gebhart/patrepeval huggingface dataset:
Estimation of flying capacitors voltages in multicell converters (2009)

Flying Capacitor Multicell (FCM) converters are very interesting alternative for medium voltage and high power applications. The main reason is increase in the number of output voltage levels and its apparent frequency. Balancing of flying capacitors voltages is an important constraint to proper performance of FCM converters. So, observation of these flying capacitors voltages for using in active control is valuable where using voltage sensors results in increasing cost and size of the converter. This paper presents a new strategy to estimate flying capacitors voltages of FCM converters. The proposed strategy is based on discrete time model of converter. So, advantage of the proposed strategy is its simplicity which is effective for real time implementation. The circuit is simulated using PSCAD/EMTDC software and simulation results are presented to validate the effectiveness of the proposed estimation strategy to observe the flying capacitors voltages.
Identification of electron traps in thermal silicon dioxide films (1981)

The infrared absorption of thermal SiO2 has been measured using the attenuated total reflectance technique. The samples were subjected to various water diffusion and annealing treatments. Electron trapping was also measured in similar samples. The infrared measurements show the presence of SiH, SiOH, and H2O groups in the SiO2 films, particularly after H2O diffusion. Examination of both the infrared absorption results and the electron trapping results show that the electron trap with a cross section of 1×10−17 cm2 is associated with SiOH groups, and that the electron trap with a cross section of 2×10−18 cm2 is associated with H2O.
A three-phase algorithm for whole-system live migration of virtual machines (2007)

No abstract available.
The effect of heat treatment on the morphology of D-Gun sprayed hydroxyapatite coatings (1999)

In this study, the morphology of the Hydroxyapatite (HA) coatings sprayed on Ti alloy samples by Detonation Gun Spray (D-Gun) and the effect of aging before and after heat treatment in physiological solution were observed. Cross-sectional porosity and percentages of amorphous and crystal phase were measured using optical, electron microscopy, and X-ray diffraction analysis. Differential Thermogravimetric Analysis (DTA) was performed to estimate the glass-crystalline phase transformation temperatures. Heat-treatment at 300, 500, 700, 800 and 1200 degrees C were carried out to confirm DTA results. As a final analysis, the aging effect using Ringer's solution for 1 week on heat-treated and non-heat-treated samples was measured. It was observed that, in D-Gun sprayed samples, the cross-sectional porosity stayed in the accepted 5% range as reported for other spraying techniques.(1-5) On the other hand, surface porosity measured using the water immersion method remained in the conventional porosity limit of 15% for non-heat-treated samples. Heat-treatment had a small influence on the porosity while the crystallinity increased considerably; in addition, aging had little effect on HA crystallinity for heat treated samples. This work showed that D-gun sprayed HA coatings had lower porosity and better integrity than other coatings, due to which we can expect better performance during in vivo applications.
Environmental Impact Evaluation for Thermal Power Project Based on Combinational Weight and TOPSIS Method (2012)

In electricity production and supply system of China, thermal power continues to dominate a larger proportion. In recent years, be influenced by energy-saving emission reduction and low carbon development policy, the environmental impact issue of thermal power project aroused great attention. This study has established a comprehensive evaluation system by analyzing integrated comprehensive effects of the environment caused by thermal power project. Combining with AHP theory, entropy theory and TOPSIS evaluation ideas, the study created a set of scientific assessment model. The research has verified that the validity of the model through empirical studies. And it provided a good theoretical basis for environmental management comprehensive thermal power project.
Residual Carrier Frequency Offset Estimation and Correction in OFDM MIMO Systems (2007)

This paper addresses the problem of estimating and correcting the residual carrier frequency offset in a multi-input-multi- output (MIMO) system employing orthogonal frequency division multiplexing (OFDM). The presented technique is based on the maximum likelihood criterion and exploits the pilot carriers of the OFDM modulation by assuming that no inter-carrier interference is present. Some implementation aspects of the estimator are also discussed, presenting two alternatives: the grid search and the truncated discrete Fourier transform (DFT) approaches. The evaluation of the estimator is performed by deriving and comparing the corresponding Cramer-Rao bound with the mean square error. Additional simulations are provided in terms of symbol error rate for the case of applying orthogonal space-time block coding to the data carriers.
Serological Comparisons of Strains of Infectious Bronchitis Virus Using Plaque-Purified Isolants (1974)

