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适合中国3G TD-SCDMA标准的数字前端解决方案

作者： (英)蒂姆·詹姆斯(tim james)

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电子设计技术 EDN CHINA 2007年第10期14卷 98-98,100,102页

作者： tim james David Kenyon Sam Chalmers 温得敏 Multiple Access Communications Limited公司赛灵思公司

时分同步码分多址（time Division-Syn-chronous Code Division Multiple Access）是中国自主研发的第三代蜂窝通信标准,也是两个3GPP时分蜂窝标准之一（另一个是TD-CDMA）。TD-SCDMA与同类标准不同之处在于码片速率低，并且上行链路提... 详细信息

时分同步码分多址（time Division-Syn-chronous Code Division Multiple Access）是中国自主研发的第三代蜂窝通信标准,也是两个3GPP时分蜂窝标准之一（另一个是TD-CDMA）。TD-SCDMA与同类标准不同之处在于码片速率低，并且上行链路提供时间同步传输能力。中国目前在这一标准的研发方面已经进行了大量投资，到目前为止已经成功建设了多个测试和试验网络。一旦中国颁发3G牌照，相信TD-SCDMA网络会很快实现部署。

关键词： TD-SCDMA标准 3GPP 中国数字前端时分同步码分多址 Division Multiple CDMA网络

Score-based denoising for atomic structure identification

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npj Computational Materials 2024年第1期10卷 1641-1653页

作者： tim Hsu Babak Sadigh Nicolas Bertin Cheol Woo Park james Chapman Vasily Bulatov Fei Zhou Lawrence Livermore National Laboratory LivermoreCAUSA.2Boston UniversityBostonMAUSA

We propose an effective method for removing thermal vibrations that complicate the task of analyzing complex dynamics in atomistic simulation of condensed *** method iteratively subtracts thermal noises or perturbations in atomic positions using a denoising score function trained on synthetically noised but otherwise perfect crystal *** resulting denoised structures clearly reveal underlying crystal order while retaining disorder associated with crystal *** geometric,agnostic to interatomic potentials,and trained without inputs from explicit simulations,our denoiser can be applied to simulation data generated from vastly different interatomic *** denoiser is shown to improve existing classification methods,such as common neighbor analysis and polyhedral template matching,reaching perfect classification accuracy on a recent benchmark dataset of thermally perturbed structures up to the melting *** here in a wide variety of atomistic simulation contexts,the denoiser is general,robust,and readily extendable to delineate order from disorder in structurally and chemically complex materials.

关键词： crystal perfect atomic

Transarterial chemoembolization and bland embolization for hepatocellular carcinoma

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World Journal of Gastroenterology 2014年第12期20卷 3069-3077页

作者： Emmanuel A Tsochatzis Evangelia Fatourou james O'Beirne tim Meyer Andrew K Burroughs Sheila Sherlock Liver Centre Royal Free Hospital and UCL Institute of Liver and Digestive Health Department of Oncology Royal Free Hospital and UCL

Transarterial chemoembolization(TACE)is the first line treatment for patients with intermediate stage hepatocellular carcinoma but is also increasingly being used for patients on the transplant waiting list to prevent further tumor *** its widespread use,TACE remains an unstandardized procedure,with variation in type and size of embolizing particles,type and dose of chemotherapy and interval between *** evidence from randomized controlled trials suggest that bland transarterial embolization(TAE)has the same efficacy with *** the current article,we review the use of TACE and TAE for hepatocellular carcinoma and we focus on the evidence for their use.

