gebhart/patrepeval huggingface dataset:
Polarization-Diversity Ring Slot Antenna With Frequency Agility (2012)

A design for polarization-diversity slot antennas with switchable frequency is described. The antenna structure is mainly composed of a radiating annular slot backed with a reflector and a quasi-lumped coupler with two different operating modes, quadrature hybrid mode and T-junction power divider mode. The resonant frequency of the slot antenna and the operating frequencies of the two modes of the coupler can be tuned with variable capacitors. First, the effects of changing capacitance values on the performances of the antenna and coupler are respectively analyzed. Then, according to the simulation results, validated with experiments, a reconfigurable antenna prototype integrating with several diodes and their related dc-bias networks is constructed. The prototype is designed to be with three working frequencies, and moreover it can provide one linear polarization and two circular polarizations at each working frequency. Details of measured antenna performances are shown.
Fabrication of submicron metallic grids with interference and phase-mask holography (2011)

Complex, submicron Cu metallic mesh nanostructures are made by electrochemical deposition using polymer templates made from photoresist. The polymer templates are fabricated with photoresist using two-beam interference holography and phase mask holography with three diffracted beams. Freestanding metallic mesh structures are made in two separate electrodepositions with perpendicular photoresist grating templates. Cu mesh square nanostructures having large (52.6%) open areas are also made by single electrodeposition with a photoresist template made with a phase mask. These structures have potential as electrodes in photonic devices.
Content-based filtering and personalization using structured metadata (2002)

Structured descriptions of multimedia content and automatically generated user profiles are used to filter content.
Visual Localization of Wireless Capsule Endoscopes Aided by Artificial Neural Networks (2017)

Various modalities are used for the examination of the gastrointestinal (GI) tract. One such modality is Wireless Capsule Endoscopy (WCE), a noninvasive technique which consists of a swallowable color camera that enables the detection of GI pathology with only minimal patient discomfort. Currently, tracking of the capsule position is estimated in the 3D abdominal space, using radio-frequency (RF) triangulation. The RF triangulation technique, however, does not provide sufficient information about the location of the capsule along the GI lumen, and consequently, the localization of any possible abnormality. Recently, we proposed a geometric visual odometry (VO) method for the localization of the capsule in the GI lumen. In this paper, we extend this state-of-art method by exploiting an artificial neural network (ANN) to augment the geometric method and achieve higher localization accuracy. The results of this novel approach are validated with an in-vitro experiment that provides ground truth information about the location of the capsule. The mean absolute error obtained, for a distance of 19.6cm, is 0.79±0.51cm.
Use of a commercial laser tracker for optical alignment (2007)

Laser trackers have been developed that project laser beams and use optical systems to provide three dimensional coordinate measurements. The laser trackers incorporate a servo system to steer a laser beam so that it tracks a retro-reflector, such as a corner cube. The line of sight gimbal angles and the radial distance to the retroreflector are used to determine the coordinates of the retroreflector relative to the tracker. In this paper, we explore the use of the laser tracker to define the metrology for aligning optical systems, including the use of mirrors and windows. We discuss how to optimize the geometry to take advantage of the tracker's most accurate measurements. We show how to use the tracker for measuring angles as well as points.
Coupling Efficiency for Phase Locking of a Spin Transfer Nano-Oscillator to a Microwave Current (2008)

The phase locking behavior of spin transfer nano-oscillators (STNOs) to an external microwave signal is experimentally studied as a function of the STNO intrinsic parameters. We extract the coupling strength from our data using the derived phase dynamics of a forced STNO. The predicted trends on the coupling strength for phase locking as a function of intrinsic features of the oscillators, i.e., power, linewidth, agility in current, are central to optimize the emitted power in arrays of mutually coupled STNOs.
Protecting cyber physical production systems using anomaly detection to enable self-adaptation (2018)

