• Title, Summary, Keyword: domino effects

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Virtual Domino: Interactive Physics Simulation and Experience

  • Shahab, Qonita M.;Kwon, Yong-Moo;Ko, Hee-Dong
    • 한국HCI학회:학술대회논문집
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    • pp.954-959
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    • 2006
  • Virtual Reality simulation enables immersive 3D experience of a Virtual Environment. A simulation-based VE can be used to map real world phenomena into virtual experience. This research studies on the use of Newton's physics law to demonstrate the effects of forces upon object's falling movement, and their effects towards other fallible objects. A reconfigurable simulation enables users to reconfigure the parameters of the objects involved in the simulation, so that they can see different effects from the different configurations, such as force magnitude and distance between objects. This concept is suitable for a classroom learning of physics law. Preliminary implementation is done on a PC with a joystick for 4DOF movement. The graphics is implemented by SGI OpenGL Performer. A middleware called NAVERLib that consists of Performer's modules for easy XML-based configuration is used for management of visualization, network and devices connection, and where the engine of this domino simulation is attached.

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Damage Prediction of Infomation and Communication Facilities for Prolonged Power Outage (장기간 정전사태에 대비한 기반시설-정보통신시설-에서의 피해예측)

  • Song, Chang Young;Cho, In Uh
    • Journal of Korean Society of Disaster and Security
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    • v.5 no.2
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    • pp.81-87
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    • 2012
  • Critical infrastructures (energy, information technology and communications, banking, transportation, public government services, etc.) are now more vital to modern society. Citizens, businesses and governments all rely on an array of interlinked physical and information infrastructures to satisfy their needs and perform their daily operations. At the same time, these infrastructures are becoming increasingly interdependent, such that failure of one of them can often propagate and result in domino effects. Recent dramatic episodes, from 9/11 to the Madrid train bombings, the April 2010 ash cloud the power cuts in Korea in 2011, and the cyber-attacks have highlighted the need for a comprehensive, internationally coordinated policy for the protection of critical infrastructures. For the purposes of this report, we define critical infrastructure as infrastructure whose failure would result in substantial damage to society and/or the economy.

Proposal on the Process and Prognosis of Popular Diseases (질병의 경과와 예후 판별에 대한 제언)

  • Kwon, Ki-Rok
    • Journal of Pharmacopuncture
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    • v.11 no.1
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    • pp.201-209
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    • 2008
  • Objectives : This study was designed to make beneficial proposal for clinical application on some of the most common disorders treated by Oriental medicine by analyzing treatment process and prognosis. Methods : Number of peculiar attributes pertaining to a specific disorder were analyzed and based on those attributes, patterns associated with process and prognosis were interpreted in reference with classical literatures. Results : 1. Factors which can influence the progression and prognosis include time of onset, intensity of symptoms, course of passage, effects of risk factors, condition of the patient's righteous qi(正氣), accuracy of differential diagnosis made by the practitioner, accuracy of treatment methods, and other unexpected external influences. 2. Correlation between the condition of disorders and treatment progression is closely associated with proper treatment procedures and performances. The time of onset and intensity play critical roles in the treatment process and prognosis and showed pattern tendency with mutual interactions. 3. When there is complication of various disorders, it is ideal to give priority to more urgent illness and take care of moderate illness later. If there isn't any correlation between disorders, treat them in the order of acute to chronic disorders. The approach is reversed when disorders are related, treating in the order of most chronic to most acute. 4. In a case of complication of various disorders, depending on the disorder being acute or chronic, intensity, and accuracy of treatments, either a domino effect or gradual fade out of symptoms were witnessed. 5. The concept of "Five Evils Theory" according to Nan Jing(Difficult Classic) is essential in grasping disease progression due to interrelationships between zangfu organs. Conclusions : Predicting of disease process and prognosis for vast array of disorders treated by Oriental medicine is a very difficult task, yet evaluating the disorder's peculiar properties and influential factors resulted in few principles which can be effectively applied into clinical applications.

