gebhart/patrepeval huggingface dataset:
System design for an autonomous IS-136 personal base station (2002)

The IS-136 North American digital cellular standard defines a digital control channel protocol that encompasses residential base stations, which work with digital cellular handsets to provide enhanced cordless functionality. Such a residential base station is referred to as a personal base station (PBS). With careful design, these IS-136 personal base stations can operate autonomously, measuring their respective RF environments and adaptively selecting their own operating frequencies. This paper describes key system design aspects of the autonomous PBS and its adaptive channel selection algorithms.
An autonomic prediction suite for cloud resource provisioning (2017)

One of the challenges of cloud computing is effective resource management due to its auto-scaling feature. Prediction techniques have been proposed for cloud computing to improve cloud resource management. This paper proposes an autonomic prediction suite to improve the prediction accuracy of the auto-scaling system in the cloud computing environment. Towards this end, this paper proposes that the prediction accuracy of the predictive auto-scaling systems will increase if an appropriate time-series prediction algorithm based on the incoming workload pattern is selected. To test the proposition, a comprehensive theoretical investigation is provided on different risk minimization principles and their effects on the accuracy of the time-series prediction techniques in the cloud environment. In addition, experiments are conducted to empirically validate the theoretical assessment of the hypothesis. Based on the theoretical and the experimental results, this paper designs a self-adaptive prediction suite. The proposed suite can automatically choose the most suitable prediction algorithm based on the incoming workload pattern.
Artificial neural networks for face recognition using PCA and BPNN (2015)

In today's age of automation, face recognition is a vital component for authorization and security. It has received substantial attention from researchers in various fields of science such as biometrics and computer vision. In this paper, a face recognition system using Principal Component Analysis (PCA) with Back Propagation Neural Networks (BPNN) is analysed. A neural based algorithm is presented to recognize the frontal views of faces. The multi-variate data set of face image is reduced using the PCA technique. BPNN is used for training and learning, leading to efficient and robust face recognition. Experiments and testing were conducted over Olivetti Research Laboratory (ORL) Face database. Results indicate that PCA based execution is faster while the recognition accuracy suffers and vice versa for BPNN, thus suggesting a system incorporating both techniques is preferred.
A Multisubscriber Variable-Rate Sampling HCDM System with Dynamic Buffer Control (1984)

In this paper we present a multisubscriber variable-rate sampling hybrid companding delta modulation (HCDM) system for simultaneous transmission of several speech signals. This system employs both the statistical multiplexing and variable-rate sampling schemes. It transmits speech signals synchronously at a fixed rate using a buffer. In this system the sampling rate of each subscriber is varied according to the speech activity and the status of buffer occupancy, and only the speech portion is coded for transmission. To optimize the system performance within the allowed maximum transmission delay (300 ms), an efficient dynamic buffer control algorithm is proposed. When the number of subscribers is six and the transmission rate for each subscriber is 16 kbits/s, the proposed system yields a performance improvement of about 10 dB over the conventional single-subscriber HCDM system. The buffer delay in this case is 150 ms, which gives a perceptually negligible effect.
Interactive time-dependent tone mapping using programmable graphics hardware (2005)

Modern graphics architectures have replaced stages of the graphics pipeline with fully programmable modules. Therefore, it is now possible to perform fairly general computation on each vertex or fragment in a scene. In addition, the nature of the graphics pipeline makes substantial computational power available if the programs have a suitable structure. In this paper, we show that it is possible to cleanly map a state-of-the-art tone mapping algorithm to the pixel processor. This allows an interactive application to achieve higher levels of realism by rendering with physically based, unclamped lighting values and high dynamic range texture maps. We also show that the tone mapping operator can easily be extended to include a time-dependent model, which is crucial for interactive behavior. Finally, we describe the ways in which the graphics hardware limits our ability to compress dynamic range efficiently, and discuss modifications to the algorithm that could alleviate these problems.
Scanning X-ray Microscopy of Living and Freeze-Dried Blood Cells in Two Vanadium-Rich Ascidian Species, Phallusia mammillata and Ascidia sydneiensis samea (2002)

