gebhart/patrepeval huggingface dataset:
Design and Implementation of a TCP Performance Enhancement Gateway for Satellite Networks (2010)

The performance of TCP suffers from degradation in satellite network due to long latency, high bit error rate. A design of TCP performance enhancing proxy (PEP) over satellite network is proposed. The network architecture is given based on the PEP, and the key technique is introduced. At last the PEP is validated with OPNET in this paper. The result shows that this PEP can improve the transmission efficiency significantly over satellite network, and the fairness is also good when the bandwidth is shared among multi-connections.
Integrating black start capabilities into offshore wind farms by grid‐forming batteries (2023)

Abstract Power systems are currently experiencing a transition towards decarbonisation through the large‐scale deployment of renewable energy sources. These are gradually replacing conventional thermal power plants which today are the main providers of black start services. Consequently, in case of a total/partial blackout, conventional black‐start resources may not be ready for operation. Offshore wind farms (OWFs), with their large capacity and fast controllers, have potential as innovative black‐start units, thus, the need for a new design for OWFs. Here, challenges and possible solutions in integrating black start services into offshore wind farms will be presented. The first challenge is represented by the self‐start capability. The self‐start unit should be capable of forming the wind farm power island and withstanding transient phenomena due to the equipment energisation. The investigated solution comprises grid‐forming (GFM) converters in the wind farm design, which could be battery energy storage systems (BESSs) to also increase the service availability. The challenges are analysed using simulations on a wind farm, and the proposed solutions are discussed. It can be concluded that a hybrid system comprised of a BESS and an OWF, with GFM control, applying soft‐charging, etc., represents a good proposal to provide black start services by OWFs.
THE RELATIONSHIP BETWEEN COLOR DISCRIMINATION AND VISUAL ACUITY IN SENILE MACULAR DEGENERATION (1980)

The course of ocular disease can be monitored by the assessment and measurement of a number of visual functions. In the clinical situation, visual acuity and color discrimination are obvious and simple functions to assess. The relationship between color vision and visual acuity in eye disease has generally been discussed only in qualitative terms. This paper examines the correlation between visual acuity and color discrimination for a number of subjects exhibiting varying degrees of severity of senile macular degeneration.
Nanoparticles as Computed Tomography Contrast Agents: Current Status and Future Perspectives (2012)

The importance of computed tomography (CT) as one of the leading radiology technologies applied in the field of biomedical imaging escalated the development of nanoparticles as the next generation CT contrast agents. Nanoparticles are expected to play a major role in the future of medical diagnostics due to their many advantages over the conventional contrast agents, such as prolonged blood circulation time, controlled biological clearance pathways and specific molecular targeting capabilities. This paper will describe the basic design principles of nanoparticle-based CT contrast agents and review the state-of-the-art developments and clinical applications of blood pool, passive and active targeting CT contrast agents.
Chemical and structural similarities in wall polysaccharides of some Penicillium, Eupenicillium and Aspergillus species (1992)

Various fractions were extracted from cell-wall material of Eupenicillium crustaceum, Penicillium brevi-compactum, P. decumbens, Aspergillus flavipes and A. ochraceus. The most characteristic fractions, which may have chemotaxonomic relevance, were F1I, an alpha-(1-3) glucan (alkalisoluble, water-insoluble), which amounted to 16.2-32.5% of the cell-wall material, and F1S (alkali and water-soluble) which represented 2.5-6.2% of the cell-wall material and was identified as a beta-(1-5) galactan. 13C-NMR spectra of the F1S fractions showed the same pattern for all the fungal species, characteristic of beta-(1-5) linked galactofuranose.
A fast disparity estimation algorithm for stereo video coding based on H.264 (2006)

