gebhart/patrepeval huggingface dataset:
LAN/ISDN interconnect via frame relay (2003)

A method that allows efficient interconnection of IEEE 802 LANs (local area networks) and ISDNs (integrated services digital networks) is described. The approach builds on layer-2 connectivity, which assures high performance and transparency to the network layer in the attached stations. The proposed connectivity mechanism uses on the LAN side an extension on the IEEE bridge method, which links on the ISDN side into the frame relay as it is currently being defined by CCITT. The resulting cross-connectivity function is transparent to LAN as well as ISDN stations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Enhanced structural color generation in aluminum metamaterials coated with a thin polymer layer (2015)

A high-resolution and angle-insensitive structural color generation platform is demonstrated based on triple-layer aluminum-silica-aluminum metamaterials supporting surface plasmon resonances tunable across the entire visible spectrum. The color performances of the fabricated aluminum metamaterials can be strongly enhanced by coating a thin transparent polymer layer on top. The results show that the presence of the polymer layer induces a better impedance matching for the plasmonic resonances to the free space so that strong light absorption can be obtained, leading to the generation of pure colors in cyan, magenta, yellow and black (CMYK) with high color saturation.
Detecting and Understanding Online Advertising Fraud in the Wild (2020)

While the online advertisement is widely used on the web and on mobile applications, the monetary damages by advertising frauds (ad frauds) have become a severe problem. Countermeasures against ad frauds are evaded since they rely on noticeable features (e.g., burstiness of ad requests) that attackers can easily change. We propose an ad-fraud-detection method that leverages robust features against attacker evasion. We designed novel features on the basis of the statistics observed in an ad network calculated from a large amount of ad requests from legitimate users, such as the popularity of publisher websites and the tendencies of client environments. We assume that attackers cannot know of or manipulate these statistics and that features extracted from fraudulent ad requests tend to be outliers. These features are used to construct a machine-learning model for detecting fraudulent ad requests. We evaluated our proposed method by using ad-request logs observed within an actual ad network. The results revealed that our designed features improved the recall rate by 10% and had about 100,000-160,000 fewer false negatives per day than conventional features based on the burstiness of ad requests. In addition, by evaluating detection performance with long-term dataset, we confirmed that the proposed method is robust against performance degradation over time. Finally, we applied our proposed method to a large dataset constructed on an ad network and found several characteristics of the latest ad frauds in the wild, for example, a large amount of fraudulent ad requests is sent from cloud servers.
Compact dual-band antenna for wireless access point (2006)

A compact dual-band printed antenna covering the 2.4 GHz (2400–2485 MHz) and 5.2 GHz (5150–5350 MHz) WLAN bands is presented. The experimental analysis shows a 2:1 VSWR bandwidth of up to 32 and 8% for 2.4 and 5.2 GHz, respectively. The measured radiation patterns are nearly omnidirectional, with moderate gain in both the WLAN bands.
Sol-Gel Synthesis and Antioxidant Properties of Yttrium Oxide Nanocrystallites Incorporating P-123 (2014)

Yttrium oxide (Y₂O₃) nanocrystallites were synthesized by mean of a sol-gel method using two different precursors. Raw materials used were yttrium nitrate and yttrium chloride, in methanol. In order to promote oxygen vacancies, P-123 poloxamer was incorporated. Synthesized systems were heat-treated at temperatures from 700 °C to 900 °C. Systems at 900 °C were prepared in the presence and absence of P-123 using different molar ratios (P-123:Y = 1:1 and 2:1). Fourier transform infrared spectroscopy (FTIR) results revealed a characteristic absorption band of Y-O vibrations typical of Y₂O₃ matrix. The structural phase was analyzed by X-ray diffraction (XRD), showing the characteristic cubic phase in all systems. The diffraction peak that presented the major intensity corresponded to the sample prepared from yttrium chloride incorporating P-123 in a molar ratio of P-123:Y = 2:1 at 900 °C. Crystallites sizes were determined by Scherrer equation as between 21 nm and 32 nm. Antioxidant properties were estimated by 2,2-diphenyl-1-picrylhydrazyl (DPPH•) assays; the results are discussed.
Three-Dimensional Feature Extraction. (1983)

