gebhart/patrepeval huggingface dataset:
System level performance evaluation of EGPRS in GSM macro-cell environments (2002)

This paper provides-under a simulation environment-the downlink system level performance of EGPRS Phase I in GSM interference limited macro-cellular environments. Various scenarios are investigated by considering the throughput and delay statistics at the system level and user level. An interference limited macro-cellular environment; populated with mobiles operating with perfect receiver under the Tu50-NoFH radio condition and receiving e-mail, is considered for two cell re-use pattern scenarios; 4/spl times/3 and 1/spl times/3 (frequency hopping). The main input parameters varied to evaluate the performance under the above scenarios include operating BLER and the number of time slots allocated to EGPRS on a GSM carrier. The results represent the perfect link adaptation (LA) case with no incremental redundancy (IR).
Compact 90° trench-based splitter for silicon-on-insulator rib waveguides (2007)

Compact silicon-on-insulator (SOI) rib waveguide 90 degrees splitters based on narrow, high-aspect ratio (~10:1) trenches are designed and experimentally demonstrated. The splitter area is only 11 mum x 11 mum. Splitter optical performance is investigated as a function of both trench width and refractive index of the trench fill material. We examine three trench fill materials, air (n=1.0), SU8 (n=1.57), and index matching fluid (n=1.733), and find good agreement between experimental measurement and three dimensional (3D) finite difference time domain (FDTD) simulation. A splitting ratio of 49/51 (reflection/transmission) is measured for an index fluid-filled trench 82nm wide.
Psychological factors influencing perceived exertion (1973)

A series of experiments involving the interaction of perceived exertion, selected psychological states and traits, and metabolic responsivity to bicycle ergometry are reviewed. The findings indicate that normal subjects are capable of consistently identifying differences in work load by means of Borg's psychophysical category scale, and these subjective estimates mirror the actual metabolic cost of the work being performed. The exception to this generalization is the case where the subject is neurotic, anxious or depressed since such individuals appear to have difficulty in their perceptual processing of work intensity. Extroverts tend to underate work intensity at heavier loads, and their stated work preference is higher for prolonged work than it is for introverted subjects. Pre-exercise self reports of somatic perception correlated with perceived exertion across a 30-minute work bout. Various psychological states and traits seem to play a role in the perceptual processing of information relating to muscular work, and both metabolic and perceptual responsivity of exercising subjects has been manipulated by means of hypnotic suggestion. It is concluded that a psychobiologic approach to perceived exertion is the most efficacious.
Gravity insensitive flexure pivots for watch oscillators (2016)

Classical pivots have frictional losses leading to the limited quality factor of oscillators used as time bases in mechanical watches. Flexure pivots address these issues by greatly reducing friction. However, they have drawbacks such as gravity sensitivity and limited angular stroke. This paper analyses these problems for the cross-spring flexure pivot and presents an improved version addressing these issues. We first show that the cross spring pivot cannot be both insensitive to gravity and have a long stroke. A 10 ppm sensitivity to gravity acceptable for watchmaking applications occurs only when the leaf springs cross at about 87.3 % of their length, but the stroke is only 30.88 % of the stroke of the symmetrical cross-spring pivot. For the symmetrical pivot, gravity sensitivity is of the order of 104 ppm. Our solution is to introduce the co-differential concept which we show to be gravity insensitive. We then use the co-differential to build a gravity insensitive flexure pivot with long stroke. The design consists of a main rigid body, two co-differentials and a torsional beam. We show that our pivot is gravity insensitive and achieves 100 % of the stroke of symmetrical pivots.
Hypocalcaemia associated with high dose rates of zinc oxide to lactating dairy cows (1984)

