gebhart/patrepeval huggingface dataset:
Fast environment extraction for lighting and occlusion of virtual objects in real scenes (2010)

Augmented reality aims to insert virtual objects in real scenes. In order to obtain a coherent and realistic integration, these objects have to be relighted according to their positions and real light conditions. They also have to deal with occlusion by nearest parts of the real scene. To achieve this, we have to extract photometry and geometry from the real scene. In this paper, we adapt high dynamic range reconstruction and depth estimation methods to deal with real-time constraint and consumer devices. We present their limitations along with significant parameters influencing computing time and image quality. We tune these parameters to accelerate computation and evaluate their impact on the resulting quality. To fit with the augmented reality context, we propose a real-time extraction of these information from video streams, in a single pass.
[Detection of spikes in epileptic EEG based on Multiresolution Tsallis' entropy]. (2001)

In this paper, the detection of the spikes in the epileptic EEG signal was studied based on Multiresolution Tsallis' entropy (MRET). First, EEG signals were decomposed into wavelet series, and then, at every scale, the abnormal spikes were distinguished from normal background EEG activities by using MRET. The analysis of 6 patients' EEG data showed that the abnormal epileptiform spikes in EEG can be accurately detected with this method, which opens up the perspectives of building up automatic detection devices for spikes in EEG. Compared with the Shannon entropy, the MRET provides one with more detailed information.
Synthesis of hollow and mesoporous polycaprolactone nanocapsules, (2011)

New polycaprolactone (PCL) nanocapsules with a hollow core and mesoporous shell have been synthesized. The PCL nanocapsules have an average size of about 100 nm and a mesopores shell of about 20 nm. The size of the mesopores on the shell is about 4 nm. Fluorescent dye Rhodamin 6G was loaded into the nanocapsules to demonstrate the mesoporous structure of the capsules and their ability to load small molecules. The nanocapsules with such a structure can be used in many areas for various applications such as drug and gene delivery.
Enhancing the Location-Context Through Inference Over Positioning Data (2006)

Abstract. The current ubiquity of wireless communication networks is enabling new ways to compute the position of mobile devices and their users. One good example is the Place Lab system that exploits the beacons broadcast by many wireless networks to estimate the geographic position of mobile users. Although position is a fundamental dimension in the user’s context, other location-related dimensions of the context are also important for the development of innovative context-aware applications. In this paper we propose a new architecture for context acquisition and management, as a new layer added over the Place Lab system, where inference techniques over the basic positioning data are used to enrich the context with new dimensions without compromising user privacy. 1
Respuesta al comentario de C. Brambila al artículo : Determinantes socioecónomicos de migración en México (1990)

Aunque los autores reconocen que algunos aspectos del comentario son valiosos, discuten puntos que, en su opinión, son incorrectos.
Peptides and Peptidomimetics in Medicine, Surgery and Biotechnology (2006)

Despite the fact that they have been used for a century to treat several kinds of diseases, peptides and short proteins are now considered the new generation of biologically active tools. Indeed, recent findings suggest a wide range of novel applications in medicine, biotechnology, and surgery. The efficacy of native peptides has been greatly enhanced by introducing structural modifications in the original sequences, giving rise to the class of peptidomimetics. This review gives an overview of both classical applications and promising new categories of biologically active peptides and analogs. Besides the new entries in well known peptide families, such as antibiotic macrocyclic peptides, integrin inhibitors, as well as immunoactive, anticancer, neuromodulator, opioid, and hormone peptides, a number of novel applications have been recently reported. Outstanding examples include peptide-derived semi-synthetic vaccines, drug delivery systems, radiolabeled peptides, self-assembling peptides, which can serve as biomaterials in tissue engineering for creating cartilage, blood vessels, and other tissues, or as substrates for neurite outgrowth and synapse formation, immobilized peptides, and proteins. Finally, peptide-based biomaterials can find applications in bio-nanotechnology for bio-microchips, peptide nanorods and nanotubes, bio-sensors, bio-electronic devices, and peptide-metal wires.
DESARROLLO CIENTIFICO Y TECNOLOGICO (1973)

