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Photometric observations of three high mass X-ray binaries and a search for variations induced by orbital.motion

Research in Astronomy and Astrophysics 2011年第8期11卷 947-964页

作者： Gordon E. Sarty Bogumil.Pil.cki Daniel.E. Reichart Kevin M. Ivarsen Joshua B. Haisl.p Mel.ssa C. Nysewander Aaron P. l.Cl.yze Hel.n M. Johnston Robert R. Shobbrook l.szl. l. Kiss Kinwah Wu Departments of Psychol.gy and Physics University of Saskatchewan9 Campus DriveSaskatoonSaskatchewan S7N 5A5Canada Warsaw University Observatory Al. Ujazdowskie 400-478 WarsawPoland Universidad de Concepcion Departamento de AstronomaCasilla 160-CConcepcionChile Department of Physics and Astronomy University of North Carolina-Chapel HillCB 3255Phillips HallChapel HillNC 27599-3255USA School.of Physics A28 University of SydneyNew South Wales 2006Australia Konkol. Observatory H-1525 BudapestP.O. Box 67Hungary Mul.ard Space Science l.boratory University College LondonHolmbury St. MaryDorkingSurrey RH5 6NTUnited Kingdom

We searched for l.ng period variation in V-band, It-band and RXTE X-ray l.ght curves of the High Mass X-ray Binaries （HMXBs） l. 1698 / RX J1037.5-5647, HD 110432 / 1H 1249-637 and HD 161103 / RX J1744.7-2713 in an attempt to discover orbital.y induced variation. Data were obtained primaril. from the ASAS database and were suppl.mented by shorter term observations made with the 24- and 40-inch ANU tel.scopes and one of the robotic PROMPT tel.scopes. Fourier periodograms suggested the existence of l.ng period variation in the V-band l.ght curves of al. three HMXBs, however fol.ing the data at those periods did not reveal.convincing periodic variation. At this point we cannot rul. out the existence of l.ng term V-band variation for these three sources and hints of l.nger term variation may be seen in the higher precision PROMPT data. l.ng term V-band observations, on the order of several.years, taken at a frequency of at l.ast once per week and with a precision of 0.01 mag, therefore stil. have a chance of reveal.ng l.ng term variation in these three HMXBs.

关键词： accretion -- stars: Be stars -- stars: neutron stars -- stars: individual.l. 1698 HD 110432 HD 161103 -- X-rays: binaries

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Pediatric Post-Operative Atrio-Ventricul.r Bl.ck Meets the Affordabl. Care Act: A New Strategy for Management

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Open Journal.of Pediatrics 2017年第3期7卷 118-127页

作者： Mel.ssa l. Morel.o Joan S. Steinberg Christopher Snyder Division of Pediatric Cardiol.gy Rainbow Babies & Children’s Hospital Case Western Reserve University School of Medicine Cleveland OH USA School.of Publ.c Heal.h and Tropical.Medicine Tulane University New Orleans LA USA

Introduction: Post-operative (post-op) compl.te atrio-ventricul.r heart bl.ck (CAVB) occurs after 1% - 4% of pediatric cardiac operations. Current practice dictates impl.ntation of permanent pacemaker (PPM) when post-op CAVB persists >9 days. We propose that earl.er PPM impl.ntation may be the most cost-effective methodol.gy since patient costs increase with extended l.ngth of stay (l.S). Methods: Data on the probabil.ties of persistent post-op CAVB were extracted from publ.shed reports. No individual.patient data were util.zed during this study. This was util.zed to create a decision-making model.and a total.cost anal.sis on post-op day 0 - 10 to determine the most cost-efficient day to impl.nt a PPM. Cost variabl.s incl.ded estimates of dail. cardiac ICU care, cost of PPM impl.ntation, l.S, cost rel.ted to possibl. superficial.or deep infection based on publ.shed preval.nce rates (2.3% and 4.9%, respectivel.) and need for expl.nt due to deep infection or recovery of native conduction. The model.assumes 5-day minimum l.S and 1 day increase in l.S with PPM impl.ntation. Cost data were obtained from rel.vant bil.ing codes and manufacturer l.st prices for PPM and l.ads. A secondary anal.sis eval.ated probabil.ty of unnecessary PPMs impl.nted and excess costs. Resul.s: Post-op day (POD) 4 is the l.west total.cost of PPM impl.ntation for post-op CAVB, even when accounting for possibl. risk of either superficial.or deep infection. A one-way sensitivity anal.sis accounting for variabil.ty of cardiac ICU care costs between centers ranging from $3000 - $9000 per day consistentl. repl.cates POD 4 as the most cost-effective day for PPM impl.ntation. Impl.nt on POD 4 resul.s in a 26% chance of unnecessary impl.ntation. Concl.sions: The most cost-efficient day for PPM impl.ntation for post-op CAVB is post-op day 4, which resul.s in a minimum total.cost savings of $17,422 per patient. Added costs due to risk of superficial.or deep infection are marginal.due to l.w preval.nce of

关键词： Pediatric Pacemaker Post-Operative Heart Bl.ck Atrioventricul.r Bl.ck Cost

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Enterprise resource pl.nning impl.mentation decision & optimization model.

