166 research outputs found

    Lämpötilan valvonta- ja hallintajärjestelmä

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    Työn tarkoitus on rakentaa ohjelmisto digitemp-mittareiden hallintaan ja lämpötilojen valvontaan. Satakunnan ammattikorkeakoululla on käytössä lämpömittareita palvelintiloissa lämpötilojen tarkkailua varten. Tällä hetkellä jokainen mittaritietokone on erillään toisistaan ja hälytysjärjestelmä on jokseenkin alkeellinen sekä hankala hallita. Ohjelmisto koostuu kolmesta osasta. Asiakasohjelmasta mittarin päähän, palvelinohjelmasta palvelimelle sekä nettikäyttöliittymästä. Ohjelma toimii siten, että mittarikone lähettää tietoa palvelimelle, joka tallennetaan tietokantaan ja sitä hallitaan ja luetaan web:n kautta. Järjestelmä vaatii käyttäjätunnuksen, johon liitetään puhelinnumero sekä sähköposti. Kun lämpötila nousee yli sallitun rajan aiheutuu hälytys, jolloin lähtee sähköposti ja tekstiviesti mittariin liitetyille henkilöille. Web-käyttöliittymästä voi hallita käyttäjiä sekä katsoa graafista historiaa lämpötiloista.The purpose of this work was to build an application to manage Digitemp probes and to monitor temperatures. Satakunta University of Applied Sciences uses Digitemp probes to monitor temperatures in server rooms. Currently each computer is apart from each other and the alarm system is somewhat rudimentary and also hard to manage. The application consists of three parts. These are a client program to probe computers, a server program for the server and a web interface. The client will send data to the server which saves it into the database. The data is then viewed and controlled through the web interface. The system requires users. Every user has an e-mail address and a phone number. When the temperature of a probe rises above the allowed limits, the system sends an alarm through e-mail and an SMS to users linked with the probe. The web interface is used to manage users and view the temperature data

    Homological tree-based strategies for image analysis

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    Homological characteristics of digital objects can be obtained in a straightforward manner computing an algebraic map φ over a finite cell complex K (with coefficients in the finite field F2={0,1}) which represents the digital object [9]. Computable homological information includes the Euler characteristic, homology generators and representative cycles, higher (co)homology operations, etc. This algebraic map φ is described in combinatorial terms using a mixed three-level forest. Different strategies changing only two parameters of this algorithm for computing φ are presented. Each one of those strategies gives rise to different maps, although all of them provides the same homological information for K. For example, tree-based structures useful in image analysis like topological skeletons and pyramids can be obtained as subgraphs of this forest

    Connectivity forests for homological analysis of digital volumes

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    In this paper, we provide a graph-based representation of the homology (information related to the different “holes” the object has) of a binary digital volume. We analyze the digital volume AT-model representation [8] from this point of view and the cellular version of the AT-model [5] is precisely described here as three forests (connectivity forests), from which, for instance, we can straightforwardly determine representative curves of “tunnels” and “holes”, classify cycles in the complex, computing higher (co)homology operations,... Depending of the order in which we gradually construct these trees, tools so important in Computer Vision and Digital Image Processing as Reeb graphs and topological skeletons appear as results of pruning these graphs

    EFSA NDA Panel (EFSA Panel on Dietetic Products, Nutrition and Allergies), 2013 . Scientific opinion on Dietary Reference Values for fluoride

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    Following a request from the European Commission, the Panel on Dietetic Products, Nutrition and Allergies (NDA) derived Dietary Reference Values (DRVs) for fluoride, which are provided as Adequate Intake (AI) from all sources, including non-dietary sources. Fluoride is not an essential nutrient. Therefore, no Average Requirement for the performance of essential physiological functions can be defined. Nevertheless, the Panel considered that the setting of an AI is appropriate because of the beneficial effects of dietary fluoride on prevention of dental caries. The AI is based on epidemiological studies (performed before the 1970s) showing an inverse relationship between the fluoride concentration of water and caries prevalence. As the basis for defining the AI, estimates of mean fluoride intakes of children via diet and drinking water with fluoride concentrations at which the caries preventive effect approached its maximum whilst the risk of dental fluorosis approached its minimum were chosen. Except for one confirmatory longitudinal study in US children, more recent studies were not taken into account as they did not provide information on total dietary fluoride intake, were potentially confounded by the use of fluoride-containing dental hygiene products, and did not permit a conclusion to be drawn on a dose-response relationship between fluoride intake and caries risk. The AI of fluoride from all sources (including non-dietary sources) is 0.05 mg/kg body weight per day for both children and adults, including pregnant and lactating women. For pregnant and lactating women, the AI is based on the body weight before pregnancy and lactation. Reliable and representative data on the total fluoride intake of the European population are not available

    Dimensional reduction of electromagnetic boundary value problems

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    Genetic variation in Wnt/β-catenin and ER signalling pathways in female and male elite dancers and its associations with low bone mineral density: a cross-section and longitudinal study.

