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Wyświetlanie 1-15 z 93
Tytuł:
Some remarks on evaluating the quality of the multiple sequence alignment based on the BAliBASE benchmark
Autorzy:
Błażewicz, J.
Formanowicz, P.
Wojciechowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/930013.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
dostosowanie odniesienia
dokładność ustawienia
multiple sequence alignment
reference alignment
alignment accuracy
Opis:
BAliBASE is one of the most widely used benchmarks for multiple sequence alignment programs. The accuracy of alignment methods is measured by bali score-an application provided together with the database. The standard accuracy measures are the Sum of Pairs (SP) and the Total Column (TC). We have found that, for non-core block columns, results calculated by bali score are different from those obtained on the basis of the formal definitions of the measures. We do not claim that one of these measures is better than the other, but they are definitely different. Such a situation can be the source of confusion when alignments obtained using various methods are compared. Therefore, we propose a new nomenclature for the measures of the quality of multiple sequence alignments to distinguish which one was actually calculated. Moreover, we have found that the occurrence of a gap in some column in the first sequence of the reference alignment causes column discarding.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2009, 19, 4; 675-678
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
G-PAS 2.0 - an improved version of protein alignment tool with an efficient backtracking routine on multiple GPUs
Autorzy:
Frohmberg, W.
Kierzynka, M.
Blazewicz, J.
Wojciechowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/201593.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pairwise alignment
GPU computing
alignment with backtracking procedure
Opis:
Several highly efficient alignment tools have been released over the past few years, including those taking advantage of GPUs (Graphics Processing Units). G-PAS (GPU-based Pairwise Alignment Software) was one of them, however, with a couple of interesting features that made it unique. Nevertheless, in order to adapt it to a new computational architecture some changes had to be introduced. In this paper we present G-PAS 2.0 - a new version of the software for performing high-throughput alignment. Results show, that the new version is faster nearly by a fourth on the same hardware, reaching over 20 GCUPS (Giga Cell Updates Per Second).
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 3; 491-494
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Limitations of notation system in centred part alignment accuracy imposed by ISO standard and proposal for an improved methodology
Autorzy:
Yan, Y.
Bohn, M.
Powiązania:
https://bibliotekanauki.pl/articles/99701.pdf
Data publikacji:
2017
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
geometrical product specifications
part alignment
datum
Opis:
According to the ISO Geometrical Product Specifications (GPS), centred part alignment with one centred point can be described clearly using technical drawings. There are two main limitations of this standard; Firstly: the uncertainty over use of notations in technical drawings when more than one centred point is applied, and secondly, the use of fixed datum targets to centred points which causes an unstable alignment process. This article suggests a new approach for a functional, explicitly defined notation system of datums and datum systems based on the research of orientation constraints between datums. This new approach simplifies the technical drawing, thereby eliminating notation uncertainties. An improved methodology for a stable alignment process was developed based on physical analysis of the centred part alignment which implements movable datum targets.
Źródło:
Journal of Machine Engineering; 2017, 17, 2; 90-101
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wal-Mart’s successfully integrated supply chain and the necessity of establishing the Triple-A supply chain in the 21st century
Autorzy:
Nguyen, Thi Thu Ha
Powiązania:
https://bibliotekanauki.pl/articles/522523.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Adaptability
Agility
Alignment
Integration
Supply chain
Opis:
Aim/purpose – The main purposes of the paper are to analyze features creating a Wal-Mart’s successful integrated supply chain that contributes its dominant position in the retail market and identify issues existing in Wal-Mart’s supply chain. Then some suggestions will be mentioned for Wal-Mart to establish the Triple-A supply chain. Methodology – This paper is based on literature studies for reviewing Wal-Mart’s integrated supply chain and designing an ideal Triple-A supply chain. Findings – The key findings indicate that it is necessary to build the Triple-A supply chain for not only Wal-Mart but also firms in the 21st century and in order to achieve an ideal supply chain, firms need to redesign its supply chain towards an integrated supply chain with three capabilities (agility, adaptability and alignment) in which aligning incentives can be seen as the most important component. Research implications/limitations – This research confirms that an integrated supply chain will be the first vital pre-requisite for a firm to improve the supply chain performance and achieve an ideal supply chain. However, a main limitation is that findings are only based on the literature. Contribution – It is suggested that in order to build a successful supply chain that enhances both short-run and long-run competitive advantages, firms should follow the idea of designing an ideal Triple-A supply chain with three capabilities including agility, adaptability and alignment, in which aligning incentives among participating partners can be seen as the most important feature.
