gebhart/patrepeval huggingface dataset:
UAV Relay-Assisted Emergency Communications in IoT Networks: Resource Allocation and Trajectory Optimization (2021)

Unmanned aerial vehicle (UAV) communication has emerged as a prominent technology for emergency communications (e.g., natural disaster) in the Internet of Things (IoT) networks to enhance the ability of disaster prediction, damage assessment, and rescue operations promptly. A UAV can be deployed as a flying base station (BS) to collect data from time-constrained IoT devices and then transfer it to a ground gateway (GW). In general, the latency constraint at IoT devices and UAV&#x2019;s limited storage capacity highly hinder practical applications of UAV-assisted IoT networks. In this paper, full-duplex (FD) radio is adopted at the UAV to overcome these challenges. In addition, half-duplex (HD) scheme for UAV-based relaying is also considered to provide a comparative study between two modes (viz., FD and HD). Herein, a device is considered to be successfully served if its data is collected by the UAV and conveyed to GW timely during flight time. In this context, we aim to maximize the number of served IoT devices by jointly optimizing bandwidth, power allocation, and the UAV trajectory while satisfying each device&#x2019;s requirement and the UAV&#x2019;s limited storage capacity. The formulated optimization problem is troublesome to solve due to its non-convexity and combinatorial nature. Towards appealing applications, we first relax binary variables into continuous ones and transform the original problem into a more computationally tractable form. By leveraging inner approximation framework, we derive newly approximated functions for non-convex parts and then develop a simple yet efficient iterative algorithm for its solutions. Next, we attempt to maximize the total throughput subject to the number of served IoT devices. Finally, numerical results show that the proposed algorithms significantly outperform benchmark approaches in terms of the number of served IoT devices and system throughput.
Übergangsmetall- und Lanthanoid-Komplexe von 1,4,7,10-Tetraallylund 1,4,7,10-Tetra-3-butenyl-1,4,7,10-tetraazacyclododecan (2009)

1,4,7,10-Tetraazacyclododecane (1) reacts with allylbromide and 3-butenylbromide giving 1,4,7,10-tetraallyl-1,4,7,10-tetraazacyclododecane (TAC) (2a) and 1,4,7,10-tetra-3-butenyl-1,4,7,10- tetraazacyclododecane (TBC) (2b), respectively. Compounds 2a and 2b react with FeCl 2 , CoCl 2 , RhCl 3 , NiCl 2 , CuBr 2 , and TmCl 3 forming the complexes [FeCl(TAC)]Cl (3a), [FeCl(TBC)]Cl (3b), [CoCl(TAC)]Cl (4), [RhCl(TAC)]Cl 2 (5), [NiCl(TAC)]Cl (6a), [NiCl(TBC)]Cl (6b), [CuBr(TAC)]Br (7), [TmCl(TAC)]Cl 2 (8a), and [TmCl(TBC)]Cl 2 (8b). The reaction of 6a with an excess of CuCl affords a coordination polymer in which [NiCl(TAC)] + cations are connected by [Cu 6 Cl 8 ] 2 − anions (9). The 1 H and 13 C NMR spectra of 2a, 2b, 5, and 6a, as well as the single crystal X-ray structures of 2a ・ 3HCl, 6a, 6b, 7, and 9 are reported and discussed.
Total Synthesis of 10-Norparvulenone and of O-Methylasparvenone Using a Xanthate-Mediated Free Radical Addition−Cyclization Sequence (2003)

[reaction: see text] A short synthesis of (+/-)-10-norparvulenone and (+/-)-O-methylasparvenone was developed starting from commercially available m-methoxyphenol, hinging on a xanthate-mediated addition-cyclization sequence for the construction of the alpha-tetralone subunit.
[Systematic strength training in the postmenopause: accompanying densitometric control with DXA]. (1993)