Fast and efficient disparity estimation and compensation are the key technique in stereo video processing.The constraints on disparity distribution and correlations among disparity vectors were first analyzed,including the constraints of the epipolar lines and directions,the temporal correlation among inter-frame disparity vectors and spatial correlation among intra-frame disparity vectors.The correlation between block selection modes in H.264 was utilized to optimize the strategy of disparity estimation.Experimental results showed that,as compared with the full search algorithm,the fast algorithm proposed in the paper is more effective regarding computing complexity while the quality of reconstructed images is close to the one by means of the full search method.
Assessing health program performance in low- and middle-income countries: building a feasible, credible, and comprehensive framework (2015)

The emphasis on credible, feasible, and comparable measures in the framework can assist funders, program managers, and researchers to support, manage, and evaluate the most promising strategies to improve access to effective health services. Although some of the criteria that the literature views as important - particularly population coverage, pro-poor targeting, and health outcomes - are less frequently reported, the overall comparison provides useful insights.
Computerized characterization of breast masses on three‐dimensional ultrasound volumes (2004)

We are developing computer vision techniques for the characterization of breast masses as malignant or benign on radiologic examinations. In this study, we investigated the computerized characterization of breast masses on three-dimensional (3-D) ultrasound (US) volumetric images. We developed 2-D and 3-D active contour models for automated segmentation of the mass volumes. The effect of the initialization method of the active contour on the robustness of the iterative segmentation method was studied by varying the contour used for its initialization. For a given segmentation, texture and morphological features were automatically extracted from the segmented masses and their margins. Stepwise discriminant analysis with the leave-one-out method was used to select effective features for the classification task and to combine these features into a malignancy score. The classification accuracy was evaluated using the area Az under the receiver operating characteristic (ROC) curve, as well as the partial area index Az(0.9), defined as the relative area under the ROC curve above a sensitivity threshold of 0.9. For the purpose of comparison with the computer classifier, four experienced breast radiologists provided malignancy ratings for the 3-D US masses. Our dataset consisted of 3-D US volumes of 102 biopsied masses (46 benign, 56 malignant). The classifiers based on 2-D and 3-D segmentation methods achieved test Az values of 0.87+/-0.03 and 0.92+/-0.03, respectively. The difference in the Az values of the two computer classifiers did not achieve statistical significance. The Az values of the four radiologists ranged between 0.84 and 0.92. The difference between the computer's Az value and that of any of the four radiologists did not achieve statistical significance either. However, the computer's Az(0.9) value was significantly higher than that of three of the four radiologists. Our results indicate that an automated and effective computer classifier can be designed for differentiating malignant and benign breast masses on 3-D US volumes. The accuracy of the classifier designed in this study was similar to that of experienced breast radiologists.
Plastic optical fibres (POF) in sensing: current status and prospects (Invited Paper) (2005)

POF has found wide use in multimode intensity-based sensor applications. The characteristics of POF, limit the link (sensor)length to a few tens of meters and the sensor operational temperature cannot exceed 80°C. However, when these limitations are not important, POF sensors can offer their most significant advantage over corresponding glass fibre sensors, and this is a significantly lower system cost. Following recent new developments in POF technology, such as fibre gratings and microstructured POF, one looks forward to new and more exciting POF sensor applications. The future of POF sensors is concluded as optimistic.
Syntheses of Strychnan- and Aspidospermatan-Type Alkaloids. 9.<sup>1</sup> The Enantioselective Generation of Tetracyclic ABCE Intermediates by a Tandem Condensation, [3,3]-Sigmatropic Rearrangement, and Cyclization Sequence (1997)

Reactions of substituted acroleins with the tryptophan-derived benzyl 2-(benzylamino)-3-[3-[2-[(methoxycarbonyl)methyl]indolyl]]propionate gave tetracyclic hexahydro-1H-pyrrolo[2,3-d] intermediates with stereoselective placement of substituents for cyclization to pentacyclic Strychnos alkaloids. The benzyl ester moiety was readily removed by formation of a corresponding nitrile and reduction, thus providing enantioselective syntheses of the tetracyclic compounds.
Modelling exercise-induced pulmonary hemorrhage in racing thoroughbreds. (1992)