Abstract : Range images offer a significant advantages over passive reflectance images because they preserve the 3-D information of the scene viewed from the sensor. Therefore, range data is becoming an increasingly important source of information for a variety of applications including 3-D target classification, autonomous vehicles, and robot vision. This research is part of an effort to develop a 3-d object recognition system for vehicle objects in air-to-ground laser range imagery. The full system includes image feature extraction, object modeling, model-driven prediction, and feature to model matching. This paper presents several three-dimensional feature extraction techniques for use on laser range imagery. These include object-ground segmentation, projection image generation from range data, and 3-D physical edge detection. We emphasize extracting 3-D physical features of the object from 3-D range data without restricting ourselves in a sensor-centered range image format. The object-ground segmentation and projection image generation techniques extract global object features from range data, and are useful for object orientation estimation and major structures identification. The 3-d physical edge detector directly calculates the physical angle of the object surface. It is not only useful for physical edge (convex, concave, occluding) detection, but also provides useful information for extracting planar and curved surfaces.
Write Margin Improvement in Bit Patterned Media With Inclined Anisotropy at High Areal Densities (2011)

Bit patterned media with inclined anisotropy were proposed along with media design with a higher saturation magnetization and a small thickness for the dot. Inclination of the anisotropy axis was found to reduce broadened switching field distribution of the media caused by the magnetostatic interaction between the dots. Recording simulation at an areal density of 2.6 Tbit/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> using a write field of a shielded planar head exhibited substantially increased write shift margins of 6.5 nm and 10 nm in down- and cross track directions, respectively, for the media with inclined anisotropy when the anisotropy dispersion of the media was as small as 2%. Recording density was expected to be increased beyond 4 Tbit/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> for the media with additional exchange coupling between the dots.
Synthesis and 5HT-receptors affinity of some 4-phenylquinoline derivatives. (1989)

The synthesis of a series of 4-phenylquinolines with substituents in 2,3 and 6-position of the quinoline nucleus is described. Serotoninergic activity towards 5HT1A, 5HT1B, 5HT2, 5HT1A + B receptors and the 5-HT-uptake site was also studied.
Analysing communication requirements for crowd sourced backend generation of HD Maps used in automated driving (2018)

Highly automated vehicles rely on high-definition maps to ensure both safety and comfort of their passengers while driving. The maps provide a centimetre-accurate representation of the surrounding infrastructure to the car and ease tasks like localisation and object recognition by providing comparable reference material. Maintaining the maps with updates for the current traffic situation (e.g.traffic jams or construction work) is a challenging task. In the German government-funded research project Cooperative Highly Automated Driving (Ko-HAF) it is investigated to what extend vehicle sensors can be used to update these kinds of maps. In this work we present our obtained results and investigate the requirements for the cellular network infrastructure required for highly automated driving. To the best of our knowledge this work is one of the first that provides this correlation between data requirements and network infrastructure capabilities.
Radiofrequency current directed across the mitral anulus with a bipolar epicardial-endocardial catheter electrode configuration in dogs. (1988)

This study tested the capability of low-power radiofrequency current delivered through a bipolar "epicardial-endocardial" catheter electrode configuration to produce discrete epicardial left atrial (LA) and left ventricular (LV) necrosis adjacent to the mitral anulus for potential application in ablating left free-wall accessory atrioventricular pathways. In 15 anesthetized, closed-chest dogs, a 6F electrode catheter was inserted via the jugular vein into the coronary sinus (CS). A second catheter was inserted via the femoral artery into the left ventricle and positioned beneath the mitral valve, high against the anulus, and directly opposite the CS electrode. The LV tip electrode was positioned to record the largest LA potential to ensure proximity to the anulus. Thirty-four sites were tested (five anterior, 14 lateral, and 15 posterior). Radiofrequency current (continuous wave, 625 kHz) was delivered between the CS and LV electrodes at 37-55 V (median, 41 V) for 4-60 seconds (median, 20 seconds). Current ranged from 0.10 to 0.35 A (median, 0.18 A), resulting in power ranging from 4.3 to 19.2 W (median, 7.3 W) and total energy of 51-446 J (median, 152 J). Dogs were sacrificed 2-9 days later. The CS was grossly intact in all dogs and thrombosed in one dog. The circumflex artery was grossly normal in all dogs. Necrosis of a small segment of the arterial wall was found microscopically in one dog. Lesions were identified at 30 of the 34 sites. Twenty-two (73%) of the 30 lesions consisted of a cylindrical-shaped area of necrosis extending between the anulus and CS with diameter ranging from 2.1 to 15.0 mm (median, 4.0 mm). Atrial and ventricular epicardial necrosis extended 0-7.0 mm (median, 2.5 mm) and 0-6.8 mm (median, 2.6 mm) beyond the anulus, respectively. At the remaining eight (27%) sites, little or no epicardial injury occurred, possibly because of downward displacement of LV electrode (four sites) or positioning of LV electrode within a trabecular recess (four sites). We conclude that 1) radiofrequency current delivered between CS and LV produced, at 22 (65%) of 34 sites, LA and LV necrosis adjacent to the anulus without rupture of the CS and that 2) large, sharp LA potentials help identify an optimal anular location of LV electrode. This technique may have clinical usefulness for ablating left free-wall accessory atrioventricular connections.
Image Captioning with Deep Bidirectional LSTMs and Multi-Task Learning (2018)