SUMMARY Nineteen isolants of infectious bronchitis virus (IBV), including most of the recently reported new isolants, were adapted to chick kidney cell cultures. After plaque purification and the preparation of antiserums against purified strains, antigen interrelatedness was evaluated with cross-neutralization tests by the plaque-reduction technique. The results indicated that there are 7 serotypes current in the United States and that the Australian T strain is distinct from each of these. Antigenic variants occurred within some of these serotypes.
Theoretical studies of differential propagation phase shift in meteorological polarization diversity radars at centimeter wavelengths (1991)

Explores an extension of the theory used by Jameson (1985) to centimeter wavelengths, and presents a detailed examination of its model dependencies at C-band. Firstly, the relationship between the differential propagation phase shift, Delta Phi and the rainrate, R is investigated with respect to various parameters such as water temperature, raindrop shape and dropsize distribution (DSD) form for centimeter wavelengths. A noniterative gate-by-gate algorithm for extracting Delta Phi from C-band circular depolarisation ratio (CDR) radar data, in which the effects of differential backscattering phase shift are taken into account is presented. By means of modelling attenuation and differential attention with differential propagation phase shift, propagation effects on CDR radar data can thus be reduced by correction processes. Some numerical results obtained from simulating modelled storms are also presented. These show that differential propagation phase shift can be applied to obtain improved measurements of precipitation.
Community Detection using Intelligent Clustering Technique and Sub-matrix Density Ordering (2009)

Detecting communities in real world networks is an important problem for data analysis in science and engineering. By clustering nodes intelligently, a recursive algorithm is designed to detect community. Since the relabeling of nodes does not alter the topology of the network, the problem of community detection corresponds to the finding of a good labelling of nodes so that the adjacency matrix form blocks. By putting a fictitious interaction between nodes, the relabeling problem becomes one of energy minimization, where the total energy of the network is defined by putting interaction between the labels of nodes so that the clustering of nodes in the same community will decrease the total energy. A greedy algorithm is used for the computation of minimum energy. The method shows efficient detection of community in artifical as well as real world network. The result is illustrated in a tree showing hierarchical structure of communities on the basis of sub-matrix density.
Interplay of polarization fields and Auger recombination in the efficiency droop of nitride light-emitting diodes (2012)

We use theoretical modeling to investigate the effect of polarization fields and non-radiative Auger recombination on the efficiency-droop and green-gap problems of polar and nonpolar nitride light-emitting diodes. The dependence of radiative and nonradiative recombination rates on electron-hole wave-function overlap is analyzed. Device designs that minimize the polarization fields lead to higher efficiency, not because the internal quantum efficiency is improved at a given carrier density but because they can be operated at a lower carrier density for a given current density.
Sufficient Conditions for Some Optimum-Property Facility Designs (1967)

A facility design is considered to consist of n mutually nonoverlapping facilities of known areas. Some problems are considered of finding, from the class of all possible facility designs, facility designs with optimum properties; sufficient conditions are given for certain minimum total cost and minimax facility designs, and examples are considered. Possible facility design applications include those of warehouse design and layout, parking lot design and layout, and stadium design.
ChemInform Abstract: Synthesis and in vitro Antiproliferative Activity of New Substituted Benzo[3′,2′:5,6]thiopyrano[4,3‐d]pyrimidines. (2008)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Synthesis, Antimicrobial Evaluation, and Structure–Activity Relationship of α-Pinene Derivatives (2014)

