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Sample records for cis-element analyses point

  1. Bioinformatic identification of novel putative photoreceptor specific cis-elements

    OpenAIRE

    Knox Barry E; Qin Maochun; McIlvain Vera A; Danko Charles G; Pertsov Arkady M

    2007-01-01

    Abstract Background Cell specific gene expression is largely regulated by different combinations of transcription factors that bind cis-elements in the upstream promoter sequence. However, experimental detection of cis-elements is difficult, expensive, and time-consuming. This provides a motivation for developing bioinformatic methods to identify cis-elements that could prioritize future experimental studies. Here, we use motif discovery algorithms to predict transcription factor binding site...

  2. Bioinformatic cis-element analyses performed in Arabidopsis and rice disclose bZIP- and MYB-related binding sites as potential AuxRE-coupling elements in auxin-mediated transcription

    Directory of Open Access Journals (Sweden)

    Berendzen Kenneth W

    2012-08-01

    Full Text Available Abstract Background In higher plants, a diverse array of developmental and growth-related processes is regulated by the plant hormone auxin. Recent publications have proposed that besides the well-characterized Auxin Response Factors (ARFs that bind Auxin Response Elements (AuxREs, also members of the bZIP- and MYB-transcription factor (TF families participate in transcriptional control of auxin-regulated genes via bZIP Response Elements (ZREs or Myb Response Elements (MREs, respectively. Results Applying a novel bioinformatic algorithm, we demonstrate on a genome-wide scale that singular motifs or composite modules of AuxREs, ZREs, MREs but also of MYC2 related elements are significantly enriched in promoters of auxin-inducible genes. Despite considerable, species-specific differences in the genome structure in terms of the GC content, this enrichment is generally conserved in dicot (Arabidopsis thaliana and monocot (Oryza sativa model plants. Moreover, an enrichment of defined composite modules has been observed in selected auxin-related gene families. Consistently, a bipartite module, which encompasses a bZIP-associated G-box Related Element (GRE and an AuxRE motif, has been found to be highly enriched. Making use of transient reporter studies in protoplasts, these findings were experimentally confirmed, demonstrating that GREs functionally interact with AuxREs in regulating auxin-mediated transcription. Conclusions Using genome-wide bioinformatic analyses, evolutionary conserved motifs have been defined which potentially function as AuxRE-dependent coupling elements to establish auxin-specific expression patterns. Based on these findings, experimental approaches can be designed to broaden our understanding of combinatorial, auxin-controlled gene regulation.

  3. Bioinformatic identification of novel putative photoreceptor specific cis-elements

    Directory of Open Access Journals (Sweden)

    Knox Barry E

    2007-10-01

    Full Text Available Abstract Background Cell specific gene expression is largely regulated by different combinations of transcription factors that bind cis-elements in the upstream promoter sequence. However, experimental detection of cis-elements is difficult, expensive, and time-consuming. This provides a motivation for developing bioinformatic methods to identify cis-elements that could prioritize future experimental studies. Here, we use motif discovery algorithms to predict transcription factor binding sites involved in regulating the differences between murine rod and cone photoreceptor populations. Results To identify highly conserved motifs enriched in promoters that drive expression in either rod or cone photoreceptors, we assembled a set of murine rod-specific, cone-specific, and non-photoreceptor background promoter sequences. These sets were used as input to a newly devised motif discovery algorithm called Iterative Alignment/Modular Motif Selection (IAMMS. Using IAMMS, we predicted 34 motifs that may contribute to rod-specific (19 motifs or cone-specific (15 motifs expression patterns. Of these, 16 rod- and 12 cone-specific motifs were found in clusters near the transcription start site. New findings include the observation that cone promoters tend to contain TATA boxes, while rod promoters tend to be TATA-less (exempting Rho and Cnga1. Additionally, we identify putative sites for IL-6 effectors (in rods and RXR family members (in cones that can explain experimental data showing changes to cell-fate by activating these signaling pathways during rod/cone development. Two of the predicted motifs (NRE and ROP2 have been confirmed experimentally to be involved in cell-specific expression patterns. We provide a full database of predictions as additional data that may contain further valuable information. IAMMS predictions are compared with existing motif discovery algorithms, DME and BioProspector. We find that over 60% of IAMMS predictions are confirmed by

  4. Modeling an evolutionary conserved circadian cis-element.

    Directory of Open Access Journals (Sweden)

    Eric R Paquet

    2008-02-01

    Full Text Available Circadian oscillator networks rely on a transcriptional activator called CLOCK/CYCLE (CLK/CYC in insects and CLOCK/BMAL1 or NPAS2/BMAL1 in mammals. Identifying the targets of this heterodimeric basic-helix-loop-helix (bHLH transcription factor poses challenges and it has been difficult to decipher its specific sequence affinity beyond a canonical E-box motif, except perhaps for some flanking bases contributing weakly to the binding energy. Thus, no good computational model presently exists for predicting CLK/CYC, CLOCK/BMAL1, or NPAS2/BMAL1 targets. Here, we use a comparative genomics approach and first study the conservation properties of the best-known circadian enhancer: a 69-bp element upstream of the Drosophila melanogaster period gene. This fragment shows a signal involving the presence of two closely spaced E-box-like motifs, a configuration that we can also detect in the other four prominent CLK/CYC target genes in flies: timeless, vrille, Pdp1, and cwo. This allows for the training of a probabilistic sequence model that we test using functional genomics datasets. We find that the predicted sequences are overrepresented in promoters of genes induced in a recent study by a glucocorticoid receptor-CLK fusion protein. We then scanned the mouse genome with the fly model and found that many known CLOCK/BMAL1 targets harbor sequences matching our consensus. Moreover, the phase of predicted cyclers in liver agreed with known CLOCK/BMAL1 regulation. Taken together, we built a predictive model for CLK/CYC or CLOCK/BMAL1-bound cis-enhancers through the integration of comparative and functional genomics data. Finally, a deeper phylogenetic analysis reveals that the link between the CLOCK/BMAL1 complex and the circadian cis-element dates back to before insects and vertebrates diverged.

  5. Identification of a Positive Cis-Element Upstream of Human NKX3.1 Gene

    Institute of Scientific and Technical Information of China (English)

    An-Li JIANG; Peng-Ju ZHANG; Xiao-Yan HU; Wei-Wen CHEN; Feng KONG; Zhi-Fang LIU; Hui-Qing YUAN; Jian-Ye ZHANG

    2005-01-01

    NKX3.1 is a prostate-specific homeobox gene related to prostate development and prostate cancer. In this work, we aimed to identify precisely the functional cis-element in the 197 bp region (from -1032 to -836 bp) of the NKX3.1 promoter (from -1032 to +8 bp), which was previously identified to present positive regulatory activity on NKX3.1 expression, by deletion mutagenesis analysis and electrophoretic mobility shift assay (EMSA). A 16 bp positive cis-element located between -920 and -905 bp upstream of the NKX3.1 gene was identified by deletion mutation analysis and proved to be a functional positive cis-element by EMSA. It will be important to further study the functions and regulatory mechanisms of this positive cis-element in NKX3.1 gene expression.

  6. Solid Phase Biosensors for Arsenic or Cadmium Composed of A trans Factor and cis Element Complex

    Directory of Open Access Journals (Sweden)

    Mohammad Shohel Rana Siddiki

    2011-10-01

    Full Text Available The presence of toxic metals in drinking water has hazardous effects on human health. This study was conducted to develop GFP-based-metal-binding biosensors for on-site assay of toxic metal ions. GFP-tagged ArsR and CadC proteins bound to a cis element, and lost the capability of binding to it in their As- and Cd-binding conformational states, respectively. Water samples containing toxic metals were incubated on a complex of GFP-tagged ArsR or CadC and cis element which was immobilized on a solid surface. Metal concentrations were quantified with fluorescence intensity of the metal-binding states released from the cis element. Fluorescence intensity obtained with the assay significantly increased with increasing concentrations of toxic metals. Detection limits of 1 μg/L for Cd(II and 5 μg/L for As(III in purified water and 10 µg/L for Cd(II and As(III in tap water and bottled mineral water were achieved by measurement with a battery-powered portable fluorometer after 15-min and 30-min incubation, respectively. A complex of freeze dried GFP-tagged ArsR or CadC binding to cis element was stable at 4 °C and responded to 5 μg/L As(III or Cd(II. The solid phase biosensors are sensitive, less time-consuming, portable, and could offer a protocol for on-site evaluation of the toxic metals in drinking water.

  7. Solid phase biosensors for arsenic or cadmium composed of A trans factor and cis element complex.

    Science.gov (United States)

    Siddiki, Mohammad Shohel Rana; Kawakami, Yasunari; Ueda, Shunsaku; Maeda, Isamu

    2011-01-01

    The presence of toxic metals in drinking water has hazardous effects on human health. This study was conducted to develop GFP-based-metal-binding biosensors for on-site assay of toxic metal ions. GFP-tagged ArsR and CadC proteins bound to a cis element, and lost the capability of binding to it in their As- and Cd-binding conformational states, respectively. Water samples containing toxic metals were incubated on a complex of GFP-tagged ArsR or CadC and cis element which was immobilized on a solid surface. Metal concentrations were quantified with fluorescence intensity of the metal-binding states released from the cis element. Fluorescence intensity obtained with the assay significantly increased with increasing concentrations of toxic metals. Detection limits of 1 μg/L for Cd(II) and 5 μg/L for As(III) in purified water and 10 µg/L for Cd(II) and As(III) in tap water and bottled mineral water were achieved by measurement with a battery-powered portable fluorometer after 15-min and 30-min incubation, respectively. A complex of freeze dried GFP-tagged ArsR or CadC binding to cis element was stable at 4 °C and responded to 5 μg/L As(III) or Cd(II). The solid phase biosensors are sensitive, less time-consuming, portable, and could offer a protocol for on-site evaluation of the toxic metals in drinking water. PMID:22346629

  8. Analysing Music with Point-Set Compression Algorithms

    DEFF Research Database (Denmark)

    Meredith, David

    2016-01-01

    Several point-set pattern-discovery and compression algorithms designed for analysing music are reviewed and evaluated. Each algorithm takes as input a point-set representation of a score in which each note is represented as a point in pitch-time space. Each algorithm computes the maximal...... sections in pieces of classical music. On the first task, the best-performing algorithms achieved success rates of around 84%. In the second task, the best algorithms achieved mean F1 scores of around 0.49, with scores for individual pieces rising as high as 0.71....

  9. Expression of zebrafish pax6b in pancreas is regulated by two enhancers containing highly conserved cis-elements bound by PDX1, PBX and PREP factors

    Directory of Open Access Journals (Sweden)

    Biemar Frédéric

    2008-05-01

    Full Text Available Abstract Background PAX6 is a transcription factor playing a crucial role in the development of the eye and in the differentiation of the pancreatic endocrine cells as well as of enteroendocrine cells. Studies on the mouse Pax6 gene have shown that sequences upstream from the P0 promoter are required for expression in the lens and the pancreas; but there remain discrepancies regarding the precise location of the pancreatic regulatory elements. Results Due to genome duplication in the evolution of ray-finned fishes, zebrafish has two pax6 genes, pax6a and pax6b. While both zebrafish pax6 genes are expressed in the developing eye and nervous system, only pax6b is expressed in the endocrine cells of the pancreas. To investigate the cause of this differential expression, we used a combination of in silico, in vivo and in vitro approaches. We show that the pax6b P0 promoter targets expression to endocrine pancreatic cells and also to enteroendocrine cells, retinal neurons and the telencephalon of transgenic zebrafish. Deletion analyses indicate that strong pancreatic expression of the pax6b gene relies on the combined action of two conserved regulatory enhancers, called regions A and C. By means of gel shift assays, we detected binding of the homeoproteins PDX1, PBX and PREP to several cis-elements of these regions. In constrast, regions A and C of the zebrafish pax6a gene are not active in the pancreas, this difference being attributable to sequence divergences within two cis-elements binding the pancreatic homeoprotein PDX1. Conclusion Our data indicate a conserved role of enhancers A and C in the pancreatic expression of pax6b and emphasize the importance of the homeoproteins PBX and PREP cooperating with PDX1, in activating pax6b expression in endocrine pancreatic cells. This study also provides a striking example of how adaptative evolution of gene regulatory sequences upon gene duplication progressively leads to subfunctionalization of the

  10. COMPREHENSIVE TWO-POINT ANALYSES OF WEAK GRAVITATIONAL LENSING SURVEYS

    International Nuclear Information System (INIS)

    We present a framework for analyzing weak gravitational lensing survey data, including lensing and source-density observables, plus spectroscopic redshift calibration data. All two-point observables are predicted in terms of parameters of a perturbed Robertson-Walker metric, making the framework independent of the models for gravity, dark energy, or galaxy properties. For Gaussian fluctuations, the two-point model determines the survey likelihood function and allows Fisher matrix forecasting. The framework includes nuisance terms for the major systematic errors: shear measurement errors, magnification bias and redshift calibration errors, intrinsic galaxy alignments, and inaccurate theoretical predictions. We propose flexible parameterizations of the many nuisance parameters related to galaxy bias and intrinsic alignment. For the first time, we can integrate many different observables and systematic errors into a single analysis. As a first application of this framework, we demonstrate that: uncertainties in power-spectrum theory cause very minor degradation to cosmological information content; nearly all useful information (excepting baryon oscillations) is extracted with ∼3 bins per decade of angular scale; and the rate at which galaxy bias varies with redshift, substantially influences the strength of cosmological inference. The framework will permit careful study of the interplay between numerous observables, systematic errors, and spectroscopic calibration data for large weak lensing surveys.

  11. Identification of a peroxisome proliferator responsive element (PPRE)-like cis-element in mouse plasminogen activator inhibitor-1 gene promoter

    International Nuclear Information System (INIS)

    PAI-1 is expressed and secreted by adipose tissue which may mediate the pathogenesis of obesity-associated cardiovascular complications. Evidence is presented in this report that PAI-1 is not expressed by preadipocyte, but significantly induced during 3T3-L1 adipocyte differentiation and the PAI-1 expression correlates with the induction of peroxisome proliferator-activated receptor γ (PPARγ). A peroxisome proliferator responsive element (PPRE)-like cis-element (-206TCCCCCATGCCCT-194) is identified in the mouse PAI-1 gene promoter by electrophoretic mobility shift assay (EMSA) combined with transient transfection experiments; the PPRE-like cis-element forms a specific DNA-protein complex only with adipocyte nuclear extracts, not with preadipocyte nuclear extracts; the DNA-protein complex can be totally competed away by non-labeled consensus PPRE, and can be supershifted with PPARγ antibody. Mutation of this PPRE-like cis-element can abolish the transactivation of mouse PAI-1 promoter mediated by PPARγ. Specific PPARγ ligand Pioglitazone can significantly induce the PAI-1 expression, and stimulate the secretion of PAI-1 into medium

  12. Multiple cis elements within the Igf2/H19 insulator domain organize a distance-dependent silencer. A cautionary note.

    Science.gov (United States)

    Ginjala, Vasudeva; Holmgren, Claes; Ullerås, Erik; Kanduri, Chandrasekhar; Pant, Vinod; Lobanenkov, Victor; Franklin, Gary; Ohlsson, Rolf

    2002-02-22

    The 5'-flank of the H19 gene harbors a differentially methylated imprinting control region that represses the maternally derived Igf2 and paternally derived H19 alleles. Here we show that the H19 imprinting control region (ICR) is a potent silencer when positioned in a promoter-proximal position. The silencing effect is not alleviated by trichostatin A treatment, suggesting that it does not involve histone deacetylase functions. When the H19 ICR is separated from the promoter by more than 1.2 +/- 0.3 kb, however, trichostatin A stimulates promoter activity 10-fold. Deletion analyses revealed that the silencing feature extended throughout the ICR segment. Finally, chromatin immunopurification analyses revealed that the H19 ICR prevented trichostatin A-dependent reacetylation of histones in the promoter region in a proximal but not in a distal position. We argue that these features are likely to be side effects of the H19 ICR, rather than explaining the mechanism of silencing of the paternal H19 allele. We issue a cautionary note, therefore, that the interpretation of insulator/silencer data could be erroneous should the distance issue not be taken into consideration. PMID:11777900

  13. Meta-analysis of breast cancer microarray studies in conjunction with conserved cis-elements suggest patterns for coordinate regulation

    Directory of Open Access Journals (Sweden)

    Lundberg Cathryn

    2008-01-01

    specific cis-acting target sites which may collectively play a role in the differential gene expression patterns observed in ER+ versus ER- breast cancer tumors. Importantly, the gene sets and associated DNA motifs provide a starting point with which to explore the mechanistic basis for the observed expression patterns in breast tumors.

  14. CstF-64 and 3'-UTR cis-element determine Star-PAP specificity for target mRNA selection by excluding PAPα.

    Science.gov (United States)

    Kandala, Divya T; Mohan, Nimmy; A, Vivekanand; A P, Sudheesh; G, Reshmi; Laishram, Rakesh S

    2016-01-29

    Almost all eukaryotic mRNAs have a poly (A) tail at the 3'-end. Canonical PAPs (PAPα/γ) polyadenylate nuclear pre-mRNAs. The recent identification of the non-canonical Star-PAP revealed specificity of nuclear PAPs for pre-mRNAs, yet the mechanism how Star-PAP selects mRNA targets is still elusive. Moreover, how Star-PAP target mRNAs having canonical AAUAAA signal are not regulated by PAPα is unclear. We investigate specificity mechanisms of Star-PAP that selects pre-mRNA targets for polyadenylation. Star-PAP assembles distinct 3'-end processing complex and controls pre-mRNAs independent of PAPα. We identified a Star-PAP recognition nucleotide motif and showed that suboptimal DSE on Star-PAP target pre-mRNA 3'-UTRs inhibit CstF-64 binding, thus preventing PAPα recruitment onto it. Altering 3'-UTR cis-elements on a Star-PAP target pre-mRNA can switch the regulatory PAP from Star-PAP to PAPα. Our results suggest a mechanism of poly (A) site selection that has potential implication on the regulation of alternative polyadenylation. PMID:26496945

  15. CstF-64 and 3′-UTR cis-element determine Star-PAP specificity for target mRNA selection by excluding PAPα

    Science.gov (United States)

    Kandala, Divya T.; Mohan, Nimmy; A, Vivekanand; AP, Sudheesh; G, Reshmi; Laishram, Rakesh S.

    2016-01-01

    Almost all eukaryotic mRNAs have a poly (A) tail at the 3′-end. Canonical PAPs (PAPα/γ) polyadenylate nuclear pre-mRNAs. The recent identification of the non-canonical Star-PAP revealed specificity of nuclear PAPs for pre-mRNAs, yet the mechanism how Star-PAP selects mRNA targets is still elusive. Moreover, how Star-PAP target mRNAs having canonical AAUAAA signal are not regulated by PAPα is unclear. We investigate specificity mechanisms of Star-PAP that selects pre-mRNA targets for polyadenylation. Star-PAP assembles distinct 3′-end processing complex and controls pre-mRNAs independent of PAPα. We identified a Star-PAP recognition nucleotide motif and showed that suboptimal DSE on Star-PAP target pre-mRNA 3′-UTRs inhibit CstF-64 binding, thus preventing PAPα recruitment onto it. Altering 3′-UTR cis-elements on a Star-PAP target pre-mRNA can switch the regulatory PAP from Star-PAP to PAPα. Our results suggest a mechanism of poly (A) site selection that has potential implication on the regulation of alternative polyadenylation. PMID:26496945

  16. Spatiotemporal analyses of soil moisture from point to footprint scale in two different hydroclimatic regions

    Science.gov (United States)

    Joshi, Champa; Mohanty, Binayak P.; Jacobs, Jennifer M.; Ines, Amor V. M.

    2011-01-01

    This paper presents time stability analyses of soil moisture at different spatial measurement support scales (point scale and airborne remote sensing (RS) footprint scale 800 m × 800 m) in two different hydroclimatic regions. The data used in the analyses consist of in situ and passive microwave remotely sensed soil moisture data from the Southern Great Plains Hydrology Experiments 1997 and 1999 (SGP97 and SGP99) conducted in the Little Washita (LW) watershed, Oklahoma, and the Soil Moisture Experiments 2002 and 2005 (SMEX02 and SMEX05) in the Walnut Creek (WC) watershed, Iowa. Results show that in both the regions soil properties (i.e., percent silt, percent sand, and soil texture) and topography (elevation and slope) are significant physical controls jointly affecting the spatiotemporal evolution and time stability of soil moisture at both point and footprint scales. In Iowa, using point-scale soil moisture measurements, the WC11 field was found to be more time stable (TS) than the WC12 field. The common TS points using data across the 3 year period (2002-2005) were mostly located at moderate to high elevations in both the fields. Furthermore, the soil texture at these locations consists of either loam or clay loam soil. Drainage features and cropping practices also affected the field-scale soil moisture variability in the WC fields. In Oklahoma, the field having a flat topography (LW21) showed the worst TS features compared to the fields having gently rolling topography (LW03 and LW13). The LW13 field (silt loam) exhibited better time stability than the LW03 field (sandy loam) and the LW21 field (silt loam). At the RS footprint scale, in Iowa, the analysis of variance (ANOVA) tests show that the percent clay and percent sand are better able to discern the TS features of the footprints compared to the soil texture. The best soil indicator of soil moisture time stability is the loam soil texture. Furthermore, the hilltops (slope ˜0%-0.45%) exhibited the best TS

  17. Reliability of an experimental method to analyse the impact point on a golf ball during putting.

    Science.gov (United States)

    Richardson, Ashley K; Mitchell, Andrew C S; Hughes, Gerwyn

    2015-06-01

    This study aimed to examine the reliability of an experimental method identifying the location of the impact point on a golf ball during putting. Forty trials were completed using a mechanical putting robot set to reproduce a putt of 3.2 m, with four different putter-ball combinations. After locating the centre of the dimple pattern (centroid) the following variables were tested; distance of the impact point from the centroid, angle of the impact point from the centroid and distance of the impact point from the centroid derived from the X, Y coordinates. Good to excellent reliability was demonstrated in all impact variables reflected in very strong relative (ICC = 0.98-1.00) and absolute reliability (SEM% = 0.9-4.3%). The highest SEM% observed was 7% for the angle of the impact point from the centroid. In conclusion, the experimental method was shown to be reliable at locating the centroid location of a golf ball, therefore allowing for the identification of the point of impact with the putter head and is suitable for use in subsequent studies. PMID:26102559

  18. Det-Det correlations for quantum maps: Dual pair and saddle-point analyses

    International Nuclear Information System (INIS)

    An attempt is made to clarify the ballistic nonlinear sigma model formalism recently proposed for quantum chaotic systems, by looking at the spectral determinant Z(s)=Det(1-sU) for quantized maps U(set-membership sign)U(N), and studying the correlator ωU(s)=∫dθ vertical bar Z(eiθs) vertical bar2. By identifying U(N) as one member of a dual pair acting in the spinor representation of Spin(4N), the expansion of ωU(s) in powers of s2 is shown to be a decomposition into irreducible characters of U(N). In close analogy with the ballistic nonlinear sigma model, a coherent-state integral representation of ωU(s) is developed. For generic U this integral has (N2N) saddle points and the leading-order saddle-point approximation turns out to reproduce ωU(s) exactly, up to a constant factor. This miracle is explained by interpreting ωU(s) as a character of U(2N), and arguing that the leading-order saddle-point result corresponds to the Weyl character formula. Unfortunately, the Weyl decomposition behaves nonsmoothly in the semiclassical limit N→∞, and to make further progress some additional averaging needs to be introduced. Several schemes are investigated, including averaging over basis states and an ''isotropic'' average. The saddle-point approximation applied in conjunction with these schemes is demonstrated to give incorrect results in general, one notable exception being a semiclassical averaging scheme, for which all loop corrections vanish identically. As a side product of the dual pair decomposition with isotropic averaging, the crossover between the Poisson and CUE limits is obtained

  19. Limit-point buckling analyses using solid, shell and solid.shell elements

    International Nuclear Information System (INIS)

    In this paper, the recently-developed solid-shell element SHB8PS is used for the analysis of a representative set of popular limit-point buckling benchmark problems. For this purpose, the element has been implemented in Abaqus/Standard finite element software and the modified Riks method was employed as an efficient path-following strategy. For the benchmark problems tested, the new element shows better performance compared to solid elements and often performs as well as state-of-the-art shell elements. In contrast to shell elements, it allows for the accurate prescription of boundary conditions as applied to the actual edges of the structure

  20. Performance analyses of subcarrier BPSK modulation over M turbulence channels with pointing errors

    Science.gov (United States)

    Ma, Shuang; Li, Ya-tian; Wu, Jia-bin; Geng, Tian-wen; Wu, Zhiyong

    2016-05-01

    An aggregated channel model is achieved by fitting the Weibull distribution, which includes the effects of atmospheric attenuation, M distributed atmospheric turbulence and nonzero boresight pointing errors. With this approximate channel model, the bit error rate ( BER) and the ergodic capacity of free-space optical (FSO) communication systems utilizing subcarrier binary phase-shift keying (BPSK) modulation are analyzed, respectively. A closed-form expression of BER is derived by using the generalized Gauss-Lagueree quadrature rule, and the bounds of ergodic capacity are discussed. Monte Carlo simulation is provided to confirm the validity of the BER expressions and the bounds of ergodic capacity.

  1. Limit-point buckling analyses using solid, shell and solid.shell elements

    Energy Technology Data Exchange (ETDEWEB)

    Killpack, Marc; Abed-Meraim, Farid [CNRS, Metz Cedex (France)

    2011-05-15

    In this paper, the recently-developed solid-shell element SHB8PS is used for the analysis of a representative set of popular limit-point buckling benchmark problems. For this purpose, the element has been implemented in Abaqus/Standard finite element software and the modified Riks method was employed as an efficient path-following strategy. For the benchmark problems tested, the new element shows better performance compared to solid elements and often performs as well as state-of-the-art shell elements. In contrast to shell elements, it allows for the accurate prescription of boundary conditions as applied to the actual edges of the structure.

  2. Limit-point buckling analyses using solid, shell and solid–shell elements

    OpenAIRE

    KILLPACK, Marc; ABED-MERAIM, Farid

    2011-01-01

    In this paper, the recently-developed solid-shell element SHB8PS is used for the analysis of a representative set of popular limit-point buckling benchmark problems. For this purpose, the element has been implemented in Abaqus/Standard finite element software and the modified Riks method was employed as an efficient path-following strategy. For the. benchmark problems tested, the new element shows better performance compared to solid elements and often performs as well as state-of-the-art she...

  3. Analyses of methyltransferases across the pathogenicity spectrum of different mycobacterial species point to an extremophile connection.

    Science.gov (United States)

    Grover, Sonam; Gupta, Paras; Kahlon, Parvinderdeep S; Goyal, Sukriti; Grover, Abhinav; Dalal, Kuldeep; Sabeeha; Ehtesham, Nasreen Z; Hasnain, Seyed E

    2016-05-26

    Tuberculosis is a devastating disease, taking one human life every 20 seconds globally. We hypothesize that professional pathogens such as M.tb have acquired specific features that might assist in causing infection, persistence and transmissible pathology in their host. We have identified 121 methyltransferases (MTases) in the M.tb proteome, which use a variety of substrates - DNA, RNA, protein, intermediates of mycolic acid biosynthesis and other fatty acids - that are involved in cellular maintenance within the host. A comparative analysis of the proteome of the virulent strain H37Rv and the avirulent strain H37Ra identified 3 MTases, which displayed significant variations in terms of N-terminal extension/deletion and point mutations, possibly impacting various physicochemical properties. The cross-proteomic comparison of MTases of M.tb H37Rv with 15 different Mycobacterium species revealed the acquisition of novel MTases in a MTB complex as a function of evolution. Phylogenetic analysis revealed that these newly acquired MTases showed common roots with certain extremophiles such as halophilic and acidophilic organisms. Our results establish an evolutionary relationship of M.tb with halotolerant organisms and also the role of MTases of M.tb in withstanding the host osmotic stress, thereby pointing to their likely role in pathogenesis, virulence and niche adaptation. PMID:26983646

  4. Point processes statistics of stable isotopes: analysing water uptake patterns in a mixed stand of Aleppo pine and Holm oak

    Directory of Open Access Journals (Sweden)

    Carles Comas

    2015-04-01

    Full Text Available Aim of study: Understanding inter- and intra-specific competition for water is crucial in drought-prone environments. However, little is known about the spatial interdependencies for water uptake among individuals in mixed stands. The aim of this work was to compare water uptake patterns during a drought episode in two common Mediterranean tree species, Quercus ilex L. and Pinus halepensis Mill., using the isotope composition of xylem water (δ18O, δ2H as hydrological marker. Area of study: The study was performed in a mixed stand, sampling a total of 33 oaks and 78 pines (plot area= 888 m2. We tested the hypothesis that both species uptake water differentially along the soil profile, thus showing different levels of tree-to-tree interdependency, depending on whether neighbouring trees belong to one species or the other. Material and Methods: We used pair-correlation functions to study intra-specific point-tree configurations and the bivariate pair correlation function to analyse the inter-specific spatial configuration. Moreover, the isotopic composition of xylem water was analysed as a mark point pattern. Main results: Values for Q. ilex (δ18O = –5.3 ± 0.2‰, δ2H = –54.3 ± 0.7‰ were significantly lower than for P. halepensis (δ18O = –1.2 ± 0.2‰, δ2H = –25.1 ± 0.8‰, pointing to a greater contribution of deeper soil layers for water uptake by Q. ilex. Research highlights: Point-process analyses revealed spatial intra-specific dependencies among neighbouring pines, showing neither oak-oak nor oak-pine interactions. This supports niche segregation for water uptake between the two species.

  5. Primary structure and promoter analysis of leghemoglobin genes of the stem-nodulated tropical legume Sesbania rostrata: conserved coding sequences, cis-elements and trans-acting factors

    DEFF Research Database (Denmark)

    Metz, B A; Welters, P; Hoffmann, H J; Jensen, E O; Schell, J

    1988-01-01

    The primary structure of a leghemoglobin (lb) gene from the stem-nodulated, tropical legume Sesbania rostrata and two lb gene promoter regions was analysed. The S. rostrata lb gene structure and Lb amino acid composition were found to be highly conserved with previously described lb genes and Lb...... proteins. Distinct DNA elements were identified in the S. rostrata lb promoter regions, which share a high degree of homology with cis-active regulatory elements found in the soybean (Glycine max) lbc3 promoter. One conserved DNA element was found to interact specifically with an apparently universal...

  6. Light and abiotic stresses regulate the expression of GDP-L-galactose phosphorylase and levels of ascorbic acid in two kiwifruit genotypes via light-responsive and stress-inducible cis-elements in their promoters.

    Science.gov (United States)

    Li, Juan; Liang, Dong; Li, Mingjun; Ma, Fengwang

    2013-09-01

    Ascorbic acid (AsA) plays an essential role in plants by protecting cells against oxidative damage. GDP-L-galactose phosphorylase (GGP) is the first committed gene for AsA synthesis. Our research examined AsA levels, regulation of GGP gene expression, and how these are related to abiotic stresses in two species of Actinidia (kiwifruit). When leaves were subjected to continuous darkness or light, ABA or MeJA, heat, or a hypoxic environment, we found some correlation between the relative levels of GGP mRNA and AsA concentrations. In transformed tobacco plants, activity of the GGP promoter was induced by all of these treatments. However, the degree of inducibility in the two kiwifruit species differed among the GGP promoter deletions. We deduced that the G-box motif, a light-responsive element, may have an important function in regulating GGP transcripts under various light conditions in both A. deliciosa and A. eriantha. Other elements such as ABRE, the CGTCA motif, and HSE might also control the promoter activities of GGP in kiwifruit. Altogether, these data suggest that GGP expression in the two kiwifruit species is regulated by light or abiotic stress via the relative cis-elements in their promoters. Furthermore, GGP has a critical role in modulating AsA concentrations in kiwifruit species under abiotic stresses. PMID:23775440

  7. ORA47 (octadecanoid-responsive AP2/ERF-domain transcription factor 47) regulates jasmonic acid and abscisic acid biosynthesis and signaling through binding to a novel cis-element.

    Science.gov (United States)

    Chen, Hsing-Yu; Hsieh, En-Jung; Cheng, Mei-Chun; Chen, Chien-Yu; Hwang, Shih-Ying; Lin, Tsan-Piao

    2016-07-01

    ORA47 (octadecanoid-responsive AP2/ERF-domain transcription factor 47) of Arabidopsis thaliana is an AP2/ERF domain transcription factor that regulates jasmonate (JA) biosynthesis and is induced by methyl JA treatment. The regulatory mechanism of ORA47 remains unclear. ORA47 is shown to bind to the cis-element (NC/GT)CGNCCA, which is referred to as the O-box, in the promoter of ABI2. We proposed that ORA47 acts as a connection between ABA INSENSITIVE1 (ABI1) and ABI2 and mediates an ABI1-ORA47-ABI2 positive feedback loop. PORA47:ORA47-GFP transgenic plants were used in a chromatin immunoprecipitation (ChIP) assay to show that ORA47 participates in the biosynthesis and/or signaling pathways of nine phytohormones. Specifically, many abscisic acid (ABA) and JA biosynthesis and signaling genes were direct targets of ORA47 under stress conditions. The JA content of the P35S:ORA47-GR lines was highly induced under wounding and moderately induced under water stress relative to that of the wild-type plants. The wounding treatment moderately increased ABA accumulation in the transgenic lines, whereas the water stress treatment repressed the ABA content. ORA47 is proposed to play a role in the biosynthesis of JA and ABA and in regulating the biosynthesis and/or signaling of a suite of phytohormone genes when plants are subjected to wounding and water stress. PMID:26974851

  8. A Transcription Factor γMYB1 Binds to the P1BS cis-Element and Activates PLA2-γ Expression with its Co-Activator γMYB2.

    Science.gov (United States)

    Nguyen, Ha Thi Kim; Kim, Soo Youn; Cho, Kwang-Moon; Hong, Jong Chan; Shin, Jeong Sheop; Kim, Hae Jin

    2016-04-01

    Phospholipase A2(PLA2) hydrolyzes phospholipid molecules to produce two products that are both precursors of second messengers of signaling pathways and signaling molecules per se.Arabidopsis thaliana PLA2paralogs (-β,-γand-δ) play critical roles during pollen development, pollen germination and tube growth. In this study, analysis of thePLA2-γpromoter using a deletion series revealed that the promoter region -153 to -1 is crucial for its pollen specificity. Using a yeast one-hybrid screening assay with thePLA2-γpromoter and an Arabidopsis transcription factor (TF)-only library, we isolated two novel MYB-like TFs belonging to the MYB-CC family, denoted here as γMYB1 and γMYB2. By electrophoretic mobility shift assay, we found that these two TFs bind directly to the P1BS (phosphate starvation response 1-binding sequence)cis-element of thePLA2-γpromoter. γMYB1 alone functioned as a transcriptional activator forPLA2-γexpression, whereas γMYB2 directly interacted with γMYB1 and enhanced its activation. Overexpression ofγMYB1in the mature pollen grain led to increased expression of not only thePLA2-γgene but also of several genes whose promoters contain the P1BScis-element and which are involved in the Pi starvation response, phospholipid biosynthesis and sugar synthesis. Based on these results, we suggest that the TF γMYB1 binds to the P1BScis-element, activates the expression ofPLA2-γwith the assistance of its co-activator, γMYB2, and regulates the expression of several target genes involved in many plant metabolic reactions. PMID:26872838

  9. Regeneration of Rhizophora mucronata (Lamk.) in degraded mangrove forest: Lessons from point pattern analyses of local tree interactions

    Science.gov (United States)

    Olagoke, Adewole O.; Bosire, Jared O.; Berger, Uta

    2013-07-01

    Spatial structural patterns emerging from local tree interactions influence growth, mortality and regeneration processes in forest ecosystems, and decoding them enhance the understanding of ecological mechanisms affecting forest regeneration. Point-Patterns analysis was applied for the very first time to mangrove ecology to explore the spatial structure of Rhizophora mucronata regeneration in a disturbed mangrove forest; and the pattern of associations of juvenile-adult trees. R. mucronata trees were mapped in plots of 50 m × 10 m located at the seaward, central and landward edge along 50 m wide transect in the forest, and the mapped patterns were analysed with pair correlation and mark-connection functions. The population density of R. mucronata differed along the tidal gradient with the highest density in the central region, and the least near the shoreline. The study revealed that short distance propagule dispersal, resulting in the establishment of juveniles in closed distance to the mother trees, might not be the driving force for distribution of this species. The spatial structural pattern of R. mucronata population along tidal gradient showed a characteristic spatial aggregation at small scale, but randomly distributed as the distances become larger. There was a distinct spatial segregation between recruits and adult trees, and hence spatially independent. Though, adult-adult trees associations did not show a clear spatial segregation pattern; the recruit-recruit species associations exhibited significant clustering in space. Although habitat heterogeneity might be responsible for the local scale aggregation in this population, the effect of plant-plant conspecific interactions is more probable to inform the long-term structure and dynamics of the population of R. mucronata, and ditto for the entire forest.

  10. Surface Observation and Pore Size Analyses of Polypropylene/Low-Melting Point Polyester Filter Materials: Influences of Heat Treatment

    Directory of Open Access Journals (Sweden)

    Lin Jia-Horng

    2016-01-01

    Full Text Available This study proposes making filter materials with polypropylene (PP and low-melting point (LPET fibers. The influences of temperatures and times of heat treatment on the morphology of thermal bonding points and average pore size of the PP/LPET filter materials. The test results indicate that the morphology of thermal bonding points is highly correlated with the average pore size. When the temperature of heat treatment is increased, the fibers are joined first with the thermal bonding points, and then with the large thermal bonding areas, thereby decreasing the average pore size of the PP/LPET filter materials. A heat treatment of 110 °C for 60 seconds can decrease the pore size from 39.6 μm to 12.0 μm.

  11. Reconstruction of thermotolerant yeast by one-point mutation identified through whole-genome analyses of adaptively-evolved strains.

    Science.gov (United States)

    Satomura, Atsushi; Miura, Natsuko; Kuroda, Kouichi; Ueda, Mitsuyoshi

    2016-01-01

    Saccharomyces cerevisiae is used as a host strain in bioproduction, because of its rapid growth, ease of genetic manipulation, and high reducing capacity. However, the heat produced during the fermentation processes inhibits the biological activities and growth of the yeast cells. We performed whole-genome sequencing of 19 intermediate strains previously obtained during adaptation experiments under heat stress; 49 mutations were found in the adaptation steps. Phylogenetic tree revealed at least five events in which these strains had acquired mutations in the CDC25 gene. Reconstructed CDC25 point mutants based on a parental strain had acquired thermotolerance without any growth defects. These mutations led to the downregulation of the cAMP-dependent protein kinase (PKA) signaling pathway, which controls a variety of processes such as cell-cycle progression and stress tolerance. The one-point mutations in CDC25 were involved in the global transcriptional regulation through the cAMP/PKA pathway. Additionally, the mutations enabled efficient ethanol fermentation at 39 °C, suggesting that the one-point mutations in CDC25 may contribute to bioproduction. PMID:26984760

  12. Two-electron F' centers in alkali halides: a saddle point approach. I. General and semicontinuum analyses

    OpenAIRE

    Georgiev, Mladen

    2006-01-01

    The F' center in an alkali halide forms when an anion vacancy traps two electrons which is the prerequisite of a diatomic molecule. Indeed, the center may displace left or right along in a (110) plane, due to its coupling to the B_{1u} vibrational mode of polarization respectively. On jumping from the initial position to the final position the F' center passes through a saddle point which configuration is molecule-like being conformed by two neighboring semi-vacancies along . Each semi-vaca...

  13. Analyses of point mutation repair and allelic heterogeneity generated by CRISPR/Cas9 and single-stranded DNA oligonucleotides.

    Science.gov (United States)

    Bialk, Pawel; Sansbury, Brett; Rivera-Torres, Natalia; Bloh, Kevin; Man, Dula; Kmiec, Eric B

    2016-01-01

    The repair of a point mutation can be facilitated by combined activity of a single-stranded oligonucleotide and a CRISPR/Cas9 system. While the mechanism of action of combinatorial gene editing remains to be elucidated, the regulatory circuitry of nucleotide exchange executed by oligonucleotides alone has been largely defined. The presence of the appropriate CRISPR/Cas9 system leads to an enhancement in the frequency of gene editing directed by single-stranded DNA oligonucleotides. While CRISPR/Cas9 executes double-stranded DNA cleavage efficiently, closure of the broken chromosomes is dynamic, as varying degrees of heterogeneity of the cleavage products appear to accompany the emergence of the corrected base pair. We provide a detailed analysis of allelic variance at and surrounding the target site. In one particular case, we report sequence alteration directed by a distinct member of the same gene family. Our data suggests that single-stranded DNA molecules may influence DNA junction heterogeneity created by CRISPR/Cas9. PMID:27609304

  14. Effects of advanced glycosylation end products on interactions between cis-elements and trans-acting factors of hepatic insulin receptor gene%晚期糖基化终末产物对胰岛素受体顺式调控元件和反式作用因子相互作用的影响

    Institute of Scientific and Technical Information of China (English)

    戎健; 于长青; 杨沛

    2009-01-01

    , along with nonspecifie binding increasing. Conclusion The impact of AGEs on hlR gene expression seems to be related to the effects on cis-elements and trans-acting factors.

  15. Influence of Immersion Conditions on The Tensile Strength of Recycled Kevlar®/Polyester/Low-Melting-Point Polyester Nonwoven Geotextiles through Applying Statistical Analyses

    Directory of Open Access Journals (Sweden)

    Jing-Chzi Hsieh

    2016-05-01

    Full Text Available The recycled Kevlar®/polyester/low-melting-point polyester (recycled Kevlar®/PET/LPET nonwoven geotextiles are immersed in neutral, strong acid, and strong alkali solutions, respectively, at different temperatures for four months. Their tensile strength is then tested according to various immersion periods at various temperatures, in order to determine their durability to chemicals. For the purpose of analyzing the possible factors that influence mechanical properties of geotextiles under diverse environmental conditions, the experimental results and statistical analyses are incorporated in this study. Therefore, influences of the content of recycled Kevlar® fibers, implementation of thermal treatment, and immersion periods on the tensile strength of recycled Kevlar®/PET/LPET nonwoven geotextiles are examined, after which their influential levels are statistically determined by performing multiple regression analyses. According to the results, the tensile strength of nonwoven geotextiles can be enhanced by adding recycled Kevlar® fibers and thermal treatment.

  16. Analysed a defective of the machine for a cap-tube nuclear fuel element ME-27 from its electricity point of view

    International Nuclear Information System (INIS)

    It has been analysed a defective of the machine for a cap-tube nuclear fuel element ME-27 from its electricity point of view. The machine uses magnetic force resistance welding technique. A short circuit was happened within the machine because the nut for tightening high voltage cable for welding transformer was broken so that the cable touched the machine body and produced the short circuit. This condition made both the primary circuit breaker in the building down and produced high voltage pulse induction to the electronic circuit within the machine so that one of its electronic components was defective. This case becomes warnings on how important of tightening a nut according to its strength specification (using wrench torque) and the necessity of voltage transient limitation circuit to be installed. Both of the warnings are necessary for any equipment consuming high electric current oriented such as the ME-27 machine. (author)

  17. Evaluating the effect of sample type on American alligator (Alligator mississippiensis) analyte values in a point-of-care blood analyser.

    Science.gov (United States)

    Hamilton, Matthew T; Finger, John W; Winzeler, Megan E; Tuberville, Tracey D

    2016-01-01

    The assessment of wildlife health has been enhanced by the ability of point-of-care (POC) blood analysers to provide biochemical analyses of non-domesticated animals in the field. However, environmental limitations (e.g. temperature, atmospheric humidity and rain) and lack of reference values may inhibit researchers from using such a device with certain wildlife species. Evaluating the use of alternative sample types, such as plasma, in a POC device may afford researchers the opportunity to delay sample analysis and the ability to use banked samples. In this study, we examined fresh whole blood, fresh plasma and frozen plasma (sample type) pH, partial pressure of carbon dioxide (PCO2), bicarbonate (HCO3 (-)), total carbon dioxide (TCO2), base excess (BE), partial pressure of oxygen (PO2), oxygen saturation (sO2) and lactate concentrations in 23 juvenile American alligators (Alligator mississippiensis) using an i-STAT CG4+ cartridge. Our results indicate that sample type had no effect on lactate concentration values (F 2,65 = 0.37, P = 0.963), suggesting that the i-STAT analyser can be used reliably to quantify lactate concentrations in fresh and frozen plasma samples. In contrast, the other seven blood parameters measured by the CG4+ cartridge were significantly affected by sample type. Lastly, we were able to collect blood samples from all alligators within 2 min of capture to establish preliminary reference ranges for juvenile alligators based on values obtained using fresh whole blood. PMID:27382469

  18. Time point-based integrative analyses of deep-transcriptome identify four signal pathways in blastemal regeneration of zebrafish lower jaw.

    Science.gov (United States)

    Zhang, Hui; Wang, Xuelong; Lyu, Kailun; Gao, Siqi; Wang, Guan; Fan, Chunxin; Zhang, Xin A; Yan, Jizhou

    2015-03-01

    There has been growing interest in applying tissue engineering to stem cell-based regeneration therapies. We have previously reported that zebrafish can faithfully regenerate complicated tissue structures through blastemal cell type conversions and tissue reorganization. To unveil the regenerative factors and engineering arts of blastemal regeneration, we conducted transcriptomal analyses at four time points corresponding to preamputation, re-epitheliation, blastemal formation, and respecification. By combining the hierarchical gene ontology term network, the DAVID annotation system, and Euclidean distance clustering, we identified four signaling pathways: foxi1-foxo1b-pou3f1, pax3a-mant3a-col11/col2, pou5f1-cdx4-kdrl, and isl1-wnt11 PCP-sox9a. Results from immunohistochemical staining and promoter-driven transgenic fish suggest that these pathways, respectively, define wound epidermis reconstitution, cell type conversions, blastemal angiogenesis/vasculogenesis, and cartilage matrix-orientation. Foxi1 morpholino-knockdown caused expansions of Foxo1b- and Pax3a-expression in the basal layer-blastemal junction region. Moreover, foxi1 morphants displayed increased sox9a and hoxa2b transcripts in the embryonic pharyngeal arches. Thus, a Foxi1 signal switch is required to establish correct tissue patterns, including re-epitheliation and blastema formation. This study provides novel insight into a blastema regeneration strategy devised by epithelial cell transdifferentiation, blood vessel engineering, and cartilage matrix deposition. PMID:25420467

  19. Genome-wide analyses of exonic copy number variants in a family-based study point to novel autism susceptibility genes.