Generating a novel and descriptive caption of an image is drawing increasing interests in computer vision, natural language processing, and multimedia communities. In this work, we propose an end-to-end trainable deep bidirectional LSTM (Bi-LSTM (Long Short-Term Memory)) model to address the problem. By combining a deep convolutional neural network (CNN) and two separate LSTM networks, our model is capable of learning long-term visual-language interactions by making use of history and future context information at high-level semantic space. We also explore deep multimodal bidirectional models, in which we increase the depth of nonlinearity transition in different ways to learn hierarchical visual-language embeddings. Data augmentation techniques such as multi-crop, multi-scale, and vertical mirror are proposed to prevent overfitting in training deep models. To understand how our models “translate” image to sentence, we visualize and qualitatively analyze the evolution of Bi-LSTM internal states over time. The effectiveness and generality of proposed models are evaluated on four benchmark datasets: Flickr8K, Flickr30K, MSCOCO, and Pascal1K datasets. We demonstrate that Bi-LSTM models achieve highly competitive performance on both caption generation and image-sentence retrieval even without integrating an additional mechanism (e.g., object detection, attention model). Our experiments also prove that multi-task learning is beneficial to increase model generality and gain performance. We also demonstrate the performance of transfer learning of the Bi-LSTM model significantly outperforms previous methods on the Pascal1K dataset.
Large-Scale Synthesis of Long Double-Walled Carbon Nanotubes (2004)

Long double-walled carbon nanotubes (DWNTs) could be synthesized in a production rate of about 0.5 g per h by an improved catalytic chemical vapor deposition method using xylene solution as carbon feedstock. The argon flowing rate affects the growth of DWNTs sensitively. Raman spectra and HRTEM images show that the DWNTs having inner diameters of about 1.0−2.0 nm dominate in the samples.
Woman of the world (2005)

Dame Sheila Quinn, whose new book describes a lifetime of globetrotting, explains to Alison Moore how she is as busy as ever working for nursing
Economic relations of the United Kingdom with developing countries (1979)

The United Kingdom has had close relations with a number of developing countries through its British Commonwealth ties, but since it joined the Common Market in 1973, trade relations with the developing countries have become increasingly influenced by EEC policies. The latter mostly affected agricultural imports where trade diversion clearly has occurred. The share of developing countries in total exports of the United Kingdom has increased from 28.3% in 1968 to 30.2% in 1977 while the share of exports from developing countries in total imports of the United Kingdom has declined from 28.2% to 24.9% during the same period. In manufactures the share of developing countries in exports of the United Kingdom has increased from 29.9% to 32.8% in 1977. Chapter II of this report discusses the comparative performance of the British economy. Chapter III is concerned with the trade relations with developing countries, and Chapter IV considers financial flows of the United Kingdom to developing countries.
THE ROLE OF THE AGING TEMPERATURE ON THE SELF HEALING KINETICS IN AN UNDERAGED AA2024 ALUMINIUM ALLOY (2007)

Tel: +31 15 27 86320 Fax: +31 15 27 88303 e-mail: s.m.hautakangas@tudelft.nl Positron lifetime spectroscopy has been applied to quantify the restoration of free volume defects (vacancies, dislocations and nano-cracks) formed during plastic deformation of a commercial aluminium AA2024 alloy in an underaged (UA) state. Plastic deformation of an underaged aluminium alloy increases the average positron lifetime from an initial value of 182 ps to 209 ps. After deformation the positron lifetime value decreases with time and approaches its initial value at a rate depending on the aging temperature. The results show that the nano-structure of an underaged material after deformation and aging at 65-70 °C has the same positron annihilation (PA) characteristics as the material before deformation. From this we conclude that the solute in the matrix is capable of closing the open volume defects caused by plastic deformation. The healing process seems to be a thermally activated process with an activation energy of 0.91eV, which corresponds to that of Cu and Mg pipe diffusion in Al matrix.
Theoretical and experimental investigation of factors affecting precision in molecular absorption spectrophotometry (1975)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical and experimental investigation of factors affecting precision in molecular absorption spectrophotometryL. D. Rothman, S. R. Crouch, and J. D. IngleCite this: Anal. Chem. 1975, 47, 8, 1226–1233Publication Date (Print):July 1, 1975Publication History Published online1 May 2002Published inissue 1 July 1975https://pubs.acs.org/doi/10.1021/ac60358a029https://doi.org/10.1021/ac60358a029research-articleACS PublicationsRequest reuse permissionsArticle Views790Altmetric-Citations58LEARN 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 optionsGet e-Alertsclose Get e-Alerts
Recent advances in the molecular biology of nucleoside transporters of mammalian cells (1998)