Exercise-induced pulmonary hemorrhage (EIPH) affects a large portion of racing thoroughbred horses. Sites of hemorrhage and causal mechanisms remain unestablished. Our mathematical model was constructed to test the hypothesis that EIPH could be caused by a combination of respiratory and circulatory mechanical factors occurring during exercise. Various physiological data for respiration, blood circulation and exercise were incorporated into the model. Results show that inhalation pressure drops across airway resistances become great enough during exercise to cause rupture of capillaries for both bronchial and pulmonary systems.
Determining three‐dimensional structure from image sequences given by horizontal and vertical moving camera (1987)

Abstract Stereovision is the simplest method for acquiring three‐dimensional information. A problem then is that sometimes it is difficult to establish a correspondence between the left and right images in such cases as: (1) multiple correspondence; (2) occlusion; (3) positional reversals; and (4) horizontal edge. This paper proposes a method to determine the three‐dimensional structure of the scene from the sequences of images obtained by moving camera. First, a two‐dimensional image is constructed from the sequence of images in which the apparent locus of motion is represented as a segment. The corresponding problem here is simplified as the detection of segments on the synthetic image. By examining the relations among the detected segments, the occlusions can be detected, and the correspondence can be established where positional reversals occur. By moving the camera not only in one direction, but also in orthogonal directions, the unique correspondence can be established, independently of the direction of the edge. An input system was constructed which can accept a large number of stereo image sequences with a high speed, and a complex three‐dimensional structure of the scene was actually restored.
Intraoperative Vancomycin Use in Spinal Surgery (2014)

Prophylactic intraoperative vancomycin use in the wound bed in spinal surgery may increase the incidence of gram-negative or polymicrobial spinal infections. The use of intraoperative vancomycin may correlate with postoperative seromas, due to the high incidence of nonpositive cultures. Large, randomized, prospective trials are needed to demonstrate causation and dose-response relationship.
The pathology of wear in the Beall model 104 heart valve prosthesis. (1977)

We examined 13 Beall model 104 prostheses recovered at surgery or autopsy 10 to 84 1/2 months after insertion and observed the pattern of prosthesis wear. We defined wear as "mild" when the disc was notched but neither the metal of the struts was exposed not the cloth seat torn. In "moderate" wear the disc was notched, the Teflon coating of the struts was worn away exposing the underlying metal but the cloth of the set was not torn. The cloth seat was torn in "severe" wear, exposing the metal seat and causing a different pattern of disc erosion. In one case this allowed the disc to tilt into the valve lumen and, later, to escape from its cage. Most of the prostheses studied showed "moderate" or "severe" wear. We believe that some degree of wear is inevitable. Clinical signs and symptoms were not specific but a rough correlation existed between the severity of hemolysis, as indicated by serum LDH levels, and the degree of prosthesis wear. When wear was "severe", the results of cardiac catheterization studies usually mirrored the change, but there were a few exceptions. All patients with the Beall model 104 prosthesis may eventually develop "severe" wear, and we recommend regular reassessment with a view toward prosthesis replacement.
INSTALACIÓN DE LA MESA DE DIÁLOGO UNAM-STUNAM (2015)

IMAGEN DE LA INSTALACION DE LA MESA DE DIALOGO UNAM-STUNAM (SECCION GACETA ILUSTRADA, PAGINA 2).
Integrating a misprediction recovery cache (MRC) into a superscalar pipeline (1996)

In modern processors, deep pipelines couple with superscalar techniques to allow each pipe stage to process multiple instructions. When such a pipe must be pushed and refilled, as when predicted program flow beyond a branch is subsequently recognized as wrong, the temporary performance loss is significant. While modern branch target buffer (BTB) technology makes this flush/refill penalty fairly rare, the penalty that accrues from the remaining branch mispredictions is a serious impediment to even higher processor performance. Advanced mechanisms that can reduce this residual misprediction penalty can be of enormous value in future microprocessor designs. One promising new mechanism, the Misprediction Recovery Cache (MRC) is proposed previously. In this paper, we focus especially on MRC integration into existing pipelines.
Nanomaterials of high surface energy with exceptional properties in catalysis and energy storage (2011)

