• 한국측량학회지
• /
• 제37권5호
• /
• pp.331-341
• /
• 2019

With the popularity of sensor-rich environments, smartphones have become one of the major platforms for obtaining and sharing information. Since it is difficult to utilize GNSS (Global Navigation Satellite System) inside the area with many buildings, the localization of smartphone in this case is considered as a challenging task. To resolve problem of localization using smartphone a four step image-based localization method and procedure is proposed. To improve the localization accuracy of smartphone datasets, MMS (Mobile Mapping System) and Google Street View were utilized. In our approach first, the searching for candidate matching image is performed by the query image of smartphone's using GNSS observation. Second, the SURF (Speed-Up Robust Features) image matching between the smartphone image and reference dataset is done and the wrong matching points are eliminated. Third, the geometric transformation is performed using the matching points with 2D affine transformation. Finally, the smartphone location and attitude estimation are done by PnP (Perspective-n-Point) algorithm. The location of smartphone GNSS observation is improved from the original 10.204m to a mean error of 3.575m. The attitude estimation is lower than 25 degrees from the 92.4% of the adjsuted images with an average of 5.1973 degrees.

• 산경연구논집
• /
• 제11권2호
• /
• pp.41-48
• /
• 2020

Purpose: This study is to examine the intention of the elderly who live alone in the customized AI speaker for the elderly living alone to improve the quality of life service for the elderly living alone in the smart city environment. Based on the quality of life model of the elderly, this study is applied to the technology acceptance model to investigate the relationship between perceived usefulness and ease of use on the sustained use intention. Research design, data and methodology: Residents in Suwon, Gyeonggi-do, selected as candidate local governments for the Smart City Challenge Project of the Ministry of Land, Infrastructure and Transport in June 2019 to measure the perceived technology acceptance of potential users for the AI technology for the elderly living alone as part of the smart city technology. In order to evaluate the intention of using AI speaker, which is the target system of this study, a video of a chatbot using experience of elderly people living alone was produced. Results: First of all, in order for the elderly living alone to have an attitude to use AI-based speakers, there should be a perceived usefulness of the quality of life of the elderly. However, ease of use did not show any significant causal relationship to attitude toward use. In addition, the attitude toward use weakly influenced the intention to use. In other words, elderly people living alone were not likely to have a significant effect on their attitude toward use. However, feeling that AI speakers are easy to use will help to improve the quality of life, which in turn led to the attitude toward using AI speakers, which could lead to indirect effects. Finally, the perceived usefulness of quality of life was found to have a weak effect on direct use intentions. Conclusions: This study conducted a study on the technology acceptance of service environment to improve the quality of life for the specific user group who live alone in the smart seat environment. In this study, we examined the effects of AI speaker on the elderly living alone to improve the quality of life for the elderly living alone.

• 벤처창업연구
• /
• 제11권3호
• /
• pp.49-61
• /
• 2016

본 연구에서는 예비창업자의 심리적 특성 중 실패에 대한 두려움이 계획된 행동모델의 변수들을 매개로 하여 미래의 창업의도에 미치는 영향을 살펴보았다. 창업의도와 관련된 기존의 선행연구들은 많이 있었으나 주로 창업성공에 영향을 미치는 요인, 창업의도를 높이는 요인을 중심으로 연구가 진행되고 있음을 발견하였다. 이에 본 연구에서는 실패에 대한 두려움이 기업가적 활동을 수행함에 있어 본질적으로 내재되어 있는 요인임에도 불구하고 상대적으로 연구에서는 소홀하게 다루어왔던 것에 주목하여 실패에 대한 두려움을 측정하는 PFAI(Performances Failure Appraisal Inventory) 척도를 사용, 예비창업자의 실패에 대한 두려움이 창업의도에 미치는 관계를 창업에 대한 태도, 주관적 규범, 행동통제 등을 매개로 한 실증적 관계를 규명하였다. 또한 실패에 대한 두려움을 상쇄시키는 역할로써 창업교육의 효과성을 살펴보았다. 이를 위해 서울 시내 대학생들을 중심으로 구조화된 설문지를 이용하여 자료를 수집하였고, 수집된 자료는 AMOS 18.0 프로그램을 사용하여 분석을 실시하였다. 연구결과는 다음과 같다. 첫째, 실패에 대한 두려움은 창업에 대한 태도와 주관적 규범에 각각 부정적인 영향을 미쳤다. 둘째, 창업에 대한 태도와 주관적 규범은 창업의도에 긍정적인 영향을 미치는 것으로 나타나 선행연구와 일치하는 결과를 보였다. 셋째, 실패에 대한 두려움은 창업의도에 직접적인 영향을 미치기보다는 계획된 행동모델의 구성요소인 창업에 대한 태도와 주관적 규범을 매개로 하여 각각 영향을 미침으로써 완전매개 효과를 나타내었다. 넷째, 창업교육이 실패에 대한 두려움과 창업의도와의 관계를 조절하는지 분석한 결과 창업교육을 수강한 집단에게서 실패에 대한 두려움이 창업에 대한 태도와 주관적 규범에 미치는 부정적인 영향이 미약하게 강화되는 것으로 나타났다.