Nucleosides are hydrophilic molecules and require specialized transport proteins for permeation of cell membranes. There are two types of nucleoside transport processes: equilibrative bidirectional processes driven by chemical gradients and inwardly directed concentrative processes driven by the sodium electrochemical gradient. The equilibrative nucleoside transport processes (es, ei) are found in most mammalian cell types, whereas the concentrative nucleoside transport processes (cit, cif, cib, csg, cs) are present primarily in specialized epithelia. Using a variety of cloning strategies and functional expression in oocytes of Xenopus laevis, we have isolated and characterized cDNAs encoding the rat and human nucleoside transporter proteins of the four major nucleoside transport processes of mammalian cells (es, ei, cit, cif). From the sequence relationships of these proteins with each other and with sequences in the public data bases, we have concluded that the equilibrative and concentrative nucleoside transport processes are mediated by members of two previously unrecognized groups of integral membrane proteins, which we have designated the equilibrative nucleoside transporter (ENT) and the concentrative nucleoside transporter (CNT) protein families. This review summarizes the current state of knowledge in the molecular biology of the ENT and CNT protein families, focusing on the characteristics of the four human (h) and rat (r) nucleoside transport proteins (r/hENT1, r/hENT2, r/hCNT1, r/hCNT2).Key words: nucleoside transporter, equilibrative, concentrative, ENT, CNT.
Modelling of healthy and faulty three phase induction motor in LabVIEW (2016)

Induction machines are undoubtedly a crucial part of the industry and so they need to function in a stable and secured manner. Negligence in maintenance or careless operation of the induction machines can induce faults in the machines resulting in failures and ultimately giving rise to loss of funds and resources. In this paper, three phase induction motor model has been designed in LabVIEW. It has been modeled in such a way that it can be simulated as an ideal or healthy motor as well as a faulty motor having faults such a stator winding fault, rotor fault and bearing or eccentricity fault. It can be simulated for various ratings of induction motors and the values of current, voltages and different waveforms associated with the faults can be obtained which can be used in any application where faults in induction motors need to be detected.
Improving write operations in MLC phase change memory (2012)

Phase change memory (PCM) recently has emerged as a promising technology to meet the fast growing demand for large capacity memory in modern computer systems. In particular, multi-level cell (MLC) PCM that stores multiple bits in a single cell, offers high density with low per-byte fabrication cost. However, despite many advantages, such as good scalability and low leakage, PCM suffers from exceptionally slow write operations, which makes it challenging to be integrated in the memory hierarchy. In this paper, we propose architectural innovations to improve the access time of MLC PCM. Due to cell process variation, composition fluctuation and the relatively small differences among resistance levels, MLC PCM typically employs an iterative write scheme to achieve precise control, which suffers from large write access latency. To address this issue, we propose write truncation (WT) to reduce the number of write iterations with the assistance of an extra error correction code (ECC). We also propose form switch (FS) to reduce the storage overhead of the ECC. By storing highly compressible lines in SLC form, FS improves read latency as well. Our experimental results show that WT and FS improve the effective write/read latency by 57%/28% respectively, and achieve 26% performance improvement over the state of the art.
Specific attraction to and infection of cotton root cap cells by zoospores of <i>Pythium dissotocum</i> (1989)

Root cap cells of two cotton species (Gossypium barbadense L. and G. hirsutum L.) elicited a specific chemotactic response in zoospores of Pythium dissotocum. When roots of cotton seedlings were placed into a suspension of Pythium dissotocum zoospores, there was immediate attraction, accumulation, and encystment exclusively in the root cap region. Seedlings which attracted zoospores were killed within 24 h. Furthermore, root cap cells remained attractive when isolated nondestructively from the root and placed into a zoospore suspension; attraction, accumulation, and encystment on individual root cap cells occurred within seconds after contact. Penetration and death of isolated cells occurred within 15–30 min. After 30 min, approximately 25% of living cells were directly colonized by zoospores. Root cap cells killed by freezing or drying remained attractive but at a reduced level; approximately half as many killed cells as living cells were directly colonized by zoospores. The number of root cap cells directly colonized by zoospores did not increase with time. In contrast, zoospores of Pythium catenulatum that exhibited a chemotactic response to Agrostis palustris (Bentgrass) were not attracted to and did not infect cotton seedlings or isolated root cap cells.