Some ascidians (sea squirts) accumulate the transitional metal vanadium in their blood cells at concentrations of up to 350 mM, about 10(7) times its concentration found in seawater. There are approximately 10 different types of blood cell in ascidians. The identity of the true vanadium-containing blood cell (vanadocyte) is controversial and little is known about the subcellular distribution of vanadium. A scanning x-ray microscope installed at the ID21 beamline of the European Synchroton Radiation Facility to visualize vanadium in ascidian blood cells. Without fixation, freezing or staining realized the visualization of vanadium localized in living signet ring cells and vacuolated amoebocytes of two vanadium-rich ascidian species, Phallusia mammillata and Ascidia sydneiensis samea. A combination of transmission and fluorescence images of signet ring cells suggested that in both species the vacuoles contain vanadium.
PROLACTIN STIMULATES DOPAMINE RELEASE FROM MALE BUT NOT FROM FEMALE RAT STRIATAL TISSUE SUPERFUSED IN VITRO (1982)

Direct prolactin (PRL) effects on dopamine (DA) release from fragments of rat striatal tissues were studied by the in vitro superfusion technique. The DA collected in the superfusates was quantified by a radio-enzymatic assay. In the present experiments, intact and one-week gonadectomized adult male and female rats were used. The spontaneous release of DA from male and female rat striatal tissues was relatively stable after a 60 min equilibration period. The basal release rate of DA from striatal tissues from intact males infused only with medium over a 76 min period was 22.5 +/- 0.7 pg/mg/min (X +/- SE of 4 experiments). Infusion of highly purified PRL (NIAMDD-rPRL-I-5) at a concentration of 1 microgram/ml for 24 min significantly augmented DA release from striatal tissues from intact and castrated males (167 +/- 15% (n=6) and 203 +/- 32% (n=4), respectively) over pre-infusion basal levels. Infusion with heat-denatured PRL or other proteins had no effect on DA release from intact male striatal tissues. In parallel experiments, infusion of PRL at 0.1, 1 or 10 micrograms/ml concentrations for 24 min had no effect on the basal release of DA from striatal tissues from intact and ovariectomized females. These results demonstrate that an absolute sexual difference exists in the responsiveness of rat striatal tissues to PRL infused in vitro. Interestingly, this sexual difference was not modified by short-term castration.
Enzymatic modification of proteins with a geranylgeranyl isoprenoid. (1991)

The prenylation of several proteins involved in oncogenesis and signal transduction plays an essential role in regulating their biological activities. Two distinct isoprenoids are known to be involved in this modification, the 15-carbon farnesyl and 20-carbon geranylgeranyl groups. Thus far, identified farnesylated proteins contain methionine or serine at the COOH terminus, while those modified by geranylgeranyl end in leucine. This report describes the characterization of an enzyme activity that transfers the geranylgeranyl group to candidate proteins. The enzyme, termed a "protein geranylgeranyltransferase," exhibits a marked preference for substrate proteins that contain leucine at the COOH terminus. In fact, the enzyme will efficiently modify a normally farnesylated protein, Ha-ras, if its COOH-terminal amino acid is switched from serine to leucine. Additional studies characterize this enzyme and suggest that it is responsible for the geranylgeranyl modification of a number of GTP-binding proteins (or their subunits) that contain a consensus prenylation sequence ending in leucine.
Receiver design for optical fiber systems (1977)

This paper is a tutorial review of the theory and practice of receiver design for optical fiber communication systems. Topics discussed include fundamental limitations on performance; design and performance limitations of laboratory receivers; and practical design trade-offs and their effects on the performance of real system receivers.
Spectral movement function and its application to speech recognition (2003)

