1,136 results on '"Vonk, J."'
Search Results
302. Smoking cessation and bronchial epithelial remodelling in COPD
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Lapperre, Therese, Sont, Jacob K., van Schadewijk, Annemarie, Gosman, Margot M. E., Postma, Dirkje S., Bajema, Ingeborg M., Timens, Wim, Mauad, Thais, Hiemstra, Pieter S., Kauffman, H. F., de Reus, D., Boezen, H. M., Jansen, D. F., Vonk, J., Barentsen, M. D. W., Timens, W., Zeinstra-Smit, M., Luteijn, A. J., van der Molen, T., ter Veen, G., Gosman, M. M. E., ten Hacken, N. H. T., Kerstjens, H. A. M., van Maaren, M. S., Postma, D. S., Veltman, C. A., Verbokkem, A., Verhage, I., Vink-Kloosters, H. K., Snoeck-Stroband, J. B., Thiadens, H., Sont, J. K., Bajema, I., Gast-Strookman, J., Hiemstra, P. S., Janssen, K., Lapperre, T. S., Rabe, K. F., van Schadewijk, A., Schrumpf, J. A., Smit-Bakker, J., Stolk, J., Tire, A. C. J. A., van der Veen, H., Wijffels, M. M. E., Willems, L. N. A., Sterk, P. J., Mauad, T., Groningen Research Institute for Asthma and COPD (GRIAC), Guided Treatment in Optimal Selected Cancer Patients (GUTS), Life Course Epidemiology (LCE), Lifestyle Medicine (LM), and GLUCOLD Study Grp
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Respiratory Mucosa ,Pulmonary and Respiratory Medicine ,Male ,Pathology ,medicine.medical_specialty ,CHRONIC MUCUS HYPERSECRETION ,Bronchi ,LUNG HEALTH ,GOBLET CELL ,PERIPHERAL AIRWAYS ,OBSTRUCTIVE PULMONARY-DISEASE ,Epithelial squamous cell ,AIR-FLOW OBSTRUCTION ,Pulmonary Disease, Chronic Obstructive ,Metaplasia ,medicine ,EX-SMOKERS ,Humans ,Respiratory system ,Aged ,Cell Proliferation ,lcsh:RC705-779 ,Goblet cell ,COPD ,business.industry ,Cell growth ,Research ,CURRENT SMOKERS ,Cell Differentiation ,lcsh:Diseases of the respiratory system ,Middle Aged ,HUMAN NEUTROPHIL DEFENSINS ,medicine.disease ,Epithelium ,respiratory tract diseases ,medicine.anatomical_structure ,Cross-Sectional Studies ,Female ,Smoking Cessation ,Human medicine ,medicine.symptom ,business ,GROWTH-FACTOR RECEPTOR - Abstract
Background Chronic Obstructive Pulmonary Disease (COPD) is associated with bronchial epithelial changes, including squamous cell metaplasia and goblet cell hyperplasia. These features are partially attributed to activation of the epidermal growth factor receptor (EGFR). Whereas smoking cessation reduces respiratory symptoms and lung function decline in COPD, inflammation persists. We determined epithelial proliferation and composition in bronchial biopsies from current and ex-smokers with COPD, and its relation to duration of smoking cessation. Methods 114 COPD patients were studied cross-sectionally: 99 males/15 females, age 62 ± 8 years, median 42 pack-years, no corticosteroids, current (n = 72) or ex-smokers (n = 42, median cessation duration 3.5 years), postbronchodilator FEV1 63 ± 9% predicted. Squamous cell metaplasia (%), goblet cell (PAS/Alcian Blue+) area (%), proliferating (Ki-67+) cell numbers (/mm basement membrane), and EGFR expression (%) were measured in intact epithelium of bronchial biopsies. Results Ex-smokers with COPD had significantly less epithelial squamous cell metaplasia, proliferating cell numbers, and a trend towards reduced goblet cell area than current smokers with COPD (p = 0.025, p = 0.001, p = 0.081, respectively), but no significant difference in EGFR expression. Epithelial features were not different between short-term quitters ( Conclusion Ex-smokers with COPD had less bronchial epithelial remodelling than current smokers, which was only observed after long-term smoking cessation (>3.5 years). Trial registration NCT00158847
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- 2007
303. TxQoS : a case analysis
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Wang, T., Vonk, J., Grefen, P.W.P.J., and Information Systems IE&IS
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Transaction support is vital to ensure robust and reliable execution for collaborative business processes that are usually long-lasting and built upon heterogeneous applications. Contracts regulate relationships between collaborating parties along the processes so that the business trustworthiness is guaranteed. In this paper, we analyze and discuss a real-life business process from both contractual and transactional per- spectives. We propose the use of Transactional Quality of Service (TxQoS) specification in Service Level Agreements (SLAs) to infuse transactional semantics into contracts. Our proposed enforcement of TxQoS in contract-driven service-oriented business process contributes in two ways. First it facilitates unambiguous understanding of relia- bility between the consumers and the providers. Second it enhances execution reliability of such processes.
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- 2007
304. TxQoS : concepts, scenario, and framework
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Wang, T., Grefen, P.W.P.J., Vonk, J., and Information Systems IE&IS
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We have proposed the TxQoS (Transactional Quality of Service) approach to infuse transactional semantics into contracts so that a gap between business and technical communities with regard to transaction awareness is filled. In this paper we continue to refine the proposed TxQoS concepts in SOA (Service Oriented Architecture) context. We illustrate the complete TxQoS picture by a scenario with three parties interacting through the four phases of a TxQoS lifecycle. The specification of the four TxQoS attributes is discussed in detail to demonstrate how the TxQoS concepts are operationalized. To support the TxQoS scenario, we present a framework containing an architecture, a mapping and matching model and a monitoring mechanism. With in-depth investigation of various aspects of the TxQoS framework, we aim to deliver a proactive approach of transaction management that is feasible, extensible and effective to enhance process and service reliability.
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- 2007
305. A dual view to facilitate transactional QoS
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Vonk, J., Wang, T., Grefen, P.W.P.J., and Information Systems IE&IS
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Organizations increase their cooperations more and more because of the globalization of markets and because of in- creasing complexity of products, be they physical or non- physical (services). However, to fully capitalize on the pos- sibilities for cooperation, automatic support is required that enables rapid decision making in selecting (or changing) which organizations to cooperate with, as well as support for setting up the infrastructure to enact the agreed upon co- operation. Cooperating organizations together form a vir- tual enterprise.
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- 2007
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306. Vacuolar invertase regulates elongation of Arabidopsis thaliana roots as revealed by QTL and mutant analysis
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Sergeeva, L., Keurentjes, J., Bentsink, L., Vonk, J., van der Plas, L., and Koornneef, M.
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- 2006
307. Building a business transaction framework based on abstract transaction constructs
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Wang, T., Vonk, J., Grefen, P.W.P.J., and Information Systems IE&IS
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ComputerApplications_COMPUTERSINOTHERSYSTEMS - Abstract
Transaction support is vital for reliability of business processes which nowadays can involve dynamically composed services across organizational boundaries. However, no single transaction model is comprehensive enough to accommodate various transactional properties demanded by those processes. Therefore we develop the Business Transaction Framework, which is based on Abstract Transactional Constructs (ATCs). ATCs are abstract types of existing transaction models that can be composed and executed in a service-oriented transaction framework according to the ATC algebra. By selecting and composing ATCs on demand, flexible and reliable process execution is guaranteed.
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- 2006
308. Genes and pathways underlying susceptibility to impaired lung function in the context of environmental tobacco smoke exposure.
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de Jong, K., Vonk, J. M., Imboden, M., Lahousse, L., Hofman, A., Brusselle, G. G., Probst-Hensch, N. M., Postma, D. S., and Boezen, H. M.
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LUNG diseases , *SMOKING , *DISEASE susceptibility , *GENOMES , *GENETICS , *APOPTOSIS , *CELLULAR signal transduction , *GENETIC polymorphisms , *LUNGS , *MOLECULAR structure , *PASSIVE smoking , *TIME , *TRANSFERASES , *TUMOR necrosis factors , *PHENOTYPES , *VITAL capacity (Respiration) , *SEQUENCE analysis - Abstract
Background: Studies aiming to assess genetic susceptibility for impaired lung function levels upon exposure to environmental tobacco smoke (ETS) have thus far focused on candidate-genes selected based on a-priori knowledge of potentially relevant biological pathways, such as glutathione S-transferases and ADAM33. By using a hypothesis-free approach, we aimed to identify novel susceptibility loci, and additionally explored biological pathways potentially underlying this susceptibility to impaired lung function in the context of ETS exposure.Methods: Genome-wide interactions of single nucleotide polymorphism (SNP) by ETS exposure (0 versus ≥1 h/day) in relation to the level of forced expiratory volume in one second (FEV1) were investigated in 10,817 subjects from the Dutch LifeLines cohort study, and verified in subjects from the Swiss SAPALDIA study (n = 1276) and the Dutch Rotterdam Study (n = 1156). SNP-by-ETS exposure p-values obtained from the identification analysis were used to perform a pathway analysis.Results: Fourty Five SNP-by-ETS exposure interactions with p-values <10-4 were identified in the LifeLines study, two being replicated with nominally significant p-values (<0.05) in at least one of the replication cohorts. Three pathways were enriched in the pathway-level analysis performed in the identification cohort LifeLines, i.E. the apoptosis, p38 MAPK and TNF pathways.Conclusion: This unique, first genome-wide gene-by-ETS interaction study on the level of FEV1 showed that pathways previously implicated in chronic obstructive pulmonary disease (COPD), a disease characterized by airflow obstruction, may also underlie susceptibility to impaired lung function in the context of ETS exposure. [ABSTRACT FROM AUTHOR]- Published
- 2017
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309. PTTG1 IP and MAML3, novel genomewide association study genes for severity of hyperresponsiveness in adult asthma.
