gebhart/patrepeval huggingface dataset:
Intelligent Reflecting Surface-Assisted Multi-User MISO Communication: Channel Estimation and Beamforming Design (2020)

The concept of reconfiguring wireless propagation environments using intelligent reflecting surfaces (IRS)s has recently emerged, where an IRS comprises of a large number of passive reflecting elements that can smartly reflect the impinging electromagnetic waves for performance enhancement. Previous works have shown promising gains assuming the availability of perfect channel state information (CSI) at the base station (BS) and the IRS, which is impractical due to the passive nature of the reflecting elements. This paper makes one of the preliminary contributions of studying an IRS-assisted multi-user multiple-input single-output (MISO) communication system under imperfect CSI. Different from the few recent works that develop least-squares (LS) estimates of the IRS-assisted channel vectors, we exploit the prior knowledge of the large-scale fading statistics at the BS to derive the Bayesian minimum mean squared error (MMSE) channel estimates under a protocol in which the IRS applies a set of optimal phase shifts vectors over multiple channel estimation sub-phases. The resulting mean squared error (MSE) is both analytically and numerically shown to be lower than that achieved by the LS estimates. Joint designs for the precoding and power allocation at the BS and reflect beamforming at the IRS are proposed to maximize the minimum user signal-to-interference-plus-noise ratio (SINR) subject to a transmit power constraint. Performance evaluation results illustrate the efficiency of the proposed system and study its susceptibility to channel estimation errors.
A neutral lipophilic technetium-99m complex for regional cerebral blood flow imaging. (1990)

Technetium-99m-DMG-2MP (Chloro[bis[2,3-butanedionedioxime(1-)-0][2,3- butanedionedioximato (2-)-N,N',N'',N''',N'''',N'''''] (2-methylpropyl borato (2-))technetium]), also known as SQ 32097 is a member of a family of neutral lipophilic compounds generally known as boronic acid adducts of technetium dioxime complexes (BATOs). After i.v. administration, the concentration of [99mTc]DMG-2MP in various regions of the brain appears to be proportional to blood flow. In rats, 1.1% ID was in the brain at 5 min postinjection when the blood contained less than 3% ID. Over 24 hr excretion was 59% in the feces and 23% in the urine. The activity in monkey brain at 5 min was 2.8% ID and it cleared with a t1/2 of 86 min. Autoradiographs of monkey brain sections showed excellent regional detail with a gray/white ratio of 3.6 at 10 min. The distribution of [99mTc]DMG-2MP in the monkey brain corresponds to the known cytoarchitectural pattern of cerebral glucose metabolism. The properties of [99mTc]DMG-2MP make it a potentially useful agent for cerebral perfusion imaging in man.
Subwavelength Si nanowire arrays for self-cleaning antireflection coatings (2010)

Galvanic wet etching was adopted to fabricate Si nanowire arrays (NWAs) as a near-perfect subwavelength structure (SWS), which is an optically effective gradient-index antireflection (AR) surface and also exhibits super-hydrophobicity with an extremely high water contact angle (159°). Fresnel reflection and diffuse reflection over the broad spectrum can be eliminated by a Si NWA AR coating. Moreover, Si NWA SWSs show polarization-independent and omnidirectional AR properties. The wavelength-averaged specular and diffuse reflectance of Si NWA SWSs are as low as 0.06% and 2.51%, respectively. The effects of the surface profile of this biomimetic SWS on the AR and super-hydrophobic properties were investigated systematically.
Cloning of cDNAs that encode human mast cell carboxypeptidase A, and comparison of the protein with mouse mast cell carboxypeptidase A and rat pancreatic carboxypeptidases. (1989)

