Miracle-dz/UniFAR-FTUs huggingface dataset:
Reconstruction d'un modèle géométrique à partir d'un maillage 3D issu d'un scanner surfacique. (Reconstruction of a geometric model based on a 3D mesh from a surface scanner)

La retro-ingenierie consiste a reconstruire un modele parametrique a partir d'un nuage de points ou d'un maillage 3D representant un objet, afin d'en determiner le processus de conception ou de fabrication. Ce modele correspond a une combinaison de primitives geometriques (cylindres, plans, spheres.) dont on cherche a estimer les parametres a partir des donnees 3D. La retro-ingenierie est tres utilisee dans l'industrie de pieces manufacturees pour l'analyse metrologique, le controle non destructif ou la comprehension d'un procede de fabrication.Cette these, menee en collaboration avec la societe C4W, s'interesse a l'extraction de primitives geometriques a partir d'un maillage 3D issu de la numerisation d'un objet manufacture. La particularite de ces maillages est qu'ils contiennent de nombreuses imprecisions par rapport au plan CAO initial, engendrees a la fois par la fabrication de l'objet et par sa numerisation.Nous nous sommes d'abord interesses a l'amelioration des techniques existantes afin d'extraire des primitives robustes aux imprecisions des donnees. Nous avons en particulier explore plusieurs approches telles que la segmentation prealable du maillage, la caracterisation de la forme a l'aide des courbures et l'approximation d'une primitive par regression ou optimisation sur les points du maillage.Le second axe de cette these consiste a embellir le modele parametrique reconstruit, c'est-a-dire a regulariser les parametres des primitives afin qu'elles respectent des relations geometriques telles que le parallelisme ou la concentricite. Nous nous sommes donc interesses a differents aspects de la conception CAO induisant ces relations. Ainsi, nous cherchons a detecter automatiquement des elements de references (repere, plans ou droites d'appuis) ayant permis de modeliser la piece originale. Ces derniers servent alors de references absolues pour un embellissement global des primitives.Le troisieme axe de recherche concerne la reconnaissance de motifs particuliers a partir de l'ensemble des primitives. Nous nous sommes ainsi interesses aux entites d'usinage et aux repetitions de geometrie, frequemment construites lors de la conception d'une piece manufacturee. Cette seconde analyse de l'objet, plus fonctionnelle, permet de deduire de nouvelles informations liees a la fabrication d'une piece.
Collusion by Algorithm: Does Better Demand Prediction Facilitate Coordination Between Sellers?

We build a game-theoretic model to examine how better demand forecasting resulting from algorithms, machine learning, and artificial intelligence affects the sustainability of collusion in an industry. We find that, although better forecasting allows colluding firms to better tailor prices to demand conditions, it also increases each firm’s temptation to deviate to a lower price in time periods of high predicted demand. Overall, our research suggests that, despite concerns expressed by policy makers, better forecasting and algorithms can lead to lower prices and higher consumer surplus.
Clinical Imaging Findings of Vestibular Aqueduct Trauma in a Patient With Posttraumatic Meniere's Syndrome

Posttraumatic Meniere's syndrome is a rare clinical entity. The pathomechanism by which temporal bone trauma leads to fluctuating audiovestibular symptoms, in some cases with a delay of onset many years after trauma, remains elusive. Here, a clinical case and the respective temporal bone imaging data were reviewed to investigate the underlying inner ear pathology. A 44-year-old patient presented with left-sided Meniere's syndrome 34 years after he suffered an ipsilateral temporal bone fracture caused by a car accident. Clinical imaging showed left cochleovestibular hydrops (gadolinium-enhanced MRI) and bony obliteration of the left VA (CT imaging), resulting in discontinuity of the ES. Our findings suggest that a temporal bone fracture with a “retrolabyrinthine” course, traversing the VA, caused intraaqueductal callus bone formation and progressive blockage of the VA. As a result, the extraosseous (distal) endolymphatic sac (eES) became separated from the cochleovestibular labyrinth, an event that presumably underlies endolymphatic hydrops formation and that precipitates the onset of clinical Meniere's symptoms in this case.
Graveco de proteinadsorbado al surfacoj

