gebhart/patrepeval huggingface dataset:
Diffusion Parameters Analysis in a Content-Based Image Retrieval Task for Mobile Vision (2020)

Most recent computer vision tasks take into account the distribution of image features to obtain more powerful models and better performance. One of the most commonly used techniques to this purpose is the diffusion algorithm, which fuses manifold data and k-Nearest Neighbors (kNN) graphs. In this paper, we describe how we optimized diffusion in an image retrieval task aimed at mobile vision applications, in order to obtain a good trade-off between computation load and performance. From a computational efficiency viewpoint, the high complexity of the exhaustive creation of a full kNN graph for a large database renders such a process unfeasible on mobile devices. From a retrieval performance viewpoint, the diffusion parameters are strongly task-dependent and affect significantly the algorithm performance. In the method we describe herein, we tackle the first issue by using approximate algorithms in building the kNN tree. The main contribution of this work is the optimization of diffusion parameters using a genetic algorithm (GA), which allows us to guarantee high retrieval performance in spite of such a simplification. The results we have obtained confirm that the global search for the optimal diffusion parameters performed by a genetic algorithm is equivalent to a massive analysis of the diffusion parameter space for which an exhaustive search would be totally unfeasible. We show that even a grid search could often be less efficient (and effective) than the GA, i.e., that the genetic algorithm most often produces better diffusion settings when equal computing resources are available to the two approaches. Our method has been tested on several publicly-available datasets: Oxford5k, ROxford5k, Paris6k, RParis6k, and Oxford105k, and compared to other mainstream approaches.
Development of Cationic Liposomes Conjugated with HVJ and Immunoliposomes with anti-Thy-1 Antibody (2003)

Today nonviral gene transfer vectors attract more attention as a therapeutic strategy for human diseases, because viral vectors have problems, especially in immunogenicity and cytotoxicity. However, main limitation of nonviral vectors has been low efficiency of gene expression. To overcome this defect, we have developed a new class of gene transfer system, HVJ-cationic liposomes. The use of cationic lipid, DC-cholesterol, facilitates efficient entrapment of negatively charged macromolecules and efficient interaction with negatively charged plasma membrane. Moreover, the fusogenic envelope proteins of HVJ enhance delivery of genes and oligonucleotides. We have succeeded in obtaining 100-800 times higher gene expression than the conventional HVJ-liposome method. On the other hand, although several gene transfer methods have been utilized in clinical gene therapy trials, there is no almighty method. Thinking of problems in all methods including nonviral methods, the one thing that is common in all methods is we cannot target the specific organ or area. To improve the specificity of gene transfer we have succeeded in developing an immunoliposome (HVJ-liposome + Anti Thy 1 antibody). With this newly developed method, we performed specific gene transfer into the kidney especially to glomeruli. Taken together we have developed a novel nonviral vector system based on HVJ-liposome method.
Effect of sample displacement in time-sequential sampling of spatiotemporal signals (1983)

Algorithms for digitally processing sampled spatiotemporal signals typically ignore the fact that those samples were obtained time-sequentially, rather than instantaneously, at the beginning of each frame period The effect of displacing time-sequentially obtained samples to a non-time-sequential lattice is analyzed for both deterministic and nondeterministic signals Sample displacement is shown to cause unavoidable frequency-domain aliasing The resulting artifacts are compared in test signals that have been sampled with a lexicographic and bit-reversed ordering of the sample points
Conserved anti-inflammatory effects and sensing of butyrate in zebrafish (2020)

