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Applied Mathematics 2014年第16期5卷 2619-2629页

作者： Andreas de vries South Westphalia University of Applied Sciences Hagen Germany

The problem of profile matching in electronic social networks asks to find those offering profiles of actors in the network fitting best to a given search profile. In this article this problem is mathematically formulated as an optimization problem. For this purpose the underlying search space and the objective function are defined precisely. In particular, data structures of search and offering profiles are proposed, as well as a function measuring the matching of the attributes of a search profile with the corresponding attributes of an offering profile. This objective function, given in Equation (29), is composed of the partial matching degrees for numerical attributes, discrete non-numerical attributes, and fields of interests, respectively. For the matching degree of numerical profile attributes a fuzzy value approach is presented, see Equation (22), whereas for the matching degree of fields of interest a new measure function is introduced in Equation (26). The resulting algorithm is illustrated by a concrete example. It not only is applicable to electronic social networks but also could be adapted for resource discovery in grid computation or in matchmaking energy demand and supply in electrical power systems and smart grids, especially to efficiently integrate renewable energy resources.

关键词： Profile Matching Algorithm Matchmaking Algorithm Matching degree Electronic Social Network Matching Fields of Interest Grid Computing Renewable Energy Energy Transition

Transport receptor occupancy in nuclear pore complex mimics

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Nano Research 2022年第11期15卷 9689-9703页

作者： Alessio Fragasso Hendrik W.de vries John Andersson Eli Ovan der Sluis Erik van der Giessen Patrick R.Onck Cees dekker department of Bionanoscience Kavli Institute of NanoscienceDelft University of TechnologyVan der Maasweg 9Delft 2629 HZThe Netherlands Zernike Institute for Advanced Materials University of GroningenNijenborgh 4Groningen 9747AGThe Netherlands department of Chemistry and Chemical Engineering Chalmers University of TechnologyKemivägen 10Gothenburg SE-41296Sweden

Nuclear pore complexes(NPCs)regulate all molecular transport between the nucleus and the cytoplasm in eukaryotic *** disordered Phe-Gly nucleoporins(FG-Nups)line the central conduit of NPCs to impart a selective barrier where large proteins are excluded unless bound to a transport receptor(karyopherin;Kap).Here,we assess“Kap-centric”NPC models,which postulate that Kaps participate in establishing the selective *** combine biomimetic nanopores,formed by tethering Nsp1 to the inner wall of a solid-state nanopore,with coarse-grained modeling to show that yeast Kap95 exhibits two populations in Nsp1-coated pores:one population that is transported across the pore in milliseconds,and a second population that is stably assembled within the FG mesh of the *** current measurements show a conductance decrease for increasing Kap concentrations and noise data indicate an increase in rigidity of the *** reveals an accumulation of Kap95 near the pore wall,yielding a conductance *** find that Kaps only mildly affect the conformation of the Nsp1 mesh and that,even at high concentrations,Kaps only bind at most 8%of the FG-motifs in the nanopore,indicating that Kap95 occupancy is limited by steric constraints rather than by depletion of available *** data provide an alternative explanation of the origin of bimodal NPC binding of Kaps,where a stable population of Kaps binds avidly to the NPC periphery,while fast transport proceeds via a central FG-rich channel through lower affinity interactions between Kaps and the cohesive domains of Nsp1.

关键词： nuclear pore complex intrinsically disordered proteins nuclear transport receptors karyopherins nanopores biomimetics molecular dynamics coarse-grained modeling

A glacial control on the eruption rate of Mt Erebus, Antarctica

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Advances in Polar Science 2018年第3期29卷 165-180页

作者： Maximillian VAN WYK de vries department of Earth Sciences University of Minnesota Twin Cities campus Minneapolis 55455 MN United States

Mt Erebus is the most active Antarctic volcano, on the flanks of the world＇s largest ice sheet. despite this, the interactions between its eruptions and the ice cover have not been studied in detail. Focusing on the most recent deglaciation, we build a glacial retreat model and compare this to recent lava geochemistry measurements to investigate the processes involved. This analysis exposes a previously unknown link between Antarctic glaciation and eruptions, of vital importance to the understanding of volcanism in this context. We find that deglaciation led to rapid emptying of the shallow- magma plumbing system and a resulting peak in eruption rates synchronous with ice retreat. We also find that the present day lavas do not represent steady state conditions, but originate from a source with up to 30% more partial melting than older 〉4 ka eruptions. This finding that deglaciation affects volcanism both on short and longer timescales may prompt a re-evaluation of eruptions in glaciated and previously glaciated terrains both in Antarctica and beyond.