Proteinoj estas gravaj eroj de la vivantaj organizoj. Ili estas ĉiuj konstruitaj de L-amino acidoj, tamen iliaj funkcioj tre varias en la organizoj. Ili estas relative stabilaj, sed povas malstabiliĝi kaj sekve denaturiĝi pro diversaj cirkonstancoj. El tiuj cirkonstancoj pluraj faktoroj estas jam bone konataj, tamen la efiko de surfaco estas daŭre multe esplorata. Proteinoj ofte adsorbiĝas al surfacoj, kaŭzante plurajn problemojn, aŭ male, solvojn. Tial bona kontrolo de proteinadsorbado al surfacoj estas ege bezonata.
Knowledge-based Software Representation, Querying and Visualization

Among various data types that can be visualized, recently software became one of the most important candidate for visualization. With the increasing complexity of developed software systems the need for better means to understand software are needed. Software visualization aims to help with these problems by providing graphical presentations and thus allows discussion between developers in the domain of these graphical representations rather than mental concepts. In this work we presents an alternative software visualization method based on hypergraphs. We have developed a visualization system that utilize hypergraph-based representation of software artifacts and relations between them. We present how hypergraphs can be used in all stages of the visualization process and how they are used as the unifying data representation. Interactive 3D visualization displays directly these hypergraph representations of software. To allow ltering we have developed a query mechanism in which queries are hypergraph patterns and results are also hypergraphs. This way the visualization system is build around only one data structure.
Regional depth-controlled hydrothermal metamorphism in the Zymoetz River area, British Columbia

An estimated 6 km of basic to silicic volcanic flows and clastic rocks of the Early Jurassic Telkwa Formation is exposed in moderately east-dipping fault blocks along the Zymoetz River, British Columbia. Extensive wholesale zeolitic replacement of porous tuff beds suggests widespread hydrothermal activity. Metamorphic grade increases regionally from laumontite–albite facies to prehnite–pumpellyite facies with increasing stratigraphic depth. Telkwa Formation strata and the imparted metamorphic zonation are cut and tilted by rotational block faulting, and are repeated in each of the upturned blocks. Late Mesozoic to Tertiary plutonism locally thermally overprinted the regional facies, particularly in the western part of the area. Fluid-inclusion isochores, combined with calculated mineral equilibria, suggest that metamorphism took place at fluid pressures of 2 kbar (1 kbar = 100 MPa) or less, consistent with estimates of stratigraphic burial. Metamorphic fluids were H2O rich and low in dissolved salts. Maxi.
Six Degrees of Separation: A Play

The following sections of this BookRags Premium Study Guide is offprint from Gale's For Students Series: Presenting Analysis, Context, and Criticism on Commonly Studied Works: Introduction, Author Biography, Plot Summary, Characters, Themes, Style, Historical Context, Critical Overview, Criticism and Critical Essays, Media Adaptations, Topics for Further Study, Compare & Contrast, What Do I Read Next? , For Further Study, and Sources.
Service System with Dependent Service and Patience Times

Motivated by recent empirical evidence, we consider a large service system in which the patience time of each customer depends on his service requirement. Our goal is to study the impact of such dependence on key performance measures, such as expected waiting times and average queue length, as well as on optimal capacity decisions. Since the dependence structure renders exact analysis intractable, we employ a stationary fluid approximation that is based on the entire joint distribution of the service and patience times. Our results show that even moderate dependence has significant impacts on system performance, so considering the patience and service times to be independent when they are in fact dependent is futile. We further demonstrate that Pearson’s correlation coefficient, which is commonly used to measure and rank dependence, is an insufficient statistic, and that the entire joint distribution is required for comparative statics. Thus, we propose a novel framework, incorporating the fluid model wit.
Vertebrate Diversity of Alabata Nature Reserve, Abeokuta, South West Nigeria