PROXIMAMENTE SE CREARA UNA DINAMICA DE DESARROLLO TECNOLOGICO Y CIENTIFICO EN LAS EMPRESAS DE AMERICA LATINA, SENALA EL DIRECTOR EJECUTIVO SALIENTE DE CLADEA, DOCTOR HANS PICKER; INDICO QUE LA IDEA PARTE DE LA NECESIDAD DE CONTAR CON UN SISTEMA DE ORGANIZACION QUE ESTIMULE LA INNOVACION, AUNADO A UNA ADECUADA DIRECCION EMPRESARIAL. ACERCA DEL SEMINARIO SOBRE ALIMENTACION, NUTRICION Y COMERCIALIZACION, QUE SERA PROPUESTO A LA FAO, INDICO QUE TIENE COMO FINALIDAD EVALUAR LAS TECNICAS DE COMERCIALIZACION APLICADAS EN LOS PROGRAMAS DE NUTRICION.
Fault Localization Using Passive End-to-End Measurement and Sequential Testing for Wireless Sensor Networks (2009)

Faulty components in a network need to be localized and repaired to sustain the health of the network. In this paper, we propose a novel approach that carefully combines active and passive measurements to localize faults in wireless sensor networks. More specifically, we formulate a problem of optimal sequential testing guided by end-to-end data. This problem determines an optimal testing sequence of network components based on end-to-end data in sensor networks to minimize testing cost. We prove that this problem is NP-hard and propose a greedy algorithm to solve it. Extensive simulation shows that in most settings our algorithm only requires testing a very small set of network components to localize and repair all faults in the network. Our approach is superior to using active and passive measurements in isolation. It also outperforms the state-of-the-art approaches that localize and repair all faults in a network.
Distributed Detection in Wireless Sensor Networks Using A Multiple Access Channel (2007)

Distributed detection in a one-dimensional (1-D) sensor network with correlated sensor observations, as exemplified by two problems-detection of a deterministic signal in correlated Gaussian noise and detection of a first-order autoregressive [AR(1)] signal in independent Gaussian noise, is studied in this paper. In contrast with the traditional approach where a bank of dedicated parallel access channels (PAC) is used for transmitting the sensor observations to the fusion center, we explore the possibility of employing a shared multiple access channel (MAC), which significantly reduces the bandwidth requirement or detection delay. We assume that local observations are mapped according to a certain function subject to a power constraint. Using the large deviation approach, we demonstrate that for the deterministic signal in correlated noise problem, with a specially chosen mapping rule, MAC fusion achieves the same asymptotic performance as centralized detection under the average power constraint (APC), while there is always a loss in error exponents associated with PAC fusion. Under the total power constraint (TPC), MAC fusion still results in exponential decay in error exponents with the number of sensors, while PAC fusion does not. For the AR signal problem, we propose a suboptimal MAC mapping rule which performs closely to centralized detection for weakly correlated signals at almost all signal-to-noise ratio (SNR) values, and for heavily correlated signals when SNR is either high or low. Finally, we show that although the lack of MAC synchronization always causes a degradation in error exponents, such degradation is negligible when the phase mismatch among sensors is sufficiently small
THE REACTION OF ARYLSULFUR TRIFLUORIDE WITH STEROLS (1981)

It was shown that on reaction with arylsulfur trifluoride steroidal alcohols were converted into the corresponding fluorides with inversion of configuration, thus 3α-and 3β-cholestanols were converted into 3β-and 3α-fluorocholestanes respectively; whereas cholesterol was converted into 3β-fluoro-⊿~5-cholestene, indicating homoallylic participation of the ⊿~5-double bond during the displacement reaction. Various reaction byproducts were isolated and identified, For example, from the reaction with cholestanols, ⊿~2-cholestene, the elimination product was isolated; from the reaction with cholesterol, ⊿~(3,5)-cholestadiene, the elimination product, dicholesteryl ether, the bimolecular dehydration product, and 3β-chloro-⊿~5-cholestene, the product formed through the participation of the solvent CCl_4, were isolated. With p-nitrophenyl sulfur trifluoride as fluorinating agent, a small amount of ⊿~4-cholestenone-3 was also obtained. The influence of solvent and reaction temperature on the product distribution was described.
High Hydrostatic Pressure Induces the Dissociation of cpn60 Tetradecamers and Reveals a Plasticity of the Monomers (1995)