关键词： glaciovolcanism Mt Erebus Antarctica Earth Systems

An Investigation of the Secular Acceleration of Psychiatric Disorders

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Open Journal of Psychiatry 2015年第1期5卷 121-127页

作者： Sebastian Lemke Sunka de vries Psychiatry and Psychotherapy Clinic of Jena University Hospital Germany Ubbo Emmius Clinic East Friesia Hospital Germany

Secular acceleration, for example an increase in height in groups of people over a period of time of more than a century, is a unique, perhaps “ecological” event. In the study presented here, historical patient files from the Jena Psychiatric Clinic were evaluated in relation to the problem of acceleration. A first sampling of 119 patient files for the years 1880-1890 revealed that, for children and adolescents up until the end of their twentieth year of life, the average age at the time of their first admission was 17 years. Compared to this, the first admission of a second sample of 132 patient records for the years 1985-1987 revealed a clearly younger average age at first admission of 11 years. This difference in age was found to be statistically significant. The heights of 14-year-old subjects from the city of Jena for the years 1880 to 1975 obtained from the literature showed a documented increase in height of almost 20 cm. The results of our investigation revealed that, in addition to physical acceleration, there was also an advancement of pathological mental processes in the course of a period of 100 years.

关键词： Acceleration Secular

Seaweeds as Biomonitoring System for Heavy Metal (HM) Accumulation and Contamination of Our Oceans

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American Journal of Plant Sciences 2018年第7期9卷 1514-1530页

作者： Vincent van Ginneken Evert de vries Bluegreen Technologies Heelsum The Netherlands

This research manuscript reports the heavy metal accumulation in four marine seaweeds sp. 1)?Caulerpa sertlatioides (Cuba);2) Caulerpa cf. brachypus;(Bali, Indonesia);3) Undaria pinnatifida (West-Donegal, Ireland);4) Ulva lactuca (Easters-Scheldt, the Netherlands). Mechanical pressure at 10 bar of fresh seaweed fronds casu quo biomass in the laboratory delivered seaweed moisture which was analyzed by Inductively Coupled Plasma Spectroscopy (ICP)-techniques for heavy-metals = [HM], (Al, As, Cd, Co, Cr, Cu, Fe, Mo, Ni, Pb & Zn). Three important observations were made: 1) The [HM] in the seaweed moisture is higher than in the surrounding seawater which directs to mechanism(s) of bio-accumulation;2) The accumulation factor [AF] is varying per metallic-cation with an overall trend for our four seaweeds and sampling locations for [HM] are: As & Co & Cu: 5000 - 10,000 μg/l;Ni & Zn: 3000 - 5000 μg/l;Cd: 2000 - 3000 μg/l;Cr: 1000 - 2000 μg/l;Al: 200 - 1000 μg/l;Mo & Pb & Fe: 0 - 200 μg/l range. 3) Seaweed moisture detected that [HM]: Pb & Zn & Fe—which all three could not be detected in the seawater—supports the view that seaweeds have a preference in their bio-accumulation mechanism for these three HM. Major conclusion is in general that “overall” for the macro-elements Ca, Fe, K, Mg, Mn, Na, P & S in the moisture of the four seaweed species the concentration is lower in the seaweed species, or equals the concentration, in comparison to the surrounding sea water. For the HM (Al, As, Cd, Co, Cr, Cu, Mo, Ni, Pb & Zn) the opposite is the case species and is the concentration “overall” higher in the seaweed species in comparison to the surrounding sea water. Further topics addressed include strategies of irrigation of the Sahara desert with the moisture out of seaweeds under conditions of low anthropogenic influences.

关键词： Seaweeds Heavy Metal Accumulation Ulva lactuca Caulerpa sertlatioides Caulerpa cf. brachypus & Undaria pinnatifida Inductively Coupled Plasma Spectroscopy (ICP)-Techniques Al As Cd Co Cr Cu Fe Mo Ni Pb & Zn Bio-Accumulation Biomonitoring Upper Tolerance Nutrient Intake Levels (ULs) Irrigation Water

Novel Phialophora species from leaf-cutting ants (tribe Attini)

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Fungal Diversity 2014年第2期65卷 65-75页