    Directory of Open Access Journals (Sweden)

    Maja Bucan

    2009-06-01

    Full Text Available The genetics underlying the autism spectrum disorders (ASDs is complex and remains poorly understood. Previous work has demonstrated an important role for structural variation in a subset of cases, but has lacked the resolution necessary to move beyond detection of large regions of potential interest to identification of individual genes. To pinpoint genes likely to contribute to ASD etiology, we performed high density genotyping in 912 multiplex families from the Autism Genetics Resource Exchange (AGRE collection and contrasted results to those obtained for 1,488 healthy controls. Through prioritization of exonic deletions (eDels, exonic duplications (eDups, and whole gene duplication events (gDups, we identified more than 150 loci harboring rare variants in multiple unrelated probands, but no controls. Importantly, 27 of these were confirmed on examination of an independent replication cohort comprised of 859 cases and an additional 1,051 controls. Rare variants at known loci, including exonic deletions at NRXN1 and whole gene duplications encompassing UBE3A and several other genes in the 15q11-q13 region, were observed in the course of these analyses. Strong support was likewise observed for previously unreported genes such as BZRAP1, an adaptor molecule known to regulate synaptic transmission, with eDels or eDups observed in twelve unrelated cases but no controls (p = 2.3x10(-5. Less is known about MDGA2, likewise observed to be case-specific (p = 1.3x10(-4. But, it is notable that the encoded protein shows an unexpectedly high similarity to Contactin 4 (BLAST E-value = 3x10(-39, which has also been linked to disease. That hundreds of distinct rare variants were each seen only once further highlights complexity in the ASDs and points to the continued need for larger cohorts.

  20. TopCAT and PySESA: Open-source software tools for point cloud decimation, roughness analyses, and quantitative description of terrestrial surfaces

    Science.gov (United States)

    Hensleigh, J.; Buscombe, D.; Wheaton, J. M.; Brasington, J.; Welcker, C. W.; Anderson, K.

    2015-12-01

    The increasing use of high-resolution topography (HRT) constructed from point clouds obtained from technology such as LiDAR, SoNAR, SAR, SfM and a variety of range-imaging techniques, has created a demand for custom analytical tools and software for point cloud decimation (data thinning and gridding) and spatially explicit statistical analysis of terrestrial surfaces. We will present on a number of analytical and computational tools designed to quantify surface roughness and texture, directly from point clouds in a variety of ways (using spatial- and frequency-domain statistics). TopCAT (Topographic Point Cloud Analysis Toolkit; Brasington et al., 2012) and PySESA (Python program for Spatially Explicit Spectral Analysis) both work by applying a small moving window to (x,y,z) data to calculate a suite of (spatial and spectral domain) statistics, which are then spatially-referenced on a regular (x,y) grid at a user-defined resolution. Collectively, these tools facilitate quantitative description of surfaces and may allow, for example, fully automated texture characterization and segmentation, roughness and grain size calculation, and feature detection and classification, on very large point clouds with great computational efficiency. Using tools such as these, it may be possible to detect geomorphic change in surfaces which have undergone minimal elevation difference, for example deflation surfaces which have coarsened but undergone no net elevation change, or surfaces which have eroded and accreted, leaving behind a different textural surface expression than before. The functionalities of the two toolboxes are illustrated with example high-resolution bathymetric point cloud data collected with multibeam echosounder, and topographic data collected with LiDAR.

  1. Atomistic analyses of competition between site-selective segregation and association of point defects at grain boundary in Y2O3-doped ZrO2

    International Nuclear Information System (INIS)

    The site-selective occupation of point defects, Y3+ ions (Y′Zr) and O2- vacancies (VÖ), and their associations at a symmetric tilt grain boundary (GB) are studied to understand their competitive contribution to energetically favorable atomic arrangements by using atomistic simulations. It is found that at the GB there are the favorable sites for segregation of an isolated Y′Zr and VÖ. This indicates that the driving force for the site-selective segregation is present. Moreover, our results of Y′Zr-VÖ association at the GB show that the lattice energies are very dispersed despite that a second-nearest neighbor (SNN) vacancy to Y′Zr is favored for bulk Y2O3-doped ZrO2. The result suggests that the site-selective segregation has significant effects on the favorable point defect arrangement at the GB core, competing with the point defect associations. For more realistic cases, Monte Carlo simulations are performed to reveal favorable atomic arrangements for a high dopant concentration, where point defects are crowded at the GB. The results show that the region of GB segregation can be classified with respect to O2- coordination to cation species; at the GB core the favorable configuration is not necessarily a SNN O2- vacancy relative to Y3+. On the other hand, eight-fold O2- coordination is sustained for Y3+ ions more than ∼3 Å distant from the GB plane. The difference in O2- coordination may play an important role in O2- ionic conductivity at GBs via the energetics for O2- migration. (author)

  2. Projecting the Current & Future Impact of Storm Surges on Coastal Flood Extent at Pigeon Point, South-West Tobago, through Hydrodynamic Modelling Analyses

    Science.gov (United States)

    Seenath, Avidesh; Wilson, Matthew; Miller, Keith

    2014-05-01

    Under climate change, sea levels will continue to rise and the intensity of tropical storms and hurricanes will amplify. Consequently, the incidence rate of high magnitude storm surges may increase which will enhance the probability of coastal flood events in low lying coastal communities. The purpose of this study is to determine the current and potential future areas that may be at risk of flooding from storm surges, of different magnitudes, for the low lying Pigeon Point area of south-west Tobago. The objective of this research is to develop an understanding of the extent of flooding that these events can ensue on low lying coastal areas that are widespread through the Caribbean under current and future sea level conditions. A two-dimensional hydrodynamic flood model was created for Pigeon Point using the model code LISFLOOD-FP by incorporating topographic data of the terrain and sea bed referenced to mean sea level together with tides. This was used to assess the impact of different storm surge levels on the study area. Storm surge scenarios were computed using information acquired from the Saffir-Simpson hurricane scale which provides an estimate of storm surge height based on the category of hurricane, existing projections of global sea level rise and recorded values of high tide for Pigeon Point. Results indicate that the quantity of area likely to flood, in each surge scenario, increases significantly under future projected global sea level conditions compared to current conditions. The potential implications of this on the local population, island's economy and beach geomorphology are examined. Results obtained were incorporated into a Geographic Information System (GIS) to produce current and future flood maps indicating potential inundation extent based on storm surge height to guide coastal flood management programmes in south-west Tobago. We conclude that greater focus should be placed on implementing flood mitigation measures to protect our coasts and

  3. Onset of slugging criterion based on singular points and stability analyses of transient one-dimensional two-phase flow equations of two-fluid model

    International Nuclear Information System (INIS)

    A two-step approach has been used to obtain a new criterion for the onset of slug formation : (1) In the first step, a more general expression than the existing models for the onset of slug flow criterion has been derived from the analysis of singular points and neutral stability conditions of the transient one-dimensional two-phase flow equations of two-fluid model. (2) In the second step, introducing simplifications and incorporating a parameter into the general expression obtained in the first step to satisfy a number of physical conditions a priori specified, a new simple criterion for the onset of slug flow has been derived. Comparisons of the present model with existing models and experimental data show that the present model agree very closely with Taitel and Dukler's model and experimental data in horizontal pipes. In an inclined pipe (θ=50 deg ), however, the difference between the predictions of the present model and those of existing models is appreciably large and the present model gives the best agreement with Ohnuki et al.'s data. 17 refs., 5 figs., 1 tab. (author)

  4. Systèmes d’instruments des opérateurs. Un point de vue pour analyser le rapport aux règles de sécurité

    OpenAIRE

    Vidal-Gomel, Christine

    2014-01-01

    Les opérateurs élaborent et utilisent différents moyens pour gérer les risques professionnels : règles de sécurité, savoir-faire de prudence, pratiques informelles de sécurité. Nous proposons d’analyser cet ensemble de moyens comme un système d’instruments constitué par ces travailleurs au cours de leur expérience professionnelle. Un accident du travail d’un opérateur de maintenance des systèmes électriques est analysé de ce point de vue. Cette approche permet de dépasser le cadre de la viola...

  5. Analyse numérique du problème de déplacement du noyau fondu en soudage par points de tôles à différentes épaisseurs

    Science.gov (United States)

    Benkedda, Y.; Tahar Chaouch, K.; Ibrir, B.

    2005-05-01

    Le soudage par résistance par points est une technique d'assemblage très répandue, en particulier dans l'industrie automobile, parce qu'elle est rapide, fiable et bon marché. Pour cela, la réalisation d'un point de soudure de qualité reste encore une préoccupation de l'industrie, surtout lorsqu'il s'agit de souder des tôles à différentes épaisseurs. Les premiers modèles mathématiques et expérimentaux qui couvrent ces différents aspects, sont principalement dirigés vers les modèles de transfert de chaleur ou vers les phénomènes de surfaces (modèles de surfaces) ; ces derniers, sont un problème d'importance, puisqu'ils interviennent chaque fois qu'un transfert de chaleur s'effectue entre deux solides accolés. Les physiciens ont étudie expérimentalement la réponse de la région de contact de deux solides aux pulsations de courant. Ils ont montré que le contact possède une résistance de resserrement due aux aspérités de surface, et que la température moyenne à l'interface des deux solides sous un chargement uniforme produit un adoucissement local lequel fait augmenter la région de contact. Le but de ce travail est consacré à l'analyse de l'influence des épaisseurs de tôles sur la position du noyau fondu. Expérimentalement, il a été montré que lorsque le rapport des épaisseurs est compris entre 1/1 et 1/10, le noyau fondu se déplace vers la pièce la plus épaisse. Ce phénomène peut s'expliquer à partir d'une étude thermique. Nous proposons donc, de résoudre le problème de transfert thermique transitoire associé au processus de soudage par points moyennant une méthode numérique. Ce modèle est capable de prédire l'évolution du noyau fondu en fonction des paramètres du procédé à savoir l'intensité de soudage et temps de soudage, ainsi que la répartition thermique en chaque point de l'assemblage.

  6. Analysing EWviews

    DEFF Research Database (Denmark)

    Jelsøe, Erling; Jæger, Birgit

    2015-01-01

    When analysing the results of a European wide citizen consultation on sustainable consumption it is necessary to take a number of issues into account, such as the question of representativity and tensions between national and European identies and between consumer and Citizen orientations regarding...

  7. Massive Collection of Full-Length Complementary DNA Clones and Microarray Analyses:. Keys to Rice Transcriptome Analysis

    Science.gov (United States)

    Kikuchi, Shoshi

    2009-02-01

    Completion of the high-precision genome sequence analysis of rice led to the collection of about 35,000 full-length cDNA clones and the determination of their complete sequences. Mapping of these full-length cDNA sequences has given us information on (1) the number of genes expressed in the rice genome; (2) the start and end positions and exon-intron structures of rice genes; (3) alternative transcripts; (4) possible encoded proteins; (5) non-protein-coding (np) RNAs; (6) the density of gene localization on the chromosome; (7) setting the parameters of gene prediction programs; and (8) the construction of a microarray system that monitors global gene expression. Manual curation for rice gene annotation by using mapping information on full-length cDNA and EST assemblies has revealed about 32,000 expressed genes in the rice genome. Analysis of major gene families, such as those encoding membrane transport proteins (pumps, ion channels, and secondary transporters), along with the evolution from bacteria to higher animals and plants, reveals how gene numbers have increased through adaptation to circumstances. Family-based gene annotation also gives us a new way of comparing organisms. Massive amounts of data on gene expression under many kinds of physiological conditions are being accumulated in rice oligoarrays (22K and 44K) based on full-length cDNA sequences. Cluster analyses of genes that have the same promoter cis-elements, that have similar expression profiles, or that encode enzymes in the same metabolic pathways or signal transduction cascades give us clues to understanding the networks of gene expression in rice. As a tool for that purpose, we recently developed "RiCES", a tool for searching for cis-elements in the promoter regions of clustered genes.

  8. Tipping Point

    Medline Plus

    Full Text Available ... en español Blog About OnSafety CPSC Stands for Safety The Tipping Point Home > 60 Seconds of Safety (Videos) > The Tipping Point The Tipping Point by ... danger death electrical fall furniture head injury product safety television tipover tv Watch the video in Adobe ...

  9. 安徽省化肥面源污染环境风险分析%Environmental Risk Analyses of Non-Point Source Pollution From Fertilization in Anhui Province, China

    Institute of Scientific and Technical Information of China (English)

    刘钦普

    2015-01-01

    Anhui, being one of the major agricultural provinces in China, is faced with a series of environmental problems, of which non-point source pollution from chemical fertilizationin farmlands is one. In order to better understand the potential threats of fertilization to the rural ecosystem and agricultural sustainable development in Anhui Province, Chi-na, environmental risk assessment ( ERA ) of fertilization was conducted. An index model for environmental risk assessment of non-point source pollution from fertilization was established and spatio-temporal variation of fertilization and environmental risk of non-point source pollution from fertilization in Anhui was analyzed. Results show that in Anhui of 2013, the total chemical fertilization intensity was 853. 6 kg·hm-2 on average; the environmental risk index of the non-point source pollution from chemical fertilization was 0. 72; the total environmental pollution risk ranked moderate; N :P : K in fertilization was 1 : 0. 52 : 0. 49;the environmental risk index of N, P and K single-element fertilizers was 0. 72, 0. 78 and 0. 65, respectively;the environmental risk of the three kinds of single-element fertilizers ranked moderate, seri-ous and light, respectively;and their spatio-temporal distribution displayed an obvious aggregation effect. In the 16 prefec-ture-leveled cities, the problem of excessive fertilizationin farmlands existed universally. Though varying sharply from region to region in severity, it displayed a specific pattern of distribution. Environmental risk was very serious in Huainan, serious in Bengbu, Lu′an, Wuhu and Tongling, and moderate in the rest of the cities.%为了深入了解化肥施用对农村生态环境的威胁,在综合考虑化肥施用强度、效率、生态安全标准、环境效应权数及作物复种指数等多种因素的基础上,构建了化肥面源污染环境风险评价指数模型,对安徽省化肥施用时空分异与面源污染环境风险进行研究.

  10. Tipping Point

    Medline Plus

    Full Text Available ... Tipping Point by CPSC Blogger September 22 appliance child Childproofing CPSC danger death electrical fall furniture head ... TV falls with about the same force as child falling from the third story of a building. ...

  11. Tipping Point

    Medline Plus

    Full Text Available ... Tipping Point by CPSC Blogger September 22 appliance child Childproofing CPSC danger death electrical fall furniture head ... see news reports about horrible accidents involving young children and furniture, appliance and tv tip-overs. The ...

  12. Turning Point

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Moves from the United States and North Korea give new impetus to nuclear disablement and U.S.-North Korea ties The tense situation surrounding denu-clearization on the Korean Peninsula has reached a turning point. On

  13. Comparative genome sequencing of drosophila pseudoobscura: Chromosomal, gene and cis-element evolution

    Energy Technology Data Exchange (ETDEWEB)

    Richards, Stephen; Liu, Yue; Bettencourt, Brian R.; Hradecky, Pavel; Letovsky, Stan; Nielsen, Rasmus; Thornton, Kevin; Todd, Melissa J.; Chen, Rui; Meisel, Richard P.; Couronne, Olivier; Hua, Sujun; Smith, Mark A.; Bussemaker, Harmen J.; van Batenburg, Marinus F.; Howells, Sally L.; Scherer, Steven E.; Sodergren, Erica; Matthews, Beverly B.; Crosby, Madeline A.; Schroeder, Andrew J.; Ortiz-Barrientos, Daniel; Rives, Catherine M.; Metzker, Michael L.; Muzny, Donna M.; Scott, Graham; Steffen, David; Wheeler, David A.; Worley, Kim C.; Havlak, Paul; Durbin, K. James; Egan, Amy; Gill, Rachel; Hume, Jennifer; Morgan, Margaret B.; Miner, George; Hamilton, Cerissa; Huang, Yanmei; Waldron, Lenee; Verduzco, Daniel; Blankenburg, Kerstin P.; Dubchak, Inna; Noor, Mohamed A.F.; Anderson, Wyatt; White, Kevin P.; Clark, Andrew G.; Schaeffer, Stephen W.; Gelbart, William; Weinstock, George M.; Gibbs, Richard A.

    2004-04-01

    The genome sequence of a second fruit fly, D. pseudoobscura, presents an opportunity for comparative analysis of a primary model organism D. melanogaster. The vast majority of Drosophila genes have remained on the same arm, but within each arm gene order has been extensively reshuffled leading to the identification of approximately 1300 syntenic blocks. A repetitive sequence is found in the D. pseudoobscura genome at many junctions between adjacent syntenic blocks. Analysis of this novel repetitive element family suggests that recombination between offset elements may have given rise to many paracentric inversions, thereby contributing to the shuffling of gene order in the D. pseudoobscura lineage. Based on sequence similarity and synteny, 10,516 putative orthologs have been identified as a core gene set conserved over 35 My since divergence. Genes expressed in the testes had higher amino acid sequence divergence than the genome wide average consistent with the rapid evolution of sex-specific proteins. Cis-regulatory sequences are more conserved than control sequences between the species but the difference is slight, suggesting that the evolution of cis-regulatory elements is flexible. Overall, a picture of repeat mediated chromosomal rearrangement, and high co-adaptation of both male genes and cis-regulatory sequences emerges as important themes of genome divergence between these species of Drosophila.

  14. Insight into GATA1 transcriptional activity through interrogation of cis elements disrupted in human erythroid disorders.

    Science.gov (United States)

    Wakabayashi, Aoi; Ulirsch, Jacob C; Ludwig, Leif S; Fiorini, Claudia; Yasuda, Makiko; Choudhuri, Avik; McDonel, Patrick; Zon, Leonard I; Sankaran, Vijay G

    2016-04-19

    Whole-exome sequencing has been incredibly successful in identifying causal genetic variants and has revealed a number of novel genes associated with blood and other diseases. One limitation of this approach is that it overlooks mutations in noncoding regulatory elements. Furthermore, the mechanisms by which mutations in transcriptionalcis-regulatory elements result in disease remain poorly understood. Here we used CRISPR/Cas9 genome editing to interrogate three such elements harboring mutations in human erythroid disorders, which in all cases are predicted to disrupt a canonical binding motif for the hematopoietic transcription factor GATA1. Deletions of as few as two to four nucleotides resulted in a substantial decrease (>80%) in target gene expression. Isolated deletions of the canonical GATA1 binding motif completely abrogated binding of the cofactor TAL1, which binds to a separate motif. Having verified the functionality of these three GATA1 motifs, we demonstrate strong evolutionary conservation of GATA1 motifs in regulatory elements proximal to other genes implicated in erythroid disorders, and show that targeted disruption of such elements results in altered gene expression. By modeling transcription factor binding patterns, we show that multiple transcription factors are associated with erythroid gene expression, and have created predictive maps modeling putative disruptions of their binding sites at key regulatory elements. Our study provides insight into GATA1 transcriptional activity and may prove a useful resource for investigating the pathogenicity of noncoding variants in human erythroid disorders. PMID:27044088

  15. Human Papillomavirus Type 18 cis-Elements Crucial for Segregation and Latency.

    Directory of Open Access Journals (Sweden)

    Mart Ustav

    Full Text Available Stable maintenance replication is characteristic of the latency phase of HPV infection, during which the viral genomes are actively maintained as extrachromosomal genetic elements in infected proliferating basal keratinocytes. Active replication in the S-phase and segregation of the genome into daughter cells in mitosis are required for stable maintenance replication. Most of our knowledge about papillomavirus genome segregation has come from studies of bovine papillomavirus type 1 (BPV-1, which have demonstrated that the E2 protein cooperates with cellular trans-factors and that E2 binding sites act as cis-regulatory elements in the viral genome that are essential for the segregation process. However, the genomic organization of the regulatory region in HPVs, and the properties of the viral proteins are different from those of their BPV-1 counterparts. We have designed a segregation assay for HPV-18 and used it to demonstrate that the E2 protein performs segregation in combination with at least two E2 binding sites. The cooperative binding of the E2 protein to two E2 binding sites is a major determinant of HPV-18 genome segregation, as demonstrated by the change in spacing between adjacent binding sites #1 and #2 in the HPV-18 Upstream Regulatory Region (URR. Duplication or triplication of the natural 4 bp 5'-CGGG-3' spacer between the E2 binding sites increased the cooperative binding of the E2 molecules as well as E2-dependent segregation. Removal of any spacing between these sites eliminated cooperative binding of the E2 protein and disabled segregation of the URR and HPV-18 genome. Transfer of these configurations of the E2 binding sites into viral genomes confirmed the role of the E2 protein and binding sites #1 and #2 in the segregation process. Additional analysis demonstrated that these sites also play an important role in the transcriptional regulation of viral gene expression from different HPV-18 promoters.

  16. Human Papillomavirus Type 18 cis-Elements Crucial for Segregation and Latency.

    Science.gov (United States)

    Ustav, Mart; Castaneda, Fernando Rodriguez; Reinson, Tormi; Männik, Andres; Ustav, Mart

    2015-01-01

    Stable maintenance replication is characteristic of the latency phase of HPV infection, during which the viral genomes are actively maintained as extrachromosomal genetic elements in infected proliferating basal keratinocytes. Active replication in the S-phase and segregation of the genome into daughter cells in mitosis are required for stable maintenance replication. Most of our knowledge about papillomavirus genome segregation has come from studies of bovine papillomavirus type 1 (BPV-1), which have demonstrated that the E2 protein cooperates with cellular trans-factors and that E2 binding sites act as cis-regulatory elements in the viral genome that are essential for the segregation process. However, the genomic organization of the regulatory region in HPVs, and the properties of the viral proteins are different from those of their BPV-1 counterparts. We have designed a segregation assay for HPV-18 and used it to demonstrate that the E2 protein performs segregation in combination with at least two E2 binding sites. The cooperative binding of the E2 protein to two E2 binding sites is a major determinant of HPV-18 genome segregation, as demonstrated by the change in spacing between adjacent binding sites #1 and #2 in the HPV-18 Upstream Regulatory Region (URR). Duplication or triplication of the natural 4 bp 5'-CGGG-3' spacer between the E2 binding sites increased the cooperative binding of the E2 molecules as well as E2-dependent segregation. Removal of any spacing between these sites eliminated cooperative binding of the E2 protein and disabled segregation of the URR and HPV-18 genome. Transfer of these configurations of the E2 binding sites into viral genomes confirmed the role of the E2 protein and binding sites #1 and #2 in the segregation process. Additional analysis demonstrated that these sites also play an important role in the transcriptional regulation of viral gene expression from different HPV-18 promoters. PMID:26288015

  17. Point Lepreau

    International Nuclear Information System (INIS)

    This brief pamphlet gives general information about the station. The Point Lepreau Nuclear Generating Station consists of a single CANDU 600 unit with a total net capacity of 630,000 kilowatts. This single reactor, the first nuclear installation in Atlantic Canada, is expected to supply about 20% of New Brunswick's electrical energy during the 1980's. The station is located on the Lepreau peninsula, overlooking the Bay of Fundy, 40 km southwest of Saint John on Route 790, off Highway 1. Construction of Point Lepreau began in May 1975 and was completed late in 1981. At the peak of construction activity in 1979, 3,300 workers were employed on the project. First power was produced in September 1982 and Lepreau began commercial operation early in 1983. Point Lepreau was built with provision for an additional 600 MW unit on the site and is essentially a duplicate of CANDU 600 reactors in Quebec, Argentina and Korea. Although started third, Lepreau was the first of these CANDU's in Canada and abroad to be licensed for operation, the first to achieve criticality (start-up), and the first to begin commercial operation. Lepreau is owned and operated by New Brunswick Power

  18. Identification, duplication, evolution and expression analyses of caleosins in Brassica plants and Arabidopsis subspecies.

    Science.gov (United States)

    Shen, Yue; Liu, Mingzhe; Wang, Lili; Li, Zhuowei; Taylor, David C; Li, Zhixi; Zhang, Meng

    2016-04-01

    Caleosins are a class of Ca(2+) binding proteins that appear to be ubiquitous in plants. Some of the main proteins embedded in the lipid monolayer of lipid droplets, caleosins, play critical roles in the degradation of storage lipids during germination and in lipid trafficking. Some of them have been shown to have histidine-dependent peroxygenase activity, which is believed to participate in stress responses in Arabidopsis. In the model plant Arabidopsis thaliana, caleosins have been examined extensively. However, little is known on a genome-wide scale about these proteins in other members of the Brassicaceae. In this study, 51 caleosins in Brassica plants and Arabidopsis lyrata were investigated and analyzed in silico. Among them, 31 caleosins, including 7 in A. lyrata, 11 in Brassica oleracea and 13 in Brassica napus, are herein identified for the first time. Segmental duplication was the main form of gene expansion. Alignment, motif and phylogenetic analyses showed that Brassica caleosins belong to either the H-family or the L-family with different motif structures and physicochemical properties. Our findings strongly suggest that L-caleosins are evolved from H-caleosins. Predicted phosphorylation sites were differentially conserved in H-caleosin and L-caleosins, respectively. 'RY-repeat' elements and phytohormone-related cis-elements were identified in different caleosins, which suggest diverse physiological functions. Gene structure analysis indicated that most caleosins (38 out of 44) contained six exons and five introns and their intron phases were highly conserved. Structurally integrated caleosins, such as BrCLO3-3 and BrCLO4-2, showed high expression levels and may have important roles. Some caleosins, such as BrCLO2 and BoCLO8-2, lost motifs of the calcium binding domain, proline knot, potential phosphorylation sites and haem-binding sites. Combined with their low expression, it is suggested that these caleosins may have lost function. PMID:26786939

  19. The Development of Protein Microarrays and Their Applications in DNA-Protein and Protein-Protein Interaction Analyses of Arabidopsis Transcription Factors

    Institute of Scientific and Technical Information of China (English)

    Wei Gong; Kun He; Mike Covington; S.R Dinesh-Kumar; Michael Snyder; Stacey L.Harmer; Yu-Xian Zhu; Xing Wang Deng

    2008-01-01

    We used our collection of Arabidopsis transcription factor (TF) ORFeome clones to constructprotein microarrays containing as many as 802 TF proteins. These protein microarrays were used for both protein-DNA and proteinprotein interaction analyses. For protein-DNA interaction studies, we examined AP2/ERF family TFs and their cognate cis-elements. By careful comparison of the DNA-binding specificity of 13 TFs on the protein microarray with previous non-microarray data, we showed that protein microarrays provide an efficient and high throughput tool for genome-wide analysis of TF-DNA interactions. This microarray protein-DNA interaction analysis allowed us to derive a comprehensive view of DNA-binding profiles of AP2/ERF family proteins in Arabidopsis. It also revealed four TFs that bound the EE (evening element) and had the expected phased gene expression under clock-regulation, thus providing a basis for further functional analysis of their roles in clock regulation of gene expression. We also developed procedures for detecting protein interactions using this TF protein microarray and discovered four novel partners that interact with HY5, which can be validated by yeast two-hybrid assays. Thus, plant TF protein microarrays offer an attractive high-throughput alternative to traditional techniques for TF functional characterization on a global scale.

  20. Cloning and Molecular Analyses of Hop Transcription Factors

    Czech Academy of Sciences Publication Activity Database

    Matoušek, Jaroslav; Kocábek, Tomáš; Škopek, Josef; Orctová, Lidmila; Stehlík, Jan; Füssy, Zoltán; Patzak, J.; Krofta, K.; Maloukh, L.; Roldán-Ruiz, I.; Heyerick, A.; De Keukeleire, D.

    Ghent : ISHA Acta Horticulturae, 2009 - (DeKeukeleire, D.; Hummer, K.; Heyerick, A.), s. 41-48 ISBN 978-90-6605-722-7. ISSN 0567-7572. [ISHS International Humulus Symposium /2./. Ghent (BE), 01.09.2009-05.09.2009] R&D Projects: GA ČR GA521/08/0740; GA MZe QH81052; GA ČR(CZ) GP521/06/P323 Institutional research plan: CEZ:AV0Z50510513 Keywords : transcription regulators * cis-elements * hop metabolome Subject RIV: EB - Genetics ; Molecular Biology

  1. Mitogenomic analyses of eutherian relationships.

    Science.gov (United States)

    Arnason, U; Janke, A

    2002-01-01

    Reasonably correct phylogenies are fundamental to the testing of evolutionary hypotheses. Here, we present phylogenetic findings based on analyses of 67 complete mammalian mitochondrial (mt) genomes. The analyses, irrespective of whether they were performed at the amino acid (aa) level or on nucleotides (nt) of first and second codon positions, placed Erinaceomorpha (hedgehogs and their kin) as the sister group of remaining eutherians. Thus, the analyses separated Erinaceomorpha from other traditional lipotyphlans (e.g., tenrecs, moles, and shrews), making traditional Lipotyphla polyphyletic. Both the aa and nt data sets identified the two order-rich eutherian clades, the Cetferungulata (comprising Pholidota, Carnivora, Perissodactyla, Artiodactyla, and Cetacea) and the African clade (Tenrecomorpha, Macroscelidea, Tubulidentata, Hyracoidea, Proboscidea, and Sirenia). The study corroborated recent findings that have identified a sister-group relationship between Anthropoidea and Dermoptera (flying lemurs), thereby making our own order, Primates, a paraphyletic assembly. Molecular estimates using paleontologically well-established calibration points, placed the origin of most eutherian orders in Cretaceous times, 70-100 million years before present (MYBP). The same estimates place all primate divergences much earlier than traditionally believed. For example, the divergence between Homo and Pan is estimated to have taken place approximately 10 MYBP, a dating consistent with recent findings in primate paleontology. PMID:12438776

  2. Periodic safety analyses

    International Nuclear Information System (INIS)

    The IAEA Safety Guide 50-SG-S8 devoted to 'Safety Aspects of Foundations of Nuclear Power Plants' indicates that operator of a NPP should establish a program for inspection of safe operation during construction, start-up and service life of the plant for obtaining data needed for estimating the life time of structures and components. At the same time the program should ensure that the safety margins are appropriate. Periodic safety analysis are an important part of the safety inspection program. Periodic safety reports is a method for testing the whole system or a part of the safety system following the precise criteria. Periodic safety analyses are not meant for qualification of the plant components. Separate analyses are devoted to: start-up, qualification of components and materials, and aging. All these analyses are described in this presentation. The last chapter describes the experience obtained for PWR-900 and PWR-1300 units from 1986-1989

  3. Laser Beam Focus Analyser

    DEFF Research Database (Denmark)

    Nielsen, Peter Carøe; Hansen, Hans Nørgaard; Olsen, Flemming Ove;

    2007-01-01

    The quantitative and qualitative description of laser beam characteristics is important for process implementation and optimisation. In particular, a need for quantitative characterisation of beam diameter was identified when using fibre lasers for micro manufacturing. Here the beam diameter limits...... the obtainable features in direct laser machining as well as heat affected zones in welding processes. This paper describes the development of a measuring unit capable of analysing beam shape and diameter of lasers to be used in manufacturing processes. The analyser is based on the principle of a rotating...... mechanical wire being swept through the laser beam at varying Z-heights. The reflected signal is analysed and the resulting beam profile determined. The development comprised the design of a flexible fixture capable of providing both rotation and Z-axis movement, control software including data capture...

  4. Report sensory analyses veal

    OpenAIRE

    Veldman, M.; Schelvis-Smit, A.A.M.

    2005-01-01

    On behalf of a client of Animal Sciences Group, different varieties of veal were analyzed by both instrumental and sensory analyses. The sensory evaluation was performed with a sensory analytical panel in the period of 13th of May and 31st of May, 2005. The three varieties of veal were: young bull, pink veal and white veal. The sensory descriptive analyses show that the three groups Young bulls, pink veal and white veal, differ significantly in red colour for the raw meat as well as the baked...

  5. Impedance analysis of acupuncture points and pathways

    International Nuclear Information System (INIS)

    Investigation of impedance characteristics of acupuncture points from acoustic to radio frequency range is addressed. Discernment and localization of acupuncture points in initial single subject study was unsuccessfully attempted by impedance map technique. Vector impedance analyses determined possible resonant zones in MHz region.

  6. An electronic probe micro-analyser. A linear scan device

    International Nuclear Information System (INIS)

    The Castaing electronic probe micro-analyser makes possible static analysis at successive points. For two years this apparatus has been equipped by its constructor with an automatic device for surface scanning. In order to increase the micro-analyser's efficiency a 'linear' scan device has been incorporated making it possible to obtain semi-quantitative analyses very rapidly. (authors)

  7. Wavelet Analyses and Applications

    Science.gov (United States)

    Bordeianu, Cristian C.; Landau, Rubin H.; Paez, Manuel J.

    2009-01-01

    It is shown how a modern extension of Fourier analysis known as wavelet analysis is applied to signals containing multiscale information. First, a continuous wavelet transform is used to analyse the spectrum of a nonstationary signal (one whose form changes in time). The spectral analysis of such a signal gives the strength of the signal in each…

  8. Probabilistic safety analyses (PSA)

    International Nuclear Information System (INIS)

    The guide shows how the probabilistic safety analyses (PSA) are used in the design, construction and operation of light water reactor plants in order for their part to ensure that the safety of the plant is good enough in all plant operational states

  9. Genome-Wide Evolutionary Characterization and Expression Analyses of WRKY Family Genes in Brachypodium distachyon

    OpenAIRE

    WEN, FENG; Zhu, Hong; Li, Peng; Jiang, Min; Mao, Wenqing; Ong, Chermaine; Chu, Zhaoqing

    2014-01-01

    Members of plant WRKY gene family are ancient transcription factors that function in plant growth and development and respond to biotic and abiotic stresses. In our present study, we have investigated WRKY family genes in Brachypodium distachyon, a new model plant of family Poaceae. We identified a total of 86 WRKY genes from B. distachyon and explored their chromosomal distribution and evolution, domain alignment, promoter cis-elements, and expression profiles. Combining the analysis of phyl...

  10. Characterizing configurations of fire ignition points through spatiotemporal point processes

    Science.gov (United States)

    Comas, C.; Costafreda-Aumedes, S.; Vega-Garcia, C.

    2014-04-01

    Human-caused forest fires are usually regarded as unpredictable but often exhibit trends towards clustering in certain locations and periods. Characterizing such configurations is crucial for understanding spatiotemporal fire dynamics and implementing preventive actions. Our objectives were to analyse the spatiotemporal point configuration and to test for spatiotemporal interaction. We characterized the spatiotemporal structure of 984 fire ignition points in a study area of Galicia, Spain, during 2007-2011 by the K-Ripley's function. Our results suggest the presence of spatiotemporal structures for time lags of less than two years and ignition point distances in the range 0-12 km. Ignition centre points at time lags of less than 100 days are aggregated for any inter-event distance. This cluster structure loses strength as the time lag increases, and at time lags of more than 365 days this cluster structure is not significant for any lag distance. Our results also suggest spatiotemporal interdependencies at time lags of less than 100 days and inter-event distances of less than 10 km. At time lags of up to 365 days spatiotemporal components are independent for any point distance. These results suggest that risk conditions occur locally and are short-lived in this study area.

  11. Possible future HERA analyses

    CERN Document Server

    Geiser, Achim

    2015-01-01

    A variety of possible future analyses of HERA data in the context of the HERA data preservation programme is collected, motivated, and commented. The focus is placed on possible future analyses of the existing $ep$ collider data and their physics scope. Comparisons to the original scope of the HERA programme are made, and cross references to topics also covered by other participants of the workshop are given. This includes topics on QCD, proton structure, diffraction, jets, hadronic final states, heavy flavours, electroweak physics, and the application of related theory and phenomenology topics like NNLO QCD calculations, low-x related models, nonperturbative QCD aspects, and electroweak radiative corrections. Synergies with other collider programmes are also addressed. In summary, the range of physics topics which can still be uniquely covered using the existing data is very broad and of considerable physics interest, often matching the interest of results from colliders currently in operation. Due to well-e...

  12. Statistisk analyse med SPSS

    OpenAIRE

    Linnerud, Kristin; Oklevik, Ove; Slettvold, Harald

    2004-01-01

    Dette notatet har sitt utspring i forelesninger og undervisning for 3.års studenter i økonomi og administrasjon ved høgskolen i Sogn og Fjordane. Notatet er særlig lagt opp mot undervisningen i SPSS i de to kursene ”OR 685 Marknadsanalyse og merkevarestrategi” og ”BD 616 Økonomistyring og analyse med programvare”.

  13. Biomass feedstock analyses

    Energy Technology Data Exchange (ETDEWEB)

    Wilen, C.; Moilanen, A.; Kurkela, E. [VTT Energy, Espoo (Finland). Energy Production Technologies

    1996-12-31

    The overall objectives of the project `Feasibility of electricity production from biomass by pressurized gasification systems` within the EC Research Programme JOULE II were to evaluate the potential of advanced power production systems based on biomass gasification and to study the technical and economic feasibility of these new processes with different type of biomass feed stocks. This report was prepared as part of this R and D project. The objectives of this task were to perform fuel analyses of potential woody and herbaceous biomasses with specific regard to the gasification properties of the selected feed stocks. The analyses of 15 Scandinavian and European biomass feed stock included density, proximate and ultimate analyses, trace compounds, ash composition and fusion behaviour in oxidizing and reducing atmospheres. The wood-derived fuels, such as whole-tree chips, forest residues, bark and to some extent willow, can be expected to have good gasification properties. Difficulties caused by ash fusion and sintering in straw combustion and gasification are generally known. The ash and alkali metal contents of the European biomasses harvested in Italy resembled those of the Nordic straws, and it is expected that they behave to a great extent as straw in gasification. Any direct relation between the ash fusion behavior (determined according to the standard method) and, for instance, the alkali metal content was not found in the laboratory determinations. A more profound characterisation of the fuels would require gasification experiments in a thermobalance and a PDU (Process development Unit) rig. (orig.) (10 refs.)

  14. Possible future HERA analyses

    Energy Technology Data Exchange (ETDEWEB)

    Geiser, Achim

    2015-12-15

    A variety of possible future analyses of HERA data in the context of the HERA data preservation programme is collected, motivated, and commented. The focus is placed on possible future analyses of the existing ep collider data and their physics scope. Comparisons to the original scope of the HERA pro- gramme are made, and cross references to topics also covered by other participants of the workshop are given. This includes topics on QCD, proton structure, diffraction, jets, hadronic final states, heavy flavours, electroweak physics, and the application of related theory and phenomenology topics like NNLO QCD calculations, low-x related models, nonperturbative QCD aspects, and electroweak radiative corrections. Synergies with other collider programmes are also addressed. In summary, the range of physics topics which can still be uniquely covered using the existing data is very broad and of considerable physics interest, often matching the interest of results from colliders currently in operation. Due to well-established data and MC sets, calibrations, and analysis procedures the manpower and expertise needed for a particular analysis is often very much smaller than that needed for an ongoing experiment. Since centrally funded manpower to carry out such analyses is not available any longer, this contribution not only targets experienced self-funded experimentalists, but also theorists and master-level students who might wish to carry out such an analysis.

  15. PRE-1, a cis element sufficient to enhance cone- and rod- specific expression in differentiating zebrafish photoreceptors

    Directory of Open Access Journals (Sweden)

    Hurley James B

    2011-01-01

    Full Text Available Abstract Background Appropriate transcriptional regulation is required for cone photoreceptor development and integrity. To date, only a few cis-regulatory elements that control cone photoreceptor-specific expression have been characterised. The alpha-subunit of cone transducin (TαC is specifically expressed in cone photoreceptors and is required for colour vision. In order to better understand the molecular genetics controlling the initiation of cone photoreceptor-specific expression in vivo, we have utilised zebrafish to identify cis-regulatory elements in the upstream promoter region of the TαC gene. Results A 0.5 kb TαC promoter fragment is sufficient to direct cone-specific expression in transgenic larvae. Within this minimal promoter, we identify photoreceptor regulatory element-1 (PRE-1, a unique 41 bp sequence. PRE-1 specifically binds nuclear factors expressed in ocular tissue. PRE-1 is not required for cone-specific expression directed from a 2.5 kb TαC promoter. However, PRE-1-like sequences, with potential functional redundancy, are located in this 2.5 kb promoter. PRE-1-rho which has the highest sequence and structural homology to PRE-1 is located in the rhodopsin promoter. Surprisingly, PRE-1 and PRE-1-rho are functionally distinct. We demonstrate that PRE-1, but not PRE-1-rho, is sufficient to enhance expression from a heterologous UV cone promoter. PRE-1 is also sufficient to enhance expression from a heterologous rhodopsin promoter without altering its rod photoreceptor specificity. Finally, mutations in consensus E-box and Otx sites prevent PRE-1 from forming complexes with eye nuclear protein and enhancing photoreceptor expression. Conclusions PRE-1 is a novel cis-regulatory module that is sufficient to enhance the initiation of photoreceptor-specific gene expression in differentiating rod and cone photoreceptors.

  16. Comparative genome sequencing of Drosophila pseudoobscura: Chromosomal, gene, and cis-element evolution

    DEFF Research Database (Denmark)

    Richards, Stephen; Liu, Yue; Bettencourt, Brian R.;

    2005-01-01

    years (Myr) since the pseudoobscura/melanogaster divergence. Genes expressed in the testes had higher amino acid sequence divergence than the genome-wide average, consistent with the rapid evolution of sex-specific proteins. Cis-regulatory sequences are more conserved than random and nearby sequences......We have sequenced the genome of a second Drosophila species, Drosophila pseudoobscura, and compared this to the genome sequence of Drosophila melanogaster, a primary model organism. Throughout evolution the vast majority of Drosophila genes have remained on the same chromosome arm, but within each...... between the species-but the difference is slight, suggesting that the evolution of cis-regulatory elements is flexible. Overall, a pattern of repeat-mediated chromosomal rearrangement, and high coadaptation of both male genes and cis-regulatory sequences emerges as important themes of genome divergence...

  17. Molecular dissection of the AGAMOUS control region shows that cis elements for spatial regulation are located intragenically.

    Science.gov (United States)

    Sieburth, L E; Meyerowitz, E M

    1997-03-01

    AGAMOUS (AG) is an Arabidopsis MADS box gene required for the normal development of the internal two whorls of the flower. AG RNA accumulates in distinct patterns early and late in flower development, and several genes have been identified as regulators of AG gene expression based on altered AG RNA accumulation in mutants. To understand AG regulatory circuits, we are now identifying cis regulatory domains by characterizing AG::beta-glucuronidase (GUS) gene fusions. These studies show that a normal AG::GUS staining pattern is conferred by a 9.8-kb region encompassing 6 kb of upstream sequences and 3.8 kb of intragenic sequences. Constructs lacking the 3.8-kb intragenic sequences confer a GUS staining pattern that deviates both spatially and temporally from normal AG expression. The GUS staining patterns in the mutants for the three negative regulators of AG, apetala2, leunig, and curly leaf, showed the predicted change of expression for the construct containing the intragenic sequences, but no significant change was observed for the constructs lacking this intragenic region. These results suggest that intragenic sequences are essential for AG regulation and that these intragenic sequences contain the ultimate target sites for at least some of the known regulatory molecules. PMID:9090880

  18. Meta-analysis of breast cancer microarray studies in conjunction with conserved cis-elements suggest patterns for coordinate regulation

    OpenAIRE

    Lundberg Cathryn; Snøve Ola; Sætrom Pål; Smith David D; Rivas Guillermo E; Glackin Carlotta; Larson Garrett P

    2008-01-01

    Abstract Background Gene expression measurements from breast cancer (BrCa) tumors are established clinical predictive tools to identify tumor subtypes, identify patients showing poor/good prognosis, and identify patients likely to have disease recurrence. However, diverse breast cancer datasets in conjunction with diagnostic clinical arrays show little overlap in the sets of genes identified. One approach to identify a set of consistently dysregulated candidate genes in these tumors is to emp...

  19. Digital differential analysers

    CERN Document Server

    Shilejko, A V; Higinbotham, W

    1964-01-01

    Digital Differential Analysers presents the principles, operations, design, and applications of digital differential analyzers, a machine with the ability to present initial quantities and the possibility of dividing them into separate functional units performing a number of basic mathematical operations. The book discusses the theoretical principles underlying the operation of digital differential analyzers, such as the use of the delta-modulation method and function-generator units. Digital integration methods and the classes of digital differential analyzer designs are also reviewed. The te

  20. Analysing Access Control Specifications

    DEFF Research Database (Denmark)

    Probst, Christian W.; Hansen, René Rydhof

    2009-01-01

    common tool to answer this question, analysis of log files, faces the problem that the amount of logged data may be overwhelming. This problems gets even worse in the case of insider attacks, where the attacker’s actions usually will be logged as permissible, standard actions—if they are logged at all....... Recent events have revealed intimate knowledge of surveillance and control systems on the side of the attacker, making it often impossible to deduce the identity of an inside attacker from logged data. In this work we present an approach that analyses the access control configuration to identify the set...

