• Title/Summary/Keyword: MIS Research

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An Empirical Study of MIS CSF's for Small & Medium Business In Korea (우리 나라 중소기업 정보시스템의 성공요인에 대한 실증분석)

  • Ahn Jae-Young
    • Management & Information Systems Review
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    • v.3
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    • pp.399-417
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    • 1999
  • The purpose of this paper id to study the factors influencing MIS user satisfaction. For this purpose. I have reviewed the results of past studies on the performance factor of MIS, and introduced a new model associated with small & Medium Business. On the basis of this model, I have hypothesized that the following variables influence user satisfaction : (gender, age), individual characteristics(user attitude, training for user), managerial characteristic(top management involvement, organizational support) and task characteristics(task structure). There were 195 participants surveyed using questionnaires from 25 different small & medium Business in Pusan. The research model and associated hypotheses were tested by following statistical techniques: reliability test, regression, t-test and ANOVA. The findings of this study are follows; 1. It was found that gender and age are not correlated user satisfaction. 2. Among individual characteristics, only user attitude influence user satisfaction significantly. 3. While organizational supports influence positively user satisfaction, top management involvement do not influence it. 4. Task structure is highly correlated with user satisfaction. In spite of many factors affecting MIS success, this study did not consider all variables affect on user satisfaction. We need integrated model including more various factors.

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A Meta Analysis of Using Structural Equation Model on the Korean MIS Research (국내 MIS 연구에서 구조방정식모형 활용에 관한 메타분석)

  • Kim, Jong-Ki;Jeon, Jin-Hwan
    • Asia pacific journal of information systems
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    • v.19 no.4
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    • pp.47-75
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    • 2009
  • Recently, researches on Management Information Systems (MIS) have laid out theoretical foundation and academic paradigms by introducing diverse theories, themes, and methodologies. Especially, academic paradigms of MIS encourage a user-friendly approach by developing the technologies from the users' perspectives, which reflects the existence of strong causal relationships between information systems and user's behavior. As in other areas in social science the use of structural equation modeling (SEM) has rapidly increased in recent years especially in the MIS area. The SEM technique is important because it provides powerful ways to address key IS research problems. It also has a unique ability to simultaneously examine a series of casual relationships while analyzing multiple independent and dependent variables all at the same time. In spite of providing many benefits to the MIS researchers, there are some potential pitfalls with the analytical technique. The research objective of this study is to provide some guidelines for an appropriate use of SEM based on the assessment of current practice of using SEM in the MIS research. This study focuses on several statistical issues related to the use of SEM in the MIS research. Selected articles are assessed in three parts through the meta analysis. The first part is related to the initial specification of theoretical model of interest. The second is about data screening prior to model estimation and testing. And the last part concerns estimation and testing of theoretical models based on empirical data. This study reviewed the use of SEM in 164 empirical research articles published in four major MIS journals in Korea (APJIS, ISR, JIS and JITAM) from 1991 to 2007. APJIS, ISR, JIS and JITAM accounted for 73, 17, 58, and 16 of the total number of applications, respectively. The number of published applications has been increased over time. LISREL was the most frequently used SEM software among MIS researchers (97 studies (59.15%)), followed by AMOS (45 studies (27.44%)). In the first part, regarding issues related to the initial specification of theoretical model of interest, all of the studies have used cross-sectional data. The studies that use cross-sectional data may be able to better explain their structural model as a set of relationships. Most of SEM studies, meanwhile, have employed. confirmatory-type analysis (146 articles (89%)). For the model specification issue about model formulation, 159 (96.9%) of the studies were the full structural equation model. For only 5 researches, SEM was used for the measurement model with a set of observed variables. The average sample size for all models was 365.41, with some models retaining a sample as small as 50 and as large as 500. The second part of the issue is related to data screening prior to model estimation and testing. Data screening is important for researchers particularly in defining how they deal with missing values. Overall, discussion of data screening was reported in 118 (71.95%) of the studies while there was no study discussing evidence of multivariate normality for the models. On the third part, issues related to the estimation and testing of theoretical models on empirical data, assessing model fit is one of most important issues because it provides adequate statistical power for research models. There were multiple fit indices used in the SEM applications. The test was reported in the most of studies (146 (89%)), whereas normed-test was reported less frequently (65 studies (39.64%)). It is important that normed- of 3 or lower is required for adequate model fit. The most popular model fit indices were GFI (109 (66.46%)), AGFI (84 (51.22%)), NFI (44 (47.56%)), RMR (42 (25.61%)), CFI (59 (35.98%)), RMSEA (62 (37.80)), and NNFI (48 (29.27%)). Regarding the test of construct validity, convergent validity has been examined in 109 studies (66.46%) and discriminant validity in 98 (59.76%). 81 studies (49.39%) have reported the average variance extracted (AVE). However, there was little discussion of direct (47 (28.66%)), indirect, and total effect in the SEM models. Based on these findings, we suggest general guidelines for the use of SEM and propose some recommendations on concerning issues of latent variables models, raw data, sample size, data screening, reporting parameter estimated, model fit statistics, multivariate normality, confirmatory factor analysis, reliabilities and the decomposition of effects.

