gebhart/patrepeval huggingface dataset:
Texture-Aware SLAM Using Stereo Imagery and Inertial Information (2016)

We present a gaze control method that augments an existing stereo and inertial Simultaneous Localization And Mapping (SLAM) system by directing the stereo camera towards feature-rich regions of the scene. Our integrated active SLAM system is based on careful triangulation of visual features, existing successful nonlinear optimization, and visual loop closing frameworks. It relies on the tight coupling of IMU measurements with constraints imposed by visual correspondences from both stereo and motion. Alongside the SLAM system, the gaze control module also runs in real-time and includes an efficient online classifier that segments the scene into texture classes and assigns a quality score to each class that correlates with the availability of reliable features for tracking. Based on this quality score, the gaze selection module controls a pan-tilt unit that directs the camera to focus on high-reward texture classes. We validate our system in both indoor and outdoor spaces, and we show that active gaze control crucially improves the robustness and long-term operation of the localization system.
Ligated anionic block copolymerization of methyl methacrylate withn-butyl acrylate andn-nonyl acrylate as promoted by lithium 2-(2-methoxyethoxy) ethoxide/diphenylmethyllithium (1997)

Poly(methyl methacrylate-b-n-butyl acrylate) (PMMA-b-Pn-BuA) and poly(methyl methacrylate-b-n-nonyl acrylate) (PMMA-b-Pn-NonA) diblock copolymers have been successfully synthesized by the sequential anionic polymerization of methyl methacrylate (MMA) and the n-alkyl acrylate (n-BuA or n-NonA), in a 90/10 toluene/tetrahydrofuran (THF) mixture at −78°C. When diphenylmethyllithium (DPMLi) ligated with lithium 2-(2-methoxyethoxy) ethoxide (LiOEEM) is used as the initiator, the polymerization of each block appears to be living. Molecular weight and composition of block copolymers can be predicted from the monomer over initator molar ratio and the molecular weight distribution is narrow. Size exclusion chromatography (SEC) supports that no homo-PMMA contaminates the final copolymer. Although the reverse polymerization sequence Pn-NonA-b-PMMA always results in some contamination by homo-Pn-NonA, it has no really significant effect on the final product characteristics. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 1543–1548, 1997
Distributed media processing on multiple computing servers (2015)

We propose distributed media computing method for high performance and massive computing of media processing. By dividing media streams temporally and spatially, and processing them, the method reduces the elapsed time of media processing and improves the system scalability. The experiment results show the method increases the elapsed time. The performance degradation could be mitigated using high-speed interconnection networking technology. Furthermore, we could utilize distributed and parallel processing approach by distributing media processing into remote servers.
P‐93: Characterizing Dielectric Tensors with Biaxial Ellipsometry (2008)

Abstract Dielectric tensors of anisotropic substrates and films can be determined by biaxial ellipsometry, an extension of conventional ellipsometry. This technique utilizes an angle‐of‐incidence Mueller matrix imaging polarimeter. An example of the determination of the dielectric tensor of liquid crystal polymer films for retarders is presented.
Automatic Characterization of the Refractive Index Profile of Fibers by Interferometry (2002)

Interferometry provides a non-destructive method for examining the refractive index profile or the radial birefringence distribution within fibers. The key step in the interference data reduction involves the extraction of the refractive index profile along the axial direction of the fiber. The profile is due to the path difference between the fiber and the immersion liquid when a fiber is oriented perpendicular to the fringe field in an interference microscope. The refractive index provides a measure of the degree of optical anisotropy and is indicative of the degree of orientation of the structure. This is of particular interest to nonwovens because in thermally bonded nonwovens, the orientation plays a major role in how well the fibers are bonded and the ultimate properties of the fabric. Despite its long history, however, the interpretation of the interference fringe shift is not precisely defined. Consequently, the data are not reproducible from one laboratory to the next. We outline below an objective and quantitative method for precisely measuring a fiber's refractive index profile from a digitized image of the interference fringe. This new algorithm uses the Fast Fourier Transform (FFT) to remove the inherent noise present in the fiber interferogram and to aid in extracting the profile.
The Surgical Treatments Outcomes Project for Dysfunctional Uterine Bleeding (2011)