  1. AMS analyses at ANSTO

    Energy Technology Data Exchange (ETDEWEB)

    Lawson, E.M. [Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW (Australia). Physics Division

    1998-03-01

    The major use of ANTARES is Accelerator Mass Spectrometry (AMS) with {sup 14}C being the most commonly analysed radioisotope - presently about 35 % of the available beam time on ANTARES is used for {sup 14}C measurements. The accelerator measurements are supported by, and dependent on, a strong sample preparation section. The ANTARES AMS facility supports a wide range of investigations into fields such as global climate change, ice cores, oceanography, dendrochronology, anthropology, and classical and Australian archaeology. Described here are some examples of the ways in which AMS has been applied to support research into the archaeology, prehistory and culture of this continent`s indigenous Aboriginal peoples. (author)

  2. AMS analyses at ANSTO

    International Nuclear Information System (INIS)

    The major use of ANTARES is Accelerator Mass Spectrometry (AMS) with 14C being the most commonly analysed radioisotope - presently about 35 % of the available beam time on ANTARES is used for 14C measurements. The accelerator measurements are supported by, and dependent on, a strong sample preparation section. The ANTARES AMS facility supports a wide range of investigations into fields such as global climate change, ice cores, oceanography, dendrochronology, anthropology, and classical and Australian archaeology. Described here are some examples of the ways in which AMS has been applied to support research into the archaeology, prehistory and culture of this continent's indigenous Aboriginal peoples. (author)

  3. Systemdynamisk analyse av vannkraftsystem

    OpenAIRE

    Rydning, Anja

    2007-01-01

    I denne oppgaven er det gjennomført en dynamisk analyse av vannkraftverket Fortun kraftverk. Tre fenomener er særlig vurdert i denne oppgaven: Sjaktsvingninger mellom svingesjakt og magasin, trykkstøt ved turbinen som følge av retardasjonstrykk ved endring i turbinvannføringen og reguleringsstabilitet. Sjaktsvingningene og trykkstøt beregnes analytisk ut fra kontinuitets- og bevegelsesligningen. Modeller av Fortun kraftverk er laget for å beregne trykkstøt og sjaktsvingninger. En modell e...

  4. Attitude stability analyses for small artificial satellites

    International Nuclear Information System (INIS)

    The objective of this paper is to analyze the stability of the rotational motion of a symmetrical spacecraft, in a circular orbit. The equilibrium points and regions of stability are established when components of the gravity gradient torque acting on the spacecraft are included in the equations of rotational motion, which are described by the Andoyer's variables. The nonlinear stability of the equilibrium points of the rotational motion is analysed here by the Kovalev-Savchenko theorem. With the application of the Kovalev-Savchenko theorem, it is possible to verify if they remain stable under the influence of the terms of higher order of the normal Hamiltonian. In this paper, numerical simulations are made for a small hypothetical artificial satellite. Several stable equilibrium points were determined and regions around these points have been established by variations in the orbital inclination and in the spacecraft principal moment of inertia. The present analysis can directly contribute in the maintenance of the spacecraft's attitude

  5. Chapter 5. Safety analyses

    International Nuclear Information System (INIS)

    In 2000 the safety analyses of the Nuclear Regulatory Authority of the Slovak Republic (UJD) were focused on verification of the safety analyses report and probabilistic safety assessment study for NPP V-1 Bohunice after the reconstruction, reviewing of the suggested changes of the Limits and Conditions for NPP V-2 Bohunice and on the assessment of operational events. An important part of work was performed also in solving of scientific and technical tasks appointed within bilateral projects of co-operation between UJD and its international partnerships' organisations, i.e. within international PHARE programme as well as the 5th framework of the European Commission. Verification of safety analyses part of the safety report for NPP V-1 Bohunice after the gradual reconstruction was focused on checking and passing judgement on the completeness of the considered initiating events, safety criteria, input data, adequacy of the used calculation models and also on the overall quality of the submitted documentation. Suitability of the used methodology and the calculation programmes, achieved level of their verification, correctness and interpretation of the results were assessed. The performed review has shown that the checked safety analyses were performed in compliance with the internationally accepted practice, recommendations of UJD and the IAEA. The required level of safety of NPP V-1 Bohunice has been approved. The document with the results and all the findings of the performed review has been prepared. It includes the details of the performed independent calculations, their results and comparison with the results given in the safety report. A special attention was paid to a review of probabilistic safety assessment study of level 1 for NPP Bohunice V-1 after its gradual reconstruction. The probabilistic safety analysis of NPP in full power operation was elaborated in the study and the impact of the gradual reconstruction to the risk decreasing was quantified. The

  6. Characterization and simulation of fate and transport of selected volatile organic compounds in the vicinities of the Hadnot Point Industrial Area and landfill: Chapter A Supplement 6 in Analyses and historical reconstruction of groundwater flow, contaminant fate and transport, and distribution of drinking water within the service areas of the Hadnot Point and Holcomb Boulevard Water Treatment Plants and vicinities, U.S. Marine Corps Base Camp Lejeune, North Carolina

    Science.gov (United States)

    Jones, L. Elliott; Suárez-Soto, René J.; Anderson, Barbara A.; Maslia, Morris L.

    2013-01-01

    This supplement of Chapter A (Supplement 6) describes the reconstruction (i.e. simulation) of historical concentrations of tetrachloroethylene (PCE), trichloroethylene (TCE), and benzene3 in production wells supplying water to the Hadnot Base (USMCB) Camp Lejeune, North Carolina (Figure S6.1). A fate and transport model (i.e., MT3DMS [Zheng and Wang 1999]) was used to simulate contaminant migration from source locations through the groundwater system and to estimate mean contaminant concentrations in water withdrawn from water-supply wells in the vicinity of the Hadnot Point Industrial Area (HPIA) and the Hadnot Point landfill (HPLF) area.4 The reconstructed contaminant concentrations were subsequently input into a flow-weighted, materials mass balance (mixing) model (Masters 1998) to estimate monthly mean concentrations of the contaminant in finished water 5 at the HPWTP (Maslia et al. 2013). The calibrated fate and transport models described herein were based on and used groundwater velocities derived from groundwater-flow models that are described in Suárez-Soto et al. (2013). Information data pertinent to historical operations of water-supply wells are described in Sautner et al. (2013) and Telci et al. (2013).

  7. Uncertainty Analyses and Strategy

    International Nuclear Information System (INIS)

    The DOE identified a variety of uncertainties, arising from different sources, during its assessment of the performance of a potential geologic repository at the Yucca Mountain site. In general, the number and detail of process models developed for the Yucca Mountain site, and the complex coupling among those models, make the direct incorporation of all uncertainties difficult. The DOE has addressed these issues in a number of ways using an approach to uncertainties that is focused on producing a defensible evaluation of the performance of a potential repository. The treatment of uncertainties oriented toward defensible assessments has led to analyses and models with so-called ''conservative'' assumptions and parameter bounds, where conservative implies lower performance than might be demonstrated with a more realistic representation. The varying maturity of the analyses and models, and uneven level of data availability, result in total system level analyses with a mix of realistic and conservative estimates (for both probabilistic representations and single values). That is, some inputs have realistically represented uncertainties, and others are conservatively estimated or bounded. However, this approach is consistent with the ''reasonable assurance'' approach to compliance demonstration, which was called for in the U.S. Nuclear Regulatory Commission's (NRC) proposed 10 CFR Part 63 regulation (64 FR 8640 [DIRS 101680]). A risk analysis that includes conservatism in the inputs will result in conservative risk estimates. Therefore, the approach taken for the Total System Performance Assessment for the Site Recommendation (TSPA-SR) provides a reasonable representation of processes and conservatism for purposes of site recommendation. However, mixing unknown degrees of conservatism in models and parameter representations reduces the transparency of the analysis and makes the development of coherent and consistent probability statements about projected repository

  8. On Partitioning Colored Points

    CERN Document Server

    Toda, Takahisa

    2010-01-01

    P. Kirchberger proved that, for a finite subset $X$ of $\\mathbb{R}^{d}$ such that each point in $X$ is painted with one of two colors, if every $d+2$ or fewer points in $X$ can be separated along the colors, then all the points in $X$ can be separated along the colors. In this paper, we show a more colorful theorem.

  9. APROS nuclear plant analyser

    International Nuclear Information System (INIS)

    The paper describes the build-up of the Loviisa plant primary circuit model using graphical user interface and generic components. The secondary circuit model of Loviisa is constructed in the same manner. The entire power plant model thus obtained is used for the calculation of two example transients. These examples originate from the Loviisa 2 unit dynamical tests in 1980. The Modular Plant Analyser results are compared with the Loviisa Unit 2 measurement data. This comparison indicates good agreement with the data. The present work has been performed using the Alliant FX/40 minisupercomputer. With this computer the Loviisa model fulfills at present the real-time requirement with 0.5 second timestep. (orig./DG)

  10. EEG analyses with SOBI.

    Energy Technology Data Exchange (ETDEWEB)

    Glickman, Matthew R.; Tang, Akaysha (University of New Mexico, Albuquerque, NM)

    2009-02-01

    The motivating vision behind Sandia's MENTOR/PAL LDRD project has been that of systems which use real-time psychophysiological data to support and enhance human performance, both individually and of groups. Relevant and significant psychophysiological data being a necessary prerequisite to such systems, this LDRD has focused on identifying and refining such signals. The project has focused in particular on EEG (electroencephalogram) data as a promising candidate signal because it (potentially) provides a broad window on brain activity with relatively low cost and logistical constraints. We report here on two analyses performed on EEG data collected in this project using the SOBI (Second Order Blind Identification) algorithm to identify two independent sources of brain activity: one in the frontal lobe and one in the occipital. The first study looks at directional influences between the two components, while the second study looks at inferring gender based upon the frontal component.

  11. Point cloud densification

    OpenAIRE

    Forsman, Mona

    2010-01-01

    Several automatic methods exist for creating 3D point clouds extracted from 2D photos. In manycases, the result is a sparse point cloud, unevenly distributed over the scene.After determining the coordinates of the same point in two images of an object, the 3D positionof that point can be calculated using knowledge of camera data and relative orientation. A model created from a unevenly distributed point clouds may loss detail and precision in thesparse areas. The aim of this thesis is to stud...

  12. Dual Affine invariant points

    OpenAIRE

    Meyer, Mathieu; Schuett, Carsten; Werner, Elisabeth M.

    2013-01-01

    An affine invariant point on the class of convex bodies in R^n, endowed with the Hausdorff metric, is a continuous map p which is invariant under one-to-one affine transformations A on R^n, that is, p(A(K))=A(p(K)). We define here the new notion of dual affine point q of an affine invariant point p by the formula q(K^{p(K)})=p(K) for every convex body K, where K^{p(K)} denotes the polar of K with respect to p(K). We investigate which affine invariant points do have a dual point, whether this ...

  13. Point specificity in acupuncture

    Directory of Open Access Journals (Sweden)

    Choi Emma M

    2012-02-01

    Full Text Available Abstract The existence of point specificity in acupuncture is controversial, because many acupuncture studies using this principle to select control points have found that sham acupoints have similar effects to those of verum acupoints. Furthermore, the results of pain-related studies based on visual analogue scales have not supported the concept of point specificity. In contrast, hemodynamic, functional magnetic resonance imaging and neurophysiological studies evaluating the responses to stimulation of multiple points on the body surface have shown that point-specific actions are present. This review article focuses on clinical and laboratory studies supporting the existence of point specificity in acupuncture and also addresses studies that do not support this concept. Further research is needed to elucidate the point-specific actions of acupuncture.

  14. Analysing ESP Texts, but How?

    Directory of Open Access Journals (Sweden)

    Borza Natalia

    2015-03-01

    Full Text Available English as a second language (ESL teachers instructing general English and English for specific purposes (ESP in bilingual secondary schools face various challenges when it comes to choosing the main linguistic foci of language preparatory courses enabling non-native students to study academic subjects in English. ESL teachers intending to analyse English language subject textbooks written for secondary school students with the aim of gaining information about what bilingual secondary school students need to know in terms of language to process academic textbooks cannot avoiding deal with a dilemma. It needs to be decided which way it is most appropriate to analyse the texts in question. Handbooks of English applied linguistics are not immensely helpful with regard to this problem as they tend not to give recommendation as to which major text analytical approaches are advisable to follow in a pre-college setting. The present theoretical research aims to address this lacuna. Respectively, the purpose of this pedagogically motivated theoretical paper is to investigate two major approaches of ESP text analysis, the register and the genre analysis, in order to find the more suitable one for exploring the language use of secondary school subject texts from the point of view of an English as a second language teacher. Comparing and contrasting the merits and limitations of the two contrastive approaches allows for a better understanding of the nature of the two different perspectives of text analysis. The study examines the goals, the scope of analysis, and the achievements of the register perspective and those of the genre approach alike. The paper also investigates and reviews in detail the starkly different methods of ESP text analysis applied by the two perspectives. Discovering text analysis from a theoretical and methodological angle supports a practical aspect of English teaching, namely making an informed choice when setting out to analyse

  15. Attainability of Boundary Points under Reinforcement Learning

    OpenAIRE

    Ed Hopkins; Martin Posch

    2003-01-01

    This paper investigates the properties of the most common form of reinforcement learning (the "basic model" of Erev and Roth, American Economic Review, 88, 848-881, 1998). Stochastic approximation theory has been used to analyse the local stability of fixed points under this learning process. However, as we show, when such points are on the boundary of the state space, for example, pure strategy equilibria, standard results from the theory of stochastic approximation do not apply. We offer wh...

  16. Properties of residuals for spatial point processes

    DEFF Research Database (Denmark)

    Baddeley, A.; Møller, Jesper; Pakes, A.G.

    For any point process in $R^d$ that has a Papangelou conditional intensity $lambda$, we define a random measure of ‘innovations’ which has mean zero. When the point process model parameters are estimated from data, there is an analogous random measure of ‘residuals’. We analyse properties of the...... innovations and residuals, including first and second moments, conditional independence, a martingale property, lack of correlation, and marginal distributions....

  17. Proving Fixed Points

    OpenAIRE

    Grall, Hervé

    2010-01-01

    We propose a method to characterize the fixed points described in Tarski's theorem for complete lattices. The method is deductive: the least and greatest fixed points are "proved" in some inference system defined from deduction rules. We also apply the method to two other fixed point theorems, a generalization of Tarski's theorem to chain-complete posets and Bourbaki-Witt's theorem. Finally, we compare the method with the traditional iterative method resorting to ordinals and the original imp...

  18. Arctic Climate Tipping Points

    OpenAIRE

    Lenton, Timothy M.

    2012-01-01

    There is widespread concern that anthropogenic global warming will trigger Arctic climate tipping points. The Arctic has a long history of natural, abrupt climate changes, which together with current observations and model projections, can help us to identify which parts of the Arctic climate system might pass future tipping points. Here the climate tipping points are defined, noting that not all of them involve bifurcations leading to irreversible change. Past abrupt climate changes in the A...

  19. Publication point indicators

    DEFF Research Database (Denmark)

    Elleby, Anita; Ingwersen, Peter

    2010-01-01

    novel publication point indicators (PPIs) that are formalized and exemplified. Two diachronic citation windows are applied: 2006-07 and 2006-08. Web of Science (WoS) as well as Google Scholar (GS) are applied to observe the cite delay and citedness for the different document types published by DIIS......, journal articles, book chapters/conference papers and monographs. Journal Crown Indicator (JCI) calculations was based on WoS. Three PPIs are proposed: the Publication Point Ratio (PPR), which measures the sum of obtained publication points over the sum of the ideal points for the same set of documents...

  20. Ultrasensitive flow cytometric analyses

    Energy Technology Data Exchange (ETDEWEB)

    Jett, J.H.; Cram, L.S.; Keller, R.A.; Martin, J.C.; Saunders, G.C.; Sklar, L.A.; Steinkamp, J.A.

    1993-01-01

    New techniques and approaches to cellular analysis being developed at the Los Alamos National Flow Cytometry Resource can be divided into those that improve sensitivity and those that move the technology into new areas by refining existing approaches. An example of the first category is a flow cytometric system capable of measuring the phase shift of fluorescence emitted by fluorophors bound to cells is being assembled. This phase sensitive cytometer is be capable of quantifying fluorescence life time on a cell-by-cell basis as well as using the phase sensitive detection to separate fluorescence emissions that overlap spectrally but have different lifetimes. A Fourier transform flow cytometer capable of measuring the fluorescence emission spectrum of individual labeled cells at rates approaching several hundred per second is also in the new technology category. The current implementation is capable of resolving the visible region of the spectrum into 8 bands. With this instrument, it is possible to resolve the contributions of fluorophors with overlapping emission spectra and to determine the emission spectra of dyes such as calcium concentration indicators that are sensitive to the physiological environment. Flow cytometric techniques have been refined to the point that it is possible to detect individual fluorescent molecules in solution as they flow past a laser beam. This capability has lead to a rapid DNA sequencing project. The goal of the project is to develop a technique that is capable of sequencing long strands of DNA (40,000 kb) at a rate of between 100 and 1,000 bases per second.

  1. Biodégradation de matériaux polymères à usage agricole : Etude et mise au point d'une nouvelle méthode de test, analyse des produits de dégradation et impact environnemental

    OpenAIRE

    Grima, S.

    2002-01-01

    The issues associated with solid waste continuous increase, impacting the environment as well as regulations about non-ultimate waste created a real interest in biodegradable polymer materials. Before using intensively these materials, it is necessary to check that they are harmless to the environment. To achieve this objective, analyses on by-products and residues resulting from biodegradation were performed. A thorough study on agricultural plastic films was conducted. First, a biodegradati...

  2. Indexing Moving Points

    DEFF Research Database (Denmark)

    Agarwal, Pankaj K.; Arge, Lars Allan; Erickson, Jeff

    2003-01-01

    We propose three indexing schemes for storing a set S of N points in the plane, each moving along a linear trajectory, so that any query of the following form can be answered quickly: Given a rectangle R and a real value t, report all K points of S that lie inside R at time t. We first present an...

  3. Model Breaking Points Conceptualized

    Science.gov (United States)

    Vig, Rozy; Murray, Eileen; Star, Jon R.

    2014-01-01

    Current curriculum initiatives (e.g., National Governors Association Center for Best Practices and Council of Chief State School Officers 2010) advocate that models be used in the mathematics classroom. However, despite their apparent promise, there comes a point when models break, a point in the mathematical problem space where the model cannot,…

  4. Sunspot Bright Points

    CERN Document Server

    Choudhary, Debi Prasad

    2010-01-01

    We used the flux calibrated images through the Broad Band Filter Imager and Stokes Polarimeter data obtained with the Solar Optical Telescope onboard the Hinode spacecraft to study the properties of bright points in and around the sunspots. The well isolated bright points were selected and classified as umbral dot, peripheral umbral dot, penumbral grains and G-band bright point depending on their location. Most of the bright points are smaller than about 150 km. The larger points are mostly associated with the penumbral features. The bright points are not uniformly distributed over the umbra but preferentially located around the penumbral boundary and in the fast decaying parts of umbra. The color temperature of the bright points, derived using the continuum irradiance, are in the range of 4600 K to 6600 K with cooler ones located in the umbra. The temperature increases as a function of distance from the center to outside. The G-band, CN-band and CaII H flux of the bright points as a function of their blue ba...

  5. Severe Accident Recriticality Analyses (SARA)

    International Nuclear Information System (INIS)

    Recriticality in a BWR has been studied for a total loss of electric power accident scenario. In a BWR, the B4C control rods would melt and relocate from the core before the fuel during core uncovery and heat-up. If electric power returns during this time-window unborated water from ECCS systems will start to reflood the partly control rod free core. Recriticality might take place for which the only mitigating mechanisms are the Doppler effect and void formation. In order to assess the impact of recriticality on reactor safety, including accident management measures, the following issues have been investigated in the SARA project: 1. the energy deposition in the fuel during super-prompt power burst, 2. the quasi steady-state reactor power following the initial power burst and 3. containment response to elevated quasi steady-state reactor power. The approach was to use three computer codes and to further develop and adapt them for the task. The codes were SIMULATE-3K, APROS and RECRIT. Recriticality analyses were carried out for a number of selected reflooding transients for the Oskarshamn 3 plant in Sweden with SIMULATE-3K and for the Olkiluoto 1 plant in Finland with all three codes. The core state initial and boundary conditions prior to recriticality have been studied with the severe accident codes SCDAP/RELAP5, MELCOR and MAAP4. The results of the analyses show that all three codes predict recriticality - both superprompt power bursts and quasi steady-state power generation - for the studied range of parameters, i. e. with core uncovery and heat-up to maximum core temperatures around 1800 K and water flow rates of 45 kg/s to 2000 kg/s injected into the downcomer. Since the recriticality takes place in a small fraction of the core the power densities are high which results in large energy deposition in the fuel during power burst in some accident scenarios. The highest value, 418 cal/g, was obtained with SIMULATE-3K for an Oskarshamn 3 case with reflooding rate

  6. Severe Accident Recriticality Analyses (SARA)

    Energy Technology Data Exchange (ETDEWEB)

    Frid, W. [Swedish Nuclear Power Inspectorate, Stockholm (Sweden); Hoejerup, F. [Risoe National Lab. (Denmark); Lindholm, I.; Miettinen, J.; Puska, E.K. [VTT Energy, Helsinki (Finland); Nilsson, Lars [Studsvik Eco and Safety AB, Nykoeping (Sweden); Sjoevall, H. [Teoliisuuden Voima Oy (Finland)

    1999-11-01

    Recriticality in a BWR has been studied for a total loss of electric power accident scenario. In a BWR, the B{sub 4}C control rods would melt and relocate from the core before the fuel during core uncovery and heat-up. If electric power returns during this time-window unborated water from ECCS systems will start to reflood the partly control rod free core. Recriticality might take place for which the only mitigating mechanisms are the Doppler effect and void formation. In order to assess the impact of recriticality on reactor safety, including accident management measures, the following issues have been investigated in the SARA project: 1. the energy deposition in the fuel during super-prompt power burst, 2. the quasi steady-state reactor power following the initial power burst and 3. containment response to elevated quasi steady-state reactor power. The approach was to use three computer codes and to further develop and adapt them for the task. The codes were SIMULATE-3K, APROS and RECRIT. Recriticality analyses were carried out for a number of selected reflooding transients for the Oskarshamn 3 plant in Sweden with SIMULATE-3K and for the Olkiluoto 1 plant in Finland with all three codes. The core state initial and boundary conditions prior to recriticality have been studied with the severe accident codes SCDAP/RELAP5, MELCOR and MAAP4. The results of the analyses show that all three codes predict recriticality - both superprompt power bursts and quasi steady-state power generation - for the studied range of parameters, i. e. with core uncovery and heat-up to maximum core temperatures around 1800 K and water flow rates of 45 kg/s to 2000 kg/s injected into the downcomer. Since the recriticality takes place in a small fraction of the core the power densities are high which results in large energy deposition in the fuel during power burst in some accident scenarios. The highest value, 418 cal/g, was obtained with SIMULATE-3K for an Oskarshamn 3 case with reflooding

  7. Finite element analyses of CCAT preliminary design

    Science.gov (United States)

    Sarawit, Andrew T.; Kan, Frank W.

    2014-07-01

    This paper describes the development of the CCAT telescope finite element model (FEM) and the analyses performed to support the preliminary design work. CCAT will be a 25 m diameter telescope operating in the 0.2 to 2 mm wavelength range. It will be located at an elevation of 5600 m on Cerro Chajnantor in Northern Chile, near ALMA. The telescope will be equipped with wide-field cameras and spectrometers mounted at the two Nasmyth foci. The telescope will be inside an enclosure to protect it from wind buffeting, direct solar heating, and bad weather. The main structures of the telescope include a steel Mount and a carbon-fiber-reinforced-plastic (CFRP) primary truss. The finite element model developed in this study was used to perform modal, frequency response, seismic response spectrum, stress, and deflection analyses of telescope. Modal analyses of telescope were performed to compute the structure natural frequencies and mode shapes and to obtain reduced order modal output at selected locations in the telescope structure to support the design of the Mount control system. Modal frequency response analyses were also performed to compute transfer functions at these selected locations. Seismic response spectrum analyses of the telescope subject to the Maximum Likely Earthquake were performed to compute peak accelerations and seismic demand stresses. Stress analyses were performed for gravity load to obtain gravity demand stresses. Deflection analyses for gravity load, thermal load, and differential elevation drive torque were performed so that the CCAT Observatory can verify that the structures meet the stringent telescope surface and pointing error requirements.

  8. Publication point indicators

    DEFF Research Database (Denmark)

    Elleby, Anita; Ingwersen, Peter

    2010-01-01

    novel publication point indicators (PPIs) that are formalized and exemplified. Two diachronic citation windows are applied: 2006-07 and 2006-08. Web of Science (WoS) as well as Google Scholar (GS) are applied to observe the cite delay and citedness for the different document types published by DIIS......, journal articles, book chapters/conference papers and monographs. Journal Crown Indicator (JCI) calculations was based on WoS. Three PPIs are proposed: thePublication Point Ratio (PPR), which measures the sum of obtained publiacation points over the sum of the ideal pointws for the same set of documents...

  9. Do acupuncture points exist?

    Energy Technology Data Exchange (ETDEWEB)

    Yan Xiaohui; Zhang Xinyi [Department of Physics, Surface Physics Laboratory (State Key Laboratory), and Synchrotron Radiation Research Center of Fudan University, Shanghai 200433 (China); Liu Chenglin [Physics Department of Yancheng Teachers' College, Yancheng 224002 (China); Dang, Ruishan [Second Military Medical University, Shanghai 200433 (China); Huang Yuying; He Wei [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039 (China); Ding Guanghong [Shanghai Research Center of Acupuncture and Meridian, Pudong, Shanghai 201203 (China)

    2009-05-07

    We used synchrotron x-ray fluorescence analysis to probe the distribution of four chemical elements in and around acupuncture points, two located in the forearm and two in the lower leg. Three of the four acupuncture points showed significantly elevated concentrations of elements Ca, Fe, Cu and Zn in relation to levels in the surrounding tissue, with similar elevation ratios for Cu and Fe. The mapped distribution of these elements implies that each acupuncture point seems to be elliptical with the long axis along the meridian. (note)

  10. Do acupuncture points exist?

    International Nuclear Information System (INIS)

    We used synchrotron x-ray fluorescence analysis to probe the distribution of four chemical elements in and around acupuncture points, two located in the forearm and two in the lower leg. Three of the four acupuncture points showed significantly elevated concentrations of elements Ca, Fe, Cu and Zn in relation to levels in the surrounding tissue, with similar elevation ratios for Cu and Fe. The mapped distribution of these elements implies that each acupuncture point seems to be elliptical with the long axis along the meridian. (note)

  11. Zero-pointed manifolds

    OpenAIRE

    Ayala, David; Francis, John

    2014-01-01

    We formulate a theory of pointed manifolds, accommodating both embeddings and Pontryagin-Thom collapse maps, so as to present a common generalization of Poincar\\'e duality in topology and Koszul duality in $\\mathcal{E}_n$-algebra.

  12. Designated Wildlife Lakes - points

    Data.gov (United States)

    Minnesota Department of Natural Resources — This is a point shapefile of Designated Wildlife Lakes in Minnesota. This shapefile was created by converting lake polygons from the Designated Wildlife Lakes...

  13. Allegheny County Address Points

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset contains address points which represent physical address locations assigned by the Allegheny County addressing authority. Data is updated by County...

  14. National Wetlands Inventory Points

    Data.gov (United States)

    Minnesota Department of Natural Resources — Wetland point features (typically wetlands that are too small to be as area features at the data scale) mapped as part of the National Wetlands Inventory (NWI). The...

  15. Point/Counterpoint

    DEFF Research Database (Denmark)

    Ungar, David; Ernst, Erik

    2007-01-01

    Point Argument: "Dynamic Languages (in Reactive Environments) Unleash Creativity," by David Ungar. For the sake of creativity, the profession needs to concentrate more on inventing new and better dynamic languages and environments and less on improving static languages. Counterpoint Argument...

  16. Triple Point Topological Metals

    Science.gov (United States)

    Zhu, Ziming; Winkler, Georg W.; Wu, QuanSheng; Li, Ju; Soluyanov, Alexey A.

    2016-07-01

    Topologically protected fermionic quasiparticles appear in metals, where band degeneracies occur at the Fermi level, dictated by the band structure topology. While in some metals these quasiparticles are direct analogues of elementary fermionic particles of the relativistic quantum field theory, other metals can have symmetries that give rise to quasiparticles, fundamentally different from those known in high-energy physics. Here, we report on a new type of topological quasiparticles—triple point fermions—realized in metals with symmorphic crystal structure, which host crossings of three bands in the vicinity of the Fermi level protected by point group symmetries. We find two topologically different types of triple point fermions, both distinct from any other topological quasiparticles reported to date. We provide examples of existing materials that host triple point fermions of both types and discuss a variety of physical phenomena associated with these quasiparticles, such as the occurrence of topological surface Fermi arcs, transport anomalies, and topological Lifshitz transitions.

  17. Iowa Geologic Sampling Points

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — Point locations of geologic samples/files in the IGS repository. Types of samples include well cuttings, outcrop samples, cores, drillers logs, measured sections,...

  18. Transitivity on Weierstrass points

    CERN Document Server

    Laing, Zoe

    2010-01-01

    We look for Riemann surfaces whose automorphism group acts transitively on the Weierstrass points. We concentrate on hyperelliptic surfaces, surfaces with PSL(2, q) as automorphism group, Platonic surfaces and Fermat curves.

  19. Characterization of MIPAS elevation pointing

    Directory of Open Access Journals (Sweden)

    M. Kiefer

    2007-01-01

    Full Text Available Sufficient knowledge of the pointing is essential for analyses of limb emission measurements. The scientific retrieval processor for MIPAS on ENVISAT operated at IMK allows the retrieval of pointing information in terms of tangent altitudes along with temperature. The retrieved tangent altitudes are independent of systematic offsets in the engineering Line-Of-Sight (LOS information delivered with the ESA Level 1b product. The difference of pointing retrieved from the reprocessed high resolution MIPAS spectra and the engineering pointing information was examined with respect to spatial/temporal behaviour. Among others the following characteristics of MIPAS pointing could be identified: Generally the engineering tangent altitudes are too high by 0–1.8 km with conspicuous variations in this range over time. Prior to December of 2003 there was a drift of about 50–100 m/h, which was due to a slow change in the satellite attitude. A correction of this attitude is done twice a day, which leads to discontinuities in the order of 1–1.5 km in the tangent altitudes. Occasionally discontinuities up to 2.5 km are found, as already reported from MIPAS and SCIAMACHY observations. After an update of the orbit position software in December 2003 values of drift and jumps are much reduced. There is a systematic difference in the mispointing between the poles which amounts to 1.5–2 km, i.e. there is a conspicuous orbit-periodic feature. The analysis of the correlation between the instrument's viewing angle azimuth and differential mispointing supports the hypotheses that a major part of this latter phenomenon can be attributed to an error in the roll angle of the satellite/instrument system of approximately 42 mdeg. One conclusion is that ESA level 2 data should be compared to other data exclusively on tangent pressure levels. Complementary to IMK data, ESA operational LOS calibration results were used to characterize MIPAS pointing. For this purpose

  20. Fixed Point Logics

    OpenAIRE

    Dawar, Anuj; Gurevich, Yuri

    2002-01-01

    We consider fixed point logics, i.e., extensions of first order predicate logic with operators defining fixed points. A number of such operators, generalizing inductive definitions, have been studied in the context of finite model theory, including nondeterministic and alternating operators. We review results established in finite model theory, and also consider the expressive power of the resulting logics on infinite structures. In particular, we establish the relationship between inflationa...

  1. Relative fixed point theory

    OpenAIRE

    Ponto, Kate

    2009-01-01

    The Lefschetz fixed point theorem and its converse have many generalizations. One of these generalizations is to endomorphisms of a space relative to a fixed subspace. In this paper we define relative Lefschetz numbers and Reidemeister traces using traces in bicategories with shadows. We use the functoriality of this trace to identify different forms of these invariants and to prove a relative Lefschetz fixed point theorem and its converse.

  2. SharePoint governance

    OpenAIRE

    Ali, Mudassar

    2013-01-01

    SharePoint is a web-based business collaboration platform from Microsoft which is very robust and dynamic in nature. The platform has been in the market for more than a decade and has been adapted by large number of organisations in the world. The platform has become larger in scale, richer in features and is improving consistently with every new version. However, SharePoint governance has also gained more importance with these extensions, which always has been a tough chall...

  3. Pratique de l'analyse fonctionelle

    CERN Document Server

    Tassinari, Robert

    1997-01-01

    Mettre au point un produit ou un service qui soit parfaitement adapté aux besoins et aux exigences du client est indispensable pour l'entreprise. Pour ne rien laisser au hasard, il s'agit de suivre une méthodologie rigoureuse : celle de l'analyse fonctionnelle. Cet ouvrage définit précisément cette méthode ainsi que ses champs d'application. Il décrit les méthodes les plus performantes en termes de conception de produit et de recherche de qualité et introduit la notion d'analyse fonctionnelle interne. Un ouvrage clé pour optimiser les processus de conception de produit dans son entreprise. -- Idées clés, par Business Digest

  4. Holographic Three point Functions

    DEFF Research Database (Denmark)

    Bissi, Agnese

    In this thesis it is addressed the problem of the computation of three point correlation functions within the AdS=CFT correspondence. In the context of the AdS 5=CFT4 correspondence we present three computations. First we compare the results of tree level three point functions of two giant...... gravitons and a point like graviton and its dual counterpart, namely two Schur polynomials and a single trace chiral primary. Secondly we compute the one loop correction to planar, non extremal three point functions of two heavy and one light operators, both from the gauge and string side in the Frolov......-Tseytlin regime. Finally we generalize the scalar product of two states belonging to the SO(6) sector of N = 4 SYM with implications on the construction of three point functions of 3 non-BPS operators from the gauge theory side. On the other hand in the AdS4=CFT3 correspondence we compare the computations in the...

  5. Cost/benefit analyses of environmental impact

    International Nuclear Information System (INIS)

    Various aspects of cost-benefit analyses are considered. Some topics discussed are: regulations of the National Environmental Policy Act (NEPA); statement of AEC policy and procedures for implementation of NEPA; Calvert Cliffs decision; AEC Regulatory Guide; application of risk-benefit analysis to nuclear power; application of the as low as practicable (ALAP) rule to radiation discharges; thermal discharge restrictions proposed by EPA under the 1972 Amendment to the Water Pollution Control Act; estimates of somatic and genetic insult per unit population exposure; occupational exposure; EPA Point Source Guidelines for Discharges from Steam Electric Power Plants; and costs of closed-cycle cooling using cooling towers. (U.S.)

  6. Rod Ellis, Gary Barkhuizen, Analysing Learner Language

    OpenAIRE

    Narcy-Combes, Marie-Françoise

    2014-01-01

    Ce livre vient à point nommé pour compléter les outils à la disposition des jeunes chercheurs en linguistique appliquée et didactique des langues, comme des praticiens de terrain désireux de conduire une recherche-action. Comme souvent en ce qui concerne les ouvrages de Rod Ellis, il s’agit d’une somme : une étude diachronique des outils utilisés depuis les années soixante par les chercheurs en acquisition des langues pour l’analyse des productions écrites et orales des apprenants de langue. ...

  7. Analyse

    DEFF Research Database (Denmark)

    Dubgaard, Alex

    2009-01-01

    Restriktioner over for landbruget er en god forretning. Til gengæld kan det ikke betale sig at reducere udledningen af drivhusgasser......Restriktioner over for landbruget er en god forretning. Til gengæld kan det ikke betale sig at reducere udledningen af drivhusgasser...

  8. Holographic Three point Functions

    DEFF Research Database (Denmark)

    Martirosyan, Ara

    The main subject of this thesis is the computation of structure constants appearing in the three-point functions for certain type of states/operators in the context of the AdS/CFT correspondence, which is one of the important parts of the dynamical problem in the dual theories of the correspondence...

  9. New Novae snack point

    CERN Multimedia

    2012-01-01

    Located next to the car park by the flag poles, a few metres from the Main CERN Reception (building 33), a new snack point catered by Novae will open to the public on Wednesday 8 August. More information will be available in the next issue of the Bulletin!

  10. The GATT's Starting Point

    OpenAIRE

    Bown, Chad P.; Irwin, Douglas A.

    2016-01-01

    How high were import tariffs when GATT participants began negotiations to reduce them in 1947? Establishing this starting point is key to determining how successful the GATT has been in bringing down trade barriers. If the average tariff level was about 40 percent, as commonly reported, the implied early tariff reductions were substantial, but this number has never been verified. This pape...

  11. Superconducting quantum point contacts

    Science.gov (United States)

    Bretheau, L.; Girit, Ç.; Tosi, L.; Goffman, M.; Joyez, P.; Pothier, H.; Esteve, D.; Urbina, C.

    2012-01-01

    We review our experiments on the electronic transport properties of atomic contacts between metallic electrodes, in particular superconducting ones. Despite ignorance of the exact atomic configuration, these ultimate quantum point contacts can be manipulated and well characterized in-situ. They allow performing fundamental tests of the scattering theory of quantum transport. In particular, we discuss the case of the Josephson effect.

  12. Superconducting Quantum Point Contacts

    OpenAIRE

    Bretheau, L.; Girit, Ç.; Tosi, L.; Goffman, M.; Joyez, P.; Pothier, H.; Esteve, D.; Urbina, C.

    2012-01-01

    We review our experiments on the electronic transport properties of atomic contacts between metallic electrodes, in particular superconducting ones. Despite ignorance of the exact atomic configuration, these ultimate quantum point contacts can be manipulated and well characterized in-situ. They allow performing fundamental tests of the scattering theory of quantum transport. In particular, we discuss the case of the Josephson effect.

  13. Critical Points of Contact

    DEFF Research Database (Denmark)

    Jensen, Ole B.; Wind, Simon; Lanng, Ditte Bendix

    In this brief article, we shall illustrate the application of the analytical and interventionist concept of ‘Critical Points of Contact’ (CPC) through a number of urban design studios. The notion of CPC has been developed over a span of the last three to four years and is reported in more detail...

  14. Point kinetics modeling

    International Nuclear Information System (INIS)

    A normalized form of the point kinetics equations, a prompt jump approximation, and the Nordheim-Fuchs model are used to model nuclear systems. Reactivity feedback mechanisms considered include volumetric expansion, thermal neutron temperature effect, Doppler effect and void formation. A sample problem of an excursion occurring in a plutonium solution accidentally formed in a glovebox is presented

  15. Countermeasure analyses on selection and cultivation of the new economic growth points in resource-based city of Northern Shaanxi%陕北资源型城市选择和培育新经济增长点的对策分析

    Institute of Scientific and Technical Information of China (English)

    徐长玉; 李娟

    2012-01-01

    国家实施西部大开发战略以来,陕北资源型城市依托矿产资源开采,不仅摘掉了国家级贫困地区的帽子,而且主要经济指标从陕西后列排在前列。然而,随着资源的过度开采,陕北资源型城市却陷入了资源濒临枯竭,经济发展后劲不足的困难局面。因此,陕北各级政府只有通过选择和培育接续产业,积极采取各种应对措施,才能实现陕北资源型城市持续向好发展。%Since the implementation of Western Development Strategy,depending on exploitation of mineral resources,the resource-based city of Northern Shaanxi has not only got rid of the title of "state-level poverty-stricken area",but also ranked ahead from behind in its main economic indicators in Shaanxi province.However,with the overexploitation of resources,the resource-based city of Northern Shaanxi has bogged down to a dilemma of exhaustion of resources and constraint of economic development.Therefore,the governments at all levels in Northern Shaanxi have to select and breed new economic growth points and actively take all appropriate measures in order to achieve the comprehensive,coordinated and sustainable

  16. PynPoint Code for Exoplanet Imaging

    CERN Document Server

    Amara, Adam; Akeret, Joel

    2014-01-01

    We announce the public release of PynPoint, a Python package that we have developed for analysing exoplanet data taken with the angular differential imaging observing technique. In particular, PynPoint is designed to model the point spread function of the central star and to subtract its flux contribution to reveal nearby faint companion planets. The current version of the package does this correction by using a principal component analysis method to build a basis set for modelling the point spread function of the observations. We demonstrate the performance of the package by reanalysing publicly available data on the exoplanet beta Pictoris b, which consists of close to 24,000 individual image frames. We show that PynPoint is able to analyse this typical data in roughly 1.5 minutes on a Mac Pro, when the number of images is reduced by co-adding in sets of 5. The main computational work parallelises well as a result of a reliance on SciPy and NumPy functions. For this calculation the peak memory load is 6Gb, ...

  17. Henig Proper Efficient Points and Generalized Henig Proper Efficient Points

    Institute of Scientific and Technical Information of China (English)

    Jing Hui QIU

    2009-01-01

    Applying the theory of locally convex spaces to vector optimization,we investigate the relationship between Henig proper efficient points and generalized Henig proper efficient points. In particular,we obtain a sufficient and necessary condition for generalized Henig proper efficient points to be Henig proper efficient points. From this,we derive several convenient criteria for judging Henig proper efficient points.

  18. Properties of residuals for spatial point processes

    DEFF Research Database (Denmark)

    Baddeley, A.; Møller, Jesper; Pakes, A. G.

    2008-01-01

    For any point process in Rd that has a Papangelou conditional intensity λ, we define a random measure of ‘innovations' which has mean zero. When the point process model parameters are estimated from data, there is an analogous random measure of ‘residuals'. We analyse properties of the innovations...... and residuals, including first and second moments, conditional independence, a martingale property, and lack of correlation. Some large sample asymptotics are studied. We derive the marginal distribution of smoothed residuals by solving a distributional equivalence....

  19. Precise Point Positioning

    DEFF Research Database (Denmark)

    Zhang, Xiaohong

    determination’ based on the relationship between the point clouds on regular objects (e.g. flat top buildings) and the ground truth of the objects used for calibration. In order to extract the footprints on the objects, filtering was implemented before the calibration. Three example tests have been made and......This report presents the results of investigations to determine accurate positions of aircrafts in airborne surveys (airborne gravity and airborne lidar) using precise point positioning, and also introduces a new so called “stepwise geometric misalignment determination” method to retrieve the...... airborne lidar system misalignment angle by automating the matching of lidar data with ground truth. Kinematic GPS positioning has been widely used, but the available commercial software systems are normally only suitable for the short or medium range kinematic baseline. However, in polar areas, airborne...

  20. The quantum change point

    CERN Document Server

    Sentís, Gael; Calsamiglia, John; Chiribella, Giulio; Munoz-Tapia, Ramon

    2016-01-01

    Sudden changes are ubiquitous in nature. Identifying them is of crucial importance for a number of applications in medicine, biology, geophysics, and social sciences. Here we investigate the problem in the quantum domain, considering a source that emits particles in a default state, until a point where it switches to another state. Given a sequence of particles emitted by the source, the problem is to find out where the change occurred. For large sequences, we obtain an analytical expression for the maximum probability of correctly identifying the change point when joint measurements on the whole sequence are allowed. We also construct strategies that measure the particles individually and provide an online answer as soon as a new particle is emitted by the source. We show that these strategies substantially underperform the optimal strategy, indicating that quantum sudden changes, although happening locally, are better detected globally.

  1. The Point Mass Concept

    OpenAIRE

    Lehnert B.

    2011-01-01

    A point-mass concept has been elaborated from the equations of the gravitational field. One application of these deductions results in a black hole configuration of the Schwarzschild type, having no electric charge and no angular momentum. The critical mass of a gravitational collapse with respect to the nuclear binding energy is found to be in the range of 0.4 to 90 solar masses. A second application is connected with the spec- ulation about an extended symmetric ...

  2. Point-Contact Spectroscopy

    CERN Document Server

    Naidyuk, Yu G; Naidyuk, Yu. G.

    2003-01-01

    The history is described of how one of the most commonly used electric circuit components, an ordinary electric contact, has become a powerful tool for the physicists to study various mechanisms of electron scattering in metals. The physical principles of spectroscopy of quasi-particle excitations in metals by means of point contacts (PCs) whose dimensions range from only a few to tens of nanometers are presented in a popular form.

  3. Building Points - MO 2012 New Madrid Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Missouri Structure Points are structure points generated from a two pass look over the 2007 State 2ft imagery. Unlike the structure footprints, the building point...

  4. Building Points - MO 2012 Dunklin Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Missouri Structure Points are structure points generated from a two pass look over the 2007 State 2ft imagery. Unlike the structure footprints, the building point...

  5. Building Points - MO 2012 Stoddard Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Missouri Structure Points are structure points generated from a two pass look over the 2007 State 2ft imagery. Unlike the structure footprints, the building point...

  6. Building Points - MO 2012 Pemiscot Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Missouri Structure Points are structure points generated from a two pass look over the 2007 State 2ft imagery. Unlike the structure footprints, the building point...

  7. Building Points - MO 2012 Mississippi Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Missouri Structure Points are structure points generated from a two pass look over the 2007 State 2ft imagery. Unlike the structure footprints, the building point...

  8. Building Points - MO 2012 Scott Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Missouri Structure Points are structure points generated from a two pass look over the 2007 State 2ft imagery. Unlike the structure footprints, the building point...

  9. Analysing Janusz Kaminski's cinematography based on selected movies

    OpenAIRE

    Rumanóczki, Péter

    2015-01-01

    The aim of this thesis was to analyse the artistic and technical points of the work of Polish cinematographer Janusz Kaminski. Three movies were selected from his filmography, all of them were directed by Steven Spielberg. The movies were analysed with the intention to find the trademarks thatKaminski used during his career. In addition, the technical details of making movies, what does a crew do and what equipment they use, were studied.

  10. Conjoint-Analyse und Marktsegmentierung

    OpenAIRE

    Steiner, Winfried J.; Baumgartner, Bernhard

    2003-01-01

    Die Marktsegmentierung zählt neben der Neuproduktplanung und Preisgestaltung zu den wesentlichen Einsatzgebieten der Conjoint-Analyse. Neben traditionell eingesetzten zweistufigen Vorgehensweisen, bei denen Conjoint-Analyse und Segmentierung in zwei getrennten Schritten erfolgen, stehen heute mit Methoden wie der Clusterwise Regression oder Mixture-Modellen neuere Entwicklungen, die eine simultane Segmentierung und Präferenzschätzung ermöglichen, zur Verfügung. Der Beitrag gibt einen Überblic...

