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Adaptation of Industrial Organisations to the Environment Grounded in Evolutionary Models

厦门大学学报（自然科学版） 2002年第S1期41卷 248-页

作者： Rob dekkers eveline van de boogaard Naima el-Bouzidi Hil de Skraastad Section Production Technology and Organisation Delft University of TechnologySection Production Technology and Organisation Delft University of TechnologySection Production Technology and Organisation Delft University of TechnologySection Production Technology and Organisation Delft University of Technology The NetherlandsThe NetherlandsThe NetherlandsThe Netherlands

Yes, we perceive that the environment in which comp an ies operate, is changing at higher speeds then before. Globalisation, higher inn ovation rates, customisation, more intense competition, technological developmen ts account for these changes effecting the way industrial companies operate and eventually their structures and processes. Companies have to adapt themselves to these changes. The question arose whether the approach of the Section Industria l Organisation and Management that it has practised for redesign of processes an d organisational structures also withholds in this era of continuous change. Sec ondly, firms are also looking for contingencies in processes and structures to i mprove their chances for survival. These two questions into the processes and st ructures within the firm that it needs to support adaptation to the ever-changi ng environment direct this research. Industrial companies will have to increase to their Complexity Handling Capabili ty, the ability to cope with changes in its environment and imposed complexity p ouring in from the environment. To do so, they might decrease their internal com plexity through redefining their organisations and product structure. The effect of these measurements seems limited; more might be won by learning to increase its base of capabilities. The increase of capabilities holds parallels to the de velopment of species in biology and paleontology for which two models exist: the punctuated equilibrium and the phyletic gradualism. The punctuated equilibr ium supposes that periods of turmoil are interchanged by periods of fermentation giving rise to new variants and products (for companies). The phyletic graduali sm relies on the development of characteristics in species that are initially ha rd to detect but will lead at the end to new species. Whatever might be true for biology and palaeontology, these two models appear as a possibility for cla ssifying the theories of organisational change. Also, these t

关键词： Adaptation companies turmoil operate themselves holds Complexity giving competition technological

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Multiscale friction model for hot sheet metal forming

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Friction 2022年第2期10卷 316-334页

作者： Jenny VENEMA Javad HAZRATI Eisso ATZEMA David MATTHEWS Ton van den boogaard Tata Steel Research&DevelopmentCA Ijmuiden 1970the Netherlands Nonlinear Solid Mechanics Faculty of Engineering TechnologyUniversity of TwenteEnschede 7522 NBthe Netherlands Laboratory for Surface Technology and Tribology Faculty of Engineering TechnologyUniversity of TwenteEnschede 7522 NBthe Netherlands

The accurate description of friction is critical in the finite element(FE)simulation of the sheet metal forming ***,friction is oversimplified through the use of a constant Coulomb friction *** this study,the application of an existing multiscale friction model is extended to the hot stamping *** model accounts for the effects of tool and sheet metal surface topography as well as the evolution of contact pressure,temperature,and bulk strain during hot *** load flattening and strip drawing experiments are performed to calibrate the *** results show that the model can relatively well predict friction in strip draw experiments when the tool surface evolution due to wear is ***,the application of the formulated multiscale friction model was demonstrated in the FE simulation of a hot-stamped part.

关键词： tribology wear friction hot stamping friction model

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Evolution of real area of contact due to combined normal load and sub-surface straining in sheet metal

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Friction 2021年第4期9卷 840-855页

作者： Meghshyam SHISOde Javad HAZRAT Tanmaya MISHRA Matthijn de ROOIJ Ton van deN BOOGAAED Nonlinear Solid Mechanics Faculty of Engineering TechnologyUniversity of TwenteEnschede 7522 NBThe Netherlands Surface Technology and Tribology Faculty of Engineering TechnologyUniversity of TwenteEnschede 7522 NBThe Netherlands

Understanding asperity flattening is vital for a reliable macro-scale modeling of friction and *** sheet metal forming processes,sheet surface asperities are deformed due to contact forces between the tools and the *** addition,as the sheet metal is strained while retaining the normal load,the asperity deformation increases *** of the asperities determines the real area of contact which influences the friction and wear at the tool-sheet metal *** real area of contact between two contacting rough surfaces depends on type of loading,material behavior,and topography of the contacting *** this study,an experimental setup is developed to investigate the effect of a combined normal load and sub-surface strain on real area of *** and zinc coated steel sheets(GI)with different coating thicknesses,surface topographies,and substrate materials are used in the experimental *** element(FE)analyses are performed on measured surface profiles to further analyze the behavior observed in the experiments and to understand the effect of surface topography,and coating thickness on the evolution of the real area of ***,an analytical model is presented to determine the real area contact under combined normal load and sub-surface *** results show that accounting for combined normal load and sub-surface straining effects is necessary for accurate predictions of the real area of contact.

