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Partition Identities Arising from Theta Function Identities

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Acta Mathematica Sinica,English Series 2008年第6期24卷 955-970页

作者： Nayandeep Deka BARUAH bruce C.BERNDT Department of Mathematical Sciences Tezpur UniversityNapaam-784028SonitpurAssamIndia Department of Mathematics University of Illinois at Urbana-Champaign1409 West Green St.UrbanaIL 61801USA

The authors show that certain theta function identities of Schroeter and Ramanujan imply elegant partition identities.

关键词： partitions colored partitions partition identities theta function identities modular equations

Activation of mitochondrial ATP-sensitive potassium channels delays ischemia-induced cellular uncoupling in rat heart

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Acta Pharmacologica Sinica 2004年第1期 24-30页

作者： Iain C bruce China Department of Physiology Faculty of Medicine The University of Hong Kong

AIM: To test the hypothesis that cellular uncoupling induced by myocardial ischemia is mediated by activation of cmitochondrial ATP-sensitive potassium channels (mitoKATP). METHODS: Rat hearts were perfused on a Langendorff apparatus and subjected to 40-min ischemia followed by 30-min reperfusion (I/R). Changes in cellular coupling were monitored by measuring whole-tissue resistance. RESULTS: (1) In hearts subjected to I/R, the onset of uncoupling started at (13.3±1.0) mm of ischemia; (2) Ischemic preconditioning (IPC) delayed the onset of uncoupling until (22.7±1.3) min. Blocking mitoKATP channels with 5-

关键词： heart mitochondria potassium channels adenosine ttiphosphate ischemic preconditioning uncoupling

Assessment of energy release mechanisms contributing to coal burst

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International Journal of Mining Science and Technology 2017年第1期27卷 43-47页

作者： Zhang Chengguo Canbulat Ismet Tahmasebinia Faham Hebblewhite bruce School of Mining Engineering UNSW Sydney 2052Australia

Coal burst is a dynamic release of energy within the rock （or coal） mass leading to high velocity expulsion of the broken/failed material into mine openings. This phenomenon has been recognised as one of the most catastrophic failures associated with the coal mining industry, which can often lead to injuries and fatalities of miners as well as significant production losses. This paper aims to examine the mecha- nisms contributing to coal burst occurrence, with an emphasis on the energy release concept. In this study, a numerical modelling study has been conducted to evaluate the roles and contributions of differ- ence energy components. The energy analysis presented in this paper can help to improve the under- standing of energy release mechanisms esoeciallv under Australian conditions.

关键词： Coal burstCoal burst mechanismsEnergy releaseNumerical modellingMine geomechanics

Phase Transitions of Ferromagnetic Potts Models on the Simple Cubic Lattice

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Chinese Physics Letters 2014年第7期31卷 41-45页

作者：王顺谢志远陈靖 bruce Normand 向涛 Institute of Physics Chinese Academy of Sciences Beijing 100190 Department of Physics Renmin University of China Beijing 100872

We investigate the 2- and 3-state ferromagnetic Ports models on the simple cubic lattice using the tensor renorrealization group method with higher-order singular value decomposition （FIOTRG）. HOTRG works in the thermodynamic limit, where we use the Zq symmetry of the model, combined with a new measure for detecting the transition, to improve the accuracy of the critical point for the 2-state model by two orders of magnitude, obtaining Tc = 4.51152469（1）. The 3-state model is far more complex, and we improve the overall understanding of this case by calculating its thermodynamic quantities with high accuracy. Our results verify that the first-order nature of the phase transition and the HOTRG transition temperature benchmarks the most recent Monte Carlo result.

关键词： PHASE transformations (Physics) FERROMAGNETIC materials CUBIC crystal system CRYSTAL lattices SINGULAR value decomposition

The role of preoperative immune modulating nutrition

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Hepatobiliary Surgery and Nutrition 2020年第2期9卷 221-222页

作者： bruce R.Bistrian Department of Medicine Harvard Medical SchoolBeth Israel Deaconess Medical CenterBostonMAUSA

The meta-analysis by Adiamah et al.(1)clearly identifies the value of preoperative feeding with immune modulating nutrition(IMN)preoperatively in patients undergoing surgery for gastrointestinal cancer sufficient to make this a general recommendation by the relevant nutrition societies such as in future ESPEN and the Society of Critical Care Medicine-ASPEN guidelines(2,3).Previously ESPEN has recommended IMN in malnourished patients following major cancer surgery(2,4),but there has been some controversy as to whether IMN offered benefit beyond that seen with standard supplemental feeding in preoperative patients(5).However this present analysis appears to firmly establish the value of IMN in preoperative preparation of the gastrointestinal cancer patient undergoing *** said there are significant and important characteristics of their analysis of 16 randomized trials of solely preoperative feeding in patients with gastrointestinal cancer that may have been critical in determining the significant outcomes of a marked reduction in infectious complications by nearly 1/2(OR=0.52)with a P<0.0001 and length of hospital stay by 1.57 days(-2.48 to-0.66)with a P value<*** there was no impact on non-infectious complications,which might be anticipated,since enhancement of immune function would be expected to principally impact on the risk of infectious complications which could then secondarily influence length of *** the authors restricted the included studies to have only those patients with malignant disease with the preoperative feeding period to be at least 3 days,which included studies up to a total of 8 days *** former restriction tends to identify a group most likely to benefit from immune enhancement.