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Nieuwenhuis, M. A. E., Vonk, J. M., Himes, B. E., Sarnowski, C., Minelli, C., Jarvis, D., Bouzigon, E., Nickle, D. C., Laviolette, M., Sin, D., Weiss, S. T., Berge, M., Koppelman, G. H., and Postma, D. S.
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BRONCHIAL spasm , *SEVERITY of illness index , *ASTHMA , *ADRENOCORTICAL hormones , *PHOSPHODIESTERASES , *GENETICS - Abstract
Background The severity of bronchial hyperresponsiveness ( BHR) is a fundamental feature of asthma. The severity of BHR varies between asthmatics and is associated with lack of asthma control. The mechanisms underlying this trait are still unclear. This study aimed to identify genes associated with BHR severity, using a genomewide association study ( GWAS) on the slope of BHR in adult asthmatics. Methods We performed a GWAS on BHR severity in adult asthmatics from the Dutch Asthma GWAS cohort ( n = 650), adjusting for smoking and inhaled corticosteroid use, and verified results in three other cohorts. Furthermore, we performed e QTL and co-expression analyses in lung tissue. Results In the discovery cohort, one genomewide significant hit located in phosphodiesterase 4D, c AMP-specif ( PDE4D) and 26 SNPs with P-values < 1*10−5 were found. None of our findings replicated in adult and childhood replication cohorts jointly. In adult cohorts separately, rs1344110 in pituitary tumour-transforming 1 interacting protein ( PTTG1 IP) and rs345983 in Mastermind-like 3 ( MAML3) replicated nominally; minor alleles of rs345983 and rs1344110 were associated with less severe BHR and higher lung tissue gene expression. PTTG1 IP showed significant co-expression with pituitary tumour-transforming 1, the binding factor of PTTG1lP, and with vimentin and E-cadherin1. MAML3 co-expressed significantly with Mastermind-like 2 ( MAML2), both involved in Notch signalling. Conclusions PTTG1 IP and MAML3 are associated with BHR severity in adult asthma. The relevance of these genes is supported by the e QTL analyses and co-expression of PTTG1lP with vimentin and E-cadherin1, and MAML3 with MAML2. [ABSTRACT FROM AUTHOR]
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- 2017
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310. An analysis of transactional workflow support
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Grefen, P.W.P.J., Vonk, J., and Information Systems IE&IS
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Structured business processes are the veins of complex business organizations. Workflows have generally been accepted as a means to model and support these processes, be they interactive or completely automated. The fact that these processes require robustness and clear semantics has generally been observed and has led to the combination of workflow and transaction concepts. Many variations on this com- bination exist, leading to many approaches to transactional workflow support. No clear classification of these approaches has been developed however, resulting in a badly understood field. To deal with this problem, we describe a clear taxonomy of transactional workflow models in this paper, based on the relation between workflow and transaction concepts. We show that the classes in the taxonomy can be directly related to specification language and architecture types for workflow and transaction management systems. We compare the various classes with respect to their characteristics and place existing approaches in the taxonomy. We cover both 'traditional' workflow approaches and more recent web-based approaches, including inter-organizational workflow approaches. Together, this paper offers a well-structured and concise analysis of the field of transactional business process support.
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- 2005
311. Flexible business transaction composition in service-oriented environments
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Kratz, B., Wang, T., Vonk, J., Grefen, P.W.P.J., and Information Systems IE&IS
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Reliability and clear semantics in the presence of errors are of key importance for automated execution of business processes. Consequently, transaction support is a major ingredient for business process automation in a Service-Oriented Computing (SOC) environment. As automated business processes become more complex, different parts of business processes have different transaction requirements. This implies that no single transaction model can accommodate for all possible transactional requirements. Therefore, we propose the Business Transaction Framework (BTF), catering for flexible composition of a variety of transaction models. Composition is supported in both a hi- erarchical and a choreographed way and is governed by composition rules, including inherent transaction constraints and application domain specific rules. Transaction models are represented by Abstract Transactional Constructs, which can be parameterized to tune the desired transactional behavior. Multiple composed transactions can be associated to a business process type, such that precise transaction semantics can be selected per process instance. The BTF is supported by a three-level architecture, laying the basis for flexible, transactional intra- and inter-organizational business process execution on a web service based platform.
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- 2005
312. NOS1: A Susceptibility Gene for Reduced Level of FEV1in the Setting of Pesticide Exposure
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de Jong, K., primary, Vonk, J. M., additional, Kromhout, H., additional, Vermeulen, R., additional, Postma, D. S., additional, and Boezen, H. M., additional
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- 2014
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313. Linkages between benthic microbial and freshwater insect communities in degraded peatland ditches
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Whatley, Merrin H., primary, van Loon, E. Emiel, additional, Cerli, Chiara, additional, Vonk, J. Arie, additional, van der Geest, Harm G., additional, and Admiraal, Wim, additional
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- 2014
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314. Suspended organic particles drive the development of attached algal communities in degraded peatlands
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Goldenberg Vilar, Alejandra, primary, Vonk, J. Arie, additional, Bichebois, Simon, additional, van Dam, Herman, additional, Admiraal, Wim, additional, and van der Geest, Harm G., additional
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- 2014
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315. Size‐Mediated Effects of Water‐Flow Velocity on Riverine Fish Species
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Del Signore, A., primary, Lenders, H. J. R., additional, Hendriks, A. J., additional, Vonk, J. A., additional, Mulder, C., additional, and Leuven, R. S. E. W., additional
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- 2014
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316. Typology of diatom communities in the Dutch delta: Recognizing patterns of environmental drivers in nutrient rich ditches
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Goldenberg Vilar, Alejandra, primary, van Dam, Herman, additional, Vonk, J. Arie, additional, van der Geest, Harm G., additional, and Admiraal, Wim, additional
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- 2014
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317. Serum uric acid levels and cancer mortality risk among males in a large general population-based cohort study
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Taghizadeh, N., primary, Vonk, J. M., additional, and Boezen, H. M., additional
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- 2014
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318. The role of emergent vegetation in structuring aquatic insect communities in peatland drainage ditches
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Whatley, Merrin H., primary, van Loon, E. Emiel, additional, Vonk, J. Arie, additional, van der Geest, Harm G., additional, and Admiraal, Wim, additional
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- 2014
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319. Nocturnal non-invasive ventilation in COPD patients with prolonged hypercapnia after ventilatory support for acute respiratory failure: a randomised, controlled, parallel-group study
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Struik, F M, primary, Sprooten, R T M, additional, Kerstjens, H A M, additional, Bladder, G, additional, Zijnen, M, additional, Asin, J, additional, Cobben, N A M, additional, Vonk, J M, additional, and Wijkstra, P J, additional
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- 2014
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320. Eutrophication decreases distance decay of similarity in diatom communities
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Goldenberg Vilar, Alejandra, primary, van Dam, Herman, additional, van Loon, Emiel E., additional, Vonk, J. Arie, additional, van Der Geest, Harm G., additional, and Admiraal, Wim, additional
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- 2014
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321. Release of isothiocyanates does not explain the effects of biofumigation with Indian mustard cultivars on nematode assemblages
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Vervoort, Mariëtte T.W., primary, Vonk, J. Arie, additional, Brolsma, Karst M., additional, Schütze, Wolfgang, additional, Quist, Casper W., additional, de Goede, Ron G.M., additional, Hoffland, Ellis, additional, Bakker, Jaap, additional, Mulder, Christian, additional, Hallmann, Johannes, additional, and Helder, Johannes, additional
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- 2014
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322. Calculated radiation exposure for trauma patients is lower when using the New Injury Severity Score versus the Injury Severity Score to calculate injury severity
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Wagner, M, primary, Vonk, J, additional, Wichman, C, additional, Hegde, A, additional, and Oliveto, J, additional
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- 2014
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323. Cross-Organizational Transaction Support for E-Services in Virtual Enterprises
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Vonk, J., Grefen, P.W.P.J., and Information Systems IE&IS
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EWI-6328 ,ComputingMilieux_LEGALASPECTSOFCOMPUTING ,DB-WFM: WORKFLOW MANAGEMENT ,SCS-Services ,IR-63249 - Abstract
In recent years, workflow management systems have become an accepted technology to support automation in process-centric environments. Lately, organizations concentrate more and more on their core business processes while outsourcing supporting processes to other organizations, thereby forming virtual enterprises. The organizations forming the virtual enterprise operate in a B2B e-commerce setting in which provider organizations perform e-services for consumer organizations. To apply workflow management technology in these virtual enterprises, current workflow management systems need to be extended to offer support for cross-organizational processes. Transaction support, already considered an important issue in intra-organizational workflow management systems, must be extended to deal with the cross-organizational aspects as well. This paper presents a high-level, compensation based transaction model and a flexible architecture to support this transaction model, as required by cross-organizational workflow processes. Characteristic of the model is the flexibility in rollback semantics by combining rollback modes and rollback scopes. This is supported by a dynamically composed architecture that is configured using the agreements that are specified in an electronic contract that has been established between the participating organizations. The transaction model supported by the dynamically composed architecture is implemented in a prototype system, based on commercial workflow management technology.
