OBJECTIVES : Visibility at night can be improved by using retroreflection for short distances and phosphorescent line markings for long distances. In this study, we analyzed the characteristics of the phosphorescent line marking through a laboratory luminance test. Field performance analysis was performed through tests conducted on the road. We also examined the luminance measurement methods using the digital image obtained during the phosphorescent visibility evaluation. METHODS : In this study, the laboratory luminance test of the phosphorescent line marking was conducted using seven specimens to characterize the luminance changes according to the type of the glass beads, the thickness of the phosphorescent line marking, and the brightness and irradiation time of the light source. Phosphorescent and general line markings were made at 150 m to investigate the field luminance performance. A preliminary review of the luminance measurement methods was made using a digital image from a digital singlelens reflex (DSLR) camera. The measured luminance ratio of the general and the phosphorescent line markings was compared with the calculated luminance ratio using luminance analysis. RESULTS: Through the laboratory luminance test, it was seen that the change in luminance, which corresponds to the brightness of the light source, appears large but the influence of the thickness and irradiation time is low. The field performance test of the phosphorescent line marking conducted on the road involved measuring the luminance on the day the marking was made and 7 days after the marking was made. The luminance was found to be 190 mcd/m2 at 30 min after sunset and approximately 10-12 mcd/m2 4h after sunset. The results of the luminance test were captured using a digital image for each time group. The luminance ratio of the phosphorescent line marking, when compared to that of the general line marking, showed a similar trend within a 13% maximum error. Additionally, when this luminance ratio is compared to the direct field measurement, it could be confirmed that the luminance ratio, as captured in the digital image, showed a similar tendency. CONCLUSIONS : 1) The change in luminance corresponding to the brightness of the light source is significant in comparison with that corresponding to the thickness and the irradiation time. In addition, the results of the field test for the phosphorescent line marking satisfied the phosphorescent fire protection standard. 2) We examined the validity of the luminance measurement method using a digital image and we concluded that the change in the luminance ratio shows a similar tendency in both the cases. The results can form the basis for luminance measurement methodology for the construction and maintenance of phosphorescent line markings.

The twenty-first century is the Age of Digitization and Internet. According to the backdrop we are in, the paper points out that arguments and grounds of argument in the essay composed by Zhou Suyuan and Zhang Guangzhao still need to be further discussed: 1. The instrumentality of Chinese characters in the Age of Digitization can not determine its comlexity or simplicity in appearance. 2. It is a false proposition to say that the simplification is a must for the evolution, optimization and beautification of Chinese characters. 3. For further simplification of characters is definitely a possibility, but not a necessity. The Age of Digitization requires characters to stay in a relatively stable state. The standardization and unification of Chinese characters must be from a perspective of informatization and internationalization. As for now, there is no possibility or necessity for further simplification.

The purpose of this study was to investigate alteration of chemical properties in red leaf lettuces(Lactuca sativa L.) exposed to digital music every day. The red leaf lettuces were cultivated in two hydroponic systems composed of two layers. In the first experiment, the red leaf lettuces with treatment were exposed to the digital music, while the lettuces under control condition were not exposed to the digital music. At harvest(6 weeks after planting), fresh weight and chlorophyll content were measured and compared the treatment with the control group. Subsequently, red leaf lettuces of the next experiment were compared to fresh weight, chlorophyll, ascorbic acid and anthocyanin content during different vegetation growth stages(4 weeks and 6 weeks after planting). The comparison of data for all experiment was also divided into upper and lower parts because of the difference of temperature in hydroponic systems. As a results, fresh weight and anthocyanin of the red leaf lettuces might be influenced by the difference of temperature variations. Chlorophyll of the red leaf lettuces was not easily influenced by digital music and difference of temperature. It was also shown that ascorbic acid as inactive molecule was not easily influenced by physical response like music.