Abstract Short chain fatty acids (SCFAs) are produced by microbial fermentation of dietary fiber in the gut. Butyrate is a particularly important SCFA with anti-inflammatory properties and is generally present at lower levels in inflammatory diseases associated with gut microbiota dysbiosis in mammals. We aimed to determine if SCFAs are produced by the zebrafish microbiome and if SCFAs exert conserved effects on zebrafish immunity as an example of the non-mammalian vertebrate immune system. We demonstrate that bacterial communities from adult zebrafish intestines synthesize all three main SCFA in vitro , although SCFA were below our detectable limits in zebrafish intestines in vivo . Immersion in butyrate, but not acetate or propionate, reduced the recruitment of neutrophils and M1-type pro-inflammatory macrophages to wounds. We found conservation of butyrate sensing by neutrophils via orthologs of the hydroxycarboxylic acid receptor 1 ( hcar1 ) gene. Neutrophils from Hcar1-depeleted embryos were no longer responsive to the anti-inflammatory effects of butyrate, while macrophage sensitivity to butyrate was independent of Hcar1. Our data demonstrate conservation of anti-inflammatory butyrate effects and identify the presence of a conserved molecular receptor in fish.
Pascal conductance series in ballistic one-dimensional LaAlO 3 /SrTiO 3 channels (2020)

One-dimensional electronic systems can support exotic collective phases because of the enhanced role of electron correlations. We describe the experimental observation of a series of quantized conductance steps within strongly interacting electron waveguides formed at the lanthanum aluminate-strontium titanate (LaAlO<sub>3</sub>/SrTiO<sub>3</sub>) interface. The waveguide conductance follows a characteristic sequence within Pascal's triangle: (1, 3, 6, 10, 15, …) ⋅ <i>e</i> <sup>2</sup> <i>/h</i>, where <i>e</i> is the electron charge and <i>h</i> is the Planck constant. This behavior is consistent with the existence of a family of degenerate quantum liquids formed from bound states of <i>n</i> = 2, 3, 4, … electrons. Our experimental setup could provide a setting for solid-state analogs of a wide range of composite fermionic phases.
Preparation and In Vitro Characterization of Multifunctional Nanoemulsions for Simultaneous MR Imaging and Targeted Drug Delivery (2006)

Cancer therapy can significantly benefit from simultaneous imaging and targeted drug delivery. Using oils rich in polyunsaturated fatty acids (PUFA), such as gamma-linolenic acid (GLA), we have formulated oil-in-water nanoemulsions for simultaneous magnetic resonance imaging (MRI) and site-specific drug delivery. The nanoemulsions, formulated with pine-nut oil that contains at least 20% GLA, consists of oil droplets stabilized with phosphatidylethanolamine conjugated to diethylenetriaminepentaacetic acid (DTPA) that provides high affinity for specific metal ions, and the lipophilic core, which can encapsulate hydrophobic anticancer drugs. In the present case, the nanoemulsions are loaded with paclitaxel, a potent anticancer drug and also with gadolinium ions (Gd 3+ ) to provide contrast enhancement in magnetic resonance imaging (MRI). The Gd 3+ loaded nanoemulsions have a diameter of around 100 nm and are small enough to pass easily through the vasculature. These nanoemulsions have been shown to reduce magnetic relaxation times in vitro and also to deliver drug efficiently in tumor cells, thus demonstrating the multifunctionality of the system.
Imaeg Blur Reduction for Cell-Phone Cameras Via Adaptive Tonal Correction (2007)

Image blur occurs often when using a cell-phone camera due to handshakes or jitter. Although there exist many motion deblurring algorithms in the literature, the computational complexities of these algorithms and the assumptions considered make them unsuitable for deployment on a cell-phone camera processor. This paper presents an image blur reduction algorithm for cell-phone cameras having a low computational complexity and without making any assumption about the handshake motion. This algorithm utilizes one low-exposure image in addition to a blurred image to perform a blur reduction operation via tonal correction. The developed tonal correction approach is adaptive to the scene by taking into consideration the brightness and contrast of the blurred image. The results obtained indicate the effectiveness of this blur reduction algorithm for handshake blurred images captured by a cell-phone camera.
Advance in Double Pump-Probe Technique for Triplet Quantum Yield Determination (2011)

The double pump-probe method allows determination of singlet and triplet excited state parameters, but we show that this method has limitations. We describe how to overcome such limitations allowing unambiguous determination of the triplet yield.
Design of Low-Loss Polarization Splitting Grating Couplers (2014)