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- 2003
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324. Moa and the multi-model architecture: a new perspective on NF2
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van Keulen, Maurice, Marik, V., Vonk, J., Retschitzegger, W., de Vries, A.P., Stepankova, O., Flokstra, Jan, Blok, H.E., and Databases (Former)
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EWI-7270 ,METIS-215977 ,DB-XMLDB: XML DATABASES ,IR-66449 - Abstract
Advanced non-traditional application domains such as geographic information systems and digital library systems demand advanced data management support. In an effort to cope with this demand, we present the concept of a novel multi-model DBMS architecture which provides evaluation of queries on complexly structured data without sacrificing efficiency. A vital role in this architecture is played by the Moa language featuring a nested relational data model based on XNF2, in which we placed renewed interest. Furthermore, extensibility in Moa avoids optimization obstacles due to black-box treatment of ADTs. The combination of a mapping of queries on complexly structured data to an efficient physical algebra expression via a nested relational algebra, extensibility open to optimization, and the consequently better integration of domain-specific algorithms, makes that the Moa system can efficiently and effectively handle complex queries from non-traditional application domains.
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- 2003
325. Investigating the dose-response relation between air pollution and total mortality in the APHEA-2 multicity project
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Samoli, E Touloumi, G Zanobetti, A Le Tertre, A and Schindler, C Atkinson, R Vonk, J Rossi, G Saez, M and Rabczenko, D Schwartz, J Katsouyanni, K
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Background: Several recent studies have reported significant health effects of air pollution even at low levels of air pollutants, but in most of these studies linear non-threshold relations were assumed. Aims: To investigate the NO2 mortality dose-response association in nine cities participating in the APHEA-2 project using two different methods: the meta-smooth and the cubic spline method. Methods: The meta-smooth method developed by Schwartz and Zanobetti is based on combining individual city non-parametric smooth curves; the cubic spline method developed within the APHEA-2 project combines individual city estimates of cubic spline shaped dose-response relations. The metasmooth method is easier and faster to implement, but the cubic spline method is more flexible for further investigation of possible heterogeneity in the dose-response curves among cities. Results: In the range of the pollutant common to all cities the two methods gave similar and comparable curves. Using the cubic spline method it was found that smoking prevalence acts as an effect modifier with larger NO2 effects on mortality at lower smoking prevalence. Conclusions: The NO2-mortality association in the cities included in the present analysis, could be adequately estimated using the linear model. However, investigation of the city specific dose-response curves should precede the application of linear models.
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- 2003
326. PM2.5 Average Exposure Index 2009-2011 in the Netherlands
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ILG ; MLG ; L&E, M&V, Mooibroek D, Vonk J, Velders GJM, Hafkenscheid TL, Hoogerbrugge R, ILG ; MLG ; L&E, M&V, Mooibroek D, Vonk J, Velders GJM, Hafkenscheid TL, and Hoogerbrugge R
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RIVM rapport:De luchtkwaliteit in Europa is de afgelopen dertig jaar substantieel verbeterd. Toch blijft luchtverontreiniging, en dan vooral fijn stof, een belangrijke bedreiging voor de volksgezondheid. De laatste jaren is er meer aandacht voor de schadelijke effecten van kleinere deeltjes van fijn stof, bijvoorbeeld PM2.5 (deeltjes met een diameter tot 2,5 micrometer). Aangenomen wordt dat deze kleine deeltjes, zeker op de lange termijn, zeer schadelijk zijn voor de gezondheid. In de Europese Richtlijn uit 2008 over de luchtkwaliteit en schonere lucht voor Europa zijn daarom specifiek grenzen gesteld aan de concentratieniveaus van PM2.5. Zo moeten lidstaten onder andere de gemiddelde blootstelling aan PM2.5 over een periode van drie jaar bepalen, de zogeheten Average Exposure Index (AEI). Afhankelijk van de uitkomst zijn lidstaten vervolgens verplicht in 2018-2020 de gemiddelde blootstelling aan PM2.5 te verlagen. Het RIVM heeft de AEI van 2009 tot en met 2011 berekend op basis van PM2.5-metingen op twaalf stedelijke achtergrondlocaties. De gemiddelde blootstellingsindex (AEI) in de periode 2009-2011 is voor Nederland vastgesteld op 17,0 microgram per kubieke meter. Hieraan is een reductiedoelstelling gekoppeld van 15 procent. Om deze doelstelling te halen moet de gemiddelde blootstellingindex (AEI) in de stedelijke achtergrond in Nederland tussen 2018 en 2020 met circa 2,6 microgram per kubieke meter dalen. Op basis van modelberekeningen met verschillende economische groeiscenario's wordt een reductie berekend van 15 tot 17 procent voor 2018-2020. Daarmee zou Nederland voldoen aan de reductiedoelstelling. Door de marge in deze uitkomst en andere veel grotere onzekerheden in de modelberekening kan de te verwachten reductie zowel hoger als lager uitvallen. Het is belangrijk om de komende jaren te blijven volgen in welke mate de emissie en concentratie van PM2,5 afnemen. Indien nodig kunnen er dan extra maatregelingen worden overwogen., Over the last thirty years the air quality in Europe has improved substantially. Nevertheless, air pollution, and especially particulate matter, still remains a major threat to public health. In recent years, increasing attention has focused on the adverse effects of the "fine particles" of particulate matter, such as PM2.5 (particles with a diameter of <2.5 µm). These small particles are considered to be very harmful to human health, in particular over the long term. The European Directive on ambient air quality and cleaner air for Europe, which entered into force in 2008, establishes specific limits on the concentration levels of PM2.5. Among other things the Directive requires that each Member State determine the average exposure to PM2.5 over a three-year period, the so-called Average Exposure Index (AEI). Depending on the outcome, Member States are then obliged to decrease the average exposure to PM2.5 in 2018-2020. The National Institute for Public Health and the Environment (RIVM) has therefore measured PM2.5 levels at twelve urban background locations in the period 2009-2011 and calculated the AEI based on these measurements. For the Netherlands, the AEI in the period 2009-2011 has been set at 17.0 micrograms per cubic meter. A reduction target of 15% has been linked to this value. To achieve this target, the AEI in the urban background in the Netherlands between 2018 and 2020 has to decrease by approximately 2.6 micrograms per cubic meter. Model calculations using different economic growth scenarios predict a reduction ranging from 15 to 17% for the period 2018-2020, indicating the Netherlands should meet the reduction target. However, due to the margin in the model calculations as well as other, much larger uncertainties in these calculations, the expected reduction can ultimately be either higher or lower. It is therefore important that the extent to which annual emissions and concentrations of PM2.5 decrease are monitored on an annual basis. If necessary
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- 2013
327. Emissions of transboundary air pollutants in the Netherlands 1990-2011 : Netherlands Informative inventory report 2013
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L&E, M&V, Jimmink BA, ten Broeke HM, Coenen PWHG, Droge R, Geilenkirchen GP, Leekstra AJ, van der Maas CWM, te Molder RAB, Peek CJ, Vonk J, Wever D, L&E, M&V, Jimmink BA, ten Broeke HM, Coenen PWHG, Droge R, Geilenkirchen GP, Leekstra AJ, van der Maas CWM, te Molder RAB, Peek CJ, Vonk J, and Wever D
- Abstract