  11. Tipping point analysis of atmospheric oxygen concentration

    Energy Technology Data Exchange (ETDEWEB)

    Livina, V. N.; Forbes, A. B. [National Physical Laboratory, Teddington TW11 0LW (United Kingdom); Vaz Martins, T. M. [John Innes Centre, Norwich NR4 7UH (United Kingdom)

    2015-03-15

    We apply tipping point analysis to nine observational oxygen concentration records around the globe, analyse their dynamics and perform projections under possible future scenarios, leading to oxygen deficiency in the atmosphere. The analysis is based on statistical physics framework with stochastic modelling, where we represent the observed data as a composition of deterministic and stochastic components estimated from the observed data using Bayesian and wavelet techniques.

  12. Time Stamps for Fixed-Point Approximation

    DEFF Research Database (Denmark)

    Damian, Daniela

    2001-01-01

    Time stamps were introduced in Shivers's PhD thesis for approximating the result of a control-flow analysis. We show them to be suitable for computing program analyses where the space of results (e.g., control-flow graphs) is large. We formalize time-stamping as a top-down, fixed......-point approximation algorithm which maintains a single copy of intermediate results. We then prove the correctness of this algorithm....

  13. Reliability Analyses of Groundwater Pollutant Transport

    Energy Technology Data Exchange (ETDEWEB)

    Dimakis, Panagiotis

    1997-12-31

    This thesis develops a probabilistic finite element model for the analysis of groundwater pollution problems. Two computer codes were developed, (1) one using finite element technique to solve the two-dimensional steady state equations of groundwater flow and pollution transport, and (2) a first order reliability method code that can do a probabilistic analysis of any given analytical or numerical equation. The two codes were connected into one model, PAGAP (Probability Analysis of Groundwater And Pollution). PAGAP can be used to obtain (1) the probability that the concentration at a given point at a given time will exceed a specified value, (2) the probability that the maximum concentration at a given point will exceed a specified value and (3) the probability that the residence time at a given point will exceed a specified period. PAGAP could be used as a tool for assessment purposes and risk analyses, for instance the assessment of the efficiency of a proposed remediation technique or to study the effects of parameter distribution for a given problem (sensitivity study). The model has been applied to study the greatest self sustained, precipitation controlled aquifer in North Europe, which underlies Oslo`s new major airport. 92 refs., 187 figs., 26 tabs.

  14. Exploring Foundation Concepts in Introductory Statistics Using Dynamic Data Points

    Science.gov (United States)

    Ekol, George

    2015-01-01

    This paper analyses introductory statistics students' verbal and gestural expressions as they interacted with a dynamic sketch (DS) designed using "Sketchpad" software. The DS involved numeric data points built on the number line whose values changed as the points were dragged along the number line. The study is framed on aggregate…

  15. Point defects in silicates

    International Nuclear Information System (INIS)

    Topaz is a wide band gap insulating crystal with four Al2F2SiO4 formula units per orthorhombic unit cell and containing isolated SiO4 tetrahedron. Electron spin resonance (ESR), UV-VIS spectrophotometry, photoluminescence, and isochronal annealing were used to study the point defects introduced by fast-neutron bombardment or by alpha decay recoils. The superoxide radical is characterized by a single hole-like spin 1/2 signal with principle g-values gxx = 2.0055, gzz = 2.0407 and the major axis of the defect points along 0.356a + 0.152b + 0.922c. The superoxide anneals near 650C. Two polarization dependent absorptions occur in the UV due to the transitions 2IIg → 2IIu and 2IIg → 2Δu. The former has an oscillator strength of 0.06. The 2.5 eV polarization dependent luminescence is due to the transition 2IIg → 2IIu. The 2Δu → 2IIu is non-radiative. The doubly occupied dangling silicon bond, the blue center, is characterized by a 2 eV polarization dependent absorption and is non-paramagnetic. The transition dipole for this absorption points in the direction 0.93a + 0.210b + 0.305c and the oscillator strength is approximately 2.0 x 10-3. The blue center anneals at 500C. This dangling bond defect is one of two models proposed for a similar 2 eV absorption in silica glass. The defects in quartz (SiO2) were introduced by the recoil nuclei after alpha decays of uranium, thorium, and their daughters in natural abundances. The accumulating damage provides a geological clock by which the age of the quartz can be found. The sample came from Yucca Flats, Nevada, the proposed site of a nuclear waste dump

  16. Ubiquitous Pointing and Drawing

    Directory of Open Access Journals (Sweden)

    Kristian Jantz

    2007-12-01

    Full Text Available This paper presents a system that enables a presenter to work directly on the projection without the typical interruption of the presentation flow being caused by a mouse or keyboard activity. The lecturer simply uses his fingers as a natural and intuitive pointing device. The system consists of an LED, a standard webcam, a video projector, and a small software system running on a notebook computer. The camera is positioned such that it views the projection area. After a few calibration clicks, the mouse emulation is functional at any place of the projection area.

  17. The Tipping Points of Technology Development

    Directory of Open Access Journals (Sweden)

    Tauno Kekäle

    2014-07-01

    Full Text Available The tipping point, the decisive point in time in the competition between old and new, is an interesting phenomenon in physics of today. This aspect in technology acceptance is connected to many business decisions such as technology investments, product releases, resource allocation, sales forecasts and, ultimately, affects the profitability and even survival of a company. The tipping point itself is based on many stochastic and dynamic variables, and the process may at least partly be described as path-dependent. This paper analyses the tipping point from three aspects: (1 product performance, (2 features of the market and infrastructure (including related technologies and human network externalities, and (3 actions of the incumbents (including customer lock-in, systems lock-in, and sustaining innovation. The paper is based on the Bass s-curve idea and the technology trajectory concept proposed by Dosi. Three illustrative cases are presented to make the point of the multiple factors affecting technology acceptance and, thus, the tipping point. The paper also suggests outlines for further research in field of computer simulation.

  18. SPIRE Point Source Photometry

    CERN Document Server

    Pearson, Chris; North, Chris; Bendo, George; Conversi, Luca; Dowell, Darren; Griffin, Matt; Jin, Terry; Laporte, Nicolas; Papageorgiou, Andreas; Schulz, Bernhard; Shupe, Dave; Smith, Anthony J; Xu, Kevin

    2014-01-01

    The different algorithms appropriate for point source photometry on data from the SPIRE instrument on-board the Herschel Space Observatory, within the Herschel Interactive Processing Environment (HIPE) are compared. Point source photometry of a large ensemble of standard calibration stars and dark sky observations is carried out using the 4 major methods within HIPE: SUSSEXtractor, DAOphot, the SPIRE Timeline Fitter and simple Aperture Photometry. Colour corrections and effective beam areas as a function of the assumed source spectral index are also included to produce a large number of photometric measurements per individual target, in each of the 3 SPIRE bands (250, 350, 500um), to examine both the accuracy and repeatability of each of the 4 algorithms. It is concluded that for flux densities down to the level of 30mJy that the SPIRE Timeline Fitter is the method of choice. However, at least in the 250 and 350um bands, all 4 methods provide photometric repeatability better than a few percent down to at appr...

  19. Big Rock Point

    International Nuclear Information System (INIS)

    The Big Rock Point Nuclear Plant is the second oldest operating nuclear power plant in the United States. Its 25-yr history is an embodiment of the history of commercial nuclear power. In some respects, its situation today - 5 yr past the midpoint of its design life - can provide operators of other nuclear plants a glimpse of where they will be in another decade. Construction on Big Rock Point began in 1960. It was completed just 2 1/2 yr later at a cost of $27 million. The plant is a General Electric (GE)-designed boiling water direct cycle, forced circulation, high power density reactor. Its construction was undertaken by Consumers Power under the third round of the U.S. Atomic Energy Commission's (AEC's) Power Demonstration Reactor Program. It was an advanced version of GE's Vallecitos boiling water reactor. The plant's fuel was GE's responsibility and, under contract with the AEC, it conducted a fuel research and development (RandD) program involving the plant. Although the plant was designed for research - its original electrical capacity was set at 50 MW(electric) - the unit was subsequently uprated to 69 MW(net electric). The original plant staff included only 44 people and minimal security. Mirroring the industry experience, the number of people on-site had quadrupled

  20. Selective Integration in the Material-Point Method

    DEFF Research Database (Denmark)

    Andersen, Lars; Andersen, Søren; Damkilde, Lars

    2009-01-01

    The paper deals with stress integration in the material-point method. In order to avoid parasitic shear in bending, a formulation is proposed, based on selective integration in the background grid that is used to solve the governing equations. The suggested integration scheme is compared to a...... traditional material-point-method computation in which the stresses are evaluated at the material points. The deformation of a cantilever beam is analysed, assuming elastic or elastoplastic material behaviour....

  1. September 2002 Lidar Point Data of Southern California Coastline: Dana Point to Point La Jolla

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs) from Dana Point to Point...

  2. May 2002 Lidar Point Data of Southern California Coastline: Dana Point to Point La Jolla

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs) from Dana Point to Point...

  3. Understanding the Point of Chimpanzee Pointing: Epigenesis and Ecological Validity

    OpenAIRE

    Leavens, David A.; Hopkins, William D.; Bard, Kim A.

    2005-01-01

    Pointing has long been considered to be a uniquely human, universal, and biologically based gesture. However, pointing emerges spontaneously, without explicit training, in captive chimpanzees. Because pointing is commonplace in captive chimpanzees and virtually absent in wild chimpanzees, and because both captive and wild chimpanzees are sampled from the same gene pool, pointing by captive apes is attributable to environmental influences on communicative development. If pointing by captive ch...

  4. Virtual turning points

    CERN Document Server

    Honda, Naofumi; Takei, Yoshitsugu

    2015-01-01

    The discovery of a virtual turning point truly is a breakthrough in WKB analysis of higher order differential equations. This monograph expounds the core part of its theory together with its application to the analysis of higher order Painlevé equations of the Noumi–Yamada type and to the analysis of non-adiabatic transition probability problems in three levels. As M.V. Fedoryuk once lamented, global asymptotic analysis of higher order differential equations had been thought to be impossible to construct. In 1982, however, H.L. Berk, W.M. Nevins, and K.V. Roberts published a remarkable paper in the Journal of Mathematical Physics indicating that the traditional Stokes geometry cannot globally describe the Stokes phenomena of solutions of higher order equations; a new Stokes curve is necessary.

  5. Learning Determinantal Point Processes

    CERN Document Server

    Kulesza, Alex

    2012-01-01

    Determinantal point processes (DPPs), which arise in random matrix theory and quantum physics, are natural models for subset selection problems where diversity is preferred. Among many remarkable properties, DPPs offer tractable algorithms for exact inference, including computing marginal probabilities and sampling; however, an important open question has been how to learn a DPP from labeled training data. In this paper we propose a natural feature-based parameterization of conditional DPPs, and show how it leads to a convex and efficient learning formulation. We analyze the relationship between our model and binary Markov random fields with repulsive potentials, which are qualitatively similar but computationally intractable. Finally, we apply our approach to the task of extractive summarization, where the goal is to choose a small subset of sentences conveying the most important information from a set of documents. In this task there is a fundamental tradeoff between sentences that are highly relevant to th...

  6. The Point Mass Concept

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2011-04-01

    Full Text Available A point-mass concept has been elaborated from the equations of the gravitational field. One application of these deductions results in a black hole configuration of the Schwarzschild type, having no electric charge and no angular momentum. The critical mass of a gravitational collapse with respect to the nuclear binding energy is found to be in the range of 0.4 to 90 solar masses. A second application is connected with the spec- ulation about an extended symmetric law of gravitation, based on the options of positive and negative mass for a particle at given positive energy. This would make masses of equal polarity attract each other, while masses of opposite polarity repel each other. Matter and antimatter are further proposed to be associated with the states of positive and negative mass. Under fully symmetric conditions this could provide a mechanism for the separation of antimatter from matter at an early stage of the universe.

  7. Point Pollution Sources Dimensioning

    Directory of Open Access Journals (Sweden)

    Georgeta CUCULEANU

    2011-06-01

    Full Text Available In this paper a method for determining the main physical characteristics of the point pollution sources is presented. It can be used to find the main physical characteristics of them. The main physical characteristics of these sources are top inside source diameter and physical height. The top inside source diameter is calculated from gas flow-rate. For reckoning the physical height of the source one takes into account the relation given by the proportionality factor, defined as ratio between the plume rise and physical height of the source. The plume rise depends on the gas exit velocity and gas temperature. That relation is necessary for diminishing the environmental pollution when the production capacity of the plant varies, in comparison with the nominal one.

  8. The Point Mass Concept

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2011-04-01

    Full Text Available A point-mass concept has been elaborated from the equations of the gravitational field. One application of these deductions results in a black hole configuration of the Schwarzschild type, having no electric charge and no angular momentum. The critical mass of a gravitational collapse with respect to the nuclear binding energy is found to be in the range of 0.4 to 90 solar masses. A second application is connected with the speculation about an extended symmetric law of gravitation, based on the options of positive and negative mass for a particle at given positive energy. This would make masses of equal polarity attract each other, while masses of opposite polarity repel each other. Matter and antimatter are further proposed to be associated with the states of positive and negative mass. Under fully symmetric conditions this could provide a mechanism for the separation of antimatter from matter at an early stage of the universe.

  9. Point defects in platinum

    International Nuclear Information System (INIS)

    An investigation was made of the mobility and types of point defect introduced in platinum by deformation in liquid nitrogen, quenching into water from 1600oC, or reactor irradiation at 50oC. In all cases the activation energy for motion of the defect was determined from measurements of electrical resistivity. Measurements of density, hardness, and x-ray line broadening were also made there applicable. These experiments indicated that the principal defects remaining in platinum after irradiation were single vacant lattice sites and after quenching were pairs of vacant lattice sites. Those present after deformation In liquid nitrogen were single vacant lattice sites and another type of defect, perhaps interstitial atoms. (author)

  10. Mitogenomic analyses from ancient DNA

    DEFF Research Database (Denmark)

    Paijmans, Johanna L.A.; Gilbert, M Thomas P; Hofreiter, Michael

    2013-01-01

    . To date, at least 124 partially or fully assembled mitogenomes from more than 20 species have been obtained, and, given the rapid progress in sequencing technology, this number is likely to dramatically increase in the future. The increased information content offered by analysing full mitogenomes...

  11. Analysing student teachers’ lesson plans

    DEFF Research Database (Denmark)

    Carlsen, Louise Meier

    2015-01-01

    I investigate 17 mathematics student teachers’ productions, in view of examining the synergy and interaction between their mathematical and didactical knowledge. The concrete data material consists in lesson plans elaborated for the final exam of a unit on “numbers, arithmetic and algebra”. The...... anthropological theory of the didactic is used as a framework to analyse these components of practical and theoretical knowledge....

  12. Beskrivende analyse af mekaniske systemer

    DEFF Research Database (Denmark)

    Andreasen, Mogens Myrup; Hansen, Claus Thorp

    Descriptive analysis is the activity, where a given product is analysed for obtaining insight into different aspects, leading to an explicit description of each of these aspects. This textbook is worked out for course 72101 Produktanalyse (Analysis of products) given at DTU....

  13. Correlation analyses of deep galaxy samples

    International Nuclear Information System (INIS)

    Estimates of the two-point angular correlation function, w(theta), are presented for galaxy samples obtained from COSMOS machine measurements of 1.2-m UK Schmidt telescope (UKST) and 4-m Anglo-Australian telescope (AAT) plates. All of the estimated w(theta) are consistent with a -0.8 power-law slope at small scales. At larger angular scales a break from the power-law behaviour is seen in the UKST w(theta) corresponding to a spatial separation of 3 h-1 Mpc in agreement with earlier results. The AAT plates allow the correlation analyses to be carried out to 24 mag in the blue passband and 22 mag in the red passband. It is observed that the correlation function amplitude scaling relation in both passbands is very similar. (author)

  14. Tie-points and fixed-points in N^*

    CERN Document Server

    Dow, Alan

    2007-01-01

    A point x is a (bow) tie-point of a space X if X setminus {x} can be partitioned into (relatively) clopen sets each with x in its closure. Tie-points have appeared in the construction of non-trivial autohomeomorphisms of betaN setminus N and in the recent study of (precisely) 2-to-1 maps on betaN setminus N . In these cases the tie-points have been the unique fixed point of an involution on betaN setminus N. This paper is motivated by the search for 2-to-1 maps and obtaining tie-points of strikingly differing characteristics.

  15. Tie-points and fixed-points in N^*

    OpenAIRE

    Dow, Alan; SHELAH, Saharon

    2007-01-01

    A point x is a (bow) tie-point of a space X if X setminus {x} can be partitioned into (relatively) clopen sets each with x in its closure. Tie-points have appeared in the construction of non-trivial autohomeomorphisms of betaN setminus N and in the recent study of (precisely) 2-to-1 maps on betaN setminus N . In these cases the tie-points have been the unique fixed point of an involution on betaN setminus N. This paper is motivated by the search for 2-to-1 maps and obtaining tie-points of str...

  16. Statistical improvements in functional magnetic resonance imaging analyses produced by censoring high-motion data points.

    Science.gov (United States)

    Siegel, Joshua S; Power, Jonathan D; Dubis, Joseph W; Vogel, Alecia C; Church, Jessica A; Schlaggar, Bradley L; Petersen, Steven E

    2014-05-01

    Subject motion degrades the quality of task functional magnetic resonance imaging (fMRI) data. Here, we test two classes of methods to counteract the effects of motion in task fMRI data: (1) a variety of motion regressions and (2) motion censoring ("motion scrubbing"). In motion regression, various regressors based on realignment estimates were included as nuisance regressors in general linear model (GLM) estimation. In motion censoring, volumes in which head motion exceeded a threshold were withheld from GLM estimation. The effects of each method were explored in several task fMRI data sets and compared using indicators of data quality and signal-to-noise ratio. Motion censoring decreased variance in parameter estimates within- and across-subjects, reduced residual error in GLM estimation, and increased the magnitude of statistical effects. Motion censoring performed better than all forms of motion regression and also performed well across a variety of parameter spaces, in GLMs with assumed or unassumed response shapes. We conclude that motion censoring improves the quality of task fMRI data and can be a valuable processing step in studies involving populations with even mild amounts of head movement. PMID:23861343

  17. Analysing the distribution of synaptic vesicles using a spatial point process model

    DEFF Research Database (Denmark)

    Khanmohammadi, Mahdieh; Waagepetersen, Rasmus Plenge; Nava, Nicoletta; Nyengaard, Jens; Sporring, Jon

    2015-01-01

    Stress can affect the brain functionality in many ways. As the synaptic vesicles have a major role in nervous signal transportation in synapses, their distribution in relationship to the active zone is very important in studying the neuron responses. We study the effect of stress on brain...... functionality by statistically modelling the distribution of the synaptic vesicles in two groups of rats: a control group subjected to sham stress and a stressed group subjected to a single acute foot-shock (FS)-stress episode. We hypothesize that the synaptic vesicles have different spatial distributions in...

  18. Analysing the distribution of synaptic vesicles using a spatial point process model

    DEFF Research Database (Denmark)

    Khanmohammadi, Mahdieh; Waagepetersen, Rasmus; Nava, Nicoletta; Nyengaard, Jens; Sporring, Jon

    Stress can affect the brain functionality in many ways. As the synaptic vesicles have a major role in nervous signal transportation in synapses, their distribution in relationship to the active zone is very important in studying the neuron responses. We study the effect of stress on brain...... functionality by statistically modelling the distribution of the synaptic vesicles in two groups of rats: a control group subjected to sham stress and a stressed group subjected to a single acute foot-shock (FS)-stress episode. We hypothesize that the synaptic vesicles have different spatial distributions in...

  19. Gene network analyses point to the importance of human tissue kallikreins in melanoma progression

    Directory of Open Access Journals (Sweden)

    Landman Gilles

    2011-10-01

    Full Text Available Abstract Background A wide variety of high-throughput microarray platforms have been used to identify molecular targets associated with biological and clinical tumor phenotypes by comparing samples representing distinct pathological states. Methods The gene expression profiles of human cutaneous melanomas were determined by cDNA microarray analysis. Next, a robust analysis to determine functional classifications and make predictions based on data-oriented hypotheses was performed. Relevant networks that may be implicated in melanoma progression were also considered. Results In this study we aimed to analyze coordinated gene expression changes to find molecular pathways involved in melanoma progression. To achieve this goal, ontologically-linked modules with coordinated expression changes in melanoma samples were identified. With this approach, we detected several gene networks related to different modules that were induced or repressed during melanoma progression. Among them we observed high coordinated expression levels of genes involved in a cell communication (KRT4, VWF and COMP; b epidermal development (KLK7, LAMA3 and EVPL; and c functionally related to kallikreins (EVPL, KLK6, KLK7, KLK8, SERPINB13, SERPING1 and SLPI. Our data also indicated that hKLK7 protein expression was significantly associated with good prognosis and survival. Conclusions Our findings, derived from a different type of analysis of microarray data, highlight the importance of analyzing coordinated gene expression to find molecular pathways involved in melanoma progression.

  20. Transcriptome and selected metabolite analyses reveal points of sugar metabolism in jackfruit (Artocarpus heterophyllus Lam.).

    Science.gov (United States)

    Hu, Lisong; Wu, Gang; Hao, Chaoyun; Yu, Huan; Tan, Lehe

    2016-07-01

    Artocarpus heterophyllus Lam., commonly known as jackfruit, produces the largest tree-borne fruit known thus far. The edible part of the fruit develops from the perianths, and contains many sugar-derived compounds. However, its sugar metabolism is poorly understood. A fruit perianth transcriptome was sequenced on an Illumina HiSeq 2500 platform, producing 32,459 unigenes with an average length of 1345nt. Sugar metabolism was characterized by comparing expression patterns of genes related to sugar metabolism and evaluating correlations with enzyme activity and sugar accumulation during fruit perianth development. During early development, high expression levels of acid invertases and corresponding enzyme activities were responsible for the rapid utilization of imported sucrose for fruit growth. The differential expression of starch metabolism-related genes and corresponding enzyme activities were responsible for starch accumulated before fruit ripening but decreased during ripening. Sucrose accumulated during ripening, when the expression levels of genes for sucrose synthesis were elevated and high enzyme activity was observed. The comprehensive transcriptome analysis presents fundamental information on sugar metabolism and will be a useful reference for further research on fruit perianth development in jackfruit. PMID:27181946

  1. ATLAS Point 1 Construction

    CERN Multimedia

    Inigo-Golfin, J

    After 3 years of work in point 1, a number of surface buildings have already been completed and handed over to CERN (the control, the gas and the cooling and ventilation buildings) and, probably more appealing to the public, 60,000 m3 of earth have already been excavated from underground. At present, the technical cavern USA15 and its access shaft are almost finished, leaving only the main cavern and the liaison galleries to be completed in the coming year and a half. The main cavern has been excavated down to the radiation limit and its walls and vault will presently be concreted (see below the picture of the section of the vault with the impressive shell of 1.2 m thickness). The excavation of the bench (27 vertical metres to go yet!) will proceed from August, when some additional civil engineering work in the LHC tunnel will be undertaken. Needless to say many different services are necessary around the detector, both for its installation and future operation for physics. To that end much of the heavy...

  2. Point 1 Updates

    CERN Multimedia

    Inigo-Golfin, J.

    The ATLAS experimental area is located in Point 1, just across the main CERN entrance, in the commune of Meyrin. There people are ever so busy to finish the different infrastructures for ATLAS. Not only has Civil Engineering finished the construction of the USA15 technical cavern, but the excavation of the main UX15 cavern has resumed below the machine tunnel, after a brief halt to allow the construction of the UJ-caverns for the power converters of the LHC machine. The excavation work should end in August 2002. The UX15 hand-over to ATLAS is expected in April 2003. On the surface civil engineering is starting to complete the last two surface buildings (SDX1 and SH1), once the services (cooling pipes, ventilation ducts and the largest item, the lift modules and its lift of course) in the shaft PX15 have been completed. But the civil engineering is not all. A lot more is under way. The site installation of the steel structures in the caverns is to begin in Autumn, along with all the cooling pipes, airconditi...

  3. "Point de suspension"

    CERN Multimedia

    2004-01-01

    CERN - Globe of Science and Innovation 20 and 21 October Acrobatics, mime, a cappella singing, projections of images, a magical setting... a host of different tools of a grandeur matching that of the Universe they relate. A camera makes a massive zoom out to reveal the multiple dimensions of Nature. Freeze the frame: half way between the infinitesimally small and the infinitesimally large, a man suspends his everyday life (hence the title "Point de Suspension", which refers to the three dots at the end of an uncompleted sentence) to take a glimpse of the place he occupies in the great history of the Universe. An unusual perspective on what it means to be a human being... This spectacle in the Globe of Science and Innovation, specially created by the Miméscope* company for the official ceremony marking CERN's fiftieth anniversary, is a gift from the Government of the Republic and Canton of Geneva, which also wishes to share this moment of wonder with the local population. There will be three performances for...

  4. "Point de suspension"

    CERN Multimedia

    2004-01-01

    http://www.cern.ch/cern50/ CERN - Globe of Science and Innovation 20 and 21 October Acrobatics, mime, a cappella singing, projections of images, a magical setting... a host of different tools of a grandeur matching that of the Universe they relate. A camera makes a massive zoom out to reveal the multiple dimensions of Nature. Freeze the frame: half way between the infinitesimally small and the infinitesimally large, a man suspends his everyday life (hence the title "Point de Suspension", which refers to the three dots at the end of an uncompleted sentence) to take a glimpse of the place he occupies in the great history of the Universe. An unusual perspective on what it means to be a human being... This wondrous show in the Globe of Science and Innovation, specially created by the Miméscope* company for the official ceremony marking CERN's fiftieth anniversary, is a gift from the Government of the Republic and Canton of Geneva, which also wishes to share this moment of wonder with the local pop...

  5. "Point de suspension"

    CERN Multimedia

    2004-01-01

    CERN - Globe of Science and Innovation 20 and 21 October Acrobatics, mime, a cappella singing, projections of images, a magical setting... a host of different tools of a grandeur matching that of the Universe they relate. A camera makes a massive zoom out to reveal the multiple dimensions of Nature. Freeze the frame: half way between the infinitesimally small and the infinitesimally large, a man suspends his everyday life (hence the title "Point de Suspension", which refers to the three dots at the end of an uncompleted sentence) to take a glimpse of the place he occupies in the great history of the Universe. An unusual perspective on what it means to be a human being... This wondrous show in the Globe of Science and Innovation, specially created by the Miméscope* company for the official ceremony marking CERN's fiftieth anniversary, is a gift from the Government of the Republic and Canton of Geneva, which also wishes to share this moment of wonder with the local population. There will be three perfo...

  6. Function Point Analysis Depot

    Science.gov (United States)

    Muniz, R.; Martinez, El; Szafran, J.; Dalton, A.

    2011-01-01

    The Function Point Analysis (FPA) Depot is a web application originally designed by one of the NE-C3 branch's engineers, Jamie Szafran, and created specifically for the Software Development team of the Launch Control Systems (LCS) project. The application consists of evaluating the work of each developer to be able to get a real estimate of the hours that is going to be assigned to a specific task of development. The Architect Team had made design change requests for the depot to change the schema of the application's information; that information, changed in the database, needed to be changed in the graphical user interface (GUI) (written in Ruby on Rails (RoR and the web service/server side in Java to match the database changes. These changes were made by two interns from NE-C, Ricardo Muniz from NE-C3, who made all the schema changes for the GUI in RoR and Edwin Martinez, from NE-C2, who made all the changes in the Java side.

  7. The CAMAC logic state analyser

    CERN Document Server

    Centro, Sandro

    1981-01-01

    Summary form only given, as follows. Large electronic experiments using distributed processors for parallel readout and data reduction need to analyse the data acquisition components status and monitor dead time constants of each active readout module and processor. For the UA1 experiment, a microprocessor-based CAMAC logic status analyser (CLSA) has been developed in order to implement these functions autonomously. CLSA is a single unit CAMAC module, able to record, up to 256 times, the logic status of 32 TTL inputs gated by a common clock, internal or external, with a maximum frequency of 2 MHz. The data stored in the internal CLSA memory can be read directly via CAMAC function or preprocessed by CLSA 6800 microprocessor. The 6800 resident firmware (4Kbyte) expands the module features to include an interactive monitor, data recording control, data reduction and histogram accumulation with statistics parameter evaluation. The microprocessor memory and the resident firmware can be externally extended using st...

  8. Workload analyse of assembling process

    Science.gov (United States)

    Ghenghea, L. D.

    2015-11-01

    The workload is the most important indicator for managers responsible of industrial technological processes no matter if these are automated, mechanized or simply manual in each case, machines or workers will be in the focus of workload measurements. The paper deals with workload analyses made to a most part manual assembling technology for roller bearings assembling process, executed in a big company, with integrated bearings manufacturing processes. In this analyses the delay sample technique have been used to identify and divide all bearing assemblers activities, to get information about time parts from 480 minutes day work time that workers allow to each activity. The developed study shows some ways to increase the process productivity without supplementary investments and also indicated the process automation could be the solution to gain maximum productivity.

  9. Analyse du discours et archive

    OpenAIRE

    Maingueneau, Dominique

    2007-01-01

    Les recherches qui se réclament de "l’analyse du discours" connaissent un développement considérable dans le monde entier ; en revanche, "l’école française d’analyse du discours" (AD) traverse une crise d’identité depuis le début des années 80. Dans cet exposé nous voudrions explorer les raisons de cette crise, puis préciser le concept d’archive qui, à notre sens, permet de prolonger la voie ouverte à la fin des années 1960. Mais il ne s’agit que d’une des voies possibles, dès lors que, comme...

  10. Analysing Protocol Stacks for Services

    DEFF Research Database (Denmark)

    Gao, Han; Nielson, Flemming; Nielson, Hanne Riis

    2011-01-01

    We show an approach, CaPiTo, to model service-oriented applications using process algebras such that, on the one hand, we can achieve a certain level of abstraction without being overwhelmed by the underlying implementation details and, on the other hand, we respect the concrete industrial standa...... financial case study taken from Chapter 0-3. Finally, we develop a static analysis to analyse the security properties as they emerge at the level of concrete industrial protocols....

  11. Tematisk analyse af amerikansk hiphop

    OpenAIRE

    Tranberg-Hansen, Katrine; Bøgh Larsen, Cecilie; Jeppsson,Louise Emilie; Lindberg Kirkegaard, Nanna; Funch Madsen, Signe; Bülow Bach, Maria

    2013-01-01

    This paper examines the possible development in the function of American hiphop. It focuses on specific themes like ghetto, freedom, rebellion, and racial discrimination in hiphop music. To investigate this possible development two text analysis methods are used: a pragmatic and a stylistic text analysis, and a historical method is used: a source criticism. A minimal amount of literature has been published on how hiphop culture arose. The-­‐ se studies, however, make it possible to analyse...

  12. Network competition - the co-existence of hub-and-spoke and point-to-point

    OpenAIRE

    Alderighi, Marco; Cento, Alessandro; Nijkamp, Peter; Rietveld, Piet

    2005-01-01

    Airlines network choices are analysed to describe the co-existence of alternative business models: the full service model based on the hub-and-spoke (HS) system and the low cost model based on point-to-point (PP) system. The analysis is carried on both theoretically and empirically. In the theoretical part, we show that the rise of the low costs business model can be the consequence of a simple two-player game. When two carriers compete in designing their network configurations (HS or PP), as...

  13. Biological aerosol warner and analyser

    Science.gov (United States)

    Schlemmer, Harry; Kürbitz, Gunther; Miethe, Peter; Spieweck, Michael

    2006-05-01

    The development of an integrated sensor device BiSAM (Biological Sampling and Analysing Module) is presented which is designed for rapid detection of aerosol or dust particles potentially loaded with biological warfare agents. All functional steps from aerosol collection via immuno analysis to display of results are fully automated. The core component of the sensor device is an ultra sensitive rapid analyser PBA (Portable Benchtop Analyser) based on a 3 dimensional immuno filtration column of large internal area, Poly HRP marker technology and kinetic optical detection. High sensitivity despite of the short measuring time, high chemical stability of the micro column and robustness against interferents make the PBA an ideal tool for fielded sensor devices. It is especially favourable to combine the PBA with a bio collector because virtually no sample preparation is necessary. Overall, the BiSAM device is capable to detect and identify living micro organisms (bacteria, spores, viruses) as well as toxins in a measuring cycle of typically half an hour duration. In each batch up to 12 different tests can be run in parallel together with positive and negative controls to keep the false alarm rate low.

  14. Zero-point energy

    International Nuclear Information System (INIS)

    Recently, investigations of novel non-conventional sources of energy and propulsion technologies have led to the belief that vacuum fluctuations or zero-point energy (ZPE) can be tapped as an additional prime mover alongside fusion, fission, hydrocarbons, hydropower, geothermal and solar-based technologies. Only a handful of researchers have seriously investigated the possible use of vacuum fluctuation energy for power production and gravitational interaction and suggested methods of experimentation, among them, Vallee, Puthoff, Tchernetsky, and Alzofon. In theories ranging from advanced semi-classical treatments to quantum electrodynamics (QED) and dynamic nuclear orientation, they suggest several more or less practical approaches to interacting with vacuum fluctuation energy which may be undertaken with today's technology. Notwithstanding the paucity of consistent, repeatable results directly attributable to vacuum interactions, it is possible to outline the engineering tools and techniques required to begin to investigate ZPE. Extremely high frequency oscillations at high field strengths (Vallee), highly non-linear plasmas or arcs (Tchernetsky), super-high charge concentrations or field gradients (Puthoff), and dynamic magnetic resonance cooling of nuclei (Alzofon) are prime candidates for investigation at present. The paper attempts to draw together the most practical aspects of this, which is currently at a sufficiently advance stage to allow initial experiments to be designed. Only the essentials of the theories propounded will be presented, chiefly those aspects from which real-world physical apparatus and order-of-magnitude measurements can be deduced. The work of other researchers which may have a bearing on the subject will also be briefly touched upon

  15. Performance Model of Key Points At the IPTV Networks

    Directory of Open Access Journals (Sweden)

    Snezana Tilovska

    2011-05-01

    Full Text Available In this paper we propose a new analytical model for modeling of the key points at the IPTVnetworks. This model uses Gamma distribution with Intergroup Characteristics for modeling selfsimilar nature of processes in key points of IPTV network.Enclosed Gamma Distribution results are compared with results from real measurements.Calculated discrepancies confirm that enclosed analytical model is optimal estimation model forprocess modeling of the key points at the IPTV network.The used methodology for real-time analyses of the key points at the IPTV Network is veryimportant for achieving IPTV service best performance.

  16. On Pfaffian Random Point Fields

    Science.gov (United States)

    Kargin, V.

    2014-02-01

    We study Pfaffian random point fields by using the Moore-Dyson quaternion determinants. First, we give sufficient conditions that ensure that a self-dual quaternion kernel defines a valid random point field, and then we prove a CLT for Pfaffian point fields. The proofs are based on a new quaternion extension of the Cauchy-Binet determinantal identity. In addition, we derive the Fredholm determinantal formulas for the Pfaffian point fields which use the quaternion determinant.

  17. Clinical Application of Point Diji

    Institute of Scientific and Technical Information of China (English)

    栾继萍

    2004-01-01

    @@ Diji (SP 8) is a cleft point of the Spleen Channel of Foot-Taiyang. Its indications include abdominal pain, diarrhea, edema, dysmenorrhea and certain other symptoms caused by incoordination between the liver and the spleen. Either taking the point alone or together with some other adjunct points in clinical practice, the author has obtained satisfactory curative effects.

  18. Analyses of a Virtual World

    CERN Document Server

    Holovatch, Yurij; Szell, Michael; Thurner, Stefan

    2016-01-01

    We present an overview of a series of results obtained from the analysis of human behavior in a virtual environment. We focus on the massive multiplayer online game (MMOG) Pardus which has a worldwide participant base of more than 400,000 registered players. We provide evidence for striking statistical similarities between social structures and human-action dynamics in the real and virtual worlds. In this sense MMOGs provide an extraordinary way for accurate and falsifiable studies of social phenomena. We further discuss possibilities to apply methods and concepts developed in the course of these studies to analyse oral and written narratives.

  19. Chapter No.4. Safety analyses

    International Nuclear Information System (INIS)

    In 2001 the activity in the field of safety analyses was focused on verification of the safety analyses reports for NPP V-2 Bohunice and NPP Mochovce concerning the new profiled fuel and probabilistic safety assessment study for NPP Mochovce. The calculation safety analyses were performed and expert reviews for the internal UJD needs were elaborated. An important part of work was performed also in solving of scientific and technical tasks appointed within bilateral projects of co-operation between UJD and its international partnership organisations as well as within international projects ordered and financed by the European Commission. All these activities served as an independent support for UJD in its deterministic and probabilistic safety assessment of nuclear installations. A special attention was paid to a review of probabilistic safety assessment study of level 1 for NPP Mochovce. The probabilistic safety analysis of NPP related to the full power operation was elaborated in the study and a contribution of the technical and operational improvements to the risk decreasing was quantified. A core damage frequency of the reactor was calculated and the dominant initiating events and accident sequences with the major contribution to the risk were determined. The target of the review was to determine the acceptance of the sources of input information, assumptions, models, data, analyses and obtained results, so that the probabilistic model could give a real picture of the NPP. The review of the study was performed in co-operation of UJD with the IAEA (IPSART mission) as well as with other external organisations, which were not involved in the elaboration of the reviewed document and probabilistic model of NPP. The review was made in accordance with the IAEA guidelines and methodical documents of UJD and US NRC. In the field of calculation safety analyses the UJD activity was focused on the analysis of an operational event, analyses of the selected accident scenarios

  20. Precision pointing and tracking system /PPTS/

    Science.gov (United States)

    Brown, T. K.; Leblanc, D. R.; Mettler, E.; Gaalema, S. D.

    1978-01-01

    As part of its advanced development work, JPL is developing a Precision Pointing and Tracking System (PPTS) for science platform control on unmanned planetary spacecraft. The PPTS will extend science capabilities on future missions by providing highly accurate (10 arcsec) and stable (0.2 arcsec) pointing of the platform. Key features of the design include closed-loop tracking of target bodies using an optical sensor and decoupling of spacecraft dynamics via high-bandwidth, inertially stabilized control. This paper discusses the analyses and design. Computer simulations were used to establish the feasibility of the design approach and to verify that the performance requirements can be met. A breadboard demonstration of the entire system is expected in late 1980.

  1. Homometric Point Sets and Inverse Problems

    CERN Document Server

    Grimm, Uwe

    2008-01-01

    The inverse problem of diffraction theory in essence amounts to the reconstruction of the atomic positions of a solid from its diffraction image. From a mathematical perspective, this is a notoriously difficult problem, even in the idealised situation of perfect diffraction from an infinite structure. Here, the problem is analysed via the autocorrelation measure of the underlying point set, where two point sets are called homometric when they share the same autocorrelation. For the class of mathematical quasicrystals within a given cut and project scheme, the homometry problem becomes equivalent to Matheron's covariogram problem, in the sense of determining the window from its covariogram. Although certain uniqueness results are known for convex windows, interesting examples of distinct homometric model sets already emerge in the plane. The uncertainty level increases in the presence of diffuse scattering. Already in one dimension, a mixed spectrum can be compatible with structures of different entropy. We ex...

  2. PowerPoint 2010 Bible

    CERN Document Server

    Wempen, Faithe

    2010-01-01

    Master PowerPoint and improve your presentation skills-with one book!. It's no longer enough to have slide after slide of text, bullets, and charts. It's not even enough to have good speaking skills if your PowerPoint slides bore your audience. Get the very most out of all that PowerPoint 2010 has to offer while also learning priceless tips and techniques for making good presentations in this new PowerPoint 2010 Bible. Well-known PowerPoint expert and author Faithe Wempen provides formatting tips; shows you how to work with drawings, tables, and SmartArt; introduces new collaboration tools; wa

  3. Magic Pointing for Eyewear Computers

    DEFF Research Database (Denmark)

    Jalaliniya, Shahram; Mardanbegi, Diako; Pederson, Thomas

    In this paper, we propose a combination of head and eye movements for touchlessly controlling the "mouse pointer" on eyewear devices, exploiting the speed of eye pointing and accuracy of head pointing. The method is a wearable computer-targeted variation of the original MAGIC pointing approach...... which combined gaze tracking with a classical mouse device. The result of our experiment shows that the combination of eye and head movements is faster than head pointing for far targets and more accurate than eye pointing....

  4. Imaging study on acupuncture points

    Science.gov (United States)

    Yan, X. H.; Zhang, X. Y.; Liu, C. L.; Dang, R. S.; Ando, M.; Sugiyama, H.; Chen, H. S.; Ding, G. H.

    2009-09-01

    The topographic structures of acupuncture points were investigated by using the synchrotron radiation based Dark Field Image (DFI) method. Four following acupuncture points were studied: Sanyinjiao, Neiguan, Zusanli and Tianshu. We have found that at acupuncture point regions there exists the accumulation of micro-vessels. The images taken in the surrounding tissue out of the acupuncture points do not show such kind of structure. It is the first time to reveal directly the specific structure of acupuncture points by X-ray imaging.

  5. Imaging study on acupuncture points

    International Nuclear Information System (INIS)

    The topographic structures of acupuncture points were investigated by using the synchrotron radiation based Dark Field Image (DFI) method. Four following acupuncture points were studied: Sanyinjiao, Neiguan, Zusanli and Tianshu. We have found that at acupuncture point regions there exists the accumulation of micro-vessels. The images taken in the surrounding tissue out of the acupuncture points do not show such kind of structure. It is the first time to reveal directly the specific structure of acupuncture points by X-ray imaging.

  6. Dendrite maps whose every periodic point is a fixed point

    International Nuclear Information System (INIS)

    Let D be a dendrite and f:D⟶D be a continuous map. In this note, we show: (1) Every periodic point of f is a fixed point of f if and only if fn(x) and f(x) are contained in the same connected component of D-{x} for any x∈D with f(x)≠x and any natural number n. (2) If {fn(x)}n=1∞ is convergent for any x∈D, then every periodic point of f is a fixed point of f. Besides, we construct a dendrite D and a continuous map f from D to D which every periodic point is a fixed point but {fn(x)}n=1∞ is not convergent for some x∈D

  7. From gestural pointing to vocal pointing in the brain

    OpenAIRE

    Loevenbruck, Hélène; Dohen, Marion; Vilain, Coriandre

    2008-01-01

    International audience Deixis, or pointing, is the ability to draw the viewer/listener's attention to an object, a person, a direction or an event. Pointing is involved at different stages of human communication development, in multiple modalities: first with the eyes, then with the finger, then with intonation and finally with syntax. It is ubiquitous and probably universal in human interactions. The role of index-finger pointing in language acquisition suggests that it may be a precursor...

  8. A point's point of view of stringy geometry

    International Nuclear Information System (INIS)

    The notion of a 'point' is essential to describe the topology of spacetime. Despite this, a point probably does not play a particularly distinguished role in any intrinsic formulation of string theory. We discuss one way to try to determine the notion of a point from a worldsheet point of view. The derived category description of D-branes is the key tool. The case of a flop is analyzed and Π-stability in this context is tied in to some ideas of Bridgeland. Monodromy associated to the flop is also computed via Π-stability and shown to be consistent with previous conjectures. (author)

  9. Point to point processing of digital images using parallel computing

    Directory of Open Access Journals (Sweden)

    Eric Olmedo

    2012-05-01

    Full Text Available This paper presents an approach the point to point processing of digital images using parallel computing, particularly for grayscale, brightening, darkening, thresholding and contrast change. The point to point technique applies a transformation to each pixel on image concurrently rather than sequentially. This approach used CUDA as parallel programming tool on a GPU in order to take advantage of all available cores. Preliminary results show that CUDA obtains better results in most of the used filters. Except in the negative filter with lower resolutions images OpenCV obtained better ones, but using images in high resolutions CUDA performance is better.

  10. HGCal Simulation Analyses for CMS

    CERN Document Server

    Bruno, Sarah Marie

    2015-01-01

    This summer, I approached the topic of fast-timing detection of photons from Higgs decays via simulation analyses, working under the supervision of Dr. Adolf Bornheim of the California Institute of Technology. My specific project focused on simulating the high granularity calorimeter for the Compact Muon Solenoid (CMS) experiment. CMS detects particles using calorimeters. The Electromagnetic Calorimeter (ECal) is arranged cylindrically to form a barrel section and two “endcaps.” Previously, both the barrel and endcap have employed lead tungstate crystal detectors, known as the “shashlik” design. The crystal detectors, however, rapidly degrade from exposure to radiation. This effect is most pronounced in the endcaps. To avoid the high expense of frequently replacing degraded detectors, it was recently decided to eliminate the endcap crystals in favor of an arrangement of silicon detectors known as the “High Granularity Calorimeter” (HGCal), while leaving the barrel detector technology unchanged. T...

  11. Computational Analyses of Arabic Morphology

    CERN Document Server

    Kiraz, G A

    1994-01-01

    This paper demonstrates how a (multi-tape) two-level formalism can be used to write two-level grammars for Arabic non-linear morphology using a high level, but computationally tractable, notation. Three illustrative grammars are provided based on CV-, moraic- and affixational analyses. These are complemented by a proposal for handling the hitherto computationally untreated problem of the broken plural. It will be shown that the best grammars for describing Arabic non-linear morphology are moraic in the case of templatic stems, and affixational in the case of a-templatic stems. The paper will demonstrate how the broken plural can be derived under two-level theory via the `implicit' derivation of the singular.

  12. Uncertainty and Sensitivity Analyses Plan

    Energy Technology Data Exchange (ETDEWEB)

    Simpson, J.C.; Ramsdell, J.V. Jr.

