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Modelling air change rate of naturally ventilated dairy buildings using response surface methodology and numerical simulation

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Building Simulation 2021年第3期14卷 827-839页

作者： Qianying Yi Guoqiang Zhang Barbara amon Sabrina Hempel David Janke Chayan Kumer Saha Thomas amon Department of Engineering Aarhus UniversitySkejby Nordlandsvej 3018200 AarhusDenmark Department of Engineering for Livestock Management Leibniz Institute for Agricultural Engineering and Bioeconomy(ATB)Max-Eyth-Allee 70014469 PotsdamGermany Department of Technology Assessment and Substance Cycles Leibniz Institute for Agricultural Engineering and Bioeconomy(ATB)Max-Eyth-Allee 10014469 PotsdamGermany Faculty of Civil Engineering Architecture and Environmental EngineeringUniversity ofZielona GoraLicealna 9/965-417 Zielona GoraPoland Department of Farm Power and Machinery Bangladesh Agricultural UniversityBAU Main Road2202 MymensinghBangladesh Institute of Animal Hygiene and Environmental Health Department of Veterinary MedicineFree University BerlinRobert-von-Ostertag-Str.7-1314163 BerlinGermany

The air change rate(ACR)of naturally ventilated dairy buildings(NVDBs)plays an important part in the design and control of the ventilation system,as well as in the estimation of the gaseous emission *** objectives of this research were to model the ACR based on a quantitative investigation of the relationship between the ACR and its potential influencing factors,including the opening ratio(r),the building length to width ratio(a),the wind speed(U),and the wind direction(0).The investigations were performed using the response surface methodology integrated with the Box-Behnken design and Computational Fluid Dynamics(CFD)*** response surface models of the ACR of NVDBs were established for three opening ratio ranges of 5%-42.5%,42.5%-80%,and 5%-80%,*** was found that the selection of the opening ratio range had almost no effect on the developed response surface *** results showed that the ACR of NVDBs was not influenced by a,but was significantly affected by r,U,6,and interaction effects between every two of the three *** highest ACR was 6.7 s^(-1),6.0 s^(-1),and 4.0 s^(-1)when 0,U,and r was at their respective medium value while the rest parameters were at the highest values,indicating that the r played an important role in the value of *** was concluded that in the prediction of the ACR of a building,the influences of both individual and interactional effects of 0,U,and r should be considered.

关键词： emission estimation computational fluid dynamics Box-Behnken design response surface model

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不锈钢扁平材的世界市场概况

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大连特殊钢 1995年第5期 58-64页

作者： paris.,H 邓钧

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与棒的长期机械强度相关的复合悬式绝缘子的额定值

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电瓷避雷器译丛 1996年第2期 76-83,41页

作者： paris.,L 江讯

对线路设计者来说是复合绝缘子所用棒的长期机械强度是一个主要的问题。以前解决解决此问题的办法及标准的要求提出了对棒长期性能的推论，而此推论未经试验结果精确分析证实。于是为负荷－时间关系曲线确定了一个新模型。通过用声波分... 详细信息

对线路设计者来说是复合绝缘子所用棒的长期机械强度是一个主要的问题。以前解决解决此问题的办法及标准的要求提出了对棒长期性能的推论，而此推论未经试验结果精确分析证实。于是为负荷－时间关系曲线确定了一个新模型。通过用声波分析棒在拉应力下的特性和确定物理学上的“损伤极限”来提出破坏进程的数学模型。

关键词：绝缘子额定值机械强度

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Numerical simulation and validation of ocean waves measured by an Along-Track Interferometric Synthetic Aperture Radar

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Chinese Journal of Oceanology and Limnology 2008年第1期26卷 1-8页

作者：张彪何宜军 paris.W.VACHON Institute of Oceanology Chinese Academy of SciencesQingdao 266071 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Canada Centre for Remote Sensing Natural Resources Canada588 Booth Street Ottawa ON K1A 0Y7 Canada

