25 research outputs found
Synthese van ureum uit ammoniak en kooldioxyde volgens het chemicoproces
No full textDocument(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
Spanningsregeling van electrische machines door ontladingsbuizen
No full textElectrical Engineering, Mathematics and Computer Scienc
Pumpstation 1853
No full textPumpstation 1853 at Heemstede Leiduin has lost its relation to its source. This drinking water museum needs an intervention which will revive the building and its surrounding, using water as a connecting element.studio the old lineRMITArchitectur
Global estimates and projections of mortality by cause, 1970-2015
No full textThe authors report estimates and projections of deaths by cause for major world regions, based on data from country reports to the World Health Organization and regression models. They report mortality rates for seven major causes: infectious and parasitic diseases, neoplasms, circulatory system diseases, complications of pregnancy, certain perinatal conditions, injury and poisoning, and other causes. Some more specific causes are reported on. They give estimates for six age groups by sex for four years (1970, 1985, 2000, and 2015) and six country groups: industrial market economies, industrial nonmarket economies, Latin America and the Caribbean, sub-Saharan Africa, the Middle East and North Africa, and Asia and the Pacific. Among their findings: The population over 45 in developing countries is projected to more than double between 1985 and 2015, rising from 17 to 24 percent of the population. Causes of death, which are closely related to age at death, must change accordingly. Infant mortality in developing countries is projected to fall from 78 per thousand in 1985 to 43 per thousand in 2015 and life expectancy at birth in developing countries is projected to rise by five years. The leading causes of death for the world as a whole for both 1970 and 1985 were infectious and parasitic diseases and circulatory system diseases - with the first more important in developing countries, and the second more important in developed countries. Certain perinatal conditions were also more important for developing countries, but accounted for only a fourth or a fifth as many deaths in 1985. Neoplasms were more important in developed than in developing countries. Deaths from infectious diseases are expected to decline as a percentage of deaths; proportionate deaths from diseases of the circulatory system are expected to rise. The greatest number of deaths will continue to be in Asia, where almost half of all deaths in the world take place. This proportion is not projected to change. Better data on causes of death are essential. The World Health Organization is working with countries to strengthen their cause-of-death information systems as an essential support for health monitoring.Health Monitoring&Evaluation,Health Indicators,Early Child and Children's Health,Adolescent Health,Demographics
Discourse Segment Type vs. Linguistic Features
No full text1. Ten full-text papers in biology were annotated, see 170220_deWaard_Corpus for full references. The papers were selected according to three criteria:
1.1. Papers related to the Voorhoeve paper (Voorhoeve). (*)
1.2. Papers regarding neuropharmacology (Neuro). (**)
1.3. Papers from the Genia corpus (Genia). (***)
2. The papers were obtained by downloading the html and converted into text and then copied into an Excel spreadsheet.
3. Each paper was annotated as follows:
3.1. The first letter of the first author name was added (column 1)
3.2. The papers were (manually) split into discourse segments, as described in [2]
3.3. The section names were added;
3.4. Segment types were identified, according to the categories defined in [2];
3.5. Verb tense/modality/voice was annotated, according to the categories defined in [2];
3.6. Verb class was added from a taxonomy described in [3];
3.7. Modality features were added according to categories described in [4];
4. The final results with the text enclosed can be found in the file 170220_deWaard_DST_With_Text
5. The final results with only numerical results, for ease of statistical processing, can be found in the files 170220_deWaard_DST_Codes
6. The CodeBook describing the map of the numerical results to the values can be found in the file 170220_deWaard_Value_Labels
[2] de Waard, A. and Pander Maat, H. (2009). Categorizing Epistemic Segment Types in Biology Research Articles. In Proceedings of the Workshop on Linguistic and Psycholinguistic Approaches to Text Structuring (LPTS 2009)
[3] de Waard , Anita & Pander Maat, Henk. (2010). A classification of research verbs to facilitate discourse segment identification in biological texts. Proceedings from The Interdisciplinary Workshop on Verbs. The identification and representation of verb features. Pisa, Italy
[4] de Waard, A. and Pander Maat, H. (2012). Knowledge Attribution in Scientific Discourse: A Taxonomy of Types and Overview of Features, In Proceedings of the Workshop on Detecting Structure in Scholarly Discourse (DSDD), ACL 201
Self-organizing distributed workflow management
No full textThe proliferation of service-oriented architectures in the last decade has brought forward an important class of sophisticated distributed applications that are founded on
the idea of composing multiple simple services into a complex, coherent whole. Such applications spanning multiple service invocations can be most effectively realized by means of workflows. When it comes to high performance workflow execution, distribution (outscaling) of services is a key concept and also a very straightforward advantage of the workflow paradigm. Concretely, both the constituent services of the workflow and the system that manages their invocations have to be distributed across an environment of computational devices. In a wide spectrum of applications, that entail heterogeneity of the encompassed computational devices, e.g., modern emergency management, invocations of optimal service instances in conjunction to their reliability are
fundamental prerequisites of distributed workflow management.
At the center of this thesis is a formal model that defines the distributed (i.e., scalable) execution of workflows. To extend this model for reliability in a novel way, which
does not affect the scalability of execution, the Safety-Ring system service is presented.
The idea behind Safety-Ring is to offer recovery for a wide range of node failures, which
host active services of running workflows. To this end, the Safety-Ring provides a scalable, reliable, and consistent data store that is used for the storage of workflow execution state. The novel failure-recovery mechanism features effective reliability such that can
be applied on the nodes that host the Safety-Ring service themselves, thus we say the Safety-Ring is self-healing.
To apply the reliable (and distributed) execution model, enhanced by Safety-Ring, to heterogeneous node environments, that are predominantly composed of mobile de-
vices, this thesis presents the Compass data access protocol. In providing scalable data lookup for its maintained data, the Safety-Ring assumes network runtime characteristics which are rather stable, and thus Safety-Ring implicitly optimizes for the number of
queried nodes. Especially in mobile applications, where node network connectivity dynamically changes, data access protocols should aim at reducing the overall data lookup
latency, rather than the number of queried nodes. Compass introduces latency optimal paths to each node, which dynamically adapt to changing network characteristics. The
scalable data lookup of Safety-Ring is not affected.
In case distributed execution of workflows spans services of continuous (stateful) type, their reliability is decoupled from the Safety-Ring. Since such service types are
predominantly featured by devices of limited resources, novel approaches to resource conservative recovery of failures for continuous services have to be provided. This thesis builds on proven recovery techniques, such as passive-standby, so as to enhance them for redundancy of the continuous state and thus improve the overall reliability of the system. In doing so the redundancy of state is enforced by means of a lightweight, in terms of network overhead, consistency protocol which allows for its application in resource limited node environments.
In order to improve the execution performance of distributed workflows, in terms of throughput, this thesis offers a novel concept to services distribution. At the heart of our approach lie decentralized controllers that autonomously perform dynamic reconfiguration of the execution environment in terms of available services. This primarily affects the Safety-Ring service and all application services. Thereby, the goals of the controllers
are to prevent workflow execution bottlenecks and unnecessary service deployments that waste resources. Since the controllers are equipped at any node in the system and
can affect any other node of the system we say that the distributed workflow execution model is self-optimizing.
Finally, all the presented concepts are implemented within the context of the OSIRIS distributed workflow engine and quantitatively evaluated in a series of experiments.
The results of experiments confirm the benefits of our concepts for the distributed workflow execution model
MicroRNA-31 controls G protein alpha-13 (GNA13) expression and cell invasion in breast cancer cells
No full text