• 한국IT서비스학회지
• /
• 제11권3호
• /
• pp.1-16
• /
• 2012

This paper is aimed to present a fuzzy decision-making approach to deal with disaster recovery priority decision problem in information system. We derive an evaluation approach based on TOPSIS(Technique for Order Performance by Similarity to Ideal Solution), to help disaster recovery priority decision of total information system for port logistics in a fuzzy environment where the vagueness and subjectivity are handled with linguistic terms parameterized by trapezoidal fuzzy numbers. This study applies the fuzzy multi-criteria decision-making method to determine the importance weight of evaluation criteria and to synthesize the ratings of candidate disaster recovery system. Aggregated the evaluators' attitude toward preference, then TOPSIS is employed to obtain a crisp overall performance value for each alternative to make a final decision. This approach is demonstrated with a real case study involving 4 evaluation criteria(system dependence, RTO, loss, alternative business support), 7 information systems for port logistics assessed by 5 evaluators from Maritime Affairs and Port Office.

• International Journal of Computer Science & Network Security
• /
• 제23권9호
• /
• pp.71-76
• /
• 2023

In order to achieve this goal, we consider the following issues: a retrospective analysis of the concepts of "giftedness", "intellectually gifted personality"; the experience of working with gifted youth abroad is analyzed; features of work with gifted student youth are revealed; educational and methodological support and practical work with gifted students are analyzed; an empirical study was conducted to determine the attitude of gifted youth to organizational forms of work with them; developed a scientific circle as a form of work with intellectually gifted student youth. A set of methods is used, in particular: theoretical methods: comparison, analysis, synthesis and generalization; empirical methods: analysis of documentation and results of pedagogical activity, observation.

• 미국학
• /
• 제32권1호
• /
• pp.169-198
• /
• 2009

Unlike the Democratic nomination, Republican nomination struggle has ended with an easy victory of Senator John McCain. This paper claims that the easy victory of McCain should not be interpreted as Republican's return to the median voter, because it masks religious schism and ideological discord among the Republicans. Christian rights were still reluctant to support McCain mostly due to his liberal position on social issues. In addition, the conservatives who request stricter immigration policy presented the mixed feeling toward the Republican candidate. Even though McCain chose the harmony inside the Republican party, rather than sticked to his liberal attitude toward social issues during the campaign for 2008 general election, McCain's defeat is unlikely to result in a rapid change in the Republican party.