A novel story on rock slope reliability, by an initiative model that incorporated the harmony of damage, probability and fuzziness

  • Wang, Yajun
    • Geomechanics and Engineering
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    • v.12 no.2
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    • pp.269-294
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    • 2017
  • This study aimed to realize the creation of fuzzy stochastic damage to describe reliability more essentially with the analysis of harmony of damage conception, probability and fuzzy degree of membership in interval [0,1]. Two kinds of fuzzy behaviors of damage development were deduced. Fuzzy stochastic damage models were established based on the fuzzy memberships functional and equivalent normalization theory. Fuzzy stochastic damage finite element method was developed as the approach to reliability simulation. The three-dimensional fuzzy stochastic damage mechanical behaviors of Jianshan mine slope were analyzed and examined based on this approach. The comprehensive results, including the displacement, stress, damage and their stochastic characteristics, indicate consistently that the failure foci of Jianshan mine slope are the slope-cutting areas where, with the maximal failure probability 40%, the hazardous Domino effects will motivate the neighboring rock bodies' sliding activities.

The Impact of the Canada-Korea Free Trade Agreement as Negotiated

  • Ciuriak, Dan;Xiao, Jingliang
    • East Asian Economic Review
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    • v.18 no.4
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    • pp.425-461
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    • 2014
  • This paper analyzes the impact of the Canada-Korea Free Trade Agreement on the basis of the published text and agreed schedule of commitments. We find that the Agreement reinforces existing patterns of comparative advantage between Canada (agriculture and resource-based sectors) and Korea (autos and other industries). The sensitive sectors that held up the deal for years - autos into Canada and beef into Korea - witness major trade gains, but are not unduly disrupted. In both economies, the major output gains otherwise come in non-traded services sectors, driven by income effects. We find that trade diversion effects are quite significant; this lends support for the domino theory of major free trade agreements - since the Korea-EU agreement broke the ice, the pressure has intensified on third parties to re-level playing fields by striking their own deals. The study breaks new ground in modelling services trade by developing policy impacts based on the extent to which the text of the Agreement modifies Korea's and Canada's scores on the OECD's Services Trade Restrictiveness Index and by providing estimates of Mode 3 Services trade impacts. The analysis of the Agreement as negotiated, the present study, in our view, is a step forward in understanding the impact of modern free trade agreements.

Numerical Simulation of Arch-type Submarine Cable Protector under Anchor Collision (아치형 해저 케이블 보호 구조물의 앵커 충돌 수치 시뮬레이션)

  • Woo, Jin-Ho;Na, Won-Bae;Kim, Heon-Tae
    • Journal of Ocean Engineering and Technology
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    • v.23 no.1
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    • pp.96-103
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    • 2009
  • In 2006, Jeju Island in South Korea experienced a crisis, no electricity for three hours anywhere in the entire island. This incident was caused by a domino effect that occurred after one of the submarine power cables connecting the island to Haenam, a coastal city on the mainland, was damaged by an external load, probably from a ship anchor or a steel pile being used in marine farming. This study presents a collision analysis of a new submarine power cable protector called arch type reinforced concrete. For the analysis, a dynamic finite element program, ANSYS AUTODYN, was used to examine the displacement and stress of the submarine power cable protector using different material models (RHT concrete model, Mohr.Coulomb concrete model). In addition, two reinforcing bar spacings, 75 mm and 150 mm, were considered. From the analyses, the effects of the parameters (concrete model and spacing) on the results (displacement and stress) were analyzed, and the relations between the damage and parameters were found.