Źródło:
Journal of Economics and Management; 2017, 29; 102-117
1732-1948
Pojawia się w:
Journal of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Albanian trade policy and the process of alignment with EU Common Commercial Policy
Autorzy:
Kastrati, Pranvera
Shehaj, Esmeralda
Powiązania:
https://bibliotekanauki.pl/articles/1036537.pdf
Data publikacji:
2015
Wydawca:
Academicus. International Scientific Journal publishing house
Tematy:
trade policy
alignment
commitments
accession obligations
Opis:
Albania is a member of WTO from September 2000 and is currently in a deep and substantial transformation of the trade policy. Albanian trade regime is very liberal, open and transparent fully compliant with WTO law. Accession to EU is the strategic goal of all Governments after ’90s and alignment with EU acquis is at the core of any process. EU integration is an engine for the development in all candidate or potential candidate countries. This process requires the alignment of national policies and harmonization of the legislation. Trade policy is among the most developed policies in European Union and Albania. This is mainly due to the membership in World Trade Organization (WTO) and Free Trade Agreements (FTA) with the most important trading partners. The accession of Albania to EU will significantly affect the Albanian trade policy. This paper analyses the state of play of Albanian trade policy and presents the main developments in the EU Common Commercial Policy after the Lisbon Treaty (2009). Based on this analysis the paper highlights the implications for Albanian trade policy.
Źródło:
Academicus International Scientific Journal; 2015, 12; 226-243
2079-3715
2309-1088
Pojawia się w:
Academicus International Scientific Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Active alignment chuck for ultra-precision machining
Autorzy:
Daghini, L.
Archenti, A.
Rashid, A.
Nicolescu, C. M.
Powiązania:
https://bibliotekanauki.pl/articles/99849.pdf
Data publikacji:
2011
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
ultraprecision machining
high damping interface
active alignment
Opis:
Ultraprecision (UP) components have become common in everyday life products such as mobile phones or compact high resolution digital cameras. Thus the need of producing such components with high accuracy and low production cost. UP machine tools are capable of extremely high accuracy in tool positioning but still today the workpiece is positioned by hand, hence the high production cost of UP components. A fully automated chain of production has been developed within the EU-IP project "Production 4 micro". This paper describes the active alignment chuck for workholding in UP machining. The chuck has been provided with a high damping interface (HDI) and to evaluate its efficiency the chuck has undergone an experimenta modal analysis (EMA) as well as machining tests. The chosen operation was grooving by fly cutting using a diamond tool. The EMA showed that the HDI was effective for those modes where there was relative displacement between one side and the other of the HDI. This result was confirmed by the machining tests as well. The HDI resulted being effective in damping high frequency modes (around 4 - 5 kHz), hence one expected benefit would be a longer tool life.
Źródło:
Journal of Machine Engineering; 2011, 11, 4; 39-48
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strategiczne wyzwania gamifikacji
Strategic challenges of gamification
Autorzy:
Strużyna, J.
Kania, K.
