• Title/Summary/Keyword: Research Information Systems

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An Exploratory Study on Measuring Brand Image from a Network Perspective (네트워크 관점에서 바라본 브랜드 이미지 측정에 대한 탐색적 연구)

  • Jung, Sangyoon;Chang, Jung Ah;Rho, Sangkyu
    • The Journal of Society for e-Business Studies
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    • v.25 no.4
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    • pp.33-60
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    • 2020
  • Along with the rapid advance in internet technologies, ubiquitous mobile device usage has enabled consumers to access real-time information and increased interaction with others through various social media. Consumers can now get information more easily when making purchase decisions, and these changes are affecting the brand landscape. In a digitally connected world, brand image is not communicated to the consumers one-sidedly. Rather, with consumers' growing influence, it is a result of co-creation where consumers have an active role in building brand image. This explains a reality where people no longer purchase products just because they know the brand or because it is a famous brand. However, there has been little discussion on the matter, and many practitioners still rely on the traditional measures of brand indicators. The goal of this research is to present the limitations of traditional definition and measurement of brand and brand image, and propose a more direct and adequate measure that reflects the nature of a connected world. Inspired by the proverb, "A man is known by the company he keeps," the proposed measurement offers insight to the position of brand (or brand image) through co-purchased product networks. This paper suggests a framework of network analysis that clusters brands of cosmetics by the frequency of other products purchased together. This is done by analyzing product networks of a brand extracted from actual purchase data on Amazon.com. This is a more direct approach, compared to past measures where consumers' intention or cognitive aspects are examined through survey. The practical implication is that our research attempts to close the gap between brand indicators and actual purchase behavior. From a theoretical standpoint, this paper extends the traditional conceptualization of brand image to a network perspective that reflects the nature of a digitally connected society.

A Study on the Influence of Affct Based Trust and Cognition Based Trust on Word-of-Mouth Behaviors -Focusing on Friendship Network and Advice Network- (정서기반신뢰와 인지기반신뢰가 구전행동에 미치는 영향 연구 -친교네트워크와 조언네트워크를 중심으로-)

  • Bae, Se-Ha;Kim, Sang-Hee
    • Management & Information Systems Review
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    • v.32 no.5
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    • pp.193-231
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    • 2013
  • As developed IT, Word-of-Mouth(WOM) used varied terms as buzz marketing and viral marketing, and impressed that importance. Despite introduced new marketing tool on managers and professionals, online word-of-mouth including SNS lack of study on social network what based viral in marketing. In social network, patterns of relationship between individuals influence each other individual behaviors. Therefore this research grouped friendship-network and advice-network by characteristics, studied on trust of information source that antecedents of word-of-mouth in network. This study examined that affect- and cognition based trust affect WOM acceptance as WOM behaviors and examined effect of type of product as moderating variable. Additional this literature studied that WOM acceptance affect WOM recommend. To find the Influence of Trust on Word-of-Mouth Behaviors, a survey has done 206 samples(undergraduate students). The results of this study are as following : First, type of trust different friendship network and advice network. Affect-based trust is outstanding in friendship network than in advice network, while cognition-based trust stands out in advice network than another. Second, affect- and cognition based trust positive affect WOM acceptance. Contrary to expectations, what is preconceived trust in network have a similar effect for WOM acceptance regardless of type of trust. Third, WOM acceptance positive affect WOM recommend. Fourth, affect based trust affect WOM acceptance of hedonic product rather than utilitarian product. Upon especially in friendship network terms, affect-based trust has a more effect on WOM acceptance than cognition-based trust. This study has many implications. First, it is important that trust what have an influence WOM acceptance grouped affect- and cognition based trust. Second, it confirmed that trust is antecedents of positive WOM. Third, it is important that network grouped friendship network and advice-network by trust. Fourth, it gave managerial implications that they have to supply WOM through which network by type of product. We This study classified network and trust based on previous study. Then it examined relations between WOM behaviors. Further research could do enrich various things for example various age group, valence of message, quality of information.

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Determinants Affecting Organizational Open Source Software Switch and the Moderating Effects of Managers' Willingness to Secure SW Competitiveness (조직의 오픈소스 소프트웨어 전환에 영향을 미치는 요인과 관리자의 SW 경쟁력 확보의지의 조절효과)

  • Sanghyun Kim;Hyunsun Park
    • Information Systems Review
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    • v.21 no.4
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    • pp.99-123
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    • 2019
  • The software industry is a high value-added industry in the knowledge information age, and its importance is growing as it not only plays a key role in knowledge creation and utilization, but also secures global competitiveness. Among various SW available in today's business environment, Open Source Software(OSS) is rapidly expanding its activity area by not only leading software development, but also integrating with new information technology. Therefore, the purpose of this research is to empirically examine and analyze the effect of factors on the switching behavior to OSS. To accomplish the study's purpose, we suggest the research model based on "Push-Pull-Mooring" framework. This study empirically examines the two categories of antecedents for switching behavior toward OSS. The survey was conducted to employees at various firms that already switched OSS. A total of 268 responses were collected and analyzed by using the structural equational modeling. The results of this study are as follows; first, continuous maintenance cost, vender dependency, functional indifference, and SW resource inefficiency are significantly related to switch to OSS. Second, network-oriented support, testability and strategic flexibility are significantly related to switch to OSS. Finally, the results show that willingness to secures SW competitiveness has a moderating effect on the relationships between push factors and pull factor with exception of improved knowledge, and switch to OSS. The results of this study will contribute to fields related to OSS both theoretically and practically.