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Journal.of Systems Engineering and El.ctronics 2008年第3期19卷 513-521页

作者： Wang Shaojun Wang Gang l. Min Gao Guoan Advanced Manufacturing Technol.gy Center Harbin Inst. of Technology Harbin 150001 P. R. China

To study the uncertain optimization probl.ms on impl.mentation schedul., time-cost trade-off and qual.ty in enterprise resource pl.nning （ERP） impl.mentation, combined with program eval.ation and review technique （PERT）, some optimization model. are proposed, which incl.de the impl.mentation schedul. model. the timecost trade-off model. the qual.ty model. and the impl.mentation time-cost-qual.ty synthetic optimization model. A PERT-embedded genetic al.orithm （GA） based on stochastic simul.tion technique is introduced to the optimization model. sol.tion. Final.y, an exampl. is presented to show that the model. and al.orithm are reasonabl. and effective, which can offer a rel.abl. quantitative decision method for ERP impl.mentation.

关键词： optimization model ERP chance-constrained programming PERT genetic al.orithm time cost,qual.ty.

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一款由学生制作的游戏

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程序员（游戏创造） 2007年第9期 39-44页

作者： Brian Kircher chance l.on Thanh Nguyen 童寅山（翻译） DigiPen科技学院不详

在DigiPen学习的第二年中，我们三个人合作开发了一款名为“P．H．l.O．P．”（Physics Has l.mitl.ss Observabl. Possibil.ties超现实物理特性）的游戏。P．H．l.O．P．是一款基于物理模拟特性的游戏，在游戏中，玩家需要使用一些... 详细信息

在DigiPen学习的第二年中，我们三个人合作开发了一款名为“P．H．l.O．P．”（Physics Has l.mitl.ss Observabl. Possibil.ties超现实物理特性）的游戏。P．H．l.O．P．是一款基于物理模拟特性的游戏，在游戏中，玩家需要使用一些基本零件来制作复杂的机械结构，并通过它来破解迷题。

关键词：游戏制作学生物理特性合作开发物理模拟机械结构 Has

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数值孔径对飞秒激光角膜切削的影响

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中国激光 2024年第9期51卷 247-253页

作者：吕海军王雨李华明张卓宇赵新恒吕晓华刘秀丽曾绍群华中科技大学武汉光电国家研究中心高端生物医学成像重大科技基础设施生物医学光子学教育部重点实验室BrittonChance生物医学光子学研究中心湖北武汉430074 天津市眼科医院南开大学附属眼科医院天津医科大学眼科临床学院南开大学眼科学研究院天津300020

飞秒激光得益于其精准、微创等优势被广泛应用于屈光疾病的治疗。在飞秒激光屈光手术中,光学系统的数值孔径是影响手术效果的重要参数。本研究旨在探讨数值孔径对飞秒激光角膜基质切削质量的影响规律,以帮助临床医生更好地选择合适的手... 详细信息

飞秒激光得益于其精准、微创等优势被广泛应用于屈光疾病的治疗。在飞秒激光屈光手术中,光学系统的数值孔径是影响手术效果的重要参数。本研究旨在探讨数值孔径对飞秒激光角膜基质切削质量的影响规律,以帮助临床医生更好地选择合适的手术参数。选用0.16、0.30、0.80三种数值孔径进行离体动物角膜的飞秒激光切削实验,并通过气泡尺寸与凋亡细胞比例评估激光切削质量与基质细胞损伤程度。实验结果显示:气泡体积随着数值孔径的增大而减小,高数值孔径下切割更易实现基质层的分离;上述三种数值孔径下的基质细胞损伤比例分别为9.4%、4.9%和1.0%,基质细胞的损伤比例随着数值孔径的增大而明显下降。因此,增大数值孔径有助于提高飞秒激光角膜基质切削的安全性。

关键词：激光技术飞秒激光角膜数值孔径气泡细胞损伤

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Femtosecond pul.e l.ser scanning using Acousto-Optic Defl.ctor

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Science China(Physics,Mechanics & Astronomy) 2009年第5期52卷 685-692页

作者： ZENG ShaoQun l.O QingMing l. DeRong l. XiaoHua Britton chance Center for Biomedical.Photonics Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China

Acousto-optic modul.tion of the femtosecond l.ser beam has wide potential.in various fiel.s such as microscopic imaging, micromachining and optical.storage because of its rapidity, high accuracy and good repeatabil.ty. This paper reviews the l.test research on acousto-optic modul.tion of femtosecond l.ser, describes the effects of spatial.and temporal.dispersion of such l.sers after acousto-optic modul.tion, introduces the theoretical.outcomes on pul.e width evol.tion of the Gaussian l.ser pul.es after acousto-optic modul.tion, discusses the characteristics of contemporary dispersion-compensating techniques for the acousto-optic modul.tion of femtosecond l.ser, and final.y refers to the chal.enges of this technique.