    1993-04-01

    Hanford Environmental Dose Reconstruction (HEDR) Project staff are developing mathematical models to be used to estimate the radiation dose that individuals may have received as a result of emissions since 1944 from the US Department of Energy's (DOE) Hanford Site near Richland, Washington. An uncertainty and sensitivity analyses plan is essential to understand and interpret the predictions from these mathematical models. This is especially true in the case of the HEDR models where the values of many parameters are unknown. This plan gives a thorough documentation of the uncertainty and hierarchical sensitivity analysis methods recommended for use on all HEDR mathematical models. The documentation includes both technical definitions and examples. In addition, an extensive demonstration of the uncertainty and sensitivity analysis process is provided using actual results from the Hanford Environmental Dose Reconstruction Integrated Codes (HEDRIC). This demonstration shows how the approaches used in the recommended plan can be adapted for all dose predictions in the HEDR Project.

  13. Economical analyses in interventional radiology

    International Nuclear Information System (INIS)

    Considerations about the relation between benefit and expenses are also gaining increasing importance in interventional radiology. This review aims at providing a survey about the published data concerning economical analyses of some of the more frequently employed interventions in radiology excluding neuroradiological and coronary interventions. Because of the relative scarcity of literature in this field, all identified articles (n=46) were included without selection for methodological quality. For a number of radiological interventions the cost-effectiveness has already been demonstrated, e.g., PTA of femoropopliteal and iliac artery stenoses, stenting of renal artery stenoses, placement of vena-cava filters, as well as metal stents in malignant biliary and esophageal obstructions. Conflicting data exist for the treatment of abdominal aortic aneurysms. So far, no analysis could be found that directly compares bypass surgery versus PTA+stent in iliac arteries. (orig.)

  14. Uncertainty and Sensitivity Analyses Plan

    International Nuclear Information System (INIS)

    Hanford Environmental Dose Reconstruction (HEDR) Project staff are developing mathematical models to be used to estimate the radiation dose that individuals may have received as a result of emissions since 1944 from the US Department of Energy's (DOE) Hanford Site near Richland, Washington. An uncertainty and sensitivity analyses plan is essential to understand and interpret the predictions from these mathematical models. This is especially true in the case of the HEDR models where the values of many parameters are unknown. This plan gives a thorough documentation of the uncertainty and hierarchical sensitivity analysis methods recommended for use on all HEDR mathematical models. The documentation includes both technical definitions and examples. In addition, an extensive demonstration of the uncertainty and sensitivity analysis process is provided using actual results from the Hanford Environmental Dose Reconstruction Integrated Codes (HEDRIC). This demonstration shows how the approaches used in the recommended plan can be adapted for all dose predictions in the HEDR Project

  15. Analyse des besoins des usagers

    OpenAIRE

    KHOUDOUR,L; LANGLAIS,A; Charpentier, C.; MOTTE,C; PIAN,C

    2002-01-01

    Il s'agit d'étendre la surveillance vidéo de l'enceinte du métro vers l'intérieur des rames. Les images captées constituent des prises de vue des événements qui se déroulent à l'intérieur des véhicules afin notamment d'améliorer la sécurité des usagers transportes. Il est possible de mémoriser les images des quelques instants précédant un incident usager, d'analyser ces images en temps différé et de mieux appréhender en temps réel le comportement des usagers face à des événements ou des consi...

  16. Analysing the Wrongness of Killing

    DEFF Research Database (Denmark)

    Di Nucci, Ezio

    2016-01-01

    This article provides an in-depth analysis of the wrongness of killing by comparing different versions of three influential views: the traditional view that killing is always wrong; the liberal view that killing is wrong if and only if the victim does not want to be killed; and Don Marquis‟ future...... of value account of the wrongness of killing. In particular, I illustrate the advantages that a basic version of the liberal view and a basic version of the future of value account have over competing alternatives. Still, ultimately none of the views analysed here are satisfactory; but the different...... reasons why those competing views fail provide important insights into the ethics of killing....

  17. Analysing performance through value creation

    Directory of Open Access Journals (Sweden)

    Adrian TRIFAN

    2015-12-01

    Full Text Available This paper draws a parallel between measuring financial performance in 2 variants: the first one using data offered by accounting, which lays emphasis on maximizing profit, and the second one which aims to create value. The traditional approach to performance is based on some indicators from accounting data: ROI, ROE, EPS. The traditional management, based on analysing the data from accounting, has shown its limits, and a new approach is needed, based on creating value. The evaluation of value based performance tries to avoid the errors due to accounting data, by using other specific indicators: EVA, MVA, TSR, CVA. The main objective is shifted from maximizing the income to maximizing the value created for shareholders. The theoretical part is accompanied by a practical analysis regarding the creation of value and an analysis of the main indicators which evaluate this concept.

  18. Analysing Old Testament poetry: Basic issues in contemporary exegesis

    Directory of Open Access Journals (Sweden)

    G. T. M. Prinsloo

    1991-08-01

    Full Text Available The wealth of publications on matters relating to Old Testament poetry is witness to the fact that this subject has become a focal point in Old Testament studies. In this paper, an overview of contemporary publications is given. The basic issues, both on the level of poetic theory and practical application, are pointed out. A tendency towards a comprehensive literary approach is definitely present and should be encouraged. Only when a poem is analysed on all levels and by all means, will the richness of its meaning be appreciated.

  19. Isotopic signatures by bulk analyses

    International Nuclear Information System (INIS)

    Los Alamos National Laboratory has developed a series of measurement techniques for identification of nuclear signatures by analyzing bulk samples. Two specific applications for isotopic fingerprinting to identify the origin of anthropogenic radioactivity in bulk samples are presented. The first example is the analyses of environmental samples collected in the US Arctic to determine the impact of dumping of radionuclides in this polar region. Analyses of sediment and biota samples indicate that for the areas sampled the anthropogenic radionuclide content of sediments was predominantly the result of the deposition of global fallout. The anthropogenic radionuclide concentrations in fish, birds and mammals were very low. It can be surmised that marine food chains are presently not significantly affected. The second example is isotopic fingerprinting of water and sediment samples from the Rocky Flats Facility (RFP). The largest source of anthropogenic radioactivity presently affecting surface-waters at RFP is the sediments that are currently residing in the holding ponds. One gram of sediment from a holding pond contains approximately 50 times more plutonium than 1 liter of water from the pond. Essentially 100% of the uranium in Ponds A-1 and A-2 originated as depleted uranium. The largest source of radioactivity in the terminal Ponds A-4, B-5 and C-2 was naturally occurring uranium and its decay product radium. The uranium concentrations in the waters collected from the terminal ponds contained 0.05% or less of the interim standard calculated derived concentration guide for uranium in waters available to the public. All of the radioactivity observed in soil, sediment and water samples collected at RFP was naturally occurring, the result of processes at RFP or the result of global fallout. No extraneous anthropogenic alpha, beta or gamma activities were detected. The plutonium concentrations in Pond C-2 appear to vary seasonally

  20. Design patterns for recording and analysing usage of learning systems: State of art of tracking and analysing usage

    OpenAIRE

    David, Jean-Pierre; Adam, Jean-Michel; Diagne, Fatoumata; Lejeune, Anne; Luengo, Vanda; Pernin, Jean-Philippe

    2005-01-01

    This document presents a state of art according to three aspects: use analysis in a wide point of view, tracking and analysing usages and what's on Design Pattern. The objective of this state of art is to synthetise actual works about tracking and analysing usages in order to isolate possibilities of patterns, that's the aim of DPULSE Jeirp. The work on the state of art has been organised as a collaborative task of the DPLUS members. A lot of papers and projects on this topic have been studie...

  1. Graph kernels between point clouds

    CERN Document Server

    Bach, Francis

    2007-01-01

    Point clouds are sets of points in two or three dimensions. Most kernel methods for learning on sets of points have not yet dealt with the specific geometrical invariances and practical constraints associated with point clouds in computer vision and graphics. In this paper, we present extensions of graph kernels for point clouds, which allow to use kernel methods for such ob jects as shapes, line drawings, or any three-dimensional point clouds. In order to design rich and numerically efficient kernels with as few free parameters as possible, we use kernels between covariance matrices and their factorizations on graphical models. We derive polynomial time dynamic programming recursions and present applications to recognition of handwritten digits and Chinese characters from few training examples.

  2. Fermat's point from five perspectives

    Science.gov (United States)

    Park, Jungeun; Flores, Alfinio

    2015-04-01

    The Fermat point of a triangle is the point such that minimizes the sum of the distances from that point to the three vertices. Five approaches to study the Fermat point of a triangle are presented in this article. First, students use a mechanical device using masses, strings and pulleys to study the Fermat point as the one that minimizes the potential energy of the system. Second, students use soap films between parallel planes connecting three pegs. The tension on the film will be minimal when the sum of distances is minimal. Third, students use an empirical approach, measuring distances in an interactive GeoGebra page. Fourth, students use Euclidean geometry arguments for two proofs based on the Torricelli configuration, and one using Viviani's Theorem. And fifth, the kinematic method is used to gain additional insight on the size of the angles between the segments joining the Fermat point with the vertices.

  3. Method of forming pointed structures

    Science.gov (United States)

    Pugel, Diane E. (Inventor)

    2011-01-01

    A method of forming an array of pointed structures comprises depositing a ferrofluid on a substrate, applying a magnetic field to the ferrofluid to generate an array of surface protrusions, and solidifying the surface protrusions to form the array of pointed structures. The pointed structures may have a tip radius ranging from approximately 10 nm to approximately 25 micron. Solidifying the surface protrusions may be carried out at a temperature ranging from approximately 10 degrees C. to approximately 30 degrees C.

  4. Self-Adapting Point Location

    OpenAIRE

    Castro, Pedro; Devillers, Olivier

    2009-01-01

    Point location in spatial subdivision is one of the most studied problems in computational geometry. In the case of triangulations of Rd, we revisit the problem to exploit a possible coherence between the query-points. For a single query, walking in the triangulation is a classical strategy with good practical behavior and expected complexity O(n^(1/d)) if the points are evenly distributed. For a batch of query-points, the main idea is to use previous queries to improve the current one; we co...

  5. SharePoint som applikationsplattform

    OpenAIRE

    Schedin Jigland, Johan

    2012-01-01

    SharePoint 2010 is a very complicated platform. In the following essay we try to figure out in which way SharePoint 2010 can be used as a application framework rather than retail product. Different strengths and weaknesses are considered and we try to look into which areas SharePoint 2010 is a good choice for development. SharePoint has shown to be a compentent and useble as an application framework for interactive web applications. Though it is not suitable for all applications. I would like...

  6. Glucocorticoids induce transactivation of tight junction genes occludin and claudin-5 in retinal endothelial cells via a novel cis-element.

    Science.gov (United States)

    Felinski, Edward A; Cox, Amy E; Phillips, Brett E; Antonetti, David A

    2008-06-01

    Tight junctions between vascular endothelial cells help to create the blood-brain and blood-retinal barriers. Breakdown of the retinal tight junction complex is problematic in several disease states including diabetic retinopathy. Glucocorticoids can restore and/or preserve the endothelial barrier to paracellular permeability, although the mechanism remains unclear. We show that glucocorticoid treatment of primary retinal endothelial cells increases content of the tight junction proteins occludin and claudin-5, co-incident with an increase in barrier properties of endothelial monolayers. The glucocorticoid receptor antagonist RU486 reverses both the glucocorticoid-stimulated increase in occludin content and the increase in barrier properties. Transcriptional activity from the human occludin and claudin-5 promoters increases in retinal endothelial cells upon glucocorticoid treatment, and is dependent on the glucocorticoid receptor (GR) as demonstrated by siRNA. Deletion analysis of the occludin promoter reveals a 205bp sequence responsible for the glucocorticoid response. However, this region does not possess a canonical glucocorticoid response element and does not bind to the GR in a chromatin immunoprecipitation (ChIP) assay. Mutational analysis of this region revealed a novel 40bp occludin enhancer element (OEE), containing two highly conserved regions of 10 and 13 base pairs, that is both necessary and sufficient for glucocorticoid-induced gene expression in retinal endothelial cells. These data suggest a novel mechanism for glucocorticoid induction of vascular endothelial barrier properties through increased occludin and claudin-5 gene expression. PMID:18501346

  7. A protein binding AT-rich sequence in the soybean leghemoglobin c3 promoter is a general cis element that requires proximal DNA elements to stimulate transcription

    DEFF Research Database (Denmark)

    Laursen, N B; Larsen, K; Knudsen, J Y; Hoffmann, H J; Poulsen, C; Marcker, K A; Jensen, E O

    1994-01-01

    element(s) is required for the function of NAT2 BS1. Thus, the -102 lbc3 promoter lacking the organ-specific element (-139 to -102) was not reactivated by the presence of the binding site, and the rbcS-8B promoter required sequences between -312 and -257 to be activated by NAT2 BS1. This implies that NAT2...

  8. Identification of SmtB/ArsR cis elements and proteins in archaea using the Prokaryotic InterGenic Exploration Database (PIGED

    Directory of Open Access Journals (Sweden)

    Michael Bose

    2006-01-01

    Full Text Available Microbial genome sequencing projects have revealed an apparently wide distribution of SmtB/ArsR metal-responsive transcriptional regulators among prokaryotes. Using a position-dependent weight matrix approach, prokaryotic genome sequences were screened for SmtB/ArsR DNA binding sites using data derived from intergenic sequences upstream of orthologous genes encoding these regulators. Sixty SmtB/ArsR operators linked to metal detoxification genes, including nine among various archaeal species, are predicted among 230 annotated and draft prokaryotic genome sequences. Independent multiple sequence alignments of putative operator sites and corresponding winged helix-turn-helix motifs define sequence signatures for the DNA binding activity of this SmtB/ArsR subfamily. Prediction of an archaeal SmtB/ArsR based upon these signature sequences is confirmed using purified Methanosarcina acetivorans C2A protein and electrophoretic mobility shift assays. Tools used in this study have been incorporated into a web application, the Prokaryotic InterGenic Exploration Database (PIGED; http://bioinformatics.uwp.edu/~PIGED/home.htm, facilitating comparable studies. Use of this tool and establishment of orthology based on DNA binding signatures holds promise for deciphering potential cellular roles of various archaeal winged helix-turn-helix transcriptional regulators.

  9. Identification of SmtB/ArsR cis elements and proteins in archaea using the Prokaryotic InterGenic Exploration Database (PIGED)

    OpenAIRE

    Bose, Michael; Slick, David; Sarto, Mickey J.; Roberts, David; Roberts, Jacqueline; Barber, Robert D.

    2006-01-01

    Microbial genome sequencing projects have revealed an apparently wide distribution of SmtB/ArsR metal-responsive transcriptional regulators among prokaryotes. Using a position-dependent weight matrix approach, prokaryotic genome sequences were screened for SmtB/ArsR DNA binding sites using data derived from intergenic sequences upstream of orthologous genes encoding these regulators. Sixty SmtB/ArsR operators linked...

  10. Identification of SmtB/ArsR cis elements and proteins in archaea using the Prokaryotic InterGenic Exploration Database (PIGED).

    Science.gov (United States)

    Bose, Michael; Slick, David; Sarto, Mickey J; Murphy, Patrick; Roberts, David; Roberts, Jacqueline; Barber, Robert D

    2006-08-01

    Microbial genome sequencing projects have revealed an apparently wide distribution of SmtB/ArsR metal-responsive transcriptional regulators among prokaryotes. Using a position-dependent weight matrix approach, prokaryotic genome sequences were screened for SmtB/ArsR DNA binding sites using data derived from intergenic sequences upstream of orthologous genes encoding these regulators. Sixty SmtB/ArsR operators linked to metal detoxification genes, including nine among various archaeal species, are predicted among 230 annotated and draft prokaryotic genome sequences. Independent multiple sequence alignments of putative operator sites and corresponding winged helix-turn-helix motifs define sequence signatures for the DNA binding activity of this SmtB/ArsR subfamily. Prediction of an archaeal SmtB/ArsR based upon these signature sequences is confirmed using purified Methanosarcina acetivorans C2A protein and electrophoretic mobility shift assays. Tools used in this study have been incorporated into a web application, the Prokaryotic InterGenic Exploration Database (PIGED; http://bioinformatics.uwp.edu/~PIGED/home.htm), facilitating comparable studies. Use of this tool and establishment of orthology based on DNA binding signatures holds promise for deciphering potential cellular roles of various archaeal winged helix-turn-helix transcriptional regulators. PMID:16877320

  11. Identification of SmtB/ArsR cis elements and proteins in archaea using the Prokaryotic InterGenic Exploration Database (PIGED)

    OpenAIRE

    Michael Bose; David Slick; Sarto, Mickey J.; Patrick Murphy; David Roberts; Jacqueline Roberts; Barber, Robert D.

    2006-01-01

    Microbial genome sequencing projects have revealed an apparently wide distribution of SmtB/ArsR metal-responsive transcriptional regulators among prokaryotes. Using a position-dependent weight matrix approach, prokaryotic genome sequences were screened for SmtB/ArsR DNA binding sites using data derived from intergenic sequences upstream of orthologous genes encoding these regulators. Sixty SmtB/ArsR operators linked to metal detoxification genes, including nine among various archaeal species,...

  12. Differential trypanosome surface coat regulation by a CCCH protein that co-associates with procyclin mRNA cis-elements.

    Directory of Open Access Journals (Sweden)

    Pegine Walrad

    2009-02-01

    Full Text Available The genome of Trypanosoma brucei is unusual in being regulated almost entirely at the post-transcriptional level. In terms of regulation, the best-studied genes are procyclins, which encode a family of major surface GPI-anchored glycoproteins (EP1, EP2, EP3, GPEET that show differential expression in the parasite's tsetse-fly vector. Although procyclin mRNA cis-regulatory sequences have provided the paradigm for post-transcriptional control in kinetoplastid parasites, trans-acting regulators of procyclin mRNAs are unidentified, despite intensive effort over 15 years. Here we identify the developmental regulator, TbZFP3, a CCCH-class predicted RNA binding protein, as an isoform-specific regulator of Procyclin surface coat expression in trypanosomes. We demonstrate (i that endogenous TbZFP3 shows sequence-specific co-precipitation of EP1 and GPEET, but not EP2 and EP3, procyclin mRNA isoforms, (ii that ectopic overexpression of TbZFP3 does not perturb the mRNA abundance of procyclin transcripts, but rather that (iii their protein expression is regulated in an isoform-specific manner, as evidenced by mass spectrometric analysis of the Procyclin expression signature in the transgenic cell lines. The TbZFP3 mRNA-protein complex (TbZFP3mRNP is identified as a trans-regulator of differential surface protein expression in trypanosomes. Moreover, its sequence-specific interactions with procyclin mRNAs are compatible with long-established predictions for Procyclin regulation. Combined with the known association of TbZFP3 with the translational apparatus, this study provides a long-sought missing link between surface protein cis-regulatory signals and the gene expression machinery in trypanosomes.

  13. CstF-64 and 3′-UTR cis-element determine Star-PAP specificity for target mRNA selection by excluding PAPα

    OpenAIRE

    Kandala, Divya T.; Mohan, Nimmy; A, Vivekanand; AP, Sudheesh; G, Reshmi; Laishram, Rakesh S.

    2015-01-01

    Almost all eukaryotic mRNAs have a poly (A) tail at the 3′-end. Canonical PAPs (PAPα/γ) polyadenylate nuclear pre-mRNAs. The recent identification of the non-canonical Star-PAP revealed specificity of nuclear PAPs for pre-mRNAs, yet the mechanism how Star-PAP selects mRNA targets is still elusive. Moreover, how Star-PAP target mRNAs having canonical AAUAAA signal are not regulated by PAPα is unclear. We investigate specificity mechanisms of Star-PAP that selects pre-mRNA targets for polyadeny...

  14. Regulation of tissue-specific alternative splicing: exon-specific cis-elements govern the splicing of leukocyte common antigen pre-mRNA.

    OpenAIRE

    Streuli, M; Saito, H

    1989-01-01

    Tissue-specific alternative splicing is an important mechanism for controlling gene expression. Exons 4, 5 and 6 of the human leukocyte common antigen (LCA) gene are included in B cell mRNA but excluded from thymocyte mRNA by differential splicing. In order to study this tissue-specific alternative splicing, we constructed mini-genes that contain only a few of the LCA exons and the SV40 promoter. Mouse B cells and thymocytes were transfected with these mini-gene constructs and the structures ...

  15. Remarks on Psychological Analyses of Sons and Lovers

    Institute of Scientific and Technical Information of China (English)

    杨艳微

    2007-01-01

    Sons and Lovers is considered to be D.H.Lawrene's first masterpiece. Social critique and psychological exploration are two props of creative works of D.H.Lawrence. There are two points of view in literature world about the novel Sons and Lovers: One is its critical function which criticizes the destroy of capitalistic industrial civilization to human body and mind. The other is psychological analyses. The tragedy of the characters attributes to the Oedipus complex.

  16. Defining and Analysing Resource-Aware Process Performance Indicators

    OpenAIRE

    Río Ortega, Adela del; Resinas Arias de Reyna, Manuel; Cabanillas Macías, Cristina; Ruiz Cortés, Antonio

    2013-01-01

    A key aspect to identify improvement points of the business processes (BP) of an organisation is to conduct performance management, which involves defining appropriate PPIs (Process Performance Indicators). Up to date, existing approaches to define and analyse PPIs usually focus on time and control flow aspects, leaving disregarded the organisational perspective. in this paper we extend PPINOT, a PPI metamodel, to support the definition of resource-aware PPIs in BPs enriched with resource inf...

  17. A Web-based Tool Combining Different Type Analyses

    DEFF Research Database (Denmark)

    Henriksen, Kim Steen; Gallagher, John Patrick

    2006-01-01

    both, and they can be goal-dependent or goal-independent. We describe a prototype tool that can be accessed from a web browser, allowing various type analyses to be run. The first goal of the tool is to allow the analysis results to be examined conveniently by clicking on points in the original program...... minimal "domain model" of the program with respect to the corresponding pre-interpretation, which can give more precise information than the original descriptive type....

  18. Reliability analyses used by maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Rusek, S.; Gono, R.; Kral, V.; Kratky, M. [VSB Technical Univ. of Ostrava, Poruba (Czech Republic)

    2008-07-01

    A series of studies have been conducted to analyze failures that have been experienced by most power distribution companies in the Czech Republic and in one of the Slovak Republics. The purpose was to find ways to optimize the maintenance of distribution network devices. Data was compiled to enable a comparison of results and to create a statistically more important database. Since the number of failures in the area of electrical power engineering have been rather small, the results on element reliability will only be available in several more years to come. The main challenge with reliability analysis is to find reliable and updated input data. As such, the primary task is to change the existing structure of databases of power distribution companies. These databases must be adjusted to get the input data for the calculation functions of reliability centred maintenance (RCM). This paper described the programs designed for analyses of reliability indices and the optimization of maintenance of equipment of the distribution system that will provide basic data for responsible and logical decisions regarding maintenance and basic data for the preparation of an effective maintenance schedule and the creation of a feedback system. 7 refs., 4 figs.

  19. Zamak samples analyses using EDXRF

    International Nuclear Information System (INIS)

    Zamak is a family of alloys with a base metal of zinc and alloying elements of aluminium, magnesium and copper. Among all non-ferrous metal alloys, Zamak is one that has more applications, for their physical, mechanical properties and easy ability to electrodeposition. It has good resistance to corrosion, traction, shock and wear. Its low melting point (approximately 400 deg C) allows greater durability of the mold, allowing greater production of melted series parts. Zamak can be used in several kinds of areas, such as, to produce residential and industrial locks, construction and carpentry components, refrigerators hinges and so on. It is observed that in some cases the quality of these products is not very good. The problem should be the quality of Zamak alloy purchased by the industries. One possible technique that can be used to investigate the quality of these alloys is Energy Dispersive X-ray fluorescence. In this paper we present results of eight samples of Zamak alloy by this technique and it was possible to classify Zamak alloy and verify some irregularity on these alloys. (author)

  20. Zamak samples analyses using EDXRF

    Energy Technology Data Exchange (ETDEWEB)

    Assis, J.T. de; Lima, I.; Monin, V., E-mail: joaquim@iprj.uerj.b, E-mail: inaya@iprj.uerj.b, E-mail: monin@iprj.uerj.b [Universidade do Estado do Rio de Janeiro (UERJ), Nova Friburgo, RJ (Brazil). Inst. Politecnico. Dept. de Engenharia Mecanica e Energia; Anjos, M. dos; Lopes, R.T., E-mail: ricardo@lin.ufrj.b [Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE/UFRJ), Rio de Janeiro, RJ (Brazil). Lab. de Instrumentacao Nuclear; Alves, H., E-mail: marcelin@uerj.b, E-mail: haimon.dlafis@gmail.co [Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ (Brazil). Inst. de Fisica. Dept. de Fisica Aplicada e Termodinamica

    2009-07-01

    Zamak is a family of alloys with a base metal of zinc and alloying elements of aluminium, magnesium and copper. Among all non-ferrous metal alloys, Zamak is one that has more applications, for their physical, mechanical properties and easy ability to electrodeposition. It has good resistance to corrosion, traction, shock and wear. Its low melting point (approximately 400 deg C) allows greater durability of the mold, allowing greater production of melted series parts. Zamak can be used in several kinds of areas, such as, to produce residential and industrial locks, construction and carpentry components, refrigerators hinges and so on. It is observed that in some cases the quality of these products is not very good. The problem should be the quality of Zamak alloy purchased by the industries. One possible technique that can be used to investigate the quality of these alloys is Energy Dispersive X-ray fluorescence. In this paper we present results of eight samples of Zamak alloy by this technique and it was possible to classify Zamak alloy and verify some irregularity on these alloys. (author)

  1. Target-point formation control

    NARCIS (Netherlands)

    Mou, Shaoshuai; Cao, Ming; Morse, A. Stephen

    2015-01-01

    In this paper a new distributed feedback strategy is proposed for controlling a rigid, acyclic formation of kinematic point-modeled mobile autonomous agents in the plane. The strategy makes use of a new concept called a "target point" and is applicable to any two-dimensional, acyclic formation whose

  2. Model plant Key Measurement Points

    International Nuclear Information System (INIS)

    For IAEA safeguards a Key Measurement Point is defined as the location where nuclear material appears in such a form that it may be measured to determine material flow or inventory. This presentation describes in an introductory manner the key measurement points and associated measurements for the model plant used in this training course

  3. Heilbronn problem for five points

    International Nuclear Information System (INIS)

    Put 5 points in a unit square, then there must be at least one triangle, formed by three of these points, with an area not greater than √3/9. And the upper bound √3/9 is the best. Unexpectedly, this disproves an old conjecture posed twenty years ago. (author). 15 refs, 19 figs

  4. Mathematical points as didactical ideas

    DEFF Research Database (Denmark)

    Mogensen, Arne

    2012-01-01

    Mathematics teaching in Denmark was recently recommended better organized in sequences with clear mathematical pedagogical goals and a focus on mathematical points. In this paper I define a mathematical point and inform on coding of transcripts in a video based Danish research study on grade 8...

  5. ATLAS Civil Engineering Point 1

    CERN Multimedia

    Jean-Claude Vialis

    1998-01-01

    Different phases of the PX 15 realisation to Point 1: zone of the ATLAS experiment 19-11-1998 Realisation of the Walkway for PX 15 and the putting up scaffolds 15-01-1999 Film from the surface of Point 1 and descent in the well of PX 15

  6. ATLAS Civil Engineering Point 1

    CERN Multimedia

    Jean-Claude Vialis

    1999-01-01

    Different phases of realisation to Point 1 : zone of the ATLAS experiment The ATLAS experimental area is located in Point 1, just across the main CERN entrance, in the commune of Meyrin. There people are ever so busy to finish the different infrastructures for ATLAS. Real underground video. The film has original working sound.

  7. Conditioning in spatial point processes

    DEFF Research Database (Denmark)

    Coeurjolly, Jean-Francois; Møller, Jesper; Waagepetersen, Rasmus

    This tutorial provides an introduction to conditioning in spatial point processes or so-called Palm distributions. Initially, in the context of finite point processes, we give an explicit definition of Palm distributions in terms of their density functions. Then we review Palm distributions in the...

  8. Improved Dynamic Planar Point Location

    DEFF Research Database (Denmark)

    Brodal, Gerth Stølting; Arge, Lars; Georgiadis, Loukas

    2006-01-01

    We develop the first linear-space data structures for dynamic planar point location in general subdivisions that achieve logarithmic query time and poly-logarithmic update time.......We develop the first linear-space data structures for dynamic planar point location in general subdivisions that achieve logarithmic query time and poly-logarithmic update time....

  9. Integrated Field Analyses of Thermal Springs

    Science.gov (United States)

    Shervais, K.; Young, B.; Ponce-Zepeda, M. M.; Rosove, S.

    2011-12-01

    A group of undergraduate researchers through the SURE internship offered by the Southern California Earthquake Center (SCEC) have examined thermal springs in southern Idaho, northern Utah as well as mud volcanoes in the Salton Sea, California. We used an integrated approach to estimate the setting and maximum temperature, including water chemistry, Ipad-based image and data-base management, microbiology, and gas analyses with a modified Giggenbach sampler.All springs were characterized using GISRoam (tmCogent3D). We are performing geothermometry calculations as well as comparisons with temperature gradient data on the results while also analyzing biological samples. Analyses include water temperature, pH, electrical conductivity, and TDS measured in the field. Each sample is sealed and chilled and delivered to a water lab within 12 hours.Temperatures are continuously monitored with the use of Solinst Levelogger Juniors. Through partnership with a local community college geology club, we receive results on a monthly basis and are able to process initial data earlier in order to evaluate data over a longer time span. The springs and mudpots contained microbial organisms which were analyzed using methods of single colony isolation, polymerase chain reaction, and DNA sequencing showing the impact of the organisms on the springs or vice versa. Soon we we will collect gas samples at sites that show signs of gas. This will be taken using a hybrid of the Giggenbach method and our own methods. Drawing gas samples has proven a challenge, however we devised a method to draw out gas samples utilizing the Giggenbach flask, transferring samples to glass blood sample tubes, replacing NaOH in the Giggenbach flask, and evacuating it in the field for multiple samples using a vacuum pump. We also use a floating platform devised to carry and lower a levelogger, to using an in-line fuel filter from a tractor in order to keep mud from contaminating the equipment.The use of raster

  10. Equilibrium points and bifurcation control of a chaotic system

    Institute of Scientific and Technical Information of China (English)

    Liang Cui-Xiang; Tang Jia-Shi

    2008-01-01

    Based on the Routh-Hurwitz criterion,this paper investigates the stability of a new chaotic system.State feedback controllers are designed to control the chaotic system to the unsteady equilibrium points and limit cycle.Theoretical analyses give the range of value of control parameters to stabilize the unsteady equilibrium points of the chaotic system and its critical parameter for generating Hopf bifurcation.Certain nP periodic orbits can be stabilized by parameter adjustment.Numerical simulations indicate that the method can effectively guide the system trajectories to unsteady equilibrium points and periodic orbits.

  11. NOx analyser interefence from alkenes

    Science.gov (United States)

    Bloss, W. J.; Alam, M. S.; Lee, J. D.; Vazquez, M.; Munoz, A.; Rodenas, M.

    2012-04-01

    Nitrogen oxides (NO and NO2, collectively NOx) are critical intermediates in atmospheric chemistry. NOx abundance controls the levels of the primary atmospheric oxidants OH, NO3 and O3, and regulates the ozone production which results from the degradation of volatile organic compounds. NOx are also atmospheric pollutants in their own right, and NO2 is commonly included in air quality objectives and regulations. In addition to their role in controlling ozone formation, NOx levels affect the production of other pollutants such as the lachrymator PAN, and the nitrate component of secondary aerosol particles. Consequently, accurate measurement of nitrogen oxides in the atmosphere is of major importance for understanding our atmosphere. The most widely employed approach for the measurement of NOx is chemiluminescent detection of NO2* from the NO + O3 reaction, combined with NO2 reduction by either a heated catalyst or photoconvertor. The reaction between alkenes and ozone is also chemiluminescent; therefore alkenes may contribute to the measured NOx signal, depending upon the instrumental background subtraction cycle employed. This interference has been noted previously, and indeed the effect has been used to measure both alkenes and ozone in the atmosphere. Here we report the results of a systematic investigation of the response of a selection of NOx analysers, ranging from systems used for routine air quality monitoring to atmospheric research instrumentation, to a series of alkenes ranging from ethene to the biogenic monoterpenes, as a function of conditions (co-reactants, humidity). Experiments were performed in the European Photoreactor (EUPHORE) to ensure common calibration, a common sample for the monitors, and to unequivocally confirm the alkene (via FTIR) and NO2 (via DOAS) levels present. The instrument responses ranged from negligible levels up to 10 % depending upon the alkene present and conditions used. Such interferences may be of substantial importance

  12. Building Points - MO 2014 Crawford Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  13. Building Points - MO 2014 Clinton Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  14. Building Points - MO 2014 Atchison Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  15. Building Points - MO 2014 Carroll Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  16. Building Points - MO 2014 Buchanan Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  17. Building Points - MO 2014 Dade Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  18. Building Points - MO 2014 Camden Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  19. Building Points - MO 2014 Caldwell Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  20. Building Points - MO 2014 Cedar Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  1. Building Points - MO 2014 Clay Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  2. Building Points - MO 2014 Butler Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  3. Building Points - MO 2014 Christian Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  4. Building Points - MO 2014 Barry Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  5. Building Points - MO 2014 Chariton Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  6. Building Points - MO 2014 Dallas Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  7. Building Points - MO 2014 Daviess Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  8. Building Points - MO 2014 Audrain Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  9. Building Points - MO 2014 Adair Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  10. Building Points - MO 2014 Bates Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  11. Building Points - MO 2014 Clark Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  12. Building Points - MO 2014 Benton Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  13. Building Points - MO 2014 Cass Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  14. Building Points - MO 2014 Barton Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  15. Building Points - MO 2014 Andrew Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  16. Building Points - MO 2012 Perry Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed categorized points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  17. Building Points - MO 2014 Carter Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed attributed points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  18. Building Points - MO 2012 Bollinger Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed categorized points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  19. Building Points - MO 2012 Iron Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed categorized points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  20. Building Points - MO 2012 Madison Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed categorized points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  1. Building Points - MO 2012 Cape Girardeau Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed categorized points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  2. Building Points - MO 2012 St. Genevieve Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed categorized points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  3. Building Points - MO 2012 St. Francois Structure Points (SHP)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Staff at the Geographic Resources Center placed categorized points on all roofed structures visible at a scale of 1:2000 using MSDIS-DOQQ 2008 2-foot aerial imagery...

  4. Geodetic Control Points - Multi-State Control Point Database

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — The Multi-State Control Point Database (MCPD) is a database of geodetic and mapping control covering Idaho and Montana. The control were submitted by registered...

  5. Swayless Point-to-Point Positioning of an Overhead Crane

    OpenAIRE

    Väinölä, Lassi

    2016-01-01

    In overhead cranes, a payload tends to oscillate from movements of a trolley. Oscillations cause safety issues and make positioning of the load difficult. Moreover, waiting for swaying to damp takes time, thus also reducing productivity. The aim of this thesis was to develop an algorithm which enables swayless point-to-point positioning of a crane. This thesis studies pre-computed and real-time command shaping methods which allow acceleration of the trolley to given movement speed without swa...

  6. Modeling of Landslides with the Material Point Method

    DEFF Research Database (Denmark)

    Andersen, Søren Mikkel; Andersen, Lars

    2008-01-01

    A numerical model for studying the dynamic evolution of landslides is presented. The numerical model is based on the Generalized Interpolation Material Point Method. A simplified slope with a house placed on top is analysed. An elasto-plastic material model based on the Mohr-Coulomb yield criterion...

  7. Point-to-point focusing equation for double toroidal analyzer

    International Nuclear Information System (INIS)

    Highlights: • We deduce a general and simple equation for the point-to-point focusing in the radial plane of double toroidal analyzer (DTA). • Graphically solve the equation to get the geometrical configuration of DTA for a given situation. • The obtained geometry is in good agreement with the trajectory simulation by SIMION program, which indicates that the equation is quite useful in analytically design of DTA. - Abstract: Toroidal analyzer (TA) has high detection efficiency due to the parallel measurement of the energies and the angles of charged particles in wide range. Compared to a normal TA, double toroidal analyzer (DTA) has the advantages of flat focal plane and normal incidence angles of particles onto the detector surface. However, no analytical formula is available to describe the point-to-point focusing in its radial plane. In the present work, a simple equation for the point-to-point focusing is obtained. The calculated deflection angles using this equation are in good agreement with the trajectory simulations. This indicates the equation could be quite useful for the future analytical design of DTA

  8. Pivots for Pointing: Visually-Monitored Pointing Has Higher Arm Elevations than Pointing Blindfolded

    Science.gov (United States)

    Wnuczko, Marta; Kennedy, John M.

    2011-01-01

    Observers pointing to a target viewed directly may elevate their fingertip close to the line of sight. However, pointing blindfolded, after viewing the target, they may pivot lower, from the shoulder, aligning the arm with the target as if reaching to the target. Indeed, in Experiment 1 participants elevated their arms more in visually monitored…

  9. Bearing Capacity of Spatially Random Cohesive Soil Using Numerical Limit Analyses

    OpenAIRE

    Kasama, Kiyonobu; Whittle, Andrew

    2007-01-01

    This paper describes a probabilistic study of the two dimensional bearing capacity of a vertically loaded strip footing on spatially random, cohesive soil using Numerical Limit Analyses (NLA‐CD). The analyses uses a Cholesky Decomposition (CD) technique with mid‐point discretization to represent the spatial variation in undrained shear strength within finite element meshes for both upper and lower bound analyses, and assumes an isotropic correlation length. Monte Carlo simulations are then us...

  10. PowerPoint 2013 bible

    CERN Document Server

    Wempen, Faithe

    2013-01-01

    Master PowerPoint and improve your presentation skills with one book! In today's business climate, you need to know PowerPoint inside and out, and that's not all. You also need to be able to make a presentation that makes an impact. From using sophisticated transitions and animation in your PowerPoint presentations to interfacing in person with your audience, this information-packed book helps you succeed. Start creating professional-quality slides that captivate audiences and discover essential tips and techniques for making first-rate presentations, whether you're at a podium or

  11. Tropical Fermat-Weber points

    OpenAIRE

    LIN, BO; Yoshida, Ruriko

    2016-01-01

    We investigate the computation of Fermat-Weber points under the tropical metric, motivated by its application to the space of equidistant phylogenetic trees realized as the tropical linear space of all ultrametrics. While the Fr\\'echet mean with the ${\\rm CAT}(0)$-metric of Billera-Holmes-Vogtman has been studied by many authors, the Fermat-Weber point under tropical metric in tree spaces is not well understood. In this paper we investigate the Fermat-Weber point under the tropical metric and...

  12. ATLAS Civil Engineering Point 1

    CERN Multimedia

    Jean-Claude Vialis

    1998-01-01

    Different phases of realisation to Point 1 : zone of the ATLAS experiment After watching this film you can get the view of the civil engineering work at POINT1 where the ATLAS will be built. 03-11-1998 The video starts with the view of the POINT1 taken from the roof of the building 33. 04-11-1998 View of the installation of the entrance of the SDX1 18/19-11-1998 Installation of the rafters to the building PX15

  13. ATLAS: civil engineering Point 1

    CERN Multimedia

    2000-01-01

    The construction work at point one was a massive site including overground and underground work. Point 1 under construction is worth to see.Tools and machinery used during the construction and the multible scenes with people working in different parts of point1. Scenes from the 3D CAD office and some talking in english. Printing out drawings and later views of the empty tunnel were the LHC accelerator is installed 80m under the surface.The film gives the view to the close history in other words to the time before the installations.

  14. NOTE: Do acupuncture points exist?

    Science.gov (United States)

    Yan, Xiaohui; Zhang, Xinyi; Liu, Chenglin; Dang, Ruishan; Huang, Yuying; He, Wei; Ding, Guanghong

    2009-05-01

    We used synchrotron x-ray fluorescence analysis to probe the distribution of four chemical elements in and around acupuncture points, two located in the forearm and two in the lower leg. Three of the four acupuncture points showed significantly elevated concentrations of elements Ca, Fe, Cu and Zn in relation to levels in the surrounding tissue, with similar elevation ratios for Cu and Fe. The mapped distribution of these elements implies that each acupuncture point seems to be elliptical with the long axis along the meridian.

  15. Flood frequency analyses with annual and partial flood series

    Science.gov (United States)

    Bezak, N.; Brilly, M.; Sraj, M.

    2012-04-01

    The objective of the study was (1) to analyse the influence of time scale of the data on the results, (2) to analyse the relations between discharge, volume and time of flood waves of the Sava river at Litija (Slovenia), (3) to perform flood frequency analyses of peak discharges with annual and partial data series and compare the results and (4) to explore the influence of threshold value by POT method. Calculations and analyses were made for the period 1953-2010. Daily scale data sets (considering also local maximum) were used. The flood frequency analyses were based on anual and partial data series. The differences between daily and hourly time scale data sets were explored. Daily and hourly time scale hydrographs were compared and differences were analysed. Differences were adequately small. Daily time series with included maximums were logical choice because of the length of the daily time series and because hourly time series were not continuous due to gauging equipment failures. Important objective of the study was to analyse the relationship between discharge, volume and duration of flood waves. Baseflow was separated from continuous daily discharge measurements on simple and complex hydrographs. Simple graphical method with three points was used. Many different coefficients like base flow index were calculated and different combinations of correlation coefficient of wave components were examined. Annual maximum series were used to study the relationship between wave components. Flood frequency analyses were made with annual maximum series and partial duration series. Log-normal distribution, Pearson distribution type 3, log-Pearson distribution type 3, Gumbel distribution, exponential distribution, GEV distribution and GL distribution were used for annual maximum series. Simple equation of linear transformation was used to determine the design discharge and procedure which is proposed in Flood Estimation Handbook was used with GEV and GL distribution

  16. Pawnee Nation Energy Option Analyses

    Energy Technology Data Exchange (ETDEWEB)

    Matlock, M.; Kersey, K.; Riding In, C.

    2009-07-21

    Pawnee Nation of Oklahoma Energy Option Analyses In 2003, the Pawnee Nation leadership identified the need for the tribe to comprehensively address its energy issues. During a strategic energy planning workshop a general framework was laid out and the Pawnee Nation Energy Task Force was created to work toward further development of the tribe’s energy vision. The overarching goals of the “first steps” project were to identify the most appropriate focus for its strategic energy initiatives going forward, and to provide information necessary to take the next steps in pursuit of the “best fit” energy options. Description of Activities Performed The research team reviewed existing data pertaining to the availability of biomass (focusing on woody biomass, agricultural biomass/bio-energy crops, and methane capture), solar, wind and hydropower resources on the Pawnee-owned lands. Using these data, combined with assumptions about costs and revenue streams, the research team performed preliminary feasibility assessments for each resource category. The research team also reviewed available funding resources and made recommendations to Pawnee Nation highlighting those resources with the greatest potential for financially-viable development, both in the near-term and over a longer time horizon. Findings and Recommendations Due to a lack of financial incentives for renewable energy, particularly at the state level, combined mediocre renewable energy resources, renewable energy development opportunities are limited for Pawnee Nation. However, near-term potential exists for development of solar hot water at the gym, and an exterior wood-fired boiler system at the tribe’s main administrative building. Pawnee Nation should also explore options for developing LFGTE resources in collaboration with the City of Pawnee. Significant potential may also exist for development of bio-energy resources within the next decade. Pawnee Nation representatives should closely monitor

  17. Hawaii ESI: NESTS (Nest Points)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for seabird nesting colonies in coastal Hawaii. Vector points in this data set represent locations of...

  18. Virginia ESI: REPTPT (Reptile Points)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for sea turtles in Virginia. Vector points in this data set represent nesting sites. Species-specific...

  19. Calcareous Fens - Source Feature Points

    Data.gov (United States)

    Minnesota Department of Natural Resources — Pursuant to the provisions of Minnesota Statutes, section 103G.223, this database contains points that represent calcareous fens as defined in Minnesota Rules, part...

  20. Allegheny County Cell Tower Points

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset portrays cell tower locations as points in Allegheny County. The dataset is based on outbuilding codes in the Property Assessment Parcel Database used...

  1. Control Point Generated PLS - polygons

    Data.gov (United States)

    Minnesota Department of Natural Resources — The Control Point Generated PLS layer contains line and polygon features to the 1/4 of 1/4 PLS section (approximately 40 acres) and government lot level. The layer...

  2. Articulation Points in Complex Networks

    CERN Document Server

    Tian, Liang; Shi, Da-Ning; Liu, Yang-Yu

    2016-01-01

    An articulation point in a network is a node whose removal disconnects the network. Those nodes play key roles in ensuring connectivity of many real-world networks, from infrastructure networks to protein interaction networks and terrorist communication networks. Despite their fundamental importance, a general framework of studying articulation points in complex networks is lacking. Here we develop analytical tools to study key issues pertinent to articulation points, e.g. the expected number of them and the network vulnerability against their removal, in an arbitrary complex network. We find that a greedy articulation point removal process provides us a novel perspective on the organizational principles of complex networks. Moreover, this process is associated with two fundamentally different types of percolation transitions with a rich phase diagram. Our results shed light on the design of more resilient infrastructure networks and the effective destruction of terrorist communication networks.

  3. ATLAS Civil Engineering Point 1

    CERN Multimedia

    Jean-Claude Vialis

    2001-01-01

    Different phases of realisation to Point 1: zone of the ATLAS experiment 14-02-2001Realising anchorage, isolations and scaffoldings at UX 15 18-04-2001Concreting the arch and posing the metal reinforcements at UX 15

  4. Control Point Generated PLS - lines

    Data.gov (United States)

    Minnesota Department of Natural Resources — The Control Point Generated PLS layer contains line and polygon features to the 1/4 of 1/4 PLS section (approximately 40 acres) and government lot level. The layer...

  5. Louisiana ESI: NESTS (Nest Points)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for seabird and wading bird nesting colonies in coastal Louisiana. Vector points in this data set...