Powiązania:
https://bibliotekanauki.pl/articles/323955.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
gamifikacja
dopasowanie strategiczne
playbour
gamification
strategic alignment
Opis:
Postępujące zaangażowanie ludzi w gry i załamanie tradycyjnego podziału między pracą i zabawą tworzy nowe wyzwania dla zarządzających, a gamifikacja staje się strategicznym i innowacyjnym projektem, dzięki któremu organizacja ma szansę dopasować się do tego trendu społecznego. Istotne staje się odwzorowanie scenariusza rozwoju zachowań społecznych związanych z uczestnictwem w grach na działania wewnątrz organizacji. Opracowanie dostarcza wstępnego, oryginalnego projektu modelu rozwoju organizacji, jako konsekwencji wdrażania gamifikacji oraz dopasowuje istniejące definicje gamifikacji do potrzeb teorii zarządzania.
The progressive involvement of people in playing games and the collapse of the traditional division between work and play creates new challenges for managers. Mapping a scenario of social behavior related to participation in the games on activities within the organization, becomes an urgent task. The article provides initial design of the original model of development of the organization as a consequence of the implementation of the gamification and adapts existing definitions of gamification to the needs of the theory of management.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2016, 88; 289-298
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exit Bishop Tamer – the Sequel. A New Edition of the Epitaph of Papsine alias Doulista (DBMNT 78)
Autorzy:
van der Vliet, Jacques
Powiązania:
https://bibliotekanauki.pl/articles/484155.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Kultur Śródziemnomorskich i Orientalnych PAN
Tematy:
Nubia
Faras
Greek
bishops
women
alignment
centonisation
Opis:
Re-edition of a twelfth-century epitaph in Greek (Turin, Museo Egizio, Cat. 7142), formerly attributed to a bishop of Faras in Nubia. In addition to presenting a new text, based on autopsy, the article discusses the ownership of the monument and advocates a new understanding of the linguistic and textual form of the epitaph.
Źródło:
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences); 2019, 32; 217-235
2084-6762
2449-9579
Pojawia się w:
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences)
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
G-DNA – a highly efficient multi-GPU/MPI tool for aligning nucleotide reads
Autorzy:
Frohmberg, W.
Kierzynka, M.
Blazewicz, J.
Gawron, P.
Wojciechowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/200827.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DNA assembly preprocessing
sequence alignment
GPU computing
Opis:
DNA/RNA sequencing has recently become a primary way researchers generate biological data for further analysis. Assembling algorithms are an integral part of this process. However, some of them require pairwise alignment to be applied to a great deal of reads. Although several efficient alignment tools have been released over the past few years, including those taking advantage of GPUs (Graphics Processing Units), none of them directly targets high-throughput sequencing data. As a result, a need arose to create software that could handle such data as effectively as possible. G-DNA (GPU-based DNA aligner) is the first highly parallel solution that has been optimized to process nucleotide reads (DNA/RNA) from modern sequencing machines. Results show that the software reaches up to 89 GCUPS (Giga Cell Updates Per Second) on a single GPU and as a result it is the fastest tool in its class. Moreover, it scales up well on multiple GPUs systems, including MPI-based computational clusters, where its performance is counted in TCUPS (Tera CUPS).
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 989-992
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient alternatives to PSI-BLAST
Autorzy:
Startek, M.
Lasota, S.
Sykulski, M.
Bułak, A.
Noé, L.
Kucherov, G.
Gambin, A.