본 연구는 기존의 부산국제광고제의 정체된 문제점을 보완하기 위해서 디지털 영상 부문 도입 에 따른 부산국제광고제 수익창출 및 활성화 방안에 대해서 알아보았다. 최근 급속한 매체 환경 변화에 적합한 해외 사례를 바탕으로 부산국제광고제 디지털 영상부문 신설 안을 제시하고, 전문 가 심층인터뷰를 통해 현실적인 방안을 모색하였다. 연구결과는 다음과 같다. 우선, 디지털 영상 부문 도입 방안으로 전문가들은 글로벌 광고주가 미션을 부여하여 전 세계 크리에이터가 영상을 제작하는 방식을 가장 선호하였다. 하지만 현실적 인 방안으로 해외 영상제에서 실행하고 있는 웹, 모바일 UCC 영상분야를 신설하여 다양한 작품 을 확보하는 것이 중요하다고 제안하였다. 두 번째로 수익창출 방안으로는 출품료를 위한 수익창 출과 광고주 후원을 통한 수익창출 방안을 제시하였다. 결과적으로 전문가들은 부산국제광고제 디지털 영상부문을 크게 브랜디드 콘텐츠(Branded Contents) 부문과 솔루션 콘텐츠(Solution Contents) 부문으로 나누었고, 그에 따른 내용은 세부 연구결과를 통해 살펴볼 수 있다.

This paper examines the effects of student-centered collaborative project programs using digital media for the EFL university students. To compare the effectiveness of a digital storytelling project program (127 students) and a topic-research presentation program (126 students) we used pre- and post-TOEIC English speaking tests. We also administrated a survey on students’ attitude towards their learning, interviewed students and observed the programs. The results showed that there was a significant improvement of the students’ English speaking ability in the two programs. The score of the topic-research presentation program improved more than that of the digital storytelling program. However, the students in the digital storytelling program were more motivated to engage in the collaborative project than those of topic-research presentation program in terms of interest and participation. Based on the results of the two programs, this paper suggests the educational implications for those who want to develop and implement collaborative projects using digital media for the EFL university students.

이 논문은 스마트 폰, 컴퓨터, 혹은 태블릿PC와 같은 전자기기를 통해서 정보를 구글링(구글로 검색하기)하는 명확하게 현대적인 실천을 검토한다. 구글과 다른 검색엔진뿐만 아니라 온라인 데이터베이스, 사전, 컴퓨터 응용 프로그램과 같은 디지털 인터페이스를 통해 성전(sacred texts)에 접근하는 것이 가능해진 것은 10~15년 전에는 상상조자 할 수 없던 일이다. 이러한 디 지털 도구의 개발은 간접적으로 성전에 다가갈 수 있는 다수의 새로운 경로 를 만들어낸다. 이 논문은 전통적으로 일본의 쇼토쿠 태자 (574~622)가 저술한 것으로 보 는“삼경의소”(三 義疏, 세경전에대한논평)에대해검토한다.“ 삼경의소” 는 한문으로 쓰인 세 권의 불교 주석서를 통칭하는 제목이다. 이 논문은 이들 세 문헌에 대해 구글 검색에서 수집된 정보를 전통적 형식의 불교 주해와 비교하는 방법을 숙고한다. 이들 문헌에 대한 디지털과“비주석적”형식에 초 점을 맞춤으로써 나는 우리가 문헌에 관심을 기울이는 상이한 방법들이 어떻 게 문헌의 의미와 가치를 재생산하는가를 묻는 것뿐만 아니라 그들이 어떻게 연관되고, 서로에게 영향을 주는지를 질문하는 것처럼“삼경의소”에 대한 보 다 포괄적인 이해를 발전시킬 수 있기를 기대한다.

PURPOSES : The objective of this study was to evaluate the results of the dynamic immersion test (DIT) through digital image analysis (DIA). METHODS : The asphalt binder retained post DIT was inspected visually by more than three investigators. However, because visual observations can be subjective, depending on the inspector’s skills and knowledge, DIA was also performed. The threshold value for the DIA was determined by a mesh analysis, in which the digital image to be analyzed is divided into very small meshes. In addition, the bitumen bond strength (BBS) test was also performed to the compare the visual results with the mechanical values. RESULTS AND CONCLUSIONS : Depending on the materials used, various methods can be used to predict the behavior of retained asphalt. However, the increasing ratio in the trend of retained asphalt shows different behaviors among the evaluation methods. In this study, the results of the visual observations were significantly different from those of the DIA, the mesh analysis, and the BBS tests. Thus, DIA is an appropriate method for evaluating the results of the DIT. However, in order to use this technique in the field, it is necessary to determine a more reasonable threshold value by performing DIA on various materials.

