gebhart/patrepeval huggingface dataset:
Large scale terrain visualization using the restricted quadtree triangulation (1998)

Real-time rendering of triangulated surfaces has attracted growing interest in the last few years. However, interactive visualization of very large scale terrain data is still a problem for virtual reality systems. The graphics load has to be con trolled by an adaptive surface triangulation and by taking advantage of different levels of detail. Furthermore, the dynamic management of the visible scene requires efficient access to the terrain database. All components must interact smoothly and efficiently to arrive at a high-performance visualization system. We describe triangulation, scene management and data handling that overcome all problems. The triangulation model is based on the restricted quadtree triangula tion and extended to meet the different requirements. Moreover, we present new details of the restricted quadtree triangulation not mentioned previously in the lit erature. These include among others exact error calculation, progressive meshing, performance enhancements and spatial access.
Document Summarization with VHTM: Variational Hierarchical Topic-Aware Mechanism (2020)

Automatic text summarization focuses on distilling summary information from texts. This research field has been considerably explored over the past decades because of its significant role in many natural language processing tasks; however, two challenging issues block its further development: (1) how to yield a summarization model embedding topic inference rather than extending with a pre-trained one and (2) how to merge the latent topics into diverse granularity levels. In this study, we propose a variational hierarchical model to holistically address both issues, dubbed VHTM. Different from the previous work assisted by a pre-trained single-grained topic model, VHTM is the first attempt to jointly accomplish summarization with topic inference via variational encoder-decoder and merge topics into multi-grained levels through topic embedding and attention. Comprehensive experiments validate the superior performance of VHTM compared with the baselines, accompanying with semantically consistent topics.
From the Editor (2016)

This issue of Healthcare Quarterly tackles the challenge of improving care for multimorbid patients. Few health systems across Canada (or elsewhere) are designed to provide integrated, coordinated and high quality care for the complex patients who need it.
Automatic speaker independent alignment of continuous speech with its phonetic transcription using a hidden Markov model (2003)

A way is presented to time-aligned phonetic transcriptions with an acoustic speech waveform using hidden Markov models defined by the transcriptions. Given an utterance of speech and its phonetic transcription, the algorithm will yield the starting and ending times of all the phonemes in the transcription, relative to the start of the utterance. The probabilities for the model are obtained from phoneme duration probabilities and feature probabilities for a few coarse phoneme classes. Because of the coarse classes, the method is speaker-independent. The alignment is accomplished using the Viterbi algorithm. An efficient way of implementing the Viterbi algorithm is given. By using single word transcriptions, the method can be used to detect words in continuous speech, which allows words to be searched for using only their phonetic representations. Two different hidden Markov models (HMM) were used, one with discrete observation symbols and one with continuous observation vectors. The continuous model works better, but the discrete one works faster.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Surveillance Scene Classification Method Simulating Visual Perception Mechanisms (2015)

Surveillance scene classification can enhance the accuracy and adaptability of smart video surveillance.In the paper,a surveillance scene classification method simulating human visual perception mechanisms is proposed.First,simulating the spatial scale and orientation perception mechanisms of simple cells in human visual cortex,2Ddouble-density dual-tree complex wavelet transform is adopted to decompose a surveillance scene image into a series of wavelet subband images in different scales and orientations.Then simulating the statistical feature perception mechanisms of complex cell structures in the visual cortex,a statistical feature extraction method based on wavelet co-occurrence matrix is employed to generate the feature vector of the surveillance scene from the wavelet subband images.At last,a surveillance scene classifier is trained by a support vector machine using the feature vectors of different types of surveillance scene images in a dataset.The experimental results show that the proposed method is more effective than generic nature scene classification methods for visual surveillance scenes,which contain plenty of spatial geometric structure features.
Broadening of the second-harmonic phase-matching bandwidth in type II periodically poled KTP (2005)