Clinical hypocalcaemia was associated with single doses of three oi more days' supply of zinc oxide to dairy cows for facial eczema control. Experimental hand dosing of a single dose of zinc oxide (40 and 120 mg Zn/kg h wt) to Jersey cows caused a significant drop in serum calcium concentration at 24 h followed by a rise to concentrations higher than controls at subsequent samplings over four days. At the highest zinc dose rate, 78% of serum calcium values were equal to or lower than the lowest control value at 24 h post dosing. Serum magnesium concentrations had a reciprocal relationship to the calcium levels at all samplings. Serum zinc concentrations were most elevated over the 48 h post dosing, returning to normal levels at the fifth day. Following the highest zinc dose milk yields were reduced by approximately 1.5 kg milk/cow/day for 48 h. Similar results were obtained when cows grazed pasture on which large amounts of zinc oxide had been sprayed.
Medico‐Legal Issues in Travel Medicine (2013)

This chapter presents some of the medico-legal issues that arise in the practice of medicine in a travel setting, including the legal framework of medical malpractice, the nuances that arise in malpractice cases in travel settings, duty to rescue, the Good Samaritan law and the liability of trip operators. A review of the steps that operators and physicians can take, prior to travel, to reduce legal and financial liability in malpractice settings is presented. The chapter concludes with a discussion of additional practical considerations regarding medico-legal issues in a travel setting.
Improved constructions of Delaunay based contour surfaces (1999)

No abstract available.
The grand plans [ballistic missile defense] (1997)

The United States plans to use a layered approach to protect its forces and allies against short-range ballistic missiles, which have ranges less than 3500 km. Area defenses such as the land-based Theater High Altitude Area Defense (Thaad) and the sea-based upper-tier defenses will cover broad areas. Patriot PAC-2 and PAC-3 and the sea-based lower-tier defenses will be a backup for targets missed by the upper tier and protect high-value targets such as airfields, ports, headquarters, and population centers. The Airborne Laser will aim to destroy missiles during the boost phase, when their rocket motors are burning and before they can deploy warheads, decoys, or submunitions. A theater battle management system will coordinate the system's many components.
The oscillation linewidth and noise characteristics of a parallel superconducting quantum interference filter (2004)

The basic requirements providing the unique properties of a superconducting quantum interference filter (SQIF) are discussed. The results of a numerical simulation of the oscillation linewidth for a parallel SQIF are reported and compared with those for a conventional parallel array and single Josephson junction.
Transfection of human macrophages by lipoplexes via the combined use of transferrin and pH-sensitive peptides (1999)

The crucial function of macrophages in a variety of biological processes and pathologies render these cells important targets for gene therapeutic interventions. Commonly used synthetic gene delivery vectors have not been successful in transfecting these non-dividing cells. A combination strategy involving cationic liposomes to condense and carry DNA, transferrin to facilitate cellular uptake, and the pH-sensitive peptide GALA to promote endosome destabilization, resulted in significant expression of a luciferase gene. Transfection of macrophages was dependent on the degree of differentiation of the cells. The quaternary complexes of cationic liposomes, DNA, transferrin, and GALA exhibited a net negative charge, which may obviate a limitation of cationic synthetic vectors in vivo. The lack of cytotoxicity and the expected lack of immunogenicity of these complexes may render them useful for gene delivery to macrophages in vivo.
MAGIC Broker 2: An open and extensible platform for the Internet of Things (2010)

One of the challenges of creating applications from confederations of Internet-enabled things is the complexity of having to deal with spontaneously interacting and partially available heterogeneous devices. In this paper we describe the features of the MAGIC Broker 2 (MB2) a platform designed to offer a simple and consistent programming interface for collections of things. We report on the key abstractions offered by the platform and report on its use for developing two IoT applications involving spontaneous device interaction: 1) mobile phones and public displays, and 2) a web-based sensor actuator network portal called Sense Tecnic (STS). We discuss how the MB2 abstractions and implementation have evolved over time to the current design. Finally we present a preliminary performance evaluation and report qualitatively on the developers' experience of using our platform.
The Biochemistry of Degradation of Polyethers (1987)

(1987). The Biochemistry of Degradation of Polyethers. Critical Reviews in Biotechnology: Vol. 6, No. 3, pp. 273-307.
Multikilowatt hydrogen-nickel oxide battery system (1984)

