• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권4호
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• pp.1832-1853
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• 2018

The personal health record (PHR) system is a promising application that provides precise information and customized services for health care. To flexibly protect sensitive data, attribute-based encryption has been widely applied for PHR access control. However, escrow, exposure and abuse of private keys still hinder its practical application in the PHR system. In this paper, we propose a coordinated ciphertext policy attribute-based access control with user accountability (CCP-ABAC-UA) for the PHR system. Its coordinated mechanism not only effectively prevents the escrow and exposure of private keys but also accurately detects whether key abuse is taking place and identifies the traitor. We claim that CCP-ABAC-UA is a user-side lightweight scheme. Especially for PHR receivers, no bilinear pairing computation is needed to access health records, so the practical mobile PHR system can be realized. By introducing a novel provably secure construction, we prove that it is secure against selectively chosen plaintext attacks. The analysis indicates that CCP-ABAC-UA achieves better performance in terms of security and user-side computational efficiency for a PHR system.

• 교육시설 논문지
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• 제23권6호
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• pp.11-17
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• 2016

The objective of this paper is to introduce a curriculum for BIM design and explores characteristic of BIM Design. In order to get our approach, conducted by means of BIM throughout an actual experiment by elementary school from Architectural programming, preliminary design to design development and construction drawing. The experiment states that curriculum for BIM design requires systemically to be made in the architectural education. And also schools integrate BIM teaching early into in their curriculum. Some schools claim that BIM is often perceived as stumbling block student' creativity on account of its instant building elements. But this is not so; it all depends on how BIM is taught in the architectural education. The results state that students in the architectural school today is required to learn design by means of BIM early in the first year. Also more importantly, in order to advance the BIM design, a curriculum for BIM design is required to diversely open class in the architectural education.

• 한국언어정보학회지:언어와정보
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• 제13권1호
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• pp.77-92
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• 2009

Geis (1973) has provided various properties of the subjects and by + Gerund Phrase (GerP) in English causative constructions. Among them, the two main issues of Geis's analysis are as follows: unlike Lakoff (1965; 1966), the subject of English causative constructions, including causative-inchoative verbs such as liquefy, first of all, should be acts or events, not persons, and the by + GerP in the construction is a complement of the causative verbs. In addition to these issues, Geis has provided various data exhibiting other idiosyncratic properties and proposed some transformational rules such as the Agent Creation Rule and rule orderings to explain them. Against Geis's claim, I propose that English causative verbs require either Proper nouns or GerP subjects and that the by + GerP in the constructions as a Verbal Modifier needs Gerunds, whose understood Affective-agent subject is identical to the subject of causative verbs with respect to the semantic index value. This enables us to solve the two main issues. At the same time, the other properties Geis mentioned also can be easily accounted for in Head-driven Phrase Structure Grammar (HPSG) by positing a few lexical constraints. On this basis, it is shown that given the few lexical constraints and existing grammatical tools in HPSG, the constraint-based analysis proposed here gives a simpler explanation of the properties of English causative constructions provided by Geis without transformational rules and rule orderings.

• 한국언어정보학회지:언어와정보
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• 제13권1호
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• pp.93-125
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• 2009

We examine attributive possessive constructions in Korean in examples like wuli manwula 'my wife' and wuli nala 'my country', where an apparently plural pronoun wuli 'our' is used to convey the singular meaning of 'my.' An example like wuli manwula has been a frequent topic of joke, because it clearly contains the literal sense of 'shared wife.' This type of use and the frequent use of wuli in an exclusive my context led many to claim that these are products of Korean culture which emphasizes groups and group solidarity over individuality, the example wuli manwula being the extreme case. Drawing on the work of Taylor (1989; 1996), Croft (2001; 2003), Haspelmath (1997; 2003), and 윤재학 (2003), we compare the meanings of Korean and English possessive constructions and seek a more linguistically based account for the data. In particular, it is shown that (i) wuli in question is not really the plural form of nay 'my', (ii) the possessive constructions in Korean are more conservative and limited in possible relations than the English counterparts are, and that (iii) these two facts interact to produce the afore-mentioned uses.

