A new approach on recursive and non-recursive SIR methods

Bernard Bercu,Thi Mong Ngoc Nguyen,Jérôme Saracco 한국통계학회 2012 Journal of the Korean Statistical Society Vol.41 No.1

We consider a semiparametric single index regression model involving a p-dimensional quantitative covariable x and a real dependent variable y. A dimension reduction is included in this model via an index x′β. Sliced inverse regression (SIR) is a well-known method to estimate the direction of the Euclidean parameter β which is based on a ‘‘slicing step’’ of y in the population and sample versions. The goal of this paper is twofold. On the one hand,we focus on a recursive version of SIR which is also suitable for multiple indices model. On the other hand, we propose a new method called SIRoneslice when the regression model is a single index model. The SIRoneslice estimator of the direction of β is based on the use of only one ‘‘optimal’’ slice chosen among the H slices. Then, we provide its recursive version. We give an asymptotic result for the SIRoneslice approach. Simulation study shows good numerical performances of the SIRoneslice method and clearly exhibits the main advantage of using recursive versions of the SIR and SIRoneslice methods from a computational time point of view. A real dataset is also used to illustrate the approach. Some extensions are discussed in concluding remarks. The proposed methods and criterion have been implemented in R and the corresponding codes are available from the authors.

Toward a Christian Kōan Practice The Gateless Barrier (無門關) of Luke’s Gospel

BERNARD SENÉCAL S.J. 西江大學校 宗敎硏究所 2006 韓國宗敎硏究 Vol.8 No.-

Validation of Actinides Nuclear Cross-Section Using Pile-Oscillation Experiments Performed at MINERVE Facility

D. Bernard,P. Leconte,A. Gruel,M. Antony,A. Pepino,J. Di Salvo,A. Lecluze,J-F. Ledoux,C. Morel,B. Sabatin 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23

The CEA is deeply involved in a research program (Material Test Reactor and Zero Power Reactor) concerning the nuclear fuel advanced studies (actinides, plutonium), the waste management, the scientific and technical support of French PWR reactors and EPR reactor, and innovative systems. In this framework, specific neutron integral experiments have been carried out in the critical ZPR facilities of the CEA Cadarache such as MINERVE, EOLE and MASURCA. This paper deals with MINERVE Pool Reactor experiments. MINERVE is mainly devoted to neutronics studies of different reactor core types. The aim is to improve the knowledge of the integral absorption cross sections of actinides (OSMOSE program). The results show a very good accuracy of JEFF-3.1.1 files except for ²⁴¹Am(n,γ) which seems to be underestimated by about (-6± 2)% in the thermal and epithermal neutron energy range.

TBCC를 위한 CVC 엔진의 데토네이션 현상 기초 연구

최정열(J.-Y. Choi),Bernard Parent,조덕래(D.-R. Cho),강기하(K. Kang),신재렬(J.-R. Shin),이수한(S.-H. Lee),이태형(T.-H. Yi) 한국추진공학회 2008 한국추진공학회 학술대회논문집 Vol.2008 No.11

DARPA가 계획 중인 대형 극초음속 추진 기관 개발 프로그램 VULCAN 프로그램은 듀얼모드 램제트/스크램제트 엔진과 연계되어 TBCC엔진을 이룰 수 있도록, 기존의 터보제트(또는 터보팬) 엔진과 CVC과 엔진을 결합하여 마하수 4이상에서 작동 가능한 엔진을 개발하는 것을 목표로 하고 있다. CVC 엔진은 데토네이션 연소 현상을 기본으로 하여 고마하수에서 고효율을 얻을 수 있는 PDE 이나 CDE와 같은 신개념의 엔진이다. 본 논문에서는 부산대학교 항공우주공학과 연소 추진 연구실에서 지난 수년간 국제공동 연구의 형태로 수행한 데토네이션 현상의 추진기관 응용에 연구에 대하여 소개한다. DARPA"s hypersonic propulsion program VULCAN is aimed for development of Mach 4+ capable engine by combining current production turbofan engine such as F119 with CVC (Constant Volume Combustion) engine. Final goal is a TBCC(Turbo-based Combined Cycle) engine by combining with dual mode ramjet/scramjet engine. CVC is a common designation of new concept of high efficiency engines, such as Pulse Detonation Engine (PDE) or Continuous Detonation Engine (CDE), which use the detonation as a combustion mechanism. Present paper introduces the internationally collaborative research activities carried out in Aerospace Combustion and Propulsion Laboratory of the department of Aerospace Engineering of the Pusan national University.

