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Automated Burris gravity meter for single and continuous observation

Geodesy and Geodynamics 2018年第3期9卷 204-209页

作者： Gerhard Jentzsch Richard Schulz adelheid weise Gravity Consult GmbH^1 Bonn(formerly Institute of GeosciencesApplied GeophysicsFriedrich-Schiller-University Jena)Annettenstr.2D-53175BonnGermany Applied Gravity Dr.H.Richard Schulz Steg 8D-74538RosengartenGermany Institute of Geosciences General GeophysicsFriedrich-Schiller-University JenaBurooweg 11D-07749JenaGermany

The Burris Gravity MeterTM manufactured by ZLS Corporation, Austin/Texas, USA, is based on the in- vention of L^R （L. LaCoste and A. Romberg）： The ZLS （zero-length spring）. A digital feedback system （range of about 50 mGal） is used to null the beam. Now, more than 120 gravity meters of this make exist worldwide and are used successfully in exploration, volcanology, geodetic work and surveying. The sensor is made of the well-known （L＆R） metal-alloy zero-length spring providing a low drift characteristic. The drifts observed are comparable to L＆R gravimeters and are less than 0.3 mGal per month, which is much lower than the drifts known for the fused quartz sensors. The dial is calibrated every 50 regal over the entire 7000 mGal meter range. Since the gravity value is determined at these points, there are no periodic errors. By a fourth heater circuit temperature effects are totally avoided. The gravity meter is controlled via Bluetoothce either to a handheld computer （tablet） or a notebook computer. The feedback responds with high stability and accuracy. The hulling of the beam is controlled by the UltraGravTM control system which incorporates an inherently linear PWM （pulse-width modulated） electrostatic feedback system. In order to improve the handling of the gravimeter we have developed two Windows based programs： AGESfield for single measurements and AGEScont for continuous readings.

关键词： Gravimeter Micro-gravity measurements Drift Resolution Single and continuous observations

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Endoscopic submucosal dissection and endoscopic mucosal resection for esophageal and gastric lesions:A comparison of procedures

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Laparoscopic, Endoscopic and Robotic Surgery 2024年第2期7卷 66-71页

作者： Gustav Holm Schæbel Andreas weise Mucha Charlotte Egeland Michael Patrick Achiam Department of Surgery and Transplantation Copenhagen University Hospital RigshospitaletBlegdamsvej 92100 CopenhagenDenmark

Objective Esophageal and gastric lesions are effectively managed with minimally invasive upper endoscopic procedures such as endoscopic mucosa resection(EMR)and endoscopic submucosal dissection(ESD),offering patients alternatives to invasive *** ESD is well established in Eastern Asia,its adoption in Denmark for superficial esophageal cancer is *** study presents real-world data on the feasibility,safety,and hospitalization duration associated with ESD and EMR for esophageal and gastric *** A retrospective analysis was conducted on patients who underwent ESD or EMR at a specialized center in Denmark from October 2016 to June *** on treatment,indication,lesion location,hospitalization duration,procedure duration,specimen size,complications,recurrence,and one-year overall survival were *** comparisons utilized the Mann-Whitney U test,independent sample median test,and chi-squared *** The study included 130 patients(144 procedures):72 underwent ESD and 58 underwent *** with EMR,ESD resulted in greater percentages of en bloc and R0 resections(98.8%vs.64.1%,p<0.001;and 83.9%vs.23.8%,p<0.001),greater complication rates(28.7%vs.3.1%,p<0.001)and longer procedure times(119.5 min vs.37.0 min,p<0.001).The ESD procedure time significantly decreased over time(p=0.01).The local recurrence rates were 14.5%for ESD and 23.8%for EMR(p=0.767).The one-year overall survival rates were similar between the groups(95.8%vs.94.8%,p=0.553).Conclusion Both ESD and EMR are safe and viable for treating esophageal and gastric *** offers advantages but requires more time and *** findings support the literature,emphasizing the importance of considering patient-specific factors and surgeon proficiency in selecting the appropriate procedure.