We have theoretically demonstrated type II broadband second-harmonic generation (SHG) based on a quasi-phase-matching (QPM) configuration in periodically poled KTP (PPKTP). The wavelength dependence of QPM grating periods at different temperatures of 5 degrees C, 25 degrees C, and 45 degrees C is calculated with the crystal length of 1 cm. We find a very wide bandwidth, as large as 42.6 nm, of fundamental wavelength of 1.58 microm at the telecommunication band with the QPM period of 48.9 microm at 25 degrees C. The corresponding bandwidths of incident angle and temperature are found to be 4.24 degrees and 14.8 degrees C, respectively. The comparison among PPKTP, periodically poled lithium niobate (PPLN), and MgO:PPLN reveals the unique performance of PPKTP in the broadband SHG.
The Melanin Binding of Drugs and Its Implications (1984)

(1984). The Melanin Binding of Drugs and Its Implications. Drug Metabolism Reviews: Vol. 15, No. 5-6, pp. 1183-1212.
Novel Process Windows – A Contribution to More Sustainable Chemistry? (2009)

Abstract Sustainable chemistry is the attempt to design chemical products and processes that reduce or eliminate the use and generation of hazardous substances, minimize waste and energy consumption, favor renewable resources and integrate aspects of recycling. Some technical approaches are reviewed, e.g., renewable resources, catalytic processes, novel solvent systems, and process intensification. The application of micro‐fluidic components and chemical reaction under novel process regimes, i.e., so called “novel process windows” are discussed.
Nuclear p21-Activated Kinase 1 in Breast Cancer Packs Off Tamoxifen Sensitivity (2006)

There is significant clinical interest in the factors that influence the development of tamoxifen resistance in estrogen receptor-alpha (ER-alpha)-positive breast cancers. Recent studies suggest that in ER-positive breast tumor cells, elevated protein levels, and in particular, nuclear localization of p21-activated kinase 1 (PAK1), is associated with the progressive limitation of tamoxifen sensitivity. These phenotypic effects of PAK1 in model systems are mechanistically linked with the ability of PAK1 to phosphorylate ER-alpha on serine 305 and subsequent secondary activation of serine 118. These findings prompt further investigation of how nuclear signaling by PAK1 may affect estrogen's action and whether tamoxifen resistance might be prevented or reversed by PAK1 inhibition.
Mechanisms of Salinity Tolerance in Plants (1988)

The mechanisms of salt stress response and tolerance have eluded definition despite reasonable success in defining their physiological manifestations. In this review, we consider the integrated salt metabolism of plants, essentially as a problem in meganutrient physiology. Two critical aspects of cellular and organismal metabolism are given particular attention-those involved in the control and integration of Na(+) acquisition and allocation in plants and those involved in readjustment of other aspects of metabolism, especially those involving carbon as a resource.
The Siluro-Devonian Boundary (1965)

Abstract The positioning of the Siluro-Devonian boundary is reviewed in the light of recent studies in both shelly and graptolitic facies in Europe and elsewhere. A case can be made for retaining the present position at the base of the Ludlow Bone Bed; but international opinion may demand a new standard section in the graptolitic facies, for example in Central Europe. In this event, it is suggested that a position at the base of the Monograptus uniformis Zone might prove the most widely satisfactory solution.
Sentiment Analysis for Web-based Big Data: A Survey (2017)

These days customers rely on the Web for the opinions on various products and services. Due to rapid increase of data availability in web, it is very difficult to manage these for an application. Again, these data are in heterogeneous formats as well as rapid changing in nature. Thus there is a need for an effective system to classify analyse web reviews as a big data analysis. This task of classifying and analyzing such collective web data together is known as opinion mining, and it is also known as sentiment analysis. Sentiment analysis is a very challenging and promising discipline which uses both intersection of information retrieval and computational linguistic techniques to deal with the reviews expressed in a source material. This work talks about the sentiment analysis process and focus on some machine learning techniques for sentiment classification and future challenges in opinion mining for big data.
Renal potassium channels: recent developments (2004)