An Efficient Checkpointing Method for Mobile Hosts via the Software Agent (이동 기기에 적합한 소프트웨어 에이전트 기반의 효율적 체크포인팅 기법)

  • Lim, Sung-Chae
    • The KIPS Transactions:PartA
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    • v.15A no.2
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    • pp.111-118
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    • 2008
  • With the advance in mobile communication systems, the need for distributed applications running on multiple mobile devices also grows gradually. As such applications are subject to H/W failures of the mobile device or communication disruptions, compared to the traditional applications in fixed networks, it is crucial to develop any recovery mechanism suitable for them. For this, checkpointing is widely used to restart interrupted applications. In this paper, we devise an efficient checkpointing method that adopts the software agent executed at the mobile support station. The agent, called the checkpointing agent, is aimed at supporting the concept of rollback-distance (R-distance) that bounds the maximum number of roll-backed local checkpoints. By means of the R-distance, our method can prevent undesirable domino effects and heavy checkpoint overhead, while providing high flexibility in checkpoint creation.

Preliminary Structural Design of Blast Hardened Bulkhead (The 1st Report : Formulation of Simplified Structural Analysis/Design Method) (폭발강화격벽의 초기구조설계에 관한 연구 (제1보 : 간이 구조 해석/설계 기법 정식화))

  • Nho, In Sik;Park, Man-Jae;Cho, Yun Sik
    • Journal of the Society of Naval Architects of Korea
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    • v.55 no.5
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    • pp.371-378
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    • 2018
  • Internal detonation of a warhead inside a compartment of naval vessel can result in serious blast damages including plastic deformation and rupture of the structural members especially bulkhead due to the huge explosive impact pressure, fragments and high temperature flame. To secure watertight integrity and to prevent the domino-type flooding of neighbouring compartments caused by the rupture of bulkheads, it is necessary to develop the structural design technology of Blast Hardened Bulkheads(BHB) which can resist the blast impact pressure of threatening weapons to increase the survivability of naval vessels. This study dealt with the simplified structural response analysis of BHB under impact pressure of confined explosion and aimed to develop the efficient and rational design method of BHB and joint structures which can be applied at initial design stage. The present 1st report dealt with the phenomena of explosive detonation surveying the preceding experimental/theoretical research and the characteristics of time history of blast pressure including the peak value and duration time were examined. And to predict the large plastic deformation behaviors of BHB by the huge blast pressure reasonably, the plastic hinge method including the membrane effects was formulated. It was applied to the simplified structural design equations. The following report will deal with the application and adjustment process of the structural scantling equations to the actual BHB design and verification of validity of them.

Analysis of the key Factors that Influence Emotional Web Design and its Effects on Brand Attitude - focus on Fastfood WebSites - (웹에서의 감성디자인이 브랜드태도에 미치는 효과와 영향요인 분석 - 패스트푸드 사이트를 중심으로 -)

  • 윤다연;이현주
    • Archives of design research
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    • v.17 no.1
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    • pp.153-162
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    • 2004
  • This paper focused on the effect of Kansei design on the web in branding as well as its influence factors. As a key of this research, it classified web users' Kansei into five categories; 1) functional Kansei, 2) sensoryKansei, 3) psychological Kansei, 4) relational Kansei and 5) cultural Kansei, and organized relevant factors. Online surveys were conducted on seven websites of the fast food brands in Korea (Lotteria, Mcdonald, BurgerKing, Popeyes, KFC, Pizza Hut, Domino's) which are targeting 463 male and females in 20s. As a result, an average of 58% responded that they had a positive Kansei experience and could enhanceits brand preference. Of the sensory Kansei, visual design factors were the one that gave the greatest effect on brand preference enhancement. Regarding the functional Kansei satisfaction, such as user convenience and access speed were also one of the most crucial variables for the whole Kansei satisfaction. Moreover, the preference enhancement brought not only a positive effect on its reliability but also its brand image and consumers' purchasing desire. Based on the survey results, the additional FGI (Focus Group Interview) had been conducted and determined \circled1 what kind of major Kansei that users wanted to have satisfied, \circled2 what type of design can give strong Kansei appeal to its users, and \circled3what design factors gave an effect on sensory emotion. In the course of this research, Itried to renew the awareness of the web importance as a major channel in non-mass interactive marketing, and suggest the effect and its possibility of emotional branding through Kansei design in the web as well as design principles of strategic Kansei design.

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