关键词： preoperative nutrition likely

A review of cavability evaluation in longwall top coal caving

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International Journal of Mining Science and Technology 2017年第6期27卷 907-915页

作者： Tien Dung Le Rudrajit Mitra Joung Oh bruce Hebblewhite School of Mining Engineering The University of New South Wales Sydney NSW 2052 Australia

Longwall Top Coal Caving has been considered as one of the most effective technologies for the extraction of underground thick coal seams. A large number of studies on the applicability of Longwall Top Coal Caving into new mine sites have linked the success of its application to the geo mechanical understanding of the cavability of the top coal. The paper aims to improve the knowledge of the top coal cavability evaluation. A range of parameters that affect the top coal cavability were first identified. Afterward, a number of cavability assessment methods and classifications were reviewed. The result is important in that it assists researchers in developing an advanced and reliable tool for the top coal cavability evaluation.

关键词： Longwall top coal caving Cavability Numerical modelling Caving mechanism Caving classification

Propulsive matrix of a helical flagellum

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Chinese Physics B 2014年第11期23卷 51-56页

作者：张何朋刘斌 bruce Rodenborn Harry L.Swinney Department of Physics and Astronomy and Institute of Natural Sciences School of Natural Sciences University of California Department of Physics and Center for Nonlinear Dynamics University of Texas at Austin

We study the propulsion matrix of bacterial flagella numerically using slender body theory and the regularized Stokeslet method in a biologically relevant parameter regime. All three independent elements of the matrix are measured by computing propulsive force and torque generated by a rotating flagellum, and the drag force on a translating flagellum. Nu- merical results are compared with the predictions of resistive force theory, which is often used to interpret micro-organism propulsion. Neglecting hydrodynamic interactions between different parts of a flagellum in resistive force theory leads to both qualitative and quantitative discrepancies between the theoretical prediction of resistive force theory and the numerical results. We improve the original theory by empirically incorporating the effects of hydrodynamic interactions and propose new expressions for propulsive matrix elements that are accurate over the parameter regime explored.

关键词： low-Reynolds-number flows micro-organism dynamics bacterial swimming

The response of ecosystem carbon and nitrogen pools to experimental warming in grasslands: a meta-analysis

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Journal of Plant Ecology 2022年第4期15卷 733-742页

作者： Junliang Zou Juying Wu bruce Osborne Yiqi Luo Beijing Research&Development Centre for Grass and Environment Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China UCD School of Biology and Environmental Science and UCD Earth Institute University College DublinBelfeldDublin 4Ireland Center for Ecosystem Science and Society Department of Biological SciencesNorthern Arizona UniversityFlagstaffAZUSA

Carbon(C)and nitrogen(N)coupling processes in terrestrial ecosystems have the potential to modify the sensitivity of the global C cycle to climate *** the degree to which C–N interactions contribute to the sequestration of terrestrial ecosystem C(C_(seq)),both now and in the future,remains *** this study,we used a meta-analysis to quantitatively synthesize C and N responses from feld experiments on grasslands subjected to simulated warming and assessed the relative importance of three properties(changes in ecosystem N amount,redistribution of N among soil,litter and vegetation,and modifcations in the C:N ratio)associated with grassland C_(seq) in response to *** increased soil,litter and vegetation C:N ratios and approximately 2%of N shifted from the soil to vegetation and ***-induced grassland C_(seq) was the result of the net balance between increases in vegetation and litter C(111.2 g·m^(−2))and decreases in soil C(30.0 g·m^(−2)).Warming-induced accumulation of C stocks in grassland ecosystems indicated that the three processes examined were the main contributors to C_(seq),with the changes in C:N ratios in soil,litter and vegetation as the major contributors,followed by N redistribution,whilst a decrease in total N had a negative effect on C_(seq).These results indicate that elevated temperatures have a signifcant infuence on grassland C and N stocks and their coupling processes,suggesting that ecological models need to include C–N interactions for more accurate predictions of future terrestrial C storage.

关键词： climate change carbon sequestration carbon–nitrogen interactions grasslands nitrogen limitation stoichiometry

Elastic Optimization for Stragglers in Edge Federated Learning

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Big Data Mining and Analytics 2023年第4期6卷 404-420页

作者： Khadija Sultana Khandakar Ahmed bruce Gu Hua Wang Institute for Sustainable Industries and Liveable Cities(ISILC) Victoria UniversityMelbourne 3011Australia Intelligent Technology Innovation Lab(ITIL) Institute for Sustainable Industries and Liveable Cities(ISILC)Victoria UniversityMelbourne 3011Australia. Shandong Computer Science Center(National Supercomputer Center) Jinan 250101China

To fully exploit enormous data generated by intelligent devices in edge computing,edge federated learning(EFL)is envisioned as a promising *** distributed collaborative training in EFL deals with delay and privacy issues compared to traditional centralized model ***,the existence of straggling devices,responding slow to servers,degrades model *** consider data heterogeneity from two aspects:high dimensional data generated at edge devices where the number of features is greater than that of observations and the heterogeneity caused by partial device *** large number of features,computation overhead on the devices increases,causing edge devices to become *** incorporation of partial training results causes gradients to be diverged which further exaggerates when more training is performed to reach local *** this paper,we introduce elastic optimization methods for stragglers due to data heterogeneity in edge federated ***,we define the problem of stragglers in ***,we formulate an optimization problem to be solved at edge *** customize a benchmark algorithm,FedAvg,to obtain a new elastic optimization algorithm(FedEN)which is applied in local training of edge *** mitigates stragglers by having a balance between lasso and ridge penalization thereby generating sparse model updates and enforcing parameters as close as to local *** have evaluated the proposed model on MNIST and CIFAR-10 *** experiments demonstrate that our approach improves run time training performance by achieving average accuracy with less communication *** results confirm the improved performance of our approach over benchmark algorithms.

关键词： edge computing federated learning distributed machine learning regularization stragglers