The potential of the H2-NiO battery for terrestrial applications was assessed. A multicell design approach that differs significantly from the aerospace individual pressure vessel was used. A number of experimental 100-Ah cells were built to evaluate the new design concepts and components. The experimental cells provided the input needed for a multicell battery design. It is found that new multicell H2-NiO battery has a number of potential advantages for aerospace applications such as the manned space station. The advantages are discussed, and a design concept is presented for a multikilowatt battery in a lightweight pressure vessel.
Isolation from African Sykes' monkeys (Cercopithecus mitis) of a lentivirus related to human and simian immunodeficiency viruses (1991)

Analysis of serum samples from 100 wild-caught or colony-born Sykes' monkeys (Cercopithecus mitis) in Kenya revealed that 59 animals had antibodies cross-reactive to human immunodeficiency virus type 2 (HIV-2) and to simian immunodeficiency viruses (SIVs). A lentivirus, designated SIVsyk, was isolated from five of six seropositive asymptomatic Sykes' monkeys, but in four cases isolation was possible only after depletion of CD8+ lymphocytes and cocultivation of the CD4(+)-enriched cell population with peripheral blood mononuclear cells from seronegative Sykes' monkeys. SIVsyk resembled other SIVs and HIVs morphologically, had an Mg2(+)-dependent reverse transcriptase enzyme, and replicated in and was cytopathic for CEMx174 and Sup-T1 cells. SIVsyk differred substantially from other SIVs, however, in that it failed to replicate in normal human, mangabey, and macaque peripheral blood mononuclear cells and serum from seropositive Sykes' monkeys immunoprecipitated env antigens from HIV-1 as well as from HIV-2, SIVsmm, and SIVagm. These data demonstrate a high prevalence of natural infection in Sykes' monkeys in Kenya with a lentivirus that appears to be unique with respect to its host range and antigenic cross-reactivity.
Analysis and design of a wideband high efficiency CMOS outphasing amplifier (2010)

This work presents the analysis and design of a novel transformer-based power combining network for an efficient outphasing power amplifier (PA). The proposed power combining network was implemented on PCB together with two 65nm CMOS class-E PA's. Measurements show a peak output power of more than 30dBm over a 29% bandwidth around 700MHz. The peak output power at 700MHz equals 33.9dBm. The 10dB back-off efficiency is larger than 27.3% over the same 29% bandwidth. The 6dB back-off efficiency is larger than 46.4% over this bandwidth. The drain efficiency at 650MHz is larger than 50% over a 10dB power back-off range, which is, to our best knowledge, the highest back-off efficiency reported in a CMOS outphasing PA to date.
Reaktionen mit Phosphinalkylenen, XV. Eine Synthese der „Königinnensubstanz” und der <i>trans</i>‐10‐Hydroxy‐decen‐(2)‐säure‐(1) (royal jelly acid) (1966)

Abstract Aus Pimelinsäure wurde die trans ‐9‐Oxo‐decen‐(2)‐säure‐(1) ( 10 ) und aus Korksäure die trans ‐10‐Hydroxy‐decen‐(2)‐säure‐(1) ( 18 ) synthetisiert.
Environmental monitoring: civilian applications of remote sensing (1996)

This report documents the results of a Laboratory Directed Research and Development (LDRD) program to explore how best to utilize Sandia`s defense-related sensing expertise to meet the Department of Energy`s (DOE) ever-growing needs for environmental monitoring. In particular, we focused on two pressing DOE environmental needs: (1) reducing the uncertainties in global warming predictions, and (2) characterizing atmospheric effluents from a variety of sources. During the course of the study we formulated a concept for using unmanned aerospace vehicles (UAVs) for making key 0798 climate measurements; designed a highly accurate, compact, cloud radiometer to be flown on those UAVs; and established the feasibility of differential absorption Lidar (DIAL) to measure atmospheric effluents from waste sites, manufacturing processes, and potential treaty violations. These concepts have had major impact since first being formulated in this ,study. The DOE has adopted, and DoD`s Strategic Environmental Research Program has funded, much of the UAV work. And the ultraviolet DIAL techniques have already fed into a major DOE non- proliferation program.
A Hybridized Triboelectric–Electromagnetic Water Wave Energy Harvester Based on a Magnetic Sphere (2019)