RIVM rapport:Emissies Nederland in 2010 onder plafonds De Nederlandse uitstoot van stikstofoxiden (NOx) is in 2011 zodanig afgenomen dat het voor het eerst kwam onder het maximum dat de Europese Unie daaraan voor 2010 heeft gesteld. Hiermee voldoet Nederland aan alle vier de zogeheten nationale emissieplafonds (NEC). Voor ammoniak, zwaveldioxide en niet-methaan vluchtige organische stoffen (NMVOS) voldeed Nederland al in 2010 aan deze plafonds. Dit blijkt uit de toelichting van het RIVM op de Nederlandse emissiecijfers van grootschalige luchtverontreinigende stoffen, het Informative Inventory Report (IIR) 2013. Deze cijfers betreffen de uitstoot van zwaveldioxide, stikstofoxiden, NMVOS, koolmonoxide, ammoniak, fijn stof (PM10), zware metalen en persistente organische stoffen (POP's). De uitstoot van al deze stoffen is tussen 1990 en 2011 gedaald. Dit komt vooral door schonere auto's en brandstoffen en door emissiebeperkende maatregelen van industriële sectoren. Lagere uitstoot van schadelijke stoffen door oude personenauto's Door de jaren heen resulteren nieuwe methoden om de emissies te berekenen in nauwkeurigere uitkomsten. Zo blijkt onder andere uit dit verslagjaar dat de emissieberekening voor personenauto's in Nederland is verbeterd. Daaruit volgt dat de uitstoot van schadelijke stoffen door benzineauto's zonder katalysator lager is dan werd verondersteld. Dat komt vooral doordat deze auto's gemiddeld op jaarbasis minder kilometers rijden dan eerder werd gedacht. Het CBS heeft afgelopen jaar de gereden kilometers van personenauto's nauwkeuriger in beeld gebracht door ze specifieker dan voorheen uit te splitsen naar leeftijd en brandstoftype. Tussen 2005 en 2010 valt hierdoor de totale uitstoot van stikstofoxiden door personenauto's, zowel diesel als benzine, circa 15 procent lager uit dan vorig jaar was berekend. De uitstoot van NMVOS is dit jaar zelfs 25 procent lager berekend. Jonge dieselauto's vervuilender dan gedachtDe uitstoot van stikstofoxiden door zogeheten Euro-5, Emissions the Netherlands in 2011 under national ceilings Emissions of nitrogen oxides (NOx) have decreased in 2011 to the level that for the first time they were below the cap the European Union has set for 2010. Herewith, the Netherlands comply with all four so-called emission ceilings (NEC). For ammonia, sulphur dioxide and nonmethane volatile organic compounds (NMVOC) the Netherlands already complied with the ceilings in 2010. This has become apparent from RIVM's explanation of Dutch emission data on transboundary air polluting substances, in the Informative Inventory Report (IIR) 2013. This concerns emissions of sulfur dioxide, nitrogen oxides, NMVOC, carbon monoxide, ammonia, particulate matter (PM10), heavy metals and persistent organic pollutants (POPs) which have all decreased over the 1990-2011 period. The downward trend may in particular be attributed to cleaner fuels, cleaner car engines and to emission reductions in the industrial sectors. Lower emissions of pollutants from old passenger cars New methods of calculating emissions, over the years, have led to results that are ever more accurate. This year, the largest improvement was made in emission calculations for passenger cars in the Netherlands. Consequently, emissions from gasoline cars without catalytic converter appeared to be lower than previously calculated. In particular, this is because these cars on average drive fewer kilometres per year than previously assumed. Statistics Netherlands (CBS) have monitored the kilometres driven by passenger cars more accurately, by splitting them more specifically by age and fuel type. Between 2005 and 2010, the total NOx emission by passenger cars, both dieselfuelled, as gasoline fuelled, appeared to be about 15 per cent lower than calculated last year. The calculated NMVOC emission was even 25 per cent lower. Young diesel cars more polluting than expected Nitrogen oxides emissions from so-called Euro-5 diesel cars appear to be higher than previously assume
- Published
- 2013
328. Greenhouse Gas Emissions in The Netherlands 1990-2011
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L&E, M&V, Coenen PWHG, van der Maas CWM, Zijlema PJ, Arets EJMM, Baas K, van den Berghe ACWM, te Biesebeek JD, Brandt AT, Geilenkirchen G, van der Hoek KW, te Molder R, Droge R, Montfoort JA, Peek CJ, Vonk J, L&E, M&V, Coenen PWHG, van der Maas CWM, Zijlema PJ, Arets EJMM, Baas K, van den Berghe ACWM, te Biesebeek JD, Brandt AT, Geilenkirchen G, van der Hoek KW, te Molder R, Droge R, Montfoort JA, Peek CJ, and Vonk J
- Abstract
RIVM rapport:In 2011 is de totale emissie in Nederland van broeikasgassen, zoals CO2, methaan en lachgas, met ongeveer 7 procent gedaald ten opzichte van 2010. De daling komt vooral door een lager brandstofgebruik in de energiesector en de petrochemische industrie. Dit lijkt een gevolg van de economische recessie en van een geringere elektriciteitsproductie in Nederland. Daarnaast is in 2011 ten opzichte van 2010 minder energie verbruikt om huizen en kantoren te verwarmen. Dat kwam vooral doordat in 2010 zowel de eerste als de laatste maanden relatief koud waren. Totale uitstoot 9 procent lager dan basisjaar Kyoto De totale uitstoot van broeikasgassen wordt uitgedrukt in CO2-equivalenten en bedroeg in 2011 voor Nederland 194,4 miljard kilogram (megaton of teragram). Ten opzichte van de uitstoot in het Kyoto-basisjaar (213,2 miljard kilogram CO2-equivalenten) is dit een afname van ongeveer 9 procent. Het basisjaar, dat afhankelijk van het broeikasgas 1990 of 1995 is, dient voor het Kyoto-protocol als referentie voor de uitstoot van broeikasgassen. Deze getallen zijn exclusief de zogeheten LULUCF-emissies (Land Use, Land Use Change and Forestry). Landen zijn voor het Kyoto-protocol verplicht om de totale uitstoot van broeikasgassen op twee manieren te rapporteren: met en zonder het soort landgebruik en de verandering daarin. Dit is namelijk van invloed op de uitstoot van broeikasgassen. Voorbeelden zijn natuurontwikkeling (dat CO2 bindt) of ontbossing (waardoor CO2 wordt uitgestoten). Overige onderdelen inventarisatie Het RIVM stelt jaarlijks op verzoek van het ministerie van Infrastructuur en Milieu (IenM) de inventarisatie van broeikasgasemissies op. De inventarisatie bevat trendanalyses om ontwikkelingen in de uitstoot van broeikasgassen tussen 1990 en 2011 te verklaren, en een analyse van de onzekerheid in deze getallen. Ook is aangegeven welke bronnen het meest aan deze onzekerheid bijdragen. Daarnaast biedt de inventarisatie documentatie van d, Total greenhouse gas emissions from The Netherlands in 2011 decreased by approximately 7 per cent compared with 2010 emissions. This decrease is mainly the result of decreased fuel combustion in the Energy sector (less electricity production) and in the petrochemical industry. Fuel use for space heating decreased due to the mild winter compared with the very cold 2010 winter. In 2011, total direct greenhouse gas emissions (excluding emissions from LULUCF - land use, land use change and forestry) in The Netherlands amounted to 194.4 Tg CO2 eq. This is approximately 9 per cent below the emissions in the base year 2 (213.2 Tg CO2 eq). This report documents the Netherlands' 2012 annual submission of its greenhouse gas emissions inventory in accordance with the guidelines provided by the United Nations Framework Convention on Climate Change (UNFCCC), the Kyoto Protocol and the European Union's Greenhouse Gas Monitoring Mechanism. The report comprises explanations of observed trends in emissions; a description of an assessment of key sources and their uncertainty; documentation of methods, data sources and emission factors applied; and a description of the quality assurance system and the verification activities performed on the data.
- Published
- 2013
329. VEGFA variants are associated with pre-school lung function, but not neonatal lung function
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Kreiner-Møller, E, Chawes, B L K, Vissing, N H, Koppelman, G H, Postma, D S, Madsen, J S, Olsen, D A, Baty, F, Vonk, J M, Kerkhof, M, Sleiman, P, Hakonarsson, H, Mortensen, L J, Poorisrisak, P, Bisgaard, H, Bønnelykke, K, Kreiner-Møller, E, Chawes, B L K, Vissing, N H, Koppelman, G H, Postma, D S, Madsen, J S, Olsen, D A, Baty, F, Vonk, J M, Kerkhof, M, Sleiman, P, Hakonarsson, H, Mortensen, L J, Poorisrisak, P, Bisgaard, H, and Bønnelykke, K
- Published
- 2013
330. Moa: extensibility and efficiency in querying nested data
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van Keulen, Maurice, Vonk, J., de Vries, A.P., Flokstra, Jan, Blok, H.E., and Databases (Former)
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Nested relational algebra ,METIS-209538 ,IR-38261 ,NF2 ,advanced data management ,DBMS architecture ,database extensibility ,DB-XMLDB: XML DATABASES ,EWI-7671 - Abstract
Advanced non-traditional application domains such as geographic information systems and digital library systems demand advanced data management support. In an effort to cope with this demand, we present a novel multi-model DBMS architecture which provides efficient evaluation of queries on complexly structured data. A vital role in this architecture is played by the Moa language featuring a nested relational data model based on XNF2, in which we placed renewed interest. Furthermore, the architecture allows extensibility on all of its levels providing the means to better integrate domain-specific algorithms into the system. In addition to this, the extensibility of the Moa language is designed in a way that optimization obstacles due to blackbox treatment of ADTs is avoided. This combination of well-integrated domainspecific algorithms, extensibility open to optimization, and a mapping of queries on complexly structured data to an efficient physical algebra expression via a nested relational algebra, makes that the Moa system can efficiently handle complex queries from non-traditional application domains.