Surgical Treatments Outcomes Project for Dysfunctional Uterine Bleeding is an agency for the Healthcare Research and Quality project built around a multicenter randomized clinical trial comparing hysterectomy and endometrial ablation (EA) for the treatment of heavy menstrual bleeding unrelated to structural causes. For inclusion, women self-defined their complaint, and the endometrial cavity was evaluated to exclude structural lesions. The primary outcomes were bleeding and major problem "solved" at 24 months, with length of institutional stay, surgical complications, quality of life, and reoperation included as secondary outcomes. Also measured was the baseline economic impact of heavy menstrual bleeding. The randomized controlled trial enrolled 237 women. Institutional stay was longer, and perioperative adverse events were more common and severe for those randomized to hysterectomy. At 24 months, 94.4% and 84.9% of women randomized to hysterectomy and EA, respectively, considered their major problem to be solved; at 48 months, the numbers were similar at 98.0% and 85.1%. Postprocedure quality-of-life measures (SF-36, EuroQOL) improved similarly in both groups, but reoperation was more common for women undergoing EA (34, or 30.9%, at 60 mo), with most (32 of 34) selecting hysterectomy.At baseline, women reported missed work as well as activity and leisure limitations. Excess monetary costs were $306 per patient-year (95% CI, $30-$1,872). Excess work and home management loss costs were $2,152 (95% CI, $1,862-$2,479). It was estimated that successful treatment, regardless of the type of intervention, could result in a gain of 1.8 quality-adjusted life years. Future studies will examine and compare the impact of the study interventions on economic outcomes.
The Rheology of Dense Colloidal Pastes Used in 3D-Printing (2014)

The rheology of dense, aqueous pastes of soda-lime glass frit and a polysaccharide binder, designed for use in a recently developed glass 3D-printing process, is reported. Pastes containing either xanthan gum or 2-hydroxyethyl cellulose binder and glass frit with average particle sizes of either 38 &#x2013; 63 &#x3BC;m or 150 &#x2013; 250 &#x3BC;m were investigated using a controlled stress rheometer over an applied stress range of (10.66 &#x2013; 942.2 Pa). The pastes exhibited yield behaviour followed by shear-thinning as the applied stress was increased, in a similar manner to highly concentrated polysaccharide solutions. The yield stress was found to be reduced for pastes containing xanthan gum binder and larger glass particles.The physical properties (Young's modulus, opacity and density) of glass produced by kiln-firing pastes used for glass 3D-printing are also reported. Paste composition was varied to investigate the effect of micro scale changes on the macro scale glass properties. The average glass particle diameter in the frit was varied in the range 38 &#x2013; 250 &#x3BC;m and glass produced from &#x2018;pastes&#x2019; containing frit-only, frit with binder and frit with binder and water were compared.
Regulation of Hexokinase in Cultured Gliomas (1985)

Positron emission computed tomographic (PECT) scanning studies have demonstrated that high grade gliomas exhibit increased 2-[18F]fluoro-2-deoxyglucose (18FDG) uptake compared to cerebral white matter and low grade gliomas. Hexokinase catalyzes the phosphorylation of glucose, as well as 18FDG and 2-deoxyglucose (2DG), thereby "trapping" these slowly metabolized analogues intracellularly. We hypothesize that a similar hexokinase-mediated uptake of glucose and glucose analogues occurs in vitro. Hexokinase activity was assayed in homogenates of tissue-cultured lines derived from high (IV) and low (II) grade gliomas and in fibroblasts derived from skin. With glucose as substrate, the maximal activity (Vmax) in the Grade IV lines was 200% of the activity found in the Grade II line, fibroblasts, and astrocytes; however, the Michaelis substrate affinity constant (Km) bore no relationship to tumor grade. With 2DG as substrate, the Vmax of all cell lines decreased, but the Grade IV lines still tended to have greater activity than the others. The Km values for 2DG were 5 times higher than those for glucose. Hexokinase is found in two subcellular compartments: an active form reversibly bound to mitochondria and a less active, cytosolic form. Up to 20% of the total hexokinase was found in the cytosol in all lines tested. High energy phosphate compounds (ATP, ADP, CTP, and others) displaced mitochondria-bound hexokinase, which increased the cytosolic form by 2-fold in the glioma lines, but fibroblast hexokinase distribution was unaffected. Our results suggest that: (a) high grade gliomas have increased hexokinase activity, which may explain the grade-related differences in 18FDG uptake observed by PECT scanning, and (b) human glioma hexokinases may be regulated by reversible subcellular compartmentation.
<title>3-D blood vessel reconstruction by simulated annealing</title> (1990)

