• Title/Summary/Keyword: anticipating

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THE FUKUSHIMA DISASTER - SYSTEMIC FAILURES AS THE LACK OF RESILIENCE

  • Hollnagel, Erik;Fujita, Yushi
    • Nuclear Engineering and Technology
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    • v.45 no.1
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    • pp.13-20
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    • 2013
  • This paper looks at the Fukushima disaster from the perspective of resilience engineering, which replaces a search for causes with an understanding of how the system failed in its performance. Referring to the four resilience abilities of responding, monitoring, learning, and anticipating, the paper focuses on how inadequate engineering anticipation or risk assessment during the design, in combination with inadequate response capabilities, precipitated the disaster. One lesson is that systems such as nuclear power plants are complicated, not only in how they function during everyday or exceptional conditions, but also during their whole life cycle. System functions are intrinsically coupled synchronically and diachronically in ways that may affect the ability to respond to extreme conditions.

Correlation analysis of finger movements in dynamic hand grasping (잡기 동작에서 손가락 동작의 상관관계 분석)

  • Ryu, Tae-Beom;Yun, Myeong-Hwan
    • Journal of the Ergonomics Society of Korea
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    • v.20 no.3
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    • pp.11-25
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    • 2001
  • AS human movements have the inherent property of anticipating target and can be coordinated to realize a given schedule, finger movements have stereotyped patterns during hand grasping. Finger movements have been studied in the past to find out the coordination pattern of hand joint angular movement. These studies analyzed only a few finger joints for a limited number of hand postures. This study investigated fourteen joint angles during eight hand-grasping motions to analyze the angular correlations between finger joints and to suggest motion factors which represent hand grasping. Hand grasping motions including forward arm motion were examined in ten healthy volunteers. Eight objects were used to represent real hand grasping tasks. $CyberGlove^{TM}$ and $Fasreack^{TM}$ measured hand joint angles and wrist origin. Joint angle correlations between PIJ(proximal interphalangeal joint) and MPJ(metacarpophalangeal joint) at one finger, between neighboring PIJs and MPJs were four factors related to the fast phase of hand grasping motions and eight factors related to the slow phase of hand grasping motions.

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A Study on the Cutting Characteristics and Analysis by a FEM in the Machining of Ti-6Al-4V alloy (Ti-6Al-4V 합금의 절삭특성과 FEM 해석 비교에 관한 연구)

  • 김남용;홍우표;이동주
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.10 no.6
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    • pp.29-35
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    • 2001
  • The cutting characteristics of Ti-6Al-4V alloy and total wear when machining Ti-6Al-4V alloy was studied to understand the machining characteristics. This material is one of the strong candidate materials present and future aerospace or met ical applications. Nowadays their usage has already been broaden to commercial applications such as golf club head, finger rings and many decorative items. Anticipating the general use of this material and development of the titanium alloy in domestic facilities, the review and the study of the machining parameters far those alloys are deemed necessary. This study is concentrated to the machining parameters of the Ti-6Al-4V alloy due to their dominant position in the production of tita mum alloys.

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A Study on Roughness Characteristic about Rotational Accuracy Variation (스핀들의 회전 정밀도에 따른 표면 거칠기 특성 연구)

  • Park, Ki-Beom;Chung, Won-Jee;Lee, Choon-Man
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.18 no.1
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    • pp.110-115
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    • 2009
  • In general, the radial error motion of a machine tool spindle system is effected on the accuracy of the parts to be made. This paper presents in milling process an investigation into spindle rotational accuracy effects on surface roughness of processing parts. We experimented the effects on spindle rotational accuracy in milling process by cutting AL 7075 workpiece at various rotational speed. In order to analyze the effects of rotational accuracy on surface roughness, we proposed the method using iSIGHT's RBF Approximation. The proposed method can be used fur anticipating the surface roughness when some spindle rotational accuracy experiments could be done in milling process.

Deduction of inspection and maintenance system for traction motor of electronic locomotive (전동차의 견인전동기 상태진단 및 유지보수 체계 개선안 도출)

  • Lee, Sang-Soo;Kim, Min-Pyo;Kwak, Sang-Log;Cho, Yun-Ok
    • Proceedings of the KSR Conference
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    • 2006.11b
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    • pp.706-712
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    • 2006
  • The present volume should address the unique method of deterioration analysis tailorly applicable to the study of traction motor, not existent maintenance works system with the time period standard, such as regular inspection works, maintenance works, selection for the repair works. The present volume has executed various field experiments in this method, should propose the procedures and baselines for anticipating the life expansion of traction motor and building precautional maintenance system for it, on the basis of these field experiments. The improvement scheme of traction motor maintenance system in the present volume should be to keep the out-of-order rate from unexpectedly soaring and make the cost-reduction effect through better maintenance work method.