Of all the forms of osteoporosis, the postmenopausal type is the most important in social medicine due to the potentially high fracture risk in aging. The positive effects of physical activity on bone density have been emphasized in several studies. In this study on 31 female volunteers (minimum age 50 years), who had been postmenopausal for at least 2 years, 16 underwent systematic strength building (training group). They were compared with a control group consisting of 15 female volunteers. The parameters of success were physical strength and bone mineral density (BMD) before and after training. BMD was measured by dual-energy X-ray absorptiometry. The subjects in the control group showed significant decrease in bone density after 6 months: between 6.7 and 22.3% of the values measured at the beginning. The loss was more evident in the proximal femur than in the lumbar spine. In contrast, the subjects in the training group only showed a marginal decrease in bone density in the proximal femur: 0.8 to 3.8% of the earlier values. In the lumbar spine there was even a slight increase (+0.3%) in bone density.
G212 Two-Stage Rotary Compressor for CO_2 Refrigerant Injection Cycle (2007)

From the object to prevent global warming, natural refrigerant, especially CO_2 is considered as an alternative refrigerant to HFC. Moreover, heat pump technology advanced as energy conservation is spreading promoted. We have developed a two-stage rotary compressor for two-stage compression cycle with injecting refrigerant of intermediate pressure. We have proved its high efficiency and the effects of the injection on the condition of high pressure ratio equivalent of ambient low temperature. We have analyzed it in detail and clarified the merit and weak point in comparision with a single rotary compressor.
Airflow Optimization in Retail Cabinets and the Use of CFD Modelling to Design Cabinets (2015)

It is evident that improvements in performance of refrigerated units (cabinets, display cases, etc.) is becoming a necessity. Some of these improvements are focused on the hardware involving the compressor, evaporator, lighting design and heat transfer of such units. However, additional gains in the performance of refrigerated cabinets can be achieved by altering the airflow pattern and characteristics inside (or outside) these cabinets. This chapter summarizes ongoing research on this, to demonstrate the application of a hybrid approach which combines computational fluid dynamics (CFD) and experimental methods to understand and map the airflow pattern and characteristics. The main focus is on open vertical refrigerated display cases (OVRDCs). The chapter discusses the infiltration rate in OVRDCs by using hybrid CFD and experimental tools. CFD provides detailed local information about the fluid flow, giving insight into ways to alter a design for better performance.
Differential branching fraction and angular analysis of the decay $ B_s^0 $ → ϕμ + μ − (2013)

A bstract The determination of the differential branching fraction and the first angular analysis of the decay $ B_s^0 $ → ϕμ + μ − are presented using data, corresponding to an integrated luminosity of 1.0 fb −1 , collected by the LHCb experiment at $ \sqrt{s}=7 $ TeV. The differential branching fraction is determined in bins of q 2 , the invariant dimuon mass squared. Integration over the full q 2 range yields a total branching fraction of $ \mathcal{B}\left( {B_s^0\to \phi {\mu^{+}}{\mu^{-}}} \right)=\left( {7.07_{-0.59}^{+0.64}\pm 0.71\pm 0.71} \right) $ × 10 −7 , where the first uncertainty is statistical, the second systematic, and the third originates from the branching fraction of the normalisation channel. An angular analysis is performed to determine the angular observables F L , S 3 , A 6 , and A 9 . The observables are consistent with Standard Model expectations.
Characteristics of erbium-doped superfluorescent fiber sources for interferometric sensor applications (1994)

The characteristics of 1.55 /spl mu/m Er-doped superfluorescent fiber sources (SFS's), intended for fiber-optic gyroscope (FOG) applications, are explored theoretically and experimentally. With proper selection of the source configuration, fiber length, pump wavelength, pump power, and fiber composition, we show that it is possible to meet the stringent requirements of the FOG, including a high output power, broad emission bandwidth, and excellent spectral thermal stability. Variations of the mean wavelength, spectral width, and output power of the SFS with fiber length, pump power, pump wavelength, and temperature are modeled for representative sources pumped near 980 nm or 1.48 /spl mu/m, and are shown to be in good agreement with experimental results. The effects of a multimoded pump, erbium ion pair, and optical feedback are also assessed. This study indicates that the Er-doped SFS is an excellent candidate for the FOG and for other applications requiring spatial coherence and low temporal coherence.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Moving slice septa and pseudo three-dimensional reconstruction for multi-ring PET (1992)