Human skin and lung mast cells and rodent peritoneal mast cells contain a carboxypeptidase in their secretory granules. We have screened human lung cDNA libraries with a mouse mast cell carboxypeptidase A (MC-CPA) cDNA probe to isolate a near-full-length cDNA that encodes human MC-CPA. The 5' end of the human MC-CPA transcript was defined by direct mRNA sequencing and by isolation and partial sequencing of the human MC-CPA gene. Human MC-CPA is predicted to be translated as a 417 amino acid preproenzyme which includes a 15 amino acid signal peptide and a 94 amino acid activation peptide. The mature human MC-CPA enzyme has a predicted size of 36.1 kDa, a net positive charge of 16 at neutral pH, and 86% amino acid sequence identity with mouse MC-CPA. DNA blot analyses showed that human MC-CPA mRNA is transcribed from a single locus in the human genome. Comparison of the human MC-CPA with mouse MC-CPA and with three rat pancreatic carboxypeptidases shows that these enzymes are encoded by distinct but homologous genes.
A 1GB/S SCI link in 0.8μm BiCMOS (2002)

It has become increasingly evident that the performance demands of modern microprocessors are rapidly outstripping the capability of traditional multidrop busses to support the necessary data bandwidth, especially in symmetric multi-processor (SMP) configurations. The definition of a replacement for the traditional bus with a packetized network based on unidirectional point-to-point links was undertaken under the auspices of the IEEE Microprocessor Standards Committee, resulting in the IEEE 1596-1992 Scalable Coherent Interface Standard (SCI). This chip is a prototype fabricated to evaluate the feasibility of implementing a full-speed SCI link in standard 0.8/spl mu/m BiCMOS.
Accreditation of Educational Programs in Nuclear Medicine Technology (1974)

The Joint Review Committee on Educational Programs in Nuclear Medicine Technology is the body which approves training programs in nuclear medicine technology. The Committee consists of two representatives from the SNM, SNMT, ACR, ASRT, ASCP, and ASMT. Dr. Warren Ball, who is the AMA Staff Liaison with the Committee, presented the following description of the activities and responsibilities of the Committee at the Plenary Session of the First Winter Meeting of the Technologist Section in New Orleans.
Multiresolution analysis. Haar bases, and self-similar tilings of R/sup n/ (1992)

Orthonormal bases for L/sup 2/(R/sup n/) are constructed that have properties that are similar to those enjoyed by the classical Haar basis for L/sup 2/(R). For example, each basis consists of appropriate dilates and translates of a finite collection of 'piecewise constant' functions. The construction is based on the notion of multiresolution analysis and reveals an interesting connection between the theory of compactly supported wavelet bases and the theory of self-similar tilings.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Copolymers of <i>N</i>‐isopropylacrylamide, HEMA‐lactate and acrylic acid with time‐dependent lower critical solution temperature as a bioresorbable carrier (2004)

Abstract Copolymers of N ‐isopropylacrylamide (NIPAAm), 2‐hydroxyethyl methacryl lactate (HEMA‐lactate) and acrylic acid (AAc) were prepared, with varying mole ratios of monomers, to develop a bioresorbable in‐situ ‐gelling material with a time‐dependent lower critical solution temperature (LCST). The synthesized copolymers were characterized by nuclear magnetic resonance, gel permeation chromatography and differential scanning calorimetry. In 0.1 M phosphate‐buffered saline solution of pH 7.4, these copolymers had an LCST below body temperature. The LCST decreased as the HEMA‐lactate content of the copolymers was increased. Furthermore, in these conditions, the LCST of the copolymers exhibited time‐dependent properties, due to hydrolysis of the HEMA‐lactate. As the HEMA‐lactate hydrolyzed, the copolymers became more hydrophilic, thereby leading to an increase in LCST. This hydrophilicity caused copolymers of approximately 6 mol% of AAc to exhibit an LCST above body temperature after hydrolysis. In neutral solution, copolymers with varying mol% of AAc saw their LCST rise above 37 °C within one to ten days, depending upon the HEMA‐lactate/NIPAAm ratio, due to the complete hydrolysis of the HEMA‐lactate. The above properties indicate that these copolymers would be useful for drug delivery because their variable LCST makes them bioresorbable. Copyright © 2004 Society of Chemical Industry
The use of geophysics in abnormal pressure problems (1969)