Several (+)- and (-)-α-pinene derivatives were synthesized and evaluated for their antimicrobial activity toward Gram-positive bacteria Micrococcus luteus and Staphylococcus aureus, Gram-negative bacterium Escherichia coli, and the unicellular fungus Candida albicans using bioautographic assays. (+)-α-Pinene 1a showed modest activity against the test organisms, whereas (-)-α-pinene 1b showed no activity at the tested concentration. Of all the α-pinene derivatives evaluated, the β-lactam derivatives (10a and 10b) were the most antimicrobial. The increase in the antimicrobial activity of 10a compared to 1a ranged from nearly 3.5-fold (C. albicans) to 43-fold (S. aureus). The mean ± standard deviation for the zone of inhibition (mm) for 10a (C. albicans) was 31.9 ± 4.3 and that for S. aureus was 51.1 ± 2.9. Although (-)-α-pinene 1b was not active toward the test microorganisms, the corresponding β-lactam 10b, amino ester 13b, and amino alcohol 14b showed antimicrobial activity toward the test microorganisms. The increase in the antimicrobial activity of 10b compared to 1b ranged from 32-fold (S. aureus) to 73-fold (M. luteus). The mean ± standard deviation for the zone of inhibition (mm) for 10b (S. aureus) was 32.0 ± 0.60 and that for M. luteus was 73.2 ± 0.30.
[Restitution of atrial repolarization and atrial fibrillation in canine atrium]. (2010)

The APDR and MAP characteristics are not uniform between atrium, which may be one of the important mechanisms responsible for the initiation of AF. Heterogeneity of APDR between LA and RA might create critical gradients or a dispersion of repolarization and substrate for re-entrant arrhythmias and vulnerability to AF.
Heterogeneously Catalyzed Gas-Phase Hydrogenation of <i>cis,trans,trans</i>-1,5,9-Cyclododecatriene on Palladium Catalysts Having Regular Pore Systems (1996)

The study deals with the heterogeneously catalyzed gas-phase hydrogenation of cis,trans,trans-1,5,9-cyclododecatriene on coated catalysts prepared by anodic oxidation of aluminum and a liquid-phase impregnation technique. The coat of the catalyst consists of alumina having a regular pore system and palladium as a catalytically active component which is immobilized at the pore walls. The thickness of the coat which is equal to the pore length is adjusted in each catalyst to a certain size in the range of 5−30 μm. The hydrogenation products are the intermediates cyclododecadiene and cyclododecene besides the completely saturated final product cyclododecane. The scope of the investigations is to find out the advantages of the prepared coated catalysts in comparison to a commercial hydrogenation catalyst and the interdependences between the thickness of the coat and product selectivities as a result of mass transport influences. It is shown that the formation of cyclododecene on the coated catalysts is predominant, and at conversions of more than 90%, the shorter the pore length of the coated catalysts, the higher the selectivity to cyclododecene.
Architecture of a single chip acoustic echo and noise canceller using cross spectral estimation (2003)

This paper describes the architecture of a single chip acoustic echo canceller and noise filter for full duplex hands free communications. To our knowledge the CENS90200 is the first ASIC to eliminate the acoustic echo by using cross spectral estimation. This approach is much more robust against the environmental noise typically found in a hands free (e.g. automotive) environment than the usually employed class of "normalized least mean square" (NLMS) algorithms. Additionally a noise filter reduces the background noise by using spectral minimal statistics and diffusive gain factors. These advanced algorithms have substantially greater computational performance requirements than their traditional counterparts. A highly portable architecture is presented that meets these requirements at low clock to sample frequency ratios. It combines directly hardware mapped algorithms and a purpose built processor optimized for spectral signal processing, thus making a low cost, single chip implementation possible.
Enfoque virtual del proceso de enseñanza aprendizaje de la asignatura “Electricidad Aplicada a la Ingeniería Mecánica II”. (2010)

The teaching-learning process of the subject “Applied Electricity to Mechanical Engineering II” for the formation of the students of the specialty of Mechanical Engineering from the University of Holguin was presented in this work. The work aims at the elaboration of a set of media in digital support for the simulation of electronic circuits, which will contribute to the development of analysis capability in solving problems of the Student’s range of activity, as well as a projection for them to face professional situations. The experience of the work done and the main results of its implementation are exposed.
A review of oxaliplatin and its clinical use in colorectal cancer (2004)