The importance of wildlife, especially the vertebrates for game, tourism and medicinal use cannot be over emphasized. Nature reserves are also known to influence the ecosystem of locations. However, rapid increase in land use for agriculture and other physical developments are gradually reducing wildlife habitation including the Alabata area nature reserve of Abeokuta. Inventory of these resources in relation to their habitat parameters would inform their better management. Assessments of vertebrate and associated flora diversities were therefore carried out in Alabata Nature Reserve. The study covered 20 km 2 out of 97.3 km 2 area of Alabata Nature Reserve. Twenty sample plots each of 25 m×25 m were laid randomly. Animals (vertebrates) were assessed for 24 months in each plot cutting across wet and dry seasons. Animals were surveyed weekly using the King Census and Line Transect methods, by direct and indirect modes. 121 vertebrate species, belonging to 56 families were recorded. Thryonomys swinderianus was the most abundant vertebrate species with a mean frequency of 319±40.87, while Ploceus capensis 5±3.92 was the least abundant. Keywords Wild vertebrate diversity; Alabata nature reserve; Sustainable use; Wildlife habitat
Association Between the Success of an Invasive Macrophyte, Environmental Variables and Abundance of a Competing Native Macrophyte

The success of invasive species depends on the overcoming of abiotic and biotic filters. Abiotic variables likely have greater relative importance over invasion at broad spatial scales, while biotic interactions are more important at fine spatial scales. In this study, we tested the hypotheses that (i) the abundance of the invasive Hydrilla verticillata is more correlated with abiotic factors than with competing native species at broad spatial grain; and that (ii) H. verticillata abundance is more correlated with competing native species than with abiotic factors at fine spatial grain. Here, we considered spatial scale as the grain size (i.e., the extent of sampling unit) assuming broad spatial scales as a large area encompassing the entire patches of macrophytes, and fine spatial scales as a small area inside one macrophyte patch. We collected the abundance of hydrilla and the competing native species along with environmental variables in a large subtropical reservoir. To evaluate how the relative importance of the abiotic factors and the competing native species vary between spatial grains we used Bayesian Generalized Linear Models. At broad grain, the abundance of the competing native species, maximum fetch (positive correlation), turbidity and conductivity (negative correlation) were the most important factors to explain the hydrilla abundance. At fine grain, alkalinity, total organic matter of the sediment and the abundance of a competitive native species (all negative correlations) were the most important variables. Our results indicate a greater importance of abiotic factors at broader grains while competitive interactions seem to be important only in the finer spatial grains. Environmental heterogeneity may explain the positive correlation between native and invasive abundances at broad grain, while the negative correlation at fine grain suggests the effect of competition. In synthesis, we show that the abiotic factors that explain the invasion success of a submerged invasive macrophyte are the same in two spatial grains, but the importance of biotic interactions changed with grain. Thus, our data suggest that models that attempt to explain the success of invasive plants, should consider spatial scales.
Assessment of Technological Path of Hydrogen Energy Industry Development: A Review

Hydrogen energy has the advantages of low carbon and cleanliness, high energy density, and high conversion efficiency; it is expected to play a pivotal role in Eastern Asia and the MENA region’s energy transition. The research status and development prospects of various technologies in hydrogen production, hydrogen storage, and hydrogen use are analyzed. On this basis, specific technical paths for developing renewable energy and integrated energy service parks coupled with hydrogen energy are proposed. Solid polymer electrolyte (SPE) electrolysis hydrogen production and solid material hydrogen storage are the most potential development in directions of hydrogen production and hydrogen storage. Technologies such as hydrogen fuel cell and natural gas hydrogen mixture in the hydrogen use link should be simultaneously promoted. The organic combination of wind/light-abandoned hydrogen production by electrolysis of water, wind power/photovoltaic off-grid hydrogen production with fuel cell power generation, hydrogen refueling station supply, methanol production, and natural gas hydrogen mixing technology would effectively solve the uneconomical and transportation difficulties of renewable energy hydrogen production. At the same time, hydrogen energy can realize the interconnection of multiple energy networks, and its application prospects in the future integrated energy service parks are very broad.
ThymopoiesisMitogenic Stimuli, But Not to Abnormal Increased Cell Apoptosis in Response to Proliferation and Cytokine Production and to Cells Leads to a Dramatic Decrease in Cell B in T-Lineage k In Vivo Inhibition of NF-KörnerHubert,