Simulated annealing a Monte Carlolike algorithm is applied to 3D blood vessel reconstruction based on digital subtraction angiography(DSA). Since the imaging system is highly illposed because of the insufficient number of projections good reconstruction can not be achieved with only the observed data. This paper shows that even in such cases objects can be well reconstructed by simulated annealing making use of constraints based on a priori knowledge. The performance of this method for photon noise and the feasibility of 3D reconstruction are discussed through some computer simulations. 1.
Contribution à l'étude des mécanismes de la photosensibilité de verres et de fibres dopés par des ions de terre rare ou par de l'oxyde de germanium (1997)

Ce memoire traite de l'etude de la photosensibilite de verres ou de fibres silices ou fluores dopes par des ions de terre rare ou par de l'oxyde de germanium. On definit la photosensibilite d'un verre comme etant la variation permanente de son indice de refraction lorsque celui-ci est insole par un rayonnement ultraviolet de longueur d'onde convenablement choisie. Nous presentons dans ce memoire la premiere mise en evidence d'une photosensibilite dans des verres fluorozirconates. Le procede utilise pour rendre ces verres photosensible a consiste a les doper par des ions cerium. Ces premiers resultats ont ete utilises pour realiser une cavite laser photoinscrite dans une fibre fluorozirconate codopee a l'erbium emettant a 1. 56 m. La methode de photosensibilisation des verres et fibres germanosilicates par un chargement en hydrogene moleculaire au prealable de l'insolation ultraviolette a ete etendue au cas des verres aluminosilicates dopes par des ions de terre rare. Nous montrons dans ce memoire que ce procede permet d'augmenter la photosensibilite de ces verres d'un ordre de grandeur au minimum. Dans ce memoire nous avons presente des experiences destinees a determiner les mecanismes a l'origine de la photosensibilite de type iia dans les fibres germanosilicates fortement dopees a l'oxyde de germanium. Cette etude nous a permis de montrer que l'etat de contraintes dans lequel se trouve la fibre constitue un parametre essentiel dans l'apparition d'une photosensibilite de type iia. Dans ce memoire, nous avons cherche a preciser les mecanismes microscopiques a l'origine de la photosensibilite de verres dopes par des ions de terre rare. Nous avons etudie les contributions respectives du modele des centres colores et du modele de densification photoelastique. Nous presentons dans le memoire les resultats d'une serie d'experiences de mise a l'epreuve du modele des centres colores. Nous avons ainsi pu etablir que le photochromisme observe ne constitue qu'un phenomene precurseur de la photosensibilite dans ces verres.
Germanium nanocrystals synthesized in high-boiling-point organic solvents. (2006)

Abstract not provided
Overcoming the blood–brain barrier by Annexin A1-binding peptide to target brain tumours (2020)

IF7C(RR)-SN38 crosses the blood-brain barrier and suppresses growth of brain tumours in mouse models. Solutol HS15-formulated IF7C(RR)-SN38 may have promoted an antitumour immune response.
Extracting dimensional geometric parameters from B-spline surface models (1991)

