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Simplified seismic performance assessment and implications for seismic design

Earthquake Engineering and Engineering Vibration 2014年第S1期13卷 95-122页

作者： Timothy J.Sullivan david p.welch Gian Michele Calvi University of pavia Department of Civil Engineering & ArchitecturePavia 27100Italy European Centre for Training and Research in Earthquake Engineering Pavia 27100Italy UME School ROSE ProgrammeIUSS Pavia phD candidate IUSS pavia professor

The last decade or so has seen the development of refined performance-based earthquake engineering(pBEE) approaches that now provide a framework for estimation of a range of important decision variables,such as repair costs,repair time and number of casualties. This paper reviews current tools for pBEE,including the pACT software,and examines the possibility of extending the innovative displacement-based assessment approach as a simplified structural analysis option for performance assessment. Details of the displacement-based s+eismic assessment method are reviewed and a simple means of quickly assessing multiple hazard levels is proposed. Furthermore,proposals for a simple definition of collapse fragility and relations between equivalent single-degree-of-freedom characteristics and multi-degree-of-freedom story drift and floor acceleration demands are discussed,highlighting needs for future research. To illustrate the potential of the methodology,performance measures obtained from the simplified method are compared with those computed using the results of incremental dynamic analyses within the pEER performance-based earthquake engineering framework,applied to a benchmark building. The comparison illustrates that the simplified method could be a very effective conceptual seismic design tool. The advantages and disadvantages of the simplified approach are discussed and potential implications of advanced seismic performance assessments for conceptual seismic design are highlighted through examination of different case study scenarios including different structural configurations.

关键词： performance-based earthquake engineering displacement-based assessment seismic assessment

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particulate matter emissions and gaseous air toxic pollutants from commercial meat cooking operations

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Journal of Environmental Sciences 2018年第3期30卷 162-170页

作者： Nicholas Gysel William A.welch Chia-Li Chen poornima Dixit david R.Cocker Ⅲ Georgios Karavalakis Department of Chemical and Environmental Engineering University of CaliforniaRiverside Center for Environmental Research and Technology University of CaliforniaRiverside

This study assessed the effectiveness of three novel control technologies for particulate matter（pM） and volatile organic compound（VOC） removal from commercial meat cooking operations. All experiments were conducted using standardized procedures at University of California, Riverside＇s commercial test cooking facility. pM mass emissions collected using South Coast Air Quality Management District（SCAQMD） Method 5.1, as well as a dilution tunnel-based pM method showed statistically significantly reductions for each control technology when compared to baseline testing（i.e., without a catalyst）. Overall, particle number emissions decreased with the use of control technologies, with the exception of control technology 2（CT2）, which is a grease removal technology based on boundary layer momentum transfer（BLMT） theory. particle size distributions were unimodal with CT2 resulting in higher particle number populations at lower particle diameters. Organic carbon was the dominant pM component（ 99%） for all experiments. Formaldehyde and acetaldehyde were the most abundant carbonyl compounds and showed reductions with the application of the control technologies. Some reductions in mono-aromatic VOCs were also observed with CT2 and the electrostatic precipitator（ESp） CT3 compared to the baseline testing.

关键词： Charbroiled meat cooking particulate emissions particle number Carbonyl compounds VOCs

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preliminary age-based life history characteristics of the dogtooth tuna,Gymnosarda unicolor(Ruppell,1838),in the southwest pacific Ocean

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Aquaculture and Fisheries 2023年第3期8卷 323-331页

作者： david J.welch Adam K.Smith Kyne Krusic-Golub Sandra Erdmann Stephen J.Newman C_(2)O Fisheries PO Box 3041CairnsQueensland4870Australia Centre for Sustainable Tropical Fisheries and Aquaculture College of Science and EngineeringJames Cook UniversityTownsville4811Australia Reef Ecologic TownsvilleQueensland4811Australia Fish Ageing Services pty.Ltd. QueenscliffVictoria3225Australia Western Australian Fisheries and Marine Research Laboratories Department of Primary Industries and Regional DevelopmentGovernment of Western AustraliaNorth BeachWestern Australia6020Australia

Dogtooth tuna,Gymnosarda unicolor were sampled off the east coast of Australia(southwest pacific Ocean)from 2007 to *** were determined by examining thin transverse sections of their sagittal otoliths and were based on counts of alternating opaque and translucent zones(annual growth increments).Growth was rapid during the first year of life,after which growth in length was much *** of the constrained von Bertalanffy growth function(fork length-at-age)were L∞=1164.77(mm,FL)and K=0.44 year^(-1).preliminary estimates of longevity indicate a maximum observed age of at least 20 *** was a high degree of variation in the observed length and age of sexual maturity for *** this variation,the size at 50%maturity for female *** estimated in this study was 713 mm FL(pecies may be somewhat resilient to ***,reports of localised depletions,in association with heavy targeting by sports fishers,low effective population sizes and patchy recruitment indicate that this species is particularly vulnerable to overfishing.

关键词： Otoliths Age Life history pacific ocean Diet Fisheries management

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GM:Who’s in Charge Here

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国际经济合作 2009年第4期 1-1页

作者： david welch

Who is running General Motors?Is it Frederick ***,the GM veteran that the Obama Administration chose to replace Richard Wagoner Jr.?Or is it Team Obama?This is a question worth ***。

关键词： Frederick A. Henderson 美国经济管理奥巴马政府

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Annoyance and Health-Related Quality of Life: A Cross-Sectional Study Involving Two Noise Sources

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Journal of Environmental protection 2014年第5期5卷 400-407页

作者： Daniel Shepherd david McBride Kim N. Dirks david welch Department of preventive and Social Medicine University of Otago Dunedin New Zealand School of population Health The University of Auckland Auckland New Zealand School of public Health AUT University Auckland New Zealand

Noise remains a potent degrader of health in many global contexts, capable of inducing severe annoyance and sleep disturbance. An epidemiological study was undertaken to compare noise annoyance and health-related quality of life of individuals residing close to a major international airport or wind turbine complex with those located in demographically matched areas. Results indicate that domains of health-related quality of life may be degraded in those living in areas more likely to induce noise annoyance. Furthermore, the addition of aviation noise to environments already encroached by road noise may induce further annoyance and degradations in health-related quality of life, indicating that one noise sources may not mask the impact of another.