Mutual arrangement, or packing, of α-helices in proteins depends on several factors, but, tight packing and the chemical nature of the polypeptide chain are the most important. This study shows, for the first time, that the torsion packing angles between axes of α-helices depend on their length. A database of helical pairs formed by two connected and juxtaposed α-helices has been compiled using the Protein Data Bank. These helical pairs have been subdivided into four types: (1) 10474 pairs formed by long helices; (2) 3665 pairs in which the first α-helix is long and the second is short; (3) 3648 pairs in which the first α-helix is short and the second is long; 4) 1895 pairs in which both helices are short. Analysis of the database showed that most helical pairs in which both the helices are long form α-hairpins having interhelical packing angles of Ω. ≈ 20°. Most helical pairs in which one α-helix is long and the other is short or both helices are short form αα-corners having orthogonal (Ω ≈ -70°...-90°) or slanted (Ω ≈ -50°) packing of α-helices. The possible reasons for this relationship between interhelical angles (Ω) and the length of α-helices are discussed. These results are of great importance in protein modeling and prediction since they enable the determination of the mutual arrangement of α-helices in protein molecules.
Synthesis of new crosslinked porous ammonium‐based poly(ionic liquid) and application in CO<sub>2</sub> adsorption (2013)

A new poly(ionic liquid) of N , N ‐methylenebisacrylamide (MBA)‐crosslinked‐poly(4‐vinylbenzyltriethylammonium hexafluorophosphate)(MBA‐crosslinked‐P[VBTEA][PF 6 ]) is prepared through the ion exchange of KPF 6 with the precursor of MBA‐crosslinked‐P[VBTEA][Cl]; the precursor is synthesized by 4‐vinylbenzyltriethylammonium chloride and MBA via inverse suspension polymerization. MBA‐crosslinked‐P[VBTEA][PF 6 ] is a thermally stable (decomposes at nearly 300°C) and porous (apparent porosity of 64.3% and specific surface of 39.12 m 2 /g) polymer particle with high purity, as indicated by Fourier transformed infrared, energy dispersive spectroscopy, thermogravimetric, scanning electron microscopy, and porous analyses. It is observed that MBA‐crosslinked‐P[VBTEA][PF 6 ] has good CO 2 adsorption capability of 14.04 mg/g at 0.2 MPa and 25°C, and can be recovered by desorption at vacuum and 80°C, and reused with 99% CO 2 adsorption after four cycles. POLYM. ENG. SCI., 54:59–63, 2014. © 2013 Society of Plastics Engineers
Graphical animation of behavior models (2000)

Graphical animation is a way of visualizing the behavior of design models. This visualization is of use in validating a design model against informally specified requirements and in interpreting the meaning and significance of analysis results in relation to the problem domain. In this paper we describe how behavior models specified by Labeled Transition Systems (LTS) can drive graphical animations. The semantic framework for the approach is based on Timed Automata. Animations are described by an XML document that is used to generate a set of JavaBeans. The elaborated JavaBeans perform the animation actions as directed by the LTS model.
The Vision of Ralph Hawkes (1966)

“Fools will never realise how merit and luck are chained together”. These wise words of Goethe have never been proved more convincingly than by the development of Boosey & Hawkes in the last thirty years. When, after the second world war, Boosey & Hawkes emerged as one of the leading international publishers there was much talk of luck and fortuitous opportunity. No doubt luck and opportunity played a part in the destinies of the house but neither would have come its way if they had not been invited and indeed provoked by a consistent policy going back to the early years of this century. After the sudden death of Oliver Hawkes, Ralph Hawkes took charge of the publishing activities of Hawkes & Son as a very young man. While continuing the lucrative business of his father he was determined to find his way into serious music as well. I met him for the first time in 1923 when he came to Vienna and applied for the sole agency of Universal Edition and Wiener Philharmonischer Verlag, at that time the only competitor to Eulenburg's pocket scores. At about the same time he also acquired the sole agency of Editions Belaieff of Leipzig and of Edition Russe de Musique and Gutheil of Paris and Berlin, both owned by Serge and Natalie Koussevitzky. Thus Hawkes & Son became connected with a large and important section of the serious contemporary repertoire, including the major works of Stravinsky, Prokofiev, Rachmaninov, Rimsky-Korsakov, Glazunov, Mahler, Schoenberg, Alban Berg, Webern, Bartók, Kodály and many others. This was the very root of later developments, and the opportunities which were to arise had every reason to present themselves to Ralph Hawkes.
Crystallographic characterization of YBa2Cu3O7-x prepared by the quench and melt growth (QMG) process. (1990)