불전력공사의 국민홍보

Chaussade J.P.,Bernard J.F. 한국원자력산업회의 1990 원자력산업 Vol.10 No.8

Estimation of CO₂ effluxes from suburban forest floor and grass using a process-based model

Chun, J.A.,Szlavecz, K.,Bernard, M.,Ferrer, D.,Hom, J.,Saliendra, N. Pergamon Press ; Elsevier [distribution] 2014 Atmospheric environment Vol.97 No.-

Carbon dioxide is an important greenhouse gas, and its atmospheric concentration has been predicted to increase in the future. The objective of this study was to quantify the soil CO<SUB>2</SUB> efflux in a suburban area including mixed deciduous forest and grass by numerically modeling the CO<SUB>2</SUB> transport through the soil profile. Three stations per land-cover (forest and grass) were selected at the Cub Hill site (MD, USA), where the US Forest Service operates an urban flux tower. Six VAISALA CO<SUB>2</SUB> sensors (Vaisala Inc., Finland) per monitoring station were horizontally installed at 6 different depths (soil surface, 0.02, 0.05, 0.10, 0.20, and 0.30 m from the soil surface) in the mid of May, 2011. Temperature and volumetric soil moisture measurements were taken using thermistors and EC-5 sensors (Decagon devices, Pullman, WA, USA) that were installed at the same depths as the CO<SUB>2</SUB> sensors except for the soil surface. These data were recorded every 10 min. To evaluate the numerical model (SOILCO2), CO<SUB>2</SUB> efflux using the standard chamber method was measured once a week. The CO<SUB>2</SUB> effluxes from the standard chamber method ranged from 3.32 x 10<SUP>-9</SUP> to 7.28 x 10<SUP>-8</SUP> m<SUP>3</SUP> m<SUP>-2</SUP> s<SUP>-1</SUP> and 6.79 x 10<SUP>-9</SUP> to 1.45 x 10<SUP>-7</SUP> m<SUP>3</SUP> m<SUP>-2</SUP> s<SUP>-1</SUP> for forest and grass, respectively. The CO<SUB>2</SUB> effluxes from ''bare'' soil at the grass site varied with the range of 3.63 x 10<SUP>-8</SUP> to 9.37 x 10<SUP>-8</SUP> m<SUP>3</SUP> m<SUP>-2</SUP> s<SUP>-1</SUP>. The ''pulse effect'' (a rapid increase of CO<SUB>2</SUB> concentrations right after rainfall events) in grass, where changes in soil moisture were larger than in the forest, was more apparent than in the forest. Diurnal patterns similar to those of temperature were observed from CO<SUB>2</SUB> profiles in soils. The SOILCO2 model estimated the soil CO<SUB>2</SUB> effluxes with coefficients of correlation of 0.64 and 0.76 at forest and grass, respectively, and root mean square error (RMSE) of 1.58 x 10<SUP>-8</SUP> and 2.06 x 10<SUP>-8</SUP> m<SUP>3</SUP> m<SUP>-2</SUP> s<SUP>-1</SUP> for forest and grass, respectively. This study suggests that the SOILCO2 model can provide a better understanding of the contribution of the soil ecosystem to the carbon cycle in suburban environments including mixed deciduous forest and grass.

DIRECT-SAFE: A Randomized Controlled Trial of DIRECT Endovascular Clot Retrieval versus Standard Bridging Therapy

Peter J. Mitchell,Bernard Yan,Leonid Churilov,Richard J. Dowling,Steven Bush,Thang Nguyen,Bruce C.V. Campbell,Geoffrey A. Donnan,Zhongrong Miao,Stephen M, Davis 대한뇌졸중학회 2022 Journal of stroke Vol.24 No.1