With advances in digital technology, retailers are utilizing digital signage which would be a visual factor of atmospherics in a retail environment. Based on stimulus-organism-response (S-O-R) model, this study was to examine a moderating effect of digital signage in relationship between atmospherics and store patronage. To collect data, a self-administered questionnaire was developed based on literatures, and mainly contained usage experience of digital signage, atmospherics (20 items), and store patronage (6 items). All items were measured on 7 point rating scale. Two sampling frames for this study were involved: experienced sample from retail stores with digital signage vs. unexperienced sample from retail stores without digital signage. Each sample was separately asked to complete the same questions regarding experience with digital signage, store atmospherics and store patronage. A total 497 usable responses (n=278 for experienced digital signage; n=219 for unexperienced digital signage) were obtained from consumers who were aged from 20 to 49 years old. For experienced sample, digital signage has been used various types: for example, location-based digital screen for store and shopping information (52.5%) was the most experienced, and followed by LED screen (28.8%) and others (e.g., Digital Look-Book, Virtual-Try-on, Interactive Screen, and Self-checking kiosk) in the fashion retail environments. Of total respondents, females (50.7%) were slightly more than were males (49.3%). For data analysis, descriptive statistics, factor analysis, t-test, hierarchy regression analysis were used by using PASW18. Preliminarily, factor analysis revealed that atmospherics consisted of three elements, such as store layout, visual aesthetics and interior display. The factor loadings were ranged from .60 to .80 and three factors were accounted for 70.42% of total variance. Compared with store without digital signage, the mean score of atmospherics (e.g., store layout, visual aesthetics, and interior display) was more highly rated in the retail stores with digital signage. In a hierarchical multiple regression model, two factors of store layout and interior display had a significant effect on store patronage in the first step (F=69.23, p<.001, Adjusted R2=.29). The store layout (β=.33, p<.001) and interior display (β=.17, p<.01) were likely to increase consumers’ store patronage. Also, interaction effect of digital signage and atmospherics was significant in the second step (R2 Change=.014, F Change=3.386, df1=3, df2=487, p<.05). Digital signage had moderating effect only in the relationship between interior display and store patronage (β=.65, p<.05). The findings suggest that digital signage plays an important role as a stimulus in improving atmospherics at the retail environments. Particularly, the digital signage would be effective in a good interior display including POP signs, product display, racks and cases, furniture, which can lead to store patronage. This study provides a managerial implication into retailers for improving atmospherics by utilizing retail technology inside a store. Especially for fashion retailers, it is required to combine digital technology service with in-store visual merchandising for a retail environment.

Sport is a lucrative and universal form of popular culture, transcending international and social boundaries (Andrews & Jackson, 2001) providing sports men and women with increasingly lucrative financial opportunities through involvement in sponsorship and endorsement deals (Colapinto & Benecchi, 2014). Whilst sport celebrities have long been used in marketing communication and sponsorship campaigns to increase levels of consumer interest and attention (Gupta 2009; McCracken 1989; Van der Veen & Song, 2001), what is not well researched, is the role that electronic word-of-mouth communications plays in the transmission of potentially negative effects on consumer attitudes towards the sport celebrity brand image when a transgression occurs. Not only does electronic word-of-mouth communication make the transmission of a transgression immediate and widely disseminated, it also provides numerous opportunities for celebrities themselves to share information about themselves and their lives sometimes resulting in a “too much”, “too soon” and “too often” nexus. With the removal of a social privacy filter common with many of the younger generation, this TMI (too much information) state or increased self-disclosure (Kaplan & Haenlein, 2010) makes managing the brand image of sport celebrities by their managers and their sponsors an increasingly difficult problem.

This paper aims to narrow the gap in research on the impact of universities’ digitalization on reputational assessments by students. A measurement for perception of universities digital advancement (PDA) is developed and integrated in a model to explain university reputation and students’ WoM behavior. Results highlight the importance of the PDA.