The industrial world is going through its fourth revolution also known as Industry 4.0. Modern industrial processes leverage advanced IT technologies to increase productivity and often combine multiple system concepts such as Internet of Things (IoT), Cyber Physical Systems (CPS) and Cloud Computing. Cyber Physical Production Systems (CPPS) are key enablers of this revolution. In CPPS, raw materials, machines, and operations are interconnected to form a sophisticated network. Protecting them against advanced cyber-threats is a priority concern for the future implementation of Industry 4.0 applications. Any impairment of such systems can lead, in fact, to catastrophic damages resulting in a substantial financial loss for governments, companies, as well as endanger the safety of the society. The need for high availability and reliability of these systems is therefore the pillar guiding our research. This paper proposes the adoption of anomaly detection as a method to support self-adaptation in CPPS and to ensure flexibility, reliability, and protection of industrial environments against modern cyber threats. An anomaly detection mechanism can be employed to monitor, and learn the normal behavior of an industrial system, and to generate alerts when the observed events indicate abnormal activities. On this concept we base our work, and we demonstrate how timely identifying critical security events can enable, through the self-adaptation (e.g., triggering automatic configuration changes), an efficient protection of the CPPS against advanced threats, and an effective containment of their effects.
Separation of Tantalum and Niobium by Liquid-Liquid Extraction (1954)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSeparation of Tantalum and Niobium by Liquid-Liquid ExtractionJ. R. Werning, K. B. Higbie, J. T. Grace, B. F. Speece, and H. L. GilbertCite this: Ind. Eng. Chem. 1954, 46, 4, 644–652Publication Date (Print):April 1, 1954Publication History Published online1 May 2002Published inissue 1 April 1954https://pubs.acs.org/doi/10.1021/ie50532a020https://doi.org/10.1021/ie50532a020research-articleACS PublicationsRequest reuse permissionsArticle Views250Altmetric-Citations30LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
Using the Construction of a Science Education Web Site as a Focus of a Directed Study Course in Undergraduate Elementary Science Education (1998)

This article describes the construction of an elementary science education site in a collaborative effort involving two university faculty members and two undergraduate elementary education program preservice teachers. The preservice teachers worked on the development of the site as part of a Directed Study Course after their semester long participation in a science methods class. This Web Site Group worked with several classes of elementary science methods students and in-service teachers to provide on-going feedback on the development of the site. With the current emphasis on connecting classrooms to the World Wide (WWW) and training teachers how to use this technology, collaborating with preservice teachers to develop a site provides faculty with more time and expertise to complete such a project. For the preservice teachers, these types of collaborations can be important in developing skills valuable to their own teaching, and in building leadership capabilities in science and technology. A tour of the site is provided with hypertext links.
Glutamate receptors of <i>Drosophila melanogaster</i> (1993)

The NMDA subtype of ionotropic glutamate receptors has been implicated in the activity-dependent modification of synaptic efficacy in the mammalian brain. Here we describe a cDNA isolated from Drosophila melanogaster which encodes a putative invertebrate NMDA receptor protein (DNMDAR-I). The deduced amino acid sequence of DNMDAR-I displays 46% amino acid identity to the rat NMDAR1 polypeptide and shows significant homology (16-23%) to other vertebrate and invertebrate glutamate receptor proteins. The DNMDAR-I gene maps to position 83AB of chromosome 3R and is highly expressed in the head of adult flies. Our data indicate that the NMDA subtype of glutamate receptors evolved early during phylogeny and suggest the existence of activity-dependent synaptic plasticity in the insect brain.
Assessment of epidermal growth factor receptor (EGFR, ErbB1) and HER2 (ErbB2) protein expression levels and response to lapatinib (Tykerb<sup>®</sup>, GW572016) in an expanded panel of human normal and tumour cell lines (2007)

The results suggest that simultaneous consideration of EGFR and HER2 expression, as well as tissue type yields the best determinant of lapatinib selectivity in cultured cells.
Resource Allocation Problems: Algorithmic Approaches (1989)