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    The association of genetic polymorphisms with low bone mineral density in elite athletes have not been considered previously. The present study found that bone mass phenotypes in elite and pre-elite dancers are related to genetic variants at the Wnt/β-catenin and ER pathways. Some athletes (e.g. gymnasts, dancers, swimmers) are at increased risk for low bone mineral density (BMD) which, if untreated, can lead to osteoporosis. To investigate the association of genetic polymorphisms in the oestrogen receptor (ER) and the Wnt/β-catenin signalling pathways with low BMD in elite and pre-elite dancers (impact sport athletes). The study included three phases: (1) 151 elite and pre-elite dancers were screened for the presence of low BMD and traditional osteoporosis risk factors (low body weight, menstrual disturbances, low energy availability); (2) a genetic association study was conducted in 151 elite and pre-elite dancers and age- and sex- controls; (3) serum sclerostin was measured in 101 pre-elite dancers and age- and sex-matched controls within a 3-year period. Eighty dancers revealed low BMD: 56.3% had at least one traditional osteoporosis risk factor, whereas 28.6% did not display any risk factor (37.2% revealed traditional osteoporosis risk factors, but had normal BMD). Body weight, menstrual disturbances and energy availability did not fully predict bone mass acquisition. Instead, genetic polymorphisms in the ER and Wnt/β-catenin pathways were found to be risk factors for low BMD in elite dancers. Sclerostin was significantly increased in dancers compared to controls during the 3-year follow-up (p < 0.05)

    Opettajien käsitykset monikielisyydestä : heijastumia koulun kielipolitiikasta

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    This article examines teachers’ views (N = 2,864) on school multilingualism. The results have been analyzed using statistical methods and the conceptual frameworks of Spolsky’s language policy and Ruíz’s language orientations. The respondents were divided into three groups: positive (18%), deliberating (34%) and cautious (48%). The teachers’ language orientations were analyzed using three sum variables: teacher’s use of multiple languages, student’s use of multiple languages, and schools’ language attitudes. Classroom teachers were more positive about multilingualism than subject teachers and there were more teachers with cautious attitudes in schools where the number of foreign-language pupils was less than 5%. Additionally, the attitudes to multilingualism were more permissive in Swedish-speaking than in Finnish-speaking schools. Overall, the analysis of teachers’ views suggested that language policies vary. Finally, the individual respondents’ views did not fully correspond to any of Ruíz’s formulated language orientations.Peer reviewe

    Chromosome 8q24 markers: Risk of early-onset and familial prostate cancer

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    Recent admixture mapping and linkage/association studies have implicated an ∼1 Mb region on chromosome 8q24 in prostate cancer susceptibility. In a subsequent follow-up investigation, Haiman et al. (Nat Genet 2007;39:638-44) observed significant, independent associations between 7 markers within this region and sporadic prostate cancer risk in a multi-ethnic sample. To clarify the risk associated with hereditary prostate cancer, we tested for prostate cancer association with 6 of these 7 markers in a sample of 1,015 non-Hispanic white men with and without prostate cancer from 403 familial and early-onset prostate cancer families. Single nucleotide polymorphisms (SNPs) rs6983561 and rs6983267 showed the strongest evidence of prostate cancer association. Using a family-based association test, the minor (“C”) allele of rs6983561 and the major (“G”) allele of rs6983267 were preferentially transmitted to affected men ( p < 0.05), with estimated odds ratios (ORs) of 2.26 (95% confidence interval of 1.06–4.83) and 1.30 (95% confidence interval of 0.99–1.71), respectively, for an additive model. Notably, rs6983561 was significantly associated with prostate cancer among men diagnosed at an early (<50 years) but not later age ( p = 0.03 versus p = 0.21). Similarly, the association with rs6983267 was (not) statistically significant among men with(out) clinically aggressive disease ( p = 0.007 versus p = 0.34). Our results confirm the association of prostate cancer with several of the SNPs on chromosome 8q24 initially reported by Haiman et al. In addition, our results suggest that the increased risk associated with these SNPs is approximately doubled in individuals predisposed to develop early onset or clinically aggressive disease. © 2008 Wiley-Liss, Inc.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/58546/1/23471_ftp.pd

    Parametric Models in Quasi-Static Electromagnetics

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