gebhart/patrepeval huggingface dataset:
Conversion of complex contour line definitions into polygonal element mosaics (1978)

A simple algorithm is presented for processing complex contour arrangements to produce polygonal element mosaics which are suitable for line drawing and continuous tone display. The program proceeds by mapping adjacent contours onto the same unit square and, subject to ordering limitations, connecting nodes of one contour to their nearest neighbors in the other contour. While the mapping procedure provides a basis for branching decisions, highly ambiguous situations are resolved by user interaction. The program was designed to interface a contour definition of the components of a human brain. These brain data are a most complex definition and, as such, serve to illustrate both the capabilities and limitations of the procedures.
Characteristics of the Self-Quenching Streamer Mode in a Gas Counter (1984)

The characteristics of the electron avalanche of the self-quenching streamer mode in a cylindrical counter filled with an argon-methane-ethanol mixture were measured as functions of the concentration of ethanol (another quenching gas), the diameter of the anode wire and the incident X-ray energy. New systematics in generation of the streamer were obtained.
Fluorometholone acetate: clinical evaluation in the treatment of external ocular inflammation. (1984)

Separate, randomized, double-masked clinical studies were conducted to determine the therapeutic efficacy of fluorometholone acetate, a new ophthalmic corticosteroid formulation, in suppressing external ocular inflammation (conjunctivitis, episcleritis, scleritis). Fluorometholone acetate 0.1% was compared to fluorometholone 0.1%, and the acetate formulation was found to be significantly (p = 0.03) more effective. Fluorometholone acetate 0.1% also was compared to prednisolone acetate 1.0%; there was no significant difference (p = 0.49) between these two corticosteroids in their ability to suppress external ocular inflammation. It appears that alteration of fluorometholone from its alcohol base to its acetate derivative changes the drug from a moderately effective to a highly effective anti-inflammatory agent.
Cryptographically Enforced Permissions for Fully Decentralized File Systems (2010)

Distributed file systems nowadays work well in many ways. They provide efficient solutions, for example, to distribute data among a global team. But most systems do not address the complex subject of secure user and group management. The systems that do, usually offer only a very limited subset of access permissions that is incompatible to the permissions usually used in Unix-like systems. In this paper, we propose a new system for user and group management, which cryptographically enforces access permissions in fully decentralized file systems. Our proposal is twofold: an integrity verification algorithm checks the validity of the current file system state; a cryptographic data protection scheme, added on top of the integrity verification, preserves the privacy of the file system content. Except for signatures, our system uses symmetric cryptography only. It thus incurs only a reasonable cryptographic cost in the system.
A simplified balance factor based midpoint voltage deviation eliminating method for T-type three-level inverter (2016)

This paper proposes an improved midpoint potential balancing method that reduces deviation of DC capacitor voltages of T-type three-level inverter. In the proposed balancing strategy, the 60° coordinate is used to avoid sophisticated calculation of trigonometric function, and a simplified balance factor is set in each region of virtual space vector diagram. All values of the simplified balance factor are presented, making it successful to minimizing neutral point voltage deviation without complex judging condition in hybrid modulation. Simulation results are shown to verify the presented strategy.
Thin-Film Transistor Integration for Biomedical Imaging and AMOLED Displays (2008)