In an integrated design environment, the common thread between the different design stages is usually the geometric model of the part. However, the requirements for the geometric definition of the design is usually different for each stage. The transformation of data between these different stages is essential for the success of the integrated design environment. For example, conceptual design systems usually deal with geometric dimensional parameters (e.g. length, radius, etc.) whereas preliminary design systems frequently require the geometry definition to be in the form of surface models. This dissertation presents the necessity and scope of creating and implementing methodologies to obtain dimensional geometric parameters from the surface description of an object. Since the study of geometric modeling and parametric surfaces is a new field, few classical methods are applicable. Methods and algorithms for the extraction of various geometry parameters are created. A few methods to pre-process and manipulate these surfaces before the parameter extraction methods can be applied are outlined. One of the most important applications of parameter extraction is in the field of aircraft design. There are two important aspects of geometry data conversion in the design cycle. The first is the conversion from conceptual CAD models to CFD compatible models. The second is the conversion from surface representations of CFD models to obtain component parameters (e.g. wing span, fuselage fineness ratio, moments of inertia, etc.). The methods created in this dissertation are used to extract geometric parameters of importance in aircraft design. This enables the design cycle to be complete and promotes integrated design. These methods have been implemented in the aircraft design software, ACSYNT. Examples of the conversion of data from B-spline surface models to dimensional geometric parameters using these methods are included. The emphasis of this dissertation is on non-uniform B-spline surfaces. Methods for obtaining geometric parameters from aircraft models described by characteristic points are also considered briefly.
Complete Genome Sequence of the Cellulolytic Thermophile Clostridium thermocellum DSM1313 (2011)

Clostridium thermocellum DSM1313 is a thermophilic, anaerobic bacterium with some of the highest rates of cellulose hydrolysis reported. The complete genome sequence reveals a suite of carbohydrate-active enzymes and demonstrates a level of diversity at the species level distinguishing it from the type strain ATCC 27405.
Privacy-Preserving Distributed Probabilistic Load Flow (2020)

In a multi-regional interconnected grid, the probabilistic load flow (PLF) of any region cannot be calculated individually but should consider the uncertainties introduced in other areas. Accordingly, the topologies, loads, and generations of every region are needed. Although the renewable generation data could be assumed as publicly known, some regional independent system operators (ISOs) still would not share important parameters with others. This motivates the development of a privacy-preserving distributed (PPD) PLF method. The challenge is to identify the mapping between the regional flows and uncertain power injections across regions without full information about the entire grid. The main idea of this paper is to respectively calculate the coefficient matrix and constant vector of the mapping: for the former, a PPD accelerated projection-based consensus algorithm is proposed; for the latter, a privacy-preserving accelerated average consensus algorithm is leveraged. Consequently, a PLF method is derived for each ISO to analytically obtain its regional joint PLF in a distributed way without sharing parameters - the key contribution of this paper. Experiments on the 118- and 1354-bus systems demonstrate that this method can generate the same results as the corresponding centralized method, and has satisfactory accuracy compared with frequently used PLF methods.
Novel Synthesis of Differentially Substituted 5,7-Dialkoxyquinazolin-4-ones (2008)

Abstract The preparation of 7-ethoxy-5-fluoroquinazolin-4-one, starting from 3,5-difluorophenol, is described. Further reaction with alkoxide then gives differentially substituted 5,7-dialkoxyquinazolin-4-ones.
Direct 3D-rotation estimation from spherical images via a generalized shift theorem (2003)

Omnidirectional images arising from 3D-motion of a camera contain persistent structures over a large variation of motions because of their large field of view. This persistence made appearance-based methods attractive for robot localization given reference views. Assuming that central omnidirectional images can be mapped to the sphere, the question is what are the underlying mappings of the sphere that can reflect a rotational camera motion. Given such a mapping, we propose a systematic way for finding invariance and the mapping parameters themselves based on the generalization of the Fourier transform. Using results from representation theory, we can generalize the Fourier transform to any homogeneous space with a transitively acting group. Such a case is the sphere with rotation as the acting group. The spherical harmonics of an image pair are related to each other through a shift theorem involving the irreducible representation of the rotation group. We show how to extract Euler angles using this theorem. We study the effect of the number of spherical harmonic coefficients as well as the effect of violation of appearance persistence in real imagery.
Transporter-Driven Engineering of a Genetic Biosensor for the Detection and Production of Short-Branched Chain Fatty Acids in Saccharomyces cerevisiae (2022)

