• Structural Engineering and Mechanics
• /
• v.17 no.2
• /
• pp.245-266
• /
• 2004

Incremental launching method is one of the highly competitive techniques for construction of concrete bridges. It avoids costly and time consuming form work and centralizes all construction activities in a small casting yard, thus saving in cost and time against conventional bridge construction. From the quality point of view, it eliminates the uncertainty of monolithic behaviour by allowing high repetitiveness and industrial environment. But, from analysis and design point of view, the most characteristic aspect of incrementally launched bridges is that, it has to absorb the stresses associated with the temporary supports that are gradually taken on by the deck during its launch. So, it is necessary to analyse the structure for each step of launching which is a tedious and time consuming process. Effect of support settlements or temperature variation makes the problem more complex. By using transfer matrix method, this problem can be handled efficiently with minimal computational effort. This paper gives insight into method of analysis, formulation for optimization of the structural system, effect of support settlement and temperature gradient, during construction, on the stress state of incrementally launched bridges.

• Journal of English Language & Literature
• /
• v.56 no.1
• /
• pp.47-64
• /
• 2010

It is unfair that environmental pragmatism has been regarded as a mouthpiece for industrial expediency and business boosterism. John Dewey's radical pragmatism known as 'Instrumentalism' has provoked ecological fundamentalists' criticism more vehemently than any other pragmatic philosophies. However, most of the presumptive misunderstandings of such critics as Holmes Rolston, J. Baird Calliott, Erich Katz, C. A. Bowers and many others come from their limited or reduced reading of Deweyan pragmatism. The following three aspects of Deweyan pragmatism can work out in opening up a dialogical space with those eco-centrist thinkers mentioned above. First, the concept of Dewey's 'primary experience' can articulate the foundationalist view of nature, which is often found in aboriginal cultures. Second, as Andrew Light points out, ecological essentialism can share its metaphilosophical position with the pragmatist epistemology. While Anthony Weston pursues pluralism, admitting that the foundationalism might be one of the efficient approaches to nature, Eric Katz is also clearly attracted to the metaphilosophical element in Weston's argument that anyone who attempts to claim the 'inherent value' of non-human nature never possibly avoids a pitfall of anthropomorphism. Lastly, in a more comprehensive perspective, Dewey's pragmatism shows a philosophical complexity, what Larry A. Hickman calls 'post-postmodernism.' a dynamic interaction between modernism and postmodernism. Significantly enough, the environmental version of this complexity can procure a meeting ground between foundationalist ecology and the pragmatic view of nature.

• SUVANNABHUMI
• /
• v.11 no.1
• /
• pp.7-40
• /
• 2019

The essay reflects on the work of Adrian Lapian (1929-2011), an Indonesian scholar of archipelagic/maritime Southeast Asia and its "sea people-sea pirates-sea kings." The essay suggests that Lapian's writing mirrors navigation at sea, and the constant re-orientation and ever-changing, multiple points of view that are part of it. This is contrasted to Foucault's "panopticism" and academic desire for discipline. Taking cue from Lapian's writing and from the present author's experience of seafaring, the essay envisions Southeast Asian studies as a fluid, precarious, disorienting, even nauseating multiplicity of experiences, dialogues, and moving, unstable, and uncertain points of view; a style of learning that is less (neo)colonial, more humble, and closer to experiences in the region, than super-scholarship that imposes universalizing, panoptic standards, theories and methods (typically self-styled as "new") that reduce the particular into a specimen of the general, a cell in the Panopticon. The essay concludes with reflections on certain learning initiatives/traditions at the National University of Singapore, including seafaring voyages-experiences, encounters, and conversations that make students and scholars alike to move and see differently, to be touched, blown away, rocked, swayed, disoriented, swallowed, transformed, and feel anew their places, roots, bonds, distances, fears, blindness, powerlessness.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.15 no.2
• /
• pp.169-176
• /
• 2012

GPS(Global Positioning System) is widely used for the position estimation of an aerial vehicle. However, GPS may not be available due to hostile jamming or strategic reasons. A vision-based position estimation method can be effective if GPS does not work properly. In mountainous areas without any man-made landmark, a horizon is a good feature for estimating the position of an aerial vehicle. In this paper, we present a new method to estimate the position of the aerial vehicle equipped with a forward-looking infrared camera. It is assumed that INS(Inertial Navigation System) provides the attitudes of an aerial vehicle and a camera. The horizon extracted from an infrared image is compared with horizon models generated from DEM(Digital Elevation Map). Because of a narrow field of view of the camera, two images with a different camera view are utilized to estimate a position. The algorithm is tested using real infrared images acquired on the ground. The experimental results show that the method can be used for estimating the position of an aerial vehicle.