- Published
- 2002
331. Het XYZ van Amsterdam
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Kruizinga, J., Vermeer, G., Vonk, J.., van Tulder, R., and History of Arts
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- 2002
332. An integrated DMMDBMS prototype supporting video retrieval and security
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van Keulen, Maurice, Vonk, J., and Databases (Former)
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- 2002
333. Report on the development issues: Techniques
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van Keulen, Maurice, Vonk, J., and Databases (Former)
- Published
- 2002
334. Activation of old carbon by erosion of coastal and subsea permafrost in Arctic Siberia
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Vonk, J. E., Sanchez-Garcia, Laura, van Dongen, B. E., Alling, Vanja, Kosmach, D., Charkin, A., Semiletov, I. P., Dudarev, O. V., Shakhova, N., Roos, P., Eglinton, T. I., Andersson, A., Gustafsson, O., Vonk, J. E., Sanchez-Garcia, Laura, van Dongen, B. E., Alling, Vanja, Kosmach, D., Charkin, A., Semiletov, I. P., Dudarev, O. V., Shakhova, N., Roos, P., Eglinton, T. I., Andersson, A., and Gustafsson, O.
- Abstract
The future trajectory of greenhouse gas concentrations depends on interactions between climate and the biogeosphere(1,2). Thawing of Arctic permafrost could release significant amounts of carbon into the atmosphere in this century(3). Ancient Ice Complex deposits outcropping along the similar to 7,000-kilometre-long coastline of the East Siberian Arctic Shelf (ESAS)(4,5), and associated shallow subsea permafrost(6,7), are two large pools of permafrost carbon(8), yet their vulnerabilities towards thawing and decomposition are largely unknown(9-11). Recent Arctic warming is stronger than has been predicted by several degrees, and is particularly pronounced over the coastal ESAS region(12,13). There is thus a pressing need to improve our understanding of the links between permafrost carbon and climate in this relatively inaccessible region. Here we show that extensive release of carbon from these Ice Complex deposits dominates (57 +/- 2 per cent) the sedimentary carbon budget of the ESAS, the world's largest continental shelf, overwhelming the marine and topsoil terrestrial components. Inverse modelling of the dual-carbon isotope composition of organic carbon accumulating in ESAS surface sediments, using Monte Carlo simulations to account for uncertainties, suggests that 44 +/- 10 teragrams of old carbon is activated annually from Ice Complex permafrost, an order of magnitude more than has been suggested by previous studies(14). We estimate that about two-thirds (66 +/- 16 per cent) of this old carbon escapes to the atmosphere as carbon dioxide, with the remainder being re-buried in shelf sediments. Thermal collapse and erosion of these carbon-rich Pleistocene coastline and seafloor deposits may accelerate with Arctic amplification of climate warming(2,13)., AuthorCount:13
- Published
- 2012
- Full Text
- View/download PDF
335. Greenhouse Gas Emissions in the Netherlands 1990-2010 : National Inventory Report 2012
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CMM, mev, Coenen PWHG, van der Maas CWM, Zijlema PJ, Baas K, van den Berghe ACWM, te Biesebeek JD, Brandt AT, Geilenkirchen G, van der Hoek KW, te Molder R, Droge R, Montfoort JA, Peek CJ, Vonk J, van den Wyngaert I, CMM, mev, Coenen PWHG, van der Maas CWM, Zijlema PJ, Baas K, van den Berghe ACWM, te Biesebeek JD, Brandt AT, Geilenkirchen G, van der Hoek KW, te Molder R, Droge R, Montfoort JA, Peek CJ, Vonk J, and van den Wyngaert I
- Abstract
RIVM rapport:In 2010 is de Nederlandse uitstoot van broeikasgassen, waaronder CO2, methaan en lachgas met ongeveer 6 procent gestegen ten opzichte van de emissie in 2009. Deze stijging komt vooral door een hoger brandstofverbruik in de industrie en energiesector als gevolg van de destijds herstellende economie. Daarnaast is vanwege het winterweer gedurende de eerste en laatste maanden van 2010 meer brandstof gebruikt voor verwarming. De totale uitstoot van broeikasgas wordt uitgedrukt in CO2- equivalenten en bedroeg 210,1 Teragram (Megaton of miljard kilogram) in 2010. Dit is een afname van ongeveer 1,5 procent in vergelijking met de uitstoot van 213,3 Tg CO2-equivalenten in het Kyoto-basisjaar. Dit basisjaar, dat afhankelijk van het broeikas 1990 of 1995 is, dient als referentie voor de uitstoot van broeikasgassen volgens het Kyoto Protocol uit 1997. De geleverde cijfers zijn exclusief de emissies die afkomstig zijn uit het soort landgebruik en de verandering daarin, zoals natuurontwikkeling of ontbossing (land use, land use change and forestry, LULUCF). De getallen inclusief deze bijdrage vertonen dezelfde trend. Nationale rapportageverplichting: Dit blijkt uit de jaarlijkse inventarisatie van broeikasgasemissies die het RIVM op verzoek van het ministerie van Infrastructuur en Milieu (I&M) heeft opgesteld. Met deze inventarisatie voldoet Nederland aan de nationale rapportageverplichtingen voor 2012 van het Klimaatverdrag van de Verenigde Naties (UNFCCC), van het Kyoto Protocol en van het Bewakingsmechanisme Broeikasgassen van de Europese Unie. Overige onderdelen inventarisatie: De inventarisatie bevat verder trendanalyses om ontwikkelingen in de uitstoot van broeikasgassen tussen 1990 en 2010 te verklaren, en een analyse van de onzekerheid in de emissiesgetallen. Daarnaast staat aangegeven welke (sleutel)bronnen het meest aan deze onzekerheid bijdragen. Ook biedt de inventarisatie documentatie van de gebruikte berekeningsmethoden, databronnen en toegepaste emissiefactoren. Ten, The total greenhouse gas emission from the Netherlands in 2010 increased by approximately 6% compared to the emission in 2009. This increase is mainly the result of increased fuel combustion in the energy sector and space heating. In 2010, total direct greenhouse gas emissions (excluding emissions from LULUCF - land use, land use change and forestry) in the Netherlands amounted to 210.1 Tg CO2 eq. This is approximately 1.5% below the emissions in the base year (213.3 Tg CO2 eq). This report documents the 2012 Netherlands' annual submission of its greenhouse gas emission inventory in accordance with the guidelines provided by the United Nations Framework Convention on Climate Change (UNFCCC), the Kyoto Protocol and the European Union's Greenhouse Gas Monitoring Mechanism. The report comprises explanations of observed trends in emissions; a description of an assessment of key sources and their uncertainty; documentation of methods, data sources and emission factors applied; and a description of the quality assurance system and the verification activities performed on the data.
- Published
- 2012
336. Naleeftekorten bij luchtwassers in de intensieve veehouderij : Effect op emissie(-reductie) van ammoniak
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IMG, mev, Vonk J, van Pul WAJ, Schols E, de Groot GM, IMG, mev, Vonk J, van Pul WAJ, Schols E, and de Groot GM
- Abstract
RIVM rapport:In de intensieve veehouderij worden in toenemende mate luchtwassers ingezet om ammoniakemissies uit stallen te verminderen. Uit onderzoeken van twee inspectiediensten in 2009 en 2011 bleek dat een deel van de luchtwassers ontbreekt, uit staat of niet goed functioneert. Het RIVM heeft vervolgens berekend wat de effecten van deze bevindingen zijn op de totale ammoniakemissie uit de Nederlandse landbouw. In 2010 werd mogelijk 2,5 kiloton meer ammoniak uitgestoten dan de tot nu toe vastgestelde 107 kiloton. De berekeningen zijn uitgevoerd in opdracht van de Inspectie Leefomgeving en Transport. Met goed functionerende luchtwassers kan de ammoniakemissie uit stallen met 70 tot 95 procent verminderd worden. De wasser wordt voorgeschreven in de vergunning; in 2010 was ongeveer 20 procent van de varkensstallen ermee uitgerust. Handhavingsamenwerking Noord-Brabant constateerde in 2009 dat 40 procent van de voorgeschreven wassers niet aanwezig was of uit stond. Bij nog eens 45 procent werden andere tekortkomingen geconstateerd. De Inspectie Leefomgeving en Transport constateerde in 2011 bij 72 procent van de luchtwassers tekortkomingen, zonder deze nader te specificeren. Daarnaast werd bij een deel van de wassers geen (32 procent), of maar beperkt (39 procent) toezicht gehouden door de gemeenten. Gebaseerd op gegevens zoals die in de Emissieregistratie worden gebruikt, is tot op heden verondersteld dat in 2010 met luchtwassers 23 procent van de emissie uit varkensstallen zou worden voorkomen. Op de totale ammoniakemissie uit de landbouw vertaalt zich dit in een reductie met 4,5 procent. Uit de berekeningen blijkt echter dat in de praktijk naar schatting ongeveer de helft hiervan daadwerkelijk is gerealiseerd., In the intensive animal husbandry, air scrubbers are increasingly applied to reduce ammonia emissions from animal houses. From investigations by two inspection services in 2009 and 2011 follows that part of the air scrubbers is missing, switched off or not functioning well. The RIVM has then calculated the effects of these findings on the total ammonia emission from Dutch agriculture. In 2010 possibly 2.5 kilotons more ammonia was discharged than the until now determined 107 kilotons. The calculations were carried out by order of the Human Environment and Transport Inspectorate. With well functioning air scrubbers the ammonia emission from animal houses can be reduced by 70 to 95 percent. The scrubber is prescribed in the permit; in 2010 about 20 percent of the pig houses were equipped with them. Enforcement cooperation Noord-Brabant in 2009 found that 40 percent of the prescribed air scrubbers were absent or switched off. In another 45 percent other shortcomings were detected. The Human Environment and Transport Inspectorate found in 2011 that 72 percent of air scrubbers had shortcomings, without specifying them further. Also on part of the scrubbers no (32 percent) or only limited (39 percent) supervision was carried out by the municipality. Based on figures as those the Emission Registration uses, until now it is being assumed that in 2010 air scrubbers prevented 23 percent of the emission from pig houses. On the total ammonia emission from agriculture this translates into a reduction of 4.5 percent. From the calculations however follows that in practice, by estimation about half of this is actually realised.
