애널리스트 투자정보의 유용성과 정보비대칭

강상구,김중혁,임찬우 한국재무학회 2007 財務硏究 Vol.20 No.3

오픈소스 모바일 클라우드 서비스: R 기반 공간영상정보 필터링 사례

강상구,이기원 대한공간정보학회 2014 Spatial Information Research Vol.22 No.5

정보통신기술(ICT: Information Communication Technology) 분야의 시장을 주도하는 모바일, 클라우드 컴퓨팅, 빅데이터 등과 같은 트렌드 기술들은 공간정보 분야를 포함한 대부분의 응용분야에 지대한 영향을 미치고 있다. 이중에서 클라우드 컴퓨팅은 비록 우리나라에서는 초기 적용단계 수준이지만 다른 트렌드 기술들 간의 연계를 위한 플랫폼 역할을 담당한다. 특히 모바일과 클라우드 컴퓨팅이 결합된 형태인 모바일 클라우드는 모바일 단말 환경의 제한점들을 보완하고 기존의 모바일 앱에 비하여 더 많은 정보처리기능의 제공이 가능하다는 점에서 주목을 받고 있다. 이번 연구에서는 모바일 클라우드 환경을 OpenStack 및 다양한 오픈소스를 활용하여 구축하고, 이를 플랫폼으로 하여 공간영상정보 필터링 기능을 수행하는 시스템을 시험적으로 설계 및 구현하였다. 한편 공간영상정보 처리는 빅데이터 분석기술로 각광받고 있는 R 환경을 적용하여 필터링 처리를 수행하였다. 이러한 시도는 향후 R을 활용한 공간영상정보 분석 서비스 개발과 다양한 공간정보와 연계되는 새로운 서비스 모델 개발에 적용될 것으로 기대한다. Globally, mobile, cloud computing or big data are the recent marketable key terms. These trend technologies or paradigm in the ICT (Information Communication Technology) fields exert large influence on the most application fields including geo-spatial applications. Among them, cloud computing, though the early stage in Korea now, plays a important role as a platform for other trend technologies uses. Especially, mobile cloud, an integrated platform with mobile device and cloud computing can be considered as a good solution to overcome well known limitations of mobile applications and to provide more information processing functionalities to mobile users. This work is a case study to design and implement the mobile application system for geo-spatial image filtering processing operated on mobile cloud platform built using OpenStack and various open sources. Filtering processing is carried out using R environment, recently being recognized as one of big data analysis technologies. This approach is expected to be an element linking geo-spatial information for new service model development and the geo-spatial analysis service development using R.

Anaphoricity and Accommodation: A Comparison of Too in English and -To in Korean

강상구 한국현대언어학회 2019 언어연구 Vol.35 No.1

Previous studies of -to in Korean have assumed a certain degree of parallelism between the Korean particle and too in English. This paper presents a set of cases involving -to in Korean which stand in clear contrast with the usage of too in English. Following Kripke's observation that too in English requires an antecedent in active contexts, Geurts and van der Sandt and others treat it as an anaphoric presupposition trigger and relate the anaphoricity of the particle with its inability to accommodate its presupposition. We show that -to in Korean cannot be handled by an anaphoric approach because it can either have antecedents in non-active contexts, or no antecedent at all. We propose a non-anaphoric analysis of Korean -to and argue that the lack of anaphoricity of -to allows it to accommodate its presupposition easily, unlike too in English.

Student Performance and Satisfaction in Online vs. Offline English Course: Do Delivery and Exam Format Matter?