关键词： Endoscopic submucosal dissection Endoscopic mucosa resection Gastroesophageal cancer Real-world data

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Evolutionary Optimization: Pitfalls and Booby Traps

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Journal of Computer Science & Technology 2012年第5期27卷 907-936页

作者： Thomas weise Raymond Chiong Ke Tang Nature Inspired Computation and Applications Laboratory School of Computer Science and Technology University of Science and Technology of China Hefei 230027 China Faculty of Higher Education Swinburne University of Technology 50 Melba Avenue Lilydale Victoria 3140 Australia

Evolutionary computation （EC）, a collective name rithms, is one of the fastest-growing areas in computer science. for a range of metaheuristic black-box optimization algo- Many manuals and ＂how-to＇s on the use of different EC methods as well as a variety of free or commercial software libraries are widely available nowadays. However, when one of these methods is applied to a real-world task, there can be many pitfalls and booby traps lurking certain aspects of the optimization problem that may lead to unsatisfactory results even if the algorithm appears to be correctly implemented and executed, These include the convergence issues, ruggedness, deceptiveness, and neutrality in the fitness landscape, epistasis, non-separability, noise leading to the need for robustness, as well as dimensionality and scalability issues, among others. In this article, we systematically discuss these related hindrances and present some possible remedies. The goal is to equip practitioners and researchers alike with a clear picture and understanding of what kind of problems can render EC applications unsuccessful and how to avoid them from the start.

关键词： evolutionary computing problem difficulty optimization meta-heuristics

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Carbonates as Foaming Agent in Chip-based Aluminium Foam Precursor

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Journal of Materials Science & Technology 2010年第9期26卷 845-850页

作者： Marco Haesche Dirk Lehmhus Jrg weise Manfred Wichmann Irene Cristina Magnabosco Mocellin University of Bremen Fraunhofer IFAM Federal University of Santa Catarina Florianópolis

Replacement of TiH2 as foaming agent by CaCO3（lime） and CaMg（CO3）2（dolomite） for AlMg4.5-and AlSi9Cu3-foams was investigated considering inluences on foaming capability and cellular *** materials were produced from alloy chip and powder mixtures by means of the thixocasting ***9Cu3 variants showed expansion levels suffcient for commercial *** in expansion observed when CaCO3 and CaMg（CO3）2 were compared as foaming agent are explained based on the course of *** performance of dolomite-based foams relies on formation of stabilizing MgO phases,which do not develop during decomposition of CaCO3 in Al-Si-Cu alloys

关键词： Aluminium foam Foaming agent Calcium carbonate Dolomite Stabilisation

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Fast Online Diagnosis of Open-circuit Switching Faults in Flying Capacitor Multilevel Inverters

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Chinese Journal of Electrical Engineering 2020年第4期6卷 53-62页

作者： Majid T.Fard Waqar A.Khan Jiangbiao He Nathan weise Mostafa Abarzadeh Department of Electrical and Computer Engineering University of KentuckyLexingtonKY 40506USA Department of Electrical and Computer Engineering Marquette UniversityMilwaukeeWI 53233USA

Flying capacitor multilevel(FCML)inverter is an attractive power converter topology which provides high-quality staircase output voltage waveforms by cascading flying capacitor ***,the large number of semiconductor devices utilized in the FCML inverters degrades the hardware reliability,which may constrain such converters from being applied in safety-critical *** at open-circuit switching faults,a fast online fault diagnostic method for FCML inverters is *** phase-shifted PWM(PSPWM),which can naturally balance the voltage across flying capacitors,is used as the modulation method in this ***,to retain the simplicity feature of the PSPWM,the proposed diagnostic method is developed so that it does not require any voltage measurements of flying *** the output AC voltage and current data along with the switching PWM signals from the microcontroller are needed to detect an open-circuit switching fault,and all such sensory data is typically available in the inverter,requiring no additional sensors or hardware for the implementation of this diagnostic *** detection process takes 5% of the fundamental period of the inverter output signals to diagnose the faulty *** and experimental results are presented to verify the effectiveness of the proposed diagnostic method.

关键词： Open-circuit fault diagnosis flying capacitor multilevel inverter wide bandgap devices PSPWM

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BARKOR STREET:Eyewitness to Changes

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China's Tibet 2001年第1期12卷 27-28页

作者： weise

Dawn in Lhasa; but it seemsthat Barkor Street hasalready been awake longbefore the rest of the *** old street, much renovated, isalready crowded with people, mostlyelderly. Clutching their rosary beads,they chant Budd... 详细信息

关键词： BARKOR STREET:Eyewitness to Changes

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西藏松卡地区饰面用花岗石矿地质特征及初步资源评价

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西藏科技 2024年第2期46卷 26-32,55页

作者：格桑次仁维色坚才边巴次仁洛桑朗杰吕登凯西藏地质矿产勘查开发局区域地质调查大队拉萨851400

松卡矿区位于冈底斯一下察隅火山岩浆弧内,岩浆活动较为频繁,造就了矿区发育大量的岩体。矿区饰面用花岗石矿的赋矿岩石为晚白垩世中-细粒黑云母二长花岗岩,通过系统调查,在矿区内共圈定了7个矿体,矿体出露宽度在50~500m之间,色斑、色... 详细信息

