• Title/Summary/Keyword: Australian

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Experimental Study on Supersonic Combustion Phenomena in the Cavity Duct by the Supersonic Inflow Conditions (초음속 유입 유동 조건에 따른 공동을 포함한 덕트 내 초음속 연소 현상에 관한 실험적 연구)

  • Jeong, Eun-Ju;Jeung, In-Seuck;O'Byrne, Sean;Houwing, A.F.P.
    • 한국연소학회:학술대회논문집
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    • 2006.10a
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    • pp.209-219
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    • 2006
  • The supersonic combustion experiments are carried out using T3 free-piston shock tunnel. Different shock tube fill pressures have various inflow conditions. $15^{\circ}$ inclined hydrogen fuel injection is located before the cavity. Oblique shock is generated at the trailing edge of the cavity and reflects off the top and bottom wall. For non-reacting flow, static pressures in low equivalence ratio are similar to those in no fuel injection. As equivalence ratio is increased, static pressures are increased in the duct. In the similar equivalence ratio, static pressures are increased when total enthalpy is decreased. For reacting flow, the flame is occurred near the cavity. The combustion is weak locally in the middle of the duct. The up and down pressure distribution in the duct means that the supersonic combustion is generated.

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Stress and Adaptation of Adopting Families : Open Adoption in Korea and Australia (입양 가정의 스트레스와 적응 : 한국과 호주의 공개입양가정을 중심으로)

  • Koo, Mee-Hyang
    • Korean Journal of Child Studies
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    • v.29 no.6
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    • pp.105-119
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    • 2008
  • Investigating cross-cultural differences of family stress and adaptation in Korea and Australia, 49 families in open adoption were administered the Family Index of Regenerativity and Adaptation-General (McCubbin, 1987), Family Problem Solving Communications (McCubbin et al., 1988), and Social Support Index (McCubbin et al., 1982). Data were analyzed by T-test and correlation analysis. Results indicated that adoption itself was the primary stressor in both countries. Korean adoptive families were under stress by family-oriented factors; Australian adoptive families experienced external family stress. Regarding family hardiness, coping efforts and family communication, Australian adoptive families reported significantly higher family functioning than Korean adoptive families. Findings suggested that a broad range of social support is needed to improve family adaptability in both countries.

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Situating social games in the everyday: an Australian perspective

  • Willson, Michele
    • Journal of Contemporary Eastern Asia
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    • v.14 no.1
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    • pp.57-69
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    • 2015
  • This paper explores some of the ways in which social games - games played with others through social network sites such as Facebook - are situated within the everyday. It argues that social games are more than just games; they perform a range of interactive and integrative functions across and within people's lives and therefore need to be investigated as such. Social games en-able spaces for and practices of creative expression, and identity management. They also form a mechanism through which relations can be enacted and maintained across and outside of the game environment. This argument requires the researcher to consider the panoply of ways in which people integrate social games within their lives and everyday practices. Part of a larger project, this paper explores some findings from an exploratory survey of Australian game play-ers about their management and integration of game play within the everyday with a particular focus on gender.

Pertinent issues on the strength design of steel structures to AS4100-1998

  • Bradford, Mark A.
    • Steel and Composite Structures
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    • v.5 no.2_3
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    • pp.87-101
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    • 2005
  • This paper describes of an overview to the strength rules in the Australian AS4100 Steel Structures Code that was first issued in Limit States Format in 1990. It focuses on pertinent and characteristic issues, such as the means of analysis for second order effects in frames, and highlights how the tiered approach may lead to efficient design using advanced analysis techniques. It also considers design against buckling in some detail, and shows how advanced solutions may be readily incorporated into the design rules. Implicit in the formulations are the necessity for ductility of the steel, and the scope of the code is limited to steels that display this necessary ductility characteristic.

The Code of Ethics for APEC Engineer (APEC ENGINEER 윤리강령)

  • 백이호
    • Journal of the Korean Professional Engineers Association
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    • v.34 no.1
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    • pp.78-82
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    • 2001
  • Korea APEC ENGINEER Monitoring Committee had announced the Code of Ethics for APEC ENGINEER in Oct. 1999. Korea APEC ENGINEER REGISTER had included the ethical model of APEC ENGINEER as required essential subject to be lectured for continuing professional development. The code of ethic is necessary for the benefit of the engineers themselves. The code of ethic is necessary for the benefit of the engineers themselves. The comparison between Korean code of ethics and Australian code of ethics shows that Australian gives more points to the Engineer's role to protect the safety of the public. Korea has too many laws regulating the engineers'practice, which can be handled by the cede of ethics. From now on, we, engineers should pay more attentions to the code of engineer's ethics and establish new and best model of ethics by enough discussion.

