012

직장이 아닌 곳에서 근무하는 스마트워크는 조직과 조직 구성원 모두에게 도움이 되는 미래지향적인 근무 방식으로 최근 화두가 되고 있다. 본 연구는 콜센터를 운영하고 있는 기업을 대상으로 직장근무자와 스마트워크 근무자간의 서비스풍토, 직무만족, 조직몰입, 서비스수행능력 등 조직 관련 주요 변수에 대한 인식 차이를 조사하였다. 분석 결과, 스마트워크 근무자들이 직장근무자들에 비해 서비스풍토에 대한 인식이나 직무만족이나 조직몰입, 서비스수행능력 등 모든 측면에서 긍정적인 것으로 나타났다. 이와 같은 결과를 바탕으로 스마트워크의 활성화를 위한 시사점과 정책 방안을 제시하였다.

• ETRI Journal
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• 제36권4호
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• pp.581-590
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• 2014

This study investigates the impact of tweets on box office revenue. Specifically, the study focuses on the times when tweets were written by examining the impact of pre- and post-consumption tweets on box office revenue; an examination that is based on Expectation Confirmation Theory. The study also investigates the impact of intention tweets versus subjective tweets and the impact of negative tweets on box office revenue. Targeting 120 movies released in the US between February and August 2012, this study collected tweet information on a daily basis from two weeks before the opening until the closing and box office revenue information. The results indicate that the disconfirmation that occurs in relation to the total number of pre-consumption tweets for a movie has a negative impact on box office revenue. This premise suggests that the formation of higher expectations of a movie does not always result in positive results in situations where tweets on perceived movie quality after watching spread rapidly. This study also reveals that intention tweets have stronger effects on box office revenue than subjective tweets.

• 웰빙융합연구
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• 제7권2호
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• pp.23-29
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• 2024

Purpose: This study aims to investigate consumer attitudes towards healthy foods, focusing on low-calorie options, and their impact on purchasing behavior. Methods: The study utilizes structural equation modeling, which incorporates statistical tools such as SPSS and AMOS for thorough analysis. This involves collecting data over a period of time and then inferring patterns and relationships through correlation and trend analysis. Results: The study found that attributes such as quality, price, functional value, and emotional value have a significant impact on customer satisfaction and repurchase intentions, but not on nutrition and brand. The study provides a comprehensive understanding of the factors that influence consumer attitudes and purchase behavior toward healthy indulgences in the context of low-calorie foods, and has important implications for both academic research and practical marketing strategies. Conclusions and Implications: This study provides new insights into consumer behavior theory by validating the impact of the perceived value of low-calorie products on attitudes and purchase behavior, which is of great academic value. It is also expected to provide useful information for the formulation of effective marketing strategies for low-calorie products and the development of products that meet consumer needs.

• 방송공학회논문지
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• 제26권3호
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• pp.308-320
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• 2021

기존 정지 이미지를 활용한 화질 연구는 '자연스러움'에 초점을 맞추고 있으며 이는 기억색과 깊은 관련을 맺고 있다. 기억색은 주로 선경험이 있는 친숙한 대상에 대해 형성되며 이러한 기억색을 충실히 반영할수록 화면에 재현된 화질의 자연스러움이 증가한다. 특히 기억색의 밝기와 채도는 '자연스러움'뿐만 아니라 화질의 선호도를 증가시키는데 중요한 역할을 갖는다. 이에 기존의 화질 연구의 경우 기억색이 있는 자연물과 인물 중심으로 화질 특성을 연구한 바 있다. 본 연구에서는 TV 컨텐츠를 장르별로 분류하여 각 장르별 화질 특성을 도출하였다. 이를 위해 각 장르(스포츠, 다큐멘터리, 뉴스, 오락 및 음악, 영화)의 대표 이미지를 추출하고 각 이미지의 밝기, 대비, 채도를 조절한 후 인지된 화질을 평가하는 실험을 진행하였다. 실험 결과, TV 컨텐츠 장르를 상황적 맥락에 따라 근접 경험과 간접 경험의 두 가지 범주로 분류할 수 있었다. 근접 경험은 야외 스포츠, 드라마, 자연 다큐멘터리 컨텐츠를 포함하며 근접 경험 컨텐츠의 화질은 밝기와 대비와 밀접한 관련이 있었다. 간접 경험은 뉴스, 음악 쇼, SF/액션 영화 컨텐츠를 포함하며 해당 컨텐츠의 화질은 대조와 채도와 밀접하게 연관되었다. 이러한 결과에 따라 근접 경험으로 분류되는 컨텐츠의 경우 밝기와 대비 조절에 따라 최적 화질을 구현할 수 있으며, 간접 경험으로 분류되는 컨텐츠의 경우 대조와 채도 조절에 따라 최적 화질을 구현할 수 있다.

• 정보화정책
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• 제18권4호
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• pp.59-84
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• 2011

인터넷정보는 네티즌들의 정책과정참여와 정부신뢰에 큰 영향을 미칠 것으로 추론되며, 그 영향은 인터넷정보의 질을 높게 인식할수록 클 것이다. 이를 실증적으로 규명하기 위해 인터넷정보의 질을 구성하는 요소를 파악하고, 인터넷정보의 질에 대한 네티즌의 인식이 정책과정참여와 정부신뢰에 미치는 영향을 분석했다. 전국의 20-30대 네티즌을 대상으로 2010년 11월 20일부터 2010년 11월 30일까지 온라인 설문조사를 실시하였으며, 회수된 300부 중 불성실 응답을 제거하고 연구대상으로 적절하지 않은 자료를 제외한 266부의 데이터를 토대로 분석하였다. 분석결과는 첫째, 인터넷정보의 질에 대한 긍정적 인식은 온라인 정책과정참여를 증가시키는 반면에 오프라인 정책과정참여를 약하게 감소시킨다. 둘째, 온라인 정책과정 참여는 오프라인 정책과정참여를 활성화시키고 있다. 셋째, 오프라인 정책과정참여는 정부신뢰에 부정적인 영향을 강하게 미치는 것으로 나타난 반면에 온라인 정책과정참여의 정부신뢰에 대한 영향은 나타나지 않았다. 이러한 결과는 인터넷정보의 질이 향상되면, 오프라인 정책과정참여는 조금 약화되는 반면에 온라인 정책과정참여는 상당히 활성화될 것임을 의미한다. 이어서 온라인 정책과정참여는 오프라인 정책과정참여를 대폭 증가시킴으로써 정부신뢰를 크게 약화시킬 개연성이 있음을 의미한다.