Blue energy harvested from ocean waves is an important and promising renewable energy source for sustainable development of our society. Triboelectric nanogenerators (TENGs) and electromagnetic energy harvesters (EMGs) both are considered promising approaches for harvesting blue energy. In this work, a hybridized triboelectric-electromagnetic water wave energy harvester (WWEH) based on a magnetic sphere is presented. A freely rolling magnetic sphere senses the water motion to drive the friction object sliding on a solid surface for TENG back and forth. At the same time, two coils transform the motion of the magnetic sphere into electricity according to the electromagnetic induction effect. For harvesting the blue energy from any direction, the electrodes of the TENG are specified as the Tai Chi shape, the effective of which is analyzed and demonstrated. Based on a series of experimental comparisons, the two friction layers and the two coils are specified to be connected in parallel and in series, respectively. A paper-based supercapacitor of ∼1 mF is fabricated to store the generated energy. The WWEH is placed on a buoy to test in Lake Lanier. During 162 s, the supercapacitor can be charged to 1.84 V, the electric energy storage in it is about 1.64 mJ. This work demonstrates that the WWEH can be successfully used for driving distributed, self-powered sensors for environmental monitoring.
A broadband heterostructure barrier varactor tripler source (2010)

We present the first demonstration of a broadband Heterostructure Barrier Varactor tripler, designed to cover a major part of the WR-8 waveguide band. The source comprises a waveguide housing, a six-barrier InP-HBV diode flip-chip mounted on an AlN microstrip filter circuit. The conversion loss 3-dB bandwidth was measured to 17% at a center frequency of 112 GHz. The maximum output power was more than 15 mW for an input power of 300 mW. There are no mechanical tuners or DC-bias, which simplifies assembly and allows for ultra-compact design.
Repairable Woven Carbon Fiber Composites with Full Recyclability Enabled by Malleable Polyimine Networks (2016)

Carbon-fiber reinforced composites are prepared using catalyst-free malleable polyimine networks as binders. An energy neutral closed-loop recycling process has been developed, enabling recovery of 100% of the imine components and carbon fibers in their original form. Polyimine films made using >21% recycled content exhibit no loss of mechanical performance, therefore indicating all of the thermoset composite material can be recycled and reused for the same purpose.
Excess loop delay in continuous-time delta-sigma modulators (1999)

Continuous-time (CT) delta-sigma modulators (/spl Delta//spl Sigma/M's) suffer from a problem not seen in discrete-time (DT) designs, that of excess loop delay: nonzero delay between the quantizer clock edge and the time when a change in output bit is seen at the feedback point in the modulator. This paper analytically shows how such delay affects the equivalence between the CT modulator loop filter and its DT counterpart. The effect of this delay on modulator dynamic range is studied through simulation for the standard double-integration (low pass) CT modulator and its equivalent fourth-order f/sub s//4 band pass circuit. For the first time, the results are extended to higher order low-pass and bandpass designs, as well as multibit designs. Methods for alleviating the performance loss caused by excess loop delay are also discussed.
The Throwing Power of Nickel and Other Plating Solutions (1960)

A method is described for measuring throwing power, using a Hull cell. Throwing power is expressed in terms of thickness of deposit, measured at various points across the cathode, and of primary cu...
A reproducible and quantifiable model of choroidal neovascularization induced by VEGF A165 after subretinal adenoviral gene transfer in the rabbit. (2008)

This is the first model of VEGF-induced CNV in the rabbit in which the pathological events following overexpression of VEGF by RPE cells have been described in detail. Many of the features of our experimental CNV resemble those observed clinically in patients having wet age-related macular degeneration.
Effect of Spinel Content on the Reaction of Porous Periclase-Spinel Ceramics and Cement Clinker (2016)

