853 resultados para Weinberg, Steven: Unelmia viimeisestä teoriasta


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Over the past two decades, electrophysiology has undergone unprecedented changes thanks to technical improvements, which simplify measurement and analysis and allow more compact data storage. This book covers in detail the spectrum of electrophysiology applications in patients with disorders of consciousness. Its content spans from clinical aspects of the management of subjects in the intensive care unit, including EEG, evoked potentials and related implications in terms of prognosis and patient management to research applications in subjects with ongoing consciousness impairment. While the first section provides up-to-date information for the interested clinician, the second part highlights the latest developments in this exciting field. The book comprehensively combines clinical and research information related to neurophysiology in disorder-of- consciousness patients, making it an easily accessible reference for neuro-ICU specialists, epileptologists and clinical neurophysiologists as well as researchers utilizing EEG and event-related potentials.

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Artikkeli perustuu kirjoittajan väitöskirjaan Hoitamisen olemus : hoitotyön historiasta, teoriasta ja tulkinnasta hoitamista kuvaaviin teoreettisiin väittämiin (Oulun yliopisto 2006)

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Thirty two microsatellites were optimized from 454 pyrosequencing libraries for three Atlanto-Mediterranean echinoderms: Coscinasterias tenuispina, Echinaster sepositus and Arbacia lixula. We observed different frequency of microsatellite types (di-, tri-, tetra- and pentanucleotide) throughout the genome of the species, but no significant differences were observed in allele richness among different microsatellite repeats. No loci showed linkage disequilibrium. Heterozygosity deficit and departure from Hardy Weinberg equilibrium were observed for some loci, in two species, probably due to high levels of inbreeding. Heterozygosity excess observed in C. tenuispina could be explained by selection against homozygotes and/or outcrossing.

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Kirjallisuutta

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Identification of CD8+ cytotoxic T lymphocyte (CTL) epitopes has traditionally relied upon testing of overlapping peptide libraries for their reactivity with T cells in vitro. Here, we pursued deep ligand sequencing (DLS) as an alternative method of directly identifying those ligands that are epitopes presented to CTLs by the class I human leukocyte antigens (HLA) of infected cells. Soluble class I HLA-A*11:01 (sHLA) was gathered from HIV-1 NL4-3-infected human CD4+ SUP-T1 cells. HLA-A*11:01 harvested from infected cells was immunoaffinity purified and acid boiled to release heavy and light chains from peptide ligands that were then recovered by size-exclusion filtration. The ligands were first fractionated by high-pH high-pressure liquid chromatography and then subjected to separation by nano-liquid chromatography (nano-LC)–mass spectrometry (MS) at low pH. Approximately 10 million ions were selected for sequencing by tandem mass spectrometry (MS/MS). HLA-A*11:01 ligand sequences were determined with PEAKS software and confirmed by comparison to spectra generated from synthetic peptides. DLS identified 42 viral ligands presented by HLA-A*11:01, and 37 of these were previously undetected. These data demonstrate that (i) HIV-1 Gag and Nef are extensively sampled, (ii) ligand length variants are prevalent, particularly within Gag and Nef hot spots where ligand sequences overlap, (iii) noncanonical ligands are T cell reactive, and (iv) HIV-1 ligands are derived from de novo synthesis rather than endocytic sampling. Next-generation immunotherapies must factor these nascent HIV-1 ligand length variants and the finding that CTL-reactive epitopes may be absent during infection of CD4+ T cells into strategies designed to enhance T cell immunity.

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Internet publication will radically alter how chemists will publish their research in the next century. In this article, we describe two fundamental changes: enhanced chemical publication which allows chemists to publish materials that cannot be published on paper and end-user customization which allows readers to read articles prepared to meet their specifications. These concepts have been implemented within the Internet Journal of Chemistry, a new journal designed to employ the latest technologies for chemical publications.

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Tutkielman tavoitteena oli etsiä PK-yrittäjien reagointitapoja markkinariskiin va¬rautumiseen. Tutkielman teoriaosa jakautui kahteen osaan, jossa ensimmäisessä osassa haettiin markkinariskeille alttiita yrityksen kasvukohtia. Teorian toisessa osassa etsittiin teoriasta reagointitapoja suhteessa markkinariskeihin. Tutkimusmenetelmäksi valittiin teemahaastattelu. Tutkimusaineisto koostui Ky¬menlaakson alueen eri toimialan PK-yrittäjän haastattelusta. Haastattelun teemoina olivat korko-, valuutta- ja hyödykehintariski. Edellä mainittuja teemoja käsi¬teltiin yrityksen oston, varastoinnin ja myynnin näkökulmista. Kahdeksan yrittäjän haastattelujen lisäksi haastateltiin kolmea pankissa toimivaa asiakasvastuullista johtajaa tai neuvojaa. Asiakasvastuullisten haastattelujen tarkoituksena oli saada tutkimuksen analysointiin myös rahoittajan näkökulma. Kerätty haastatteluaineisto analysoitiin kvalitatiivisin menetelmin. Tutkielmassa havaittiin PK-yrittäjien käyttävän hyödykseen teoriamalleja eniten korkoriskin hallintaan. Valuutta- ja hyödykehintariskeihin ei tutkielman mukaan esitellyt teoriat soveltuneet vaan niihin yrittäjät pyrkivät varautumaan käytännössä muilla keinoilla.