• English & American cultural studies
• /
• v.18 no.1
• /
• pp.93-120
• /
• 2018

Constance Fenimore Woolson is among those whom scholars have for long been trying to rediscover and add to the list of representative American writers. The primary methodology has been regionalism, based on the fact that most of her work portrays remote, exotic regions in and out of America. Still, Woolson remains obscure to general readers as well as literary critics outside a small circle of her scholarship. This essay attributes that obscurity to Woolson scholars' blind reliance on regionalism's nationalistic assumption in reading Woolson's multifaceted writing, and proposes to explore her nationally and regionally displacing view of the rigidly stereotypical and ideologically biased binary opposition between the center and the margin in postbellum America. The essay takes as an example the only story by Woolson that has never been reprinted or anthologized until very recently, "In Sloane Street," and examines why it resists the scholarly endeavor to regional categorization. The examination especially focuses on how the story exposes the Americanizing conceptualization of the region and its limits. The essay concludes with an attention to the story's ending where Woolson abruptly yet deliberately introduces a form of almanac as the main character Gertrude's mode of daily record. The attention to that uniquely hybrid genre in the American literary tradition, which encompasses the public and the private, the universal and the local, sheds light on Woolson's authorial intention to deconstruct the Manichean view of literary regionalism.

• Journal of Labour Economics
• /
• v.37 no.4
• /
• pp.89-112
• /
• 2014

This paper characterizes an optimal combination of grant and income-contingent loans (ICL) from efficiency and equity points of view as a government subsidy program for higher-education. In particular, we show that it is always desirable to introduce ICL for students regardless of their household incomes, and also provide arguments for the superiority of tax-financing system to loans with risk-premium as a financing mechanism of ICL. From policy point of view, this paper suggests a need for the extended coverage of our ICL system, while justifying its current tax-financing system.

• Korean Management Science Review
• /
• v.21 no.2
• /
• pp.61-77
• /
• 2004

As various methodologies for business process analysis and design have been conducted in many organizations by their own ways, those methodologies are not compatible each other. In order to reduce the cost of analysis for organizations. some mapping methods between different methodologies need to be developed. UMM(UN/CEFACT Modeling Methodology) that has an object-oriented point of view. can overcome the limits of existing bottom-up approaches and make it reasonable. It also simplifies the business and administrative procedures. IDEF( Integrated Definition Language) with a structural point of view that has been widely used as a system analysis and design method, needs to be mapped to UMM in order to reuse the existing IDEF models. In this study, we propose a guideline that deals with procedures of utilizing IDEF models from which we want to derive the UMM models for developing an electronic commerce system including electronic documents exchange. By comparing IDEF and UMM, we analyze the differences between those two methodologies. Based on these differences. we suggest the basic strategies for mapping method from IDEF to UMM. We also propose a mapping guideline that can make UMM results from the modeling results of IDEF. We can take an advantage of the existing IDEF analysis design results when we adopt UMM methodology for electronic business system. Many analysts who are familiar with the IDEF methodology can develop UMM work-flow by utilizing their existing results and skills.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.18 no.4
• /
• pp.405-414
• /
• 2000

A new generation of commercial satellites like IKONOS, SPOT-5 and OrbView-3,4 will have improved features, especially an higher geometric resolution with a better dynamic radiometric range. In addition high precision orbital position and attitude data will be provided by the on-board GPS receivers, IMU(Inertial Measurement Units) and star trackers. This additional information allows for reducing the number of ground control points. Furthermore this information enables direct georeferencing of imagery without ground control points. In our work mathematical models for calculating the satellite orbital parameters of SPOT-3 and KOMPSAT-1 were developed and can be easily extended to process images from other high resolution imaging systems as they become available.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.12 no.10
• /
• pp.4348-4353
• /
• 2011

This paper is based on the Cognitive Linguistics point of view on metaphor. Metaphors are not a matter of language use or rhetorics but of a conceptual frame, where thoughts work. The conceptual frames can highlight one aspect affecting our lives while hiding the other aspect of the facts. Politicians use metaphors to persuade people and justify their political decisions. Lakoff argues that the Republicans in the U.S. have their own conceptual framework based on the 'strict father model' of the conservatives, which can be found in important political speeches. Political metaphors supporting this view are found in the 'Attack on Iraq Speech' by G. H. Bush in 1991 and 'Operation Iraqi Freedom Address' by G. W. Bush in 2003.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2008.11a
• /
• pp.185-188
• /
• 2008

과학 데이터는 대부분 과학 시뮬레이션의 결과로 얻게 되며, 사람이 직관적으로 이해하기 어려운 숫자의 나열인 경우가 많다. 이런 수치 데이터를 가시화하면 보다 쉽게 이해해서 분석할 수 있는 형태가 갖춰지게 되며, 가시화 환경을 VR 환경으로 옮기면 사용자와 상호작용하면서 사용자가 원하는 형태로 데이터를 가시화하는 것이 가능할 뿐만 아니라 몰입형 환경 덕분에 데이터에 대한 이해도도 높일 수 있다. 그러나 VR 환경의 시스템적 한계와 다양한 가시화 알고리즘에 대한 필요성 때문에 VR 환경에서 과학 데이터를 가시화하는 데는 한계가 있다. 본 논문에서는 VR 환경에서 과학데이터를 가시화하는 프레임워크를 제안한다. 이 프레임워크는 VTK에 기반을 둔 애플리케이션인 ParaView를 활용함으로써 과학데이터를 가시화하는 알고리즘을 제공하며, VTK와 CAVELib을 기반으로 하는 VtkCave를 활용해서 시스템에 맞는 VR 인터페이스를 제공한다. 향후에는 이 프레임워크에 보다 다양한 인터페이스와 가시화 기법을 더해서 풍부한 서비스를 제공할 수 있도록 할 예정이다.