We report polarization splitting grating couplers on double-SOI substrates with loss below 2 dB, optimized polarization dependence and excellent manufacturability. We illustrate the optimization of the scatterers with electromagnetic simulations.
Potential negative consequences of non‐consented switch of inhaled medications and devices in asthma patients (2013)

Given the increasing pressure for reduced costs and efficient allocation of limited healthcare resources, an additional investment in ensuring high medication adherence may lead to greater savings due to a potentially decreased demand for healthcare services. In contrast, savings achieved in acquisition costs may result in a greater net loss due to increased healthcare consumption caused by decreased asthma control.
Universal interfaces and information technology (2022)

The black and white flow chart starts from the top with a box on the left side titled “CAUSES” in capital letters. Underneath this title in lowercase letters are the causes for an impairment, which are disease, injury, or genetic difference. The inability to access is further described in lowercase letters as the inability to use standard product(s) as they are designed due to mismatch between abilities and requirements of the products. The first approach, changing the individual, is based on a medical model and is a very important strategy. It seeks to increase the basic abilities of the individual through both medical and other rehabilitation strategies. It may include surgery and rehabilitation therapy, but also includes training, the learning of techniques from peers, and in many cases, equipping the individual with personal assistive technologies such as glasses, hearing aids, prostheses, splints, and wheelchairs.
The Spontaneous Growth of Pb Whisker from the Pb<sub>60</sub>Sn<sub>40</sub> Solder Layer on the Au Coating (2015)

In a recent failure analysis case of relay, the pure Pb whisker growth is found on the Pb 60 Sn 40 solder layer on the Au coating of the spring leaf. The content analysis by the EDX shows that the Pb whisker grows from the Pb grain, which is surrounded by the AuSn intermetallic compound. It is thought that the elastic force of the spring leaf and the compressive stress from the intermetallic compound contributes to the Pb whisker growth, and the later factor is confirmed by the FIB (focused ion beam) result. Besides, the statistics result shows that the longer Pb whisker corresponds to the thicker Au coating, which could be explained by the effect of Au: forming AuSn intermetallic compound and Pb rich area. This work enriches our understandings on the metal whisker growth and consequently potential failure mode of SnPb solder.
A new DNA marker, D3S740, Identifies a Mspl polymorphism on chromosome 3p (1991)

XLIB25-75" (D3S743) is a 2.4 kb EcoRI insert isolated from a Charon 21 A human chromosome 3 library (1).
JPEG-HDR (2005)

The transition from traditional 24-bit RGB to high dynamic range (HDR) images is hindered by excessively large file formats with no backwards compatibility. In this paper, we demonstrate a simple approach to HDR encoding that parallels the evolution of color television from its grayscale beginnings. A tone-mapped version of each HDR original is accompanied by restorative information carried in a subband of a standard output-referred image. This subband contains a compressed ratio image, which when multiplied by the tone-mapped foreground, recovers the HDR original. The tone-mapped image data is also compressed, and the composite is delivered in a standard JPEG wrapper. To naïve software, the image looks like any other, and displays as a tone-mapped version of the original. To HDR-enabled software, the foreground image is merely a tone-mapping suggestion, as the original pixel data are available by decoding the information in the subband. Our method further extends the color range to encompass the visible gamut, enabling a new generation of display devices that are just beginning to enter the market.
Field Study on the Immunological Response and Protective Effect of a Licensed Autogenous Vaccine to Control Streptococcus suis Infections in Post-Weaned Piglets (2020)