Visualization of Geo-spatial Data and Public Data Using Mobile Operating Environment in the eGovernment Standard Framework (전자정부 표준 프레임워크 모바일 실행환경 기반 공공데이터와 공간데이터 시각화)

  • Kim, Kwangseob;Lee, Kiwon
    • Spatial Information Research
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    • v.23 no.1
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    • pp.9-17
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    • 2015
  • Recently new web trends and mobile technologies are expanding and developing so fast. To improve the implementation efficiency of information systems, eGovernment standard framework has been developed and distributed. Recently, eGovernment standard framework for mobile environment was further developed. In addition, many types of public data produced by public organizations supported by government are being opened through public data portal according to Government 3.0 policy. Demands regarding web standards and common framework usages for mobile application development in most business fields dealing with any types of contents are increasing. However, to link those things to geo-spatial data or integrate those with them are an early stage in the geo-spatial application field, compared to other application fields. Based on these backgrounds, a mobile web application system was designed and implemented to present visualization functionalities of public data and geo-spatial data using HTML5 components under mobile operation environment in eGovernment standard framework in this study. It is expected that this system can be applied to develop many mobile application business models, by the further works such as application of core developing environment in eGovernment standard framework, additional functionalities, and high performance to satisfy with user requirements for a certain target application.

Assessment of Regional Seismic Vulnerability in South Korea based on Spatial Analysis of Seismic Hazard Information (공간 분석 기반 지진 위험도 정보를 활용한 우리나라 지진 취약 지역 평가)

  • Lee, Seonyoung;Oh, Seokhoon
    • Economic and Environmental Geology
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    • v.52 no.6
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    • pp.573-586
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    • 2019
  • A seismic hazard map based on spatial analysis of various sources of geologic seismic information was developed and assessed for regional seismic vulnerability in South Korea. The indicators for assessment were selected in consideration of the geological characteristics affecting the seismic damage. Probabilistic seismic hazard and fault information were used to be associated with the seismic activity hazard and bedrock depth related with the seismic damage hazard was also included. Each indicator was constructed of spatial information using GIS and geostatistical techniques such as ordinary kriging, line density mapping and simple kriging with local varying means. Three spatial information constructed were integrated by assigning weights according to the research purpose, data resolution and accuracy. In the case of probabilistic seismic hazard and fault line density, since the data uncertainty was relatively high, only the trend was intended to be reflected firstly. Finally, the seismic activity hazard was calculated and then integrated with the bedrock depth distribution as seismic damage hazard indicator. As a result, a seismic hazard map was proposed based on the analysis of three spatial data and the southeast and northwest regions of South Korea were assessed as having high seismic hazard. The results of this study are expected to be used as basic data for constructing seismic risk management systems to minimize earthquake disasters.

Application Basics of Korean Web Content Accessibility Guidelines 2.1 to Web Visualization of Geo-based Information (한국형 웹 콘텐츠 접근성 지침(KWCAG) 2.1의 공간정보 웹 시각화 적용 기초)

  • Park, Hansaem;Kim, Kwangseob;Lee, Kiwon
    • Journal of Cadastre & Land InformatiX
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    • v.46 no.2
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    • pp.123-135
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    • 2016
  • Recently, geo-based application services such as location-based commerce or personal navigation are recognized as a kind of common tool on smart-phone, and demands with respect to advanced functions of online map editing linked to value-added contents are increasing. However, the disabled people have severe difficulties to equally use those geo-based services, compared to the normal people's uses. Of course, this situation is almost same to other application fields besides geo-based applications. Web accessibility basically means necessary guideline handling web-based contents for equal uses of web services for all people. W3C has developed and distributed a generalized web content accessibility guideline, and Korean web content accessibility guideline version 2.1 referred it. As well, there is a certificate system operated by public agencies. In spite of this situation, geo-based application field is globally on the very early stage for web accessibility. This work first summarized the concept of web accessibility and Korean guideline, and then presented some practical schemes for the further geo-based applications, focused on web visualization of geo-based contents among numerous implementable application services.