The properties of nanomaterials for use in catalytic and energy storage applications strongly depends on the nature of their surfaces. Nanocrystals with high surface energy have an open surface structure and possess a high density of low-coordinated step and kink atoms. Possession of such features can lead to exceptional catalytic properties. The current barrier for widespread industrial use is found in the difficulty to synthesise nanocrystals with high-energy surfaces. In this critical review we present a review of the progress made for producing shape-controlled synthesis of nanomaterials of high surface energy using electrochemical and wet chemistry techniques. Important nanomaterials such as nanocrystal catalysts based on Pt, Pd, Au and Fe, metal oxides TiO(2) and SnO(2), as well as lithium Mn-rich metal oxides are covered. Emphasis of current applications in electrocatalysis, photocatalysis, gas sensor and lithium ion batteries are extensively discussed. Finally, a future synopsis about emerging applications is given (139 references).
A New Fault Diagnosis of Multifunctional Spoiler System Using Integrated Artificial Neural Network and Discrete Wavelet Transform Methods (2018)

Multifunctional spoiler (MFS) is one of the most critical parts of the jet aircraft that can be degraded due to incipient faults and consequently jeopardize the safety of a flight. This paper introduces a new fault diagnosis method for the MFS using fusion methodology. Three main faults, including null bias current, actuator leakage coefficient, and internal leakage faults are considered and three parallel fusion blocks are invoked to isolate these faults in the system. In each block, an integrated method using an artificial neural network (ANN) and discrete wavelet transform (DWT) is developed via ordered weighted averaging operator to achieve a higher reliability and faster diagnosing system. Moreover, several test scenarios are examined to validate the system performance under faulty conditions. Simulation results show the capability of the system in isolating incipient faults in comparison with ANN and DWT methods.
Chronic Thromboembolic Pulmonary Hypertension (2008)

Chronic thromboembolic pulmonary hypertension (CTEPH) is an important form of pulmonary hypertension to detect because prompt treatment can lead to a surgical cure. The true incidence is unknown, but it is estimated to occur in 1% to 3% of patients following acute thromboembolism. Detection may be difficult, because symptoms are nonspecific and other diagnoses are often made before that of CTEPH is entertained. Routinely screening all pulmonary hypertension patients with a ventilation–perfusion scan will detect most, however. Candidates for thromboendarterectomy are evaluated using right heart catheterization, computerized tomographic angiography, and pulmonary angiography, seeking those with proximal obstructions that can be removed surgically. Patients who are not candidates for thromboendarterectomy because of comorbidities, very high pulmonary vascular resistances. or mainly distal disease may still receive medical therapy or be considered for lung transplantation.
Binding Causes the Remote [5‘-<sup>3</sup>H]Thymidine Kinetic Isotope Effect in Human Thymidine Phosphorylase (2004)

The remote 5'-3H V/K kinetic isotope effect (KIE) observed in human thymidine phosphorylase (6.1%) is significantly larger than can be explained by the reaction chemistry. One hypothesis connects the 5'-3H KIE in purine nucleoside phosphorylase to that enzyme's SN1 transition state. The transition state of thymidine phosphorylase, however, is an SN2 nucleophilic displacement. Here we report equilibrium binding isotope effects sufficiently large to explain the presence of this substantial KIE in thymidine phosphorylase.
Host cell caveolae act as an entry-port for Group A streptococci (2003)