- Published
- 2012
337. Emissions of transboundary air pollutants in the Netherlands 1990-2010 : Informative Inventory Report 2012
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CMM, mev, Jimmink BA, Coenen PWHG, Droge R, Geilenkirchen GP, Leekstra AJ, van der Maas CWM, te Molder RAB, Peek CJ, Vonk J, Wever D, CMM, mev, Jimmink BA, Coenen PWHG, Droge R, Geilenkirchen GP, Leekstra AJ, van der Maas CWM, te Molder RAB, Peek CJ, Vonk J, and Wever D
- Abstract
RIVM rapport:Tussen 1990 en 2010 is in Nederland de uitstoot van luchtverontreinigende stoffen gedaald. Het betreft de uitstoot van zwaveldioxide, stikstofoxiden, niet-methaan vluchtige organische stoffen (NMVOS), koolmonoxide, ammoniak, fijn stof (PM10), zware metalen en persistente organische stoffen (POP's). Deze neerwaartse trend is vooral toe te schrijven aan de introductie van schonere auto's en brandstoffen, en aan emissiebeperkende maatregelen bij industriële sectoren. Dit blijkt uit de toelichting van het RIVM op de Nederlandse emissiecijfers van grootschalige luchtverontreinigende stoffen, het Informative Inventory Report (IIR) 2012. Deze cijfers worden jaarlijks onder regie van het RIVM geleverd aan de Verenigde Naties (UNECE) en de Europese Commissie. De emissiecijfers beslaan een reeks jaren, vanaf 1990 tot het meest recente jaar. Dit keer zijn ook de geografische verdelingen van de emissiecijfers gerapporteerd, waartoe Europese lidstaten elke vijf jaar zijn verplicht. Nieuwe inzichten in de emissies van motorfietsen en bromfietsen: Door de jaren heen resulteren nieuwe methoden om de emissies te berekenen in nauwkeurigere uitkomsten. De grootste verbetering heeft dit verslagjaar plaatsgevonden in de emissieberekening van bromfietsen en motorfietsen in Nederland. Deze emissies zijn berekend met een nieuw model dat beter rekening houdt met het motorvermogen en de leeftijd van de bromfietsen en motorfietsen. Het nieuwe model laat zien dat vooral oudere motorfietsen en bromfietsen meer fijn stof (PM10) uitstoten dan eerder werd verwacht. Ook de uitstoot van stikstofoxiden ligt iets hoger dan eerder werd berekend. Motoren en bromfietsen leveren echter maar een kleine bijdrage aan de totale uitstoot van stikstofoxiden en fijn stof van wegverkeer in Nederland. Oude bromfietsen blijken ook meer koolwaterstoffen uit te stoten dan eerder werd gedacht, maar nieuwe bromfietsen blijken juist wat schoner. Als gevolg hiervan dalen de emissies van koolwaterstoffen sneller dan eerde, Emissions of air pollutants in the Netherlands have decreased over the 1990-2010 period. This concerns emissions of sulfur dioxide, nitrogen oxides, non-methane volatile organic compounds (NMVOC), carbon monoxide, ammonia, particulate matter (PM10), heavy metals and persistent organic pollutants (POPs). The downward trend may be attributed in particular to cleaner fuels, cleaner car engines and to emission reductions in the industrial sectors. This has become apparent from RIVM's explanation of Dutch emission data on transboundary air polluting substances, in the Informative Inventory Report (IIR) 2012. Every year, the RIVM submits emission data to the United Nations Economic Commission for Europe (UNECE) and the European Commission. The figures consist of emission data on a series of years, from 1990 up to the most recent year. Moreover, this year's submission also includes data on the spatial distribution of emissions, which must be reported on every five years by all European Member States. New insights into emissions from motorcycles and mopeds: New methods of calculating emissions, over the years, have led to ever more accurate results. This year, the largest improvement was made in emission calculations for motorcycles and mopeds in the Netherlands. Emissions were calculated using a new model that takes engine capacity and the age of motorcycles and mopeds more into account. This new model has shown that older motorcycles and mopeds produce higher levels of particulate matter (PM10) than estimated before. Levels of nitrogen oxide emissions also proved to be higher than calculated earlier. However, in the Netherlands, emissions from motorcycles and mopeds only represent a small share of total nitrogen oxide and particulate matter emissions from road transport. In addition, although older mopeds were shown to emit more hydrocarbons than previously estimated, newer mopeds appeared somewhat cleaner. This has resulted in a faster decrease in hydrocarbon emissions t
- Published
- 2012
338. Model, Architecture and System for Cross-Organizational Transaction Support in Virtual Enterprises
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Vonk, J., Derks, W.L.A., Grefen, P.W.P.J., Koetsier, M.J., and Databases (Former)
- Subjects
METIS-119061 ,EWI-5940 ,IR-18541 ,SCS-Services - Abstract
In recent years, workflow management systems have become an accepted technology to support automation in process-centric environments. Lately, organizations concentrate more and more on their core business processes while outsourcing supporting processes to other organizations, thereby forming virtual enterprises. To apply workflow management technology in these virtual enterprises, support for cross-organizational processes is necessary. Transaction support, already considered an important issue in intra-organizational workflow management systems, must be extended to deal with the cross-organizational aspects as well. This report presents a high-level transaction model and architecture for cross-organizational workflow processes. Characteristic of the model is the flexibility in rollback semantics by combining rollback modes and rollback scopes, supported by a dynamically generated architecture that is configured conforming to an electronic contract that has been established between the different organizations. The transaction model and architecture are independent of the underlying workflow management system platform, however, in the CrossFlow project the presented technology has been implemented on top of IBM’s MQ Series Workflow.
- Published
- 2000
339. Cross-Organizational Transaction Support for Virtual Enterprises
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Vonk, J., Derks, W.L.A., Grefen, P.W.P.J., Koetsier, M.J., Etzion, O., Scheuermann, P., and Databases (Former)
- Subjects
EWI-10565 ,SCS-Services - Published
- 2000
340. Weg met de body copy
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Vonk, J. and Ketelaar, P.E.
- Subjects
Mediated communication - Abstract
Contains fulltext : 128789.pdf (Publisher’s version ) (Open Access) 0ntbrkt
- Published
- 2000
341. Contracts for Cross-Organizational Workflow Management
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Koetsier, M.J., Grefen, P.W.P.J., Vonk, J., Bauknecht, Kurt, Kumar Madria, Sanjay, and Pernul, Günther
- Subjects
Service (systems architecture) ,Process management ,business.industry ,Computer science ,Information technology ,METIS-119624 ,Document management system ,computer.software_genre ,Workflow engine ,XPDL ,Outsourcing ,Workflow technology ,Workflow specification ,IR-19101 ,Workflow ,EWI-10561 ,business ,SCS-Services ,computer ,Workflow management system ,Simulation - Abstract
Nowadays, many organizations form dynamic partnerships to deal effectively with market requirements. As companies use automated workflow management systems (WFMSs) to control their processes, a way of linking workflow processes in different organizations is required for turning the cooperating companies into a seamless operating virtual enterprise. The CrossFlow Esprit project aims at developing information technology for advanced workflow support in dynamic virtual organizations with contract based service trading. Contracts are necessary for flexible service outsourcing. This paper presents contracts as the basis for finding suitable partners, connecting WFMSs of different kinds, controlling outsourced workflow, and sharing an abstraction of the workflow specification between partners. CrossFlow contracts define the data, process, and conditions relevant to the cooperation and the outsourced workflow process on an abstract level. This information can be fed through an interface to the WFMSs of partners in a virtual enterprise to automate the co-operation between the partners completely.