作者： D.Attili-Angelis A.P.M.Duarte F.C.Pagnocca N.S.Nagamoto M.de vries J.B.Stielow G.S.de Hoog Center for the Study of Social Insects UNESP-São Paulo State UniversitySão PauloSPBrazil Division of Microbial Resources CPQBAUniversity of CampinasCampinasSPBrazil department of Plant Protection UNESP-São Paulo State UniversityBotucatuSPBrazil Centraalbureau voor Schimmelcultures KNAW Fungal Biodiversity Centre UtrechtThe Netherlands Institute for Biodiversity and Ecosystem Dynamics University of AmsterdamAmsterdamThe Netherlands Sun Yat-sen Memorial Hospital Sun Yat-sen UniversityGuangzhouChina Research Center for Medical Mycology Peking University Health Science CenterBeijingChina Shanghai Institute of Medical Mycology Changzheng HospitalSecond Military Medical UniversityShanghaiChina Basic Pathology department Federal University of ParanáStateCuritibaParanáBrazil King Abdulaziz University JeddahSaudi Arabia

Ants in the tribe Attini(Hymenoptera,Formicidae)maintain a 50 million-year-old lifestyle of co-evolution with symbiotic basidiomycetous fungi which they cultivate as essential source of ***,other microorganisms have been reported from ant habitats indicating a higher diversity of consistently associated species than established to ***,black yeast-like fungi have been reported as a possible symbiont,like a competitor of the actinomycete bacteria that grow in the integument of the *** the mating season,gynes of Atta capiguara and *** were collected from nests located in Botucatu,SP,Brazil and sampled using flotation *** analysis based on ITS,partial 28S(LSU)andβ-tubulin sequences revealed the occurrence of two novel species of Phialophora among the melanized fungi isolated.

关键词： Black yeasts Chaetothyriales Gynes Phialophora Cyphellophora Atta Ant cuticle Neotropical fungal ecology

面向标准竞争优势的动态知识管理能力:形成机理与提升路径

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情报杂志 2019年第12期38卷 200-208页

作者：吴玉浩姜红 Henk de vries 吉林大学管理学院长春130022 伊拉斯姆斯大学鹿特丹管理学院鹿特丹3062 PA

[目的/意义]标准竞争优势的形成实质上是动态能力发挥作用的结果。从过程和内容视角构建基于资源和能力的整合框架,不仅是应对环境不确定性和复杂性的必然选择,也是改善组织绩效的现实要求。[方法/过程]在明晰关键知识构成要素的基础之... 详细信息

[目的/意义]标准竞争优势的形成实质上是动态能力发挥作用的结果。从过程和内容视角构建基于资源和能力的整合框架,不仅是应对环境不确定性和复杂性的必然选择,也是改善组织绩效的现实要求。[方法/过程]在明晰关键知识构成要素的基础之上,阐述了动态知识管理能力的特征和影响因素。由“知识传导—动态能力—企业成长”的逻辑关系入手,从流程、位置和路径三个层面构建了动态知识管理能力的整合分析框架,揭示了动态知识管理能力的形成机理,并进一步归纳了其提升路径。[结果/结论]研究发现,标准知识宽度、标准知识深度与知识整合机制有效解释了动态知识管理能力的提升机理,动态知识管理能力的提升路径主要包括基础层、转化层和应用层,以此为企业获取技术标准竞争优势提供了理论依据。

关键词：知识管理动态能力技术标准动态知识管理能力标准竞争优势形成机理提升路径

Use of Cigarettes and Other Tobacco Products among Primary and Secondary School Students in Khartoum State, Sudan

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Occupational Diseases and Environmental Medicine 2020年第4期8卷 203-215页

作者： Dafaallah Balah Mohamed Ciska Hoving Hein de vries department of Health Promotion School of Public Health and Primary Care (CAPHRI) Maastricht University Maastricht The Netherlands

Introduction: In Sudan, tobacco use is common;it is used in some form by 20% of the population. As most users start during adolescence, we aimed to determine the prevalence of ever use of tobacco products (i.e. cigarettes, herbal cigarettes, shisha and tombak) among Sudanese adolescent males and females, and to assess associations between tobacco ever use and personal characteristics. Methods: This cross-sectional study was conducted in Khartoum State, Sudan. The study data were collected in June 2014. The target population consisted of adolescents in 8th grade of primary education or 1st and 2nd grade of secondary education. They were asked to fill in a written questionnaire during the school break. Schools were randomly selected using a stratified two-stage cluster sampling design method. Results: A total of 1229 respondents (56.4% male), with a mean age of 14.5 years, were included in the analysis. Prevalence of cigarettes, herbal cigarettes, shisha and tombak ever use were 13%, 7.8% 5.9% and 3.5%, respectively. Older respondents were significantly more likely to have ever smoked cigarettes. Males were found to be significantly more likely to have ever used any tobacco products. Urban adolescents were significantly more likely to have ever used shisha. Respondents were in the bottom third percentiles with regard to academic achievements, had an almost three-fold increased risk of having ever smoked a cigarette and were at least five-fold more likely to have ever smoked herbal cigarettes. Moreover, respondents in the middle third percentiles were more than twice as likely to have ever smoked herbal cigarettes. Conclusion: As uptake of tobacco products increased significantly with age among males with a middle and lower school performance living in urban areas, timely prevention targeting adolescents, such as school-based tobacco control programmes, are recommended. Our findings show that

