A new method to index and store spatio-temporal data / دانلود فایل

مشخصات کلی A new method to index and store spatio-temporal data

نویسنده کتاب (Author):

Bernardo Roca, Guillermo de; Casares, Ramón; Gómez Brandón, Adrián; Paramá Gabia, José Ramón

انتشارات (Publisher):

2016-11-16

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

bernardo-guillermo-de-casares-ramon-gomez-brandon-adrian-and-parama-jose-r-a-new-method-to-index-and-store-spatio-temporal-data-2016-pacis-2016-procee

موضوع (Subject):

Object trajectories       Data structure       K2-tree      

توضیحات خلاصه (Summary):

[Abstract] We propose a data structure that stores, in a compressed way, object trajectories, which at the same time, allow to efficiently response queries without the need to decompress the data. We use a data structure, called K2-tree, to store the full position of all objects at regular time intervals. For storing the positions of objects between two time instants represented with K2-trees, we only encode the relative movements. In order to save space, those relative moments are encoded with only one integer, instead of two (x,y)-coordinates. Moreover, the resulting integers are further compressed with a technique that allows us to manipulate those movements directly in compressed form. In this paper, we show an experimental evaluation of this structure, which shows important savings in space and good response times.  Read more…

ژانر / فرم:info:eu-repo/semantics/conferenceObject

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Bernardo Roca, Guillermo de; Casares, Ramón; Gómez Brandón, Adrián; Paramá Gabia, José Ramón

شناسه OCLC:979265489

Language Note:English

فهرست محتوا:http://hdl.handle.net/2183/18192

Resurrection of “Galathowenia australis” (Polychaeta, Oweniidae) based upon type material / دانلود فایل

مشخصات کلی Resurrection of “Galathowenia australis” (Polychaeta, Oweniidae) based upon type material

نویسنده کتاب (Author):

Parapar, Julio

انتشارات (Publisher):

Station Biologique de Roscoff 2003

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

parapar-j-2003-resurrection-of-galathowenia-australis-polychaeta-oweniidae-based-upon-type-material-cahiers-de-biologie-marine-443249-255

موضوع (Subject):

Annelida       Polychaeta       Oweniidae       View all subjects      

توضیحات خلاصه (Summary):

[Abstract] From the examination of the syntypes, Psammocollus australis (Polychaeta: Oweniidae), type locality Saint Paul Island (subantarctic region of the Indian Ocean), is considered valid and resurrected. The species is redescribed and a lectotype and paralectotypes are designated. The genus Psammocollus is removed from synonymy with Myriochele and is considered to be a senior subjective synonym of the genus Galathowenia. The species Galathowenia australis, characterized by the presence of notopodial short capillary chaetae, is compared with other eleven species of Galathowenia.[Résumé] Rétablissement de Galathowenia australis d’après l’étude du matériel type. A partir de l’examen des syntypes, Psammocollus australis (Polychaeta: Oweniidae), dont la localité type est l’île de Saint Paul (région subantarctique de l’Ocean Indien), est rétablie comme une espèce valide. Cette espèce est redécrite et le lectotype et des paralectotypes sont désignés. Le genre Psammocollus n’est plus considéré comme synonyme de Myriochele mais comme un synonyme subjectif ancien du genre Galathowenia. L’espèce Galathowenia australis, caractérisée par la présence de petites soies capillaires notopodiales, est comparée à onze autres espèces de Galathowenia.  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Parapar, Julio

شناسه OCLC:979265413

Language Note:English

فهرست محتوا:2262-3094 http://hdl.handle.net/2183/17867

Hedgehog signalling as a target in cancer stem cells / دانلود فایل

مشخصات کلی Hedgehog signalling as a target in cancer stem cells

نویسنده کتاب (Author):

Medina Villaamil, Vanessa; Blanco Calvo, Moisés; Díaz Prado, Silvia; Espada, Jesús

انتشارات (Publisher):

Spirnger 2009

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

medina-v-calvo-mb-diaz-prado-s-espada-j-hedgehog-signalling-as-a-target-in-cancer-stem-cells-clin-transl-oncol-2009114199-207

موضوع (Subject):