关键词： asperity flattening real area of contact sub-surface strain zinc coating sheet metal forming

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难加工材料的铣削和钻削加工

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航空制造技术 2013年第14期56卷 61-63页

作者： Teun van Asten Wilco van den boogaard Pr Nordberg 山高刀具公司

当前，减轻飞机重量这一目标正在促使航空航天工业采用越来越多的特种材料，如复合材料、钛合金和铬镍铁合金。相比普通材料，此类材料重量更轻、强度更高，但在加工方面，特别是铣削和钻削方面，它们各自拥有不同的加工难题。

关键词：难加工材料钻削加工铣削航空航天工业飞机重量特种材料复合材料镍铁合金

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难加工材料的铣削和钻削加工

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工具技术 2014年第6期48卷 I0002-I0004页

作者： Teun van Asten Wilco van den boogaard Pr Nordberg Seco公司

为减轻飞机重量．航空航天工业越来越多地采用特种材料，例如复合材料、钛合金和铬镍铁合金。相比普通材料，这类材料重量更轻，强度更高。但在加工方面，特别是铣削和钻削时产生了不同的加工难题。在铣削和钻削加工中，航空航天制造商... 详细信息

为减轻飞机重量．航空航天工业越来越多地采用特种材料，例如复合材料、钛合金和铬镍铁合金。相比普通材料，这类材料重量更轻，强度更高。但在加工方面，特别是铣削和钻削时产生了不同的加工难题。在铣削和钻削加工中，航空航天制造商通常使用整体硬质合金刀具和（或）整体高速钢刀具，

关键词：难加工材料钻削加工铣削航空航天工业硬质合金刀具飞机重量高速钢刀具特种材料

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Epidemiology of tuberculosis in Sabah, Malaysia, 2012–2018

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Infectious Diseases of Poverty 2020年第4期9卷 165-165页

作者： Michelle May D.Goroh Giri Shan Rajahram Richard Avoi Christel H.A.van den boogaard Timothy William Anna P.Ralph Christopher Lowbridge TB/Leprosy Control Unit Sabah State Health DepartmentKota KinabaluMalaysia Faculty of Medicine and Health Sciences Universiti Malaysia SabahKota KinabaluMalaysia Queen Elizabeth Hospital Kota KinabaluMalaysia Menzies School of Health Research Charles Darwin UniversityDarwinAustralia Infectious Diseases Society of Kota Kinabalu Kota KinabaluMalaysia Gleneagles Hospital Kota KinabaluMalaysia Division of Medicine Royal Darwin HospitalDarwinAustralia

Background Tuberculosis(TB)is of high public health importance in *** State,located on the island of Borneo,has previously reported a particularly high burden of disease and faces unique contextual challenges compared with peninsular *** aim of this study is to describe the epidemiology of TB in Sabah to identify risk groups and hotspots of TB *** We conducted a retrospective review of TB cases notified in Sabah,Malaysia,between 2012 and *** data from the state’s‘myTB’notification database,we calculated the case notification rate and described trends in the epidemiology,diagnostic practices and treatment outcomes of TB in Sabah within this *** Chi-squared test was used for determining the difference between two *** Between 2012 and 2018 there were 33193 cases of TB reported in Sabah(128 cases per 100000 population).We identified several geographic hotspots,including districts with>200 cases per 100000 population per *** rates increased with age and were highest in older ***vanced disease on chest X-ray and sputum smear positivity was high(58 and 81%of cases respectively),suggesting frequent late ***-drug resistant(MDR)TB prevalence was low(0.3%of TB cases),however,rapid diagnostic test coverage was low(1.2%)and only 18%of all cases had a positive culture *** success was 83%(range:81–85%)in those with drug-sensitive TB and 36%(range:25–45%)in cases of *** Between 2012 and 2018,TB notifications in Sabah State equated to 20%of Malaysia’s total TB notifications,despite Sabah representing only 10%of Malaysia’s *** found hotspots of TB in urbanised population hubs and points of migration,as well as evidence of late presentation and *** universal health coverage and expansion of GeneXpert®coverage is recommended to reduce barriers to care and early diagnosis and treatment fo

关键词： Tuberculosis Epidemiology Surveillance Sabah Malaysia

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四维定量血流MRI自动化心脏瓣膜跟踪技术

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国际医学放射学杂志 2019年第2期42卷 228-228页

作者： V.P.Kamphuis A.W.Roest N.A.Marsan P.J.van den boogaard L.J.M.Kroft J.P.Aben 刘雯雯(译) 梁红琴(校) department of Pediatrics Division of Pediatric CardiologyLeiden University Medical Center 不详

目的以后天获得性或先天性心脏病病人和健康志愿者为研究对象,对比分析四维血流MRI自动化心脏瓣膜跟踪技术与手动瓣膜跟踪技术。材料与方法在本回顾性研究中收集了114例病人和46名志愿者的数据,这些病人在2006—2017年期间接受了1.5 T或... 详细信息

目的以后天获得性或先天性心脏病病人和健康志愿者为研究对象,对比分析四维血流MRI自动化心脏瓣膜跟踪技术与手动瓣膜跟踪技术。材料与方法在本回顾性研究中收集了114例病人和46名志愿者的数据,这些病人在2006—2017年期间接受了1.5 T或3.0 T四维血流MRI。在114例病人中,女51例(45%),男63例(55%),其中33例患有后天获得性心脏病,81例患有先天性心脏病[中位年龄17岁,四分位距(IQR)13~49岁]。

关键词：跟踪技术 MRI 心脏瓣膜

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