关键词： Cigarettes Tobacco School Students

Modelling impacts of acid deposition and groundwater level on habitat quality and plant species diversity

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Ecological Processes 2016年第1期5卷 273-291页

作者： J.Kros J.P.Mol-Dijkstra G.W.W.Wamelink G.J.Reinds Avan Hinsberg W.de vries Wageningen Environmental Research Wageningen University and ResearchP.O.Box 476700 AA WageningenThe Netherlands Netherlands Environmental Assessment Agency PO Box 3033720 BABilthovenWageningenThe Netherlands Environmental Systems Analysis Group Wageningen University and ResearchP.O.Box 476700 AA WageningenThe Netherlands

Introduction:We quantified the effects of the site factors pH and nitrate(NO_(3))concentration in soil solution and groundwater level on the vegetation of terrestrial ecosystems for the Netherlands in response to changes in atmospheric nitrogen(N)and sulphur(S)deposition and groundwater level over the period *** assessment was made with the SMART2 model,a simple one-layer model including geochemical buffer processes,element cycling by litterfall,mineralisation and uptake,nitrogen transformation processes and element input through deposition,weathering and upward ***:To assess the effects of changes in abiotic site factors on the vegetation,we developed a simple plant diversity indicator for grassland,heathland and forest,based on the occurrence of target plant species and competing *** occurrence was calculated from the preferred ranges of each species for the NO_(3) concentration and pH in soil solution and mean spring groundwater *** in the plant diversity indicator were assessed from effects of changes in the occurrence of target and competing plant species in response to changes in mean spring groundwater level and in pH and NO_(3) concentration,as calculated with *** were made for combinations of five vegetation structure types(three forest types,semi-natural grassland and heathland)and seven soil types(three sandy soils,two clay soils,peat and loess soils)using a 250×250 m *** used data for atmospheric deposition and groundwater level in the past to assess trends between 1990 and 2010 and evaluated two future scenarios for the period 2010-2030:a Business as Usual and an Improved Environment ***:Comparison of model predictions on pH and NO_(3) with measured soil solution concentrations for forest showed a reasonable to good agreement for pH but rather poor for NO_(3).The largest impacts were found for the combination of the two Improved Environment ***:Reductions in N

关键词： Nutrient cycling Soil modelling Biodiversity Acidification Scenario analysis

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中国环境污染及改善研究——以服装产业为例

中国环境污染及改善研究——以服装产业为例

作者： Wilianne de vries 上海外国语大学

学位级别：硕士

中国是世界上最大的服装出口国,服装业也是中国最大的工业部门之一,该产业对中国环境的污染也一直比较严重。服装产业的供应链中许多环节对环境造成不同程度的污染,生产织物需要的化学品造成河流和土壤污染,服装在染色、洗涤过程中产生... 详细信息

中国是世界上最大的服装出口国,服装业也是中国最大的工业部门之一,该产业对中国环境的污染也一直比较严重。服装产业的供应链中许多环节对环境造成不同程度的污染,生产织物需要的化学品造成河流和土壤污染,服装在染色、洗涤过程中产生的大量的污水严重污染环境。此外,生产设备多使用煤造成二氧化碳排放也会造成空气污染。为治理环境,中国政府推出一系列治理措施,制定了更为严格的环境保护法律。目前,服装产业仍然是中国的重污染行业,环境治理仍未取得最佳效果。中国和国际非政府组织开展培训项目,引导和帮助中国服装生产商降低对环境的污染影响。为了找到服装产业污染治理的解决方案,本文研究并借鉴了印度和荷兰政府治理环境污染所采取的措施,这些创新措施包括治理污染河流、使用清洁与可回收原材料生产等措施。此外,本文讨论了其他国家普遍使用的治理服装产业污染的措施,比如使用可再生材料,使用清洁染色方法和使用易降解的染料,使用空气过滤绿墙在工厂周围创造一个更清洁的环境等,为中国政府治理服装产业引起的环境污染提供可以借鉴的思路。

关键词：中国环境保护环境法污染服装产业