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The purpose of the Master’s Thesis is to study the best practices to virtual project management from the project manager’ point of view. The best practices are divided according to a five-phase virtual project life cycle model. Each phase include concrete suggestions for actions. Research’s theoretical background is wide because of the broad subject matter. In the theoretical part topics such as virtual working, virtual project management challenges are examined and some concrete actions to tackle these challenges are introduced. Thesis’ approach is constructive, where a known problem is solved piece by piece after creating a pre-understanding of the topic. Existing research work is utilized when creating a model for virtual project team management. The basis of the model comes from various best practices read from literature and from the interviews conducted on experienced virtual project managers in the case organization. As a result the model combines both previous research and the organizations empirical experience. As an output of the thesis a model for virtual project team management is developed, which can be used as a guideline by the virtual project managers in their work. The model includes actions and practices what can be used to overcome the challenges of virtual project management.

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Network virtualisation is considerably gaining attentionas a solution to ossification of the Internet. However, thesuccess of network virtualisation will depend in part on how efficientlythe virtual networks utilise substrate network resources.In this paper, we propose a machine learning-based approachto virtual network resource management. We propose to modelthe substrate network as a decentralised system and introducea learning algorithm in each substrate node and substrate link,providing self-organization capabilities. We propose a multiagentlearning algorithm that carries out the substrate network resourcemanagement in a coordinated and decentralised way. The taskof these agents is to use evaluative feedback to learn an optimalpolicy so as to dynamically allocate network resources to virtualnodes and links. The agents ensure that while the virtual networkshave the resources they need at any given time, only the requiredresources are reserved for this purpose. Simulations show thatour dynamic approach significantly improves the virtual networkacceptance ratio and the maximum number of accepted virtualnetwork requests at any time while ensuring that virtual networkquality of service requirements such as packet drop rate andvirtual link delay are not affected.

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TE-keskusten toimenkuvaan ei ole kuulunut systemaattisesti selvittää hankkeen päätyttyä tuen vaikutuksia. Vaikuttavuusarviointi on ollut lähinnä hankkeen aloitusajankohdan tietojen keräämistä yrityksiltä. Ensimmäisen ohjelmakauden 1995 - 1999 yritystukien vaikuttavuutta ei ole tutkittu Etelä-Karjalassa jälkikäteisarvioinnilla. Tutkimus selvitti, mitä yhteiskunnallisia ja yrityskohtaisia vaikutuksia TE-keskuksen yritystuilla on ollut 3-5 vuoden jälkeen viimeisestä tukirahan maksatuksesta. Vaikuttavuutta mitattiin laaditulla kyselylomakkeella. Lisäksi tutkimustuloksia verrattiin TE-keskuksen etukäteisarviointituloksiin tukien vaikutuksista. Tutkimustulokset painottuvat eri vaikuttavuustekijöihin kuin TE-keskuksen tuloksissa. Kysely osoitti suurimmiksi tukien vaikutuksiksi yrityksen kilpailukyvyn muutoksen, muun rahoituksen helpomman saannin ja hankkeen nopeamman toteuttamisen. Muut merkittävimmät vaikutukset olivat yritysten tuotteiden ja palveluiden laadun sekä teknologiatason parantaminen ja tuotantomenetelmien kehittäminen. Yritystuilla on myös muita vaikutuksia, mutta ne jäävät alueella pieniksi. Vuoden 2003 lopussa yritystukea saaneista 366 yrityksestä vain 49 % oli toiminnassa olevaa ja 51 % todennäköisesti toimintansa lopettanutta. Tuilla luotiin vain 184 uutta työpaikkaa Etelä-Karjalaan. Keskimäärin syntyi yksi uusi työpaikka yritystä kohden, joka maksoi 38 200 euroa. Tehty arviointi osoittaa tukien vaikuttavuuden jäävän pienemmäksi kuin TE-keskuksen etukäteisarvioinnissa.