<i>Streptococcus suis</i> is one of the most important bacterial pathogens in weaned piglets and responsible for serious economic losses to the swine industry. Currently, mostly autogenous vaccines composed of killed bacteria (bacterins) are available. However, immunological and protective data from field studies are missing. We report for the first time a comparative field study on the immunological response induced by an autogenous vaccine applied to either piglets or sows in a farm with recurrent <i>S. suis</i> problems. (I) Piglets from non-vaccinated sows received an autogenous bacterin during the first week and at three weeks of age. (II) Sows received the vaccine at five and three weeks pre-farrowing and piglets were non-vaccinated. Levels, isotype profile and opsonophagocytosis capacity of the serum antibodies induced by vaccination were evaluated. Vaccination of piglets failed to induce an active immune response. Vaccination of sows induced a significant increase in anti-<i>S. suis</i> antibodies, mainly composed of IgG1. However, isotype switching was modulated by the <i>S. suis</i> serotype included in the vaccine formulation. Despite this antibody increase in vaccinated sows, transfer of maternal immunity to piglets was not different from the control group (i.e., piglets from non-vaccinated sows). Notably, levels of maternal antibodies in piglets were already very high with marked opsonophagocytosis capacity at one week of age, independently of the vaccination program. However, their levels decreased by three weeks of age, indicating possible absence of antibodies in the post-weaning high-risk period. These observations correlated with lack of clinical protection in the farm. Overall, a piglet or a sow vaccination program herein mostly failed to induce lasting protection in nursery piglets. An improvement of vaccine formulation or an optimized program may be required.
A 3-V, 6-Bit C-2C Digital-to-Analog Converter Using Complementary Organic Thin-Film Transistors on Glass (2010)

A 3-V, 6-bit DAC is designed using complementary organic thin-film transistors on a glass substrate. The p-channel and n-channel transistors utilize dinaphthothienothiophene (DNTT) and hexadecafluorocopperphthalocyanine (F <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">16</sub> CuPc) as the organic semiconductors, respectively. A low-temperature process compatible with flexible plastic substrates is used to fabricate the circuit. The DAC utilizes switched capacitors to circumvent the large transistor-current variations, and a C-2C structure to avoid the large capacitances that would otherwise be required in the thin-film process. With calibration, the DAC achieves DNL and INL of less than 1 LSB at a conversion rate of 100 Hz.
Redox regulation of TNF signaling (1999)

TNF is produced during inflammation and induces, among other activities, cell death in sensitive tumour cells. We previously reported an increased generation of ROS in TNF-treated L929 fibrosarcoma cells prior to cell death. These ROS are of mitochondrial origin and participate in the cell death process. Presently, we focus on the identification of parameters that control ROS production and subsequent cytotoxicity. From the cytotoxic properties and susceptibility to scavenging of TNF-induced ROS as compared to pro-oxidant-induced ROS we conclude that TNF-mediated ROS generation and their lethal action are confined to the inner mitochondrial membrane. Oxidative substrates, electron-transport inhibitors, glutathione and thiol-reactive agents but also caspase inhibitors modulate TNF-induced ROS production and imply the existence of a negative regulator of ROS production. Inactivation of this regulator by a TNF-induced reduction of NAD(P)H levels and/or formation of intraprotein disulfides would be responsible for ROS generation.
5G micro-operator networks — A key enabler for new verticals and markets (2017)

The demand for wireless information exchange in the form of data and multimedia content has been growing exponentially over the past few years, and the trends are expected to persist for the future. Due to the continued growth in demand and support required for new use cases and features, currently the fifth generation (5G) of mobile networks are being developed. We build on top of the concept of micro-operators and discuss the use of cloud-based deployments to enable connectivity and service provisioning in the new paradigms. The use of such networks for supporting new application and services from verticals, related challenges and impacts on network security and the regulatory support from new spectrum regimes are also discussed. Performance issues and optimization approaches are outlined to enable a fast and efficient deployment of 5G networks which are suitable for new verticals and markets, providing tailored services and applications.
Over-current relay coordination for the protection of offshore wind power grid with HVDC connection (2012)