关键词： Aviation Noise Wind Turbine Noise Noise Annoyance Health

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Resolution of Crohn's disease and complex regional pain syndrome following treatment of paratuberculosis

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World Journal of Gastroenterology 2015年第13期21卷 4048-4062页

作者： J Todd Kuenstner William Chamberlin Saleh A Naser Michael T Collins Coad Thomas Dow John M Aitken Stuart Weg Grzegorz Telega Kuruvilla John david Haas Torsten M Eckstein Maher Kali Christine welch Thomas petrie Department of pathology Charleston Area Medical CenterCharlestonWV 25304United States Department of Gastroenterology Mountain View Regional HospitalLas CrucesNM 88011United States Burnett School of Biomedical Sciences UCF College of MedicineOrlandoFL 32816United States Department of pathobiological Sciences the University of Wisconsin School of Veterinary MedicineMadisonWI 53706United States 5 Damon Street Eau ClaireWI 54701United States Otakaro pathways Ltd. 63 Bibiana StreetChristchurch 8011New Zealand patients Medical Alternative Pain Management800 Second Avenue Suite 900New York CityNY 10017United States Children’s Hospital of Wisconsin 8915 W.Connell Ave.MilwaukeeWI 53226United States Department of Neurosciences Charleston Area Medical CenterCharlestonWV 25304United States Department of Chemistry University of CharlestonCharlestonWV 25304United States Department of Microbiology Colorado State UniversityImmunology and PathologyCO 80523United States CAMC Clinical Trials Center 3100 Mac Corkle Avenue S.E.Suite 806CharlestonWV 25304United States CAMC Clinical Trials Center CharlestonWV 25304United States AVIcure Bioscience LLC Superior Quartz ProductsBethlehemPA 18020United States

A cohort of family members with various chronic diseases including Crohn's disease, asthma, complex regional pain syndrome, hypothyroidism, type 1 diabetes mellitus, and lymphangiomatosis and/or evidence of infection by Mycobacterium avium subsp. paratuberculosis(MAp) are described in this series of case reports. MAp was cultured from the blood of three members affected by the first five diseases and there was accompanying elevated anti-MAp Ig G in two members. The patient affected by the sixth disease has a markedly elevated anti-MAp titer. The two patients affected by the first four diseases have been treated with a combination of anti-MAp antibiotics and ultraviolet blood irradiation therapy with resolution of the disease symptomatology and inability to culture MAp in post treatment blood samples. These case reports of patients with MAp infections provide supportive evidence of a pathogenic role of MAp in humans.

关键词： Crohn’s disease Complex regional pain syndrome Lym

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花生先生砸成酱

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商业周刊（中文版） 2012年第6期 22-23页

作者： david welch

卡夫食品旋下的绅士品牌终于开始进军花生酱市场该产品的营销针对成年消费者，“你不会看到花生酱果冻三明治”

关键词：花生酱消费者食品果冻

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在电动汽车之争中通用汽车开上慢车道

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商业周刊（中文版） 2022年第18期 34-36页

作者： david welch 永年(译) 不详

五年前,通用汽车(General Motors)的老板玛丽·芭拉(Mary Barra)曾经是个大胆的人。她宣布了一项计划,斥资200亿美元,以该公司现在称为Ultium的新电池组为基础,开发一系列电动汽车车型一一她承诺,在2023年之前推出20款车型。

关键词：电动汽车通用汽车慢车道电池组车型

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新能源车也是大选赢家

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商业周刊（中文版） 2020年第21期 10-11页

作者： david welch 许诺(译) 不详

上一轮金融危机爆发后,虽然奥巴马向美国汽车制造商们伸出了援手,但他们当中仍有很多人不满意,因为奥巴马政府还颁布了将汽车制造商推向极限的燃油效率相关规定。当年,是副总统拜登(Joe Biden)与奥巴马联手制定了这套严格的监管规定。

关键词：监管规定金融危机燃油效率汽车制造商奥巴马政府新能源车赢家

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通用汽车开上电气化的单行道

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商业周刊（中文版） 2021年第1期 13-14页

作者： david welch 程玺(译) 不详

一辆电池驱动的悍马(Hummer)皮卡车。从听到这个想法的那刻起,通用汽车公司(General Motors Co.)CEO玛丽·巴拉(Mary Barra)就爱上了它。通用总裁马克·罗伊斯(Mark Reuss)的团队曾辩称,推出这个通用头号坏小子的“绿色”版本,最能让心... 详细信息

一辆电池驱动的悍马(Hummer)皮卡车。从听到这个想法的那刻起,通用汽车公司(General Motors Co.)CEO玛丽·巴拉(Mary Barra)就爱上了它。通用总裁马克·罗伊斯(Mark Reuss)的团队曾辩称,推出这个通用头号坏小子的“绿色”版本,最能让心怀疑虑的买家打消疑虑:这家公司即将推出的一系列电动汽车绝不只是实验性的科学计划。

关键词：通用汽车公司电池驱动单行道皮卡车电动汽车电气化

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