This research was conducted in order to examine the effects of user socio-demographics and recently introduced streamlined technology readiness index TRI 2.0 (Parasuraman & Colby, 2015) on mobile device use in B2B digital services. Mobile adoption has been studied from a consumer perspective, but to the best of the authors’ knowledge, very few studies explore mobile use in B2B markets. Mobile marketing is becoming a strategic effort in companies, as digital services not only in B2C but also in B2B sector are getting increasingly mobile (Leeflang, Verhoef, Dahlström & Freundt 2014). This raises an interest to better understand the characteristics of those mobile enthusiasts who primarily use B2B services via a mobile device rather than via a personal computer. The study tests hypotheses with a large data set of 2,306 business customers of which around 10 percent represent these innovative mobile enthusiasts. Technology readiness is an individual’s propensity to embrace and use new technologies for accomplishing goals in home life and at work (Parasuraman & Colby, 2015; Parasuraman, 2000). Parasuraman and Colby (2015) recently introduced an updated version of the original Technology Readiness Index (TRI 1.0) scale called TRI 2.0 to better match with the recent changes in the technology environment. At the same time they streamlined the scale to a compact 16-item version so that it is easier for researchers to adopt it as a part of research questionnaires. Likewise the original scale, TRI 2.0 consists of four dimensions: optimism, innovativeness, discomfort, and insecurity. Optimism and innovativeness are motivators of technology adoption while discomfort and insecurity are inhibitors of technology readiness, and these motivator and inhibitor feelings can exist simultaneously (Parasuraman & Colby, 2015). Optimism is a general positive view of technology containing a belief that technology offers individuals with increased control, flexibility and efficiency in their lives. Innovativeness refers to a tendency to be a pioneer and thought leader in adopting new technologies. Discomfort reflects a perception of being overwhelmed by technology and lacking control over it. Moreover, insecurity reflects distrust and general skepticism towards technology, and includes concerns about the potential harmful consequences of it. As individuals differ in their propensity to adopt new technologies (Rogers, 1995), the authors propose that technology readiness influences mobile device use of B2B customers: H1: Optimism has a positive effect on mobile device use of B2B digital services. H2: Innovativeness has a positive effect on mobile device use of B2B digital services. H3: Insecurity has a negative effect on mobile device use of B2B digital services. H4: Discomfort has a negative effect on mobile device use of B2B digital services. The earlier literature argues that socio-demographic factors such as gender (Venkatesh & Morris, 2000; Chong, Chan & Ooi, 2012), age (Venkatesh, Thong & Xu, 2012; Chong et al., 2012; Kongaut & Bohlin 2016), education (Agarwal & Prasad, 1999; Chong et al., 2012; Puspitasari & Ishii 2016) and occupation (Okazaki, 2006) influence technology adoption behavior in general, and mobile adoption in particular. For example, men are nearly twice as likely as women to adopt mobile banking, and age is a negative determinant (Laukkanen, 2016). Higher educated use mobile devices more for utilitarian purposes, while lower educated use mobile devices more for entertainment (Chong et al., 2012). Moreover, research suggests that occupational factors influence mobile use (Okazaki, 2006). The authors hypothesize: H5: Males are more likely than females to use mobile device for B2B digital services. H6: Age has a negative effect on the use mobile device for B2B digital services. H7: Customers with higher education level have a higher likelihood for using mobile device for B2B digital services than customers with lower education level. H8: Occupation has an effect on the use mobile device for B2B digital services. The study tests hypotheses with a data collected among B2B customers of four large Finnish companies, all representing different industry fields. The large sample (n=2306) consists of procurement decision-makers all experienced with using B2B digital services. The sample shows that over 90 percent of the B2B customers are still using a computer (laptop or desktop computer) as their primary access device for digital services in their work. The sample divides between females and males in proportion to 46 and 54 percent respectively. University degree represents a majority with 42 percent, while only 2,7 percent of the respondents have a comprehensive or elementary school education. Over half of the sample represent top management or middle management with 24,6 and 28,4 percent respectively, while 9 percent are entrepreneurs, 21,2 percent represent experts, and 16,7 percent are officials or employess. Mean age of the respondents is 51,6 years, ranging from 18 to 81 years. The study uses logistic regression analysis with backward stepwise method in which the dependent variable is a dichotomous binary variable indicating the respondent’s primary access device for B2B digital services with 0=computer and 1=mobile device. As for the independent variables, the study measures individual’s technology propensity with recently introduced 16-item TRI 2.0 scale from Parasuraman and Colby (2015) using a five-point Likert scale ranging from Strongly disagree=1 to Strongly agree=5. The authors used confirmatory factor analysis to verify the theory-driven factor structure of the