  6. Parametric statistical change point analysis

    CERN Document Server

    Chen, Jie

    2000-01-01

    This work is an in-depth study of the change point problem from a general point of view and a further examination of change point analysis of the most commonly used statistical models Change point problems are encountered in such disciplines as economics, finance, medicine, psychology, signal processing, and geology, to mention only several The exposition is clear and systematic, with a great deal of introductory material included Different models are presented in each chapter, including gamma and exponential models, rarely examined thus far in the literature Other models covered in detail are the multivariate normal, univariate normal, regression, and discrete models Extensive examples throughout the text emphasize key concepts and different methodologies are used, namely the likelihood ratio criterion, and the Bayesian and information criterion approaches A comprehensive bibliography and two indices complete the study

  7. Point Lobos Rocket Launch [video

    OpenAIRE

    Yakimenko, Oleg; Naval Postgraduate School (U.S.)

    2010-01-01

    The Naval Postgraduate School (NPS) and the AIAA Point Lobos section (PLS) entered three rockets into the 2010 AIAA Young Professionals Rocket Competition (YPRC). The event took place in the Mojave Desert on Koehn Dry lakebed July 17th 2010.

  8. Nucleation of point defect agglomerates

    International Nuclear Information System (INIS)

    A theory of the agglomeration of point defects into dislocation loops and voids is formulated. A critical comparison between theory and experiment is made for nickel and copper irradiated in a high voltage electron microscope

  9. Fixed Points of abelian actions

    OpenAIRE

    Franks, John; Handel, Michael; Parwani, Kamlesh

    2006-01-01

    We prove that if $\\F$ is an abelian group of $C^1$ diffeomorphisms isotopic to the identity of a closed surface $S$ of genus at least two then there is a common fixed point for all elements of $\\F.$

  10. Some remarks on farthest points

    Czech Academy of Sciences Publication Activity Database

    Montesinos, V.; Zizler, P.; Zizler, Václav

    2011-01-01

    Roč. 105, č. 1 (2011), s. 119-131. ISSN 1578-7303 R&D Projects: GA AV ČR IAA100190901 Institutional research plan: CEZ:AV0Z10190503 Keywords : farthest points * strongly exposed points * generic differentiability * convex functions Subject RIV: BA - General Mathematics Impact factor: 0.340, year: 2011 http://link.springer.com/article/10.1007%2Fs13398-011-0012-z

  11. Epsilon Nielsen fixed point theory

    OpenAIRE

    Brown, Robert F.

    2006-01-01

    Let be a map of a compact, connected Riemannian manifold, with or without boundary. For sufficiently small, we introduce an -Nielsen number that is a lower bound for the number of fixed points of all self-maps of that are -homotopic to . We prove that there is always a map that is -homotopic to such that has exactly fixed points. We describe procedures for calculating for maps of -manifolds.

  12. ATLAS Civil Engineering Point 1

    CERN Multimedia

    Jean-Claude Vialis

    2000-01-01

    Different phases of realisation to Point 1 : zone of the ATLAS experiment The ATLAS experimental area is located in Point 1, just across the main CERN entrance, in the commune of Meyrin. There people are ever so busy to finish the different infrastructures for ATLAS. Real underground video. When passing throw the walls the succeeding can be heard and seen. The film has original working sound.

  13. ATLAS Civil Engineering Point 1

    CERN Multimedia

    Jean-Claude Vialis

    2000-01-01

    Different phases of realisation to Point 1 : zone of the ATLAS experiment The film is about the excavation work in the cavern and tunnels of ATLAS experiment in the point 1. You can see people working for iron mounting at the side of the pit where the parts of the detector will be lowered in the future. Partly the film concentrates the USA 15 and the work done there.

  14. Quasi Contraction and Fixed Points

    Directory of Open Access Journals (Sweden)

    Mohsen Alimohammady

    2012-10-01

    Full Text Available In this note, we establish and improve some results on fixed point theory in topological vector spaces. As a generalization of contraction maps, the concept of quasi contraction multivalued maps on a topological vector space will be defined. Further, it is shown that a quasi contraction and closed multivalued map on a topological vector space has a unique fixed point if it is bounded value.

  15. Developing SharePoint applications

    OpenAIRE

    Rupnik, Gašper

    2011-01-01

    The thesis includes a research on SharePoint 2010 programming capabilities and a display of products created by this knowledge. The introduction part includes background information on how the topic was chosen and how the thesis was developed. The second chapter presents the SharePoint platform, which includes a description of its structure, function and usability. The third chapter focuses solely on the programming of the platform. First, some of the most useful software tools for i...

  16. Fingerprint Reference-Point Detection

    OpenAIRE

    Liu Manhua; Jiang Xudong; Kot Alex Chichung

    2005-01-01

    A robust fingerprint recognition algorithm should tolerate the rotation and translation of the fingerprint image. One popular solution is to consistently detect a unique reference point and compute a unique reference orientation for translational and rotational alignment. This paper develops an effective algorithm to locate a reference point and compute the corresponding reference orientation consistently and accurately for all types of fingerprints. To compute the reliable orientation field...

  17. Nevanlinna Theory and Rational Points

    OpenAIRE

    Noguchi, Junjiro

    1996-01-01

    S. Lang conjectured in 1974 that a hyperbolic algebraic variety defined over a number field has only finitely many rational points, and its analogue over function fields. We discuss the Nevanlinna-Cartan theory over function fields of arbitrary dimension and apply it for Diophantine property of hyperbolic projective hypersurfaces (homogeneous Diophantine equations) constructed by Masuda-Noguchi. We also deal with the finiteness property of $S$-units points of those Diophantine equations over ...

  18. SharePoint User's Guide

    CERN Document Server

    Corporation, Infusion Development

    2009-01-01

    This straightforward guide shows SharePoint users how to create and use web sites for sharing and collaboration. Learn to use the document and picture libraries for adding and editing content, add discussion boards and surveys, receive alerts when documents and information have been added or changed, and enhance security. Designed to help you find answers quickly, the book shows how to make the most of SharePoint for productivity and collaboration.

  19. 10 CFR 436.24 - Uncertainty analyses.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uncertainty analyses. 436.24 Section 436.24 Energy... Procedures for Life Cycle Cost Analyses § 436.24 Uncertainty analyses. If particular items of cost data or... impact of uncertainty on the calculation of life cycle cost effectiveness or the assignment of rank...

  20. Point-Force Energy Coupling

    Science.gov (United States)

    Burton, Tristan; Squires, Kyle

    2005-11-01

    Fully resolved simulations of particle-laden turbulent flows are computationally expensive even with a single particle. Therefore, simulations of flows with realistic numbers of particles typically treat the disperse phase as point-particles and models are used to account for the interaction between the phases. The particle trajectories are determined using a Lagrangian particle equation of motion that accounts for the fluid forces. The effect of the particulate phase on the fluid is included using point-force momentum coupling, where the opposite of the force applied to each particle by the fluid is distributed back to fluid grid points in a local region. In this work, we perform direct numerical simulation (DNS) of a particle moving at a prescribed constant or time-dependent velocity through a stationary fluid, and use the resulting force history in a corresponding point-force simulation to study point-force energy coupling. The energy input from the moving particle and the fluid dissipation in the DNS are compared to corresponding quantities in the unresolved calculation. A range of particle Reynolds numbers and ratios of the particle diameter to the unresolved grid spacing are considered to determine the conditions under which point-force momentum coupling provides accurate energy coupling.

  1. Equilibria, Fixed Points, and Complexity Classes

    CERN Document Server

    Yannakakis, Mihalis

    2008-01-01

    Many models from a variety of areas involve the computation of an equilibrium or fixed point of some kind. Examples include Nash equilibria in games; market equilibria; computing optimal strategies and the values of competitive games (stochastic and other games); stable configurations of neural networks; analysing basic stochastic models for evolution like branching processes and for language like stochastic context-free grammars; and models that incorporate the basic primitives of probability and recursion like recursive Markov chains. It is not known whether these problems can be solved in polynomial time. There are certain common computational principles underlying different types of equilibria, which are captured by the complexity classes PLS, PPAD, and FIXP. Representative complete problems for these classes are respectively, pure Nash equilibria in games where they are guaranteed to exist, (mixed) Nash equilibria in 2-player normal form games, and (mixed) Nash equilibria in normal form games with 3 (or ...

  2. Robot positioning based on point-to-point motion capability

    Energy Technology Data Exchange (ETDEWEB)

    Park, Y. S.; Cho, H. S.; Koh, K. C.

    2000-03-20

    This paper presents an optimal search method for determining the base location of a robot manipulator so that the robot can have a designated point-to-point (PTP) motion capabilities. Based on the topological characterization of the manipulator workspace and the definitions of various p-connectivity, a computational method is developed for enumerating various PTP motion capabilities into quantitative cost functions. Then an unconstrained search by minimizing the cost function yields the task feasible location of the robot base. This methodology is useful for placement of mobile manipulators and robotic workcell layout design.

  3. Digital microwave communication engineering point-to-point microwave systems

    CERN Document Server

    Kizer, George

    2013-01-01

    The first book to cover all engineering aspects of microwave communication path design for the digital age Fixed point-to-point microwave systems provide moderate-capacity digital transmission between well-defined locations. Most popular in situations where fiber optics or satellite communication is impractical, it is commonly used for cellular or PCS site interconnectivity where digital connectivity is needed but not economically available from other sources, and in private networks where reliability is most important. Until now, no book has adequately treated all en

  4. April 2004 Lidar Point Data of Southern California Coastline: Dana Point to Point La Jolla

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data (Geodetic Coordinates) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs)...

  5. December 2002 Lidar Point Data of Southern California Coastline: Dana Point to Point La Jolla

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data (latitude and longitude) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs)...

  6. March 2003 Lidar Point Data of Southern California Coastline: Dana Point to Point La Jolla

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data (Geodetic Coordinates) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs)...

  7. The ASSET intercomparison of ozone analyses: method and first results

    Directory of Open Access Journals (Sweden)

    A. J. Geer

    2006-06-01

    method (Kalman filter, three or four dimensional variational methods, direct inversion, or system (CTM or NWP system and this in part reflects the generally good quality of the MIPAS ozone observations. Analyses based on SCIAMACHY total column are almost as good as the MIPAS analyses; analyses based on SCIAMACHY limb profiles are worse in some areas, due to problems in the SCIAMACHY retrievals.

    Using the analyses as a transfer standard, and treating MIPAS observations as point retrievals, it is seen that MIPAS is ~5% higher than HALOE in the mid and upper stratosphere and mesosphere (above 30 hPa, and of order 10% higher than ozonesonde and HALOE in the lower stratosphere (100 hPa to 30 hPa.

  8. GRATIS: Pointing and Tracking System

    Science.gov (United States)

    Seiffert, M. D.; Lubin, P. M.; Craig, W. W.; McLean, R.; Harrison, F.

    1992-12-01

    The Gamma-Ray Arc Minute Telescope Imaging System (GRATIS; see companion paper by Harrison et al.) requires a balloon-borne stabilized platform capable of 20 arc second absolute pointing accuracy. We have developed a system which uses computer-based inertial-guidance control of an azimuth-elevation pointing mechanism for the telescope. An innovative computer-based star pattern recognition system automatically generates drift corrections from an image acquired by a Peltier cooled CCD camera. The inertial guidance system provides three axis pointing information with approximately 12 arc seconds precision. This is a true inertial guidance system with gyros, accelerometers, and an integral navigational processor. The gyros have high relative pointing precision, but a slow drift component degrades their absolute accuracy. Control of the elevation position is accomplished through a torque motor that is directly coupled to the telescope. Azimuth control is accomplished through an active zero-stiction bearing at the top of the gondola and a reaction wheel at the bottom. The pointing system has been fully constructed and tested and has been mated with the telescope. We present the results of an extensive series of tracking tests.

  9. Conjugate points in Euler's elastic problem

    CERN Document Server

    Sachkov, Yu L

    2007-01-01

    For the classical Euler's elastic problem, conjugate points are described. Inflectional elasticae admit the first conjugate point between the first and the third inflection points. All the rest elasticae do not have conjugate points.

  10. Extracting Feature Curves on Point Sets

    OpenAIRE

    X. F. Pang; Pang, M.Y.; Song, Z.(Central China Normal University, Wuhan, China)

    2011-01-01

    We present an effective algorithm for detecting feature curves on point sets. Based on the local surface fitting method, our algorithm first compute the curvatures and principal directions of each point of point sets. The algorithm then extracts potential feature points according to the biggist principal curvature of the point, and evaluates the principal directions of the detected points. By projecting the points onto the principal axes of their neighborhoods, the potential feature points ar...

  11. ATLAS Civil Engineering Point 1

    CERN Multimedia

    Jean-Claude Vialis

    1999-01-01

    ATLAS Civil Engineering - Point 1 In the film you can see various stages of construction in Point 1: that is the experiment zone for ATLAS experimentation. One part of the video is filmed on the surface of Point 1. Therefore you can get the view of the hall SX 1 and the cranes. Cranes are located close to the ridge of the hall roof. The film gives you the view of the hall that covers the caps and the wells to underground cavern where the experiment will be implemented. The machinery for excavation lifts and cranes as well as the stock areas can also be seen. There are iron mounting and concrete works too

  12. Analysis of irregularly distributed points

    DEFF Research Database (Denmark)

    Hartelius, Karsten

    1996-01-01

    The present thesis is on the analysis of irregularly distributed points. The main part of the thesis is concerned with enterpolating and restoration of irregularly distribyted points. The least squares methods of kriging and Kalman filtering and the Bayesian restoration method of iterated...... described as a robust estimator which may be appled straightfor- wardly to a wide range of point patterns and processes when the correlation structure is known. We give a qualitative and quantitative comparison of kriging, Kalman filter and iterated conditional modes. The Kalman filter have in a case study...... on fusion of maps with different spatial resolution, shown to provide a powerful modelling of autocorrelated noise structures. The Kalman filter have shown to be superior to ordinary kriging in precision and computational speed. Simple kriging has same statistical properties as the Kalman filter, but...

  13. Remotely Sensed Ground Control Points

    Science.gov (United States)

    Hummel, P.

    2016-06-01

    Accurate ground control is required to georeferenced airborne and spaceborne images. The production of ortho-photogrammetric data requires ground control that is traditionally provided as Ground Control Points (GCPs) by GNSS measurements in the field. However, it can be difficult to acquire accurate ground control points due to required turn-around time, high costs or impossible access. CompassData, Inc. a specialist in ground control, has expanded its service to deliver Remotely Sensed Ground Control Points (RSGCPs®). TerraSAR-X and TanDEM-X are two satellites with such high accuracy of their orbital positions and SAR data that RSGCPs® can be produced to a sub-meter quality depending on certain parameters and circumstances. The technology and required parameters are discussed in this paper as well as the resulting accuracies.

  14. Point mass Cosmological Black Holes

    CERN Document Server

    Firouzjaee, Javad T

    2016-01-01

    Real black holes in the universe are located in the expanding accelerating background which are called the cosmological black holes. Hence, it is necessary to model these black holes in the cosmological background where the dark energy is the dominant energy. In this paper, we argue that most of the dynamical cosmological black holes can be modeled by point mass cosmological black holes. Considering the de Sitter background for the accelerating universe, we present the point mass cosmological background in the cosmological de Sitter space time. Our work also includes the point mass black holes which have charge and angular momentum. We study the mass, horizons, redshift structure and geodesics properties for these black holes.

  15. Cleaning Massive Sonar Point Clouds

    DEFF Research Database (Denmark)

    Arge, Lars Allan; Larsen, Kasper Green; Mølhave, Thomas;

    2010-01-01

    We consider the problem of automatically cleaning massive sonar data point clouds, that is, the problem of automatically removing noisy points that for example appear as a result of scans of (shoals of) fish, multiple reflections, scanner self-reflections, refraction in gas bubbles, and so on. We...... describe a new algorithm that avoids the problems of previous local-neighbourhood based algorithms. Our algorithm is theoretically I/O-efficient, that is, it is capable of efficiently processing massive sonar point clouds that do not fit in internal memory but must reside on disk. The algorithm is also...... relatively simple and thus practically efficient, partly due to the development of a new simple algorithm for computing the connected components of a graph embedded in the plane. A version of our cleaning algorithm has already been incorporated in a commercial product....

  16. Database-Driven Analyses of Astronomical Spectra

    Science.gov (United States)

    Cami, Jan

    2012-03-01

    Spectroscopy is one of the most powerful tools to study the physical properties and chemical composition of very diverse astrophysical environments. In principle, each nuclide has a unique set of spectral features; thus, establishing the presence of a specific material at astronomical distances requires no more than finding a laboratory spectrum of the right material that perfectly matches the astronomical observations. Once the presence of a substance is established, a careful analysis of the observational characteristics (wavelengths or frequencies, intensities, and line profiles) allows one to determine many physical parameters of the environment in which the substance resides, such as temperature, density, velocity, and so on. Because of this great diagnostic potential, ground-based and space-borne astronomical observatories often include instruments to carry out spectroscopic analyses of various celestial objects and events. Of particular interest is molecular spectroscopy at infrared wavelengths. From the spectroscopic point of view, molecules differ from atoms in their ability to vibrate and rotate, and quantum physics inevitably causes those motions to be quantized. The energies required to excite vibrations or rotations are such that vibrational transitions generally occur at infrared wavelengths, whereas pure rotational transitions typically occur at sub-mm wavelengths. Molecular vibration and rotation are coupled though, and thus at infrared wavelengths, one commonly observes a multitude of ro-vibrational transitions (see Figure 13.1). At lower spectral resolution, all transitions blend into one broad ro-vibrational molecular band. The isotope. Molecular spectroscopy thus allows us to see a difference of one neutron in an atomic nucleus that is located at astronomical distances! Since the detection of the first interstellar molecules (the CH [21] and CN [14] radicals), more than 150 species have been detected in space, ranging in size from diatomic

  17. Tipping Points in Texas Rivers

    Science.gov (United States)

    Phillips, Jonathan

    2016-04-01

    Anticipating geomorphic tipping points requires that we learn from the past. Major geomorphic changes in coastal plain rivers of Texas resulting in river metamorphosis or regime shifts were identified, and the major driving factors determined. Nine fluvial tipping points were identified from contemporary observations, historical records, and Quaternary reconstructions. Two of the tipping points (between general aggrading and degrading valley states) are associated with reversals in a fundamental system control (sea-level). One (stable or aggrading vs. degrading channels) is associated with an abrupt change in sediment supply due to dam construction, and two others (changes from meandering to anastomosing channel patterns, and different anastomosis styles) are similarly related to changes in sediment supply and/or transport capacity, but with additional elements of historical contingency. Three tipping points are related to avulsions. One, from a regime dominated to reoccupation of former channels to one dominated by progradation into flood basins, is driven by progressive long term filling of incised valleys. Another, nodal avulsions, are driven by disturbances associated with tectonics or listric faults. The third, avulsions and related valley metamorphosis in unfilled incised valleys, is due to fundamental dynamical instabilities within the fluvial system. This synthesis and analysis suggests that geomorphic tipping points are sometimes associated with general extrinsic or intrinsic (to the fluvial system) environmental change, independent of any disturbances or instabilities. Others are associated with natural (e.g., tectonic) or human (dams) disturbances, and still others with intrinsic geomorphic instabilities. This suggests that future tipping points will be equally diverse with respect to their drivers.

  18. SharePoint and Scrum

    OpenAIRE

    Spiik, Karl-Johan

    2014-01-01

    SharePoint is a development platform that can be used as such once it has been installed. It is efficient tool to develop especially Intranets and Extranets as well as Internet portals. Scrum is an agile project method that presents what kind of meetings and roles there should be in a project. Scrum leads the development team to design their own work, be visible to customer, and estimate their speed of doing. SharePoint complexity and Scrum method might work together. The thesis introduc...

  19. Fixed-point signal processing

    CERN Document Server

    Padgett, Wayne T

    2009-01-01

    This book is intended to fill the gap between the ""ideal precision"" digital signal processing (DSP) that is widely taught, and the limited precision implementation skills that are commonly required in fixed-point processors and field programmable gate arrays (FPGAs). These skills are often neglected at the university level, particularly for undergraduates. We have attempted to create a resource both for a DSP elective course and for the practicing engineer with a need to understand fixed-point implementation. Although we assume a background in DSP, Chapter 2 contains a review of basic theory

  20. Inflection point inflation and reheating

    Science.gov (United States)

    Choi, Soo-Min; Lee, Hyun Min

    2016-06-01

    We revisit the inflection point inflation with an extended discussion to large field values and consider the reheating effects on the inflationary predictions. Parametrizing the reheating dynamics in terms of the reheating temperature and the equation of state during reheating, we show how the observationally favored parameter space of inflection point inflation is affected by reheating dynamics. Consequently, we apply the general results to the inflation models with non-minimal coupling, such as the SM Higgs inflation and the B-L Higgs inflation.

  1. Fixed points and economic equilibria

    CERN Document Server

    Urai, Ken

    2014-01-01

    This book presents a systematic approach to problems in economic equilibrium based on fixed-point arguments and rigorous set-theoretical (axiomatic) methods. It describes the highest-level research on the classical theme, fixed points and economic equilibria, in the theory of mathematical economics, and also presents basic results in this area, especially in the general equilibrium theory and non-co-operative game theory. The arguments also contain distinguishable developments of the main theme in the homology theory for general topological spaces, in the model theory and mathematical logic, a

  2. COMMON FIXED POINT THEOREM IN

    OpenAIRE

    SYED SHAHNAWAZ ALI; JAINENDRA JAIN; ANIL RAJPUT

    2013-01-01

    The study of theory of fuzzy sets was initiated by Zadeh in 1965. Since then many authors have extended and developed the theory of fuzzy sets in the fields of topology and analysis. The notion of fuzzy metric spaces has very important applications in quantum particle physics. As a result many authors have extended the Banach’sContraction Principle to fuzzy metric spaces. Fixed point and common fixed point properties for mappings defined on fuzzy metric spaces have been studied by many author...

  3. Compressive Point Cloud Super Resolution

    OpenAIRE

    Smith, Cody S.

    2012-01-01

    Automatic target recognition (ATR) is the ability for a computer to discriminate between different objects in a scene. ATR is often performed on point cloud data from a sensor known as a Ladar. Increasing the resolution of this point cloud in order to get a more clear view of the object in a scene would be of significant interest in an ATR application. A technique to increase the resolution of a scene is known as super resolution. This technique requires many low resolution images that can...

  4. Prototyputveckling i SharePoint

    OpenAIRE

    Oscar, Furberg

    2015-01-01

    This report is about intranets and SharePoint. It explains how user’s expectations can affect an implementation of an intranet and what companies want to get out of an intranet. It’s also about risks that may occur when an intranet is developed and how to avoid these problems. SharePoint is a collaborative platform and publishing system from Microsoft that assists developers in the implementation of an intranet. The report covers a project that was intended to showcase the strengths of ShareP...

  5. Isotropic and anisotropic pointing models

    CERN Document Server

    Pál, András; Mészáros, László; Mező, György

    2015-01-01

    This paper describes an alternative approach for generating pointing models for telescopes equipped with serial kinematics, esp. equatorial or alt-az mounts. Our model construction does not exploit any assumption for the underlying physical constraints of the mount, however, one can assign various effects to the respective components of the equations. In order to recover the pointing model parameters, classical linear least squares fitting procedures can be applied. This parameterization also lacks any kind of parametric singularity. We demonstrate the efficiency of this type of model on real measurements with meter-class telescopes where the results provide a root mean square accuracy of 1.5-2 arcseconds.

  6. ELMs and strike point movements

    NARCIS (Netherlands)

    Solano, E. R.; Jachmich, S.; Villone, F.; Hawkes, N.; Corre, Y.; Alper, B.; Loarte, A.; Pitts, R.A.; Guenther, K.; Korotkov, A.; Stamp, M.; Andrew, P.; Conboy, J.; Bolzonella, T.; Kempenaars, M.; Cenedese, A.; Rachlew, E.

    2008-01-01

    A detailed study of position changes of plasma strike points before and after edge localized modes (ELMs) in JET was carried out. A hypothesis being tested is that in an ELM previously closed edge field lines would open up, releasing plasma current and leading to the formation of a new, smaller sepa

  7. Lithium hydride near melting point

    International Nuclear Information System (INIS)

    The mechanical stability of LiH crystal is studied in this paper. The instability temperature Te is found to lie above the observed melting point, in accord with computer simulation results of other materials. Several other features of LiH both in the solid and molten states are also discussed. (author). 22 refs, 4 figs

  8. A misleading Wilsonian fixed point

    OpenAIRE

    Alexandre, Jean

    2007-01-01

    We exhibit here, for a scalar theory, an apparently non-trivial Wilsonian fixed point, which surprisingly describes a free theory. This modest note is an observation which can be of interest in the framework of functional methods in Quantum Field Theory.

  9. The Philosophy of Turning Points

    DEFF Research Database (Denmark)

    Turcan, Romeo V.

    2013-01-01

    This paper introduces and discusses the concept of turning points from the ontological, epistemological, and methodological perspectives, applying it to the de-internationalization phenomenon to exemplify its deployment. As a concept that adds to the variance and complexity of the international b...

  10. ATLAS Civil Engineering Point 1

    CERN Multimedia

    2000-01-01

    Different phases of realisation to Point 1: zone of the ATLAS experiment 18-10-2000 UX 15 cavern and PX16 15-12-2000 USA 15 - UX 15 concreting the arch 14-02-2001 UX 15 - ancrages, isolation and scaffolding

  11. ATLAS: civil engineering Point 1

    CERN Multimedia

    2000-01-01

    The ATLAS experimental area is located in Point 1, just across the main CERN entrance, in the commune of Meyrin. There people are busy to finish the different infrastructures for ATLAS. Real underground video. Nice view from the surface to the cavern from the pit side - all the big machines looked very small. The film has original working sound.

  12. Fixed points of quantum gravity

    OpenAIRE

    Litim, D.F.(Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK)

    2004-01-01

    Euclidean quantum gravity is studied with renormalisation group methods. Analytical results for a non-trivial ultraviolet fixed point are found for arbitrary dimensions and gauge fixing parameter in the Einstein-Hilbert truncation. Implications for quantum gravity in four dimensions are discussed.

  13. Bounded Fixed-Point Iteration

    DEFF Research Database (Denmark)

    Nielson, Hanne Riis; Nielson, Flemming

    1992-01-01

    In the context of abstract interpretation the authors study the number of times a functional needs to be unfolded in order to give the least fixed point. For the cases of total or monotone functions they obtain an exponential bound and in the case of strict and additive (or distributive) functions...

  14. Economische analyse van de Nederlandse biotechnologiesector

    OpenAIRE

    Giessen, A.M. van der; Gijsbers, G.W.; Koops, R.; Zee, F.A. van der

    2014-01-01

    In opdracht van de Commissie Genetische Modificatie (COGEM) heeft TNO een deskstudie uitgevoerd getiteld “Economische analyse van de Nederlandse biotechnologiesector”. Deze analyse is één van de voorstudies die de COGEM laat uitvoeren als voorbereiding op de Trendanalyse Biotechnologie, die naar verwachting in 2015 zal worden uitgevoerd. Voor deze analyse heeft de COGEM aan TNO gevraagd ontwikkelingen, trends en kansen van de biotechnologie opnieuw in kaart te brengen, met een nadruk op econo...

  15. Comparative Analyses Of Multi-Frequency PSI Ground Deformation Measurements

    Science.gov (United States)

    Duro, Javier; Sabater, Jose R.; Albiol, David; Koudogbo, Fifame N.; Arnaud, Alain

    2012-01-01

    In recent years many new developments have been made in the field of SAR image analysis. The wider diversity of available SAR imagery gives the possibility of covering wide ranges of applications in the domain of ground motion monitoring for risk management and damage assessment. The work proposed is based on the evaluation of differences in ground deformation measurements derived from multi-frequency PSI analyses. The objectives of the project are the derivation of rules and the definition of criteria for the selection of the appropriate SAR sensor for a particular type of region of interest. Key selection factors are the satellite characteristics (operating frequency, spatial resolution, and revisit time), the geographic localization of AOI, the land cover type and the extension of the monitoring period. All presented InSAR analyses have been performed using the Stable Point Network (SPN) PSI software developed by Altamira Information [1].

  16. Determine point-to-point networking interactions using regular expressions

    Directory of Open Access Journals (Sweden)

    Konstantin S. Deev

    2015-06-01

    Full Text Available As Internet growth and becoming more popular, the number of concurrent data flows start to increasing, which makes sense in bandwidth requested. Providers and corporate customers need ability to identify point-to-point interactions. The best is to use special software and hardware implementations that distribute the load in the internals of the complex, using the principles and approaches, in particular, described in this paper. This paper represent the principles of building system, which searches for a regular expression match using computing on graphics adapter in server station. A significant computing power and capability to parallel execution on modern graphic processor allows inspection of large amounts of data through sets of rules. Using the specified characteristics can lead to increased computing power in 30…40 times compared to the same setups on the central processing unit. The potential increase in bandwidth capacity could be used in systems that provide packet analysis, firewalls and network anomaly detectors.

  17. 49 CFR 1180.7 - Market analyses.

    Science.gov (United States)

    2010-10-01

    ... OF TRANSPORTATION RULES OF PRACTICE RAILROAD ACQUISITION, CONTROL, MERGER, CONSOLIDATION PROJECT, TRACKAGE RIGHTS, AND LEASE PROCEDURES General Acquisition Procedures § 1180.7 Market analyses. (a)...

  18. [Anne Arold. Kontrastive Analyse...] / Paul Alvre

    Index Scriptorium Estoniae

    Alvre, Paul, 1921-2008

    2001-01-01

    Arvustus: Arold, Anne. Kontrastive analyse der Wortbildungsmuster im Deutschen und im Estnischen (am Beispiel der Aussehensadjektive). Tartu, 2000. (Dissertationes philologiae germanicae Universitatis Tartuensis)

  19. Lidar point cloud and stereo image point cloud fusion

    OpenAIRE

    Basgall, Paul L.

    2013-01-01

    Approved for public release; distribution is unlimited The advent of Light Detection and Ranging (LiDAR) point cloud collection has significantly improved the ability to model the world in precise, fine, three-dimensional details. The objective of this research was to demonstrate accurate, foundation methods for fusing LiDAR data and photogrammetric imagery and their potential for change detection. The scope of the project was to investigate optical image to LiDAR registration methods, foc...

  20. What's the point: Semantic segmentation with point supervision

    OpenAIRE

    Bearman, Amy; Russakovsky, Olga; Ferrari, Vittorio; Fei-Fei, Li

    2015-01-01

    The semantic image segmentation task presents a trade-off between test accuracy and the cost of obtaining training annotations. Detailed per-pixel annotations enable training accurate models but are very expensive to obtain; image-level class labels are an order of magnitude cheaper but result in less accurate models. We take a natural step from image-level annotation towards stronger supervision: we ask annotators to point to an object if one exists. We demonstrate that this adds negligible ...

  1. An objective change point analysis of landfalling historical Atlantic hurricane numbers

    CERN Document Server

    Jewson, S; Jewson, Stephen; Penzer, Jeremy

    2006-01-01

    In previous work we have analysed the Atlantic basin hurricane number time-series to identify decadal time-scale change points. We now repeat the analysis but for US landfalling hurricanes. The results are very different.

  2. Detection and analyse of hazardous roads in rural areas

    DEFF Research Database (Denmark)

    Sørensen, Michael

    2003-01-01

    For the last period of 5-10 years the notion "Grey roads" (hazardous roads) has appeared in Danish traffic safety work and improvement of these roads has become a very important part of the traffic safety work in many countries. The problem is, that the notion never has been clearly defined, and ...... therefore there are no unambiguos methods to point out and analyse "Grey roads". In this article based on a ph.D.-project a method to detecting "Grey roads" is introduced....

  3. Human factors analyses of nuclear power plant incidents

    International Nuclear Information System (INIS)

    Human action plays vital role in occurrence and progression of many nuclear power plant incidents such as occurred in TMI-2 and Chernobyl reactors. Therefore, it is essential for ensuring safety of nuclear facilities to prevent occurrence of human error and to take proper recovery action if it occurs. It is necessary to have deep understanding of causes and mechanism of human error. For this purpose, we analysed operators behavior in seven U.S. nuclear power plant incidents from the view point of human factors. (author)

  4. Analysing seismic-source mechanisms by linear-programming methods.

    Science.gov (United States)

    Julian, B.R.

    1986-01-01

    Linear-programming methods are powerful and efficient tools for objectively analysing seismic focal mechanisms and are applicable to a wide range of problems, including tsunami warning and nuclear explosion identification. The source mechanism is represented as a point in the 6-D space of moment-tensor components. The present method can easily be extended to fit observed seismic-wave amplitudes (either signed or absolute) subject to polarity constraints, and to assess the range of mechanisms consistent with a set of measured amplitudes. -from Author

  5. Mathematical simulation of point defect interaction with grain boundaries

    International Nuclear Information System (INIS)

    Published works, where the interaction of point defects and grain boundaries was studied by mathematical simulation methods, have been analysed. Energetics of the vacancy formation both in nuclei of large-angle special grain boundaries and in lattice regions adjoining them has been considered. The data obtained permit to explain specific features of grain-boundary diffusion processes. Results of mathematical simulation of the interaction of impurity atoms and boundaries have been considered. Specific features of the helium atom interaction with large-angle grain boundaries are analysed as well

  6. Analysis on Single Point Vulnerabilities of Plant Control System

    International Nuclear Information System (INIS)

    The Plant Control System (PCS) is a system that controls pumps, valves, dampers, etc. in nuclear power plants with an OPR-1000 design. When there is a failure or spurious actuation of the critical components in the PCS, it can result in unexpected plant trips or transients. From this viewpoint, single point vulnerabilities are evaluated in detail using failure mode effect analyses (FMEA) and fault tree analyses (FTA). This evaluation demonstrates that the PCS has many vulnerable components and the analysis results are provided for OPR-1000 plants for reliability improvements that can reduce their vulnerabilities

  7. Analysis of Spatial Interpolation in the Material-Point Method

    DEFF Research Database (Denmark)

    Andersen, Søren; Andersen, Lars

    This paper analyses different types of spatial interpolation for the material-point method The interpolations include quadratic elements and cubic splines in addition to the standard linear shape functions usually applied. For the small-strain problem of a vibrating bar, the best results are...... obtained using quadratic elements. It is shown that for more complex problems, the use of partially negative shape functions is inconsistent with the material-point method in its current form, necessitating other types of interpolation such as cubic splines in order to obtain smoother representations of...

  8. GEOBIA methods for LiDAR obtained point clouds

    OpenAIRE

    Tomljenović, Ivan

    2012-01-01

    This paper critically analyses the state of the art provided in today’s scientific »market of knowledge« concerning the subject of object delineation from LiDAR obtained 3D point clouds. Such approach became a very popular subject in many scientific fields (forestry, geography, archaeology, etc.). The author will give multiple examples on how other authors deal with object extraction and delineation from 3D point clouds. He will also give a brief introduction and explanation of terms such as ...

  9. Approximate analyses of inelastic effects in pipework

    International Nuclear Information System (INIS)

    This presentation shows figures concerned with analyses of inelastic effects in pipework as follows: comparison of experimental and calculated simplified analyses results for free end rotation and for circumferential strain; interrupted stress relaxation; regenerated relaxation caused by reversed yield; buckling of straight pipe under combined bending and torsion; results of fatigues test of pipe bend

  10. Novel Algorithms for Astronomical Plate Analyses

    Indian Academy of Sciences (India)

    Rene Hudec; Lukas Hudec

    2011-03-01

    Powerful computers and dedicated software allow effective data mining and scientific analyses in astronomical plate archives. We give and discuss examples of newly developed algorithms for astronomical plate analyses, e.g., searches for optical transients, as well as for major spectral and brightness changes.

  11. Point contacts in encapsulated graphene

    International Nuclear Information System (INIS)

    We present a method to establish inner point contacts with dimensions as small as 100 nm on hexagonal boron nitride (hBN) encapsulated graphene heterostructures by pre-patterning the top-hBN in a separate step prior to dry-stacking. 2- and 4-terminal field effect measurements between different lead combinations are in qualitative agreement with an electrostatic model assuming point-like contacts. The measured contact resistances are 0.5–1.5 kΩ per contact, which is quite low for such small contacts. By applying a perpendicular magnetic field, an insulating behaviour in the quantum Hall regime was observed, as expected for inner contacts. The fabricated contacts are compatible with high mobility graphene structures and open up the field for the realization of several electron optical proposals

  12. Maximum Power Point Regulator System

    Science.gov (United States)

    Simola, J.; Savela, K.; Stenberg, J.; Tonicello, F.

    2011-10-01

    The target of the study done under the ESA contract No.17830/04/NL/EC (GSTP4) for Maximum Power Point Regulator System (MPPRS) was to investigate, design and test a modular power system (a core PCU) fulfilling requirement for maximum power transfer even after a single failure in the Power System by utilising a power concept without any potential and credible single point failure. The studied MPPRS concept is of a modular construction, able to track the MPP individually on each SA sections, maintaining its functionality and full power capability after a loss of a complete MPPR module (by utilizingN+1module).Various add-on DCDC converter topology candidates were investigated and redundancy, failure mechanisms and protection aspects were studied

  13. Sensing with Superconducting Point Contacts

    Directory of Open Access Journals (Sweden)

    Argo Nurbawono

    2012-05-01

    Full Text Available Superconducting point contacts have been used for measuring magnetic polarizations, identifying magnetic impurities, electronic structures, and even the vibrational modes of small molecules. Due to intrinsically small energy scale in the subgap structures of the supercurrent determined by the size of the superconducting energy gap, superconductors provide ultrahigh sensitivities for high resolution spectroscopies. The so-called Andreev reflection process between normal metal and superconductor carries complex and rich information which can be utilized as powerful sensor when fully exploited. In this review, we would discuss recent experimental and theoretical developments in the supercurrent transport through superconducting point contacts and their relevance to sensing applications, and we would highlight their current issues and potentials. A true utilization of the method based on Andreev reflection analysis opens up possibilities for a new class of ultrasensitive sensors.

  14. Kernel change-point detection

    CERN Document Server

    Arlot, Sylvain; Harchaoui, Zaid

    2012-01-01

    We tackle the change-point problem with data belonging to a general set. We propose a penalty for choosing the number of change-points in the kernel-based method of Harchaoui and Capp\\'e (2007). This penalty generalizes the one proposed for one dimensional signals by Lebarbier (2005). We prove it satisfies a non-asymptotic oracle inequality by showing a new concentration result in Hilbert spaces. Experiments on synthetic and real data illustrate the accuracy of our method, showing it can detect changes in the whole distribution of data, even when the mean and variance are constant. Our algorithm can also deal with data of complex nature, such as the GIST descriptors which are commonly used for video temporal segmentation.

  15. Floating Point Engine using VHDL

    Directory of Open Access Journals (Sweden)

    Najib Ghatte

    2014-02-01

    Full Text Available Floating Point arithmetic is by far the most used way of approximating real number arithmetic for performing numerical calculations on modern computers. Each computer had a different arithmetic for long time: bases, significant and exponents’ sizes, formats, etc. Each company implemented its own model and it hindered the portability between different equipments until IEEE 754 standard appeared defining a single and universal standard. This paper deals with the implementation of single precision as well as double precision floating point arithmetic adder as well as multiplier according with the IEEE 754 standard and using the hardware programming language VHDL. VHDL Codes so designed are simulated for various set of inputs and desired results are obtained. Codes are synthesized on device XC3S5000 having package as FG900 of Spartan®-3 FPGA family.

  16. ATLAS: civil engineering Point 1

    CERN Multimedia

    1998-01-01

    Different phases of the SX 15 realisation to Point 1 : zone of the ATLAS experiment 00:13:43 Realization of the concrete floor 19-10-1998 00:29:26 Putting up the metal rails for the roof 19-10-1998 00:33:42 Road alignment entering to POINT1 and in Bollot wood 27-10-1998 00:41:53 General sight of the buildings in construction Building SX gives the cover for the work at the experiment It is used to shelter the Pit and the work for the underground cavern as well as for covering the ground work with big cranes that allows the lowering of the components belonging to the detector. The hall is also used as a detector part storage and cover during the assembly. It shelters small workshops of mechanics and electronics necessary for the assembly and the maintenance of the ATLAS experiment.

  17. Turning points in reactor design

    International Nuclear Information System (INIS)

    This article provides some historical aspects on nuclear reactor design, beginning with PWR development for Naval Propulsion and the first commercial application at Yankee Rowe. Five turning points in reactor design and some safety problems associated with them are reviewed: (1) stability of Dresden-1, (2) ECCS, (3) PRA, (4) TMI-2, and (5) advanced passive LWR designs. While the emphasis is on the thermal-hydraulic aspects, the discussion is also about reactor systems

  18. Four Central Points About Coevolution

    OpenAIRE

    Thompson, John N.

    2010-01-01

    Much of evolution is about the coevolution of species with each other. In recent years, we have learned that coevolution is much more pervasive, dynamic, and relentless than we previously thought. There are four central points about coevolution that we should teach the next generation of students to help them understand the importance of the coevolutionary process in shaping the web of life. (1) Complex organisms require coevolved interactions to survive and reproduce. (2) Species-rich ecosys...

  19. Change point analysis and assessment

    DEFF Research Database (Denmark)

    Müller, Sabine; Neergaard, Helle; Ulhøi, John Parm

    2011-01-01

    The aim of this article is to develop an analytical framework for studying processes such as continuous innovation and business development in high-tech SME clusters that transcends the traditional qualitative-quantitative divide. It integrates four existing and well-recognized approaches to stud...... studying events, processes and change, mamely change-point analysis, event-history analysis, critical-incident technique and sequence analysis....

  20. ATLAS Civil Engineering Point 1

    CERN Multimedia

    Jean-Claude Vialis

    2000-01-01

    Point 1 -the zone for the ATLAS experiment. The film includes various stages of construction, especially from the pit of UX 15. Underground work includes the excavation work of the cavern, demolishing the central pillars and posing the support bars for the pit. The UX 15 - will shelter the detector itself. The cavern is located about 100 m below the surface and it is 53 m long, 30 m wide and 34.90 m high.

  1. Turning points in reactor design

    Energy Technology Data Exchange (ETDEWEB)

    Beckjord, E.S.

    1995-09-01

    This article provides some historical aspects on nuclear reactor design, beginning with PWR development for Naval Propulsion and the first commercial application at Yankee Rowe. Five turning points in reactor design and some safety problems associated with them are reviewed: (1) stability of Dresden-1, (2) ECCS, (3) PRA, (4) TMI-2, and (5) advanced passive LWR designs. While the emphasis is on the thermal-hydraulic aspects, the discussion is also about reactor systems.

  2. Interpolating point spread function anisotropy

    OpenAIRE

    Gentile, M.; Courbin, F.; Meylan, G.

    2012-01-01

    Planned wide-field weak lensing surveys are expected to reduce the statistical errors on the shear field to unprecedented levels. In contrast, systematic errors like those induced by the convolution with the point spread function (PSF) will not benefit from that scaling effect and will require very accurate modeling and correction. While numerous methods have been devised to carry out the PSF correction itself, modeling of the PSF shape and its spatial variations across the instrument field o...

  3. Change points of global temperature

    OpenAIRE

    Cahill, Niamh; Rahmstorf, Stefan; Andrew C Parnell

    2015-01-01

    We aim to address the question of whether or not there is a significant recent 'hiatus', 'pause' or 'slowdown' of global temperature rise. Using a statistical technique known as change point (CP) analysis we identify the changes in four global temperature records and estimate the rates of temperature rise before and after these changes occur. For each record the results indicate that three CPs are enough to accurately capture the variability in the data with no evidence of any detectable chan...

  4. The point of 6 sigma

    International Nuclear Information System (INIS)

    This book gives descriptions of the point of 6 sigma. These are the titles of this : what 6 sigma is, sigma conception, motor roller 3.4 ppm, centering error, 6 sigma purpose, 6 sigma principle, eight steps of innovation strategy, 6 sigma innovation strategy of easy system step, measurement standard of 6 sigma outcome, the main role of 6 sigma, acknowledgment and reword, 6 sigma characteristic, 6 sigma effect, 6 sigma application and problems which happen when 6 sigma introduces.

  5. Hinkley Point C inquiry report

    International Nuclear Information System (INIS)

    A report is presented on the Hinkley Point C nuclear power station inquiry being held in Somerset. The inquiry inspector and two others, one for and one opposing the Central Electricity Generating Board's proposed plan, will travel to Chernobyl, scene of the world's worst nuclear accident. Emergency arrangements for the county will need to be reassessed as would fire brigade cover. A number of local issues such as employment were also aired. (UK)

  6. Histograms and Associated Point Processes

    OpenAIRE

    Jacob, Pierre; Oliveira, Paulo

    1999-01-01

    Non parametric inference for point processes is approached using histograms, which provide a nice tool for the analysis of on-line data. The construction of histograms depend on a sequence of partitions, which we take to be non embedded. This is quite natural in what regards applications, but presents some theoretical problems. On another direction, we drop the usual independence assumption on the sample, replacing it by an association hypothesis. Under this setting, we study t...

  7. A fixed-point farrago

    CERN Document Server

    Shapiro, Joel H

    2016-01-01

    This text provides an introduction to some of the best-known fixed-point theorems, with an emphasis on their interactions with topics in analysis. The level of exposition increases gradually throughout the book, building from a basic requirement of undergraduate proficiency to graduate-level sophistication. Appendices provide an introduction to (or refresher on) some of the prerequisite material and exercises are integrated into the text, contributing to the volume’s ability to be used as a self-contained text. Readers will find the presentation especially useful for independent study or as a supplement to a graduate course in fixed-point theory. The material is split into four parts: the first introduces the Banach Contraction-Mapping Principle and the Brouwer Fixed-Point Theorem, along with a selection of interesting applications; the second focuses on Brouwer’s theorem and its application to John Nash’s work; the third applies Brouwer’s theorem to spaces of infinite dimension; and the fourth rests ...