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Experimental Study on Upstream Fueled Cavity Flame-Holder Scramjet Engine (상류 분사 공동 화염 지지부를 가지는 스크램제트 엔진에 관한 실험적 연구)

  • Jeong, Eun-Ju;Jeung, In-Seuck;O'Byrne, Sean;Houwing, A.F.P.
    • Journal of the Korean Society of Combustion
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    • v.11 no.4
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    • pp.1-8
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    • 2006
  • The model cavity scramjet engine experiments are carried out using T3 free-piston shock tunnel. Upstream hydrogen fuel is injected before the cavity with different injection pressure. OH planar laser-induced fluorescence is used to investigate the combustion zone and piezoelectric pressure transducers are used to define the pressure rise due to the combustion. Main combustion region is a mixing layer which is between air and fuel. Also high OH fluorescence signal is appeared in the shear layer above the cavity in high equivalence ratio. From the OH signal in the cavity, this fuel injection system can be a role as a flame-holder.

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An Analysis for Rollowver Strength of a Medium Bus (중형버스의 전복 강도해석)

  • Min, Han-Ki;Kim, Taeg
    • Transactions of the Korean Society of Automotive Engineers
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    • v.7 no.7
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    • pp.195-201
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    • 1999
  • In Rollover crashes, the development of bus structure to ensure the maintenance of survival space for passengers is very important . So, this paper focuses on understanding the possibility of efficient structural development considering rollover strength through computer simulation using the commercial code, LS-DYNA3D at the initial stage of vehicle development structural members, and impact boundary conditions required by ADR59(Australian Design Rule 59)were applied. In order to confirm the validity of the computational results, the test results. After the usefulness of this method of analysis was confirmed , we have proposed the effective modificationfor rollover strength.

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Experimental Study on Supersonic Combustion with Parallel Fuel Injection Method in the Cavity (공동 내부로의 평행분사방법을 이용한 초음속 연소의 실험적 연구)

  • Jeong, Eun-Ju;Jeung, In-Seuck;O'Byrn, Sean;Houwing, A.F.P
    • 한국연소학회:학술대회논문집
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    • 2007.05a
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    • pp.31-36
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    • 2007
  • The supersonic combustion experiments are carried out using T3 free-piston shock tunnel. Hydrogen Fuel is injected in the cavity parallel with air(or nitrogen fuel) flow. The equivalence ratios in this study are 0.132 and 0.447. Experimental measurements use OH-PLIF near the cavity and pressures in the combustor. For parallel fuel injection case, direct fuel add into cavity leads to increase of cavity pressure. And Flame exists just near the bottom wall for low equivalent ratio. There is no flame in the cavity because of no mixing in it. Compared to the inclined fuel injection, ignition delay length is longer for low equivalence ratio in both case. OH distribution is not a single line but a repeatable fluctuation flame structure by turbulence. Pressure distributions have nothing to do with the fuel injection position.

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The "Third Wave": Values associated with Effective Learning of Mathematics in Australian Primary Classrooms

  • Seah, Wee Tiong
    • Proceedings of the Korea Society of Mathematical Education Conference
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    • 2010.04a
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    • pp.291-306
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    • 2010
  • The study reported here is the Australian component of an international research project which seeks to identify student-reported convictions co-valued by them and their teachers during moments of effective mathematics learning. The 2 teachers and their 12 students in the 2 primary school classes associated effective moments of learning with 13 different values. No gender difference was apparent. Although the teachers planned their lessons together and were teaching similar topics, there were differences in what were co-valued. Of the 13 values, examples, sharing, resources, and multimodal representations were found to be commonly valued by students across the 'ability' groups, while the others related to particular 'ability' groups only.

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A Case of Ancylostoma ceylanicum Infection Occurring in an Australian Soldier Returned from Solomon Islands

  • Speare, Rick;Bradbury, Richard Stewart;Croese, John
    • Parasites, Hosts and Diseases
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    • v.54 no.4
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    • pp.533-536
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    • 2016
  • A 26-year-old male member of the Australian Defense Force presented with a history of central abdominal pain of 4 weeks duration and peripheral eosinophilia consistent with eosinophilic enteritis. Acute hookworm disease was diagnosed as the cause. Adult worms recovered from feces after therapy with albendazole were morphologically consistent with Ancylostoma ceylanicum. As the patient had been deployed with the Regional Assistance Mission to Solomon Islands for 6 months prior to this presentation, it is very likely that the A. ceylanicum was acquired in Solomon Islands. Until now, it has been assumed that any Ancylostoma spp. recovered from humans in Solomon Islands is A. duodenale. However, this case demonstrates that human hookworm infection acquired in the Solomon Islands could be caused by A. ceylanicum.