关键词： Cirrhosis Hepatocellular carcinoma Mortality Embolization Transarterial chemoembolization Transarterial embolization Prognosis

The Evolution of Mechanisms Underlying Behaviour

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Current Zoology 2015年第2期61卷 221-225页

作者： tim W. FAWCETT james A. R. MARSHALL Andrew D. HIGGINSON Guest Editors Modelling Animal Decisions (MAD) Group School of Biological Sciences University of Bristol 24 Tyndall Avenue Bristol BS8 1TQ United Kingdom Department of Computer Science University of Sheffield Regent Court 211 Portobello Sheffield S 1 4DP United Kingdom

1 Tinbergen＇s Vision More than any other single work, Niko Tinbergen＇s landmark paper ＂On aims and methods of ethology＂（Tinbergen, 1963） shaped the scientific study of animal behaviour and continues to be a guiding influence on the field （Manning, 2009; Barrett et al., 2013; Bateson and Laland, 2013; Dawkins, 2014; Strassmann, 2014; Taborsky, 2014）. Building on the work of Huxley （1942）, Tinbergen identified four broad, complementary questions we can ask about a behaviour.

关键词：行为学演变底层机制行为科学贝特森赫胥黎动物

Efficient and interpretable graph network representation for angle-dependent properties applied to optical spectroscopy

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npj Computational Materials 2022年第1期8卷 1434-1442页

作者： tim Hsu Tuan Anh Pham Nathan Keilbart Stephen Weitzner james Chapman Penghao Xiao S.Roger Qiu Xiao Chen Brandon C.Wood Center for Applied Scientific Computing Lawrence Livermore National LaboratoryLivermoreCAUSA Materials Science Division Lawrence Livermore National LaboratoryLivermoreCAUSA Department of Physics and Atmospheric Science Dalhousie UniversityHalifaxNSCanada

Graph neural networks are attractive for learning properties of atomic structures thanks to their intuitive graph encoding of atoms and ***,conventional encoding does not include angular information,which is critical for describing atomic arrangements in disordered *** this work,we extend the recently proposed ALIGNN(Atomistic Line Graph Neural Network)encoding,which incorporates bond angles,to also include dihedral angles(ALIGNN-d).This simple extension leads to a memory-efficient graph representation that captures the complete geometry of atomic ***-d is applied to predict the infrared optical response of dynamically disordered Cu(II)aqua complexes,leveraging the intrinsic interpretability to elucidate the relative contributions of individual structural *** and dihedral angles are found to be critical contributors to the fine structure of the absorption response,with distortions that represent transitions between more common geometries exhibiting the strongest absorption *** directions for further development of ALIGNN-d are discussed.

关键词： representation disordered absorption

Influence of bladder neck suspension stitches on early continence after radical prostatectomy： a prospective randomized study of 180 patients

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Asian Journal of Andrology 2011年第6期13卷 806-811页

作者： Jens-Uwe Stolzenburg Martin Nicolaus Panagiotis Kallidonis Minh Do Anja Dietel tim Haifner George Sakellaropoulos james Hicks David Nikoleishvili Evangelos Liatsikos Department of Urology University of Leipzig Leipzig 04103 Germany Department of Urology University of Patras Medical School Patras 26500 Greece Department of Medical Physics University of Patras Patras 26500 Greece

Several techniques have been introduced to improve early postoperative continence. In this study, we evaluated the impact of bladder neck （vesicourethral anastomosis） suspension on the outcome of extraperitoneal endoscopic radical prostatectomy （EERPE）. In this research, a total of 180 patients underwent EERPE. Group 1 included patients who underwent nerve-sparing EERPE （nsEERPE）（n=45）, and Group 2 included patients who underwent nsEERPE with bladder neck suspension （BNS, n=45）. Groups 3 （n=45） and 4 （n=45） included patients who received EERPE and EERPE with BNS, respectively. Patients were randomly assigned to receive BNS with their nsEERPE or EERPE procedure. Perioperative parameters were recorded, and continence was evaluated by determining the number and weight of absorbent pads （pad weighing test） on the second day after catheter removal and by a questionnaire 3 months postoperatively. Two days after catheter removal, 11.1% of Group 1, 11.1% of Group 2, 4.4% of Group 3 and 8.9% of Group 4 were conti nent. The average urine loss was 80.4, 70.1, 325.0 and 291.3 g for the each of these groups, respectively. At 3 months, 76.5% of Group I and 81.3% of Group 2 were continent. The continence figures for Group 3 and 4 were 48.5% and 43.8%, respectively. Similar overall rates were observed in all groups. In conclusion, although there are controversial reports in the literature, early continence was never observed to be significantly higher in the BNS groups when compared with the non-BNS groups, regardless of the EERPE technique performed.