The voltage-gated K+ channels are expressed in a variety of nephron segments and play a role in stabilization of cell membrane potential. With-no-lysine kinase and serum- and glucocorticoid-inducible kinase 1 have been shown to regulate ROMK1 channels. Protein tyrosine kinase mediates the effect of K+ intake on K+ secretion by stimulation of tyrosine phosphorylation of ROMK1 channels. The Ca-activated maxi K+ channel plays a role in flow-dependent K+ secretion in the distal nephron.
Extinction coefficients for a random dispersion of small stratified spheres and a random dispersion of their binary aggregates (1987)

The extinction coefficient of a low-density dispersion of scatterers has been calculated for the case of small stratified spheres and for that of their binary aggregates. Several cases of stratification have been considered as well as the case of spheres with a diffuse surface. The most interesting result is found for 50-Å spheres with a metallic coating, i.e., a dramatic shift of the resonance peaks as a function of the thickness of the coating. This suggests that by a suitable choice of the thickness of the coating one could in principle obtain a selective extinction in a large range of frequencies, although this effect might be attenuated when a considerable percentage of the spheres aggregates.
A new highly-linear highly-sensitive differential voltage-to-time converter circuit in CMOS 65nm technology (2015)

Time-Based Analog-to-Digital Converter (ADC), at scaled CMOS technology, plays a major role in designing Software Defined Radio (SDR) receivers as it manifests higher speed and lower power than conventional ADCs. Time-Based ADC includes a Voltage-to-Time converter (VTC) which converts the input voltage into a pulse delay, and a Time-to-Digital Converter which converts the pulse delay into a digital word. In this paper, a novel design of a differential VTC circuit is proposed which reports wider dynamic range and higher sensitivity than previously published VTC circuits in TSMC 65nm CMOS technology, with a supply voltage of 1.2V. This new VTC circuit operates with no sample and hold circuit for analog input frequencies up to 2.5 GHz with a linearity error of 3%.
The mesomorphic state (2004)

The term mesomorphism (exhibiting an intermediate form) is generally reserved for spontaneously ordered fluids – liquid crystals. Liquid crystals were discovered in 1888 and studied extensively in the early 1900s, but essentially remained a laboratory curiosity until the 1960s when electro-optic applications for these unusual fluids were initiated and prototypes of the now-commonplace liquid-crystal display (LCD) were first demonstrated. During this period of renewal of interest in liquid crystals, polymer scientists discovered that the unusually good mechanical properties of ultra-high-strength synthetic poly(arylamide) fibers were in part due to the fact that such fibers were spun from liquid-crystalline polymer solutions, e.g. DuPont's Kevlar® and Akzo's Twaron®. Consequently, macromolecular-design strategies for synthesizing new high-performance polymers and modeling polymer processing now routinely consider the potential role of the mesomorphic state. In this chapter we will try to develop an understanding of the liquid-crystalline state in materials of low molecular weight, since the author is convinced that this is a prerequisite for appreciating how mesomorphism affects high molecular weight polymers.
High performance RDMA-based MPI implementation over InfiniBand (2003)

Although InfiniBand Architecture is relatively new in the high performance computing area, it offers many features which help us to improve the performance of communication subsystems. One of these features is Remote Direct Memory Access (RDMA) operations. In this paper, we propose a new design of MPI over InfiniBand which brings the benefit of RDMA to not only large messages, but also small and control messages. We also achieve better scalability by exploiting application communication pattern and combining send/receive operations with RDMA operations. Our RDMA-based MPI implementation currently delivers a latency of 6.8 microseconds for small messages and a peak bandwidth of 871 Million Bytes (831 Mega Bytes) per second. Performance evaluation at the MPI level shows that for small messages, our RDMA-based design can reduce the latency by 24%, increase the bandwidth by over 104%, and reduce the host overhead by up to 22%. For large messages, we improve performance by reducing the time for transferring control messages. We have also shown that our new design is beneficial to MPI collective communication and NAS Parallel Benchmarks.
A COMPUTERIZED DATA BASE FOR FLOOD PREDICTION MODELING<sup>1</sup> (1987)