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- 2000
- Full Text
- View/download PDF
342. Carbon isotopes and lipid biomarker investigation of sources, transport and degradation of terrestrial organic matter in the Buor-Khaya Bay, SE Laptev Sea
- Author
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Karlsson, Emma, Charkin, A., Dudarev, O., Semiletov, I., Vonk, J. E., Sanchez-Garcia, L., Andersson, August, Gustafsson, Örjan, Karlsson, Emma, Charkin, A., Dudarev, O., Semiletov, I., Vonk, J. E., Sanchez-Garcia, L., Andersson, August, and Gustafsson, Örjan
- Abstract
The world's largest continental shelf, the East Siberian Shelf Sea, receives substantial input of terrestrial organic carbon (terr-OC) from both large rivers and erosion of its coastline. Degradation of organic matter from thawing permafrost in the Arctic is likely to increase, potentially creating a positive feedback mechanism to climate warming. This study focuses on the Buor-Khaya Bay (SE Laptev Sea), an area with strong terr-OC input from both coastal erosion and the Lena river. To better understand the fate of this terr-OC, molecular (acyl lipid biomarkers) and isotopic tools (stable carbon and radiocarbon isotopes) have been applied to both particulate organic carbon (POC) in surface water and sedimentary organic carbon (SOC) collected from the underlying surface sediments. Clear gradients in both extent of degradation and differences in source contributions were observed both between surface water POC and surface sediment SOC as well as over the 100 s km investigation scale (about 20 stations). Depleted delta(13)C-OC and high HMW/LMW n-alkane ratios signaled that terr-OC was dominating over marine/planktonic sources. Despite a shallow water column (10-40 m), the isotopic shift between SOC and POC varied systematically from +2 to +5 per mil for delta(13)C and from +300 to +450 for Delta(14)C from the Lena prodelta to the Buor-Khaya Cape. At the same time, the ratio of HMW n-alkanoic acids to HMW n-alkanes as well as HMW n-alkane CPI, both indicative of degradation, were 5-6 times greater in SOC than in POC. This suggests that terr-OC was substantially older yet less degraded in the surface sediment than in the surface waters. This unusual vertical degradation trend was only recently found also for the central East Siberian Sea. Numerical modeling (Monte Carlo simulations) with delta(13)C and Delta(14)C in both POC and SOC was applied to deduce the relative contribution of - plankton OC, surface soil layer OC and yedoma/mineral soil OC. This three end-member du, authorCount :8
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- 2011
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343. Widespread release of old carbon across the Siberian Arctic echoed by its large rivers
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Gustafsson, Örjan, van Dongen, B. E., Vonk, J. E., Dudarev, O. V., Semiletov, I. P., Gustafsson, Örjan, van Dongen, B. E., Vonk, J. E., Dudarev, O. V., and Semiletov, I. P.
- Abstract
Over decadal-centennial timescales, only a few mechanisms in the carbon-climate system could cause a massive net redistribution of carbon from land and ocean systems to the atmosphere in response to climate warming. The largest such climate-vulnerable carbon pool is the old organic carbon (OC) stored in Arctic permafrost (perennially frozen) soils. Climate warming, both predicted and now observed to be the strongest globally in the Eurasian Arctic and Alaska, causes thaw-release of old permafrost carbon from local tundra sites. However, a central challenge for the assessment of the general vulnerability of this old OC pool is to deduce any signal integrating its release over larger scales. Here we examine radiocarbon measurements of molecular soil markers exported by the five Great Russian-Arctic Rivers (Ob, Yenisey, Lena, Indigirka and Kolyma), employed as natural integrators of carbon release processes in their watersheds. The signals held in estuarine surface sediments revealed that average radiocarbon ages of n-alkanes increased east-to-west from 6400 yr BP in Kolyma to 11 400 yr BP in Ob. This is consistent with westwards trends of both warmer climate and more degraded organic matter as indicated by the ratio of high molecular weight (HMW) n-alkanoic acids to HMW n-alkanes. The dynamics of Siberian permafrost can thus be probed via the molecular-radiocarbon signal as carried by Arctic rivers. Old permafrost carbon is at present vulnerable to mobilization over continental scales. Climate-induced changes in the radiocarbon fingerprint of released permafrost carbon will likely depend on changes in both permafrost coverage and Arctic soil hydraulics., authorCount :5
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- 2011
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344. Seasonal and interannual variability of sedimentation and organic matter distribution in the Buor-Khaya Gulf : the primary recipient of input from Lena River and coastal erosion in the southeast Laptev Sea
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Charkin, A. N., Dudarev, O. V., Semiletov, I. P., Kruhmalev, A. V., Vonk, J. E., Sanchez-Garcia, L., Karlsson, Emma, Gustafsson, Örjan, Charkin, A. N., Dudarev, O. V., Semiletov, I. P., Kruhmalev, A. V., Vonk, J. E., Sanchez-Garcia, L., Karlsson, Emma, and Gustafsson, Örjan
- Abstract
Climate warming is amplified in the land-sea system of the East Siberian Arctic, which also holds large pools of vulnerable carbon in permafrost. This coastal area is strongly influenced by sediment and carbon transport from both its large rivers and extensive erosion of Pleistocene permafrost along its coastline. This study is investigating the coastal fate of the sediment and organic carbon delivered to the Buor-Khaya Gulf, which is the first recipient of the overwhelming fluvial discharge from the Lena River and is additionally receiving large input from extensive erosion of the coastal ice-complex (permafrost a. k.a. Yedoma; loess soil with high organic carbon content). Both water column suspended particulate matter (SPM) and surface sediments were sampled at about 250 oceanographic stations in the Gulf in this multi-year effort, including one winter campaign, and analyzed for the distribution and sorting of sediment size, organic carbon content, and stable carbon isotope signals. The composition of the surface sediment suggests an overwhelmingly terrestrial contribution from both river and coastal erosion. The objective of this paper is to improve our understanding of the seasonal (i.e., winter vs summer) and interannual variability of these coastal sedimentation processes and the dynamics of organic carbon (OC) distribution in both the water column SPM and the surface sediments of the Buor-Khaya Gulf. Based on data collected during several years in the period 2000-2008, two different sedimentation regimes were revealed for the Buor-Khaya Gulf, the relative importance of each at a given time depend on hydrometeorological conditions, the Lena River water discharge and sea-ice regime: Type 1 erosion-accumulation and Type 2 accumulation. The Type 1 erosion-accumulation sedimentation regime is typical (2000-2006) for the ice-free period of the year (here considered in detail for August 2005). Under such conditions terrigenous sources of SPM and particulate organic, authorCount :8
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- 2011
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345. Vergelijkbaarheid van referentie-meetapparatuur en filtertypes voor fijnstof (PM10)
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CMM, mev, Vonk J, Hafkenscheid ThL, Mooibroek D, CMM, mev, Vonk J, Hafkenscheid ThL, and Mooibroek D
- Abstract
RIVM rapport:Om de bruikbaarheid van referentie-apparatuur voor kalibratie en controle van automatische meetsystemen voor fijnstof (PM10) in het Landelijk Meetnet Luchtkwaliteit (LML) vast te stellen is in 2006 onderzoek verricht naar onderlinge vergelijkbaarheid van een aantal referentie-instrumenten. Tevens is hierbij een aantal filtertypes getest op bruikbaarheid. Reden hiervoor is dat het tot dan toe voor referentie-metingen gebruikte type Schleicher & Schuell QF20 uit productie zou worden genomen. Onderlinge verschillen tussen referentie-instrumenten bedragen 0 tot 15%; de tussen-instrument spreiding bedraagt 1,63 µg/m3 (7,5%) bij een gemiddelde concentratie van 21,8 µg/m3. Voor de verschillende filtertypes liggen de gemiddelde waarden tussen 20 en 23 µg/m3, hetgeen overeenkomt met een spreiding van ca. 14%. De verschillen in meetwaarden kunnen niet worden verklaard door verschillen in debieten van de verschillende referentie-instrumenten maar deels wel door onderlinge hindering in de vrije aanzuiging van de instrumenten. Desondanks voldoet de tussen-instrument spreiding aan de Europese eis van =2 µg/m3. Evaluatie van de resultaten voor de 4 filtertypes geven aan dat Whatman QMA de meest geschikte vervanger is voor het uit productie genomen Schleicher & Schuell QF20., To assess the suitability of reference measurement devices for calibration and checking of automated measurement systems for particulate matter (PM10) in the National Air Quality Monitoring Network (NAQMN), in 2006 research has been conducted into between instrument comparability. In addition a number of filter types has been tested for suitability. Reason for this is the future unavailability of the type that has hitherto been used (Schleicher & Schuell QF20). Eight reference instruments have been equipped with the filter types Schleicher & Schuell QF20, Whatman QMA, Pall 'Pallflex' and Machery & Nagel MN QF1 according to a fixed schedule so as to obtain four pairs of instruments for between instrument comparison, and to have filters sampled in duplicate by differing instruments. Differences between instruments amount from 0 to 15% with a between instrument variation of 1,63 µg/m3 (7,5%) at a mean concentration of 21,8 µg/m3. The mean concentrations for the different filter types range from 20 to 23 µg/m3 (ca. 14%). Evaluation with ANOVA shows that the factors "instrument", "filter", "day of measurement". together with the interaction "filter - day of measurement" are significant; after removing the factor "day of measurement" a variation of about ± 5% around the mean between instruments results. The results for the filter types QF20 and QMA are not significantly different, but are significantly higher than those for Pallflex and MN QF1. Flow variations between instruments have been detected, but correcting for these does not explain the differences in measurement results. Obstruction of the free flow towards instrument sampling inlets partly explains the differences. Nevertheless the between instrument variation still meets the European requirement of =2 µg/m3. Results for the filter types show that Whatman QMA is the most suitable replacement for Schleicher & Schuell QF20 which is no longer in production.