Describes moving slice septa for reducing scattered and random events in multi-ring positron emission tomographs (PET) and a new simple method of three-dimensional (3D) image reconstruction which is useful when the maximum axial acceptance angle of coincidence is not too large. The moving septa considered are linear and sinusoidal piston motions of parallel septa, axis wobbling of parallel septa and rotation of spiral septa. The proposed reconstruction algorithm is basically a filtered (1D) backprojection (3D) method. The low frequency image is reconstructed using direct (and cross) plane coincidence as in the conventional way, and the high frequency image is reconstructed using all projection data through high-pass filtering. The two images are superimposed in such a way that the final frequency response is normal. The axial cross talk is effectively eliminated by Gaussian high-pass filtering with negligible increase in statistical noise, and it is possible to include most of the oblique coincidence events in the reconstruction in a single pass. Simulation studies with a maximum axial acceptance angle of +or-7.6 degrees (+or-10 ring difference) show satisfactory results.
On the Influence of User Behaviour and Admission Control on System Performance in HS-DSCH (2006)

In this paper we investigate the need for admission control for the high-speed downlink shared channel (HS-DSCH) through the evaluation of two admission control mechanisms. One mechanism uses the number of active users in a cell as a metric and the other one uses the mean downlink throughput of a user. We also introduce a model for user behaviour in which the goodput of a completed file download decides if further downloads are made. In order to measure user-experienced quality we use a utility function for transforming per-flow goodput into a user satisfaction index. System performance, measured by total user satisfaction and total goodput, is evaluated for a range of session arrival rates and admission control limits. This evaluation is done using the ns-2 simulator, together with extensions of our own. If the objective is to maximise goodput, our results show that no admission control is needed. Maximising user satisfaction benefits from an admission control. We also note that the impact of user behaviour is not insignificant
Light uncages a copper complex to induce nonapoptotic cell death (2013)

Cu3G is a Cu(II) complex of a photoactive tetradentate ligand that is cleaved upon UV irradiation to release Cu. Here we show that the cytotoxicity of Cu3G increases in response to brief UV stimulation to result in extensive cytoplasmic vacuolization that is indicative of nonapoptotic cell death.
Lightweight stiffness-dominated acoustic metamaterial barrier for low-frequency sound (2023)

In this study, we experimentally demonstrate a class of lightweight acoustic metamaterial barriers that block low-frequency sound. The acoustic metamaterial barrier is composed of a thin rubber membrane coated over a stiff honeycomb plate. Our findings, combined with high-fidelity finite element simulations, demonstrate that the sound insulation performance of the acoustic metamaterial surpasses the mass law in three distinct frequency ranges: (a) the stiffness law dominates insulation up to 140 Hz, (b) degeneracy and destructive superposition of high-order natural modes dominate within the frequency range of 300–500 Hz, and (c) destructive interference between high-order resonance and membrane resonance dominates in the frequency range of 800–1200 Hz. Notably, our study highlights the potential of high-order shear vibration of the periodic structure for the resonant bending waves of the honeycomb cell that coincide with the wavelengths of longitudinal sound waves in air, thereby offering new design guidelines for lightweight acoustic metamaterial barriers. This study reports for the first time the coincidence of high-order and membrane resonance modes within the honeycomb cell by employing an accurate finite element model and experimental validation.
Alignment between a single quantum dot and a photonic crystal nanocavity by a microscopic photoluminescence imaging (2012)

An accurate and reliable method to realize position and wavelength alignment between a single quantum dot and a two-dimensional slab photonic crystal nanocavity is developed using a photoluminescence imaging technique.
Performance Evaluation of Activated Carbon Nanofiber as Carbon Supports to Improve the Cyclability of Li-Air Batteries (2015)

This study addresses the effects of the pore structures of carbon materials used as cathodes for non-aqueous lithium-air batteries on cycle life. Carbon Nanofibers (CNFs) were synthesized by electrospinning polyacrylonitrile (PAN) and carbonization. The synthesized CNF was then converted to activated carbon nanofibers (ACNFs) under flowing CO2. The specific surface areas CNFs were increased on activation. ACNFs were arranged randomly to form a web-like structure providing both oxygen pathways and a means of discharging products. To examine the electrochemical properties of ACNF, charge-discharge tests were conducted using a Swagelok-type cell at a constant current density of 0.2 mA/cm2; impedance tests were also conducted. ACNF sheet electrodes had cycle lives of up to 50 cycles, which was attributed to high surface area and porosity, although overpotentials for both charge and discharge were high. This cycling performance showed that the pore structure of sheet ACNF is more suitable for the transport of oxygen and for the storage of discharge products than carbon powders.
Automating Analytical Separations in Radiochemistry (1998)