An offshore wind power plant is spread over a large area as there are tens or hundreds of turbine units connected to a common collector system. Large and distant offshore wind power plants can be connected to the onshore grid using voltage source converter (VSC) based high voltage direct current (HVDC) transmission. The whole wind power plant will be affected if there is an electrical fault in the offshore collector grid. Therefore, an efficient relay protection scheme is necessary. This paper describes the use of overcurrent relays for the detection and discrimination of faults in the offshore wind power plant grid. When the turbines are equipped with full scale converters, and there is a VSC-HVDC connection, the offshore wind power plant grid has power electronic converters at all the terminals. Relay coordination is a problem in such a scenario, as the converters operate in current limiting mode during faults. This paper presents a relay coordination scheme using overcurrent relays for the offshore wind power grid protection. There are some overreach cases which can be discriminated using the IEC-61850 based communication capabilities of modern relays. The proposed scheme has been demonstrated through real time simulation studies. A test wind power plant grid has been modelled in Real Time Digital Simulator (RTDS) and a physical over-current relay (with IEC 61850 communication) is used to detect the fault. Relay setting parameters are based upon maximum nominal currents.
Visual and haptic precision and inter-modal perception of curved surfaces (2010)

It has frequently been reported that stereoscopically-defined, curved surfaces have greater perceived curvature when the axis is horizontal (tilt = 90 deg) than when it is vertical (tilt = 0 deg). This difference, which has been called curvature anisotropy, would be unlikely to occur in haptics. In our experiments, observers made curvature discriminations from visual information alone, haptic information alone, and from both. Visual stimuli were curved surfaces depicted by random-dot stereograms, partially occluded by an aperture. PHANToM force-feedback devices were used to create the haptic stimuli. The parabolic curved surfaces were oriented vertically (tilt = 0 deg) or horizontally (tilt = 90 deg). We found that most observers made finer curvature discriminations visually for tilt = 90 than for tilt = 0 and that haptic discrimination thresholds did not vary with tilt. We used the within-modal discrimination thresholds to set the parameters of a maximum-likelihood estimator for inter-modal visual-haptic judgments. The MLE model predicts how the weights given visual and haptic information should vary with tilt in an inter-modal experiment. The inter-modal results were quite consistent with the predictions. Observers gave predictably more weight to vision when the surfaces were oriented horizontally than when they were oriented vertically. Thus, the relative reliability of visual and haptic information influences inter-modal perception of curvature in a sensible and predictable fashion.
Integrated assembly and ressource planning in production line design (1995)

info:eu-repo/semantics/published
The large strain compression, tension, and simple shear of polycarbonate (1994)

Abstract Polymeric materials subjected to large strains undergo an evolution in molecular orientation. The developing orientation and corresponding strengthening are highly dependent on the state of strain. In this paper, we examine and compare the very different stress‐strain results of polycarbonate produced from four types of mechanical testing: uniaxial compression, plane strain compression, uniaxial tension, and simple shear. These tests produce different states of orientation within the material and, in the case of simple shear, the principle axes of orientation rotate during the deformation. The ability of the recent constitutive model of Arruda and Boyce (1992) to predict the to predict the observed behavior is evaluated. The model has been incoporated into a finite element code in order to properly simulate the material behavior during the inhomogenous deformations of tension (cold drawing) and simple shear. The material properties of the model are obtained from the uniaxial compression test and the model is then found to be truly predictive of the other states of deformation demonstrating its fully three dimensional capability. The disadvantages of the tensile and simple shear tests for obtaining the data needed to accurately quantify the large strain material behavior of polymers are shown and discussed.
Systems and methods for fast detection of elephant flows in network traffic (2023)

In a system for efficiently detecting large/elephant flows in a network, the rate at which the received packets are sampled is adjusted according to a top flow detection likelihood computed for a cache of flows identified in the arriving network traffic. After observing packets sampled from the network, Dirichlet-Categorical inference is employed to calculate a posterior distribution that captures uncertainty about the sizes of each flow, yielding a top flow detection likelihood. The posterior distribution is used to find the most likely subset of elephant flows. The technique rapidly converges to the optimal sampling rate at a speed O(1/n), where n is the number of packet samples received, and the only hyperparameter required is the targeted detection likelihood.