Hydrostatic pressures up to 2 kbar have been used to form monomers from the 14-subunit oligomer of the chaperonin, Cpn60. The fluorescence of 1,1'-bi(4-anilino) naphthalene-5,5'-disulfonic acid (bisANS), followed at high pressure, demonstrated an increase in hydrophobic exposure on dissociation. Cpn60 dissociated with first order kinetics. The transition occurred between 1.3 and 2 kbar (P50 = 1.75 kbar), and it was facilitated by MgATP (P50 = 1.1 kbar). With MgATP, the fluorescence showed a rapid first order phase (t1/2 = 3.7 min) in addition to a phase that was similar to the single phase for Cpn60 alone (t1/2 = 11.4 min). The bisANS fluorescence decreased slowly after depressurization, and the relaxation was faster at 25 degrees C (t1/2 = 58 h) than at 4 degrees C (t1/2 = 86 h) and faster still if the sample at 4 degrees C contained MgATP when it was pressurized (t1/2 = 18 h). There was no significant effect if the MgATP was added after depressurization. Analytical ultracentrifugation, after depressurization, confirmed that metastable monomers were produced that slowly reassociated to form the oligomers (t1/2 = 150 h at 25 degrees C). Immediately after depressurization, the monomers (a) had all three sulfhydryl groups exposed for labeling with 6-iodoacetamidofluorescein, (b) showed a proteolytic susceptibility that was intermediate between native Cpn60 and Cpn60 in 2.5 M urea, and (c) were not able to capture a folding intermediate of the enzyme rhodanese. After incubation at atmospheric pressure, monomeric Cpn60 regained the ability to interact with rhodanese intermediates, and the sulfhydryl reactivity fell before significantly reassociating to 14-mers. The different rates of recovery of the native properties indicate that a complex series of conformational events occur following depressurization. Finally, the monomers resulting from pressure were different from those produced from Cpn60 by the action of 2.5 M urea. These results demonstrate that there is a fast, pressure-induced dissociation of the Cpn60 14-mer followed by a conformational drift of the dissociated monomers that can be influenced by the presence of MgATP.
Low Temperature Fabrication of AlN/Ge Structure Using Electron Cyclotron Resonance Plasma Nitridation (2009)

The structural and electronical properties of AlN/Ge(100) fabricated by Al-metal DC sputtering and ECR plasma nitridation were investigated. It was found that the dielectric constant of AlN was 8.9 in this fabrication method. Ge surface potential was controlled by gate voltage, and sharper curve of capacitancevoltage characteristics was obtained by using AlN as the insulator. However, the AlN/Ge structure shows a positive VFB shift which is a characteristic feature using Ge substrate. It was confirmed that the VFB shift occurred due to the effect of plasma irradiation at the interfacial Ge nitride layer.
Severe Obsessive-Compulsive Disorder With and Without Comorbid Hair Pulling (2005)

Hair pulling is a highly common comorbidity in severe OCD. Women and early-onset OCD patients appear to be more vulnerable to comorbid hair pulling. OCD sufferers with comorbid hair pulling also exhibit an increased risk for tics and may present with different OCD symptomatology.
Direct Identification of Palmitic Acid as the Lipid Attached to p21 <sup> <i>ras</i> </sup> (1986)

p21v-H-ras, the transforming protein of Harvey murine sarcoma virus, contains a covalently attached lipid. Using thin-layer chromatography, we identified the acyl group as the 16-carbon saturated fatty acid palmitic acid. No myristic acid was detected in fatty acids released from in vivo-labeled p21v-H-ras. The p21v-K-ras protein encoded by Kirsten sarcoma virus was also palmitylated. The processing and acylation of p21v-K-ras however differed from that of p21v-H-ras. Three forms of [3H]palmitic acid-labeled p21ras proteins were detected in Kirsten sarcoma virus-transformed cells. This contrasted with Harvey sarcoma virus, in which two forms of p21v-H-ras contained palmitic acid. Analysis by partial proteolysis of p21v-H-ras labeled with [3H]palmitic acid suggested that all of the lipid found in intact p21v-H-ras was located in the C-terminal region. On sodium dodecyl sulfate-polyacrylamide gels, p21v-H-ras labeled with [3H]palmitic acid migrated slightly ahead of the majority of p21v-H-ras. Of the mature forms of p21v-H-ras, apparently only a subpopulation contains palmitic acid.
Hydration of Microcrystalline Cellulose and Milled Cellulose Studied by Sorption Calorimetry (2008)