Hh (Hedgehog)       Smoothened (Smo)       Patched (Ptc)       View all subjects      

توضیحات خلاصه (Summary):

[Abstract] Hedgehog (Hh) is one of the most important signalling pathways. Together with the Wnt, TGF-β/BMP and Notch pathways, it is involved in both embryonic development and adult tissue homeostasis. This is because Hh plays a central role in the proliferative control and differentiation of both embryonic stem cells and adult stem cells. In this way, an alteration in the Hh pathway, either by misexpression of components of that pathway or by changes in the expression of other cellular components that interfere with the Hh signalling system, may trigger the development of several types of cancer. This occurs because normal stem cells or their intermediaries toward differentiated mature cells are not part of the normal proliferative/differentiation balance and begin to expand without control, triggering the generation of the so-called cancer stem cells. In this review, we will focus on the molecular aspects and the role of Hh signalling in normal tissues and in tumour development.  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Medina Villaamil, Vanessa; Blanco Calvo, Moisés; Díaz Prado, Silvia; Espada, Jesús

شناسه OCLC:979265406

Language Note:English

فهرست محتوا:1699-048X 1578-195X http://hdl.handle.net/2183/17648

Experimental and computational studies of fatty acid distribution networks / دانلود فایل

مشخصات کلی Experimental and computational studies of fatty acid distribution networks

نویسنده کتاب (Author):

Liu, Yong; Buendía-Rodríguez, Germán; Peñuelas-Rivas, Claudia Giovanna; Tan, Zhiliang; Rivas-Guevara, María; Tenorio-Borroto, Esvieta; Munteanu, Cristian-Robert; Pazos, A.; González-Díaz, Humberto

انتشارات (Publisher):

Royal Society of Chemistry 2015-08-06

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

liu-y-buendia-rodriguez-g-pen%cc%83uelas-rivas-c-tan-z-rivas-guevara-m-tenorio-barroto-e-et-al-experimental-and-computational-studies-of-fatty-acid-distribution-networks-mol-biosys

توضیحات خلاصه (Summary):

[Abstract] Unbalanced uptake of Omega 6/Omega 3 (ω-6/ω-3) ratios could increase chronic disease occurrences, such as inflammation, atherosclerosis, or tumor proliferation, and methylation methods for measuring the ruminal microbiome fatty acid (FA) composition/distribution play a vital role in discovering the contribution of food components to ruminant products (e.g., meat and milk) when pursuing a healthy diet. Hansch’s models based on Linear Free Energy Relationships (LFERs) using physicochemical parameters, such as partition coefficients, molar refractivity, and polarizability, as input variables (Vk) are advocated. In this work, a new combined experimental and theoretical strategy was proposed to study the effect of ω-6/ω-3 ratios, FA chemical structure, and other factors over FA distribution networks in the ruminal microbiome. In step 1, experiments were carried out to measure long chain fatty acid (LCFA) profiles in the rumen microbiome (bacterial and protozoan), and volatile fatty acids (VFAs) in fermentation media. In step 2, the proportions and physicochemical parameter values of LCFAs and VFAs were calculated under different boundary conditions (cj) like c1 = acid and/or base methylation treatments, c2 = with/without fermentation, c3 = FA distribution phase (media, bacterial, or protozoan microbiome), etc. In step 3, Perturbation Theory (PT) and LFER ideas were combined to develop a PT-LFER model of a FA distribution network using physicochemical parameters (Vk), the corresponding Box–Jenkins (ΔVkj) and PT operators (ΔΔVkj) in statistical analysis. The best PT-LFER model found predicted the effects of perturbations over the FA distribution network with sensitivity, specificity, and accuracy > 80% for 407[thin space (1/6-em)]655 cases in training + external validation series. In step 4, alternative PT-LFER and PT-NLFER models were tested for training Linear and Non-Linear Artificial Neural Networks (ANNs). PT-NLFER models based on ANNs presented better perf  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Liu, Yong; Buendía-Rodríguez, Germán; Peñuelas-Rivas, Claudia Giovanna; Tan, Zhiliang; Rivas-Guevara, María; Tenorio-Borroto, Esvieta; Munteanu, Cristian-Robert; Pazos, A.; González-Díaz, Humberto