(1989). Resource Allocation Problems: Algorithmic Approaches. Journal of the Operational Research Society: Vol. 40, No. 7, pp. 701-702.
RGB-NIR imaging with exposure bracketing for joint denoising and deblurring of low-light color images (2017)

Color images taken in low light scenes are deteriorated with noise and motion blur. The simultaneous reduction of noise and motion blur from the low-light color images is difficult because the imposed noise hinders accurate motion blur kernel estimation. To overcome this problem, we build a novel imaging system using a single sensor that captures red, green, blue (RGB) and near-infrared (NIR) images. Our imaging system captures low-light scenes with exposure bracketing, which is a technique to acquire multiple images with different exposure times. It thus allows us to obtain the short- and long-exposure RGB/NIR images. Both the short- and long-exposure NIR images taken using an NIR flash unit can be captured with less noise; thus they enable estimation of motion blur kernel accurately. Based on this fact, we perform joint denoising and deblurring of the low-light color image with the estimated motion blur kernel. Our experiments using real raw data captured by our imaging system demonstrate the effectiveness of our method.
Controlled Assembly of Vesicle‐Based Nanocontainers on Layer‐by‐Layer Particles via DNA Hybridization (2009)

Microscopic colloidal particles allow a precise regulation of chemical reactions in time and place. A controlled assembly of multiple layers of intact lipid vesicles on a solid support provided by layer-by-layer particles functionalized by a covalent attachment of DNA oligonucleotides is reported (see image). Lipophilic complementary oligonucleotides are incorporated into lipid vesicles. Fusion of liposomes and release can be triggered.
Temperaturfunktionen der durch Mehrfachdotierung mit chiralen Verbindungen in einer nematischen Phase induzierten Helixganghöhe / Temperature Dependence of the Induced Helical Pitch of a Nematic Phase Using Several Chiral Additives (1979)

Abstract A helix structure can be induced in nematic phases by adding chiral compounds. In general the helix pitch increases with temperature. It is shown that by using two suitable doping agents, each of which would give different senses of helix rotation when used individually, a particular temperature behaviour can be obtained. Depending on the concentrations, a temperature independent pitch, for example, or a helix inversion can be achieved. The results of experiments using the nematic phase N 4 (Merck) show good agreement with the theoretically predicted temperature dependence of the pitch.
Same Value Analysis on Edwards Curves. (2015)

Recently, several research groups in cryptography have presented new elliptic curve model based on Edwards curves. These new curves were selected for their good performance and security perspectives. Cryptosystems based on elliptic curves in embedded devices can be vulnerable to Side-Channel Attacks (SCA), such as the Simple Power Analysis (SPA) or the Differential Power Analysis (DPA). In this paper, we analyze the existence of special points whose use in SCA is known as Same Value Analysis (SVA), for Edwards curves. These special points show up as internal collisions under power analysis. Our results indicate that no Edwards curve is safe from such an attacks.
Strain-amplified electroactive polymer actuator for haptic interfaces (2001)

The demand for actuators featuring biomimetic properties such as direct drive, high power density and intrinsic compliance is growing in robotics and bioengineering. Our work is aimed to increase the performance of a class of actuators utilizing active polymer components which are characterized under several different electrical stimulation conditions. In order to increase the active strain of the system we have considered a configuration inspired to McKibben muscle. In this configuration each active element is covered by a braid mesh shell (made with flexible, but not extensible, threads), which contracts when the element increases its volume. This technical solution amplifies the strain up to 50 times and can be utilized to reach tangible shortening of the actuator.
Microstructure and Mechanical Properties of Extruded Mg-Zn-Y Alloys with 14H Long Period Ordered Structure (2006)