Powiązania:
https://bibliotekanauki.pl/articles/201603.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
PSI BLAST tool
sequence alignment
seeding technique
Opis:
In this paper we present two algorithms that may serve as efficient alternatives to the well-known PSI BLAST tool: SeedBLAST and CTX-PSI Blast. Both may benefit from the knowledge about amino acid composition specific to a given protein family: SeedBLAST uses the advisedly designed seed, while CTX-PSI BLAST extends PSI BLAST with the context-specific substitution model. The seeding technique became central in the theory of sequence alignment. There are several efficient tools applying seeds to DNA homology search, but not to protein homology search. In this paper we fill this gap. We advocate the use of multiple subset seeds derived from a hierarchical tree of amino acid residues. Our method computes, by an evolutionary algorithm, seeds that are specifically designed for a given protein family. The seeds are represented by deterministic finite automata (DFAs) and built into the NCBI-BLAST software. This extended tool, named SeedBLAST, is compared to the original BLAST and PSI-BLAST on several protein families. Our results demonstrate a superiority of SeedBLAST in terms of efficiency, especially in the case of twilight zone hits. The contextual substitution model has been proven to increase sensitivity of protein alignment. In this paper we perform a next step in the contextual alignment program. We announce a contextual version of the PSI-BLAST algorithm, an iterative version of the NCBI-BLAST tool. The experimental evaluation has been performed demonstrating a significantly higher sensitivity compared to the ordinary PSI-BLAST algorithm.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 3; 495-505
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Macroscopic model formulae describing anisotropic anchoring of nematic liquid crystals on solid substrates
Makroskopowe modele anizotropowego kotwiczenia nematycznych ciekłych kryształów na powierzchniach ciał stałych
Autorzy:
Derfel, G.
Buczkowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/296500.pdf
Data publikacji:
2015
Wydawca:
Politechnika Łódzka. Wydawnictwo Politechniki Łódzkiej
Tematy:
nematics
anchoring strength
director alignment
nematyk
siła kotwiczenia
Opis:
Formulae used for description of anchoring energy of nematic liquid crystal aligned on solid substrates are reviewed. They are based on macroscopic approach considering the concepts of the easy axis and of the anchoring strength parameters. Properties of the modified formula proposed in our earlier article are illustrated by exemplary plots which allows for comparison with other formulae. The modified formula describes the dependence of energy on the azimuthal and polar deviation of director from the easy axis and is valid qualitatively for deviation of any magnitude.
Artykuł zawiera przegląd wzorów stosowanych do opisu energii kotwiczenia ciekłych kryształów nematycznych na powierzchniach ciał stałych. Wywodzą się one z makroskopowego podejścia wykorzystującego pojęcie osi łatwej i energetyczne parametry opisujące oddziaływanie ciekłego kryształu z podłożem. Opisano właściwości zaproponowanego we wcześniejszym artykule zmodyfikowanego wzoru, uwzględniającego anizotropię oddziaływania powierzchniowego, który ujmuje zależność energii kotwiczenia od odchylenia direktora od osi łatwej i jest słuszny jakościowo dla odchylenia o dowolnej wielkości. Zilustrowano go przykładowymi wykresami pozwalającymi na porównanie z innymi wzorami.
Źródło:
Scientific Bulletin. Physics / Technical University of Łódź; 2015, 36; 5-12
1505-1013
2449-982X
Pojawia się w:
Scientific Bulletin. Physics / Technical University of Łódź
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The technical aspects of protection of inland navigation
Techniczne aspekty zabezpieczenia żeglugi śródlądowej
Autorzy:
Anigacz, W.
Powiązania:
https://bibliotekanauki.pl/articles/955985.pdf
Data publikacji:
2013
Wydawca:
Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
Tematy:
inland navigation
sluice
alignment
żegluga śródlądowa
śluza
osiowanie
Opis:
In the article the problem of preserving geometric design conditions by devices of sluices is presented. The problem was illustrated by alignment of the shaft flap of the sluice on the Gliwicki Channel. Within changing the flap drive it was necessary also to perform the realignment of the flap. From the geodetic point of view, the problem was to perform coaxial setting of the two mutually invisible shafts flap within an accuracy not exceeding 0.5 mm. Thanks to first — class measuring equipment and aiding equipments (author’s patents) it was possible to achieve this goal.