Corrosion of five porous ceramics with near apparent porosities (26%~29%) and different spinel contents by cement clinker was conducted, and the effect of the spinel content on the reaction between porous periclase-spinel ceramics and cement clinker was investigated by SEM, EDS, and FactSage ® thermo-chemical software, etc. It can be found that : (1) The dissolution rate of periclase into cement clinker is slow whereas that of spinel into cement clinker is fast; (2) The more the spinel content in the porous ceramics, the higher the dissolution rate of porous ceramics into cement clinker, then the higher corrosion index; the dissolution of spinel into cement clinker changes the composition of the penetrated slag and made the viscosity increases; (3) For the specimens with similar pore size and low viscosity of penetrated liquid phase, the more the liquid content, the higher the penetration degree of liquid to specimens; the further penetration will be stopped with an increase of liquid viscosity, then the contact area between refractory and cement clinker decreases, in the result, the corrosion index decreases. When spinel contents is 0~10mol%, porous periclase-spinel ceramics possess higher penetration resistance and corrosion resistance.
Processing, Structure and Properties of Block Copolymers (1985)

Block copolymers represent an important class of multi-phase material, which have received very widespread attention, particularly since their successful commercial development in the mid-1960s. Much of the interest in these polymers has arisen because of their rather remarkable micro phase morphology and, hence, they have been the subject of extensive microstructural examination. In many respects, the quest for a comprehensive interpretation of their structure, both theoretically and experimentally, has not been generally matched by a corresponding enthusiasm for developing structure/property relationships in the context of their commercial application. Indeed, it has been left largely to the industrial companies involved in the development and utilization of these materials to fulfil this latter role. While it is generally disappointing that a much greater synergism does not exist between science and technology, it is especially sad in the case of block copolymers. Thus these materials offer an almost unique opportunity for the application of fundamental structural and property data to the interpretation of the properties of generally processed artefacts. Accordingly, in this book, the editor has drawn together an eminent group of research workers, with the specific intention of highlighting some of those aspects of the science and technology of block copolymers that are potentially important if further advances are to be made either in material formulation or utilization. For example, special consideration is given to the relationship between the flow properties of block copo lymers and their microstructure.
Neurofilament and chromogranin expression in normal and neoplastic neuroendocrine cells of the human gastrointestinal tract and pancreas (1990)

To differentiate neuroendocrine (NE) neoplasms arising at different levels of the gut and pancreas, the authors studied the expression of neurofilament (NF) proteins and chromogranin (CR) in normal and neoplastic NE cells of the human gastrointestinal tract (GIT) (14 ileal/jejunal carcinoids, six appendiceal carcinoids, 11 rectal carcinoids) and pancreas (23 islet cell tumors). Among pancreatic islet cell tumors, those with middle molecular weight (NF-M)-positive cells were more abundant than those with high molecular weight (NF-H)-positive cells; nearly all of these tumors expressed CR. Although NF-M was abundantly expressed in greater than 50% of tumor cells in a subset of these tumors, only one of these tumors exhibited diffuse immunoreactivity with NF-H. Among rectal carcinoid tumors, NF-M and NF-H-positive cells were present in approximately the same number of tumors, yet only diffuse immunoreactivity to NF-H could be detected. Chromogranin immunoreactivity in greater than 50% of tumor cells was present in 74% of islet cell tumors, 93% of ileojejunal carcinoids, and 83% of appendiceal carcinoids, but only in a minority of rectal carcinoids (36%). Although ileojejunal carcinoid tumors rarely expressed NF-M and did not express NF-H, diffuse immunoreactivity with CR was present in nearly all of these tumors. None of the appendiceal carcinoid tumors expressed NF-M or NF-H, yet all of these tumors demonstrated immunoreactivity with CR. Neurofilament immunoreactivity was not detected in normal GIT and pancreatic NE cells, whereas CR immunoreactivity was always present. These results suggest that for NE neoplasms of the GIT and pancreas the differential expression of NF subtypes appears to be related to tumor site; and CR is a marker of most GIT and pancreatic NE neoplasms although NF may discriminate subtypes of GIT and pancreatic NE tumors. Neurofilament subtyping may be useful in the evaluation of the origin of NE tumors presenting as metastatic lesions.