Colorectal cancer is one of the leading causes of death from malignant diseases in the Western world. Worldwide, approximately 50% of patients who present with colorectal cancer will develop metastatic disease and eventually die from this malignancy. Recently, significant advances have been made in the medical treatment of advanced colorectal cancer with the introduction of novel cytotoxic drugs, such as irinotecan and oxaliplatin. Based on the results of recent Phase III trials, combination regimens of infusional 5-fluorouracil/leucovorin and oxaliplatin (FOLFOX) have emerged as a new standard of care in the palliative and adjuvant treatment of colorectal cancer. The addition of biological agents targeting angiogenesis or oncogenes such as epidermal growth factor receptor (EGFR) to FOLFOX will conceivably further enhance the activity of treatment regimens. Making use of all available active therapeutic options in the course of disease has significantly improved median overall survival of metastatic colorectal cancer into a chronic disease, with implications for treatment strategies and pharmacoeconomic considerations.
The Src Homology Domain 2-Containing Inositol Phosphatase SHIP Forms a Ternary Complex with Shc and Grb2 in Antigen Receptor-stimulated B Lymphocytes (1999)

The inositol phosphatase SHIP has been implicated in signaling events downstream of a variety of receptors and is thought to play an inhibitory role in stimulated B cells. We and others have reported that SHIP is rapidly tyrosine phosphorylated upon B cell antigen receptor (BCR) cross-linking and forms a complex with the adapter protein Shc. Here, we report that cross-linking of the BCR induces association between Grb2 and SHIP as well as association between Shc and SHIP. We made use of a Grb2-deficient B cell line to demonstrate both in vitro and in vivo that Grb2 expression is required for the efficient association between Shc and SHIP. The results indicate that SHIP, Shc, and Grb2 form a ternary complex in stimulated B cells, with Grb2 stabilizing the interaction between Shc and SHIP. The interactions between Shc, Grb2, and SHIP are therefore analogous to the interactions between Shc, Grb2, and SOS. Shc and Grb2 may help to localize SHIP to the cell membrane, regulating SHIP's inhibitory function following BCR stimulation.
Recent Developments in Wholesale Payments Systems (1997)

Wholesale payments and settlement systems in G-10 countries have undergone significant change in recent years. Notably, central banks have sought to increase the safety and reliability of these systems. In this article, the author describes two approaches that have been pursued.
Post-operative neuromuscular function of patients receiving non-depolarising muscle relaxants at Universitas Hospital, Bloemfontein, South Africa (2004)

Objectives: To determine the number of patients whose non-depolarising muscle relaxation is adequately reversed. To define factors that contribute to reversal Design: A cross sectional study. Setting: Universitas Hospital recovery room over a 2 month period. Subjects: Patients that received non-depolarising muscle relaxants and who gave informed consent. Outcome measures: A quantitative train-of-four (TOF) ratio was determined within 5 to 15 minutes after arrival in the recovery room. Results: Recovery to TOF >0.9: 57.1% [95% CI 44.8%; 68.9%] patients. Recovery to TOF >0.8:82.9% [95% CI 72.0%; 90.8%] patients. More patients who received vecuronium recovered to a TOF <0.8 compared with atracurium and cis-atracurium (Fisher's exact test, p=0.0151). Conclusions: The muscle relaxation of many patients is not fully reversed in the recovery room, despite a long time lapse since the last drug administration, as well as the administration of neostigmine.
Studies on Highly Stereoselective Addition−Elimination Reactions of 3-(Methoxycarbonyl)-1,2-allen-4-ols with MX. An Efficient Synthesis of 3-(Methoxycarbonyl)-2-halo-1,3(<i>Z</i>)-dienes (2007)