Quench and Melt Growth (QMG) Process.
A comparison of 802.11ah and 802.15.4 for IoT (2016)

The emerging IEEE 802.11ah is a promising communication standard that supports a massive number of heterogeneous devices in the Internet of Things (IoT). It provides attractive features like improved scalability, low energy consumption, and coverage of large area. In this paper, we analyze the performance of IEEE 802.11ah, and compare it with a prominent alternative, the IEEE 802.15.4. The simulation results show that the new 802.11ah standard performs better than the 802.15.4 in terms of association time, throughput, delay, and coverage range.
Development of a vehicle height sensor for active suspension (2007)

This paper describes development method of a vehicle height sensor for active suspension controlled by using magnetic rheological fluid. Most of the current vehicle height sensors have been installed at external place of the damper and connected to that by linkage structures so far. This mechanism has disadvantage of instability and inaccuracy. The proposed sensor could be installed at inside of the MR CDC dampers so that there is no misalignment between the center axis of the damper and the vehicle height measuring position. The sensor mechanism has been designed based upon the well known magnetic field induced position sensor principle used in LVDT(linear variable displacement transducer). Dimensional parameters of the sensor could be determined by analyzing the magnetic phenomena around a sensor coil assembly and a sensor rod. Sensor output signal processing circuits have been also developed in order to have fast response and communicate with an active damper ECU. A series of experiments have been conducted to evaluate the steady state as well as the transient state performances. As the results, the developed sensors show that the accuracy is under plusmn0.5%, the resolution is 0.1 mm and the response time is up to 0.2 msec.
Integration of Multidimensional Interaction Devices in Real‐Time Computer Graphics Applications (2000)

Modern CAD/CAM and Virtual Reality applications cannot be imagined without the new class of interaction devices allowing the user direct interaction with computer generated scenes. Integrating such devices into existing or newly developed software is a complex task for a number of reasons. The set of devices is very heterogeneous in functionality and data formats. Most devices are difficult to handle by inexperienced users or need careful handling and calibration. After reviewing a number of existing systems, a novel approach to this problem is presented. A device interface that allows the flexible, hardware independent configuration and error robust operation, even reconfiguration and exchanges of interaction devices during operation, will be introduced. The system structure is discussed and novel communication protocols reducing latency are invented.
BIOLOGICAL SYNTHESIS AND CHARACTERIZATION OF COPPER OXIDE NANOPARTICLES USING ANTIGONON LEPTOPUS LEAF EXTRACT AND THEIR ANTIBACTERIAL ACTIVITY (2016)

During the last two decades, the biosynthesis of nanoparticles has received considerable attention due to the growing need to develop environmentally sociable technologies in nanoparticle synthesis. The
A comparison of VLSI architecture of finite field multipliers using dual, normal, or standard bases (1988)

Three different finite-field multipliers are presented: (1) a dual-basis multiplier due to E.R. Berlekamp (1982); the Massey-Omura normal basis multiplier; and (3) the Scott-Tavares-Peppard standard basis multiplier. These algorithms are chosen because each has its own distinct features that apply most suitably in particular areas. They are implemented on silicon chips with NMOS technology so that the multiplier most desirable for VLSI implementation can readily be ascertained.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
On accommodating mobile hosts in an integrated services packet network (2002)

This paper considers the support of real-time applications to mobile hosts in an integrated services packet network. We have proposed a service model for mobile hosts that can support adaptive applications which can withstand a wide range of available bandwidth, as well as applications which require mobility independent service guarantees. We describe an admission control scheme and a reservation protocol for implementing this service model. Our admission control scheme achieves high utilization of network resources.
The immobilization of enzymes on nylon structures and their use in automated analysis (1972)