ABSTRACT: A computerized geographic information system (GIS) was created in support of data requirements by a hydrologic model designed to predict the runoff hydrograph from ungaged basins. Some geomorphologic characteristics (i.e., channel lengths) were manually measured from topographic maps, while other parameters such as drainage area and number of channels of a specified order, land use, and soil type were digitized and manipulated through use of the GIS. The model required the generation of an integrated Soil Conservation Service (SCS) curve number for the entire basin. To this end, soil associations and land use (generated from analysis of Landsat satellite data) were merged in the GIS to acquire a map representing SCS runoff curve numbers. The volume of runoff obtained from the Watershed Hydrology Simulation (WAHS) Model using this map was compared to the volume computed by hydrograph separation and found to be accurate within 19 percent error. To quantify the effect of changing land use on basin hydrology, the GIS was used to vary percentages from the drainage area from forest to bare soil. By changing the basin runoff curve numbers, significant changes in peak discharge were noted; however, the time to peak discharge remained essentially independent of change in area of land use. The GIS capability eliminated many of the more traditional manual phases of data input arid manipulation, thereby allowing researchers to concentrate on the development and calibration of the model and the interpretation of presumably more accurate results.
Death of biodiversity - the urgent need for global ecology (1998)

Given the rapidity of global environmental change and the growing ambiguity of the term ‘biodiversity’, I argue that there is an urgent need to move away from a narrow focus on biological diversity when considering anthropogenic impacts on the biosphere. Rather, an intellectually rigorous global ecology needs to be developed because planetary health requires management of entire ecosystems and the maintenance of biogeochemical cycles. This global perspective must be easily understood by all for it to achieve the same political status as ‘biodiversity’
Pollen morphology of Paeonia lactiflora Pallas and its germination (1996)

The experiment was conducted to determine pollen morphology of Chinese peony and its germination. The results were obtained as following ; Pollen shpae was usually large ellipse and the pol­len germination rate of Eui-seong Peony line was 71% which was lower than that of other Peony lines. In a bud, the pollen began to be observed on before flowering and as getting on for flowering time, normal pollen and germination rates were higher. The pollen germination and elongation beganat 30 minutes after incubation on artificial medium and were completed after . As the storage time went on, the pollen life span was shortened. The germination rate was 51% at 8 days-storage of room temperature. The germination rate was 48% ad 43% at 95 day-storage in and , respectively.
Guía para la prevención de acuerdo al grupo de edad en la consulta del niño sano (2012)

The pediatric consultation in the area of prevention and child care should provide parents and caregivers of children and adolescents, the attention that allows them to learn to anticipate the events that will be developing throughout the childhood and adolescent stages.
Naringenin Decreases Progression of Atherosclerosis by Improving Dyslipidemia in High-Fat–Fed Low-Density Lipoprotein Receptor–Null Mice (2010)

These in vivo studies demonstrate that the citrus flavonoid naringenin ameliorates the dyslipidemia in Western-fed low-density lipoprotein receptor-null mice, leading to decreased atherosclerosis; and suggests a potential therapeutic strategy for the hyperlipidemia and increased risk of atherosclerosis associated with insulin resistance.
Production of biosurfactant at mesophilic and thermophilic conditions by a strain of Bacillus subtilis (1998)

The ability of a Bacillus subtilis strain to grow and produce biosurfactant on different carbon and nitrogen sources under thermophilic conditions (45°C) was studied. The strain was able to reduce surface tension to 34 dynes cm−1 on 2% sucrose, and 32 dynes cm−1 on starch after 96 h of growth. The biosurfactant was stable at 100°C and within a wide pH range (3.0–11.0). Biosurfactant formation at mesophilic conditions (30°C) was also studied. The organism was able to produce the maximum amount of biosurfactant when nitrate ions were supplied as the nitrogen source. The potential application of the biosurfactant in oil recovery from desert oil fields, acidic and alkaline environments is demonstrated. The biosurfactant was identical to surfactin as confirmed by TLC and IR analysis.
Understanding Buck-Boost Power Stages in Switch Mode Power Supplies (2002)