شناسه OCLC:979265383

Language Note:English

فهرست محتوا:http://hdl.handle.net/2183/17474

Using genetic algorithms to improve support vector regression in the analysis of atomic spectra of lubricant oils / دانلود فایل

مشخصات کلی Using genetic algorithms to improve support vector regression in the analysis of atomic spectra of lubricant oils

نویسنده کتاب (Author):

Fernández-Lozano, Carlos; Cedrón, Francisco; Rivero, Daniel; Dorado, Julián; Andrade Garda, José Manuel; Pazos, A.; Gestal, Marcos

انتشارات (Publisher):

Emerald 2016-06

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

fernandez-lozano-c-cedron-f-rivero-d-dorado-j-andrade-garda-jm-pazos-a-gestal-m-using-genetic-algorithms-to-improve-support-vector-regression-in-the-analysis-of-atomic-spectra-of-lu

موضوع (Subject):

Genetic algorithms       Lubricant oils       Support       View all subjects      

توضیحات خلاصه (Summary):

[Abstract] Purpose – The purpose of this paper is to assess the quality of commercial lubricant oils. A spectroscopic method was used in combination with multivariate regression techniques (ordinary multivariate multiple regression, principal components analysis, partial least squares, and support vector regression (SVR)). Design/methodology/approach – The rationale behind the use of SVR was the fuzzy characteristics of the signal and its inherent ability to find nonlinear, global solutions in highly complex dimensional input spaces. Thus, SVR allows extracting useful information from calibration samples that makes it possible to characterize physical-chemical properties of the lubricant oils. Findings – A dataset of 42 spectra measured from oil standards was studied to assess the concentration of copper into the oils and, thus, evaluate the wearing of the machinery. It was found that the use of SVR was very advantageous to get a regression model. Originality/value – The use of genetic algorithms coupled to SVR was considered in order to reduce the time needed to find the optimal parameters required to get a suitable prediction model.  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Fernández-Lozano, Carlos; Cedrón, Francisco; Rivero, Daniel; Dorado, Julián; Andrade Garda, José Manuel; Pazos, A.; Gestal, Marcos

شناسه OCLC:979265382

Language Note:English

فهرست محتوا:http://hdl.handle.net/2183/17500

Digital terrestrial television roll-out policies in Spain and the changing television scene in the context of analogue switch-off / دانلود فایل

مشخصات کلی Digital terrestrial television roll-out policies in Spain and the changing television scene in the context of analogue switch-off

نویسنده کتاب (Author):

Fernández Alonso, Isabel; Díaz-González, María-Jesús

انتشارات (Publisher):

Intellect Ltd. 2010

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

fernandez-alonso-i-and-diaz-gonzalez-m-j-2010-digital-terrestrial-television-roll-out-policies-in-spain-and-the-changing-television-scene-in-the-context-of-analogue

موضوع (Subject):

DTT       Spain       Analogue switch-off       View all subjects      

توضیحات خلاصه (Summary):

[Abstract]: This article describes and analyses the digital terrestrial television roll-out polices developed and applied in Spain by conservative and socialist governments (Partido Popular [1996–2004] and Partido Socialista Obrero Español [2004–2010], respectively) from the end of the 1990s until the analogue switch-off in April 2010. It also considers, from national, regional and local perspectives, the implications of this digitalization process for the terrestrial television scene in Spain. Finally, it points to a number of pending public policy issues and potential market trends. As a result of this process, Spain has become one of the first large Western European countries with a predominantly terrestrial television model to switch off analogue broadcasts.  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Fernández Alonso, Isabel; Díaz-González, María-Jesús

شناسه OCLC:979265378

Language Note:English

فهرست محتوا:2040-4182 http://hdl.handle.net/2183/17894

Pluralism in crisis: Transformations of the spanish DTT market in the context of the recession / دانلود فایل

مشخصات کلی Pluralism in crisis: Transformations of the spanish DTT market in the context of the recession

نویسنده کتاب (Author):

Fernández Alonso, Isabel; Díaz-González, María-Jesús

انتشارات (Publisher):