关键词： bladder suspension extraperitoneal endoscopic radical prostatectomy nerve-sparing positive surgical margins prostatectomy vesicourethral anastomosis

Economic Assessment and Review of Waterless Fracturing Technologies in Shale Resource Development: A Case Study

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Journal of Earth Science 2017年第5期28卷 933-948页

作者： Iman Oraki Kohshou Reza Barati Meaghan Cassey Yorro tim Leshchyshyn Adebola T. Adejumo Usman Ahmed Imre Kugler Murray Reynolds james McAndrew University of Wyoming Department of Petroleum Engineering Laramie WY 82071 USA Department of Chemical & Petroleum Engineering University of Kansas Lawrence KS 66045 USA Forum Energy Technologies Houston TX 77024 USA FracKnowledge//Fracturing Horizontal Well Completions Inc. Calgary AB 72G 0X8 Canada Halliburton Houston TX 77032 USA Unconventional Oil and Gas technology and Development and WellDog Laramie WY 82070 USA IHS Markit Houston TX 77077 USA Ferus Calgary AB T2P 3C5 Canada AirLiquide Greater Philadelphia Area Philadelphia 19019 USA

Our database tracking of USA water usage per well indicates that traditionally shale operators have been using, on average 3 to 6 million gallons of water; even up to 8 million for the en- tire life cycle of the well based on its suitability for re-fracturing to stimulate their long and lateral ho- rizontal welis. According to our data, sourcing, storage, transportation, treatment, and disposal of this large volume of water could account for up to 10% of overall drilling and completion costs. With in- creasingly stringent regulations governing the use of fresh water and growing challenges associated with storage and use of produced and flowback water in hydraulic fracturing, finding alternative sources of fracturing fluid is already a hot debate among both the scientific community and industry experts. On the other hand, waterless fracturing technology providers claim their technology can solve the concerns of water availability for shale development. This study reviews high-level technical issues and opportunities in this challenging and growing market and evaluates key economic drivers behind water management practices such as waterless fracturing technologies, based on a given shale gas play in the United States and experience gained in Canada. Water costs are analyzed under a variety of scenarios with and without the use of （fresh） water. The results are complemented by surveys from several oil and gas operators. Our economic analysis shows that fresh water usage offers the greatest economic return. In regions where water sourcing is a challenge, however, the short-term economic advantage of using non-fresh water-based fracturing outweighs the capital costs required by waterless fracturing methods. Until waterless methods are cost competitive, recycled water usage with low treatment offers a similar net present value （NPV） to that of sourcing freshwater via truck, for in- stance.

关键词： shale gas gas exploration fracturing techology fracturing fluid waterless fracturing.

Refining pathological evaluation of neoadjuvant therapy for adenocarcinoma of the esophagus

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World Journal of Gastroenterology 2013年第48期19卷 9282-9293页

作者： Fergus Noble Luke Nolan Adrian C Bateman james P Byrne Jamie J Kelly Ian S Bailey Donna M Sharland Charlotte N Rees timothy J Iveson tim J Underwood Andrew R Bateman Cancer Sciences Unit Faculty of Medicine University of Southampton Southampton SO16 6YD United Kingdom Department of Surgery University Hospital Southampton NHS Foundation Trust Southampton SO16 6YD United Kingdom Department of Cellular Pathology University Hospital Southampton NHS Foundation Trust Southampton SO16 6YD United Kingdom Cancer Care University Hospital Southampton NHS Foundation Trust Southampton SO16 6YD United Kingdom