TRI 2.0 scale, i.e. optimism, innovativeness, discomfort, and insecurity. The analysis show that the measurement model for the TRI 2.0 scale provides an adequate fit and standardized regression estimates for all measure items exceed 0.60 (p<0.001) except for one item in discomfort (β=0.516) and one item in insecurity (β=0.480). After removing these two items the model shows an excellent fit with χ2=478.033 (df=71; p<0.001), CFI=0.965, RMSEA=0.050. Moreover, discriminant validity is supported, as the square root of the average variance extracted (AVE) value of each construct is greater than the correlations between the constructs (Fornell & Larcker, 1981). In addition, composite reliability values vary from 0.726 to 0.852 supporting convergent validity of the TRI 2.0 factors (Table 1). Thereafter, the factor scores of the latent factors showing sufficient internal consistency were imputed to create composite measures. These composite measures were used as independent variables in the logistic regression model. With regards to socio-demographic variables, age is measured as a continuous variable, while gender, education, and occupation are categorical independent variables in the model. The results of the logistic regression analysis show that innovativeness, insecurity, age, and occupation are statistically significant predictors of mobile device use in B2B services, supporting hypotheses H2, H3, H6, H8. The stepwise analysis procedure removed optimism (p=0.860), education (p=0.789), gender (p=0.339), and discomfort (p=0.159) from the model as they proved to be non-significant predictors of mobile device use. The results indicate that occupation is the strongest predictor for mobile device use in B2B digital services so that the top management has the greatest likelihood as the odds ratios of middle management, experts, and officials/employees are 0.610, 0.282, and 0.178 respectively. This means that, for example, the odds of the top management using mobile device as their primary channel for B2B digital services are 1.64 (1/0.610) times greater than the odds of the middle management, and 5.62 (1/0.178) times greater than the odds of the officials/employees. Interestingly the β-value for the entrepreneurs is positive indicating that their likelihood for mobile device use is even greater than the likelihood of the top management. However, the p-value (0.913) indicates that the difference is not statistically significant. With regards to age of the B2B customer, the results indicate a negative relationship with mobile device use. The odds ratio [Exp(β)=0.979] claims that the odds of a B2B customer to use mobile device as the primary channel for digital services decrease by 2 percent for each additional year of age. Regarding the TRI 2.0 constructs, the results show that innovativeness is a highly significant positive predictor for mobile device use, while perceived insecurity has a negative effect (Table 2). Literature suggests that B2B customers increasingly use mobile devices but yet little is known about those individuals most enthusiastic in using B2B digital services via a mobile device. Thus, the current study attempts to better understand those mobile enthusiasts who among the first have adopted mobile devices as their primary method to access B2B digital services. The results suggest that occupation is the most significant predictor of mobile use among B2B customers, implying that top managers are among the most likely to adopt and use mobile device for business services. Moreover, younger B2B customers use mobile devices more eagerly as the results suggest the likelihood for mobile device use degreases by 2 percent with every added year of age. The results further imply that out of the four TRI 2.0 dimensions innovativeness and insecurity influence in the mobile device use of B2B customers, innovativeness positively and insecurity negatively as the theory proposes. Innovativeness represents individual’s tendency to be a pioneer and thought leader in terms of technology adoption, while insecurity stems from the general skepticism and distrust of technology. These results imply that B2B customers who mainly access B2B digital services via a mobile device are open minded towards the possibilities new technologies can provide for them. Moreover, it appears that those B2B customers still accessing digital services primarily via a computer are more skeptical than mobile users towards technology in general. Compared to the use of mobile devices for individual purposes, business related use is more functional in nature, and thus, mobile devices and technologies must be convenient to use, offer real benefits for example in forms of mobility and portability, and be reliable in order for B2B customers to use them. Interestingly, our results do not support the effects of generally positive attitudes towards technology reflecting optimism, or discomfort of using technologies to influence mobile use among B2B customers. In addition, there are organizational factors (e.g. voluntariness of use) that the authors omit in the current study. These may limit the findings. Mobility will be a key driver in the ongoing digital revolution of marketing and sales. Understanding online behavior of mobile enthusiasts assists B2B marketing and sales leaders to plan and implement more effective mobile marketing strategies. Rogers (1995) has shown that the majority will follow the early adopters, and the adaptation cycle has even shortened during the last years (Downes & Nunes, 2014). Thus, mobile devices are evidently becoming the primary method in accessing B2B digital services.