The authors propose a new mathematical method for extracting spectral movement in a time-sequence of speech spectrum. The spectral movement is characterized by the time and frequency derivative of a time-sequence of log spectrum envelopes. Spectral movement direction, the movement toward a higher or lower frequency region, can be identified by the sign of the proposed function. A parameter which can be used for speech segmentation is derived form this function A distance measure for speech recognition is also derived as the Euclidean distance between two spectral movement patterns extracted by the proposed function. This distance is easily calculated using cepstrum coefficients. Speech recognition results using dynamic time warping template matching with this new distance measure indicate that recognition error rate can be reduced to less than half compared with the conventional Euclidean cepstrum distance measure.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A Biomechanical Analysis of Two Biceps Tenodesis Fixation Techniques (2005)

The surgeon treating biceps tenodesis may wish to choose a fixation technique with higher initial strength (interference screw instead of double suture anchor) to lessen the chance of early failure, particularly if the patient begins early active elbow flexion.
Natural Pig Plasma Immunoglobulins Have Anti-Bacterial Effects: Potential for Use as Feed Supplement for Treatment of Intestinal Infections in Pigs (2016)

There is an increasing demand for non-antibiotics solutions to control infectious disease in intensive pig production. Here, one such alternative, namely pig antibodies purified from slaughterhouse blood was investigated in order to elucidate its potential usability to control post-weaning diarrhoea (PWD), which is one of the top indications for antibiotics usage in the pig production. A very cost-efficient and rapid one-step expanded bed adsorption (EBA) chromatography procedure was used to purify pig immunoglobulin G from slaughterhouse pig plasma (more than 100 litres), resulting in >85% pure pig IgG (ppIgG). The ppIgG thus comprised natural pig immunoglobulins and was subsequently shown to contain activity towards four pig-relevant bacterial strains (three different types of Escherichia coli and one type of Salmonella enterica) but not towards a fish pathogen (Yersinia ruckeri), and was demonstrated to inhibit the binding of the four pig relevant bacteria to a pig intestinal cell line (IPEC-J2). Finally it was demonstrated in an in vivo weaning piglet model for intestinal colonization with an E. coli F4+ challenge strain that ppIgG given in the feed significantly reduced shedding of the challenge strain, reduced the proportion of the bacterial family Enterobacteriaceae, increased the proportion of families Enterococcoceae and Streptococcaceae and generally increased ileal microbiota diversity. Conclusively, our data support the idea that natural IgG directly purified from pig plasma and given as a feed supplement can be used in modern swine production as an efficient and cost-effective means for reducing both occurrence of PWD and antibiotics usage and with a potential for the prevention and treatment of other intestinal infectious diseases even if the causative agent might not be known.
Vital dye labelling of <i>Xenopus laevis</i> trunk neural crest reveals multipotency and novel pathways of migration (1993)

Although the Xenopus embryo has served as an important model system for both molecular and cellular studies of vertebrate development, comparatively little is known about its neural crest. Here, we take advantage of the ease of manipulation and relative transparency of Xenopus laevis embryos to follow neural crest cell migration and differentiation in living embryos. We use two techniques to study the lineage and migratory patterns of frog neural crest cells: (1) injections of DiI or lysinated rhodamine dextran (LRD) into small populations of neural crest cells to follow movement and (2) injections of LRD into single cells to follow cell lineage. By using non-invasive approaches that allow observations in living embryos and control of the time and position of labelling, we have been able to expand upon the results of previous grafting experiments. Migration and differentiation of the labelled cells were observed over time in individual living embryos, and later in sections to determine precise position and morphology. Derivatives populated by the neural crest are the fins, pigment stripes, spinal ganglia, adrenal medulla, pronephric duct, enteric nuclei and the posterior portion of the dorsal aorta. In the rostral to mid-trunk levels, most neural crest cells migrate along two paths: a dorsal pathway into the fin, followed by presumptive fin cells, and a ventral pathway along the neural tube and notochord, followed by presumptive pigment, sensory ganglion, sympathetic ganglion and adrenal medullary cells. In the caudal trunk, two additional paths were noted. One group of cells moves circumferentially within the fin, in an arc from dorsal to ventral; another progresses ventrally to the anus and subsequently populates the ventral fin. By labelling individual precursor cells, we find that neural tube and neural crest cells often share a common precursor. The majority of clones contain labelled progeny cells in the dorsal fin. The remainder have progeny in multiple derivatives including spinal ganglion cells, pigment cells, enteric cells, fin cells and/or neural tube cells in all combinations, suggesting that many premigratory Xenopus neural crest precursors are multipotent.
An X-band circularly polarized reflectarray using split square ring elements and the modified element rotation technique (2008)