Morphological Correlation and Chronology of Lower Terrace Formations of Southeastern Coast of Korea (한국 남동해안 저위단구 퇴적층의 지형대비 및 형성시기 고찰)

  • Choi, Weon-Hack;Kim, Ju-Yong
    • Proceedings of the Korean Quaternary Association Conference
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    • 2005.10a
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    • pp.48-54
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    • 2005
  • Terrace morphology is so conspicuous in the south eastern coastal areas. Coastal terraces can be divided into 5 main surfaces, including beach and coastal alluvial plain(AP, $4{\sim}5m$), Low Terrace(LT, 8 $^{\sim}$ 25m), Middle Terrace(MT, 36 $^{\sim}$ 55m), High Terrace(HT, 63 $^{\sim}$ 86m) and upper High Terrace(uHT, above 90m). Among them Lower Terrace Formation is distributed between 8m and 20m in altitude. Both Tephra deposited of LT2 formation and OSL datings of sand layers in LT 2 and LT 3 Formations support the age of the LT 2 formation is MIS 5d or 5e, most probably 5e. The age of LT 3 is interpreted MIS 5a, based on tephra production in organic mud layers and OSL dating of sand deposits just above the beach pebbles of the LT 3. Particularly the transgression, possibly equivalent to the well-known Monastirrian episode in the Mediterranean Sea.

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Re-interpretation of Jeju Oreum image using artificial intelligence (인공지능(AI)을 활용한 제주 오름 이미지의 재해석)

  • Kang, Myo-seon;Yang, So-hee;Park, Jin-woo;Jwa, Dong-hun;Kim, Mincheol
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2022.05a
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    • pp.252-254
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    • 2022
  • The purpose of this study is to show the works of Jeju artists and ways to contribute to the Jeju tourism industry, with the research background in that it has recently continued to accept the works of Jeju contemporary artists and draws active works. As a measure to achieve this research purpose, the Deep Dream Generator software was judged to be an effective method for promoting this study. As a specific research process, we will use the Deep Dream Generator to synthesize each of the works of Jeju artists and works of famous foreign artists provided by Deep Dream Generators with their own photos of Jeju Oreum and display the results, and attempt to reinterpret Jeju Oreum using artificial intelligence. In addition, it is expected to revitalize Jeju's art works and tourism by seeking ways to use the results in Jeju tourism products.

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Improvement of Electrical Properties of Diamond MIS (Metal-Insulator- Semiconductor) Interface by Gate Insulator and Application to Metal-Insulator- Semiconductor Field Effect Transistors (게이트 절연막에 의한 다이아몬드 MIS (Metal-Insulator-Semiconductor) 계면의 전기적 특성 개선과 전계효과 트랜지스터에의 응용)

  • Yun, Young
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.14 no.6
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    • pp.648-654
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    • 2003
  • Diamond MIS(Metal-Insulator-Semiconductor) diodes and MISFETs(Metal-Insulator-Semiconductor Field Effect Transistors) were fabricated by employing various fluorides as gate insulator, and their electrical properties were closely investigated by means of C-V measurements. The A1/BaF$_2$/diamond MIS structure exhibited outstanding electrical properties. The MIS diode showed a very low surface state density of ∼10$\^$10//$\textrm{cm}^2$ eV near the valence band edge, and the observed effective mobility(${\mu}$$\_$eff/) of the MISFET was 400 $\textrm{cm}^2$/Vs, which is the highest value obtained until now in the diamond FET. From the chemiphysical point of view, the above result might be explained by the reduction of adsorbed-oxygen on the diamond surface via strong chemical reaction by the constituent Ba atom in the insulator during the film deposition(Oxygen-Gettering Effect).

Research for Acceptabilities and Utilization of the Located-Based Service for Handheld-phone Users (휴대폰 사용자의 위치 기반 서비스(LBS) 수용 요인과 적용 방안에 대한 연구)