A new nonlinear integral transform of ocean wave spectra into Along-Track Interferometric Synthetic Aperture Radar （ATI-SAR） image spectra is described. ATI-SAR phase image spectra are calculated for various sea states and radar configurations based on the nonlinear integral transform. The numerical simulations show that the slant range to velocity ratio （R/V）, significant wave height to ocean wavelength ratio （Hi2）, the baseline （2B） and incident angle （0） affect ATI-SAR imaging. The ATI-SAR imaging theory is validated by means of Two X-band, HH-polarized ATI-SAR phase images of ocean waves and eight C-band, HH-polarized ATI-SAR phase image spectra of ocean waves. It is shown that ATI-SAR phase image spectra are in agreement with those calculated by forward mapping in situ directional wave spectra collected simultaneously with available ATI-SAR observations. ATI-SAR spectral correlation coefficients between observed and simulated are greater than 0.6 and are not sensitive to the degree of nonlinearity. However, the ATI-SARoPhase image spectral turns towards the range direction, even if the real ocean wave direction is 30. It is also shown that the ATI-SAR imaging mechanism is significantly affected by the degree of velocity bunching nonlinearity, especially for high values of R/V and H/2.

关键词： ATI-SAR nonlinear integral transform numerical simulation validation

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Machine learning models and over-fitting considerations

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World Journal of Gastroenterology 2022年第5期28卷 605-607页

作者： paris.Charilaou Robert Battat Jill Roberts Center for Inflammatory Bowel Disease-Division of Gastroenterology&Hepatology Weill Cornell MedicineNew YorkNY 10021United States

Machine learning models may outperform traditional statistical regression algorithms for predicting clinical *** validation of building such models and tuning their underlying algorithms is necessary to avoid over-fitting and poor generalizability,which smaller datasets can be more prone *** an effort to educate readers interested in artificial intelligence and model-building based on machine-learning algorithms,we outline important details on crossvalidation techniques that can enhance the performance and generalizability of such models.

关键词： Machine learning Over-fitting Cross-validation Hyper-parameter tuning

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微型轴承的润滑

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国外轴承 1990年第2期 57-62页

作者： paris.,J 姚玉琴

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Chitinozoans from the Fenxiang Formation (Early Ordovician) of Yichang,Hubei Province,China

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Acta Geologica Sinica(English Edition) 2008年第2期82卷 287-294页

作者： CHEN Xiaohong Florentin paris.ZHANG Miao Yichang Institute of Geology and Mineral Resources Hubei 443003 China Geosciences-Rennes UMR6-118 du CNRS Universite de Rennes I 35042 Rennes Cedex France

Chitinozoans collected from upper Tremadocian to lower Floian strata of Chenjiahe section, Yichang, western Hubei, China comprise six species belonging respectively to the genera Euconochitina including a new species, Euconochitina fenxiangensis, Lagenochitina and Bursachitina, together with Desmochitina sp. and Eremochitina sp. The chitinozoan succession across the interval is correlated with relevant conodont and chitinozoan biozones and two new regional chitinozoan biozones, the Lagenochitina destombesi Biozone and the Euconochitina symmetrica Biozone are proposed based on their stratigraphic ranges in the Fenxiang to Honghuayuan formations in the Chenjiahe section.

关键词： Early Ordovician Chitinozoa systematics biozonation western Hubei China

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Compositional Features of Fine Sediments Involved in the Montescaglioso Landslide(Southern Italy)

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Journal of Earth Science 2022年第6期33卷 1513-1525页

作者： Vito Summa Rosa Sinisi Eleonora paris.Agnese Emanuela Bonomo National Research Council Institute of Methodologies for Environmental AnalysisC/da S.Loja 85050Tito ScaloItaly School of Science and Technology Geology DivisionUniversity of Camerino62032CamerinoItaly

This paper presents the multidisciplinary study of the southern Italy Plio-Pleistocene sediments involved in the large Montescaglioso *** principal aim of the work is to assess the compositional characters(i.e.,grain-size,mineralogy,petrography and geochemistry)and some rheological features(Atterberg’s limits,plasticity index and activity)of these sediments to enrich our knowledge about the Montescaglioso fine sediments and correlation among the lithological properties *** types of sediments,from a deep geognostic borehole and from the surrounding landslide area,were collected and *** significant compositional differences have been found between the core and landslide area ***,some changes have been detected in sediments along the ***,the-15 to-20 m lithostratigraphic level hosts the highest percentages of phyllosilicates and clay fraction(CF),commonly considered as possible hazard factors for the landslide *** more,in the studied core sediments,the CF contents correlate with the Atterberg’s liquid and plastic limits and a CF value of about 38%was suggested as threshold value for the changing of index properties of *** factors,such as the weathering degree and clay mineral type,do not show significant correlations with the rheological properties of sediments here studied.