Ontology Modeling and Its Application for Managing Control Points (기준점 관리를 위한 온톨로지 모델링과 적용 방안)

  • Cui, Yulan;Hwang, Hyun-Suk;Shin, Seong-Hyun;Suh, Yong-Cheol;Kim, Chang-Soo
    • Journal of the Korean Association of Geographic Information Studies
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    • v.11 no.3
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    • pp.34-42
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    • 2008
  • The control points are important assets of countries which express the most accurate location information that is used in surveying land and other measurements. The location information has played an important role in our daily lives with the development of ubiquitous technology. While many researchers have recently applied new technology like RFID(Radio-Frequency Identification) to the effective management of control points, the research into data retrieval and the interoperability of control point data is still primitive step. Therefore, we construct a data modeling to effectively manage control points using ontology data structure and focus on semantic retrieval method. Our retrieval system can provide the inferred and associated information among data using Prot$\acute{e}$g$\acute{e}$-OWL tool. Our system has advantages in reducing the number of repeated queries by hierarchy searching and improving the searching time by association searching. Also, we propose an effective method to construct retrieval systems being able to edit items of categories and properties without editing the related codes.

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Real-Time Monitoring and Buffering Strategy of Moving Object Databases on Cluster-based Distributed Computing Architecture (클러스터 기반 분산 컴퓨팅 구조에서의 이동 객체 데이타베이스의 실시간 모니터링과 버퍼링 기법)

  • Kim, Sang-Woo;Jeon, Se-Gil;Park, Seung-Yong;Lee, Chung-Woo;Hwang, Jae-Il;Nah, Yun-Mook
    • Journal of Korea Spatial Information System Society
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    • v.8 no.2 s.17
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    • pp.75-89
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    • 2006
  • LBS (Location-Based Service) systems have become a serious subject for research and development since recent rapid advances in wireless communication technologies and position measurement technologies such as global positioning system. The architecture named the GALIS (Gracefully Aging Location Information System) has been suggested which is a cluster-based distributed computing system architecture to overcome performance losses and to efficiently handle a large volume of data, at least millions. The GALIS consists of SLDS and LLDS. The SLDS manages current location information of moving objects and the LLDS manages past location information of moving objects. In this thesis, we implement a monitoring technique for the GALIS prototype, to allow dynamic load balancing among multiple computing nodes by keeping track of the load of each node in real-time during the location data management and spatio-temporal query processing. We also propose a buffering technique which efficiently manages the query results having overlapped query regions to improve query processing performance of the GALIS. The proposed scheme reduces query processing time by eliminating unnecessary query execution on the overlapped regions with the previous queries.

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Low Space Complexity Bit Parallel Multiplier For Irreducible Trinomial over GF($2^n$) (삼항 기약다항식을 이용한 GF($2^n$)의 효율적인 저면적 비트-병렬 곱셈기)

  • Cho, Young-In;Chang, Nam-Su;Kim, Chang-Han;Hong, Seok-Hie
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.45 no.12
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    • pp.29-40
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    • 2008
  • The efficient hardware design of finite field multiplication is an very important research topic for and efficient $f(x)=x^n+x^k+1$ implementation of cryptosystem based on arithmetic in finite field GF($2^n$). We used special generating trinomial to construct a bit-parallel multiplier over finite field with low space complexity. To reduce processing time, The hardware architecture of proposed multiplier is similar with existing Mastrovito multiplier. The complexity of proposed multiplier is depend on the degree of intermediate term $x^k$ and the space complexity of the new multiplier is $2k^2-2k+1$ lower than existing multiplier's. The time complexity of the proposed multiplier is equal to that of existing multiplier or increased to $1T_X(10%{\sim}12.5%$) but space complexity is reduced to maximum 25%.

Albedo Based Fake Face Detection (빛의 반사량 측정을 통한 가면 착용 위변조 얼굴 검출)

  • Kim, Young-Shin;Na, Jae-Keun;Yoon, Sung-Beak;Yi, June-Ho
    • Journal of the Institute of Electronics Engineers of Korea CI
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    • v.45 no.6
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    • pp.139-146
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    • 2008
  • Masked fake face detection using ordinary visible images is a formidable task when the mask is accurately made with special makeup. Considering recent advances in special makeup technology, a reliable solution to detect masked fake faces is essential to the development of a complete face recognition system. This research proposes a method for masked fake face detection that exploits reflectance disparity due to object material and its surface color. First, we have shown that measuring of albedo can be simplified to radiance measurement when a practical face recognition system is deployed under the user-cooperative environment. This enables us to obtain albedo just by grey values in the image captured. Second, we have found that 850nm infrared light is effective to discriminate between facial skin and mask material using reflectance disparity. On the other hand, 650nm visible light is known to be suitable for distinguishing different facial skin colors between ethnic groups. We use a 2D vector consisting of radiance measurements under 850nm and 659nm illumination as a feature vector. Facial skin and mask material show linearly separable distributions in the feature space. By employing FIB, we have achieved 97.8% accuracy in fake face detection. Our method is applicable to faces of different skin colors, and can be easily implemented into commercial face recognition systems.