The compositional dependence of mechanical properties and microstructural change of the extruded Mg-Zn-Y alloys has been investigated in the effort to develop a high strength Mg-Zn-Y alloy with long period ordered (LPO) structure. The extruded alloy Mg96Zn2Y2 exhibited a high yield strength of 390 MPa and elongation of 5% at room temperature, and of more than 300 MPa even at the elevated temperature of 473 K. The heat-treated ingot metallurgy (I/M) Mg-Zn-Y alloys containing very small amounts of yttrium and zinc are characterized by a lamellar phase constructed of 2H-Mg and 14H-LPO structures. Extrusion of the Mg-Zn-Y I/M alloys with LPO structure led to refinement of α-Mg grains and high dispersion of a hard lamellar phase consisting of torn-off 2H-Mg and bent LPO structures with random grain boundaries, resulting in strengthening of the alloys.
The Role of Thrombospondin 1 on Intestinal Inflammation and Carcinogenesis (2008)

Crohn's disease and ulcerative colitis are inflammatory bowel diseases (IBD) quite common in the United States and other Western countries. Patients suffering IBD are at greater risk of developing colorectal adenocarcinoma than the general population. Both, the adenoma-carcinoma and the inflammation-carcinogenesis processes are characterized by active angiogenesis. Recent studies also have shown that anti-angiogenesis might be a novel therapeutic approach for IBD. Thrombospondin 1 (TSP1) is an extracellular protein well known for its anti-angiogenic properties. TSP1 also has key functions in inflammation, which is assumed to be the primary cause for carcinogenesis in IBD. This review is focused on the role of TSP1 in colorectal carcinogenesis. The therapeutic effects of TSP derived-peptides on inhibiting the inflammationcarcinogenesis progression are also discussed.
High-Mobility Group Box 1 Inhibits Gastric Ulcer Healing through Toll-Like Receptor 4 and Receptor for Advanced Glycation End Products (2013)

High-mobility group box 1 (HMGB1) was initially discovered as a nuclear protein that interacts with DNA as a chromatin-associated non-histone protein to stabilize nucleosomes and to regulate the transcription of many genes in the nucleus. Once leaked or actively secreted into the extracellular environment, HMGB1 activates inflammatory pathways by stimulating multiple receptors, including Toll-like receptor (TLR) 2, TLR4, and receptor for advanced glycation end products (RAGE), leading to tissue injury. Although HMGB1's ability to induce inflammation has been well documented, no studies have examined the role of HMGB1 in wound healing in the gastrointestinal field. The aim of this study was to evaluate the role of HMGB1 and its receptors in the healing of gastric ulcers. We also investigated which receptor among TLR2, TLR4, or RAGE mediates HMGB1's effects on ulcer healing. Gastric ulcers were induced by serosal application of acetic acid in mice, and gastric tissues were processed for further evaluation. The induction of ulcer increased the immunohistochemical staining of cytoplasmic HMGB1 and elevated serum HMGB1 levels. Ulcer size, myeloperoxidase (MPO) activity, and the expression of tumor necrosis factor α (TNFα) mRNA peaked on day 4. Intraperitoneal administration of HMGB1 delayed ulcer healing and elevated MPO activity and TNFα expression. In contrast, administration of anti-HMGB1 antibody promoted ulcer healing and reduced MPO activity and TNFα expression. TLR4 and RAGE deficiency enhanced ulcer healing and reduced the level of TNFα, whereas ulcer healing in TLR2 knockout (KO) mice was similar to that in wild-type mice. In TLR4 KO and RAGE KO mice, exogenous HMGB1 did not affect ulcer healing and TNFα expression. Thus, we showed that HMGB1 is a complicating factor in the gastric ulcer healing process, which acts through TLR4 and RAGE to induce excessive inflammatory responses.
Strong in Vitro Synergy Between the Fusion Inhibitor T-20 and the CXCR4 Blocker AMD-3100 (2000)