• 화약ㆍ발파
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• 제22권3호
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• pp.71-78
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• 2004

국내 재개발 및 건설공사현장에서 암반파쇄 및 굴착 절취 작업의 일환으로 화약을 사용하는 발파공법과 유압 장비를 이용한 무진동 절취 공법, 브레이커를 이용한 파쇄 공법이 대표적으로 사용되고 있다. 유압력을 이용한 무진동 절취공법은 진동, 소음, 비석 등의 공해를 제어하고, 현장에 인접한 보안물건을 보호하며, 기상조건에 제한을 받지 않아 민원을 예방함과 동시에 암 절취 공사의 효율성을 높일 수 있어 암반 파쇄에 따른 여러 분야에서 적용되고 있다. 그러나, 현행 무진동 절취공법은 암반의 특성을 정확하게 파악하지 않고 대부분을 경험에 의존하여 시공패턴을 설정하고, 시공이 행하여지고 있다. 이러한, 각각의 암반 파쇄 공법은 그 적용에 따른 경제적 이익과 시공성, 안전성등을 극대화 할 수 있으나, 반대로 적절하지 못한 공법 적용은 커다란 경제적 손실과 시공성 및 안전성의 저하를 가져오므로 현장 주변 여건과 암반 상황 등 현장 여건을 종합 검토하여 공법 선정이 이루어져야 한다.

• 대한건축학회논문집:구조계
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• 제35권4호
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• pp.193-200
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• 2019

Maintenance services provided to users in buildings are not sufficient simply to provide them, but it is necessary to provide them with a service system that can accurately identify and respond to users' needs. This study analyzed the relationship between user satisfaction with the helpdesk service corresponding to the building claim and the quality of service of the maintenance organization to identify the interaction between the user and the maintenance organization in the building. We then examined whether there were significant differences between the buildings in terms of variables in the helpdesk service that affect the user's satisfaction. It was also presented as a measure of the quality of service of the SERVQUAL tool to assess the potential for building maintenance response strategies. Research shows that each building has a helpdesk service item that is significant in user satisfaction and empathy has emerged in a typical dimension as SERVQUAL dimension.

• 한국건설관리학회논문집
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• 제19권5호
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• pp.111-120
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• 2018

국내 공공 공사는 최근 공기연장 추가간접비 산정에 대한 기준의 불명확성에 따른 논란이 가중되면서 분쟁이 다대하게 발생하고 있다. 또한 연구자들도 이러한 제도의 불명확성 및 분쟁의 발생을 저감시키기 위한 노력으로 여러 제도 및 적정 실비산정을 위한 연구를 진행해 왔으나 아직 사회적 합의를 이끌어낸 기준이 부재한 실정이다. 한편 회계의 인식기준에 따른 분류체계에 대한 연구는 체계적으로 이루어져 발생주의와 현금주의에 대한 개념을 구분하여 정의하였다. 본 연구는 '발생주의'의 개념이 공기연장 추가간접비 산정기준에 적용될 수 있는 가능성을 확인하는 것을 목적으로 하였다. 이에 현장관리비 발생패턴을 분석 결과 현금주의 방식으로는 적정한 산정기준으로 산정하기 어려운 실비가 있는 것으로 확인하였으며, 특히 간접노무비 및 복리후생비와 같이 현장관리비에서 비중이 큰 항목의 경우에는 발생주의 방식의 요구가 더욱 엄정하게 제시되어야 한다는 시사점을 알 수 있었다. 또한 시공사의 청구보고서와 법원의 감정보고서를 조사하였다. 결과는 현재 공기연장 추가간접비 산정 실무는 현금주의 산정방식으로 편중되어있다는 점을 확인하였으며, 발생주의 관점으로부터 실비산정기준을 보완하여야 할 것을 대안으로 제시하였다.