Substance abusers account for the largest number of hepatitis C infected cases in developed countries. We describe a care model for treating current or former substance abusers with antiviral therapy for hepatitis C virus (HCV) infection. The care model involved hepatitis nurses, a psychologist, infectious disease specialist and primary care physicians. Clients met selection criteria including regular attendance at clinic appointments and social stability. Use of alcohol and illicit substances was monitored with urine toxicology screens. The association between substance use, rates of completion of therapy and rates of response were assessed using multivariable regression analyses. A total of 109 clients (75 with genotype 1/4 and 34 with genotype 2/3) received at least one injection with pegylated interferon between November 2002 and January 2006. Treatment completion rates of 61 and 74% were achieved for genotypes 1/4 and 2/3, respectively. Treatment response rates in an intention to treat analysis were 51% for genotypes 1/4 and 68% for genotypes 2/3. A positive urine toxicology screen indicating use of illicit substances 6 months prior to initiating therapy was significantly associated with lower rates of treatment completion but not lower rates of sustained virological response. A positive urine screen indicating use of alcohol prior to therapy was significantly associated with lower rates of completion and lower rates of response. Rates of completion and response are comparable to non-substance abusing populations. Antiviral therapy for HCV infection can be successful within the context of ongoing care for substance abuse for carefully selected patients.
Bacterial expression of a kemptide fusion protein facilitates 32P labeling of a humanized, anti-carcinoembryonic antigen (hMN-14) antibody fragment. (1995)

Despite the potential advantages of 32P over other isotopes for radioimmunotherapy, its development as a therapeutic has been hindered by the difficulty of the labeling chemistry. Recently, a heptapeptide [Kemptide (KPT)] has been chemically conjugated to antibodies, and the conjugates have successfully been labeled with 32P enzymatically by using bovine protein kinase. By using genetic engineering, we have produced a chimera (Fab.KPT) consisting of the Fab' moiety of the complementarity-determining region-grafted anti-carcinoembryonic antigen-monoclonal antibody, MN14, and a heptapeptide derivative of KPT (Trp-Arg-Arg-Ala-Ser-Leu-Gly). The recombinant protein was expressed in Escherichia coli as a soluble secretory product. The presence of the KPT derivative downstream of the COOH terminus of the hinge region did not impair the binding affinity of the antibody fragment. The Fab.KPT was enzymatically phosphorylated with 32P by bovine protein kinase, without significant effect on the resultant immunoreactivity; 100% of the 32P-labeled Fab.KPT was complexed with liquid carcinoembryonic antigen. The 32P-labeled humanized MN-14 Fab.KPT is expected to have longer blood circulation half-life, allowing for an improved therapeutic efficacy in radioimmunotherapy.
Structure of 1,2,6‐thiadiazine 1,1‐dioxides (1990)

Abstract Ab initio theoretical calculations were carried out on the three tautomers, NH, OH and CH, of 1,2,6‐thiadiazine 1,1‐dioxides. Different basis sets were employed in order to obtain an adequate description of these cyclic sulphamide derivatives. A coherent picture is obtained which includes relative stability of tautomers (NH &gt; CH &gt; OH), non‐planarity of NH and CH tautomers and electronic distribution (Boys' localized orbitals).
ChemInform Abstract: A Copper‐Free Palladium‐Catalyzed Cross‐Coupling Reaction of Vinyl Tosylates with Terminal Acetylenes. (2002)

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.
(Invited) Material Engineering for 7nm FinFETs (2014)

Design rules and several candidate channel materials are explored for the 7nm technology node. FinFET transistor architecture is chosen, and the analysis is performed using 3D modeling tools, including ballistic transport, Schrodinger-driven quantization, and band-to-band tunneling leakage. The comparative analysis of Si, SiGe, Ge, GaAs, InGaAs, and InAs channel materials points to InGaAs with more than 80% Ga content as the best candidate for low power applications at 7nm design rules.
Identifying the Infarct-Related Artery in Patients With Non–ST-Segment–Elevation Myocardial Infarction (2019)