This research aims at analyzing the role of digital technologies for communication in the personalization of cultural heritage visitors’ experience and the potential of such technologies in valorizing cultural heritage sites. In order to explore such a phenomenon through a pilot study, a conceptual framework has been developed in the attempt to better conceptualize the modern notion of digital cultural heritage. The theoretical foundations are experiential marketing (Schmitt, 1999), authenticity in visitors’ experience (Neuhofer et al., 2014), and engineering studies on successful application of technologies in cultural heritage sites (Sparacino, 2004). From the proposed conceptual framework some relevant insights have emerged. In particular, main findings deal with digital technologies being characterized by three particular kinds of artificial intelligence, namely (a) perceptive intelligence, (b) interactive intelligence, and (c) narrative intelligence. Specifically, perceptive intelligence allows a digital technology to seize visitors’ movements inside the museum (Barrera et al., 2013). Interactive intelligence is the kind of intelligence that permits a digital technology to elaborate visitors’ preferences (Sparacino, 2004). Narrative intelligence, finally, enables a digital technology to communicate with visitors (Karaman et al., 2014). Technologies with such features, then, may potentially stimulate positive feelings and emotions in visitors. Particularly, the storytelling of digital personalization of cultural heritage sites can effectively personalize visitors’ experience and uplifts the visit toward an authentic and unique experience (Frow and Payne, 2007; Sani, 2011). Since these technologies could help visitors in fully understanding their personal interests towards arts and cultural heritage, they can also act as instruments of cultural heritage sites promotion. Specifically, these technologies can suggest visitors’ successive cultural heritage sites and also stimulate visitors to suggests others to visit particular sites due to their positive experience (Sweeney et al., 2012).Finally, this study stresses the importance of digital technologies as instruments of experiential marketing by improving visitors’ experience. Moreover, digital technologies for cultural heritage may be interpreted as a key competitive advantage for cultural heritage sites. In particular, digital technologies may be interpreted as strategic levers in order to stimulate the diffusion of word-of-mouth marketing in cultural heritage.Finally, this study stresses the importance of digital technologies as instruments of experiential marketing by improving visitors’ experience. Moreover, digital technologies for cultural heritage may be interpreted as a key competitive advantage for cultural heritage sites. In particular, digital technologies may be interpreted as strategic levers in order to stimulate the diffusion of word-of-mouth marketing in cultural heritage.

