gebhart/patrepeval huggingface dataset:
A novel approach to lane detection and tracking (2009)

In this paper, a new robust approach for camera based lane recognition is presented. The tracking filter and the detection interact such that the tracking filter is used to place a region of interest for a detection of lane segments in various distances, and each successful detection is used to update the lane geometry in the tracking filter. A novel and time efficient detection algorithm is used to detect the position and the slope of the lane segments. To be able to cope with sudden changes in the curvature, two interacting extended Kalman filters are used to select the bandwidth for the filter. To our best knowledge this algorithm has not been applied to vision based lane tracking before. First results indicate that our approach is robust and real time capable with an average execution time of below 3 ms on a 3 Ghz standard PC.
Density Optimization of Underhood Sound Absorber Applications (2011)

&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;Using advanced, multi-layer poro-elastic acoustical material modeling technologies, an example of acoustical performance optimization of an underhood sound absorber application is presented. In this case, a porous facing in combination with a fibrous sound absorber pad is optimized for maximum efficiency, which allows for dramatic reduction in pad density and weight. Overall sound absorption performance is shown to be equal or improved versus frequency relative to the incumbent design.&lt;/div&gt;&lt;/div&gt;
Periodontal regeneration following application of basic fibroblast growth factor-2 in combination with beta tricalcium phosphate in class III furcation defects in dogs (2013)

The aim of this study was to investigate the effect of tunnel structured β-tricalcium phosphate (β-TCP) on the regenerative potential of basic fibroblast growth factor-2 (bFGF-2) in class III furcation defects in dogs. The furcations of 30 mandibular premolar teeth received: 1) 0.3% bFGF-2 solution in conjunction with β-TCP; 2) 0.3% bFGF-2 solution; and 3) no implant material (Control group). The dogs were sacrificed 8 weeks post-surgery, and healing was evaluated histologically. New bone formation was significantly greater in the bFGF-2/β-TCP group compared to the bFGF-2 solution and Control groups (p<0.01). New cementum formation in the bFGF-2/β-TCP and bFGF-2 solution groups was significantly greater than that in the Control group (p<0.01). These findings suggested that bFGF-2 alone enhances connective tissue attachment in a manner similar to the combination of bFGF-2 and β-TCP. Furthermore, this combination enhances bone formation up to the fornix in class III furcation defects.
A personalization framework for OLAP queries (2005)

OLAP users heavily rely on visualization of query answers for their interactive analysis of massive amounts of data. Very often, these answers cannot be visualized entirely and the user has to navigate through them to find relevant facts.In this paper, we propose a framework for personalizing OLAP queries. In this framework, the user is asked to give his (her) preferences and a visualization constraint, that can be for instance the limitations imposed by the device used to display the answer to a query. Given this, for each query, our method computes the part of the answer that respects both the user preferences and the visualization constraint. In addition, a personalized structure for the visualization is proposed.
Information, complexity, brains and reality (Kolmogorov Manifesto) (2007)

I discuss several aspects of information theory and its relationship to physics and neuroscience. The unifying thread of this somewhat chaotic essay is the concept of Kolmogorov or algorithmic complexity (Kolmogorov Complexity, for short). I argue that it is natural to interpret cognition as the art of finding algorithms that apprach the Solomonoff-Kolmogorov-Chaitin (algorithmic) Complexity limit with appropriate tradeoffs. In addition, I claim that what we call the universe is an interpreted abstraction--a mental construct--based on the observed coherence between multiple sensory input streams and our own interactions. Hence, the notion of Universe is itself a model.
Integrated Chemical Systems: n-Silicon/Silicide/Catalyst Systems (1983)

The paper by Wrighton describes semiconductor systems which incorporate other components, such as polymer layers, to produce useful electrode structures. The development of such multicomponent, multiphase systems, which we call "integrated chemical systems" by analogy to the integrated circuits used in semiconductor devices, clearly represents an important new trend in chemistry. The design of useful semiconductor electrodes and powders will require surface modification to passivate surface states to improve efficiency, to protect the surface from photodecomposition, to catalyze desired reactions and to provide sensitizers. For example the system p-GaAs/viologen polymer/Pt can be used for the photodriven evolution of hydrogen. The development of such systems will probably require the application of techniques very different from those normally used in chemical synthesis, e.g., molecular beam epitaxy, sputtering, ion implantation, spin coating, and other methods borrowed from solid state physics and semiconductor technology. These integrated chemical systems will have properties different and, we
Expression, purification and crystallization of the Atg5–Atg16 complex essential for autophagy (2006)