Using split square ring elements and the modified element rotation technique, an X-band circularly polarized reflectarray is designed and implemented through microstrip technology. At 8.4 GHz, the reflectarray prototype has a gain of 30.4 dB and an aperture efficiency of 53.7%. The fractional axial ratio bandwidth is 6%, while the 3 dB gain bandwidth is 7%.
Significance of 1,25-dihydroxyvitamin D3 receptor in primary breast cancers. (1986)

Specific high affinity receptors for 1,25-dihydroxyvitamin D3 are present in several human breast cancer cell lines, and this hormone can regulate the replication of these cells. These receptors are also present in primary breast carcinomas. The present study has resulted from the follow-up for up to 68 mo of 263 women, who had had 1,25-dihydroxyvitamin D receptor (1,25-DR) levels measured in their primary tumors. Survival data on 191 women were correlated with the levels of 1,25-DR and other steroid hormone receptors, menopausal status, and age by life table analysis. Survival was not affected by 1,25-DR level in either absolute terms or relative levels. However, the late development of lymph node metastases in eight of 47 individuals was correlated with the 1,25-DR level (P = 0.05). There was no correlation between 1,25-DR or other hormone receptor levels and the development of hypercalcemia or bone metastases in the small number of individuals so affected. As we had observed previously, there was no correlation between the level of 1,25-DR and that of the other steroid hormones. These data show that the presence of 1,25-DR in primary breast cancers is independent of other prognostic indicators and, inasmuch as it correlated with late lymph node metastasis, may be an adverse prognostic indicator.
Program and Abstracts for 2017 Annual Meeting of the Society for Glycobiology (2017)

LNFPIII-Dex conjugates function in vivo to normalize metabolic function in High-Fat Diet Obese mice
Titanium‐Based Molecular Squares and Rectangles: Syntheses by Self‐Assembly Reactions of Titanocene Fragments and Aromatic N‐Heterocycles (2004)

This paper reports on the potential of titanium compounds as building blocks for supramolecular polygons. Self-assembly reactions of low-valent titanocene units and N-heterocyclic bridging ligands lead to novel titanium-based supramolecular squares. Pyrazine (3), 4,4'-bipyridine (4), and tetrazine (5) were used as bridging ligands, and the acetylene complexes [Cp2Ti{eta2-C2(SiMe3)2}] (1) and [(tBuCp)2Ti{eta2-C2(SiMe3)2}] (2) as sources of titanocene fragments. Molecular rectangles can be synthesized by stepwise reduction of the titanocene dichlorides [Cp(2)TiCl2] and [(tBuCp)2TiCl2] and consecutive coordination of two different bridging ligands. The resulting complexes are the first examples of molecular rectangles containing bent metallocene corner units. Single-crystal X-ray analyses of the tetranuclear compounds revealed the geometric properties of the molecular polygons in the solid state. Comparison of bond lengths and angles in coordinated and free ligands reveals the reduced state of the bridging ligand in the low-valent titanium compounds. The syntheses and properties of these novel, highly air- and moisture-sensitive compounds are discussed.
A Rare Presentation of Pellet Injury in the Neck (2011)

Penetrating neck injuries are dangerous and deserve emergency treatment by virtue of the vital structures present underneath. There is a potential risk of unrecognized vascular injury and retained foreign bodies with their associated complications in these wounds. Therefore, an early diagnostic workup to localize the site of injury and an immediate neck exploration are important.
MIMO OTA test for a mobile station performance evaluation (2016)