강상구 현대영어교육학회 2021 현대영어교육 Vol.22 No.2

The COVID-19 pandemic forced educational institutions around the world to suddenly shift most of their traditional offline classes to the online in 2020. Korean universities were no exception to the trend, and it provided an opportunity to investigate student performance and satisfaction in an online versus offline university English course. In this study, an introductory English linguistics course conducted online in 2020 was compared to the same course conducted offline in 2019. The exams of the online English class probed in this study were the same versions used for the offline class consisting of multiple choice and short answer questions, but were administered in an openbook online format without a proctor. Then, students’ course evaluation results were analyzed to compare their satisfaction in different class delivery formats. Results of online and offline classes revealed that students’ exam results and course evaluation were almost identical, which suggest that the online format of university courses can be as effective as the traditional offline courses for the recent younger generation of online-friendly university students.

A Semantics of Korean Predicates Denoting Spontaneous Vertical Motion

강상구 언어과학회 2019 언어과학연구 Vol.0 No.89

This paper aims to provide compositional analyses of Korean serial verb constructions comprised of a verb of vertical motion and a deictic verb. To identify the roles of verbs of vertical motion, Hay, Kennedy, and Levin's (1999) approach to so-called degree achievement verbs is adopted, where they are defined in terms of “difference value.” Specifically, oluta ‘rise' and naylita ‘fall' denote the differential obtained through vertical motion, and do not encode any internal phases of progression constituting the motion. This characterization is compatible with the variable telicity that the Korean vertical motion verbs exhibit. On the other hand, the deictic verb kata ‘go' is taken to be an atelic process verb. Hence, simplex oluta and naylita denote a difference value resulting from a vertical movement, while serial verb constructions ollakata ‘go up' and naylyekata ‘go down' describe the process as well as the result of the motion.

OTDR 측정값 비교를 이용한 PON 시스템 고장위치 탐색

강상구,김재성,여은모,이봉영,박영일 한국통신학회 2009 한국통신학회 기타 간행물 Vol.2009 No.12

Identification of a Pathogen-Induced Glycine max Transcription Factor GmWRKY1

강상구,박의호,도금숙 한국식물병리학회 2009 Plant Pathology Journal Vol.25 No.4

On screening pathogen-resistant soybean, we identified a WRKY type transcription factor named a Glycine max WRKY1 (GmWRKY1). Expression of GmWRKY1 gene was induced in the soybean sprout by Pseudomonas infection. The GmWRKY1 was expressed in all of the tissues with high levels in stems, leaves and developing seeds. The protein GmWRKY1 contains highly conserved two WRKY DNA-binding domains having two C2-H2 zinc-finger motif (C-X4-5-C-X22-23-H-XH) in its N-terminal and C-terminal amino acid sequences. In electrophoresis mobility shift assay, the GmWRKY1 protein bound specifically to W-box elements in the promoters of defense related genes. These results demonstrated that GmWRKY1 is one of the soybean WRKY family genes and the plant-specific transcription factors for defense processes.

Manner-Result Complementarity and the Serial Verb Construction in Korean

강상구 대한언어학회 2019 언어학 Vol.27 No.2

The serial verb construction in Korean has been studied extensively due to the complexity and diversity of the construction. Accordingly, there hasn't been much agreement on its syntactic or semantic properties. The current paper deals with a particular set of so-called serial verb constructions in Korean, and seek to identify its semantic property by examining the behavior of its constituent verbs. The aim of this paper is two-fold. Firstly, it argues against the proposal that the manner-result complementarity espoused by Levin and Rapaport Hovav hold in Korean. While Levin and Rapaport Hovav have long been claiming that the two semantic components are not lexicalized by a single verb, Beaver and Koontz-Garboden (2017) objected that some verbs are found to entail both manner and result. In line with Beaver and Koontz-Garboden's analysis of climb, I show that some Korean verbs can have both manner and result components. Secondly, in the Korean serial verb construction, I claim that the semantic properties of verbs, such as manner and result, do not play a crucial role. I propose, given two verbs employed in the construction, a structural constraint on the relation between them: namely, the event denoted by the first verb serves as a sufficient condition for a necessary condition for the event denoted by the second verb.