Thin film transistor (TFT) backplanes are being continuously researched for new applications such as active-matrix organic light emitting diode (AMOLED) displays, sensors, and x-ray imagers. However, the circuits implemented in presently available fabrication technologies including poly silicon (poly-Si), hydrogenated amorphous silicon (a-Si:H), and organic semiconductor, are prone to spatial and/or temporal non-uniformities.\nWhile current-programmed active matrix (AM) can tolerate mismatches and non-uniformity caused by aging, the long settling time is a significant limitation. Consequently, acceleration schemes are needed and are proposed to reduce the settling time to 20 µs. This technique is used in the development of a pixel circuit and system for biomedical imager and sensor. Here, a metal-insulator-semiconductor (MIS) capacitor is adopted for adjustment and boost of the circuit gain. Thus, the new pixel architecture supports multi-modality imaging for a wide range of applications with various input signal intensities. Also, for applications with lower current levels, a fast current-mode line driver is developed based on positive feedback which controls the effect of the parasitic capacitance. The measured settling time of a conventional current source is around 2 ms for a 100-nA input current and 200-pF parasitic capacitance whereas it is less than 4 μs for the driver presented here. \nFor displays needed in mobile devices such as cell phones and DVD players, another new driving scheme is devised that provides for a high temporal stability, low-power consumption, high tolerance of temperature variations, and high resolution. The performance of the new driving scheme is demonstrated in a 9-inch fabricated display intended for DVD players. Also, a multi-modal imager pixel circuit is developed using this technique to provide for gain-adjustment capability. Here, the readout operation is not destructive, enabling the use of low-cost readout circuitry and noise reduction techniques.\nIn addition, a highly stable and reliable driving scheme, based on step calibration is introduced for high precision displays and imagers. This scheme takes advantage of the slow aging of the electronics in the backplane to simplify the drive electronics. The other attractive features of this newly developed driving scheme are its simplicity, low-power consumption, and fast programming critical for implementation of large-area and high-resolution active matrix arrays for high precision.
High-performance a-Si:H thin-film transistor using lightly doped channel (1991)

The fabrication of amorphous silicon thin-film transistors (TFTs) using a lightly phosphorus-doped channel is discussed. The transistors achieve an on-off current ratio exceeding six orders of magnitude and a field effect mobility of 0.4 cm/sup 2//V-s. These characteristics are found to be much better than those using an undoped channel with the same device structure. It is found that the incorporation of phosphorus in the channel can compensate the interface states and improve the transconductance of the TFT. It is shown that the fabrication of a depletion-mode TFT is fully compatible with the conventional enhancement-mode TFT process.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Wideband object identification with rectangular wave chirp excitation (2009)

Using of chirp-type excitations for the fast broadband measurement and estimation of the complex bioimpedance is discussed in this paper. The proposed method includes cross-correlation of the excitation (reference) and response signals with a subsequent Fourier analysis of the obtained correlation function. It is shown that the phase response can be especially convenient for estimating of the state of a biological object and for monitoring the processes taking place in it. The results of this study stand for elaborating the respective off-chip and on-chip measurement devices with rectangular wave chirp pulses as excitation.
Small-Molecule Inhibitors of Dengue-Virus Entry (2012)

Flavivirus envelope protein (E) mediates membrane fusion and viral entry from endosomes. A low-pH induced, dimer-to-trimer rearrangement and reconfiguration of the membrane-proximal "stem" of the E ectodomain draw together the viral and cellular membranes. We found stem-derived peptides from dengue virus (DV) bind stem-less E trimer and mimic the stem-reconfiguration step in the fusion pathway. We adapted this experiment as a high-throughput screen for small molecules that block peptide binding and thus may inhibit viral entry. A compound identified in this screen, 1662G07, and a number of its analogs reversibly inhibit DV infectivity. They do so by binding the prefusion, dimeric E on the virion surface, before adsorption to a cell. They also block viral fusion with liposomes. Structure-activity relationship studies have led to analogs with submicromolar IC₉₀s against DV2, and certain analogs are active against DV serotypes 1,2, and 4. The compounds do not inhibit the closely related Kunjin virus. We propose that they bind in a previously identified, E-protein pocket, exposed on the virion surface and although this pocket is closed in the postfusion trimer, its mouth is fully accessible. Examination of the E-trimer coordinates (PDB 1OK8) shows that conformational fluctuations around the hinge could open the pocket without dissociating the trimer or otherwise generating molecular collisions. We propose that compounds such as 1662G07 trap the sE trimer in a "pocket-open" state, which has lost affinity for the stem peptide and cannot support the final "zipping up" of the stem.
A self-organized reuse-partitioning dynamic channel assignment scheme with quality based power control (2002)