松卡矿区位于冈底斯一下察隅火山岩浆弧内,岩浆活动较为频繁,造就了矿区发育大量的岩体。矿区饰面用花岗石矿的赋矿岩石为晚白垩世中-细粒黑云母二长花岗岩,通过系统调查,在矿区内共圈定了7个矿体,矿体出露宽度在50~500m之间,色斑、色线不发育,节理一般不发育;底色呈灰白色;花色均一稳定;较为清晰;具可拼贴性;属中-低档室内、室外装修石材。通过节理裂隙的统计分析初步查清了矿体内的节理分布特征及节理优势方位:对矿体影响较大的节理倾向优势方位为295°,在290°~300°区间;节理走向优势方位30°,在20°~40°区间。经过矿区内选取的两个面节理素描点(SKMJL1、SKMJL2)计算的荒料率分别为η_(1)=51.10%、η_(2)=44.59%,平均荒料率为48.43%,具有较好的经济潜力。

关键词：松卡矿区饰面用花岗石矿矿体地质特征初步资源评价

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人工智能竞赛是如何开始的?

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世界科学 2024年第6期 57-61页

作者：西岸凯德·梅茨凯伦·怀斯尼科·格兰特迈克·艾萨克《纽约时报》

关于雄心、恐惧和金钱的故事。2015年7月，埃隆·马斯克（Elon Musk）的妻子妲露拉·莱莉（Talulah Riley）在加州纳帕谷举办了一场为期三天的生日派对，庆祝其44岁生日，参加派对的都是他们的亲朋好友。当时马斯克还没有收购推特（Twit...

关于雄心、恐惧和金钱的故事。2015年7月，埃隆·马斯克（Elon Musk）的妻子妲露拉·莱莉（Talulah Riley）在加州纳帕谷举办了一场为期三天的生日派对，庆祝其44岁生日，参加派对的都是他们的亲朋好友。当时马斯克还没有收购推特（Twitter），特斯拉刚实现盈利。马斯克的好朋友、谷歌（Google）首席执行官拉里·佩奇（Larry Page）也被邀请参加了派对。两位亿万富翁是十多年的好朋友。马斯克曾经说过，他偶尔会去佩奇家里通宵打游戏，困了就在沙发上呼呼大睡。

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来源：博看期刊

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Pregnant Women Eating Too Much Fish

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当代外语研究 2004年第5期 6-7页

作者： Elizabeth weise 卞绣琴中南大学

怀孕期间,母亲的营养很重要。鱼因其营养丰富而大受孕妇们青睐。但美国环保署的一项研究表明,遭到直接、间接污染的鱼类是胎儿健康的隐性杀手:women who ate fish and／or shellfish at least twice a week had blood mercuryconcentrat... 详细信息

怀孕期间,母亲的营养很重要。鱼因其营养丰富而大受孕妇们青睐。但美国环保署的一项研究表明,遭到直接、间接污染的鱼类是胎儿健康的隐性杀手:women who ate fish and／or shellfish at least twice a week had blood mercuryconcentrations seven times higher than women who didn't eat fish in the previousmonth.读完此文后,孕妇们在吃鱼之前可能要三思:To eat or not to eat,that isthe question.(吃还是不吃,这是个问题。)

关键词：美国环保署 Pregnant Women Eating Too Much Fish

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Impact of Vector-Current Interactions on the QCD Phase Diagram

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Journal of Modern Physics 2013年第5期4卷 644-650页

作者： Thomas Hell Kouji Kashiwa Wolfram weise Physik Department Technische Universitat MünchenGarchingGermany ECT* Strada delle Tabarelle 286VillazzanoTrentoItaly RIKEN/BNL Research Center Brookhaven National LaboratoryUptonUSA

Using a nonlocal version of the Polyakov-loop-extended Nambu-Jona-Lasinio model, we investigate effects of a nonderivative vector-current interaction (relating to the quark-number density) at both real and imaginary chemical potentials. This repulsive vector interaction between quarks has the following impact on the chiral first-order phase transition: at imaginary chemical potential it sharpens the transition at the Roberge-Weiss (RW) end point and moves this critical point toward lower temperatures;at real chemical potential, the critical end point moves on a trajectory towards larger chemical potentials and lower temperatures with increasing vector coupling strength. The conditions are discussed at which the first-order phase transition disappears and turns into a smooth crossover.

关键词： QCD Phase Diagram PNJL Model

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