3-(Methoxycarbonyl)-2-halo-1,3(Z)-dienes were prepared highly stereoselectively via SN2'-type addition-elimination reactions of 3-(methoxycarbonyl)-1,2-allen-4-ols with MX. These products may easily undergo Negishi or Sonogashira coupling reactions to yield a series of stereodefined polysubstituted (E)-1,3-dienes.
Quality Properties of Cooked Germinated-brown Rice (2005)

This study was carried rut to investigate the quality properties of two cocked germinated-brown rices(A- and B-product). Color value of A- and B-product were L=68.46, a=0.92, b=9.49 and L=69.32, a=-1.10, b=9.77, respectively. Moisture content of those was . The free sugar contents of A-product were glucose, sucrose, maltose, and those of B-product were glurose, sucrose, maltose, respectively. Vitamin E content in A-product was and in B-product. Total dietary fiber contents were , and , respectively. The DSC(differential scanning calorimetry) characteristics of two cooked germinated-brown rices showed similar pattern. Onset temperature and gelatinization enthalpy of peak 1 were , 5.46 J/g in A-product and , 5.56 J/g in B-product, respectively. Onset temperature and melting enthalpy of peak 2 were , 0.33 J/g in A-product and , 0.37 J/g in B-product, respective1y. Sensory properties of cocked germinated-brown rices were affected by appearance, taste and texture. Palatability score of B-product was higher than that of A-product.
Analysis of ECN on TCP Performance Enhancing Proxy performance for satellite networks (2008)

TCP has been a robust and efficient protocol for data communication in the terrestrial wired networks for more than a couple of decades now. However, TCP is very inefficient over high delay and high-error-rate links that might be found in tactical networks especially tactical SATCOM networks. The Space Communications Protocol Standards (SCPS) organization has proposed a more efficient SCPS-TP protocol, which is a modification of TCP to be used for space environments. The Selective Negative Acknowledgement (SNACK) is an important capability provided by SCPS-TP. Because TCP/IP has gone through many incremental refinements, the protocol itself has grown increasingly complex, which makes analytical modeling quite difficult. As a result, much of the evaluation of TCP/IP QoS mechanism has been done using event driven simulators, such as NS-2 or OPNET. More recently, effort for analytical modeling of the performance of TCP has been active. This analysis has been triggered by the limitations inherent in event driven simulations: • Time consuming for network-centric system engineer to use a packet level granularity when investigating the performance of large, complex networks. • Analytical models help network engineer understand the effectiveness of new mechanisms such as TCP performance enhancing proxy and/or ECN being added to the system and implement better requirements and test cases coverage for different network deployment scenarios. SCPS-TP is typically available from Performance Enhancement Proxy (PEP) which serves as a transport layer proxy to split TCP connections. Explicit Congestion Notification (ECN) is used by routers to signal congestion to end points. The analytical model provides quantitative results to compare the ability of ECN signals vs PEP to distinguish between the packet losses due to network congestion and those due to interference or blockages frequently encountered in tactical wireless networks.
Finite Element Analysis of Sheet Metal Assemblies: Prediction of Product Performance Considering the Manufacturing Process (2014)

SSAB, Uddeholm Tooling, Sandvik Tooling
Dual-Band Microstrip Circular Patch Antenna With Monopolar Radiation Pattern (2015)

A novel dual-band microstrip monopolar patch antenna with zeroth-order resonance is proposed and analyzed in this letter. The antenna is a combination of circular patch antenna with center-fed and circularly periodic mushroom units. With the zeroth-order resonant (ZOR) mode and TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">02</sub> mode, the proposed antenna can create horizontal magnetic loop currents on the patch, which lead to a low profile of 0.02λ at the low frequency band. The radiation mechanism of the proposed antenna is discussed. The antenna is fabricated on a double-layered printed circuit board (PCB) and center-fed by a 50- Ω SMA connector. Simulated and measured results show that the proposed antenna produces a stable monopole-like radiation pattern in two working frequency bands. The corresponding impedance bandwidths and gains are 0.75% and 5.1 dBi for the low frequency band and 20% and a range of 5.8-8 dBi for the high frequency band.