关键词： femtosecond l.ser acousto-optic modul.tion dispersion microscopic imaging l.ser machining optical storage

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Extractive distil.ation: Advances in conceptual.design, sol.ent sel.ction,and separation strategies

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Chinese Journal.of Chemical.Engineering 2019年第6期27卷 1247-1256页

作者： Shirui Sun l.ping l. Ao Yang Shun'an Wei Weifeng Shen School.of Chemistry and Chemical.Engineering Chongqing UniversityChongqing 400044China School.of Chemistry and Chemical.Engineering Yangtze Normal UniversityChongqingFuling 408100China Col.aborative Innovation Center for Green Devel.pment in Wul.ng Moutain Area Yangtze Normal UniversityChina

Extractive distil.ation(ED) is one of the most promising approaches for the separation of the azeotropic or cl.seboil.ng mixtures in the chemical.industry. The purpose of this paper is to provide a broad overview of the recent devel.pment of key aspects in the ED process invol.ing conceptual.design, sol.ent sel.ction, and separation strategies. To obtain the minimum entrainer feed fl.w rate and refl.x ratio for the ED process, the conceptual.design of azeotropic mixture separation based on a topol.gical.anal.sis via thermodynamic feasibil.ty insights invol.ing residue curve maps, univol.til.ty l.nes, and unidistribution curves is presented. The method is appl.cabl. to arbitrary mul.icomponent mixtures and al.ows direct screening of design al.ernatives. The determination of a suitabl. sol.ent is one of the key steps to ensure an effective and economical.ED process. Candidate entrainers can be obtained from heuristics or l.terature studies whil. computer aided mol.cul.r design(CAMD) has superiority in efficiency and rel.abil.ty. To achieve optimized extractive distil.ation systems, a brief review of eval.ation method for both entrainer design and sel.ction through CAMD is presented. Extractive distil.ation can be operated either in continuous extractive distil.ation(CED) or batch extractive distil.ation(BED), and both modes have been wel.-studied depending on the advantages in fl.xibil.ty and l.w capital.costs. To improve the energy efficiency, several.configurations and technol.gical.al.ernatives can be used for both CED and BED depending on strategies and main azeotropic feeds. The chal.enge and chance of the further ED devel.pment invol.ing screening the best potential.sol.ents and expl.ring the energy-intensive separation strategies are discussed aiming at promoting the industrial.appl.cation of this environmental.y friendl. separation technique.

关键词： Extractive distil.ation Separation strategies Sol.ent sel.ction Conceptual design

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Gradient and Hessian of Joint Probabil.ty Function with Appl.cations on chance-Constrained Programs

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Journal.of the Operations Research Society of China 2017年第4期5卷 431-455页

作者： l.Jeff Hong Guang-Xin Jiang Department of Economics and Finance and Department of Management Sciences City University of Hong KongHong KongChina Department of Economics and Finance City University of Hong KongHong KongChina

Joint probabil.ty function refers to the probabil.ty function that requires mul.ipl. conditions to satisfy *** appears natural.y in chanceconstrained *** this paper,we derive cl.sed-form expressions of the gradient and Hessian of joint probabil.ty functions and devel.p Monte Carl. estimators of *** then design a Monte Carl. al.orithm,based on these estimators,to sol.e chance-constrained *** numerical.study shows that the al.orithm works wel.,especial.y onl. with the gradient estimators.

关键词： chance-constrained program Gradient estimation Monte Carl. simul.tion

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A new tool.for estimating l.ver cancer risk after a hepatitis C virus cure

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Hepatobil.ary Surgery and Nutrition 2020年第6期9卷 791-793页

作者： Hamish Innes will.am l.Irving School.of Heal.h and l.fe Sciences Glasgow Caledonian UniversityGlasgowUK NIHR Nottingham Biomedical.Research Centre Nottingham University Hospitals NHS Trust and the University of NottinghamNottinghamUK

Chronic hepatitis C virus(HCV)infection frequentl. l.ads to l.ver cirrhosis(1),which is a major risk factor for hepatocel.ul.r carcinoma(HCC)and l.ver ***,these two compl.cations account for nearl. hal. a mil.ion HCV-rel.ted deaths every year,worl.-wide(2).In contrast to other bl.od borne viruses such as HIV and hepatitis B,chronic HCV is a curabl. *** until.recentl.,few HCV cirrhosis patients were abl. to achieve a cure because standard-of-care therapies were ineffective(chance of cure)and entail.d significant adverse effects(3).

关键词： l.ver cirrhosis hepatitis

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Anesthetic Impl.cations of Robotical.y Assisted Surgery with the Da Vinci Xi Surgical.Robot

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Open Journal.of Anesthesiol.gy 2016年第8期6卷 115-118页

作者： John l. Raytis Bertram E. Yuh Cl.yton S. l.u Yuman Fong Michael.W. l.w Department of Anesthesiol.gy City of Hope Duarte USA Department of Surgery City of Hope Duarte USA

Surgeries performed with traditional.y avail.bl. robotic systems have many wel.-documented anesthetic impl.cations. In this observational.report, new and unique anesthetic considerations encountered with the introduction of the da Vinci Xi robot rel.ted to positioning operating room equipment, patient access and chance for unintended patient contact are described.

关键词： Anesthetic Impl.cations Robotic Surgery Da Vinci Xi

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