Atg5 is a novel 34 kDa protein that is covalently modified by Atg12, a ubiquitin-like modifier, and forms a complex with Atg16. The Atg12-Atg5-Atg16 complex localizes to autophagosome precursors and plays an essential role in autophagosome formation. Saccharomyces cerevisiae Atg5 in complex with the N-terminal regions of Atg16 was expressed, purified and crystallized in four crystal forms. Forms I, II and III belong to space group P2(1), with unit-cell parameters a = 66.3, b = 104.4, c = 112.1 A, beta = 92.1 degrees (form I), a = 79.5, b = 101.4, c = 95.1 A, beta = 98.6 degrees (form II) or a = 56.9, b = 101.2, c = 66.5 A, beta = 100.6 degrees (form III). Form IV belongs to space group P4(2)2(1)2, with unit-cell parameters a = 73.3, c = 148.1 A. Diffraction data were collected from all crystal forms and high-resolution data to beyond 2.0 A resolution were obtained from a form IV crystal.
Speech-Based Interactive Information Guidance System using Question-Answering Technique (2007)

This paper addresses an interactive framework for information navigation based on document knowledge base. In conventional audio guidance systems, such as those deployed in museums, the information flow is one-way and the content is fixed. In order to make an interactive guidance system, we propose the application of question-answering (QA) techniques. Since users tend to use anaphoric expressions in successive questions, we investigate appropriate handling of contextual information based on topic detection, together with the effect of using N-best information in ASR output. Moreover, we apply the QA technique to generation of system-initiative information recommendation. A navigation system on Kyoto city information was implemented. Effectiveness of the proposed techniques was confirmed through a field trial by a number of real novice users.
A randomised controlled study of the effect of long chain polyunsaturated fatty acid supplementation on stool hardness during formula feeding (1999)

The prevalence of hard stools is significantly reduced in infants fed a formula that is supplemented with LCPUFAs.
On the Impact of Kernel Approximation on Learning Accuracy (2010)

Kernel approximation is commonly used to scale kernel-based algorithms to applications containing as many as several million instances. This paper analyzes the effect of such approximations in the kernel matrix on the hypothesis generated by several widely used learning algorithms. We give stability bounds based on the norm of the kernel approximation for these algorithms, including SVMs, KRR, and graph Laplacian-based regularization algorithms. These bounds help determine the degree of approximation that can be tolerated in the estimation of the kernel matrix. Our analysis is general and applies to arbitrary approximations of the kernel matrix. However, we also give a specific analysis of the Nyström low-rank approximation in this context and report the results of experiments evaluating the quality of the Nyström low-rank kernel approximation when used with ridge regression. 1
Biochemical characterisation of human transglutaminase 4 (2021)

Abstract Transglutaminases are protein modifying enzymes involved in physiological and pathological processes with potent therapeutic possibilities. Human TG4, also called prostate transglutaminase, is frequently associated with pathological symptoms and particularly with cancer invasiveness. Although rodent TG4 is well characterised, bio-chemical characteristics of human TG4 that could help the understanding of its way of action are not published. First, we analysed proteomics databases and found that TG4 protein is present in human tissues beyond the prostate. Then, we studied in vitro the transamidase activity of human TG4 and its regulation using the microtiter plate method. Human TG4 has low transamidase activity which prefers slightly acidic pH and a reducing environment. It is enhanced by submicellar concentrations of SDS suggesting that membrane proximity is an important regulatory event. Human TG4 does not bind GTP as tested by GTP-agarose and BODIPY-FL-GTPγS binding, and its proteolytic activation by dispase or when expressed in AD-293 cells was not observed either. We identified several potential human TG4 glutamine donor substrates in the AD-293 cell extract by biotin-pentylamine incorporation and mass spectrometry. Several of these potential substrates are involved in cell-cell interaction, adhesion and proliferation, suggesting that human TG4 could become an anticancer therapeutic target.
Corrélation d'Images Numériques Intégrée pour l'identification de \n propriétés mécaniques (2009)

Il est proposé de coupler la Corrélation&#13;\n d’Images Numériques (DIC) et l’identification par recalage (FEMU). Le calcul par&#13;\n éléments finis fourni une base (de petite dimension) de champs qui sert à l'analyse&#13;\n DIC, qui à son tour permet d'ajuster cette base. Le couplage mis en place permet de&#13;\n minimiser la perte d’informations, en particulier pour de faibles rapports signal/bruit.&#13;\n L’exemple d’un essai biaxial réalisé sur un matériau composite illustre les performances&#13;\n de la méthode.
Electrical properties of metal contacts on laser-irradiated n-type GaN (2003)