  8. FLASH POINT OF CSSX SOLVENT

    International Nuclear Information System (INIS)

    The Department of Energy (DOE) identified the CSSX process as the preferred technology to remove cesium from radioactive waste solutions at the Savannah River Site (SRS). As a result, Washington Savannah River Company (WSRC) began designing and building a Modular CSSX Unit (MCU) in the SRS tank farm to process liquid waste for an interim period until the Salt Waste Processing Facility (SWPF) begins operations. Both the MCU and SWPF use the CSSX technology although the facilities differ in size and processing rate. The CSSX solvent contains four components (Table I). One component, Isopar(regsign) L, is volatile and combustible with a flash point of 144 F. Isopar(regsign) L is a mixture of primarily 10-carbon to 12-carbon branched chain hydrocarbons. Addition of the less volatile components, such as the extractant and modifier, will increase the flash point for the mixture. Researchers determined the increase by measuring the closed-cup flash point of the full solvent and of Isopar(regsign) L

  9. Detection of Slope Movement by Comparing Point Clouds Created by SFM Software

    Science.gov (United States)

    Oda, Kazuo; Hattori, Satoko; Takayama, Toko

    2016-06-01

    This paper proposes movement detection method between point clouds created by SFM software, without setting any onsite georeferenced points. SfM software, like Smart3DCaputure, PhotoScan, and Pix4D, are convenient for non-professional operator of photogrammetry, because these systems require simply specification of sequence of photos and output point clouds with colour index which corresponds to the colour of original image pixel where the point is projected. SfM software can execute aerial triangulation and create dense point clouds fully automatically. This is useful when monitoring motion of unstable slopes, or loos rocks in slopes along roads or railroads. Most of existing method, however, uses mesh-based DSM for comparing point clouds before/after movement and it cannot be applied in such cases that part of slopes forms overhangs. And in some cases movement is smaller than precision of ground control points and registering two point clouds with GCP is not appropriate. Change detection method in this paper adopts CCICP (Classification and Combined ICP) algorithm for registering point clouds before / after movement. The CCICP algorithm is a type of ICP (Iterative Closest Points) which minimizes point-to-plane, and point-to-point distances, simultaneously, and also reject incorrect correspondences based on point classification by PCA (Principle Component Analysis). Precision test shows that CCICP method can register two point clouds up to the 1 pixel size order in original images. Ground control points set in site are useful for initial setting of two point clouds. If there are no GCPs in site of slopes, initial setting is achieved by measuring feature points as ground control points in the point clouds before movement, and creating point clouds after movement with these ground control points. When the motion is rigid transformation, in case that a loose Rock is moving in slope, motion including rotation can be analysed by executing CCICP for a loose rock and

  10. Point processes with contagion and an application to credit risk

    OpenAIRE

    Dassios, Angelos; Zhao, Hongbiao

    2010-01-01

    We introduce a new point process, the dynamic contagion process, by generalising the self excited Hawkes process (with exponential decay) by Hawkes (1971) and the Cox process with shot noise intensity by Dassios and Jang (2003). Our process includes both self excited and externally excited jumps, which can be used to model the dynamic contagion impact from endogenous and exogenous factors of the underlying system. We have systematically analysed the theoretical properties of...

  11. Review of ICES sole stock MSY and reference points

    OpenAIRE

    SIMMONDS EDMUND

    2011-01-01

    Meta-analyses, applying generic methods within a species group, have benefits in terms of providing more stable estimates of FMSY reference points and estimates for individual stocks which by themselves may otherwise have insufficient data. Current ICES advice for seven sole stocks for which there is sufficient data gives Fmsy estimates which vary from 0.16 to 0.38, but these are specified for differing age ranges so are not directly comparable. Bpa is estimated for six of thes...

  12. Concavity and Efficient Points of Discrete Distributions in Probabilistic Programming

    OpenAIRE

    Dentcheva, Darinka; Prékopa, András; Ruszczynski, Andrzej

    1999-01-01

    We consider stochastic programming problems with probabilistic constraints involving integer-valued random variables. The concept of a p-efficient point of a probability distribution is used to derive various equivalent problem formulations. Next we introduce the concept of r-concave discrete probability distributions and analyse its relevance for problems under consideration. These notions are used to derive lower and upper bounds for the optimal value of probabilistically constrained stocha...

  13. Activation and Shielding Analyses in Support of the GUINEVERE Project

    International Nuclear Information System (INIS)

    The GUINEVERE facility (Generator of Uninterrupted Intense Neutrons at the lead Venus Reactor) must satisfy the nuclear safety criteria required by the Belgian safety authority to be licensed. The radiation dose and activation analyses for the nuclear safety assessment of the GUINEVERE project were performed at FZK. The concerted efforts of several European institutions were concentrated on the development and construction of a subcritical fast lead core based on the Venus water moderated reactor at the SCK-CEN site in Mol, Belgium. A Monte Carlo (MC) MCNP5 model was developed in accordance with the current design of the GUINEVERE fast lead core. The analytical MC method does not work for shielding analysis of the GUINEVERE building because of the large size of the rooms and thick concrete walls and floors. MC variance reduction techniques, such as particles splitting, Russian roulette, and point detectors were therefore applied. The JEFF-3.1 nuclear data library was used for radiation transport calculations. The activation analyses for the lead core and building materials were performed with the FISPACT-2005 inventory code and the EAF-2005 library. The neutron and photon dose rate maps were produced using MCNP track-length estimations, point detectors, and a mesh tally superimposed over the GUINEVERE geometry. The effects of D-D and D-T fusion neutron sources were estimated. (authors)

  14. Activation and Shielding Analyses in Support of the GUINEVERE Project

    Energy Technology Data Exchange (ETDEWEB)

    Serikov, A.; Fischer, U.; Mercatali, L. [Association FZK-EURATOM, KIT, Forschungszentrum Karlsruhe, P.O. Box 3640, 76021 Karlsruhe (Germany); Baeten, P.; Vittiglio, G. [SCK-CEN, Boeretang 200, B-2400 Mol (Belgium)

    2008-07-01

    The GUINEVERE facility (Generator of Uninterrupted Intense Neutrons at the lead Venus Reactor) must satisfy the nuclear safety criteria required by the Belgian safety authority to be licensed. The radiation dose and activation analyses for the nuclear safety assessment of the GUINEVERE project were performed at FZK. The concerted efforts of several European institutions were concentrated on the development and construction of a subcritical fast lead core based on the Venus water moderated reactor at the SCK-CEN site in Mol, Belgium. A Monte Carlo (MC) MCNP5 model was developed in accordance with the current design of the GUINEVERE fast lead core. The analytical MC method does not work for shielding analysis of the GUINEVERE building because of the large size of the rooms and thick concrete walls and floors. MC variance reduction techniques, such as particles splitting, Russian roulette, and point detectors were therefore applied. The JEFF-3.1 nuclear data library was used for radiation transport calculations. The activation analyses for the lead core and building materials were performed with the FISPACT-2005 inventory code and the EAF-2005 library. The neutron and photon dose rate maps were produced using MCNP track-length estimations, point detectors, and a mesh tally superimposed over the GUINEVERE geometry. The effects of D-D and D-T fusion neutron sources were estimated. (authors)

  15. Atlantic NAD 83 SLA Baseline Points

    Data.gov (United States)

    Bureau of Ocean Energy Management, Department of the Interior — This data set contains baseline points in ArcGIS shapefile format for the BOEM Atlantic Region. Baseline points are the discrete coordinate points along the...

  16. The psychological status of phonological analyses

    Directory of Open Access Journals (Sweden)

    David Eddington

    2015-09-01

    Full Text Available This paper casts doubt on the psychological relevance of many phonological analyses. There are four reasons for this: 1 theoretical adequacy does not necessarily imply psychological significance; 2 most approaches are nonempirical in that they are not subject to potential spatiotemporal falsification; 3 phonological analyses are estab­ lished with little or no recourse to the speakers of the language via experimental psy­ chology; 4 the limited base of evidence which most analyses are founded on is further cause for skepticism.

  17. L’Analyse de discours des Sociologues

    OpenAIRE

    Demailly, Lise

    2013-01-01

    Les sociologues utilisent, comme méthode d'analyse, l'analyse de discours. Des recherches, ici exposées, ont été menées sur cette méthode, ses spécificités et ses apports à la formation aux techniques d'expression (T.E.). Il ressort que le sociologue produit d'abord des discours (par l'entretien et l'observation) puis les analyse, les traite. Ces discours sont difficilement utilisables en T.E. tant ils sont saturés d'enjeux théoriques voire idéologiques.

  18. Safety analyses for the planned Konrad repository

    International Nuclear Information System (INIS)

    The safety analyses for the planned federal repository Konrad are described which serve to check and prove observance of the protection goals. The safety analyses lead to the definition of requirements for the plant and the radioactive waste. As a large number of papers dealing with the safety analyses for the repository's operation phase have already been published, the present report concentrates on the investigations into the post-operational phase which were carried out, among others, by the Bundesanstalt fur Geowissenschaften und Rohstoffe (Federal Institute for Geosciences and Natural Resources), Hanover, and the Gesellschaft fur Strahlen- and Umweltforschung (Radiological and Environmental Research Corporation), Braunschweig and Munich, on behalf of the PTB

  19. Moving Crystal Slow-Neutron Wavelength Analyser

    DEFF Research Database (Denmark)

    Buras, B.; Kjems, Jørgen

    1973-01-01

    Experimental proof that a moving single crystal can serve as a slow-neutron wavelength analyser of special features is presented. When the crystal moves with a velocity h/(2 md) (h-Planck constant, m-neutron mass, d-interplanar spacing) perpendicular to the diffracting plane and the analysed...... neutron beam is parallel to the diffracting plane, then neutrons of different wave-lengths contained in the incident beam are simultaneously diffracted under different reflection angles and recorded by a position-sensitive detector. Special features of this analysing system are briefly discussed....

  20. Point-point and point-line moving-window correlation spectroscopy and its applications

    Science.gov (United States)

    Zhou, Qun; Sun, Suqin; Zhan, Daqi; Yu, Zhiwu

    2008-07-01

    In this paper, we present a new extension of generalized two-dimensional (2D) correlation spectroscopy. Two new algorithms, namely point-point (P-P) correlation and point-line (P-L) correlation, have been introduced to do the moving-window 2D correlation (MW2D) analysis. The new method has been applied to a spectral model consisting of two different processes. The results indicate that P-P correlation spectroscopy can unveil the details and re-constitute the entire process, whilst the P-L can provide general feature of the concerned processes. Phase transition behavior of dimyristoylphosphotidylethanolamine (DMPE) has been studied using MW2D correlation spectroscopy. The newly proposed method verifies that the phase transition temperature is 56 °C, same as the result got from a differential scanning calorimeter. To illustrate the new method further, a lysine and lactose mixture has been studied under thermo perturbation. Using the P-P MW2D, the Maillard reaction of the mixture was clearly monitored, which has been very difficult using conventional display of FTIR spectra.

  1. The Point Lepreau Desktop Simulator

    International Nuclear Information System (INIS)

    The Point Lepreau Desktop Simulator runs plant process modeling software on a 266 MHz single CPU DEC Alpha computer. This same Alpha also runs the plant control computer software on an SSCI 125 emulator. An adjacent Pentium PC runs the simulator's Instructor Facility software, and communicates with the Alpha through an Ethernet. The Point Lepreau Desktop simulator is constructed to be as similar as possible to the Point Lepreau full scope training simulator. This minimizes total maintenance costs and enhances the benefits of the desktop simulator. Both simulators have the same modeling running on a single CPU in the same schedule of calculations. Both simulators have the same Instructor Facility capable of developing and executing the same lesson plans, doing the same monitoring and control of simulations, inserting all the same malfunctions, performing all the same overrides, capable of making and restoring all the same storepoints. Both simulators run the same plant control computer software - the same assembly language control programs as the power plant uses for reactor control, heat transport control, annunciation, etc. This is a higher degree of similarity between a desktop simulator and a full scope training simulator than previously reported for a computer controlled nuclear plant. The large quantity of control room hardware missing from the desktop simulator is replaced by software. The Instructor Facility panel override software of the training simulator provides the means by which devices (switches, controllers, windows, etc.) on the control room panels can be controlled and monitored in the desktop simulator. The CRT of the Alpha provides a mouse operated DCC keyboard mimic for controlling the plant control computer emulation. Two emulated RAMTEK display channels appear as windows for monitoring anything of interest on plant DCC displays, including one channel for annunciation. (author)

  2. Price points and price rigidity

    OpenAIRE

    Levy, Daniel; Lee, Dongwon; Chen, Haipeng (Allan); Kauffman, Robert,; Bergen, Mark

    2010-01-01

    We offer new evidence on the link between price points and price rigidity using two datasets. One is a large weekly transaction price dataset, covering 29 product categories over an eight-year period from a large U.S. supermarket chain. The other is from the Internet, and includes daily prices over a two-year period for 474 consumer electronic goods covering ten product categories, from 293 different Internet retailers. Across the two datasets, we find that (i) 9 is the most frequently used p...

  3. Discontinuous dynamics with grazing points

    Science.gov (United States)

    Akhmet, M. U.; Kıvılcım, A.

    2016-09-01

    Discontinuous dynamical systems with grazing solutions are discussed. The group property, continuation of solutions, continuity and smoothness of solutions are thoroughly analyzed. A variational system around a grazing solution which depends on near solutions is constructed. Orbital stability of grazing cycles is examined by linearization. Small parameter method is extended for analysis of grazing orbits, and bifurcation of cycles is observed in an example. Linearization around an equilibrium grazing point is discussed. The results can be extended on functional differential equations, partial differential equations and others. Appropriate illustrations are depicted to support the theoretical results.

  4. Emergent physics: Fermi point scenario

    CERN Document Server

    Volovik, G E

    2008-01-01

    The Fermi-point scenario of emergent gravity has the following consequences: gravity emerges together with fermionic and bosonic matter; emergent fermionic matter consists of massless Weyl fermions; emergent bosonic matter consists of gauge fields; Lorentz symmetry persists well above the Planck energy; space-time is naturally 4-dimensional; Universe is naturally flat; cosmological constant is naturally small or zero; underlying physics is based on discrete symmetries; `quantum gravity' cannot be obtained by quantization of Einstein equations; there is no contradiction between quantum mechanics and gravity; etc.

  5. Pointing and Morality in Chicago

    OpenAIRE

    McNeill, David

    1998-01-01

    The signature form of abstract deixis is the classic pointing G-hand aimed at absolutely nothing. This gesture is extremely widespread and frequent in conversational discourse.[2] A speaker says "and there was [this guy]", and flexes an index finger at a certain locus, although there is no person there. In effect, the gesture `creates' a reference, in this case an imaginary person identified as "this guy". What I am terming `abstract deixis' is, according to Bühler (1982), concrete deixis tha...

  6. 7 CFR 94.102 - Analyses available.

    Science.gov (United States)

    2010-01-01

    ... analyses for total ash, fat by acid hydrolysis, moisture, salt, protein, beta-carotene, catalase... plate count, direct microscopic count, Campylobacter, coliforms, presumptive Escherichia coli, Listeria monocytogenes, proteolytic count, psychrotrophic bacteria, Salmonella, Staphylococcus, thermoduric bacteria,...

  7. Comparison with Russian analyses of meteor impact

    Energy Technology Data Exchange (ETDEWEB)

    Canavan, G.H.

    1997-06-01

    The inversion model for meteor impacts is used to discuss Russian analyses and compare principal results. For common input parameters, the models produce consistent estimates of impactor parameters. Directions for future research are discussed and prioritized.

  8. Understanding Human Error Based on Automated Analyses

    Data.gov (United States)

    National Aeronautics and Space Administration — This is a report on a continuing study of automated analyses of experiential textual reports to gain insight into the causal factors of human errors in aviation...

  9. Anthocyanin analyses of Vaccinium fruit dietary supplements

    Science.gov (United States)

    Vaccinium fruit ingredients within dietary supplements were identified by comparisons with anthocyanin analyses of known Vaccinium profiles (demonstration of anthocyanin fingerprinting). Available Vaccinium supplements were purchased and analyzed; their anthocyanin profiles (based on HPLC separation...

  10. A digital image analyser for RIMS studies

    International Nuclear Information System (INIS)

    Resonance Ionisation Mass Spectrometry (RIMS) is now playing a vital role in various areas of physics and chemistry. A digital image analyser for quantitative analysis of RIMS experiments has been developed

  11. Analyses of steam generator collector rupture for WWER-1000 using Relap5 code

    International Nuclear Information System (INIS)

    The paper presents some of the results of analyses of an accident with a LOCA from the primary to the secondary side of a WWER-1000/320 unit. The objective of the analyses is to estimate the primary coolant to the atmosphere, to point out the necessity of a well defined operator strategy for this type of accident as well as to evaluate the possibility to diagnose the accident and to minimize the radiological impact on the environment

  12. Analyse of Principles of Corporate Social Responsibility in Food Industry in the Slovak Republic

    OpenAIRE

    Renáta Prokeinová

    2012-01-01

    The aim of the paper analyses the complexity of term corporate social responsibility from historical and present points of view, to deal with individual principles of corporate social responsibility and to map out the present situation in Slovakia. The object of practical part was to analyse the implementation of principles of corporate social responsibility in food industry. The main part is focused on the evaluation of the survey of corporate social responsibility conducted among companies ...

  13. Analyses of steam generator collector rupture for WWER-1000 using Relap5 code

    Energy Technology Data Exchange (ETDEWEB)

    Balabanov, E.; Ivanova, A. [Energoproekt, Sofia (Bulgaria)

    1995-12-31

    The paper presents some of the results of analyses of an accident with a LOCA from the primary to the secondary side of a WWER-1000/320 unit. The objective of the analyses is to estimate the primary coolant to the atmosphere, to point out the necessity of a well defined operator strategy for this type of accident as well as to evaluate the possibility to diagnose the accident and to minimize the radiological impact on the environment.

  14. Algebraic points on meromorphic curves

    CERN Document Server

    Herblot, Mathilde

    2012-01-01

    The classic Schneider-Lang theorem in transcendence theory asserts that there are only finitely many points at which algebraically independent complex meromorphic functions of finite order of growth can simultaneously take values in a number field, when satisfying a polynomial differential equation with coefficients in this given number field. In this article, we are interested in generalizing this theorem in two directions. First, instead of considering meromorphic functions on C we consider holomorphic maps on an affine curve over the field C or C_p. This extends a statement of D. Bertrand, which applies to meromorphic functions on P^1(C) or P^1(C_p) minus a finite subset of points. Secondly, we deal with algebraic values taken by the functions, instead of rational values as in the classic setting, inspired by a work of D. Bertrand. We prove a geometric statement extending those two results, using the slopes method, written in the language of Arakelov geometry. In the complex case, we recover a special case...

  15. Good Points for Diophantine Approximation

    Indian Academy of Sciences (India)

    Daniel Berend; Artūras Dubickas

    2009-09-01

    Given a sequence $(x_n)^∞_{n=1}$ of real numbers in the interval [0,1) and a sequence $(_n)^∞_{n=1}$ of positive numbers tending to zero, we consider the size of the set of numbers in [0,1] which can be `well approximated’ by terms of the first sequence, namely, those $y\\in[0,1]$ for which the inequality $|y-x_n| < _n$ holds for infinitely many positive integers . We show that the set of `well approximable’ points by a sequence $(x_n)^∞_{n=1}$, which is dense in [0,1], is `quite large’ no matter how fast the sequence $(_n)^∞_{n=1}$ converges to zero. On the other hand, for any sequence of positive numbers $(_n)^∞_{n=1}$ tending to zero, there is a well distributed sequence $(x_n)^∞_{n=1}$ in the interval [0,1] such that the set of `well approximable’ points is `quite small’.

  16. Douglas Point Generating Station Commissioning

    International Nuclear Information System (INIS)

    This paper discusses a number of the interesting experiences encountered at the Douglas Point Nuclear Power Station. Sufficient background with respect to the basic process, equipment location, and commissioning history is given so that those not familiar with the station may follow the remainder of the paper. Three commissioning philosophies followed in the commissioning of Canadian nuclear power stations are mentioned: (1) no ordinary water used for commissioning heavy-water systems: (2) fuelling machines used for initial fuel loading; (3) no portable steam-generating equipment for preliminary turbine-generator run up. Against this background the following experiences are mentioned: low power physics measurements; fuel channel replacement and faulty booster removal; heat transport pressure control; ion-exchange resin in the heat transport system; heat transport pumps; boiler level control; possible fretting of pressure tubes; turbine operation; heavy-water experience. The paper concludes by mentioning some important lessons learned from the experience to date and states confidence in the future of Douglas Point Generating Station, and future Canadian nuclear power stations. (author)

  17. Processing Terrain Point Cloud Data

    KAUST Repository

    DeVore, Ronald

    2013-01-10

    Terrain point cloud data are typically acquired through some form of Light Detection And Ranging sensing. They form a rich resource that is important in a variety of applications including navigation, line of sight, and terrain visualization. Processing terrain data has not received the attention of other forms of surface reconstruction or of image processing. The goal of terrain data processing is to convert the point cloud into a succinct representation system that is amenable to the various application demands. The present paper presents a platform for terrain processing built on the following principles: (i) measuring distortion in the Hausdorff metric, which we argue is a good match for the application demands, (ii) a multiscale representation based on tree approximation using local polynomial fitting. The basic elements held in the nodes of the tree can be efficiently encoded, transmitted, visualized, and utilized for the various target applications. Several challenges emerge because of the variable resolution of the data, missing data, occlusions, and noise. Techniques for identifying and handling these challenges are developed. © 2013 Society for Industrial and Applied Mathematics.

  18. Safety analyses for reprocessing and waste processing

    International Nuclear Information System (INIS)

    Presentation of an incident analysis of process steps of the RP, simplified considerations concerning safety, and safety analyses of the storage and solidification facilities of the RP. A release tree method is developed and tested. An incident analysis of process steps, the evaluation of the SRL-study and safety analyses of the storage and solidification facilities of the RP are performed in particular. (DG)

  19. Functional Analyses and Treatment of Precursor Behavior

    OpenAIRE

    Najdowski, Adel C; Wallace, Michele D; Ellsworth, Carrie L; MacAleese, Alicia N; Cleveland, Jackie M

    2008-01-01

    Functional analysis has been demonstrated to be an effective method to identify environmental variables that maintain problem behavior. However, there are cases when conducting functional analyses of severe problem behavior may be contraindicated. The current study applied functional analysis procedures to a class of behavior that preceded severe problem behavior (precursor behavior) and evaluated treatments based on the outcomes of the functional analyses of precursor behavior. Responding fo...

  20. Thermal Analyse sof Cross-Linked Polyethylene

    Directory of Open Access Journals (Sweden)

    Radek Polansky

    2007-01-01

    Full Text Available The paper summarizes results obtained during the structural analyses measurements (Differential Scanning Calorimetry DSC, Thermogravimetry TG, Thermomechanical analysis TMA and Fourier transform infrared spectroscopy FT-IR. The samples of cross-linked polyethylene cable insulation were tested via these analyses. The DSC and TG were carried out using simultaneous thermal analyzer TA Instruments SDT Q600 with connection of Fourier transform infrared spectrometer Nicolet 380. Thermomechanical analysis was carried out by TMA Q400EM TA Instruments apparatus.

  1. Pasteurised milk and implementation of HACCP (Hazard Analysis Critical Control Point)

    OpenAIRE

    T.B Murdiati; A. Priadi; S Rachmawati; Yuningsih

    2004-01-01

    The purpose of pasteurisation is to destroy pathogen bacteria without affecting the taste, flavor, and nutritional value. A study on the implementation of HACCP (Hazard Analysis Critical Control Point) in producing pasteurized milk was carried out in four processing unit of pasteurised milk, one in Jakarta, two in Bandung and one in Bogor. The critical control points in the production line were identified. Milk samples were collected from the critical points and were analysed for the total nu...

  2. Critical-point analysis of the liquid-vapor interfacial surface tension

    Science.gov (United States)

    Salvino, R. E.

    1990-01-01

    The interfacial surface tension of the liquid-vapor system is analyzed near the critical point in a manner similar to bulk thermodynamic critical-point analyses. This is accomplished by a critical-point analysis of the single-phase hard-wall surface tension. Both a Landau expansion and a scaling theory equation of state are investigated. Some general exponent relations are derived and, in addition, some thermodynamically defined correlation lengths are discussed.

  3. Division of Labor in Vocabulary Structure: Insights From Corpus Analyses.

    Science.gov (United States)

    Christiansen, Morten H; Monaghan, Padraic

    2016-07-01

    Psychologists have used experimental methods to study language for more than a century. However, only with the recent availability of large-scale linguistic databases has a more complete picture begun to emerge of how language is actually used, and what information is available as input to language acquisition. Analyses of such "big data" have resulted in reappraisals of key assumptions about the nature of language. As an example, we focus on corpus-based research that has shed new light on the arbitrariness of the sign: the longstanding assumption that the relationship between the sound of a word and its meaning is arbitrary. The results reveal a systematic relationship between the sound of a word and its meaning, which is stronger for early acquired words. Moreover, the analyses further uncover a systematic relationship between words and their lexical categories-nouns and verbs sound differently from each other-affecting how we learn new words and use them in sentences. Together, these results point to a division of labor between arbitrariness and systematicity in sound-meaning mappings. We conclude by arguing in favor of including "big data" analyses into the language scientist's methodological toolbox. PMID:26399384

  4. Moisture advection to the Arctic : forecasted, analysed and observed

    Science.gov (United States)

    Dufour, Ambroise; Zolina, Olga

    2015-04-01

    Besides its contribution to the Arctic hydrological budget, moisture imports from mid-latitudes are also influential on shorter time scales since water vapour advection tends to occur together with extratropical cyclones. Influx of moisture to the Arctic cause the formation of clouds that have an immediate impact on the surface energy budget especially in winter. In the long run, inaccuracies in the description of cloud cover and phase lead to temperature biases in CMIP5 models. The ECMWF workshop on polar prediction has highlighted moisture advection as one of the problematic physical processes limiting the quality of forecasts. Verifying the accuracy of medium-term forecasts is of interest beyond weather prediction : it points to the ability of models to bring adequate quantities of moisture to the Arctic when they are less constrained by observations than in analyses. In this study, we have compared forecasted moisture flux fields with analyses and observations over the period 2000-2010. ECMWF's ERA-Interim provided the forecasts, extending to ten days. For the analyses, in addition to ERA-Interim, we used the Arctic System Reanalysis whose forecast model is optimized for the polar regions and runs at high resolution (30 km). Finally, the Integrated Global Radiosonde Archive data over the Arctic allowed a validation by observations.

  5. Expected net gain data of low-template DNA analyses.

    Science.gov (United States)

    Gittelson, Simone; Steffen, Carolyn R; Coble, Michael D

    2016-09-01

    Low-template DNA analyses are affected by stochastic effects which can produce a configuration of peaks in the electropherogram (EPG) that is different from the genotype of the DNA׳s donor. A probabilistic and decision-theoretic model can quantify the expected net gain (ENG) of performing a DNA analysis by the difference between the expected value of information (EVOI) and the cost of performing the analysis. This article presents data on the ENG of performing DNA analyses of low-template DNA for a single amplification, two replicate amplifications, and for a second replicate amplification given the result of a first analysis. The data were obtained using amplification kits AmpFlSTR Identifiler Plus and Promega׳s PowerPlex 16 HS, an ABI 3130xl genetic sequencer, and Applied Biosystem׳s GeneMapper ID-X software. These data are supplementary to an original research article investigating whether a forensic DNA analyst should perform a single DNA analysis or two replicate analyses from a decision-theoretic point of view, entitled "Low-template DNA: a single DNA analysis or two replicates?" (Gittelson et al., 2016) [1]. PMID:27331117

  6. A Point-Wise Quantification of Asymmetry Using Deformation Fields

    DEFF Research Database (Denmark)

    Ólafsdóttir, Hildur; Lanche, Stephanie; Darvann, Tron Andre;

    2007-01-01

    resulting displacement vectors on the left and right side of the symmetry plane, gives a point-wise measure of asymmetry. The asymmetry measure was applied to the study of Crouzon syndrome using Micro CT scans of genetically modified mice. Crouzon syndrome is characterised by the premature fusion of cranial......This paper introduces a novel approach to quantify asymmetry in each point of a surface. The measure is based on analysing displacement vectors resulting from nonrigid image registration. A symmetric atlas, generated from control subjects is registered to a given subject image. A comparison of the...... sutures, which gives rise to a highly asymmetric growth. Quantification and localisation of this asymmetry is of high value with respect to surgery planning and treatment evaluation. Using the proposed method, asymmetry was calculated in each point of the surface of Crouzon mice and wild-type mice...

  7. Multiple tipping points and optimal repairing in interacting networks

    Science.gov (United States)

    Majdandzic, Antonio; Braunstein, Lidia A.; Curme, Chester; Vodenska, Irena; Levy-Carciente, Sary; Eugene Stanley, H.; Havlin, Shlomo

    2016-03-01

    Systems composed of many interacting dynamical networks--such as the human body with its biological networks or the global economic network consisting of regional clusters--often exhibit complicated collective dynamics. Three fundamental processes that are typically present are failure, damage spread and recovery. Here we develop a model for such systems and find a very rich phase diagram that becomes increasingly more complex as the number of interacting networks increases. In the simplest example of two interacting networks we find two critical points, four triple points, ten allowed transitions and two `forbidden' transitions, as well as complex hysteresis loops. Remarkably, we find that triple points play the dominant role in constructing the optimal repairing strategy in damaged interacting systems. To test our model, we analyse an example of real interacting financial networks and find evidence of rapid dynamical transitions between well-defined states, in agreement with the predictions of our model.

  8. Freezing point depression in model Lennard-Jones solutions

    Science.gov (United States)

    Koschke, Konstantin; Jörg Limbach, Hans; Kremer, Kurt; Donadio, Davide

    2015-09-01

    Crystallisation of liquid solutions is of uttermost importance in a wide variety of processes in materials, atmospheric and food science. Depending on the type and concentration of solutes the freezing point shifts, thus allowing control on the thermodynamics of complex fluids. Here we investigate the basic principles of solute-induced freezing point depression by computing the melting temperature of a Lennard-Jones fluid with low concentrations of solutes, by means of equilibrium molecular dynamics simulations. The effect of solvophilic and weakly solvophobic solutes at low concentrations is analysed, scanning systematically the size and the concentration. We identify the range of parameters that produce deviations from the linear dependence of the freezing point on the molal concentration of solutes, expected for ideal solutions. Our simulations allow us also to link the shifts in coexistence temperature to the microscopic structure of the solutions.

  9. Isolation and Characterization of a C-repeat Binding Transcription Factor from Maize

    Institute of Scientific and Technical Information of China (English)

    Lei Wang; Yanzhong Luo; Lan Zhang; Jun Zhao; Zhiqiu Hu; Yunliu Fan; Chunyi Zhang

    2008-01-01

    C-repeat binding proteins (CBFs) are a group of transcription factors that have been proven to be important for stress tolerance in plants.Many of these transcription factors transactivate the promoters of cold-regulated genes via binding to low temperature- or dehydration-responsive cis-elements,thus conferring plants cold acclimation.In the present study,we Isolated a C-repeat binding transcription factor from maize using the yeast one-hybrid system with the C-repeat motif from the promoter of the Arabidopsis COR15a gene as bait.The isolated transcription factor is highly similar to the Arabidopsis CBF3 in their predicted amino acid sequences,and is therefore designated ZmCBF3.Point mutation analyses of the ZmCBF3-binding cis-element revealed (A/G)(C/T)CGAC as the core binding sequence.Expression analyses showed that ZmCBF3 was upregulated by both abscisic acid and low temperature,and was actively expressed during embryogenesis,suggesting that ZmCBF3 plays a role in stress response in maize.

  10. Extracting Feature Curves on Point Sets

    Directory of Open Access Journals (Sweden)

    X. F. Pang

    2011-06-01

    Full Text Available We present an effective algorithm for detecting feature curves on point sets. Based on the local surface fitting method, our algorithm first compute the curvatures and principal directions of each point of point sets. The algorithm then extracts potential feature points according to the biggist principal curvature of the point, and evaluates the principal directions of the detected points. By projecting the points onto the principal axes of their neighborhoods, the potential feature points are smoothed. Using the principal directions with each optimized point, feature curves are generated by polyline growing along the principal directions of feature points. The results indicate that our algorithm is sensitive to both sharp and smooth feature curves of point set, and it supports multi-resolution extraction of features.

  11. ULS LiDAR SUPPORTED ANALYSES OF LASER BEAM PENETRATION FROM DIFFERENT ALS SYSTEMS INTO VEGETATION

    OpenAIRE

    Wieser, M.; Hollaus, M.; G. Mandlburger; Glira, P.; Pfeifer, N

    2016-01-01

    This study analyses the underestimation of tree and shrub heights for different airborne laser scanner systems and point cloud distribution within the vegetation column. Reference data was produced by a novel UAV-borne laser scanning (ULS) with a high point density in the complete vegetation column. With its physical parameters (e.g. footprint) and its relative accuracy within the block as stated in Section 2.2 the reference data is supposed to be highly suitable to detect the highes...

  12. Magnetic flux supplement to coronal bright points

    CERN Document Server

    Mou, Chaozhou; Xia, Lidong; Madjarska, Maria S; Li, Bo; Fu, Hui; Jiao, Fangran; Hou, Zhenyong

    2015-01-01

    Coronal bright points (BPs) are associated with magnetic bipolar features (MBFs) and magnetic cancellation. Here, we investigate how BP-associated MBFs form and how the consequent magnetic cancellation occurs. We analyse longitudinal magnetograms from the Helioseismic and Magnetic Imager to investigate the photospheric magnetic flux evolution of 70 BPs. From images taken in the 193 A passband of the Atmospheric Imaging Assembly (AIA) we dermine that the BPs' lifetimes vary from 2.7 to 58.8 hours. The formation of the BP MBFs is found to involve three processes, namely emergence, convergence and local coalescence of the magnetic fluxes. The formation of a MBF can involve more than one of these processes. Out of the 70 cases, flux emergence is the main process of a MBF buildup of 52 BPs, mainly convergence is seen in 28, and 14 cases are associated with local coalescence. For MBFs formed by bipolar emergence, the time difference between the flux emergence and the BP appearance in the AIA 193 \\AA\\ passband varie...

  13. Possible refurbishment of Point Lepreau

    International Nuclear Information System (INIS)

    In February 2000, the NB Power Board of Directors approved Phase one of a project to produce a business case including a detailed scope and estimate associated with the possible refurbishment of the Point Lepreau Generating Station (PLGS). The Preliminary plan for refurbishment projects an 18-month outage starting as early as the spring of 2006. If the station were to be refurbished, then it would be run for another 25 to 30 years. The decision on whether or not to refurbish PLGS has not been made and is not expected until the summer of 2002. The results of the first phase of the project will be used to prepare a detailed business case that will be presented to the NB Power board of directors in January of 2002. At that time a decision will be made as to whether to refurbish the unit, or obtain other means of replacing the energy produced by PLGS. The station currently produces about a third of the power generated within the province. If the business case is approved, all-380 Pressure Tubes and Calandria Tubes, along with their related End Fittings and Feeders would be replaced. This material would be stored in new storage vaults to be constructed at the existing on-site Waste Management Facility. Replacement of other station components will be performed as required, as determined from the results of a comprehensive Plant Condition Assessment. The condition assessments build on work done under the Plant Life Management Program. Point Lepreau Generating Station has operated well since start of commercial operation in early 1983. With a lifetime capacity factor of about 84% (up to the end of 2000), it has proven to be an economic and environmentally sound electricity provider. The station has also had a significant positive economic impact in Southern New Brunswick, employing over 600 people. However the Pressure Tubes and Feeders are nearing the point in time in which they will exceed their fitness for service criteria. Although tubes can be replaced on an

  14. Iterative approximation of fixed points

    CERN Document Server

    Berinde, Vasile

    2007-01-01

    The aim of this monograph is to give a unified introductory treatment of the most important iterative methods for constructing fixed points of nonlinear contractive type mappings. It summarizes the most significant contributions in the area by presenting, for each iterative method considered (Picard iteration, Krasnoselskij iteration, Mann iteration, Ishikawa iteration etc.), some of the most relevant, interesting, representative and actual convergence theorems. Applications to the solution of nonlinear operator equations as well as the appropriate error analysis of the main iterative methods, are also presented. Due to the explosive number of research papers on the topic (in the last 15 years only, more than one thousand articles related to the subject were published), it was felt that such a monograph was imperatively necessary. The volume is useful for authors, editors, and reviewers. It introduces concrete criteria for evaluating and judging the plethora of published papers.

  15. Vortex Laser at Exceptional Point

    CERN Document Server

    Wang, Xing-Yuan; Li, Ying; Li, Bo; Ma, Ren-Min

    2016-01-01

    The optical vortices carrying orbital angular momentum (OAM) are commonly generated by modulating the available conventional light beam. This article shows that a micro-laser operates at the exceptional point (EP) of the non-Hermitian quantum system can directly emit vortex laser with well-defined OAM at will. Two gratings (the refractive index modulation and along azimuthal direction and the grating protruding from the micro-ring cavity) modulate the eigenmode of a micro-ring cavity to be a vortex laser mode. The phase-matching condition ensures that we can tune the OAM of the vortex beam to be arbitrary orders by changing the grating protruding from the micro-ring cavity while the system is kept at EP. The results are obtained by analytical analysis and confirmed by 3D full wave simulations.

  16. Interpolating point spread function anisotropy

    CERN Document Server

    Gentile, M; Meylan, G

    2012-01-01

    Planned wide-field weak lensing surveys are expected to reduce the statistical errors on the shear field to unprecedented levels. In contrast, systematic errors like those induced by the convolution with the point spread function (PSF) will not benefit from that scaling effect and will require very accurate modeling and correction. While numerous methods have been devised to carry out the PSF correction itself, modeling of the PSF shape and its spatial variations across the instrument field of view has, so far, attracted much less attention. This step is nevertheless crucial because the PSF is only known at star positions while the correction has to be performed at any position on the sky. A reliable interpolation scheme is therefore mandatory and a popular approach has been to use low-order bivariate polynomials. In the present paper, we evaluate four other classical spatial interpolation methods based on splines (B-splines), inverse distance weighting (IDW), radial basis functions (RBF) and ordinary Kriging...

  17. The Herschel Point Source Catalogue

    CERN Document Server

    Marton, Gábor; Altieri, Bruno; Calzoletti, Luca; Kiss, Csaba; Lim, Tanya; Lu, Nanyao; Paladini, Roberta; Papageorgiou, Andreas; Pearson, Chris; Rector, John; Shupe, David; Valtchanov, Ivan; Varga-Verebélyi, Erika; Xu, Kevin

    2015-01-01

    The Herschel Space Observatory was the fourth cornerstone mission in the European Space Agency (ESA) science programme with excellent broad band imaging capabilities in the sub-mm and far-infrared part of the spectrum. Although the spacecraft finished its observations in 2013, it left a large legacy dataset that is far from having been fully scrutinised and still has a large potential for new scientific discoveries. This is specifically true for the photometric observations of the PACS and SPIRE instruments. Some source catalogues have already been produced by individual observing programs, but there are many observations that risk to remain unexplored. To maximise the science return of the SPIRE and PACS data sets, we are in the process of building the Herschel Point Source Catalogue (HPSC) from all primary and parallel mode observations. Our homogeneous source extraction enables a systematic and unbiased comparison of sensitivity across the different Herschel fields that single programs will generally not b...

  18. Rational points on elliptic curves

    CERN Document Server

    Silverman, Joseph H

    2015-01-01

    The theory of elliptic curves involves a pleasing blend of algebra, geometry, analysis, and number theory. This book stresses this interplay as it develops the basic theory, thereby providing an opportunity for advanced undergraduates to appreciate the unity of modern mathematics. At the same time, every effort has been made to use only methods and results commonly included in the undergraduate curriculum. This accessibility, the informal writing style, and a wealth of exercises make Rational Points on Elliptic Curves an ideal introduction for students at all levels who are interested in learning about Diophantine equations and arithmetic geometry. Most concretely, an elliptic curve is the set of zeroes of a cubic polynomial in two variables. If the polynomial has rational coefficients, then one can ask for a description of those zeroes whose coordinates are either integers or rational numbers. It is this number theoretic question that is the main subject of this book. Topics covered include the geometry and ...

  19. Understanding of myofascial trigger points

    Institute of Scientific and Technical Information of China (English)

    Zhuang Xiaoqiang; Tan Shusheng; Huang Qiangmin

    2014-01-01

    Objective To investigate the current practice of myofascial pain syndrome (MPS) including current epidemiology,pathology,diagnosis and treatment.Data sources The data analyzed in this review were mainly from relevant articles without restriction on the publication date reported in PubMed,MedSci,Google scholar.The terms "myofasial trigger points" and "myofacial pain syndrome" were used for the literature search.Study selection Original articles with no limitation of research design and critical reviews containing data relevant to myofascial trigger points (MTrPs) and MPS were retrieved,reviewed,analyzed and summarized.Results Myofascial pain syndrome (MPS) is characterized by painful taut band,referred pain,and local response twitch with a prevalence of 85% to 95% of incidence.Several factors link to the etiology of MTrPs,such as the chronic injury and overload of muscles.Other factors,such as certain nutrient and hormone insufficiency,comorbidities,and muscle imbalance may also maintain the MTrP in an active status and induce recurrent pain.The current pathology is that an extra leakage acetylcholine at the neuromuscular junction induces persistent contracture knots,relative to some hypotheses of integration,muscle spindle discharges,spinal segment sensitization,ect.MTrPs can be diagnosed and localized based on a few subjective criteria.Several approaches,including both direct and supplementary treatments,can inactivate MTrPs.Direct treatments are categorized into invasive and conservative.Conclusion This review provides a clear understanding of MTrP pain and introduces the most useful treatment approaches in China.

  20. Discovering new points of differentiation.

    Science.gov (United States)

    MacMillan, I C; McGrath, R G

    1997-01-01

    Most profitable strategies are built on differentiation: offering customers something they value that competitors don't have. But most companies concentrate only on their products or services. In fact, a company can differentiate itself every point where it comes in contact with its customers--from the moment customers realize they need a product or service to the time when they dispose of it. The authors believe that if companies open up their thinking to their customer's entire experience with a product or service--the consumption chain--they can uncover opportunities to position their offerings in ways that neither they nor their competitors though possible. The authors show how even a mundane product such as candles can be successfully differentiated. By analyzing its customers' experiences and exploring various options, Blyth Industries, for example, has grown from a $2 million U.S. candle manufacturer into a global candle and accessory business with nearly $500 million in sales and a market value of $1.2 billion. Finding ways to differentiate one's company is a skill that can be nurtured, the authors contend. In this Manager's Tool Kit, they have designed a two-part approach that can help companies continually identify new points of differentiation and develop the ability to generate successful differentiation strategies. "Mapping the Consumption Chain" captures the customer's total experience with a product or service. "Analyzing Your Customer's Experience" shows managers how directed brainstorming about each step in the consumption chain can elicit numerous ways to differentiate any offering. PMID:10168333

  1. The Herschel Point Source Catalogue

    Science.gov (United States)

    Marton, Gabor; Schulz, Bernhard; Altieri, Bruno; Calzoletti, Luca; Kiss, Csaba; Lim, Tanya; Lu, Nanyao; Paladini, Roberta; Papageorgiou, Andreas; Pearson, Chris; Rector, John; Shupe, David; Valtchanov, Ivan; Verebélyi, Erika; Xu, Kevin

    2015-08-01

    The Herschel Space Observatory was the fourth cornerstone mission in the European Space Agency (ESA) science programme with excellent broad band imaging capabilities in the submillimetre and far-infrared part of the spectrum. Although the spacecraft finished its observations in 2013, it left a large legacy dataset that is far from having been fully scrutinized and still has potential for new scientific discoveries. This is specifically true for the photometric observations of the PACS and SPIRE instruments that scanned >10% of the sky at 70, 100, 160, 250, 350 and 500 microns. Some source catalogs have already been produced by individual observing programs, but there are many observations that would never be analyzed for their full source content. To maximize the science return of the SPIRE and PACS data sets, our international team of instrument experts is in the process of building the Herschel Point Source Catalog (HPSC) from all scan map observations. Our homogeneous source extraction enables a systematic and unbiased comparison of sensitivity across the different Herschel fields that single programs will generally not be able to provide. The extracted point sources will contain individual YSOs of our Galaxy, unresolved YSO clusters in resolved nearby galaxies and unresolved galaxies of the local and distant Universe that are related to star formation. Such a huge dataset will help scientists better understand the evolution from interstellar clouds to individual stars. Furthermore the analysis of stellar clusters and the star formation on galactic scales will add more details to the understanding of star formation laws through time.We present our findings on comparison of different source detection and photometric tools. First results of the extractions are shown along with the description of our pipelines and catalogue entries. We also provide an additional science product, the structure noise map, that is used for the quality assessment of the catalogue in

  2. Professional SharePoint 2010 Development

    CERN Document Server

    Rizzo, Tom; Fried, Jeff

    2010-01-01

    Learn to leverage the features of the newest version of SharePoint, in this update to the bestseller. More than simply a portal, SharePoint is Microsoft's popular content management solution for building intranets and Web sites or hosting wikis and blogs. Offering broad coverage on all aspects of development for the SharePoint platform, this comprehensive book shows you exactly what SharePoint does, how to build solutions, and what features are accessible within SharePoint. Written by one of the most recognized names in SharePoint development, Professional SharePoint 2010 Development offers an

  3. Key Point Based Data Analysis Technique

    Science.gov (United States)

    Yang, Su; Zhang, Yong

    In this paper, a new framework for data analysis based on the "key points" in data distribution is proposed. Here, the key points contain three types of data points: bridge points, border points, and skeleton points, where our main contribution is the bridge points. For each type of key points, we have developed the corresponding detection algorithm and tested its effectiveness with several synthetic data sets. Meanwhile, we further developed a new hierarchical clustering algorithm SPHC (Skeleton Point based Hierarchical Clustering) to demonstrate the possible applications of the key points acquired. Based on some real-world data sets, we experimentally show that SPHC performs better compared with several classical clustering algorithms including Complete-Link Hierarchical Clustering, Single-Link Hierarchical Clustering, KMeans, Ncut, and DBSCAN.