High spectrum efficiency is promised by reuse partitioning in a cellular system. We propose an improved algorithm for self-organized reuse partitioning (SORP), a distributed dynamic channel assignment scheme, in order to obviate the need for broadcasting transmit power level information of each mobile terminal. The concept of the improved scheme is simple: a mobile terminal with low transmit power uses a low numbered channel throughout the system. Reuse partitioning can be achieved owing to such a channel segmentation. The algorithm is designed to realize the channel segmentation without the broadcasting of the transmit power level. Computer simulation results show that a high capacity and short delay time in finding an appropriate channel can be obtained. Furthermore, a higher capacity can be obtained by introducing quality based power control into this algorithm.
Direct self-assembly of Fe₂O₃/reduced graphene oxide nanocomposite for high-performance lithium-ion batteries (2015)

In this study, Fe₂O₃/reduced graphene oxide (rGO) nanocomposites were prepared using a direct self-assembly of oppositely charged Fe₂O₃ nanoparticles (NPs) and graphene oxide (GO) sheets, followed with a low-temperature hydrothermal reduction process. The characterization of the nanocomposite shows that Fe₂O₃ NPs with an average diameter of about 9 nm are uniformly distributed on well-exfoliated rGO layers. The nanocomposites show a high iron oxide mass loading of 63%. The electrical conductivity of the composite was significantly enhanced by about 6 orders of magnitude in comparison to pure Fe₂O₃ NPs. The characterization of the composite as an anode material for lithium-ion batteries (LIBs) demonstrated a strong positive synergistic effect with respect to its electrochemical performance. Fe₂O₃/rGO exhibited a capacity of 600 mA h g⁻¹ at a current density of 0.1 A g⁻¹, and even more than 180 mA h g⁻¹ at 10 A g⁻¹ (approx. 17 C), indicating its superior high-rate performance. In addition, it features high efficiency at high rates and very good cyclic stability over a long cycle life of more than 550 cycles.
丹戎布拉国立大学汉语专业2014届学生 使用“刚”、“刚刚” 和 “刚才”的偏误分析 (2017)

摘要 近义词是指意思相近的词语。汉语中的近义词有很多，其中一个是“刚”、“刚刚”和“刚才”这三个词。虽然这三个词的意义相近，而在用法上有所不同。所以对我们作为第二语言的学习者来说，对这些近义词的理解是极其复杂的。笔者调查丹戎布拉国立大学师范教育学院汉语专业2014届学生，考察他们使用近义词“刚”、“刚刚”和 “刚才”的偏误，并对考察结果进行了分析。通过分析总结出丹大2014届学生使用“刚”、“刚刚”和“刚才”的正确率和偏误率。另外也发现他们出错的偏误类型是误代偏误和错序偏误，并找出他们偏误的原因：一是母语的影响、二是目的语的影响、三是学生对“刚”、“刚刚”和“刚才”的知识不够。进而针对这些问题提出几点教学建议。 关键词 : 刚，刚刚和刚才的偏误分析 Abstract Synonym is refers to the words of similar meaning. There are many synonym in Chinese, one of them is “gang”, ”gang gang” and “gang cai”. Although the meaning of these three words is similar, but in each has a different usage points. So for us as a second language learner, to understand of these synonym is the one of the difficult points. The writer analysis the students of 2014 class in Chinese language department tanjungpura university errors in using synonym of “gang”, “gang gang” and “gang cai”. The survey result of stundents of 2014 class in chinese language department tanjungpura university errors in using “gang”, “gang gang” and “gang cai”. In addition also discover the summarize commonly seen types of mistakes, investigate the causes of errors and after that confront them to raise countermeasures. Keywords:  Errors Analysis of Gang, Gang Gang and Gang Cai
Synthesis and evaluation of substituted aryl thiazolidin-4-ones for analgesic and anti-inflammatory activities (2012)