The electrical properties of metal contacts on laser-irradiated n-type GaN were investigated using synchrotron radiation photoemission spectroscopy. A KrF excimer laser pulse of 600 mJ/cm2 onto GaN led to a decrease in the Ni Schottky barrier height from 0.91 to 0.47 eV, resulting in the formation of a nonalloyed Ohmic contact with a specific contact resistivity of 1.7×10−6 Ω cm2. Metallic Ga decomposed from GaN by laser irradiation was transformed into GaOx, playing a role in promoting outdiffusion of N atoms. A large number of N vacancies were produced, forming a degenerated GaN layer near the surface, resulting in the good Ohmic contact.
Dielectric Properties of the Lamellar Niobates and Titanoniobates AM2Nb3O10 and ATiNbO5 (A = H, K, M = Ca, Pb), and Their Condensation Products Ca4Nb6O19 and Ti2Nb2O9 (1999)

The dielectric properties of layer perovskites in the Dion−Jacobson (KCa2Nb3O10, HCa2Nb3O10, CsPb2Nb3O10, HPb2Nb3O10, KCa2NaNb4O13, KLa2NbTi2O10) and Ruddlesden−Poppper (K2La2Ti3O10) series, and of related lamellar oxides (KTiNbO5, HTiNbO5) were measured. Most of these compounds show significant dielectric dispersion and high loss, which are attributed to both grain and grain boundary atomic displacements. The dielectric constant of HPb2Nb3O10, however, is ∼150 between 1 kHz and 10 MHz, and its dielectric loss is <0.1 over the same range. Topochemical dehydration of HTiNbO5 to Ti2Nb2O9 eliminates the loss components associated with intra- and intergrain proton movement. HCa2Nb3O10 undergoes a similar topochemical dehydration reaction to make a new metastable phase, Ca4Nb6O19, for which a structural model is proposed. Above 550 °C, Ca4Nb6O19 decomposes to a mixture of microcrystalline CaNb2O6 and Ca2Nb2O7. Unlike HCa2Nb3O10, HPb2Nb3O10 does not dehydrate topochemically, but transforms directly to a mixture of Pb3Nb4O13 and PbNb2O6.
Nurselike cells express BAFF and APRIL, which can promote survival of chronic lymphocytic leukemia cells via a paracrine pathway distinct from that of SDF-1α (2005)

We examined expression of B cell-activating factor of the tumor necrosis factor (TNF) family (BAFF) and a proliferation-inducing ligand (APRIL) on chronic lymphocytic leukemia (CLL) B cells and nurselike cells (NLCs), which differentiate from CD14+ cells when cultured with CLL B cells. NLCs expressed significantly higher levels of APRIL than monocytes and significantly higher levels of BAFF and APRIL than CLL B cells. Also, the viability of CLL B cells cultured with NLCs was significantly reduced when CLL B cells were cultured with decoy receptor of B-cell maturation antigen (BCMA), which can bind both BAFF and APRIL, but not with BAFF receptor:Fc (BAFF-R:Fc), which binds only to BAFF. The effect(s) of BAFF or APRIL on leukemia cell survival appeared additive and distinct from that of stromal cell-derived factor-1alpha (SDF-1alpha), which in contrast to BAFF or APRIL induced leukemia cell phosphorylation of p44/42 mitogen-activated protein kinase (extracellular signal-regulated kinase-1/2 [ERK1/2]) and AKT. Conversely, BAFF and APRIL, but not SDF-1alpha, induced CLL-cell activation of the nuclear factor-kappaB1 (NF-kappaB1) and enhanced CLL-cell expression of the antiapoptotic protein Mcl-1. However, BAFF, but not APRIL, also induced CLL-cell activation of NF-kappaB2. We conclude that BAFF and APRIL from NLCs can function in a paracrine manner to support leukemia cell survival via mechanisms that are distinct from those of SDF-1alpha, indicating that NLCs use multiple distinct pathways to support CLL-cell survival.
Statistical limitations of the effective density based on the K-distribution ~echography\ (2002)

In echography, the radiofrequency signal envelope which comes from non-periodic media with low density or clustered scatterers shows deviations from Rayleigh statistics, It has been shown recently that the K-distribution is then a good model. This model contains a parameter, /spl alpha/, from which an estimation of the effective density of scatterers in media can be made. In this work, some statistical properties of this estimator, i.e. its bias and variance versus the sample size, are studied. The bias and variance have been analytically calculated and compared with numerical simulation for media with scatterers densities ranging in a 1 to 20 ratio. The effects induced by attenuation and noise are also discussed. These results give the limits of the experimental conditions for which the bias and variance of /spl alpha/ estimation are acceptable. The effective density of 3 types of foams has been estimated and compared with other acoustical parameters.
Short-term inverse-agonist treatment induces reciprocal changes in delta-opioid agonist and inverse-agonist binding capacity. (2001)