AIM:To assess tumour regression grade(TRG)and lymph node downstaging to help define patients who benefit from neoadjuvant ***:Two hundred and eighteen consecutive patients with adenocarcinoma of the esophagus or gastro-esophageal junction treated with surgery alone or neoadjuvant chemotherapy and surgery between 2005and 2011 at a single institution were *** neoadjuvant chemotherapy consisting of platinum,fluoropyrimidine and anthracycline was considered for operable patients(World Health Organization performance status≤2)with clinical stage T2-4 *** to neoadjuvant chemotherapy(NAC)was assessed using TRG,as described by Mandard et *** addition lymph node downstaging was also *** node downstaging was defined by cN1 at diagnosis:assessed radiologically(computed tomography,positron emission tomography,endoscopic ultrasonography),then pathologically recorded as N0 after surgery;ypN0 if NAC given prior to surgery,or pN0if surgery *** were followed up for 5 years post *** was defined radiologically,with or without pathological *** association was examined between t TRG and lymph node downstaging with disease free survival(DFS)and a comprehensive range of clinicopathological ***:Two hundred and eighteen patients underwent esophageal resection during the study interval with a mean follow up of 3 years(median follow up:2.552,95%CI:2.022-3.081).There was a 1.8%(n=4)inpatient mortality *** hundred and thirty-six(62.4%)patients received NAC,with 74.3%(n=101)of patients demonstrating some signs of pathological tumour regression(TRG 1-4)and 5.9%(n=8)having a complete pathological *** four point one percent(n=60)had downstaging of their nodal disease(cN1 to ypN0),compared to only 15.9%(n=13)that underwent surgery alone(pre-operatively overstaged:cN1 to pN0),(P<0.0001).Response to NAC was associated with significantly increased DFS(mean DFS;TRG 1-2:5.1years,

关键词： Esophageal cancer Gastro-esophageal cancer Neoadjuvant Regression

Virtual reality based multiple life skill training for intellectual disability:A multicenter randomized controlled trial

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Engineered Regeneration 2022年第2期3卷 121-130页

作者： james Chung-Wai Cheung Ming Ni Andy Yiu-Chau Tam tim Tin-Chun Chan Alyssa Ka-Yan Cheung Ocean Yu-Hong Tsang Chi-Bun Yip Wing-Kai Lam Duo Wai-Chi Wong Department of Biomedical Engineering Faculty of EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China Research Institute for Smart Ageing The Hong Kong Polytechnic UniversityHong Kong 999077China Jockey Club Smart Ageing Hub Department of Biomedical EngineeringFaculty of EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China Department of Orthopaedics Pudong New Area People’s Hospital Affiliated to Shanghai Jiaotong UniversityShanghai 201299China Social Service Department Yan Chai HospitalHong Kong 999077China C2 Innovations and Research Limited Hong Kong 999077China Department of Kinesiology Shenyang Sport UniversityShenyang 110102China Sports Information and External Affairs Centre Hong Kong Sports InstituteHong Kong 999077China

Life skill-based training is essential for intellectual disabled individuals to regain autonomy and social *** reality(VR)could deliver a nascent application that is more engaging and *** objective of this study was to evaluate the training effects of the VR-based multiple life skill training program on life skill perfor-mance,self-efficacy,memory,cognitive and behavioral functions via a multicenter randomized controlled trial.A total of 145 intellectual disabled participants were recruited for a randomized controlled trial with three in-tervention arms:VR(n=42);traditional(n=53);and control(n=50).The life skill tasks for the interventions included 1)grocery shopping,2)cooking,and 3)kitchen *** measures were performance scores for the three tasks,self-efficacy scale,digit span score,and Frontal Assessment Battery score,graded by blinded ***-after effects of each group were evaluated using separated Wilcoxon Signed-rank *** sig-nificantly improved cooking,cleaning performance,and memory span,while traditional training significantly improved shopping,cooking,and cleaning *** generalized estimating equation evaluated effects between groups adjusted for age,gender and intelligence quotient(IQ).VR had significantly larger improvement effects in cooking and cleaning than the control group and memory span compared to traditional training and controls *** appeared to be a significant confounder on the training *** work may consider developing artificial intelligence to customize programs depending on IQ level.

关键词： Mental retardation Intellectual development X-reality Immersive rehabilitation Metaverse