Attachment and entry of HIV-1 into CD4 cells involve a series of events in which different viral envelope proteins interact with specific cell receptors, culminating in fusion of viral and cell membranes. AMD-3100 is a small molecule inhibitor of HIV-1 attachment to the CXCR4 chemokine receptor, and T-20 is a synthetic peptide corresponding to a region of HIV-1 gp41 that blocks fusion to cell membranes. To evaluate the interaction between agents acting at two different steps of the entry process, we conducted in vitro studies of the combination of T-20 and AMD-3100 against an X4 HIV-1 isolate. Single drugs or multiply diluted fixed ratio combinations of drugs were added to peripheral blood mononuclear cells infected with a clinical isolate, 14aPre. Drug interactions were evaluated using the median-effect principle and the combination index technique. The 50% inhibitory concentration (IC50) for T-20 was 0.10 microg/ml and for AMD-3100 was 0.19 microg/ml. Synergy was observed between T-20 and AMD-3100 and this increased with higher inhibitory concentrations, with combination indices ranging from 0.62 at IC50 to 0.02 at IC95. Whether these synergistic interactions translate into clinical benefit will need to be addressed in the context of clinical trials.
Techniques for investigation of an apparent outbreak of infections with Candida glabrata (1996)

A cluster of Candida glabrata isolates recovered from seven patients in an intensive care unit over a 10-week period were compared with a collection of isolates from six epidemiologically distinct outpatients and a reference strain by several DNA typing methods. Restriction enzyme analysis with HinII distinguished 13 strains from the 14 sources and was the method of choice. Pulsed-field gel electrophoresis and random amplification of polymorphic DNA both detected nine types from the 14 sources; however, the results of these two methods did not always correlate. These methods demonstrated that five of the seven patients had distinguishable strains and that cross-infection was unlikely.
Agriculture Commodity Arrival Prediction using Remote Sensing Data: Insights and Beyond (2019)

In developing countries like India agriculture plays an extremely important role in the lives of the population. In India, around 80\% of the population depend on agriculture or its by-products as the primary means for employment. Given large population dependency on agriculture, it becomes extremely important for the government to estimate market factors in advance and prepare for any deviation from those estimates. Commodity arrivals to market is an extremely important factor which is captured at district level throughout the country. Historical data and short-term prediction of important variables such as arrivals, prices, crop quality etc. for commodities are used by the government to take proactive steps and decide various policy measures. In this paper, we present a framework to work with short timeseries in conjunction with remote sensing data to predict future commodity arrivals. We deal with extremely high dimensional data which exceed the observation sizes by multiple orders of magnitude. We use cascaded layers of dimensionality reduction techniques combined with regularized regression models for prediction. We present results to predict arrivals to major markets and state wide prices for `Tur' (red gram) crop in Karnataka, India. Our model consistently beats popular ML techniques on many instances. Our model is scalable, time efficient and can be generalized to many other crops and regions. We draw multiple insights from the regression parameters, some of which are important aspects to consider when predicting more complex quantities such as prices in the future. We also combine the insights to generate important recommendations for different government organizations.
The Mount Warning Shield Volcano : a general geological and geomorphological study of the dissected shield (1964)

Acetylcholine (ACh) plays a key role in the transitions between the different phases of sleep: Slow-wave sleep requires low ACh concentrations in the brain, whereas rapid-eye-movement (REM) sleep is associated with high levels of ACh. Also, these phases of sleep are differentially sensitive to a number of endogenous neuropeptides and cytokines, including somatostatin, which has been shown to increase REM sleep without significantly affecting other phases. Here we report the cloning and initial characterization of cortistatin, a neuropeptide that exhibits strong structural similarity to somatostatin, although it is the product of a different gene. Administration of cortistatin depresses neuronal electrical activity but, unlike somatostatin, induces low-frequency waves in the cerebral cortex and antagonizes the effects of acetylcholine on hippocampal and cortical measures of excitability. This suggests a mechanism for cortical synchronization related to sleep.