To understand the role of NF- k B complexes in T cell development and activation, we have generated transgenic mice in which RelA and c-Rel complexes were selectively inhibited in the T-lineage cells by speciﬁc expression of a trans -dominant form of I k B a . Transgene expression did not affect the thymic development, but led to lowered numbers of splenic T cells and to a dramatic decrease in the ex vivo proliferative response of splenic T lymphocytes. Analysis of IL-2 and IL-2R a expression demonstrated that the perturbation of the proliferation response was not attributable to an abnormal expression of these genes. In contrast, expression of IL-4, IL-10, and IFN- g was strongly inhibited in the transgenic T cells. The proliferative deﬁciency of the transgenic T cells was associated with an increased apoptosis. These results point out the involvement of NF- k B/Rel family proteins in growth signaling pathways by either regulating proteins involved in the IL-2 signaling or by functionally interfering with the cell cycle progression. The Journal of Immunology, 1999, 162: 6442–6450. k B a followed by Western blotting using an mAb speciﬁc for the amino-terminal region of I k B a revealed that both 58- and 45-kDa forms are composed of I k B a (not shown). These results suggest that the tagged mutated I k B a cDNA was expressed as a protein presenting two conformations. The preferential conformation in denaturing conditions had a m.w. of 58,000, but a minor form of 45,000 was also detected.
Metasomatic replacement of inherited metamorphic monazite in a biotite-garnet granite from the Nízke Tatry Mountains, Western Carpathians, Slovakia: Chemical dating and evidence for disequilibrium melting

Abstract Granitoid monazite is a potential candidate for restitic origin because of its very low dissolution rates. A biotite-garnet granite (Nízke Tatry Mountains, Slovakia) contains monazite characterized by older, BSE-bright domains irregularly replaced by BSE-dark domains. They are interpreted as the result of late-magmatic replacement by a dissolution-reprecipitation mechanism. Garnet is mostly magmatic, with peritectic cores, and the granite is thought to have formed by biotite fluid-absent melting. Xenotime-monazite and garnet-biotite thermometry yield 600-650 °C at 400 MPa, for Yrich monazite, suggesting that equilibration took place in the presence of fluid. Chemical and textural relations enable the distinction of four types of monazite, which have been dated. Type I monazite, forming grain interiors, is Th-rich and overgrown by a lower-Th type II variety. Type III monazite has the lowest U and also overgrows the type I, whereas type IV monazite has the highest U (and Y) contents. U/Pb-Th/Pb isochrons reveal that, whereas monazite types I and III are older (355 ± 7 Ma), the age corresponding to the Variscan metamorphic peak, types II and IV are ca. 10 million years younger (346 ± 3 Ma, type IV). Monazite types I-III are considered to be inherited from a metamorphic protolith, whereas type IV is interpreted to be the age of the latest magmatism. Application of LREE and Zr diffusion coefficients to monazite and zircon indicates that the accessory restite assemblage observed is consistent with a short magma residence time (<500 years) during which monazite remained mostly intact, whereas zircon was partly dissolved.
Functional analysis of a β-1,3-glucanase gene (Tag 1) with anther-specific RNA and protein accumulation using antisense RNA inhibition

Summary A critical stage in pollen development is the dissolution of tetrads into free microspores. Tetrads are surrounded by a wall composed primarily of β-1,3-glucan. At the completion of meiosis, tetrads are released into the anther locule after hydrolysis of the callose by a β-1,3-glucanase complex. The cDNA corresponding to a β-1,3-glucanase cloned from tobacco ( Tag 1 ) represents a gene that is highly similar to other β-1,3-glucanases and is expressed exclusively in anthers from the tetrad to free microspore stage of pollen development. Tag 1 protein was overexpressed in E. coli , accumulating in insoluble inclusion bodies. Polyclonal antibodies against Tag 1 recombinant protein identify a single 33 kD protein accumulating only in anthers at tetrad and free microspore stages where β-1,3-glucanase activity is present. Transgenic plants expressing Tag 1 antisense RNA were produced. Although Tag 1 RNA and protein levels were greatly reduced, tetrad dissolution and pollen development were normal. These data indicate that under the conditions these tobacco plants were grown, wild type levels of Tag 1 protein are not necessary for male fertility.
A Emergência de Centros de Excelência (COEs) e a Transferência de Conhecimento a partir das Subsidiárias da Pirelli e da Peugeot Citroën do Brasil