This study assessed the effects of short-term treatment (30-min) with inverse agonists on receptor protein levels and on the ability of agonists, inverse agonists, and neutral antagonists to bind to the human delta-opioid receptor (h delta OR). Incubation of human embryonic kidney 293s cells stably expressing h delta OR with the inverse agonist ICI174864 (1 microM) induced reciprocal changes in agonist and inverse-agonist binding. The total number of binding sites recognized by the agonists [(3)H]bremazocine and [(3)H][D-Pen(2),D-Pen(5)]-enkephalin was reduced by 33 and 57%, respectively, whereas binding capacity for the radiolabeled inverse-agonist [(3)H]Tyr-TicY[CH(2)NH]Cha-Phe-OH increased by 44%. In contrast, total receptor protein and sites labeled by neutral antagonists [(3)H]naltrindole and [(3)H]Tyr-D-Tic-Phe-Phe-OH remained unchanged. Pertussis toxin (PTX) and 5-guanylylimidodiphosphate (GppNHp) mimicked the outcome of ICI174864 pretreatment in promoting the loss of agonist binding sites. The lack of an additive effect on [(3)H]bremazocine binding when these three agents were combined indicates that inverse agonists may, in part, share the mechanism by which GppNHp and PTX reduce agonist binding capacity. Spontaneous recovery of maximal agonist binding capacity after inverse-agonist treatment was slow, suggesting a decrease in the isomerization rate between agonist- and inverse agonist-preferring conformations. Overall, the data presented are consistent with the idea that h delta ORs exist in multiple states capable of discriminating among ligands of different levels of efficacy and show that, after short-term treatment with an inverse agonist, the receptor ability to adopt conformations preferentially induced by agonist ligands is reduced.
Computer-aided analysis of GaAs n-i-n structures with a heavily compensated i-layer (1986)

Current-voltage characteristics and space-charge distributions in an n-i-n structure have been numerically analyzed and compared with Lampert's theory. It is found that an effective resistivity in the low-voltage region depends on acceptor and trap densities and the length of an i-layer. The analytical model has been presented to estimate the effective resistivity and the onset voltage for current rise. The back-gating effect also has been analyzed in terms of a separation distance between devices and an acceptor density. To achieve a good isolation between two devices in GaAs IC's, it is suggested that a shallow acceptor density as well as a trap density must be larger than a critical value.
Rapid CFD für die frühe konzeptionelle Design Phase (2012)

Ein wichtiger Teil des Produktentwicklungszyklus ist die Optimierung der strömungs- oder strukturmechanischen Eigenschaften einer Komponente, die normalerweise in einem iterativen und sehr aufwändigen Prozess stattfindet. Neben der Modifikation, Vereinfachung und des Vernetzens der Bauteilgeometrie, kann die Simulation mitunter Stunden bis Tage dauern. In frühen konzeptionellen Designphasen müssen verschiedene Materialparameter sowie unterschiedliche Geometrien ausprobiert und verglichen werden, um zu einem für das spätere Produkt optimalen Design zu gelangen. Dieser zeitaufwändige Prozess begrenzt deutlich die Anzahl der Möglichkeiten, die analysiert werden können. In dieser Arbeit wird das Framework "Rapid CFD" vorgestellt, das es ermöglicht, schnelle Strömungssimulationen für die frühe konzeptionelle Designphase einzusetzen. Um eine solche Geschwindigkeit zu erreichen, wird die Berechnung und Visualisierung von zweidimensionalen Strömungen in Echtzeit kombiniert. Das ermöglicht die interaktive Modifikation von Parametern und Randbedingungen und damit eine schnelle Analyse und Bewertung von unterschiedlichen Geometrien und eine frühzeitige Optimierung eines Bauteils. Das Framework führt alle Berechnungen auf der Graphikkarte (graphics processing unit - GPU) aus und vermeidet damit das aufwändige Kopieren zwischen CPU- und GPU-Hauptspeicher. Die Berechnungen werden auf einem Standard-Desktop PC ausgeführt, sodass die Simulationsergebnisse im Graphikkartenspeicher bleiben und direkt zur Visualisierung verwendet werden können. Für die Modellierung der Geometrie werden B-Splines verwendet, damit Benutzer lokal die Form durch einzelne Kontrollpunkte modifizieren können. Die Diskretisierung wird ebenfalls auf der GPU ausgeführt. Die Berechnung eines einzelnen Zeitschritts auch für Millionen von Unbekannten wird in Bruchteilen von Sekunden durchgeführt. Die intuitive geometrische Manipulation in Kombination mit der unmittelbaren Visualisierung der Simulationsgrößen wie Druck und Geschwindigkeit ermöglichen die direkte Analyse des Einflusses von Geometrie- und Parameteränderungen. Obwohl diese neuartige Simulationstechnik noch nicht die hohe Präzision konventioneller Simulationen erreicht, ermöglicht diese Technik die Beobachtung von Trends und Tendenzen.
Real-time performance of two token ring protocols (1995)