Identification of the IRA by coronary angiography can be challenging in patients with non-ST-segment-elevation MI. In nearly half, DE-CMR may lead to a new IRA diagnosis or elucidate a nonischemic pathogenesis. Revascularization solely of coronary arteries that are believed to be nonculprit arteries by DE-CMR is not uncommon.
Optical Multiplexing of Two 21.5 Gb/s DPSK Signals into a Single 43 Gb/s DQPSK Channel with Simultaneous 7-Fold Multicasting in a Single PPLN Waveguide (2009)

We demonstrate optical multiplexing of two 21.5 Gb/s DPSK signals into a single 43 Gb/s RZ-DQPSK channel with simultaneous 7-fold multicasting of the multiplexed 43 Gb/s RZ-DQPSK signal in a single periodically-poled lithium-niobate waveguide. We also demonstrate direct 7-fold multicasting of a single 43 Gb/s RZ-DQPSK signal and give a comparison of the two schemes. A bit error rate of 10−9 with power penalties &lt; 5 dB was obtained for all multicasted RZ-DQPSK signals with 100 GHz channel spacing.
Media Gateway Control Protocol (MGCP) Version 1.0 (2003)

This document describes an application programming interface and a corresponding protocol (MGCP) which is used between elements of a decomposed multimedia gateway. The decomposed multimedia gateway consists of a Call Agent, which contains the call control intelligence, and a media gateway which contains the media functions, e.g., conversion from TDM voice to Voice over IP.
On the Multiphysics Modeling of Surface Aging Under Cathodic Protection (2018)

In order to account and compensate for the dissipative processes contributing to the aging of cathodic surfaces protected by impressed current cathodic protection (ICCP) systems, it is necessary to develop the proper modeling and numerical infrastructure that can predict aging associated with quantities affecting the controller of these systems. In the present work, we describe various approaches for developing cathodic surface aging models (CSAMs) based on both data-driven and first principles-based methodologies. A computational ICCP framework is implemented in a manner that enables the simulation of the effects of cathodic aging in a manner that allows the utilization of various CSAMs that affect the relevant potentiodynamic polarization curves of the cathodic materials. An application of this framework demonstrates the capabilities of this system. We introduce a data-driven CSAM based on a loft-surface approximation, and in response to the limitations of this approach, we also formulate a first principles-based multiphysics and thermodynamic theory for aging. Furthermore, we discuss the design of a systematic experimental task for validating and calibrating this theory in the near future.
Oxygen Transfer in Membrane‐Ceramic Composite Materials For Immobilized‐Cell Monolithic Reactors (1986)

A novel bioreactor concept is described for facilitated gas-liquid mass transfer, specifically oxygen supply, at low shear rates and low power input. The cross flow monolithic reactor is a single piece of ceramic consisting of continuous flow passages manifolded in a cross flow arrangement. Liquid medium circulates through the passages in one direction and gas circulates through the passages in an orthogonal direction; thus, the two streams are contacted across a large area of a porous ceramic, gas permeable membrane composite.A test cell was designed and used to measure the rate of oxygen transfer across such a composite. High oxygen transfer rates (6.62g O(2) x l(-1) x hr(-1)), with minimal power requirements (estimated below 5 x 10(-3) watts/l reactor volume), were found. This corresponds to a transfer efficiency of greater than 1000 kg O(2)/kW . hr, orders of magnitude greater than the values reported by Serieys, et al.(14) due to the low flow rates and low pressure drops required in a cross flow monolith. This contacting configuration could be employed with highly aerobic, immobilized-cell fermentations to enhance oxygen transfer rates with a parallel decrease of process power requirements.
Composite Binary Decomposition Networks (2019)

Binary neural networks have great resource and computing efficiency, while suffer from long training procedure and non-negligible accuracy drops, when comparing to the fullprecision counterparts. In this paper, we propose the composite binary decomposition networks (CBDNet), which first compose real-valued tensor of each layer with a limited number of binary tensors, and then decompose some conditioned binary tensors into two low-rank binary tensors, so that the number of parameters and operations are greatly reduced comparing to the original ones. Experiments demonstrate the effectiveness of the proposed method, as CBDNet can approximate image classification network ResNet-18 using 5.25 bits, VGG-16 using 5.47 bits, DenseNet-121 using 5.72 bits, object detection networks SSD300 using 4.38 bits, and semantic segmentation networks SegNet using 5.18 bits, all with minor accuracy drops.1