Este artigo verifica a emergência dos centros de excelência (COEs) e a transferência de conhecimento a partir das subsidiárias estrangeiras da Pirelli e da Peugeot Citroën no Brasil. Através de entrevistas estruturadas com especialistas da indústria automobilística, os resultados permitem concluir que a formação dos COEs é moldada pela própria necessidade de adaptação dos produtos ao mercado local, bem como em função da autonomia adquirida por estas subsidiárias e pela importância e desenvolvimento do mercado brasileiro de automóveis em escala global. Além destes aspectos, os COEs e a transferência de conhecimento ocorrem em função do tempo em que a subsdidiária está instalada no país hospedeiro, assim como sua relevância para os negócios da empresa e relação com a matriz.
Three-Dimensional Topographic Correction Methods for Magnetotelluric Data

Topographic effects due to irregular terrain may prevent accurate interpretation of magnetotelluric (MT) data. Three-dimensional (3D) topographic effects are investigated for a trapezoidal hill model using an edge finite-element method to show that the 3D topographic effects have both galvanic and inductive effects in any polarization. For reducing these topographic effects from MT data, two different correction algorithms are applied to the impedance tensor and to both electric and magnetic fields, respectively. Numerical experiments indicate that although significant anomalies are generated by 3D topographic features, the correction procedures are effective to decrease distortions caused by surface topography and to improve the quality of subsurface interpretation.
Hydrocarbon Generation as a Mechanism for Overpressuring in Rocky Mountain Region

Overpressured reservoirs are present in the deeper parts of most basins in the Rocky Mountain region. A variety of conditions can cause overpressuring. However, most high pressures in the region are caused by present-day or recently active oil and gas generation or generation in the last few million years in low-permeability rock successions that still contain organic matter capable of yielding thermally generated hydrocarbons. Rocks with above-normal pressure range from Devonian to Tertiary, and commonly are associated with low-permeability (tight) reservoirs. Most of the overpressuring occurs in Cretaceous and Tertiary rocks. Overpressuring in rocks older than Cretaceous is rare and where present only occurs in strata with very rich hydrocarbon source beds such as the D vonian-Mississippian Bakken Formation. Most organically lean pre-Cretaceous source beds are no longer capable of yielding enough hydrocarbons to maintain abnormal pressure. Nearly all overpressured reservoirs and source rocks have temperatures of approximately 200°F (93°C) or higher. In addition, available data indicate that hydrocarbon-related overpressuring does not generally occur if vitrinite reflectance (Ro) values are less than 0.6% in oil-prone strata or less than 0.7% in gas-prone strata. Overpressured gas-bearing strata generally have Ro values of 0.8% or higher. Maximum reservoir pressures are about equal to the fracture gradient pressure in the reservoir rocks. Some vertical fractures in reservoir rocks are probably caused by rapid expulsion of hydrocarbons from the source beds. High pressures in the Rocky Mountain region means that the rock succession is gas or oil saturated, and discrete hydrocarbon-water contacts are generally not present. Classical concepts of hydrodynamics do not appear to be applicable to these overpressured successions. The optimum depths for exploration are generally the upper 1,000-2,000 ft (305-610 m) of the overpressured succession.
The Cretaceous Igneous Province of Madagascar: Geochemistry and Petrogenesis of Lavas and Dykes from the Central-Western Sector

, 1999). Similarly, the & Buchan, 1997), crops out in the area between thecontributions of hotspot (usually taken to be plume) Mailaka limestones and the contact between the Permo-mantle and non-hotspot asthenosphere to ﬂood basalt Triassic sedimentary rocks of the Morondava basin andmagmas appear to vary greatly from province to province the Precambrian basement (Fig. 1b). The dykes reach(e.g. Kent