When designing real-time communication protocols, the primary objective is to guarantee the deadlines of synchronous messages while sustaining a high aggregate throughput. In this paper, we study two token ring protocols for their suitability in real-time systems. The priority driven protocol (e.g., IEEE 802.5) allows implementation of a priority based real-time scheduling discipline like the rate monotonic algorithm. The timed token protocol (e.g., FDDI) provides guaranteed bandwidth and bounded access time for synchronous messages. We study these two protocols by deriving their schedulability conditions, i.e., the conditions which determine whether a given message set can be guaranteed. Using these conditions, we evaluate the average performance of these protocols under different operating conditions. We observe that neither protocol dominates the other for the entire range of the system parameter space. We conclude that the priority driven protocol performs better for bandwidths in ...
Gastric Polyps: Clinical, Endoscopic and Pathological Features (2021)

Aims Gastric polyps are fairly frequent but they are asymptomatic lesions discovered incidentally on endoscopic examinations performed for various reasons. The objective of this study is to describe their anatomoclinical and endoscopic features.
Cognitive-haptic interfaces : robotics, sensorimotor processing, and bodily self-consciousness (2014)

Keywords: haptic interfaces ; robotics ; master-slave system ; cognitive neuroscience ; bodily self-consciousness ; multinsensory ; sensorimotor These Ecole polytechnique federale de Lausanne EPFL, n° 6252 (2014)Programme doctoral Systemes de production et RobotiqueFaculte des sciences et techniques de l'ingenieurInstitut de microtechniqueLaboratoire de systemes robotiques Jury: Dr A. Karimi (president) ; Prof. H. Bleuler, Prof. O. Blanke (directeurs) ; Prof. M. Bergamasco, Prof. A. Farne, Prof. R. Gassert (rapporteurs) Public defense: 2014-7-7 Note: Inaccurate public defense date shown on cover page: Jan. 7th, 2014 Reference doi:10.5075/epfl-thesis-6252Print copy in library catalog Record created on 2014-07-07, modified on 2016-08-09
LTE and HSPA for fixed wireless broadband: Datarates, coverage, and capacity in an Indian rural scenario (2011)

Fixed wireless systems are candidate solutions to connect billions of users not yet connected to the Internet. In this paper the capabilities of HSPA and LTE fixed wireless systems in terms of coverage, datarates, and capacity are discussed and evaluated. Results indicate that in an Indian rural scenario with an inter-site distance of 40km, monthly data volumes of 200MB per user together with a cell-edge datarate of 5Mbps are supported by HSPA on 10MHz (downlink, 1×2). For LTE monthly volumes of 430MB per user are reached in both downlink and uplink, together with cell-edge datarates of 5Mbps in downlink and 2Mbps in uplink. A key enabler is the use of directional rooftop terminal antennas.
A Case of Choledochocele Associated with an Ampullary Carcinoma (2006)

まれな胆道拡張症であるcholedochoceleは一般に膵管胆道合流異常を伴わないとされ癌合併の報告は少ない. 症例は62歳女性で, 心窩部痛を主訴に当院紹介となった. 腹部CTで下部胆管の. 胞状拡張を認め, 十二指腸鏡で乳頭口側に10mm大の弓状隆起を認めた. ERCP, PTCで下部胆管が.胞状に拡張し膵管は嚢胞外に開口して短い共通管を形成するcholedochoceleと診断し, 嚢胞内に不整な隆起性病変を認めたため癌の合併を疑い幽門輪温存膵頭十二指腸切除術を施行した. 組織学的には.胞部の乳頭部胆管より発生した中分化型管状腺癌と診断され, さらに総胆管粘膜には中等度異形成を認めた. 現在choledochoceleの治療においては.胞内の胆汁うっ滞の解除を目的に内視鏡的乳頭切開などの非手術的治療がまず考慮される場合が多いが, 胆道癌合併の可能性を念頭においた精査と経過観察が必要と考えられた.