A series of substituted aryl thiazolidin-4-ones (4a1-a9 - 4e1-e9) were synthesized by the reaction of substituted schiff’s bases (3a1-a9 – 3e1-e9) with thioglycolic acid in presence of ethanol. The schiff’s bases (3a1-a9 - 3e1-e9) were inturn obtained by the condensation of substituted benzohydrazides (2a-e) with substituted aryl aldehydes in ethanol and the substituted benzohydrazides were prepared by condensing benzoyl chlorides (1a-e) with hydrazine hydrate in methnol. The structures of the synthesized compounds were characterized by FT-IR, 1H-NMR spectral analysis. Some of the synthesized compounds were screened for their anti-inflammatory, analgesic activities and the biological results revealed that in general substituted aryl thiazolidin-4-ones afforded good protection against inflammation and pain. All the test compounds exhibited significant anti-inflammatory and analgesic activities.
Cross-Domain Fashion Image Retrieval (2018)

Cross domain image retrieval is a challenging task that implies matching images from one domain to their pairs from another domain. In this paper we focus on fashion image retrieval, which involves matching an image of a fashion item taken by users, to the images of the same item taken in controlled condition, usually by professional photographer. When facing this problem, we have different products in train and test time, and we use triplet loss to train the network. We stress the importance of proper training of simple architecture, as well as adapting general models to the specific task.
Metamaterial electro-optic switch of nanoscale thickness (2010)

We demonstrate an innovative concept for nanoscale electro-optic switching. It exploits the frequency shift of a narrow-band Fano resonance mode in a plasmonic planar metamaterial induced by a change in the dielectric properties of an adjacent chalcogenide glass layer. An electrically stimulated transition between amorphous and crystalline forms of the glass brings about a 150 nm shift in the near-infrared resonance providing transmission modulation with a contrast ratio of 4:1 in a device of subwavelength thickness.
Gastrointestinal Norovirus Infection Associated With Exacerbation of Inflammatory Bowel Disease (2009)

We conclude that norovirus may be associated with exacerbations of IBD. When norovirus accompanies IBD it is more likely to be associated with hematochezia than when the infection occurs in the absence of IBD.
Autocrine and paracrine roles for growth factors in melanoma. (1994)

Distinct biologic and histopathological features characterizing each stage of tumor progression toward a more aggressive phenotype have been defined in the human melanocytic cell system. One of the most significant aspects accompanying melanoma progression is the acquisition of growth autonomy and the expression of multiple growth factors and receptors by tumor cells but not by normal melanocytes. Among the growth factors produced by melanoma cells, bFGF, TGF-alpha, TGF-beta, PDGF A and B chains, MGSA, and interleukins have been extensively characterized. The complex signaling networks mediated by these melanoma-derived factors are responsible for the autocrine growth stimulation of melanoma cells and for paracrine actions of growth factors in the generation of a microenvironment favorable for tumor survival and invasion. bFGF is the best characterized candidate for autocrine stimulation in melanoma cells. In addition, bFGF and other growth factors not apparently involved in autocrine loops have been shown to activate neighboring stromal cells and to participate in angiogenesis, fibrous stroma formation, activation of proteolytic enzymes produced by normal cells, promotion of adhesive interactions between tumor cells and extracellular matrix and endothelium, and suppression of local immunity. Experimental models that can account for the complex interactions between normal and tumor cells are needed to further explore the roles of autocrine and paracrine actions of growth factors and their receptors in melanoma development and progression.
A Collaborative Bluetooth-Based Approach to Localization of Mobile Devices (2012)

In this paper we present a collaborative Bluetooth localization method, which aggregates the location information about Bluetooth devices that is provided by multiple mobile devices. The method aims to take advantage of an enhanced version of the KNN algorithm in which the location of a mobile devic
Observation of cw squeezed light at 1550 nm (2009)

We report on the generation of cw squeezed vacuum states of light at the telecommunication wavelength of 1550 nm. The squeezed vacuum states were produced by type I optical parametric amplification in a standing-wave cavity built around a periodically poled potassium titanyl phosphate crystal. A nonclassical noise reduction of 5.3 dB below the shot noise was observed by means of balanced homodyne detection.
Biomass Production of ‘Alamo’ Switchgrass in Response to Nitrogen, Phosphorus, and Row Spacing (2001)