The hydration of two different polymorphs of microcrystalline cellulose (cellulose I and II), as well as the hydration of amorphous cellulose was studied using water sorption calorimetry, gravimetric water vapor sorption, nitrogen sorption, and X-ray powder diffraction. Amorphous cellulose was prepared by means of ball-milling of microcrystalline cellulose (MCC). Whereas X-ray data showed the untreated MCC to consist of cellulose I, the amorphous cellulose was found to recrystallize into cellulose II after contact with water or water vapor at relative humidities (RHs) above 90%. Sorption isotherms show an increase of water sorption in the sequence cellulose I<cellulose II<amorphous cellulose. The enthalpy of water sorption becomes more exothermic in the same sequence. The specific area of cellulose is dramatically higher when calculated from the water adsorption than when calculated from nitrogen adsorption. A proposed mechanism of water sorption by MCC implies the adsorption of water molecules at solid-solid interfaces, i.e., between neighboring microfibrils, which explains the observed difference between water and nitrogen. The Brunauer-Emmett-Teller (BET) model is therefore not appropriate for the description of the hydration of cellulose. Rather, the Langmuir model represents a more accurate description of water sorption by MCC at low RH. At higher RH, the water adsorption competes with capillary condensation. The thickness of microfibrils, as calculated using the fitting of the sorption isotherm of MCC with the Langmuir equation, is about 4 nm. This value compares favorably with literature data.
A review on the improvement of stevia [<i>Stevia rebaudiana</i>(Bertoni)] (2011)

Yadav, A. K., Singh, S., Dhyani, D. and Ahuja, P. S. 2011. A review on the improvement of Stevia [Stevia rebaudiana (Bertoni)]. Can. J. Plant Sci. 91: 1–27. Stevia rebaudiana (Bertoni) is a herbaceous perennial plant (2n=22) of genus Stevia Cav., which consists of approximately 230 species of herbaceous, shrub and sub-shrub plants. Leaves of stevia produce diterpene glycosides (stevioside and rebaudiosides), non-nutritive, non-toxic, high-potency sweeteners and may substitute sucrose as well as other synthetic sweetners, being 300 times sweeter than sucrose. In addition to its sweetening property, it has medicinal values and uses. Stevia is self-incompatible plant and the pollination behaviour is entomophilous. Rebaudioside-A is of particular interest among the glycosides produced in the leaves of stevia because of the most desirable flavour profile, while, stevioside is responsible for aftertaste bitterness. Development of new varieties of S. rebaudiana with a higher content of rebaudioside-A and a reduced content of stevioside is the primary aim of plant breeders concerned with the improvement and utilization of this source of natural sweeteners. The proportions of rebaudioside-A and -C are controlled by a single additive gene known to be co-segregating suggesting synthesis by the same enzyme. Stevioside and rebaudioside-A are negatively correlated, while rebaudioside-A and -C are positively correlated. Conventional plant breeding approaches such as selection and intercrossing among various desirable genotypes is the best method for improving quality traits in a highly cross-pollinated crop like stevia. Various plant types with larger amounts of specific glycoside have already been patented, such as RSIT 94-1306, RSIT 94-75, RSIT 95-166-1 through selection and intercrossing. Composites and synthetics can be used to capture part of the available heterosis because of the high degree of natural out-crossing and the absence of an efficient system of pollination control. Synthetics and composites like “AC Black Bird” and “PTA-444” have already been developed. Polyploidy results in better adaptability of individuals and increased organ and cell sizes. Tetraploids have larger leaf size, thickness and have potential use in increasing biomass and yield in comparison with diploid strains. Characters of interest with low variability in the population may be improved through mutation breeding. Use of biotechnological approaches, such as tissue culture for the mass propagation of elite genotypes, anther culture for development of pure homozygous doubled haploid and molecular marker technology for identification of marker loci linked to rebaudioside-A trait, can create new opportunities for plant breeders. Understanding the mechanism and pathway of biosynthesis of steviol glycosides can help to improve the glycoside profile by up-regulation and down-regulation of genes.
The Effect of Remifentanil on Cerebral Blood Flow Velocity (1998)

Transcranial Doppler sonography was used to monitor remifentanil-induced changes in cerebral perfusion. We found that large doses of remifentanil reduced cerebral blood flow velocity despite constant perfusion pressure. This may implicate a central mechanism for cerebral hemodynamic effects of remifentanil.
Text Clustering Algorithm Based on the Graph Structures of Semantic Word Co-occurrence (2016)