Background and Purpose The benefit regarding co-treatment with intravenous (IV) thrombolysis before mechanical thrombectomy in acute ischemic stroke with large vessel occlusion remains unclear. To test the hypothesis that clinical outcome of ischemic stroke patients with intracranial internal carotid artery, middle cerebral artery or basilar artery occlusion treated with direct endovascular thrombectomy within 4.5 hours will be non-inferior compared with that of standard bridging IV thrombolysis followed by endovascular thrombectomy. Methods To randomize 780 patients 1:1 to direct thrombectomy or bridging IV thrombolysis with thrombectomy. An international-multicenter prospective randomized open label blinded endpoint trial (PROBE) (ClincalTrials.gov identifier: NCT03494920). Results Primary endpoint is functional independence defined as modified Rankin Scale (mRS) 0–2 or return to baseline at 90 days. Secondary end points include ordinal mRS analysis, good angiographic reperfusion (modified Thrombolysis in Cerebral Infarction score [mTICI] 2b–3), safety endpoints include symptomatic intracerebral hemorrhage and death. Conclusions DIRECT-SAFE will provide unique information regarding the impact of direct thrombectomy in patients with large vessel occlusion, including patients with basilar artery occlusion, with comparison across different ethnic groups.

The Contribution of Socio-Rhetorical Interpretation to the Reformed Interpretation of Scripture

H.J. 버나드 콤브링크(H.J. Bernard Combrink) 한국복음주의신약학회 2008 신약연구 Vol.7 No.2

사회-수사학적 해석은 개혁주의 신학 안에서와 개혁파 성경학자들 사이에서 중요한 역할을 수행할 수 있다. 그 해석의 분명한 공헌은 성경 본문에 대한 우리의 해석을 도전하고 풍성하게 한다는 점이다. 그 해석은 또한 성경에 대한 우리의 학문적 해석들을 분석하는 데 비평적으로 기능할 수 있으며 성경 외의 다른 신학적 본문들을 분석하는 데 사용될 수도 있다. 수사학이 조직신학의 과업의 한 부분이라면, 누구든지 다른 사람들의 신학을 그들 시대의 담화들(discourses) 속에서 이해할 뿐 아니라 자기 자신의 입장을 더 잘 이해할 수 있을 것이다. 수사학은 전통들 사이에 존재하는 신학적 차이들을 더욱 잘 이해하는 데 공헌할 수 있다. 신학적인 담화들은 기본적으로 차이(difference)와 반대(opposition)에 의존하고 있기 때문이다. 그러므로 수사학(과 사회-수사학적 해석)은 우리의 설교를 분석하는 데도 유용할 수 있고 우리의 신학 교육을 개선하는 데에도 도움을 줄 수 있다. 사회-수사학적 해석의 공헌은 우리로 하여금 균등화되기 쉬운 모든 관련 요인들에 대하여 훨씬 더 자기 비판적이며 반성적이 되게 하는 것이다.

Design and tests of 500kW RF windows for the ITER LHCD system

Hillairet, J.,Kim, J.,Faure, N.,Achard, J.,Bae, Y.S.,Bernard, J.M.,Delpech, L.,Goniche, M.,Larroque, S.,Magne, R.,Marfisi, L.,Park, S.,Poli, S.,Dechambre, N.,Vulliez, K. Elsevier 2015 Fusion engineering and design Vol.94 No.-

<P><B>Abstract</B></P> <P>In the frame of a R&D effort conducted by CEA towards the design and the qualification of a 5GHz LHCD system for the ITER tokamak, two 5GHz 500kW/5s windows have been designed, manufactured and tested at high power in collaboration with the National Fusion Research Institute (NFRI). The window design rely on a symmetrical pill-box concept with a cylindrical beryllium oxide ceramic brazed on an actively water cooled copper skirt. The ceramic RF properties have been measured on a test sample to get realistic values for guiding the design. Low power measurements of the manufactured windows show return losses below −32dB and insertion losses between −0.01dB and −0.05dB, with an optimum frequency shifted toward lower frequencies. High power tests conducted at NFRI show unexpected total power loss for both windows. The ceramic temperature during RF pulses has been found to reach unexpected high temperature, preventing these windows to be used under CW conditions. A post-mortem RF analysis of samples taken from one window shows that the dielectric properties of the ceramic were not the ones measured on the manufacturer sample, which partly explain the differences with the reference modelling.</P>

The Contribution of Socio-Rhetorical Interpretation to the Reformed Interpretation of Scripture

H. J. Bernard Combrink 한국복음주의신학회 2008 성경과신학 Vol.47 No.-