Management practices for biomass production of bioenergy grasses may differ from management for forage. Our objective was to determine the yield and stand responses of ‘Alamo’ switchgrass ( Panicum virgatum L.) to N and P fertilization as affected by row spacing. A combination of five rates each of N and P were applied to plots during 1992 to 1998 at Stephenville, TX and 1993 to 1995 at Beeville, TX. Three row‐spacing treatments were applied as subplots. Biomass production was determined each year with a single harvest in late summer. Tiller density and tiller mass were measured during 1993 to 1996 at Stephenville. Biomass production was not influenced by the addition of P. Biomass production response to N at Beeville was greater in narrow rows than wide rows during the establishment year only. Biomass production responses to N were quadratic in 5 of 7 yr at Stephenville and linear at Beeville. A maximum yield of 22.5 Mg ha −1 occurred during 1995 at Stephenville at 168 kg N ha −1 . Lodging occurred at both locations but only at the 224 kg N ha −1 rate. Tiller density and mass increased as row width increased. Tiller mass also increased with increasing N fertility at Stephenville. This response was more important in determining biomass production than was tiller density. Average biomass production at 168 kg N ha −1 yr −1 was 14.5 and 10.7 Mg ha −1 yr −1 at Stephenville and Beeville, respectively. Biomass production without applied N tended to decline over the years. Our data indicated that switchgrass biomass production is sustainable at Stephenville only with the application of at least 168 kg N ha −1 yr −1 , but P application and row spacing are not crucial.
Nemo-enabled localized mobility support for internet access in automotive scenarios (2009)

This article surveys the major existing approaches and proposes a novel architecture to support mobile networks in network-based, localized mobility domains. Our architecture enables conventional terminals without mobility support to obtain connectivity either from fixed locations or mobile platforms (e.g., vehicles) and move between them, while keeping their ongoing sessions. This functionality offers broadband Internet access in automotive scenarios such as public transportation systems, where users spend time both in vehicles and at stations. The key advantage of our proposal, as compared with current alternatives, is that the described mobile functionality is provided to conventional IP devices that lack mobility functionality. We also performed an experimental evaluation of our proposal that shows that our architecture improves the quality perceived by the end users.
Leveraging Expertise to Support Scientific Software Process Improvement Decisions (2014)

As the complexity of scientific software increases, scientists are often expected to be experts in their own domain as well as in the construction and maintenance of their software. To support this paradigm, numerous specialized approaches have emerged. Leveraging the underlying expertise and motivational factors that drive scientific software development practices, the authors are developing a hybrid scientific software process improvement framework (SciSPIF) to allow scientific software developers to "self-drive"' their SE process improvement activities according to their own goals. Here, the authors report on the strategy for designing and building SciSPIF and provide preliminary insights.
Deterministic signal associated with a random field (2013)

Stochastic fields do not generally possess a Fourier transform. This makes the second-order statistics calculation very difficult, as it requires solving a fourth-order stochastic wave equation. This problem was alleviated by Wolf who introduced the coherent mode decomposition and, as a result, space-frequency statistics propagation of wide-sense stationary fields. In this paper we show that if, in addition to wide-sense stationarity, the fields are also wide-sense statistically homogeneous, then monochromatic plane waves can be used as an eigenfunction basis for the cross spectral density. Furthermore, the eigenvalue associated with a plane wave, exp[i(k · r-ωt)], is given by the spatiotemporal power spectrum evaluated at the frequency (k, ω). We show that the second-order statistics of these fields is fully described by the spatiotemporal power spectrum, a real, positive function. Thus, the second-order statistics can be efficiently propagated in the wavevector-frequency representation using a new framework of deterministic signals associated with random fields. Analogous to the complex analytic signal representation of a field, the deterministic signal is a mathematical construct meant to simplify calculations. Specifically, the deterministic signal associated with a random field is defined such that it has the identical autocorrelation as the actual random field. Calculations for propagating spatial and temporal correlations are simplified greatly because one only needs to solve a deterministic wave equation of second order. We illustrate the power of the wavevector-frequency representation with calculations of spatial coherence in the far zone of an incoherent source, as well as coherence effects induced by biological tissues.