W artykule przedstawiono problem zachowania projektowych warunków geometrycznych przez urządzenia śluz, co zilustrowano osiowaniem klapy śluzy na Kanale Gliwickim. Przy okazji zmiany sposobu napędu klapy zaszła konieczność jej ponownego osiowania. Z geodezyjnego punktu widzenia problem polegał na współosiowym ustawieniu dwóch wzajemnie niewidocznych wałów klapy z dokładnością nieprzekraczającą 0,5 mm. Dzięki zastosowaniu sprzętu pomiarowego najwyższej klasy oraz urządzeń wspomagających (patentów autora) udało się osiągnąć zamierzony cel.
Źródło:
Zeszyty Naukowe Akademii Marynarki Wojennej; 2013, R. 54 nr 1 (192), 1 (192); 19-25
0860-889X
Pojawia się w:
Zeszyty Naukowe Akademii Marynarki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Introducing artificial neural network in ontologies alignment process
Autorzy:
Djeddi, W. E.
Khadir, M. T.
Powiązania:
https://bibliotekanauki.pl/articles/206314.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
artificial neural network
training
ontology alignment
WordNet
XMap++
Opis:
Ontology alignment uses different similaritymeasures of different categories such as string, linguistic, and structural based similarity measures to understand ontologies’ semantics. A weights vector must, therefore, be assigned to these similarity measures, if a more accurate and meaningful alignment result is favored. Combining multiple measures into a single similarity metric has been traditionally solved using weights determined manually by an expert, Or calculated through general methods (e.g. average or sigmoid function) that do not provide optimal results. In this paper, we propose an artificial neural network algorithm to ascertain how to Combie multiple similarity measures into a single aggregated metric with the final aim of improving the ontology alignment quality. XMap++ is applied to benchmark tests at OAEI campaign 2010. Results show that neural network boosts the performance in most cases, and that the proposed novel approach is competitive with top-ranked system.
Źródło:
Control and Cybernetics; 2012, 41, 4; 743-759
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of genetic semihomology algorithm to theoretical studies on various protein families.
Autorzy:
Leluk, Jacek
Hanus-Lorenz, Beata
Sikorski, Aleksander
Powiązania:
https://bibliotekanauki.pl/articles/1044159.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
multiple alignment
cryptic mutations
genetic semihomology
sequence consensus
Opis:
Several protein families of different nature were studied for genetic relationship, correct alignment at non-homologous fragments, optimal sequence consensus construction, and confirmation of their actual relevance. A comparison of the genetic semihomology approach with statistical approaches indicates a high accuracy and cognition significance of the former. This is particularly pronounced in the study of related proteins that show a low degree of homology. The sequence multiple alignments were verified and corrected with respect to the questionable, non-homologous fragments. The verified alignments were the basis for consensus sequence formation. The frequency of six-codon amino acids occurrence versus position variability was studied and their possible role in amino acid mutational exchange at variable positions is discussed.
Źródło:
Acta Biochimica Polonica; 2001, 48, 1; 21-33
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Political alignment and the allocation of the COVID-19 response funds-evidence from municipalities in Poland
Autorzy:
Matuszak, Piotr
Totleben, Bartosz
Piątek, Dawid
Powiązania:
https://bibliotekanauki.pl/articles/2034005.pdf
Data publikacji:
2022-04-15
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
political alignment
COVID-19 response funds
public spending
Opis:
This paper aims to analyse the allocation of the COVID-19 response funds from the perspective of the political alignment hypothesis. eTh authors focus on the allocation of the second and third rounds of the Governmental Fund for Local Investments (part of the COVID-19 Response Fund) in Poland. Using the logit and OLS models and the regression discontinuity design the authors show that mayors aligned with the central government were significantly more likely to receive the funds, as well as in higher per capita values, than mayors aligned with the opposition or unaligned with any party in parliament when the allocation was based on a discretionary decision. eTh results support the political alignment hypothesis and highlight the danger of partiality in the allocation of the COVID-19 response funds.
Źródło:
Economics and Business Review; 2022, 8, 1; 50-71
2392-1641
Pojawia się w:
Economics and Business Review
Dostawca treści:
Biblioteka Nauki
Artykuł
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