1. Glucose oxidase (EC 1.1.3.4) and urease (EC 3.5.1.5) were covalently attached through glutaraldehyde to low-molecular-weight nylon powder. 2. Immobilized derivatives of glucose oxidase and urease were prepared by cross-linking the respective enzymes within the matrix of a nylon membrane. 3. An improved process is described for the immobilization of glucose oxidase and urease on the inside surface of partially hydrolysed nylon tube. 4. Automated analytical procedures are described for the determination of glucose with each of the three immobilized glucose oxidase derivatives and for the determination of urea with each of the three immobilized urease derivatives. 5. The efficiencies of the three immobilized enzyme structures as reagents for the automated determination of their substrates were compared.
Effect of primer mismatch, annealing temperature and PCR cycle number on 16S rRNA gene-targetting bacterial community analysis (2007)

In the attempt to explore complex bacterial communities of environmental samples, primers hybridizing to phylogenetically highly conserved regions of 16S rRNA genes are widely used, but differential amplification is a recognized problem. The biases associated with preferential amplification of multitemplate PCR were investigated using 'universal' bacteria-specific primers, focusing on the effect of primer mismatch, annealing temperature and PCR cycle number. The distortion of the template-to-product ratio was measured using predefined template mixtures and environmental samples by terminal restriction fragment length polymorphism analysis. When a 1 : 1 genomic DNA template mixture of two strains was used, primer mismatches inherent in the 63F primer presented a serious bias, showing preferential amplification of the template containing the perfectly matching sequence. The extent of the preferential amplification showed an almost exponential relation with increasing annealing temperature from 47 to 61 degrees C. No negative effect of the various annealing temperatures was observed with the 27F primer, with no mismatches with the target sequences. The number of PCR cycles had little influence on the template-to-product ratios. As a result of additional tests on environmental samples, the use of a low annealing temperature is recommended in order to significantly reduce preferential amplification while maintaining the specificity of PCR.
An effective way to hire technical staff (1986)

Article An effective way to hire technical staff Share on Author: Dianna Franklin University of Houston, Houston, TX University of Houston, Houston, TXView Profile Authors Info & Claims SIGUCCS '86: Proceedings of the 14th annual ACM SIGUCCS conference on User services: setting the directionSeptember 1986 Pages 137–142https://doi.org/10.1145/324239.324280Online:01 September 1986Publication History 0citation362DownloadsMetricsTotal Citations0Total Downloads362Last 12 Months8Last 6 weeks0 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access
The enzymatic conversion of heme to bilirubin by microsomal heme oxygenase. (1968)

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Mechanics of Hydraulic Fracture Growth from a Borehole (2010)

Abstract A numerical study of hydraulic fracture growth from a circular borehole under plane strain conditions is presented. The coupling of fluid flow and rock deformation plays a key role in the fracture reorientation process and in determining the curved fracture path formed. The fracture path is given as a function of both the nondimensional parameter β, which has been previously described in the literature and applies to fracture growth that is dominated by rock fracture toughness, and the recently derived nondimensional parameter χF, which applies to fracture growth that is dominated by fluid viscous dissipation. The results show that the values of β and χF determine the fracture trajectory as the fracture grows from the wellbore and eventually reorients parallel to the maximum far-field stress direction. Thus, for viscous dominated conditions that are typical of field application of hydraulic fracturing for stimulation, χF is a measure of the development of nearwellbore fracture tortuosity. A larger value of χF implies a stronger curvature and fracture tortuosity. The value of χF is reduced by increasing the viscosity and injection rate of the fluid.
A Radiation Hardened by Design CMOS ASIC for Thermopile Readouts (2012)

A radiation hardened by design (RHBD) mixed-signal application specific integrated circuit (ASIC) has been designed for a thermopile readout for operation in the harsh Jovian orbital environment. The multi-channel digitizer (MCD) ASIC includes 18 low noise amplifier channels which have tunable gain/filtering coefficients, a 16-bit sigma-delta analog-digital converter (SDADC) and an on-chip controller. The 18 channels, SDADC and controller were designed to operate with immunity to single event latchup (SEL) and to at least 10 Mrad total ionizing dose (TID). The ASIC also contains a radiation tolerant 16-bit 20 MHz Nyquist ADC for general purpose instrumentation digitizer needs. The ASIC is currently undergoing fabrication in a commercial 180 nm CMOS process. Although this ASIC was designed specifically for the harsh radiation environment of the NASA led JEO mission it is suitable for integration into instrumentation payloads 011 the ESA JUICE mission where the radiation hardness requirements are slightly less stringent.