Seeking to Relieve Demotivation for Korean College Students Learning English

강상구 범태평양 응용언어학회 2019 범태평양응용언어학회지 Vol.23 No.2

Demotivation is a relatively new and trending topic in the field of L2 learning. Previous studies have attempted to classify several factors related to demotivation and identify how those factors affect teachers and L2 learners. In the current study, a short questionnaire with items that can be classified into five demotivation factors based on findings from previous research ((a) Learning Contents & Materials, (b) Teachers’ Competence & Teaching Styles, (c) Lack of Intrinsic Motivation, (d) Test Score, and (e) Peer Environment) was completed by 40 students at the end of a college English reading class. One of the goals is to probe how these demotivation factors affect students with different achievement levels. The results demonstrated that three of the factors (Teachers’ Competence & Teaching Styles, Lack of Intrinsic Motivation, and Peer Environment) did not function as high demotivation factors, while the other two (Learning Contents & Materials and Test Score) were demotivating for low achievement level students. These results suggest that factors related to teachers, students, and fellow students were not demotivating while the textbook and scoring system were discouraging students in this course. Another important goal of this study is to propose how demotivation might be relieved in the classroom, especially related to test scores. After all, the ultimate goal of studying demotivation would be to eliminate it in order to maximize learning. With that in mind, it may be time to consider an alternative method of evaluating students in the classroom. Instead of maintaining the current practice of setting a fixed proportion of students who are allowed to receive good grades, an alternative could be introduced. For example, a credential-type acknowledgement based on the competency that the students achieve should be considered.

오픈소스 모바일 클라우드 서비스: R 기반 공간영상정보 필터링 사례

강상구,이기원,Kang, Sanggoo,Lee, Kiwon 한국공간정보학회 2014 한국공간정보학회지 Vol.22 No.5

정보통신기술(ICT: Information Communication Technology) 분야의 시장을 주도하는 모바일, 클라우드 컴퓨팅, 빅데이터 등과 같은 트렌드 기술들은 공간정보 분야를 포함한 대부분의 응용분야에 지대한 영향을 미치고 있다. 이중에서 클라우드 컴퓨팅은 비록 우리나라에서는 초기 적용단계 수준이지만 다른 트렌드 기술들 간의 연계를 위한 플랫폼 역할을 담당한다. 특히 모바일과 클라우드 컴퓨팅이 결합된 형태인 모바일 클라우드는 모바일 단말 환경의 제한점들을 보완하고 기존의 모바일 앱에 비하여 더 많은 정보처리기능의 제공이 가능하다는 점에서 주목을 받고 있다. 이번 연구에서는 모바일 클라우드 환경을 OpenStack 및 다양한 오픈소스를 활용하여 구축하고, 이를 플랫폼으로 하여 공간영상정보 필터링 기능을 수행하는 시스템을 시험적으로 설계 및 구현하였다. 한편 공간영상정보 처리는 빅데이터 분석기술로 각광받고 있는 R 환경을 적용하여 필터링 처리를 수행하였다. 이러한 시도는 향후 R을 활용한 공간영상정보 분석서비스 개발과 다양한 공간정보와 연계되는 새로운 서비스 모델 개발에 적용될 것으로 기대한다. Globally, mobile, cloud computing or big data are the recent marketable key terms. These trend technologies or paradigm in the ICT (Information Communication Technology) fields exert large influence on the most application fields including geo-spatial applications. Among them, cloud computing, though the early stage in Korea now, plays a important role as a platform for other trend technologies uses. Especially, mobile cloud, an integrated platform with mobile device and cloud computing can be considered as a good solution to overcome well known limitations of mobile applications and to provide more information processing functionalities to mobile users. This work is a case study to design and implement the mobile application system for geo-spatial image filtering processing operated on mobile cloud platform built using OpenStack and various open sources. Filtering processing is carried out using R environment, recently being recognized as one of big data analysis technologies. This approach is expected to be an element linking geo-spatial information for new service model development and the geo-spatial analysis service development using R.