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Exotic and excited-state meson spectroscopy and radiative transitions from lattice QCd

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Chinese Physics C 2010年第9期34卷 1512-1515页

作者： christopher E.Thomas Jefferson Laboratory

We discuss recent progress in extracting the excited meson spectrum and radiative transition form factors from lattice *** mention results in the charmonium sector,including the first lattice QCd calculation of radiative transition rates involving excited charmonium states,highlighting results for high spin and exotic *** present recent results on a highly excited isovector meson spectrum from dynamical anisotropic *** carefully constructed operators we show how the continuum spin of extracted states can be reliably identified and confidently extract excited states,states with exotic quantum numbers and states of high *** spectrum includes the first spin-four state extracted from lattice *** conclude with some comments on future prospects.

关键词： lattice QCd exotics mesons spectroscopy

Numerical prediction of the frictional losses in sliding bearings during start-stop operation

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friction 2021年第3期9卷 583-597页

作者： florian KÖNIG christopher SOUS Georg JACOBS Institute for Machine Elements and Systems Engineering Rheinisch-Westfälische Technische Hochschule Aachen UniversitySchinkelstraße 10Aachen 52062Germany

With the increased use of automotive engine start-stop systems,the numerical prediction and reduction of frictional losses in sliding bearings during starting and stopping procedures has become an important *** engineering practice,numerical simulations of sliding bearings in automotive engines are performed with statistical asperity contact models with empirical values for the necessary surface *** aim of this study is to elucidate the applicability of these approaches for the prediction of friction in sliding bearings subjected to start-stop *** this purpose,the friction performance of sliding bearings was investigated in experiments on a test rig and in transient mixed elasto-hydrodynamic simulations in a multi-body simulation environment(mixed-EHL/MBS).In mixed-EHL/MBS,the extended Reynold’s equation with flow factors according to Patir and Cheng has been combined on the one hand with the statistical asperity contact model according to Greenwood and Tripp and on the other hand with the deterministic asperity contact model according to *** detailed comparison of simulation and experimental results clarifies that the application of statistical asperity contact models with empirical values of the necessary inputs leads to large deviations between experiment and *** actual distribution and position of surface roughness,as used in deterministic contact modelling,is necessary for a reliable prediction of the frictional losses in sliding bearings during start-stop operation.

关键词： sliding bearing friction wearing-in contact model,mixed elasto-hydrodynamic simulation

Solution for fractional potential KdV and Benjamin equations using the novel technique

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Journal of Ocean Engineering and Science 2021年第3期6卷 265-275页

作者： P.Veeresha d.G.Prakasha N.Magesh A.John christopher deepak Umrao Sarwe department of Mathematics CHRIST(Deemed to be University)Bengaluru-560029India department of Mathematics Faculty of ScienceDavangere UniversityShivagangothriDavangere-577007India P.G.and Research department of Mathematics Govt.Arts College for MenKrishnagiri-635001India department of Mathematics University of MumbaiKalinaSantacruz EastMumbai-400098India

In this paper,we find the solutions for fractional potential Korteweg-de Vries(p-KdV)and Benjamin equations using q-homotopy analysis transform method(q-HATM).The considered method is the mixture of q-homotopy analysis method and Laplace transform,and the Caputo fractional operator is considered in the present *** projected solution procedure manipulates and controls the obtained results in a large admissible ***,it offers a simple algorithm to adjust the convergence province of the obtained *** validate the q-HATM is accurate and reliable,the numerical simulations have been conducted for both equations and the outcomes are revealed through the plots and *** between the obtained solutions with the exact solutions exhibits that,the considered method is efficient and effective in solving nonlinear problems associated with science and technology.

关键词： Potential KdV equation q-Homotopy analysis method fractional Benjamin equation Laplace transform Ginzburg-Landau equation Caputo fractional operator

Acuros XB Algorithm vs. Anisotropic Analytical Algorithm: A dosimetric Study Using Heterogeneous Phantom and Computed Tomography (CT) data Sets of Esophageal Cancer Patients

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Journal of Cancer Therapy 2013年第1期4卷 138-144页

作者： Suresh Rana Kevin rogers Shyam Pokharel Terry Lee daniel Reed christopher Biggs department of Radiation Oncology Arizona Center for Cancer Care Peoria USA Premiere Oncology Fort Myers USA

Our purpose in this study was to assess the dosimetric impact of the Acuros XB algorithm (AXB), in comparison with Anisotropic Analytical Algorithm (AAA) calculations, for esophageal cancer treatment plans created with RapidArc technique. first, we performed a phantom study by comparing the percent depth dose (Pdd) calculated by AXB and AAA against the measured Pdd in a slab phantom containing a 2 cmair gap thickness. Second, we performed a clinical study using a computed tomography (CT) data set from 10 esophageal cancer patients. The treatment plans calculated by AXB and AAA were evaluated for planning target volume (PTV) coverage, doses to the PTV and organs at risk (OARs). dose calculations by the AXB and AAA were done for identical beam parameters. The AXB showed better agreement (within ±0.5%) with measurements than did the AAA (?4.9% to ?6.2%). In comparison to the AAA, the AXB predicted a higher maximum PTV dose (2.0%), but lower mean (1.1%) and minimum (2.5%) PTV doses as well as reduced PTV coverage (9.1%). The averaged mean doses to all OARs predicted by the AXB were lower (up to 3.6%), and the percentage of lungs volume receiving at least 20 and 5 Gy were lower by about 3.6% in the AXB plans compared to the AAA plans. The AXB is more accurate than the AAA for dose predictions when air medium is involved. The use of AXB is more likely to avoid dose overestimation or underestimation for the esophageal cancer treatment plans compared to AAA.