The purpose of this paper is to understand the digital differentiation in social members’ information use via digital devices. Though the attention to the digital differentiation becomes far more increasing, there are only few literatures dealing with quantitative approaches about the digital differentiation. The term ‘digital differentiation’ represents the availability of the information user. It is different from ‘digital divide’ of which the main parameter is accessibility to the information. Once accessibility meets a certain level, availability is considered as a more important factor than accessibility when evaluating the progress of ICT(Information and Communication Technology). We present a model that can describe the digital differentiation phenomenon by using the methodology borrowed from the graph theory, inverse optimization and other established research theory related to digital differentiation. We provide some insights to reduce digital differentiations and therefore our analysis can be used as a guideline for policy maker who desires to mitigate digital differentiations.

With increasing challenges like climate change, companies are confronted with rising expectations from stakeholders, especially consumers. The paper investigates consumers’ reactions towards CSR strategies using a case-study and focus-groups. Results imply that digitally-based strategies at the core of newly found fashion companies are perceived generally positive, although with mixed impressions.

This paper presents how Digital Knowledge Ecosystem such as “Govi Nena” (translates as agriculture intelligence) can be used to provide a more effective and practical solution to eliminate the inefficiencies in agricultural markets and achieve higher productivity and price stability. In order to establish the framework to analyze the system, this paper uses a set of hypothetical scenarios faced by value chain actors based on a review of the literature, established knowledge and recent developing country experiences. The scenario analysis reveals that “Govi Nena” enables farmers to make effective production decisions, deepens the level of value chain integration, and enhances the level of welfare for the society as a whole.

본 연구는 정보사회로의 진입으로 인한 노년층 정보 불평등을 야기시키는 디지털 격 차에 대한 해소방안, 특히 미디어 소외 계층으로 노년층의 스마트 미디어 사용과 디지털 격차에 대한 이슈에 집중하여 노년층에서 발생되고 있는 스마트 미디어 사용과 관 련한 디지털 격차의 유형과 발생 요인을 분석하였다. 연구결과, 노년층 스마트 미디어 디지 털 격차의 유형은 ‘접근격차’, ‘이용격차’ 및 ‘활용격차’로 분류되어졌다. 노년층이 스마트 미 디어 사용에 있어서 발생하는 접근, 이용, 활용 등 3가지 격차에 영향을 미치는 요인을 분 석한 결과, 첫째, 접근격차에는 소득, 학력, 신체적 만족도, 사회적 만족도가 영향력을 가지 고 있었다. 즉, 접근격차의 경우 경제력과 학력이 노년층에게 영향을 미치는 것으로 나타났 고, 추가적으로 신체적 만족도와 사회적 만족도가 높은 노년층이 스마트 미디어 접근이 수 월하다는 것을 발견하였다. 둘째, 이용격차의 경우 설명력을 가지고 있는 변인은 연령, 지 역, 학력, 신체적 만족도 그리고 사회적 만족도로 나타났는데, 연령이 낮을수록, 학력이 높 을수록 스마트 미디어 기본적 이용에 익숙하였으며 중소도시의 노년층이 이용에 덜 불편함 을 느끼는 것으로 나타났다. 셋째, 활용격차에 영향을 미치는 요인은 성별, 연령, 학력, 사 회적 만족도로 나타났고, 남성이며 연령이 낮고 고학력의 노년층이 스마트 미디어의 응용 능력이 높은 것으로 나타났다.

기존 오프라인 음반시장에서 디지털음원시장 의 중심체계로 급변한 국내 음악시장은 대형 유 통사 위주의 기형적인 수익분배구조와 저작권자 의 보호보다는 소비자 후생을 우선시하는 정부의 저작권 정책으로 말미암아, 음악창작자의 저작권 행사를 위한 기초는 아직 체계적으로 정립되지 않은 실정이다. 이에 본 연구에서는 저작권인센 티브의 관점에서 점진적으로 발전해나가는 국내 디지털음원시장의 다양한 저작권제도들을 살펴 보았다. 특히 현행 저작권법 규정에 따른 저작권 사용료율 결정에 있어 승인의 문제점, 집중관리 제도 복수경쟁체제 도입의 필요성, 신탁범위선택 제의 필요성, 홀드백제도의 필요성을 집중분석하 여 이러한 제도가 음원권리자의 인센티브에 어떠 한 영향을 미칠지 연구하고 향후 어떠한 제도로 발전해나감이 바람직할지에 대해 고찰하였다. 본 연구에서 살펴본 바와 같이 저작권 행사의 함의 는 저작권 보호를 통한 음악창작의 다양성 증진 이지, 시장 내 이해관계자들 간의 균형이 아니다. 저작권 행사로 인한 소비자 후생 혹은 시장참여 자들 간의 수익분배는 저작권법적 수단이 아닌 경쟁법적 수단으로 해결을 도모해야 할 것이며, 앞으로 정책당국도 이점을 고려하여 저작권 제도 를 탄력적으로 운영함이 보다 바람직할 것으로 생각된다.