A switching power supply consists of the power stage and the control circuit. The power stage performs the basic power conversion from the input voltage to the output voltage and includes switches and the output filter. This report addresses the buck-boost power stage only and does not cover control circuits. Detailed steady-state and small-signal analysis of the buck-boost power stage operating in continuous and discontinuous mode is presented. Variations in the standard buck-boost power stage and a discussion of power stage
The ability of primary care physicians to recognize the common dermatoses (1981)

• Although the balance between the number of primary care physicians and the number of specialists has been the subject of much attention, there has been little investigation of the quality and cost-effectiveness of various provider groups. To a large extent, dermatologic care is rendered by primary care physicians. In this study, the ability of primary care physicians to recognize the 20 most frequently encountered dermatoses was examined. Results indicate that, in comparison to dermatologists, primary care physicians are deficient in their ability to recognize common dermatoses. This study emphasizes the need for reevaluation of the training and, possibly, manner in which health care is delegated to personnel who deal with cutaneous disease. (<i>Arch Dermatol</i>1981;117:620-622)
Notice of Removal: A trust and reputation-based access control model for virtual organizations (2012)

Virtual organization (VO) is aimed to provide inter-organizational collaborations. Constructing a VO necessitates provision of security and access control requirements which cannot be satisfied using the traditional access control models. This is basically due to special features of VOs; such as temporality, unknown users, and diverse resources. In this paper, after expressing our assumption on a framework for VOs; the concept of organizational trust and reputation is used to establish an access control model for VOs. Each member of an organization inherits its organizational reputation. Resource providers announce the behavior of their interacting users to their organization manager. According to the received feedbacks, organization managers calculate the new amount of trust for each guest organization. Afterwards, the VO manager calculates organizations reputation by integrating trust values received from organizations. A selfish organization may use the other organization resources and not offer any resources to the requester organizations. To overcome this problem, we use single policy and authorization system for all members of the VO. By combining resource providers' policies, a unique policy for each shared resource in the VO will be formed. In VOs there are various and heterogeneous entities, to address this challenge and preparing common perception we suggest using ontology in the virtual organization. The advantage and usefulness of the proposed method is compared with the conventional approaches.
맥락적 패러다임에 기반한 교호적 상호작용의 교육적 함의 (2005)

이 연구는 발달연구 영역을 확장시킨 전생애 발달이론의 기본 관점인 맥락주의에 입각하여 인간발달연구에서의 쟁점 중 하나인 환경의 영향, 환경과 개체의 상호작용을 교호적 상호작용이라는 개념에 기초하여 탐색하고 상호작용에 대한 이러한 관점의 변화가 교육연구와 교육실천에 주는 함의를 논하였다. 학생에 대한 교사의 영향만을 가정하는 기존의 연구 틀에서 벗어나 교사가 학생들로 받는 영향이나 서로 주고받는 영향 등을 연구할 필요성을 제기하였으며 보다 확장하여 부모와 자녀의 상호작용, 사회 전반의 체제적 상호작용을 보는 관점의 변화까지 탐색하였다.
The enzymic conversion of coproporphyrinogen III into protoporphyrin IX (1964)

animals moving to high altitudes and thus the stimulation of uroporphyrinogen formation would be small. Nevertheless, it is known that increased haemopoiesis on acclimatization to high altitude is a slow process (cf. It is thus conceivable that the regulation by oxygen of haem biosynthesis, described above, may play a part in the changes in haemoprotein concentrations during respiratory adaptation in micro-organisms. Using Aerobacter aerogenes, Moss (1956) has shown that the maximum cell content of cytochrome a2 is obtained when the oxygen concentration in the bacterial culture during growth is 1 ,uM. Above and below this concentration the cytochrome a2 content of the cell falls off in a manner similar to that found for protohaem formation in vitro (Falk et al. 1959). SUMMARY