关键词： Acuros XB AAA Esophageal Cancer Heterogeneity Correction

Recapturing meaning: Toward a new material-based design theory for architecture

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frontiers of Architectural Research 2022年第4期11卷 609-617页

作者： christopher Bardt faculty of Architecture Rhode Island School of DesignRhode IslandUSA

Architects and students of architecture today are less physically engaged with modeling and drawing representations of proposed things and increasingly rely on digital means and methods that are transforming their embodied interactions with actual materials. The result is that meaning, which makes architecture so central to our cultures, is being diminished. It is being replaced by a misplaced belief that "better" buildings and architecture result from increased use of digital tools. To recapture meaning will require a new design theory for architecture that builds on material engagement theory and the critical role of resistance and sensuous reasoning in the design process, which material has historically provided.

关键词： Architecture design Material engagement Material-based design Meaning digital tools

Amplitude Variation with Offset Responses Modeling Study of Walkaway Vertical Seismic Profile data at CO_2 Geological Storage Site,Ketzin,Germany

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Acta Geologica Sinica(English Edition) 2011年第5期85卷 1118-1126页

作者： Sayed Hesammoddin KAZEMEINI christopher JUHLIN department of Earth Sciences Uppsala University

An important component of any CO_2 sequestration project is seismic monitoring for tracking changes in subsurface physical properties,such as velocity and *** reservoirs have different amplitude variation with offset(AVO) responses,which can define underground conditions. In the present paper we investigate walkaway vertical seismic profile(VSP) AVO response to CO_2 injection at the Ketzin site,the first European onshore CO_2 sequestration pilot study dealing with research on geological storage of CO_***,we performed rock physics analysis to evaluate the effect of injected CO_2 on seismic velocity using the Biot-Gassmann *** the basis of this model,the seismic response for different CO_2 injection saturation was studied using ray tracing *** then created synthetic walkaway VSP data,which we then *** contrast,synthetic seismic traces were created from borehole ***,we found that the amplitude of CO_2 injected sand layer with different gas saturations were increased with the offset when compared with the original brine target *** is the typical classⅢAVO anomaly for gas sand *** AVO responses matched the synthetic seismic traces very ***,walkaway VSP AVO response can monitor CO_2 distribution in the Ketzin area.

关键词： CO_2 injection rock physics amplitude variation with offset walkaway vertical seismic profile seismic modeling

Clinical variability and molecular heterogeneity inprostate cancer

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Asian Journal of Andrology 2016年第4期18卷 543-548页

作者： Jonathan Shoag christopher E Barbieri department of Urology NewYork-Presbyterian Hospital Weill Cornell Medical College New York USA Sandra and Edward Meyer Cancer Center Weill Cornell Medica College New York USA.

Prostate cancer is a clinically heterogeneous disease, with some men having indolent disease that can safely be observed, while others have aggressive, lethal disease. Over the past decade, researchers have begun to unravel some of the genomic heterogeneity that contributes to these varying clinical phenotypes. distinct molecular sub-classes of prostate cancer have been identified, and the uniqueness of these sub-classes has been leveraged to predict clinical outcomes, design novel biomarkers for prostate cancer diagnosis, and develop novel therapeutics. Recent work has also elucidated the temporal and spatial heterogeneity of prostate cancer, helping us understand disease pathogenesis, response to therapy, and progression. New genomic techniques have provided us with a window into the remarkable clinical and genomic heterogeneity of prostate cancer, and this new perspective will increasingly impact patient care.

关键词： cell biology ERG genomics molecular heterogeneity prostate cancer sequencing serine peptidase inhibitor, Kazaltype 1 SPOP tumor profiling

development of a web-platform for mining applications

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International Journal of Mining Science and Technology 2018年第1期28卷 95-99页

作者： christopher Newman Zach Agioutantis Nathaniel Schaefer department of Mining Engineering University of Kentucky

‘‘Web ground control"(web GC) provides users with instantaneous access to mine design applications anywhere, at any time, through a web *** a web-based multiple-tier architecture, users are able to easily access ground control designs, perform on-demand calculations in the field, as well as facilitate project collaborations across multiple users, devices, and operating ***, the web GC platform contains five ground control related design applications previously developed and distributed by the US National Institute of Occupational Safety and Health(NIOSH), that is, analysis of roof bolt stability(ARBS), analysis of longwall pillar stability(ALPS), analysis of retreat mining stability(ARMPS), analysis of retreat mining stability–highwall mining(ARMPS-HWM), and analysis of horizontal stress in mining(AHSM).With respect to design decisions made by the web GC development team, the web GC platform will be able to further integrate future mine design applications providing the mining industry with one of a kind umbrella suite of ground control related software available at ones *** following paper provides a detailed overview on the current state of the web GC platform with discussions ranging from back-end database development and design to the front-end user-platform *** on current progress in platform development as well as beta testing results, the web GC platform is scheduled for release in the fall of 2018.

关键词： Ground control Stability Web application Cloud computing

A review of rural transformation studies:definition,measurement,and indicators

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Journal of Integrative Agriculture 2023年第12期22卷 3568-3581页

作者： dong WANG Chunlai CHEN christopher fINdLAY Crawford School of Public Policy Australian National UniversityCanberra 2600Australia

The paper reviews studies of rural transformation in three dimensions-definition,measurement,and indicators-and summarises the findings of rural transformation *** scope of rural transformation includes four elements-productivity,rurality,inclusiveness,and *** concepts of the dimensions of rural transformation and their associated indicators are insufficient for policy decision-making,as they lack objectivity,feasibility,accountability,comprehensiveness,and *** research to develop new measures to assess rural transformation in developing countries is ***,there is potential to explore the topic in some directions:urbanisation strategy,public intervention(i.e.,institution,policy,and investment),gender inclusiveness,market creation,and international trade.

关键词： rural transformation agricultural transformation structural change