With increasing interest, there have been studies on LiDAR(Light Detection And Ranging)-based DEM(Digital Elevation Model) to acquire three dimensional topographic information. For producing LiDAR DEM with better accuracy, Filtering process is crucial, where only surface reflected LiDAR points are left to construct DEM while non-surface reflected LiDAR points need to be removed from the raw LiDAR data. In particular, the changes of input values for filtering algorithm-constructing parameters are supposed to produce different products. Therefore, this study is aimed to contribute to better understanding the effects of the changes of the levels of GroundFilter Algrothm’s Mean parameter(GFmn) embedded in FUSION software on the accuracy of the LiDAR DEM products, using LiDAR data collected for Hwacheon, Yangju, Gyeongsan and Jangheung watershed experimental area. The effect of GFmn level changes on the products’ accuracy is estimated by measuring and comparing the residuals between the elevations at the same locations of a field and different GFmn level-produced LiDAR DEM sample points. In order to test whether there are any differences among the five GFmn levels; 1, 3, 5, 7 and 9, One-way ANOVA is conducted. In result of One-way ANOVA test, it is found that the change in GFmn level significantly affects the accuracy (F-value: 4.915, p<0.01). After finding significance of the GFmn level effect, Tukey HSD test is also conducted as a Post hoc test for grouping levels by the significant differences. In result, GFmn levels are divided into two subsets ( ‘7, 5, 9, 3’ vs. ‘1’). From the observation of the residuals of each individual level, it is possible to say that LiDAR DEM is generated most accurately when GFmn is given as 7. Through this study, the most desirable parameter value can be suggested to produce filtered LiDAR DEM data which can provide the most accurate elevation information.

현재 아스팔트 포장 분야는 최근의 이상기후(집중호우 및 폭설)로 인하여 수분으로 인한 파손(점착력 약화로 인한 박리 및 포트홀)이 증가하고 있는 실정이다. 이에 국토교통부에서는 『아스팔트 혼합물 생산 및 시공 지침(2014)』의 재료 선정 과정에서 동적수침 시험을 통하여 피복잔류율이 50% 미만이면 박리방 지 재료를 사용토록 규정하고 있다. EN 12697-11에 규정되어있는 동적수침 시험은 골재와 아스팔트 사 이의 박리 저항성 평가하고 이 결과를 통해 아스팔트 혼합물의 수분 저항성을 평가하는 시험법으로, 피복 잔류율 평가는 검사자의 주관적인 육안 평가를 통해 이루어지기 때문에 시험결과의 객관성 및 신뢰성이 부족하다고 할 수 있다. 본 연구에서는 동적수침시험의 객관성 및 신뢰성 향상을 위하여, Digital Image Analysis(DIA)를 도입하였으며, Mesh Analysis를 통하여 DIA의 기준값을 선정하였다. Mesh Analysis 를 위하여 시험 후 건조된 시료를 동일한 조건에서 스캔하여 총 400(20×20) 개의 mesh로 나누어 각 셀 에 대한 피복율을 육안조사를 통하여 총 5 단계의 가중치를 적용하여 계산하였다. DIA는 이미지 파일을 화소(Pixel) 값을 기반으로 처리하는 기법으로, Mesh Analysis에 이용된 25비트 컬러 이미지 파일을 그 레이 이미지(화소값 0(검정색)~255(흰색))로 변환한 후 기준값을 바탕으로 변환된 흑백의 이미지를 이용 하여 피복율을 계산하는 분석방법이다. 보다 객관적인 피복율 비교를 위하여 BBS 시험을 수행하여 얻어 진 점착력을 피복율과 비교하였다. Fig. 1(a)는 피복율과 점착력의 비교결과, Fig. 1(b)는 AP-3를 기준으 로 계산된 피복율과 점착력의 재료에 따른 변동비율 결과를 보여준다. Fig. 1에서 육안평가 결과의 경향은 다른 평가방법과 다른 경향을 나타냈으며 즉, 육안평가는 시료 종 류에 따른 피복율 경향 파악에는 적합한 방법이 될 수는 있으나, 객관적인 피복율 평가에는 미흡한 것으 로 판단된다. 반면에 DIA는 Mesh Analysis 및 BBS 결과와 비교적 유사한 경향을 보였으며, 동적수침시 험의 피복율 평가에 DIA를 적용하는 것은 결과의 신뢰성 및 객관성 측면에서 도움이 될 수 있을 것으로 판단된다.