关键词： grain-size mineralogy geochemistry index properties Plio-Pleistocene sediments

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Stem cell treatment and cerebral palsy: Systemic review and meta-analysis

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World Journal of Stem Cells 2019年第10期11卷 891-903页

作者： Simone Eggenberger Céline Boucard andreina Schoeberlein Raphael Guzman Andreas Limacher Daniel Surbek Martin Mueller Department of Obstetrics and Gynaecology InselspitalUniversity Hospital BernBern 3010Switzerland Department for BioMedical Research University of BernBern 3008Switzerland Department of Neurosurgery University Hospital of BaselBasel 4056Switzerland CTU Bern University of BernBern 3012Switzerland

BACKGROUND Perinatal complications may result in life-long morbidities,among which cerebral palsy(CP)is the most severe motor *** developed,CP is a nonprogressive disease with a prevalence of 1-2 per 1000 live births in developed *** demands an extensive and multidisciplinary ***,it is a challenge for our health system and a burden for patients and their ***,stem cell therapy emerged as a promising treatment option and raised hope in patients and their *** The aim is to evaluate the efficacy and safety of stem cell treatment in children with CP using a systematic review and meta-analysis METHODS We performed a systematic literature search on PubMed and EMBASE to find randomized controlled clinical trials(RCT)investigating the effect of stem cell transplantation in children with *** the review,we performed a randomeffects meta-analysis focusing on the change in gross motor function,which was quantified using the gross motor function *** calculated the pooled standardized mean differences of the 6-and/or 12-mo-outcome by the method of *** quantified the heterogeneity using the I-squared *** We identified a total of 8 RCT for a qualitative *** the initially selected trials,5 met the criteria and were included in the ***’population ranged from 0.5 up to 35 years(n=282).We detected a significant improvement in the gross motor function with a pooled standard mean difference of 0.95(95%confidence interval:0.13-1.76)favoring the stem cell group and a high heterogeneity(I2=90.1%).Serious adverse events were rare and equally distributed among both intervention and control *** Stem cell therapy for CP compared with symptomatic standard care only,shows a significant positive effect on the gross motor function,although the magnitude of the improvement is ***-term safety is present and further highquality RCTs are needed.

关键词： Cerebral palsy Perinatal brain injury Stem cells Umbilical cord blood Mesenchymal stem/stromal cells Gross motor function Meta-analysis

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“BUTTERFLY” PRECIPITATES IN δ-TiN_(0.53)→δ’-TiN_(0.53) ORDERING TRANSFORMATION①

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中国有色金属学会会刊：英文版 1996年第2期6卷 57-60页

作者： Du Jun Yang Gaiying Portier R Shi Likai (General Research Institute for Non-Ferrous Metals, Beijing 100088 Ecole Nationale Superieure de Chimie de paris. 75231 paris. France) GEN RES INST NONFERROUS MET BEIJING 100088 PEOPLES R CHINA ECOLE NATL SUPER CHIM F-75231 PARIS FRANCE

“ＢＵＴＴＥＲＦＬＹ”ＰＲＥＣＩＰＩＴＡＴＥＳＩＮδ－ＴｉＮ_（０．５３）→δ’－ＴｉＮ_（０．５３）ＯＲＤＥＲＩＮＧＴＲＡＮＳＦＯＲＭＡＴＩＯＮＤｕＪｕｎ；ＹａｎｇＧａｉｙｉｎｇ；ＰｏｒｔｉｅｒＲ；ＳｈｉＬｉｋａｉ（... 详细信息

“ＢＵＴＴＥＲＦＬＹ”ＰＲＥＣＩＰＩＴＡＴＥＳＩＮδ－ＴｉＮ_（０．５３）→δ’－ＴｉＮ_（０．５３）ＯＲＤＥＲＩＮＧＴＲＡＮＳＦＯＲＭＡＴＩＯＮＤｕＪｕｎ；ＹａｎｇＧａｉｙｉｎｇ；ＰｏｒｔｉｅｒＲ；ＳｈｉＬｉｋａｉ（ＧｅｎｅｒａｌＲｅｓｅａｒｃｈＩｎ...

关键词： butterfly”precipitates δ’-TiN0.53 ordering transformation

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