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- 2011
346. Greenhouse Gas Emissions in the Netherlands 1990-2009 : National Inventory Report 2011
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CMM, mev, van der Maas CWM, Coenen PWHG, Zijlema PJ, Baas K, van den Berghe G, te Biesebeek JD, Brandt AT, Geilenkirchen G, van der Hoek KW, te Molder R, Droge R, Peek CJ, Vonk J, van de Wyngaert I, CMM, mev, van der Maas CWM, Coenen PWHG, Zijlema PJ, Baas K, van den Berghe G, te Biesebeek JD, Brandt AT, Geilenkirchen G, van der Hoek KW, te Molder R, Droge R, Peek CJ, Vonk J, and van de Wyngaert I
- Abstract
RIVM rapport:In 2009 is de totale broeikasgasemissie van Nederland met ongeveer 3 procent gedaald ten opzichte van de emissie in 2008. Deze daling komt vooral door een lagere industriële productie als gevolg van de economische crisis. De totale broeikasgasemissie in 2009 bedraagt 198,9 Teragram (Megaton of miljard kilogram) CO2-equivalenten. Ten opzichte van het basisjaar 1990 (213,2 Tg CO2- equivalenten) is dit een afname van bijna 7 procent. Beide getallen zijn exclusief de emissies afkomstig uit het soort landgebruik en de verandering daarin, zoals natuurontwikkeling of ontbossing. (land use, land use change and forestry, LULUCF). Dit blijkt uit een inventarisatie van broeikasgasemissies die het RIVM op verzoek van het ministerie van Infrastructuur en Milieu (I&M) heeft opgesteld. Met deze inventarisatie voldoet Nederland aan de nationale rapportageverplichtingen voor 2011 van het Klimaatverdrag van de Verenigde Naties (UNFCCC), van het Kyoto Protocol en van het Bewakingsmechanisme Broeikasgassen van de Europese Unie. De inventarisatie bevat verder trendanalyses voor de emissies van broeikasgassen in de periode 1990-2009, een analyse van belangrijkste emissiebronnen (sleutelbronnen) evenals de onzekerheid in hun emissies. Daarnaast biedt de inventarisatie documentatie van de gebruikte berekeningsmethoden, databronnen en toegepaste emissiefactoren. Ten slotte bevat het een overzicht van het kwaliteitssysteem en de validatie van de emissiecijfers door de Nederlandse Emissieregistratie., The total greenhouse gas emission from the Netherlands in 2009 decreased by approximately 3% compared to the emission in 2008. This decrease is a result of the economic crisis, especially due to the decrease in the industrial production. In 2009, total direct greenhouse gas emissions (excluding emissions from LULUCF - land use, land use change and forestry) in the Netherlands amount to 198.9Tg CO2 eq. This is nearly 7 % below the emissions in the base year 1990 (213.2 Tg CO2 eq). This report documents the 2011 Netherlands' annual submission of its greenhouse gas emission inventory in accordance with the guidelines provided by the United Nations Framework Convention on Climate Change (UNFCCC), the Kyoto Protocol and the European Union's Greenhouse Gas Monitoring Mechanism. The report comprises explanations of observed trends in emissions; a description of an assessment of key sources and their uncertainty; documentation of methods, data sources and emission factors applied; and a description of the quality assurance system and the verification activities performed on the data.
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- 2011
347. Emissions of transboundary air pollutants in the Netherlands 1990-2009 : Informative Inventory Report 2011
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CMM, mev, Jimmink BA, Coenen PWHG, Droge R, Geilenkirchen GP, Leekstra AJ, van der Maas CWM, Peek CJ, Vonk J, Wever D, CMM, mev, Jimmink BA, Coenen PWHG, Droge R, Geilenkirchen GP, Leekstra AJ, van der Maas CWM, Peek CJ, Vonk J, and Wever D
- Abstract
RIVM rapport:Tussen 1990 en 2009 is in Nederland de uitstoot van luchtverontreinigende stoffen gedaald. Het betreft zwaveldioxide, stikstofoxiden, niet-methaan vluchtige organische stoffen (NMVOS), koolmonoxide, ammoniak, zware metalen en persistente organische vervuilende stoffen (POP's). Deze neerwaartse trend is vooral toe te schrijven aan schonere brandstoffen en auto's, en aan emissiebeperkende maatregelen voor industriële sectoren. Dit blijkt uit de toelichting van het RIVM op de Nederlandse emissiecijfers van grootschalige luchtverontreinigende stoffen, het Informative Inventory Report (IIR) 2011. Deze cijfers worden jaarlijks - onder regie van het RIVM - door het Emissieregistratieteam aan de overheid geleverd vanwege verplichtingen voor de Verenigde Naties (UNECE) en de Europese Commissie. De emissiecijfers zijn data van een reeks jaren, vanaf 1990 tot de meest recent aangeleverde gegevens. Dit keer is de ammoniakemissiereeks met een nieuw model berekend, waarmee beter in kaart is gebracht wat maatregelen om deze emissie te verminderen opleveren. Hieruit blijkt dat in 1990 meer ammoniak is uitgestoten ten opzichte van de vorige reeks en na 1991 minder. Voor 2008 scheelt dat 7,6 kiloton ammoniak. Deze daling komt vooral doordat het vanaf 1991 verplicht is de mest niet over het land te verspreiden, maar in de bodem te injecteren (onderwerken). Hierdoor komt minder ammoniak in de lucht terecht. Verder zijn nieuwe bronnen van stikstofoxiden onderscheiden en zijn methoden ontwikkeld om deze emissies te berekenen. Het gaat om emissies uit mest van landbouwbodems en uit mest in opslagsilo's. Uit de berekeningen blijkt dat voor het jaar 2009 zo'n 25,5 kiloton stikstofoxiden afkomstig is van landbouwbodems. Dit is circa tien procent van de maximaal toegestane hoeveelheid uitgestoten stikstof-oxiden in Nederland, het zogenoemde NEC-plafond (National Emission Ceiling). Deze hoeveelheid telt echter niet mee in de berekening voor dit plafond (en staan vermeld onder memo-item 'natuur, Emissions of air pollutants in the Netherlands decreased between 1990 and 2009. This concerns sulfur dioxide, nitrogen oxides, non-methane volatile organic compounds (NMVOC), carbon monoxide, ammonia, heavy metals and persistent organic pollutants (POP's). The downward trend may be attributed in particular to cleaner fuels, cleaner car engines and to emission reductions in the industrial sectors. This has become apparent in the RIVM's explanation of the emission data submission, the Informative Inventory Report (IIR) 2011. Every year the Emission Inventory team - under direction of the RIVM - submits emission data to the government, for it to meet its obligations to the United Nations Economic Commission for Europe (UNECE) and the European Commission. The emission data set consists of data on a series of years, from 1990 up to the most recently submitted data. For this submission, the ammonia emission data series was calculated using a new model, which includes improved emission reduction measures, more in line with actual measurements. Results of the new model give rise to considerably higher NH3 emissions in the base year 1990. After 1991 they turned out to be lower. For the year 2008 the difference was 7.6 Gg. The reduction is mostly due to the change in manure application method (i.e. incorporation in the soil instead of surface spreading). Consequently less ammonia is volatilized. Furthermore, new sources of nitrogen oxides were distinguished and methods were developed to calculate their emissions. These emissions come from manure on agricultural soils and from manure storage. Emissions from agricultural soils for the year 2009 are calculated to amount to 25.5 Gg NOx. This is about 10% of the maximum allowed emissions of NOx in the Netherlands, the 'NECceiling' (National Emission Ceiling). The amount is, however, not included for compliance to this ceiling (they are reported under memo-item 11C 'Natural emissions' in the submission). This is because, the method
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- 2011
348. Contracts for Cross-Organizational Workflow Management
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Koetsier, M.J., Grefen, P.W.P.J., and Vonk, J.
- Subjects
EWI-5960 ,METIS-118689 ,IR-63136 ,SCS-Services - Abstract
Nowadays, many organizations form dynamic partnerships to deal effectively with market requirements. As companies use automated workflow systems to control their processes, a way of linking workflow processes in different organizations is useful in turning the co-operating companies into a seamless operating virtual enterprise. The CrossFlow Esprit project aims at developing information technology for advanced process support in dynamic virtual organizations with contract based service trading. Contracts are necessary for flexible service outsourcing. This report presents contracts as a way of finding suitable partners, connect WFMSs of different kinds, control outsourced workflow, and share an abstraction of the workflow specification between the partners. The contract defines the data, process, and conditions relevant to the co-operation and the outsourced workflow on an abstract level. This information can be fed through an interface to the WFMSs on both sides of the outsourcing in order to automate fully the co-operation between the partners.
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- 1999
349. CrossFlow: Cross-Organizational Workflow Management in Virtual Organizations
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Grefen, P.W.P.J., Koetsier, M.J., and Vonk, J.
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METIS-123861 - Published
- 1999
350. Contract Model
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Koetsier, M.J., Grefen, P.W.P.J., and Vonk, J.
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METIS-122186 - Published
- 1999
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