Intellect Ltd. 2013

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

fernandez-alonso-i-and-diaz-gonzalez-m-j-2013-pluralism-in-crisis-transformations-of-the-spanish-dtt-market-in-the-context-of-the-recession-international-j

موضوع (Subject):

DTT       Pluralism       Spain       View all subjects      

توضیحات خلاصه (Summary):

[Abstract]: This article discusses the most significant aspects of DTT’s evolution in Spain since the analogue switch-off in April 2010. It underscores the severe cutbacks affecting public-service television broadcasters and their impact, as well as a return to government control over the Spanish Broadcasting Corporation (RTVE) in particular. It also emphasises the major tendency towards concentration in the national private DTT market and the inviability of most regional and local broadcasters. All of these issues are analysed from the perspective of their worrying impact on pluralism.  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Fernández Alonso, Isabel; Díaz-González, María-Jesús

شناسه OCLC:979265375

Language Note:English

فهرست محتوا:2040-4182 http://hdl.handle.net/2183/17893

Graph-based processing of macromolecular information / دانلود فایل

مشخصات کلی Graph-based processing of macromolecular information

نویسنده کتاب (Author):

Munteanu, Cristian-Robert; Aguiar-Pulido, Vanessa; Freire, Ana; Martínez-Romero, Marcos; Porto-Pazos, Ana B.; Pereira-Loureiro, Javier; Dorado, Julián

انتشارات (Publisher):

Bentham Science 2015

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

muneanu-cr-aguiar-pulido-v-freire-a-et-al-graph-based-processing-of-macromolecular-information-curr-bioinform-2015115606-631

موضوع (Subject):

Markov descriptors       Molecular information       QSAR       View all subjects      

توضیحات خلاصه (Summary):

[Abstract] The complex information encoded into the element connectivity of a system gives rise to the possibility of graphical processing of divisible systems by using the Graph theory. An application in this sense is the quantitative characterization of molecule topologies of drugs, proteins and nucleic acids, in order to build mathematical models as Quantitative Structure – Activity Relationships between the molecules and a specific biological activity. These types of models can predict new drugs, molecular targets and molecular properties of new molecular structures with an important impact on the Drug Discovery, Medicinal Chemistry, Molecular Diagnosis, and Treatment. The current review is focused on the mathematical methods to encode the connectivity information in three types of graphs such as star graphs, spiral graphs and contact networks and three in-house scientific applications dedicated to the calculation of molecular graph topological indices such as S2SNet, CULSPIN and MInD-Prot. In addition, some examples are presented, such as results of this methodology on drugs, proteins and nucleic acids, including the Web implementation of the best molecular prediction models based on graphs.  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Munteanu, Cristian-Robert; Aguiar-Pulido, Vanessa; Freire, Ana; Martínez-Romero, Marcos; Porto-Pazos, Ana B.; Pereira-Loureiro, Javier; Dorado, Julián

شناسه OCLC:979265356

Language Note:English

فهرست محتوا:2212-392X 1574-8936 http://hdl.handle.net/2183/17768

Changes in hypothalamic expression of the Lin28/let-7 system and related MicroRNAs during postnatal maturation and after experimental manipulations of puberty / دانلود فایل

مشخصات کلی Changes in hypothalamic expression of the Lin28/let-7 system and related MicroRNAs during postnatal maturation and after experimental manipulations of puberty

نویسنده کتاب (Author):

Sangiao-Alvarellos, Susana; Manfredi-Lozano, María; Ruiz-Pino, Francisco; Navarro, V.M.; Sánchez-Garrido, M.A.; León, Silvia; Diéguez, Carlos; Cordido Carballido, Fernando; Matagne, V.; Dissen, G.A.; Ojeda, S.R.; Pinilla, Leonor; Tena-Sempere, Manuel

انتشارات (Publisher):

Endocrine Society 2013

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

sangiao-alvarellos-s-manfredi-lozano-m-ruiz-pino-f-et-al-changes-in-hypothalamic-expression-of-the-lin28let-7-system-and-related-micrornas-during-postnatal-maturation-and-after-experimental-manip

توضیحات خلاصه (Summary):