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Development of Power Quality Monitoring System (전력품질 감시 시스템 개발(3) : 전력품질 감시 시스템)

  • Bahng, Soon-Jeong;Kim, Young-Il;Han, Jin-Hee;Yoon, Tai-Wook
    • Proceedings of the KIEE Conference
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    • 2003.11a
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    • pp.158-160
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    • 2003
  • Recently, with the increasing use of power semiconductors and microprocessors which are very sensitive to little change of power quality and for coping positively with anticipating power quality disputes between power providers and consumers which are possible to occur by of power market being formed, the power quality problem has gained preponderance among the contemporary research areas. To serve these purposes, this paper is described the integrated system for power quality monitoring, which provides speedy and powerful functions by analyzing the Event data and diverse graphic interfaces for user.

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50 Years of the Korean Geriatrics Society

  • Yoo, Hyung Joon
    • Annals of Geriatric Medicine and Research
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    • v.22 no.4
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    • pp.159-166
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    • 2018
  • The Korean Geriatrics Society was founded on October 3, 1968. Over the 50 years since then, the Society has incessantly strived to stay attuned to the aging society and to achieve an increasingly greater research impact in the field of gerontology and geriatric medicine. The Society has passed through periods of preparation for a leap forward, followed by rapid growth, expansion, and maturity. As a result, the Society has gained a firm foothold at home and abroad as a leading research society for both qualitative and quantitative achievements in geriatric medicine. At this juncture, with an ultra-aging society being just around the corner, we are celebrating its 50th anniversary and anticipating our second half-century with great enthusiasm about our mission and role as a leading geriatric research organization.

The Ropeless Elevator: New Transportation System for High-rise Buildings (and Beyond)

  • Belmonte, Martina;Trabucco, Dario
    • International Journal of High-Rise Buildings
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    • v.10 no.1
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    • pp.55-62
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    • 2021
  • The paper reports the result of a 2-year long research conducted by CTBUH on the design possibilities enabled by the Ropeless and Multidirectional elevator systems, investigating how such a significant innovation (or better to say revolution) in the vertical transportation could affect tall buildings first and cities then. The purpose of the study is to prefigure the adoption of ropeless and multidirectional cabins for tall buildings mobility, with the aim to overcome the evolutionary bottleneck of the high-rise building type due to the exclusively vertical direction of transport, which limited, over the years, the design possibilities in terms of height, shape and relations with the surrounding environment. CTBUH research team, together with professionals in the field and supporting academic advisors, developed a series of design considerations on plan organizations, dispatching alternatives and on the integration of horizontal direction in the circulation, with the aim of anticipating potential and criticality arising from the application of ropeless and multidirectional systems.

Sustainability Made Possible by Documentation: Exploring Assemble's Granby Four Streets (2013)

  • Yoon, Jimin;Lim, Shan
    • International Journal of Advanced Culture Technology
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    • v.9 no.4
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    • pp.1-8
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    • 2021
  • Since the late 20th century, various projects in the public domain where local communities and art organizations collaborate have been attempted in miscellaneous ways. In terms of anticipating an active attitude of the community, socially engaged project focuses on proactively changing everyday life and environment of people. An art collective, Assemble who won the Turner Prize in 2015 for one of their projects named Granby Four Streets (2013) has been admitted as an exemplary of this phenomenon, and it appears frequently in discussions about community-led projects. We investigate Granby Four Streets, as well as the documentation formed by the perspective of third parties based on the surveillance and criticism aspects. It asserts that the limitation of socially engaged projects that are kept ephemerally and easily forgotten could be overcome with the concept of documentation and its practice.

Social Media Data Analysis Trends and Methods

  • Rokaya, Mahmoud;Al Azwari, Sanaa
    • International Journal of Computer Science & Network Security
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    • v.22 no.9
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    • pp.358-368
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    • 2022
  • Social media is a window for everyone, individuals, communities, and companies to spread ideas and promote trends and products. With these opportunities, challenges and problems related to security, privacy and rights arose. Also, the data accumulated from social media has become a fertile source for many analytics, inference, and experimentation with new technologies in the field of data science. In this chapter, emphasis will be given to methods of trend analysis, especially ensemble learning methods. Ensemble learning methods embrace the concept of cooperation between different learning methods rather than competition between them. Therefore, in this chapter, we will discuss the most important trends in ensemble learning and their applications in analysing social media data and anticipating the most important future trends.