Biosensors can be used for real-time monitoring of metabolites and high-throughput screening of producer strains. Use of biosensors has facilitated strain engineering to efficiently produce value-added compounds. Following our recent work on the production of short branched-chain fatty acids (SBCFAs) in engineered <i>Saccharomyces cerevisiae</i>, here we harnessed a weak organic acid transporter Pdr12p, engineered a whole-cell biosensor to detect exogenous and intracellular SBCFAs and optimized the biosensor's performance by varying <i>PDR12</i> expression. We firstly constructed the biosensor and evaluated its response to a range of short-chain carboxylic acids. Next, we optimized its sensitivity and operational range by deletion and overexpression of <i>PDR12</i>. We found that the biosensor responded to exogenous SBCFAs including isovaleric acid, isobutyric acid and 2-methylbutanoic acid. <i>PDR12</i> deletion enhanced the biosensor's sensitivity to isovaleric acid at a low concentration and <i>PDR12</i> overexpression shifted the operational range towards a higher concentration. Lastly, the deletion of <i>PDR12</i> improved the biosensor's sensitivity to the SBCFAs produced in our previously engineered SBCFA-overproducing strain. To our knowledge, our work represents the first study on employing an ATP-binding-cassette transporter to engineer a transcription-factor-based genetic biosensor for sensing SBCFAs in <i>S. cerevisiae</i>. Our findings provide useful insights into SBCFA detection by a genetic biosensor that will facilitate the screening of SBCFA-overproducing strains.
Small-footprint, high-efficiency, integrated transmitters for high-speed optical interconnect applications (2004)

Short-cavity InGaAsP/InP DBR lasers with integrated SOA and EAM were fabricated using a quantum well intermixing processing platform. &gt;10mW output power and 17.5% wall-plug efficiency was achieved at 30mA. EAM extinction was &gt;15dB at -4V.
BIOLOGICAL EXTRACTION OF METALS: THE RATE-CONTROLLING STEP (1996)

Abstract Although an enormous amount of work has been done in the area of biohydrometalJurgy, the influence of the inert solid matrix on metal extraction, and consequently the rate-controlling mechanism have not been fully understood. Actually, most studies have mainly focused on the bioextraction of metals from high-grade mineral concentrates. Such an approach is important in elucidating the diffusion and reaction phenomena that are taking place on the surface of the mineral. In reality, however, the mineral is embedded within an inert solid matrix which will have significant effects on diffusion and chemical reaction rate processes. In this work, a detailed experimental kinetic study was conducted to incorporate this factor in an attempt to quantify the rate-controlling mechanism involved. The biological dissolution of pyrite in the presence of acidophilic Thiobacillus ferrooxidans was investigated in a batch experiments on three distinct mine waste rocks. The experiments were conducted on two particle sizes and at three operating temperatures. Based on particle size and activation energies results, it was found that intraparticle mass transfer resistances were solely the rate-controlling mechanism for this process This new finding is different from that reported by other investigators who underestimated the importance of intraparticle mass transfer resistances. Also, because similar processes are ubiquitous in nature, this work should have broad applications.
Finitely scoped procedure for generating fully relaxing strain-life curves (2019)

Since cycles-to-failure is typically the dependent variable in fatigue crack nucleation testing (and therefore known only after a test has executed), tests specified as a series of discrete strain levels on a material with unknown fatigue behavior can too easily lead to the exhaustion of either 1) available testing time or 2) available test specimens without producing a fully defined material characteristic curve. In order to avoid such operational problems, a fixed test time limit is enforced in the present work by linearly ramping the peak cyclic strain from a minimum initial value to the tensile strain at break over a fixed time period. By running the linear ramp fatigue test for a series of 3 fixed time periods (2 hours, 8 hours and 20 hours), and by analyzing the accumulation of damage as a function of strain and applied cycles, we show that the constant amplitude strain life curve can be recovered within a guaranteed time and specimen budget. The recovered curve is compared to the strain life curve obtained via the classical, direct, open-ended experimental method, demonstrating the accuracy of the method.
Erratum to: Prognostic implications of a carefully performed neurological assessment in patients with a first event suggestive of multiple sclerosis (2011)

In our article [1], we did not declare some potential competing interests for Prof. Dr. med. Ludwig Kappos:
Fabrication of SiGe DBR mirrors and microcavities (2005)

In this work, strain-balanced SiGe/Si DBRs are fabricated on the relaxed SiGe virtual substrates, and their structural and optical properties are investigated. Moreover, SiGe planar microcavity structures with Si/Ge quantum wells (QWs) or Ge quantum dots (QDs) are fabricated as an application of SiGe/Si DBRs.