The antenna is one of the most important components of mobile stations, since antenna design has a significant effect on mobile station performance and the end user's experience. The industry therefore needs effective test methods to evaluate the mobile station's overall radiated end-to-end performance. Traditional receiver testing used cabled signals which bypass the antennas, but over the air (OTA) testing evaluates the device's overall radiated performance, including the impact of the antennas. Conformance tests for single antenna devices have been in existence since 2001. These tests measure the total radiated sensitivity (TRS) of the receiver and the total radiated power (TRP) of the transmitter. TRS is also known as total isotropic sensitivity (TIS).
ChemInform Abstract: The Influence of Substrates on the Electrochemical Deposition and Dissolution of Aluminum in NaAlCl4 Melts (1991)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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.
Surface-energy-dependent field-effect mobilities up to 1 cm2/V s for polymer thin-film transistor (2009)

The field-effect mobility of a liquid-crystalline semiconducting polymer, poly(2,5-bis(3-hexadecylthiophene-2-yl)thieno[3,2-b]thiophene) (PB16TTT), has depended significantly on the surface energies of self-assembled monolayers (SAMs) formed on insulating layers. Using a SAM with fluoroalkyl groups, with a low surface energy of 13.3 mN/m, the mobility of PB16TTT reached as high as 1 cm2/V s. These results indicate that an edge-on orientation of the polymer chains progresses more favorably on the surfaces with low surface energies via the liquid-crystalline phase.
Entity-Relationship versus Object-Oriented Modeling and the Underlying DBMS (1992)

Despite the impressive accomplishments in relational database research, greater support is needed for persistence of the new types of data encountered with object-oriented programming. The concept of object-orientation is not new in the realm of programming; however, its utilization in database management systems is still immature. Regardless of this fact, there is an urgency for object-oriented database technology. With this increase in demand for the next generation databases comes the need to examine object-oriented data modeling versus the conventional entity-relationship modeling of relational database design. This thesis objective is to analyze both paradigms to determine if object-oriented modeling can significantly improve Department of Defense systems. After analyzing the entity-relationship paradigm and a representation of object-oriented modeling techniques we see a unifying of conceptual models encompassing both application and database development. Object-orientation's higher level of abstraction enables modeling of all problem domains and provides a common language between developer and client. The critical issue in adoption of the object-oriented paradigm becomes not whether to adopt, but how to adopt object-oriented techniques. The benefits of object-oriented technology close the semantic gap by helping the computer to 'see' things our way.
Data communication along the drill string using acoustic waves (2004)

A new method of wireless data telemetry in oil well services uses compressional acoustic waves to transmit data along the drill string. Coded wave trains are produced by an acoustic transducer, travel through the drill string and are subsequently decoded to recover the data. Normal drilling operations produce in-band acoustic noise at multiple sources at intensities comparable to the transducer output, while propagation through the long drill string further degrades the signal. We describe a theoretical channel model, and, based on this model, demonstrate that a single receiver system has a capacity of several hundred bits per second in such noisy drilling conditions. We analyze a two-receiver scheme that exploits the fact that the dominant noise source and the signal propagate in opposite directions. We show that with two receivers this dominant noise can be cancelled, which results in a significant improvement in capacity over the single receiver.
The first study of surface modified silica nanoparticles in pressure-decreasing application (2015)

Hydrophobic silica nanoparticles were prepared through surface modification of silica nanoparticles by (dimethyldichlorosilane) DMCS for pressure-decreasing in oilfield.
Demonstration of 2-Tbit/s Data Link using Orthogonal Orbital-Angular-Momentum Modes and WDM (2011)

We present a 2-Tbit/s data link using two orthogonal orbital angular momentum (OAM) spatial modes with 25 wavelength division multiplexed (WDM) channels on each mode. We demonstrate the functionality and quantify performance for directly detected 40-Gbit/s NRZ-DPSK, 40-Gbit/s NRZ-OOK and coherently-detected 10-Gbaud/s QPSK modulation formats.