Text theme is the key of text clustering, while the co-occurrence words can be very stronger to express text theme in document. This paper proposes a text clustering algorithm based on the text semantic representation and the graph structure of word co-occurrence on the basis of in-depth studying text theme mining and word co-occurrence. First, the algorithm constructs the text graph-structure according to the co-occurrence of feature words. In other words, it uses the graph structure to represent all texts. Then, it adopts the maximum common sub-graph between two texts to calculate their similarity and combines with K-means clustering algorithm to realize the document clustering. The compared experimental results with hierarchical clustering algorithm show the K-means clustering algorithm based on the graph structures of word co-occurrence greatly reduce the high dimension of text vector and the algorithm complexity, significantly improves the efficiency and accuracy of text clustering, and it can also produce the clustering effect of good quality.
Binding of phenylalkylamine derivatives at 5-HT1C and 5-HT2 serotonin receptors: evidence for a lack of selectivity (1992)

Certain phenylalkylamine derivatives have been considered to bind selectively at 5-HT2 serotonin receptors. It is now recognized that the most widely used derivatives, i.e., 1-(2,5-dimethoxy-4-X-phenyl)-2-aminopropanes where X = Me (DOM), Br (DOB), and I (DOI) (1-3, respectively) also bind at the more recently identified population of serotonin 5-HT1C receptors. The purpose of the present investigation was to determine whether simple phenylalkylamines bind selectively at one population of receptors over the other. An examination of 34 derivatives reveals (i) similar structure-affinity relationships and (ii) a significant correlation (r = greater than 0.9, n = 25) between 5-HT1C and 5-HT2 affinity. None of the compounds included in the present study displayed more than a 10-fold selectivity for one population of these receptors over the other; the results suggest that these compounds (including the widely used 5-HT2 agonists DOB and DOI) are 5-HT1C/5-HT2 agents.
Dynamic CPU management for real-time, middleware-based systems (2004)

Many real-world distributed, real-time, embedded (ORE) systems, such as multiagent military applications, are built using commercially available operating systems, middleware, and collections of pre-existing software. The complexity of these systems makes it difficult to ensure that they maintain high quality of service (QOS). At design time, the challenge is to introduce coordinated QOS controls into multiple software elements in a non-invasive manner. At run time, the system must adapt dynamically to maintain high QOS in the face of both expected events, such as application mode changes, and unexpected events, such as resource demands from other applications. We describe the design and implementation of a CPU broker for these types of ORE systems. The CPU broker mediates between multiple real-time tasks and the facilities of a real-time operating system: using feedback and other inputs, it adjusts allocations over tune to ensure that high application-level QOS is maintained. The broker connects to its monitored tasks in a non-invasive manner, is based on and integrated with industry-standard middleware, and implements an open architecture for new CPU management policies. Moreover, these features allow the broker to be easily combined with other QOS mechanisms and policies, as part of an overall end-to-end QOS management system. We describe our experience in applying the CPU Broker to a simulated DUE military system. Our results show that the broker connects to the system transparently and allows it to function in the face of run-time CPU resource contention.
국가수준 유치원 평가 향후 개선을 위한 교사들의 논의 (2009)

본 연구는 2008년 실시된 국가수준 유치원 평가에 참여한 공립유치원 교사들을 통해 유치원 평가의 향후 개선방안에 대해 살펴보려는 목적으로 실시하였다. 연구 참여자는 국가수준 유치원 평가에 참여한 공립유치원에 근무하는 유치원 교사 8명이며 그들을 심층 면접하였다. 국가수준 유치원 평가를 받은 교사들은 국가수준 유치원 평가에 대해 첫째, 유치원과 동떨어진 평가지표, 둘째, 평가위원의 자격과 역할, 셋째, 평가 결과 공개와 인센티브 지원의 부적절성, 넷째, 평가 사후 관리 필요성을 제기하였다. 또한 국가수준 유치원 평가의 향후 개선에 대해 교사들은 첫째, 평가지표, 둘째, 평가위원, 셋째, 평가일정, 넷째, 평가 조력자에 대해 개선을 요구하였다. 본 연구를 통해 향후 국가수준 유치원 평가가 효율적으로 정착되는 시사점을 제공하는 의미 있는 일이 될 것으로 기대한다.