• 한국콘텐츠학회논문지
• /
• 제18권11호
• /
• pp.306-316
• /
• 2018

본 연구는 정치인의 종합적 이미지에 대하여 유권자가 가지고 있는 가치와 태도를 밝혀내고 유권자가 갖는 주관성의 구조를 심층적으로 알아보았다. 이러한 작업을 통하여 유권자의 정치적 행동에 미치는 영향력을 설명하는 것이 연구의 목적이다. 본 연구에서는 이재명 경기도지사 인식에 대한 3개의 유형이 도출되었는데, 제1유형(N=4) : 뚜렷한 원칙과 추진력 있는 개혁가, 제2유형[(N=12) : 실행력 있는 실용적 정책가, 제3유형(N=4) : 정치적 야망을 달성하고자 하는 포퓰리스트로 분류되었다. 제1유형은 이재명 경기도지사는 기득권의 장벽을 허물 수 있는 적임자라는 의견을 보였고, 제2유형은 성남시장 재임 중에 보인 행정능력으로 유권자 피부에 와 닿는 실용적 정책을 펼칠 것으로 기대를 가지고 있었으며, 제3유형은 현실성이 떨어지는 주장으로 자신의 정책과 태도만 부각시켜 인지도를 높이고 인기만 끌려는 태도에 우려를 표시했다.

• 디지털융복합연구
• /
• 제10권3호
• /
• pp.283-290
• /
• 2012

본 연구는 텔레비전 연설에서 카메라의 샷크기가 정치후보자에 대한 유권자들의 호감도, 신뢰도, 지지도 등에 영향을 미치는지, 그리고 그 과정에서 수용자의 관여도가 어떤 영향을 미치는지 살펴본 실험연구이다. 본 연구는 2010년 6.2 지방선거, 구청장 후보의 텔레비전 연설 텍스트를 바탕으로 연기자를 출연시켜 샷크기를 달리 한 2가지 유형의 TV 연설 영상물들을 제작, 대학생들로 구성된 2개의 피험자 집단에게 각각 시청하게 한 후, 설문조사를 통해 구청장 후보의 호감도, 신뢰도, 지지도를 측정, 분석하였다. 분석결과 바스트샷 영상에 노출된 피험자들이 웨이스트샷 영상에 노출된 피험자들보다 후보자에 대해 더 큰 호감을 가지고, 더 적극적으로 지지하였다. 그러나 샷크기와 관여도 간의 상호작용 효과는 나타나지 않았다. 연구방법상의 어려움으로 그동안 다루어지지 못했던 TV연설 영상에서 샷크기라는 비언어적 커뮤니케이션 요소가 정치인의 이미지에 미치는 영향을 실험을 통해 검증하였다는 점에서 본 연구의 의의를 찾을 수 있을 것이다.

• 산경연구논집
• /
• 제7권4호
• /
• pp.11-16
• /
• 2016

Purpose - There are numerous theories for retail trade area analysis which are designed to select candidate locations for new stores. In this study, comparative analysis on the characteristics from those of the theories are shown, and the explanation for the power in consumers' store-choice behaviors and their limitations are examined. Also, plans for improving commercial sphere analysis are explored. Research design, data, and methodology - This study is based on literature reviews with normative research methodology. Among many researches regarding the analysis on the location and commercial sphere for launching a new store, researches relying on statistics are excluded in this study since they belong to the marketing research area,. Results - In the Law of retail gravitation, Huff's model multinomial logit model and etc. are mutual complementary mathematical techniques for analyzing commercial spheres and each of them has its own characteristics. These theories rely on the same hypothesis in which consumers are all believed to be behaving rationally under a similar behavioral system. However, the trial in explaining or estimating behavior of choosing a store with only a select size of the population that is objectively estimated by some major properties has limits in its credibility. Conclusion - Research on consumer's spatial behaviors can be fully illustrative and explainable when it has both quantitative approaches such as 'law of retail gravitation', 'logit model' and etc., and qualitative approaches like consumer's 'cognitive structure', 'learning status', 'image formation', 'attitude' and etc.

• 대한조선학회논문집
• /
• 제42권6호
• /
• pp.566-574
• /
• 2005

Reduction of a ship's rolling is the most important performance requirement for improving the safety of the crew on board and preventing damage to cargos as well as improving the comfort of the ride. A mass driving anti-rolling system (MO-ARS) might be one candidate of several systems against the ship's rolling. As the movable range of the mass on the ship is finite, the control system must include restriction on the mass position to protect the device and the ship. This restriction usually causes windup phenomenon and control performance is deteriorated seriously. Two control algorithms, anti-windup control and saturated sliding mode control, are studied in this paper. Control performance and robustness problem are checked out by numerical simulations.