  4. 49 CFR 236.327 - Switch, movable-point frog or split-point derail.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Switch, movable-point frog or split-point derail..., AND APPLIANCES Interlocking Rules and Instructions § 236.327 Switch, movable-point frog or split-point derail. Switch, movable-point frog, or split-point derail equipped with lock rod shall be maintained...

  5. Prismatic analyser concept for neutron spectrometers

    Energy Technology Data Exchange (ETDEWEB)

    Birk, Jonas O.; Jacobsen, Johan; Hansen, Rasmus L.; Lefmann, Kim [Nano Science Center, Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen Ø (Denmark); Markó, Márton; Niedermayer, Christof [Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen PSI (Switzerland); Freeman, Paul G. [Laboratory for Quantum Magnetism, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland); Christensen, Niels B. [Institute of Physics, Technical University of Denmark, DK-2800-Kgs. Lyngby (Denmark); Månsson, Martin [Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen PSI (Switzerland); Laboratory for Quantum Magnetism, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland); Rønnow, Henrik M. [Nano Science Center, Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen Ø (Denmark); Laboratory for Quantum Magnetism, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)

    2014-11-15

    Developments in modern neutron spectroscopy have led to typical sample sizes decreasing from few cm to several mm in diameter samples. We demonstrate how small samples together with the right choice of analyser and detector components makes distance collimation an important concept in crystal analyser spectrometers. We further show that this opens new possibilities where neutrons with different energies are reflected by the same analyser but counted in different detectors, thus improving both energy resolution and total count rate compared to conventional spectrometers. The technique can readily be combined with advanced focussing geometries and with multiplexing instrument designs. We present a combination of simulations and data showing three different energies simultaneously reflected from one analyser. Experiments were performed on a cold triple axis instrument and on a prototype inverse geometry Time-of-flight spectrometer installed at PSI, Switzerland, and shows excellent agreement with the predictions. Typical improvements will be 2.0 times finer resolution and a factor of 1.9 in flux gain compared to a focussing Rowland geometry, or of 3.3 times finer resolution and a factor of 2.4 in flux gain compared to a single flat analyser slab.

  6. Fixed Point Actions for Lattice Fermions

    OpenAIRE

    Bietenholz, W.; Wiese, U. -J.

    1993-01-01

    The fixed point actions for Wilson and staggered lattice fermions are determined by iterating renormalization group transformations. In both cases a line of fixed points is found. Some points have very local fixed point actions. They can be used to construct perfect lattice actions for asymptotically free fermionic theories like QCD or the Gross-Neveu model. The local fixed point actions for Wilson fermions break chiral symmetry, while in the staggered case the remnant $U(1)_e \\otimes U(1)_o$...

  7. Sampling bird communities in bottomland hardwood forests of the Mississippi Alluvial Valley: Number of points visited versus number of visits to a point

    Science.gov (United States)

    Twedt, D.J.; Smith, W.P.; Cooper, R.J.; Ford, R.P.; Hamel, P.B.; Wiedenfeld, D.A.

    1993-01-01

    Within each of 4 forest stands on Delta Experimental Forest (DEF), 25 points were visited 5 to 7 times from 8 May to 21 May 1991, and 6 times from 30 May to 12 June 1992. During each visit to a point, all birds detected, visuallyor aurally, at any distance were recorded during a 4-minute interval. Using these data, our objectives were to recommend the number of point counts and the number of visits to a point which provide the greatest efficiency for estimating the cumulative number of species in bottomland hardwood forest stands within the Mississippi Alluvial Valley, and to ascertain if increasing the number of visits to points is equivalent to adding more points. Because the total number of species detected in DEF were different between years, 39 species in 1991 and 55 species in 1992, we considered each year independently. Within each stand, we obtained bootstrap estimates of the mean cumulative number of species obtained from all possible combinations of six points and six visits (i.e., 36 means/stand). These bootstrap estimates were subjected to ANOVA; we modelled cumulative number of species as a function of the number of points visited, the number of visits to each point, and their interaction. As part of the same ANOVA we made an a priori, simultaneous comparison of the 15 possible reciprocal treatments (i.e., 1 point-2 visits vs. 2 points-1 visit, etc.). Results of analyses for each year were similar. Although no interaction was detected between the number of points and the number of visits, when reciprocals were compared, more points visited yielded significantly greater cumulative number of species than more visits to each point. Significant differences were detected among both the number of points visited and among the number of visits to a point. Scheffe's test of differences among means indicated that the cumulative number of species increased significantly with each added point, through five points, but six points did not differ from five points in

  8. A theoretical framework for analysing preschool teaching

    DEFF Research Database (Denmark)

    Chaiklin, Seth

    2014-01-01

    through the analysis of one of the earliest recorded examples of preschool education (initiated by J. F. Oberlin in northeastern France in 1767). The general idea of societal need is elaborated as a way of analysing practices, and a general analytic schema is presented for characterising preschool......This article introduces a theoretical framework for analysing preschool teaching as a historically-grounded societal practice. The aim is to present a unified framework that can be used to analyse and compare both historical and contemporary examples of preschool teaching practice within and across...... national traditions. The framework has two main components, an analysis of preschool teaching as a practice, formed in relation to societal needs, and an analysis of the categorical relations which necessarily must be addressed in preschool teaching activity. The framework is introduced and illustrated...

  9. Advanced toroidal facility vaccuum vessel stress analyses

    International Nuclear Information System (INIS)

    The complex geometry of the Advance Toroidal Facility (ATF) vacuum vessel required special analysis techniques in investigating the structural behavior of the design. The response of a large-scale finite element model was found for transportation and operational loading. Several computer codes and systems, including the National Magnetic Fusion Energy Computer Center Cray machines, were implemented in accomplishing these analyses. The work combined complex methods that taxed the limits of both the codes and the computer systems involved. Using MSC/NASTRAN cyclic-symmetry solutions permitted using only 1/12 of the vessel geometry to mathematically analyze the entire vessel. This allowed the greater detail and accuracy demanded by the complex geometry of the vessel. Critical buckling-pressure analyses were performed with the same model. The development, results, and problems encountered in performing these analyses are described. 5 refs., 3 figs

  10. Beginning SharePoint 2010 Administration Windows SharePoint Foundation 2010 and Microsoft SharePoint Server 2010

    CERN Document Server

    Husman, Göran

    2010-01-01

    Complete coverage on the latest advances in SharePoint 2010 administration. SharePoint 2010 comprises an abundance of new features, and this book shows you how to take advantage of all SharePoint 2010's many improvements. Written by a four-time SharePoint MVP, Beginning SharePoint 2010 Administration begins with a comparison of SharePoint 2010 compared to the previous version and then examines the differences between WSS 4.0 and MSS 2010. Packed with step-by-step instructions, tips and tricks, and real-world examples, this book dives into the basics of how to install, manage, and administrate

  11. The Software Point of View

    CERN Multimedia

    Bentvelsen, Stan

    Physics was meant to be the topic of the LUND workshop, but it was software that dominated throughout the week. ATLAS' new software proves a tough nut to crack. Many presented physics analyses were repetitions of the Physics TDR, using (or trying to use) the new software. The main purpose was to demonstrate that results were invariant with new software. Hard to prove since the 'new software' is not yet completed. Nevertheless the so far existing sofware is massively experimented with throughout the entire ATLAS community. So what does this "new software" really mean? The answer depends strongly on the person who deals with this question. The scope varies between "migrating from Fortran77 to C++" and "learn Object Oriented approach" to "implementing services and algorithms in Athena" or "feeding detector description in FADS". Clearly the new software primarily involves migrating from the old Fortran code to C++ with its object oriententation paradigm. Occasionaly there was a hint that this migration is not c...

  12. The application analyses for primary spectrum pyrometer

    Institute of Scientific and Technical Information of China (English)

    FU; TaiRan

    2007-01-01

    In the applications of primary spectrum pyrometry, based on the dynamic range and the minimum sensibility of the sensor, the application issues, such as the measurement range and the measurement partition, were investigated through theoretical analyses. For a developed primary spectrum pyrometer, the theoretical predictions of measurement range and the distributions of measurement partition were presented through numerical simulations. And the measurement experiments of high-temperature blackbody and standard temperature lamp were processed to further verify the above theoretical analyses and numerical results. Therefore the research in the paper provides the helpful supports for the applications of primary spectrum pyrometer and other radiation pyrometers.……

  13. TOGGLE : toolbox for generic NGS analyses

    OpenAIRE

    Monat, Cécile; Tranchant-Dubreuil, Christine; Kougbeadjo, Ayité; Farcy, Cédric; Ortega-Abboud, Enrique; Amanzougarene, Souhila; Ravel, Sébastien; Agbessi, Mawussé; Orjuela-Bouniol, Julie; Summo, Maryline; Sabot, François

    2015-01-01

    Background The explosion of NGS (Next Generation Sequencing) sequence data requires a huge effort in Bioinformatics methods and analyses. The creation of dedicated, robust and reliable pipelines able to handle dozens of samples from raw FASTQ data to relevant biological data is a time-consuming task in all projects relying on NGS. To address this, we created a generic and modular toolbox for developing such pipelines. Results TOGGLE (TOolbox for Generic nGs anaLysEs) is a suite of tools able ...

  14. TOGGLE: toolbox for generic NGS analyses

    OpenAIRE

    Monat, Cécile; Tranchant-Dubreuil, Christine; Kougbeadjo, Ayité; Farcy , Cédric; Ortega-Abboud, Enrique; Amanzougarene, Souhila; Ravel, Sébastien; Agbessi, Mawusse; Orjuela-Bouniol, Julie; Summo, Marilyne; Sabot, François

    2015-01-01

    Background: The explosion of NGS (Next Generation Sequencing) sequence data requires a huge effort in Bioinformatics methods and analyses. The creation of dedicated, robust and reliable pipelines able to handle dozens of samples from raw FASTQ data to relevant biological data is a time-consuming task in all projects relying on NGS. To address this, we created a generic and modular toolbox for developing such pipelines. Results: TOGGLE (TOolbox for Generic nGs anaLysEs) is a suite of tools abl...

  15. TOGGLE: toolbox for generic NGS analyses

    OpenAIRE

    Monat, Cécile; Tranchant-Dubreuil, Christine; Kougbeadjo, Ayité; Farcy, Cédric; Ortega-Abboud, Enrique; Amanzougarene, Souhila; Ravel, Sébastien; Agbessi, Mawusse; Orjuela-Bouniol , Julie; Summo, Marilyne; Sabot, François

    2015-01-01

    Background The explosion of NGS (Next Generation Sequencing) sequence data requires a huge effort in Bioinformatics methods and analyses. The creation of dedicated, robust and reliable pipelines able to handle dozens of samples from raw FASTQ data to relevant biological data is a time-consuming task in all projects relying on NGS. To address this, we created a generic and modular toolbox for developing such pipelines. Results TOGGLE (TOolbox for Generic nGs anaLysEs) is a suite of tools able ...

  16. Analyse de discours et demande sociale

    OpenAIRE

    Cislaru, Georgeta; Garnier, Sylvie; Matras, Marie-Thérèse; Pugnière-Saavedra, Frédéric; Rousseau, Patrick; Sitri, Frédérique; Veniard, Marie

    2010-01-01

    Que peut nous révéler l’analyse de discours des pratiques sociétales et des pratiques discursives qui les sous-tendent ? En questionnant le discours,l'analyse de discours questionne aussi ses instances productrices : instances politiques, médiatiques, institutionnelles. Elle a ainsi engagé, depuis une quarantaine d’années, un dialogue interdisciplinaire fructueux. Avec cinq contributions d’analystes de discours et deux de professionnels de la protection de l’enfance, ce numéro des Carnets du ...

  17. Interferences in reactor neutron activation analyses

    International Nuclear Information System (INIS)

    It has been shown that interfering reactions may occur in neutron activation analyses of aluminum and zinc matrixes, commonly used in nuclear areas. The interferences analysed were: Al2713 (n, α) Na2411 and Zn6430 (n, p) Cu6429. The method used was the non-destructive neutron activation analysis and the spectra were obtained in a 1024 multichannel system coupled with a Ge(Li) detector. Sodium was detected in aluminum samples from the reactor tank and pneumatic transfer system. The independence of the sodium concentration in samples in the range of 0 - 100 ppm is shown by the attenuation obtained with the samples encapsulated in cadmium. (Author)

  18. Prosjektering og analyse av en spennarmert betongbru

    OpenAIRE

    Strand, Elin Holsten; Kaldbekkdalen, Ann-Kristin

    2014-01-01

    Hensikten med rapporten er å gjennomføre analyse og dimensjonering av en etteroppspent betongbru. Modellering og analyse er gjennomført i NovaFrame 5. En del av oppgaven var å bestemme spennsystem og tverrsnittshøyden i brua. Det ble antatt seks spennkabler i felt, og tolv over støtte. Videre ble tverrsnittshøyden satt lik 1,3 meter. Dimensjoneringen ble gjennomført i henhold til gjeldende Eurokoder, aktuelle dokumenter og Håndbok 185, som er utarb...

  19. Inflection point inflation within supersymmetry

    Energy Technology Data Exchange (ETDEWEB)

    Enqvist, Kari [Physics Department and Helsinki Institute of Physics, FI-00014 University of Helsinki (Finland); Mazumdar, Anupam; Stephens, Philip, E-mail: kari.enqvist@helsinki.fi, E-mail: a.mazumdar@lancaster.ac.uk, E-mail: p.stephens@lancaster.ac.uk [Physics Department, Lancaster University, Lancaster, LA1 4YB (United Kingdom)

    2010-06-01

    We propose to address the fine tuning problem of inflection point inflation by the addition of extra vacuum energy that is present during inflation but disappears afterwards. We show that in such a case, the required amount of fine tuning is greatly reduced. We suggest that the extra vacuum energy can be associated with an earlier phase transition and provide a simple model, based on extending the SM gauge group to SU(3){sub C} × SU(2){sub L} × U(1){sub Y} × U(1){sub B−L}, where the Higgs field of U(1){sub B−L} is in a false vacuum during inflation. In this case, there is virtually no fine tuning of the soft SUSY breaking parameters of the flat direction which serves as the inflaton. However, the absence of radiative corrections which would spoil the flatness of the inflaton potential requires that the U(1){sub B−L} gauge coupling should be small with g{sub B−L} ≤ 10{sup −4}.

  20. Decision Point 1 Topical Report

    Energy Technology Data Exchange (ETDEWEB)

    Yablonsky, Al; Barsoumian, Shant; Legere, David

    2013-05-01

    This Topical Report addresses accomplishments achieved during Phase 2a of the SkyMine® Carbon Mineralization Pilot Project. The primary objectives of this project are to design, construct, and operate a system to capture CO2 from a slipstream of flue gas from a commercial coal-fired cement kiln, convert that CO2 to products having commercial value (i.e., beneficial use), show the economic viability of the CO2 capture and conversion process, and thereby advance the technology to the point of readiness for commercial scale demonstration and proliferation. The overall process is carbon negative, resulting in mineralization of CO2 that would otherwise be released into the atmosphere. The project will also substantiate market opportunities for the technology by sales of chemicals into existing markets, and identify opportunities to improve technology performance and reduce costs at the commercial scale. The project is being conducted in two phases. The primary objectives of Phase 1 were to elaborate proven SkyMine® process chemistry to commercial pilot-scale operation and complete the preliminary design for the pilot plant to be built and operated in Phase 2, complete a NEPA evaluation, and develop a comprehensive carbon life cycle analysis. The objective of the current Phase (2a) is to complete the detailed design of the pilot plant to be built in Phase 2b.

  1. Cartographic analyses of geographic information available on Google Earth Images

    Science.gov (United States)

    Oliveira, J. C.; Ramos, J. R.; Epiphanio, J. C.

    2011-12-01

    The propose was to evaluate planimetric accuracy of satellite images available on database of Google Earth. These images are referents to the vicinities of the Federal Univertisity of Viçosa, Minas Gerais - Brazil. The methodology developed evaluated the geographical information of three groups of images which were in accordance to the level of detail presented in the screen images (zoom). These groups of images were labeled to Zoom 1000 (a single image for the entire study area), Zoom 100 (formed by a mosaic of 73 images) and Zoom 100 with geometric correction (this mosaic is like before, however, it was applied a geometric correction through control points). In each group of image was measured the Cartographic Accuracy based on statistical analyses and brazilian's law parameters about planimetric mapping. For this evaluation were identified 22 points in each group of image, where the coordinates of each point were compared to the coordinates of the field obtained by GPS (Global Positioning System). The Table 1 show results related to accuracy (based on a threshold equal to 0.5 mm * mapping scale) and tendency (abscissa and ordinate) between the coordinates of the image and the coordinates of field. Table 1 The geometric correction applied to the Group Zoom 100 reduced the trends identified earlier, and the statistical tests pointed a usefulness of the data for a mapping at a scale of 1/5000 with error minor than 0.5 mm * scale. The analyses proved the quality of cartographic data provided by Google, as well as the possibility of reduce the divergences of positioning present on the data. It can be concluded that it is possible to obtain geographic information database available on Google Earth, however, the level of detail (zoom) used at the time of viewing and capturing information on the screen influences the quality cartographic of the mapping. Although cartographic and thematic potential present in the database, it is important to note that both the software

  2. Comparison of Dose When Prescribed to Point A and Point H for Brachytherapy in Cervical Cancer

    Energy Technology Data Exchange (ETDEWEB)

    Gang, Ji Hyeong; Gim, Il Hwan; Hwang, Seon Boong; Kim, Woong; Im, Hyeong Seo; Gang, Jin Mook; Gim, Gi Hwan; Lee, Ah Ram [Dept. of Radiation Oncology, Korea Institute of Radiological and Medical Sciences, Seou (Korea, Republic of)

    2012-09-15

    The purpose of this study is to compare plans prescribed to point A with these prescribed to point H recommended by ABS (American Brachytherapy Society) in high dose rate intracavitary brachytherapy for cervical carcinoma. This study selected 103 patients who received HDR (High Dose Rate) brachytherapy using tandem and ovoids from March 2010 to January 2012. Point A, bladder point, and rectal point conform with Manchester System. Point H conforms with ABS recommendation. Also Sigmoid colon point, and vagina point were established arbitrarily. We examined distance between point A and point H. The percent dose at point A was calculated when 100% dose was prescribed to point H. Additionally, the percent dose at each reference points when dose is prescribed to point H and point A were calculated. The relative dose at point A was lower when point H was located inferior to point A. The relative doses at bladder, rectal, sigmoid colon, and vagina points were higher when point H was located superior to point A, and lower when point H was located inferior to point A. This study found out that as point H got located much superior to point A, the absorbed dose of surrounding normal organs became higher, and as point H got located much inferior to point A, the absorbed dose of surrounding normal organs became lower. This differences dose not seem to affect the treatment. However, we suggest this new point is worth being considered for the treatment of HDR if dose distribution and absorbed dose at normal organs have large differences between prescribed to point A and H.

  3. Quantifying climate risk - the starting point

    International Nuclear Information System (INIS)

    Full text: All natural systems have evolved to their current state as a result inter alia of the climate in which they developed. Similarly, man-made systems (such as agricultural production) have developed to suit the climate experienced over the last 100 or so years. The capacity of different systems to adapt to changes in climate that are outside those that have been experienced previously is largely unknown. This results in considerable uncertainty when predicting climate change impacts. However, it is possible to quantify the relative probabilities of a range of potential impacts of climate change. Quantifying current climate risks is an effective starting point for analysing the probable impacts of future climate change and guiding the selection of appropriate adaptation strategies. For a farming system to be viable within the current climate, its profitability must be sustained and, therefore, possible adaptation strategies need to be tested for continued viability in a changed climate. The methodology outlined in this paper examines historical patterns of key climate variables (rainfall and temperature) across the season and their influence on the productivity of wheat growing in NSW. This analysis is used to identify the time of year that the system is most vulnerable to climate variation, within the constraints of the current climate. Wheat yield is used as a measure of productivity, which is also assumed to be a surrogate for profitability. A time series of wheat yields is sorted into ascending order and categorised into five percentile groupings (i.e. 20th, 40th, 60th and 80th percentiles) for each shire across NSW (-100 years). Five time series of climate data (which are aggregated daily data from the years in each percentile) are analysed to determine the period that provides the greatest climate risk to the production system. Once this period has been determined, this risk is quantified in terms of the degree of separation of the time series

  4. Analysing Theoretical Frameworks of Moral Education through Lakatos's Philosophy of Science

    Science.gov (United States)

    Han, Hyemin

    2014-01-01

    The structure of studies of moral education is basically interdisciplinary; it includes moral philosophy, psychology, and educational research. This article systematically analyses the structure of studies of moral educational from the vantage points of philosophy of science. Among the various theoretical frameworks in the field of philosophy of…

  5. Mise au point de pains composites à base de melanges de farines de sorgho-ble et analyse texturale

    Directory of Open Access Journals (Sweden)

    Blecker C.

    1999-01-01

    Full Text Available Composite breads based on sorghum-wheat flour blends and textural analysis. Breadmaking properties of flour blends containing various levels of sorghum flour with wheat flour were investigated. Good quality bread (loaf volume, crumb structure, external appearance comparable to bread entirely made from wheat flour could be produced with a level of incorporation of sorghum flour up to 30/. Beyond this level, the loaf volume decreases and the internal characteristics of crumb are deteriorated. The staling of bread made with composite flour is also influenced by the level of substitution of sorghum flour: the more important this level, the higher the rate of crumb firming. Addition of 0.5/ emulsiflers, DATEM and SSL, to the sorghum flour blends improves the crumb characteristics and consequently delays the bread firmness.

  6. ANALYSE D'ENVIRONNEMENTS DE GEOMETRIE DYNAMIQUE COLLABORATIVE DU POINT DE VUE DE L’ORCHESTRATION INSTRUMENTAL

    Directory of Open Access Journals (Sweden)

    Franck Bellemain

    2014-11-01

    Full Text Available Numerous software implements Dynamic Geometry since the 80s. Some of them introduce functionalities of synchronous communication allowing distant exchanges of geometric contents. Even if the availability of such functionalities is very important, it doesn’t guaranty collaboration or learning between the partners of exchanges: the conception and conduct of collaborative learning situations is a key issue. It’s in this sense that we are interested in studying, through the instrumental orchestration, what three of these software (Geogebra, Tabulae and Compass and Ruler are offering for supporting conception and conduct of collaborative learning situations, beyond the functionalities for the synchronous communication of geometric contents.

  7. Point processes statistics of stable isotopes: analysing water uptake patterns in a mixed stand of Aleppo pine and Holm oak

    OpenAIRE

    Carles Comas; Jorge del Castillo; Jordi Voltas; Juan Pedro Ferrio

    2015-01-01

    Aim of study: Understanding inter- and intra-specific competition for water is crucial in drought-prone environments. However, little is known about the spatial interdependencies for water uptake among individuals in mixed stands. The aim of this work was to compare water uptake patterns during a drought episode in two common Mediterranean tree species, Quercus ilex L. and Pinus halepensis Mill., using the isotope composition of xylem water (δ18O, δ2 H) as hydrological marker. ...

  8. Optimal control of decoupling point with deteriorating items

    Directory of Open Access Journals (Sweden)

    Kuan Yang

    2014-10-01

    Full Text Available Purpose: The aim of this paper is to develop a dynamic model to simultaneously determine the optimal position of the decoupling point and the optimal path of the production rate as well as the inventory level in a supply chain. With the objective to minimize the total cost of the deviation from the target setting, the closed forms of the optimal solution are derived over a finite planning horizon with deterioration rate under time-varying demand rate.Design/methodology/approach: The Pontryagin's Maximum Principle is employed to explore the optimal position of decoupling point and the optimal production and inventory rate for the proposed dynamic models. The performances of parameters are illustrated through analytical and numerical approaches.Findings: The results denote that the optimal production rate and inventory level are closely related to the target setting which are highly dependent on production policy; meanwhile the optimal decoupling point is exist and unique with the fluctuating of deteriorating rate and product life cycle. The further analyses through both mathematic and numerical approaches indicate that the shorten of product life cycle shifts the optimal decoupling point forward to the end customer meanwhile a backward shifting appears when the deterioration rate increase.Research limitations/implications: There is no shortage allowed and the replacement policy is not taken into account.Practical implications: Solutions derived from this study of the optimal production-inventory plan and decoupling point are instructive for operation decision making. The obtained knowledge about the performance of different parameters is critical to deteriorating supply chains management.Originality/value: Many previous models of the production-inventory problem are only focused on the cost. The paper introduces the decoupling point control into the production and inventory problem such that a critical element-customer demand, can be taken into

  9. Cost-Benefit Analyses of Transportation Investments

    DEFF Research Database (Denmark)

    Næss, Petter

    2006-01-01

    environment. In addition, main input data are based on transport modelling analyses based on a misleading `local ontology' among the model makers. The ontological misconceptions translate into erroneous epistemological assumptions about the possibility of precise predictions and the validity of willingness...

  10. Comparison of veterinary import risk analyses studies

    NARCIS (Netherlands)

    Vos-de Jong, de C.J.; Conraths, F.J.; Adkin, A.; Jones, E.M.; Hallgren, G.S.; Paisley, L.G.

    2011-01-01

    Twenty-two veterinary import risk analyses (IRAs) were audited: a) for inclusion of the main elements of risk analysis; b) between different types of IRAs; c) between reviewers' scores. No significant differences were detected between different types of IRAs, although quantitative IRAs and IRAs publ

  11. UMTS signal measurements with digital spectrum analysers

    International Nuclear Information System (INIS)

    The launch of the Universal Mobile Telecommunications System (UNITS), the most recent mobile telecommunications standard has imposed the requirement of updating measurement instrumentation and methodologies. In order to define the most reliable measurement procedure, which is aimed at assessing the exposure to electromagnetic fields, modern spectrum analysers' features for correct signal characterisation has been reviewed. (authors)

  12. A gamma model for {DNA} mixture analyses

    OpenAIRE

    Cowell, R. G.; Lauritzen, S L; Mortera, J.

    2007-01-01

    We present a new methodology for analysing forensic identification problems involving DNA mixture traces where several individuals may have contributed to the trace. The model used for identification and separation of DNA mixtures is based on a gamma distribution for peak area values. In this paper we illustrate the gamma model and apply it on several real examples from forensic casework.

  13. En Billig GPS Data Analyse Platform

    DEFF Research Database (Denmark)

    Andersen, Ove; Christiansen, Nick; Larsen, Niels T.; Torp, Kristian

    2011-01-01

    Denne artikel præsenterer en komplet software platform til analyse af GPS data. Platformen er bygget udelukkende vha. open-source komponenter. De enkelte komponenter i platformen beskrives i detaljer. Fordele og ulemper ved at bruge open-source diskuteres herunder hvilke IT politiske tiltage, der...

  14. Comparing functional annotation analyses with Catmap

    Directory of Open Access Journals (Sweden)

    Krogh Morten

    2004-12-01

    Full Text Available Abstract Background Ranked gene lists from microarray experiments are usually analysed by assigning significance to predefined gene categories, e.g., based on functional annotations. Tools performing such analyses are often restricted to a category score based on a cutoff in the ranked list and a significance calculation based on random gene permutations as null hypothesis. Results We analysed three publicly available data sets, in each of which samples were divided in two classes and genes ranked according to their correlation to class labels. We developed a program, Catmap (available for download at http://bioinfo.thep.lu.se/Catmap, to compare different scores and null hypotheses in gene category analysis, using Gene Ontology annotations for category definition. When a cutoff-based score was used, results depended strongly on the choice of cutoff, introducing an arbitrariness in the analysis. Comparing results using random gene permutations and random sample permutations, respectively, we found that the assigned significance of a category depended strongly on the choice of null hypothesis. Compared to sample label permutations, gene permutations gave much smaller p-values for large categories with many coexpressed genes. Conclusions In gene category analyses of ranked gene lists, a cutoff independent score is preferable. The choice of null hypothesis is very important; random gene permutations does not work well as an approximation to sample label permutations.

  15. Analyses of hydraulic performance of velocity caps

    DEFF Research Database (Denmark)

    Christensen, Erik Damgaard; Degn Eskesen, Mark Chr.; Buhrkall, Jeppe;

    2014-01-01

    The hydraulic performance of a velocity cap has been investigated. Velocity caps are often used in connection with offshore intakes. CFD (computational fluid dynamics) examined the flow through the cap openings and further down into the intake pipes. This was combined with dimension analyses...

  16. FAME: Software for analysing rock microstructures

    Science.gov (United States)

    Hammes, Daniel M.; Peternell, Mark

    2016-05-01

    Determination of rock microstructures leads to a better understanding of the formation and deformation of polycrystalline solids. Here, we present FAME (Fabric Analyser based Microstructure Evaluation), an easy-to-use MATLAB®-based software for processing datasets recorded by an automated fabric analyser microscope. FAME is provided as a MATLAB®-independent Windows® executable with an intuitive graphical user interface. Raw data from the fabric analyser microscope can be automatically loaded, filtered and cropped before analysis. Accurate and efficient rock microstructure analysis is based on an advanced user-controlled grain labelling algorithm. The preview and testing environments simplify the determination of appropriate analysis parameters. Various statistic and plotting tools allow a graphical visualisation of the results such as grain size, shape, c-axis orientation and misorientation. The FAME2elle algorithm exports fabric analyser data to an elle (modelling software)-supported format. FAME supports batch processing for multiple thin section analysis or large datasets that are generated for example during 2D in-situ deformation experiments. The use and versatility of FAME is demonstrated on quartz and deuterium ice samples.

  17. Uncertainty quantification approaches for advanced reactor analyses.

    Energy Technology Data Exchange (ETDEWEB)

    Briggs, L. L.; Nuclear Engineering Division

    2009-03-24

    The original approach to nuclear reactor design or safety analyses was to make very conservative modeling assumptions so as to ensure meeting the required safety margins. Traditional regulation, as established by the U. S. Nuclear Regulatory Commission required conservatisms which have subsequently been shown to be excessive. The commission has therefore moved away from excessively conservative evaluations and has determined best-estimate calculations to be an acceptable alternative to conservative models, provided the best-estimate results are accompanied by an uncertainty evaluation which can demonstrate that, when a set of analysis cases which statistically account for uncertainties of all types are generated, there is a 95% probability that at least 95% of the cases meet the safety margins. To date, nearly all published work addressing uncertainty evaluations of nuclear power plant calculations has focused on light water reactors and on large-break loss-of-coolant accident (LBLOCA) analyses. However, there is nothing in the uncertainty evaluation methodologies that is limited to a specific type of reactor or to specific types of plant scenarios. These same methodologies can be equally well applied to analyses for high-temperature gas-cooled reactors and to liquid metal reactors, and they can be applied to steady-state calculations, operational transients, or severe accident scenarios. This report reviews and compares both statistical and deterministic uncertainty evaluation approaches. Recommendations are given for selection of an uncertainty methodology and for considerations to be factored into the process of evaluating uncertainties for advanced reactor best-estimate analyses.

  18. Hybrid Logical Analyses of the Ambient Calculus

    DEFF Research Database (Denmark)

    Bolander, Thomas; Hansen, Rene Rydhof

    2010-01-01

    In this paper, hybrid logic is used to formulate three control flow analyses for Mobile Ambients, a process calculus designed for modelling mobility. We show that hybrid logic is very well-suited to express the semantic structure of the ambient calculus and how features of hybrid logic can be...

  19. Meta-analyses on viral hepatitis

    DEFF Research Database (Denmark)

    Gluud, Lise L; Gluud, Christian

    2009-01-01

    This article summarizes the meta-analyses of interventions for viral hepatitis A, B, and C. Some of the interventions assessed are described in small trials with unclear bias control. Other interventions are supported by large, high-quality trials. Although attempts have been made to adjust...

  20. Modelling and Analysing Socio-Technical Systems

    DEFF Research Database (Denmark)

    Aslanyan, Zaruhi; Ivanova, Marieta Georgieva; Nielson, Flemming;

    2015-01-01

    and assessing attacks. In our work we model all relevant levels of socio-technical systems, and propose evaluation techniques for analysing the security properties of the model. Our approach simplifies the identification of possible attacks and provides qualified assessment and ranking of attacks based...

  1. Automated Quality Assurance of Online NIR Analysers

    Directory of Open Access Journals (Sweden)

    Kari Aaljoki

    2005-01-01

    Full Text Available Modern NIR analysers produce valuable data for closed-loop process control and optimisation practically in real time. Thus it is highly important to keep them in the best possible shape. Quality assurance (QA of NIR analysers is an interesting and complex issue because it is not only the instrument and sample handling that has to be monitored. At the same time, validity of prediction models has to be assured. A system for fully automated QA of NIR analysers is described. The system takes care of collecting and organising spectra from various instruments, relevant laboratory, and process management system (PMS data. Validation of spectra is based on simple diagnostics values derived from the spectra. Predictions are validated against laboratory (LIMS or other online analyser results (collected from PMS. The system features automated alarming, reporting, trending, and charting functions for major key variables for easy visual inspection. Various textual and graphical reports are sent to maintenance people through email. The software was written with Borland Delphi 7 Enterprise. Oracle and PMS ODBC interfaces were used for accessing LIMS and PMS data using appropriate SQL queries. It will be shown that it is possible to take actions even before the quality of predictions is seriously affected, thus maximising the overall uptime of the instrument.

  2. Masonry: Task Analyses. Competency-Based Education.

    Science.gov (United States)

    Henrico County Public Schools, Glen Allen, VA. Virginia Vocational Curriculum Center.

    These task analyses are designed to be used in combination with the "Trade and Industrial Education Service Area Resource" in order to implement competency-based education in the masonry program in Virginia. The task analysis document contains the task inventory, suggested task sequence lists, and content outlines for the secondary courses Masonry…

  3. The Economic Cost of Homosexuality: Multilevel Analyses

    Science.gov (United States)

    Baumle, Amanda K.; Poston, Dudley, Jr.

    2011-01-01

    This article builds on earlier studies that have examined "the economic cost of homosexuality," by using data from the 2000 U.S. Census and by employing multilevel analyses. Our findings indicate that partnered gay men experience a 12.5 percent earnings penalty compared to married heterosexual men, and a statistically insignificant earnings…

  4. Micromechanical photothermal analyser of microfluidic samples

    DEFF Research Database (Denmark)

    2014-01-01

    The present invention relates to a micromechanical photothermal analyser of microfluidic samples comprising an oblong micro-channel extending longitudinally from a support element, the micro-channel is made from at least two materials with different thermal expansion coefficients, wherein the...

  5. Random error in cardiovascular meta-analyses

    DEFF Research Database (Denmark)

    Albalawi, Zaina; McAlister, Finlay A; Thorlund, Kristian; Wong, Michelle; Wetterslev, Jørn

    2013-01-01

    and/or their cumulative Z-curve crossed the O'Brien-Fleming monitoring boundaries for detecting a RRR of at least 25%. We classified meta-analyses that did not achieve statistical significance as true negatives if their pooled sample size was sufficient to reject a RRR of 25%. RESULTS: Twenty three...

  6. Chemical Analyses of Silicon Aerogel Samples

    CERN Document Server

    van der Werf, I; De Leo, R; Marrone, S

    2008-01-01

    After five years of operating, two Aerogel counters: A1 and A2, taking data in Hall A at Jefferson Lab, suffered a loss of performance. In this note possible causes of degradation have been studied. In particular, various chemical and physical analyses have been carried out on several Aerogel tiles and on adhesive tape in order to reveal the presence of contaminants.

  7. Cosmetology: Task Analyses. Competency-Based Education.

    Science.gov (United States)

    Henrico County Public Schools, Glen Allen, VA. Virginia Vocational Curriculum Center.

    These task analyses are designed to be used in combination with the "Trade and Industrial Education Service Area Resource" in order to implement competency-based education in the cosmetology program in Virginia. The task analysis document contains the task inventory, suggested task sequence lists, and content outlines for the secondary courses…

  8. Theoretical demonstration of the hybrid focusing points of sonic crystal flat lenses and possible applications

    International Nuclear Information System (INIS)

    We demonstrate the hybrid focusing points of sonic crystals for a multi-source array applied to flat sonic crystal lenses. The contributions of different point source couples form hybrid focusing points. Ray-trace analyses are conducted for acoustic flat lenses with multi-source configurations. The finite-difference time-domain (FDTD) simulation of flat lenses with multi-source configurations demonstrates the establishment of pure and hybrid focusing points in a pyramidal constellation. The number of focusing points in the pyramidal constellation depends on the number of point sources. We propose an acoustic device for fine-tuning the location of a far-field hybrid focusing point and discuss its benefits for acoustic energy focusing application

  9. Professional SharePoint 2013 administration

    CERN Document Server

    Young, Shane; Klindt, Todd

    2013-01-01

    SharePoint admin author gurus return to prepare you for working with the new features of SharePoint 2013! The new iteration of SharePoint boasts exciting new features. However, any new version also comes with its fair share of challenges and that's where this book comes in. The team of SharePoint admin gurus returns to presents a fully updated resource that prepares you for making all the new SharePoint 2013 features work right. They cover all of the administration components of SharePoint 2013 in detail, and present a clear understanding of how they affect the role of the adminis

  10. Professional SharePoint 2010 Development

    CERN Document Server

    Rizzo, Tom; Fried, Jeff; Swider, Paul J; Hillier, Scot; Schaefer, Kenneth

    2012-01-01

    Updated guidance on how to take advantage of the newest features of SharePoint programmability More than simply a portal, SharePoint is Microsoft's popular content management solution for building intranets and websites or hosting wikis and blogs. Offering broad coverage on all aspects of development for the SharePoint platform, this comprehensive book shows you exactly what SharePoint does, how to build solutions, and what features are accessible within SharePoint. Written by a team of SharePoint experts, this new edition offers an extensive selection of field-tested best practices that shows

  11. SharePoint 2010 Field Guide

    CERN Document Server

    Mann, Steven; Gazmuri, Pablo; Caravajal, Steve; Wheeler, Christina

    2012-01-01

    Hands-on solutions for common SharePoint 2010 challenges Aimed at the more than 100 million licensed SharePoint 2010 users, this indispensable field guide addresses an abundance of common SharePoint 2010 problems and offers proven solutions. A team of authors encourages you to customize SharePoint beyond the out-of-the-box functionality so that you can build more complex solutions to these challenges. You?ll discover intricate details and specific full-scale solutions that you can then implement to your own SharePoint 2010 solutions.Tackles a variety of SharePoint 2010 problems ranging from si

  12. RBMK-LOCA-Analyses with the ATHLET-Code

    International Nuclear Information System (INIS)

    The scientific technical cooperation between Germany and Russia includes the area of adaptation of several German codes for the Russian-designed RBMK-reactor. One point of this cooperation is the adaptation of the Thermal-Hydraulic code ATHLET (Analyses of the Thermal-Hydraulics of LEaks and Transients), for RBMK-specific safety problems. This paper contains a short description of a RBMK-1000 reactor circuit. Furthermore, the main features of the thermal-hydraulic code ATHLET are presented. The main assumptions for the ATHLET-RBMK model are discussed. As an example for the application, the results of test calculations concerning a guillotine type rupture of a distribution group header are presented and discussed, and the general analysis conditions are described. A comparison with corresponding RELAP-calculations is given. This paper gives an overview on some problems posed and experience by application of Western best-estimate codes for RBMK-calculations

  13. RBMK-LOCA-Analyses with the ATHLET-Code

    Energy Technology Data Exchange (ETDEWEB)

    Petry, A. [Gesellschaft fuer Anlagen- und Reaktorsicherheit (GRS) mbH Kurfuerstendamm, Berlin (Germany); Domoradov, A.; Finjakin, A. [Research and Development Institute of Power Engineering, Moscow (Russian Federation)

    1995-09-01

    The scientific technical cooperation between Germany and Russia includes the area of adaptation of several German codes for the Russian-designed RBMK-reactor. One point of this cooperation is the adaptation of the Thermal-Hydraulic code ATHLET (Analyses of the Thermal-Hydraulics of LEaks and Transients), for RBMK-specific safety problems. This paper contains a short description of a RBMK-1000 reactor circuit. Furthermore, the main features of the thermal-hydraulic code ATHLET are presented. The main assumptions for the ATHLET-RBMK model are discussed. As an example for the application, the results of test calculations concerning a guillotine type rupture of a distribution group header are presented and discussed, and the general analysis conditions are described. A comparison with corresponding RELAP-calculations is given. This paper gives an overview on some problems posed and experience by application of Western best-estimate codes for RBMK-calculations.

  14. Crossing point temperature of coal

    Institute of Scientific and Technical Information of China (English)

    Qi Xuyao; Deming Wang; James A. Milke; Xiaoxing Zhong

    2011-01-01

    A further understanding of the self-heating of coal was obtained by investigating the crossing point temperature (CPT) of different ranks of coal. The tests were carried out using a self-designed experimental system for coal self-heating. 50 g (±0.01 g) of coal particles ranging from 0.18 mm to 0.38 mm in size were put into a pure copper reaction vessel attached to the center of a temperature programmed enclosure. The temperature program increased the temperature at a rate of 0.8 ℃/min. Dry air was permitted to flow into the coal reaction vessel at different rates. The surrounding temperature and the coal temperature were monitored by a temperature logger. The results indicate that CPT is affected by coal rank, moisture, sulfur,and the experimental conditions. Higher ranked coals show higher CPT values. A high moisture content causes a delay phenomenon during the self-heating of the coal. Drying at 40 ℃ decreases the effects of moisture. The reactivity of sulfur components in the coal is low under dry and low-temperature conditions.These components form a film that covers the coal surface and slightly inhibits the self-heating of the coal.The flow rate of dry air, and the heating rate of the surroundings, also affect the self-heating of the coal. The most appropriate experimental conditions for coal samples of a given weight and particle size were determined through contrastive analysis. Based on this analysis we propose that CPTs be determined under the same, or nearly the same conditions, for evaluation of the spontaneous combustion of coal.

  15. L'analyse qualitative comme approche multiple

    Directory of Open Access Journals (Sweden)

    Roberto Cipriani

    2009-11-01

    Full Text Available L’exemple de l’enquête historique, visant à identifier les caractéristiques de la naissance et du développement d’une science et des lectures qu’elle donne des événements sociaux, est des plus originaux. Toute méthodologie historique non seulement débouche sur une pure et simple masse d’épisodes et d’événements, mais est également une narration et une élaboration critique de ces mêmes faits. Michael Postan écrit à juste titre que la complexité des données historiques est cependant de telle nature, et les différences et les similitudes tellement difficiles à cerner, que les efforts des historiens et des sociologues pour construire des comparaisons explicites se sont soldées, pour la plupart, par des tentatives grossières et naïves. La leçon des Annales a contribué en effet à construire l’idée d’une histoire qui puisse lire et expliquer ce qui est uniforme et ce qui est singulier. Rien de plus naturel que la réunion d’« êtres psychiques », à l’instar de l’assemblage des cellules en un organisme, en un « être psychique » nouveau et différent. Un tournant s’impose donc vers une expérimentation empirique plus ample et plus correcte, afin de disposer des instruments adéquats, capables de garantir à la méthodologie micro, qualitative et biographique, une fiabilité suffisante.Historical approach offers a relevant contribution in order to find the features of birth and development of a science which analyses social events. Historical methodology produces not only a lot of data but also a narrative, and an interpretation of facts. According to Michael Postan, history and sociology have made many efforts to compare data that are complex but similar and different at the same time. And the results seem to be naïf. Thanks to Les Annales suggestion it is possible to read and to explain what is uniform and what is singular. To put together “psychical beings”, like organic cells, in a new

  16. Analyses of severe fuel damage tests and TMI-2 core damage behavior with the SEFDAN code

    International Nuclear Information System (INIS)

    A one-dimensional thermal-hydraulic code SEFDAN has been developed and applied to analyses of severe fuel damage tests in the PBF and NIELS facilities, and to analyses of TMI-2 core damage behavior. The calculated results are in good agreement with the measured or observed results. The analyses indicate that the fuel cladding temperature would have reached the melting point of zirconium-dioxide in the PBF.SFD tests and in the TMI-2 accident, and that fuel temperature would have reached the melting point of uranium-dioxide in the PBF.SFD Scoping Test and TMI-2. In leading fuel rods to such a high temperature, the crucibilization effect of the zirconium-dioxide layer plays an essential role, because it retains the molten Zr and sustains the zirconium-water reaction of the molten Zr

  17. Do Danish food companies analyse their competitors?

    DEFF Research Database (Denmark)

    Grunert, Klaus G.; Nissen, Lars; Wildenhoff, Lars

    1993-01-01

    Executive summary: 1. Modern marketing knowledge points out that competitor analysis is equally important as customer analysis for the attainment of sustainable competitive advantage, given the ways in which market environments have changed in the seventies and eighties. 2. A study based on...

  18. A sequential point process model and Bayesian inference for spatial point patterns with linear structures

    DEFF Research Database (Denmark)

    Møller, Jesper; Rasmussen, Jakob Gulddahl

    We introduce a flexible spatial point process model for spatial point patterns exhibiting linear structures, without incorporating a latent line process. The model is given by an underlying sequential point process model, i.e. each new point is generated given the previous points. Under this model...... previous points is such that the dependent cluster point is likely to occur closely to a previous cluster point. We demonstrate the flexibility of the model for producing point patterns with linear structures, and propose to use the model as the likelihood in a Bayesian setting when analyzing a spatial...

  19. Tallahatchie NWR - Landbird Point Counts in 2009

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Avian point counts were done in selected areas of mature forest on Tallahatchie Refuge in 2009. Report contains summary of avain point counts done in mature...

  20. State Wildlife Management Area Public Facilities - points

    Data.gov (United States)

    Minnesota Department of Natural Resources — This point theme contains facilities and features for WMAs that are best represented as points. WMAs are part of the Minnesota state recreation system created to...