• 한국건설관리학회논문집
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• 제12권6호
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• pp.142-150
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• 2011

공동주택의 가치와 품질, 관리에 대한 요구와 관심이 증가하면서, 2000년대 이래로 입주자에 의한 권리주장이 하자분쟁으로 나타나, 꾸준히 증가하여 왔다. 이에 본 연구에서는 하자소송판례를 통해 균열 쟁점의 비용적 특성을 알아보기 위하여, 하자보수비용 중 77%를 차지하고 있는 균열하자보수비에 대한 세부쟁점을 분석하였다. 또한, 각 세부 쟁점에 대한 하자보수 비용의 구성 및 하자보수방법에 따른 비용의 차이 등을 분석하였다. 그 결과, 허용균열폭의 인정여부에 따라 균열보수비용의 차이가 발생함을 확인할 수 있었고, 보수보강방법을 표면처리, 충전식, 주입식 공법 중 어느 것을 선택하느냐에 따라 비용 차이가 크게 발생함을 알게 되었다. 한편, 도장방법에 따른 하자보수비용의 차이도 상당한 것으로 나타났다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.718-721
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• 2006

본 연구에서는 입주자 사후 만족도 조사를 통해 청약단계에서 분양정보에 대해 분석하고, 적정분양정보를 도출하여 민원성 하자발생 감소방안의 방향을 제시함을 목적으로 한다. 이를 위해 공동주택 입주자를 대상으로 설문조사를 실시하여, 청약단계 분양정보에 대한 입주자 인식을 분석하고, 이에 따른 청약단계에서의 민원성 하자발생 감소방안의 방향으로 다음을 제시하였다. 1) 아파트 분양광고에서 입주자 만족도에 영향을 끼치는 중요항목 기반의 체크리스트를 활용함으로써 체계적으로 관리된 분양정보를 제공, 2) 소비자의 주요분양정보 습득경로인 모델하우스의 분양정보를 제공품목과 장식품목의 게시, 옵션에 대한 자세한 공지 등의 구체적 관리기준방안을 설정, 3) 소비자가 실생활에 필요로 하는 분양정보를 리스트화하여 관리하며 제공.

• Journal of Positioning, Navigation, and Timing
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• 제11권4호
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• pp.305-316
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• 2022

Numerous research revealed a strong association between the ionospheric perturbations and various natural hazards. The ionospheric measurements from Global Navigation Satellite System (GNSS) observations provide the state of electron contents in the ionosphere that contributes to investigate the source events. In this study, two geophysical events occurred on 23 January 2018, the 7.9 Mw earthquake in Alaska and Kusatsu-Shiranesan volcanic eruption in Japan, are examined to characterize the fingerprint of each event in the ionosphere. Firstly, we extracted the Total Electron Content (TEC) from GNSS measurements, then isolated disturbed wave signatures from the TEC measurements that is referred to as a traveling ionospheric disturbance (TID). As TIDs are short-term ionospheric variations, the major trend of GNSS TEC measurements should be properly removed. We applied a natural neighbor interpolation method together with a leave-one-out cross validation technique for detrending. After detrending the TEC, the remaining signals are further enhanced by applying a band-pass filter and TIDs are detected from them. Finally, the detected TIDs are verified as the response of the ionosphere to Kusatsu-Shiranesan volcanic eruption and Gulf of Alaska earthquake which propagated through the ionosphere with an average velocity of 530 m/s and 724 m/s, respectively. In addition, a coherence analysis is conducted to discriminate between the signatures from a volcanic explosion and an earthquake. The analysis reveals the TID waveforms from each single event are highly correlated, while a low correlation is found between the TIDs from the earthquake and explosion. This study supports the claim that different geophysical events induce the distinctive characteristics of TIDs that are detectable by the ionospheric measurements of GNSS.