[Abstract] Lin28 and Lin28b are related RNA-binding proteins that inhibit the maturation of miRNAs of the let-7 family and participate in the control of cellular stemness and early embryonic development. Considerable interest has arisen recently concerning other physiological roles of the Lin28/let-7 axis, including its potential involvement in the control of puberty, as suggested by genome-wide association studies and functional genomics. We report herein the expression profiles of Lin28 and let-7 members in the rat hypothalamus during postnatal maturation and in selected models of altered puberty. The expression patterns of c-Myc (upstream positive regulator of Lin28), mir-145 (negative regulator of c-Myc), and mir-132 and mir-9 (putative miRNA repressors of Lin28, predicted by bioinformatic algorithms) were also explored. In male and female rats, Lin28, Lin28b, and c-Myc mRNAs displayed very high hypothalamic expression during the neonatal period, markedly decreased during the infantile-to-juvenile transition and reached minimal levels before/around puberty. A similar puberty-related decline was observed for Lin28b in monkey hypothalamus but not in the rat cortex, suggesting species conservation and tissue specificity. Conversely, let-7a, let-7b, mir-132, and mir-145, but not mir-9, showed opposite expression profiles. Perturbation of brain sex differentiation and puberty, by neonatal treatment with estrogen or androgen, altered the expression ratios of Lin28/let-7 at the time of puberty. Changes in the c-Myc/Lin28b/let-7 pathway were also detected in models of delayed puberty linked to early photoperiod manipulation and, to a lesser extent, postnatal underfeeding or chronic subnutrition. Altogether, our data are the first to document dramatic changes in the expression of the Lin28/let-7 axis in the rat hypothalamus during the postnatal maturation and after different manipulations that disturb puberty, thus suggesting the potential involvement of developmental ch  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Sangiao-Alvarellos, Susana; Manfredi-Lozano, María; Ruiz-Pino, Francisco; Navarro, V.M.; Sánchez-Garrido, M.A.; León, Silvia; Diéguez, Carlos; Cordido Carballido, Fernando; Matagne, V.; Dissen, G.A.; Ojeda, S.R.; Pinilla, Leonor; Tena-Sempere, Manuel

شناسه OCLC:979265348

Language Note:English

فهرست محتوا:0013-722 1945-7170 http://hdl.handle.net/2183/17559

Rutting prediction of a granular material for base layers of low-traffic roads / دانلود فایل

مشخصات کلی Rutting prediction of a granular material for base layers of low-traffic roads

نویسنده کتاب (Author):

Pérez Pérez, Ignacio; Gallego Medina, Juan

انتشارات (Publisher):

Elsevier 2010

ویرایش و نوع فایل (Edition/Format):

 Downloadable article : English

منبع (Database):

WorldCat

عنوان ژورنال (Publication):

perez-perez-i-gallego-medina-j-2010-rutting-prediction-of-a-granular-material-for-base-layers-of-low-traffic-roads-construction-and-building-materials-24-3-pp-340-345-issn-095

موضوع (Subject):

Granular material       Permanent deformation       Models       View all subjects      

توضیحات خلاصه (Summary):

[Abstract:] This paper analyses the permanent deformation performance of an unbound granular material for base layers of low-traffic roads. The material has been subjected to repeated triaxial loads. The shakedown theory was used to classify the structural response of the unbound granular material to the applications of load cycles. Three models were fitted to express the cumulative permanent strain as a function of the number of load cycles. In general, the predictions of two models previously studied by other researchers proved to be good but in the long-term, they tended to underestimate the measured values. In contrast, a third new model – the sum of two well known models – offered excellent predictions, which in the long-term did not tend to either underestimate or overestimate the measured values.  Read more…

ژانر / فرم:info:eu-repo/semantics/article

موضوع:Internet resource

نوع منبع:Internet Resource, Article

تمام نویسندگان / همکاران: Pérez Pérez, Ignacio; Gallego Medina, Juan

شناسه OCLC:979265346

Language Note:English

فهرست محتوا:http://hdl.handle.net/2183/17966 http://dx.doi.org/10.1016/j.conbuildmat.2009.08.028