This study identified caveolae as an entry port for group A streptococci into epithelial and endothelial cells. Scanning electron microscopy as well as ultrathin sections of infected cells demonstrated accumulation of small omega-shaped cavities in the host cell membrane close to adherent streptococci. During invasion, invaginations were formed that subsequently revealed intracellular compartments surrounding streptococci. Caveolin-1 was shown to be present in the membrane of invaginations and the compartment membranes. These compartments were devoid of any classic endosomal/lysosomal marker proteins and can thus be described as caveosomes. Disruption of caveolae with methyl-beta-cyclodextrin and filipin abolished host cell invasion. Importantly, streptococci inside caveosomes avoid fusion with lysosomes. Expressing of SfbI protein on the surface of the non-invasive S. gordonii resulted in identical morphological alterations on the host cell as for S. pyogenes. Incubation of HUVEC cells with purified recombinant sole SfbI protein also triggered accumulation of cavity-like structures and formation of membrane invaginations. Tagged to colloidal gold-particles, SfbI protein was shown to cluster following membrane contact. Thus, our results demonstrate that host cell caveolae initiate the invasion process of group A streptococci and that the streptococcal invasin SfbI is the triggering factor that activates the caveolae-mediated endocytic pathway.
Impact of self-phase modulation on coherently combined fiber chirped-pulse amplifiers (2010)

The impact of self-phase modulation on coherently combined ultrafast fiber-based chirped-pulse amplifiers (CPA) is studied. We point out that, in nonlinear CPA regime, the nonlinear phase accumulated in each fiber amplifier can significantly differ from one to another, resulting in serious efficiency degradation of coherent combining. A test bench based on picosecond pulses, and a single fiber amplifier is developed to experimentally demonstrate the effect. The effects that can lead to this nonlinear phase deviation and the induced system limitations are discussed and analyzed.
A Rare η<sup>3</sup> Binding Mode of Aryloxides in Iridium, Rhodium, and Ruthenium Complexes (2008)

A rare η3 binding mode of aryloxides was obtained in the reaction of BINOL and [Cp*IrCl2]2. Interconversions between and η1 and η3 modes of aryloxides were observed by VT NMR spectroscopy, and the activation barrier was measured. The preference of this binding mode as a function of phenols was discussed.
Genetics of iron storage and hemochromatosis. (2001)

The regulation of total body iron is important to all organisms. In mammals, the iron content of the body is controlled almost entirely through regulation of absorption. The precise mechanism by which iron is absorbed and the manner in which the absorption is regulated is unknown, but a number of different proteins that are involved either in the transport process itself or its regulation have been identified. These include HFE, a class 1 HLA molecule involved in hereditary hemochromatosis, the divalent metal transporter (DMT-1), hephaestin, the transferrin receptor, and mobilferrin. Iron overload occurs in a number of hereditary disorders including atransferrinemia, aceruloplasminemia, X-linked hereditary sideroblastic anemia, thalassemia major, congenital dyserythropoietic anemia, and various red cell enzyme deficiencies. In Europeans, most cases of hereditary hemochromatosis are due to mutations of the HFE gene. There are two major mutations of this gene c.845G-->A (C282Y) and c.187C-->G (H63D). These mutations have extraordinarily high prevalence in northern Europe and approximately five in a thousand Europeans are homozygous for the 845A mutation. The penetrance of even the homozygous state for the 845A mutation is very low and that for the compound heterozygote 845A/187G, which is also associated with hemochromatosis, is even lower. The reason for the markedly variable penetrance that exists in this disorder remains unknown.
Formation of gold(I) halide and thiocyanate complexes in pyridine and acetonitrile and the structures of gold(I) solvates in these solvents. A thermodynamic and EXAFS spectroscopic study (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of gold(I) halide and thiocyanate complexes in pyridine and acetonitrile and the structures of gold(I) solvates in these solvents. A thermodynamic and EXAFS spectroscopic studySten Ahrland, Karin Nilsson, Ingmar Persson, Akio Yuchi, and James E. Penner-HahnCite this: Inorg. Chem. 1989, 28, 10, 1833–1838Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 May 1989https://pubs.acs.org/doi/10.1021/ic00309a016https://doi.org/10.1021/ic00309a016research-articleACS PublicationsRequest reuse permissionsArticle Views249Altmetric-Citations21LEARN 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