  • Dang K.;Shin S.;Lim J.;Cho S.;Whang J.
    • Proceedings of the Korea Society for Industrial Systems Conference
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    • 2006.05a
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    • pp.291-305
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    • 2006
  • 본 연구는 국내 모바일 컨텐츠 비즈니스에서 향후 킬러 애플리케이션으로 예상되고 있는 위치기반서비스(이하 LBS)의 적용 가능성 분석을 통한 발전 방향에 관한 연구이다. 국내 모바일 컨텐츠 산업은 그 성장성, 국내 타 산업 환경과의 적합성, 향후 다양한 분야로의 응용을 통한 수익 창출의 측면에서 매우 중요한 의미를 가지고 있다. 그러나 지난 수년간 이미 내수 가입자의 시장이 포화되었고 또한 사업방향이 단순히 게임 컨텐츠에 집중됨으로써 발전가능성에 적합하지 않는 취약한 구조적 문제를 갖고 있다. 향후 모바일 컨텐츠 비즈니스가 미래 성장 동력으로 변모하기 위해서는 사용자와 모바일 기기 관점에서 현재 성장을 억제하고 있는 시장의 환경적 요인 분석과 공급주체 측면에서의 연구를 통해 새로운 발전 모델을 구축하는 것이 시급하다. 따라서 본 연구는 국내 모바일 컨텐츠 비즈니스가 가진 현재의 한계점을 주목하여 그 한계를 뛰어넘기 위한 방법으로 LBS를 제안하고자 한다. 우선 본 연구제안의 근거로서 기존 모바일 관련 연구들을 바탕으로 1차 검증을 거친 후, LBS 컨텐츠와 관련한 연구 모델을 설정하고 설문조사를 수행하여 실증적으로 분석하였다. 본 연구에서 얻어진 데이터 분석을 통해 향후 비즈니스 모델의 핵심인 기능 컨버젼스 휴대폰과 LBS 활용 서비스를 중심으로 한 컨텐츠 컨버젼스를 효과적으로 융합한 모바일 컨텐츠 비즈니스의 향후 성장가능성에 대해 제시하였다.

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A Study on the Characteristics of IT Innovations (정보기술 혁신 특성에 관한 연구)

  • 백상용;박경수
    • Journal of Information Technology Application
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    • v.3 no.3
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    • pp.71-90
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    • 2001
  • Research on innovation has a long tradition from various disciplines. MIS research has also been interested in the innovation adoption because IS development and implementation can be regarded as an innovation process. To deal with IT innovations, MIS research adopted existing innovation(diffusion) theories which have been developed on general innovation phenomena. However, the MIS innovation research revealed that there exist some limitations in applying the innovation theories to IT innovations and proposed that research on IT innovations should reflect the unique characteristics of IT. The purpose of this study is twofold; first, to synthesize the past research and propose the uniqueness of IT innovations and second, to survey the Perceptions of managers on If innovations. Three unique characteristics of IT innovations are derived from the past research which are (1) knowledge barriers, (2) increasing returns, (3) organizational decision. Data collected from 68 Korean managers showed that the perceptions of managers support the uniqueness of IT innovations. Some recommendations to facilitate IT innovations are discussed and further research directions are suggested.

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The effect of I-V characteristic and hot-spot by solar cell and interconnection circuit in PV module (PV모듈에서 태양전지와 Interconnect회로의 구성이 I-V특성과 Hot Spot에 미치는 영향)

  • Lee, Jin-Seob;Kang, Gi-Hwan;Park, Chi-Hong;Yu, Gwon-Jong;Ahn, Hyung-Gun;Han, Deuk-Young
    • 한국태양에너지학회:학술대회논문집
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    • 2008.04a
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    • pp.241-246
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    • 2008
  • In this paper, we analyze the I-V curve and hot-spot phenomenon caused by solar cells' serial and parallel connected circuit. The mis-match loss of parallel interconnection with low Isc string decrease lower than serially interconnected one and temperature caused by hot-spot does. Also, mis-match loss of parallel interconnection with low Voc string increase more than serially interconnected one. The string having low Voc happened hot-spot phenomenon when open circuit. The bad solar cell in string gives revere bias to good solar cell and make hot-spot phenomenon. If we consider the mis-match loss, when designing PV module and array. the efficiency of PV system might increase.

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Modeling of pentacene MIS capacitors with admittance measurements and the effects of dispersive charge transport

  • Jung, Keum-Dong;Lee, Cheon-An;Park, Dong-Wook;Park, Byung-Gook;Shin, Hyung-Cheol;Lee, Jong-Duk
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.67-69
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    • 2006
  • Capacitance and loss values of pentacene MIS capacitors with different thicknesses are measured as a function of frequency for the modeling of the devices. The equivalent circuit for the ideal MIS capacitor is adopted to model the obtained admittance, so the values of $C_i,\;C_d,\;C_b$, and $R_b$ are determined for each pentacene thickness. In the loss curve, broader loss peaks are observed in measurement than the modeling results regardless of the pentacene thickness. By considering the effects of dispersive charge transport in bulk semiconductor, more accurate modeling results are obtained.

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GETTING IT ALL TOGETHER--MIS, MANAGEMENT SCIENCE AND CORPORATE MODELS

  • Mellichamp, Joseph M.;Smith, Palmer W.
    • Journal of the Korean Operations Research and Management Science Society
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    • v.3 no.2
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    • pp.29-39
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    • 1978
  • Scarcely a month passes that another paper lamenting the short-comings of either Management Information Systems (MIS) or Management Science (MS) doesn't appear in the literature. It is unfortunate that these disciplines which have been universally commended to management and which obviously have great potential, have fallen into difficult times. It is likewise unfortunate that another promising construct--the corporate model--will likely meet a similar fater unless the present course of events is altered.

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