gebhart/patrepeval huggingface dataset:
<title>Cascaded neural networks for sequenced propagation estimation, multiuser detection, and adaptive radio resource control of third-generation wireless networks for multimedia services</title> (1999)

A hybrid neural network approach is presented to estimate radio propagation characteristics and multiuser interference and to evaluate their combined impact on throughput, latency and information loss in third-generation (3G) wireless networks. The latter three performance parameters influence the quality of service (QoS) for multimedia services under consideration for 3G networks. These networks, based on a hierarchical architecture of overlaying macrocells on top of micro- and picocells, are planned to operate in mobile urban and indoor environments with service demands emanating from circuit-switched, packet-switched and satellite-based traffic sources. Candidate radio interfaces for these networks employ a form of wideband CDMA in 5-MHz and wider-bandwidth channels, with possible asynchronous operation of the mobile subscribers. The proposed neural network (NN) architecture allocates network resources to optimize QoS metrics. Parameters of the radio propagation channel are estimated, followed by control of an adaptive antenna array at the base station to minimize interference, and then joint multiuser detection is performed at the base station receiver. These adaptive processing stages are implemented as a sequence of NN techniques that provide their estimates as inputs to a final- stage Kohonen self-organizing feature map (SOFM). The SOFM optimizes the allocation of available network resources to satisfy QoS requirements for variable-rate voice, data and video services. As the first stage of the sequence, a modified feed-forward multilayer perceptron NN is trained on the pilot signals of the mobile subscribers to estimate the parameters of shadowing, multipath fading and delays on the uplinks. A recurrent NN (RNN) forms the second stage to control base stations' adaptive antenna arrays to minimize intra-cell interference. The third stage is based on a Hopfield NN (HNN), modified to detect multiple users on the uplink radio channels to mitigate multiaccess interference, control carrier-sense multiple-access (CSMA) protocols, and refine call handoff procedures. In the final stage, the Kohonen SOFM, operating in a hybrid continuous and discrete space, adaptively allocates the resources of antenna-based cell sectorization, activity monitoring, variable-rate coding, power control, handoff and caller admission to meet user demands for various multimedia services at minimum QoS levels. The performance of the NN cascade is evaluated through simulation of a candidate 3G wireless network using W-CDMA parameters in a small-cell environment. The simulated network consists of a representative number of cells. Mobile users with typical movement patterns are assumed. QoS requirements for different classes of multimedia services are considered. The proposed method is shown to provide relatively low probability of new call blocking and handoff dropping, while maintaining efficient use of the network's radio resources.
Towards the proteome ofMycobacterium tuberculosis (2000)

Human tuberculosis is caused by the intracellular pathogen Mycobacterium tuberculosis. Sequencing of the genome of M. tuberculosis strain H37Rv has predicted 3924 open reading frames, and enabled identification of proteins from this bacterium by peptide mass fingerprinting. Extracellular proteins from the culture medium and proteins in cellular extracts were examined by two-dimensional gel electrophoresis using immobilized pH gradient technology. By mass spectrometry and immunodetection, 49 culture filtrate proteins and 118 lysate proteins were identified, 83 of which were novel. To date, 288 proteins have been identified in M. tuberculosis proteome studies, and a list is presented which includes all identified proteins (available at http://www.ssi.dk/publichealth/tbimmun). The information obtained from the M. tuberculosis proteome so far is discussed in relation to the information obtained from the complete genome sequence.
Integrated Flight Control and Flow Control Using Synthetic Jet Arrays (2006)

In this paper, a novel integrated flight control and flow control system using synthetic jet arrays is presented. In the proposed system, a novel active flow control actuator, synthetic- jets-instrumented-wingtips were designed to enhance or replace traditional roll control of a specified airplane. Wind tunnel experiments were conducted to obtain the dynamic model of the synthetic-jets-instrumented-wing-tips. A closed-loop active flow control system was developed to reattach the flow at high angle of attacks. A high fidelity dynamic model for the airplane with the designed synthetic-jets-instrumented-wing-tips was developed based on wind tunnel experiments. A nonlinear integrated flight control and flow control system was developed and tested in simulations. Simulation results showed that the synthetic-jets- instrumented-wing-tips, in conjunction with the elevator and rudder, can effectively control the Cessna's attitude.
Problem free nuclear power and global change (1997)

Nuclear fission power reactors represent a solution-in-principle to all aspects of global change possibly induced by inputting of either particulate or carbon or sulfur oxides into the Earth`s atmosphere. Of proven technological feasibility, they presently produce high- grade heat for electricity generation, space heating and industrial process-driving around the world, without emitting greenhouse gases or atmospheric particulates. However, a substantial number of major issues currently stand between nuclear power implemented with light- water reactors and widespread substitution for large stationary fossil fuel-fired systems, including long-term fuel supply, adverse public perceptions regarding both long-term and acute operational safety, plant decommissioning, fuel reprocessing, radwaste disposal, fissile materials diversion to military purposes and - perhaps more seriously - cost. We describe a GW-scale, high-temperature nuclear reactor heat source that can operate with no human intervention for a few decades and that may be widely acceptable, since its safety features are simple, inexpensive and easily understood. We provide first-level details of a reactor system designed to satisfy these requirements. Such a back-solving approach to realizing large-scale nuclear fission power systems potentially leads to an energy source capable of meeting all large-scale stationary demands for high- temperature heat. If widely employed to support such demands, it could, for example, directly reduce present-day world-wide CO{sub 2} emissions by two-fold; by using it to produce non-carbonaceous fuels for small mobile demands, a second two-fold reduction could be attained. Even the first such reduction would permit continued slow power-demand growth in the First World and rapid development of the Third World, both without any governmental suppression of fossil fuel usage.
Simple photographic method for x-ray diffraction characterisation of superlattices (1988)

The authors have developed a very simple and rapid x-ray technique for the characterisation of superlattices. The method relies on continuous photographic recording of diffracted x-rays while scanning the superlattice sample through a small range of angles. They have worked up to the seventh-order diffraction spot with relatively short (1 h) exposures. A series of exposures of increasing duration permits the estimate of relative diffraction spot intensities and ultimately provides a measure of the range of interface roughness and/or intermixing between the layers forming the superlattice. The technique is demonstrated with an evaporated amorphous Ge-SiO superlattice, for which a roughness length of approximately 0.6 nm was found.
Porous Tantalum Anodes for Liquid and Solid Electrolytic Capacitors by Reaction in Situ (1963)

A new porous tantalum capacitor anode for liquid and solid electrolytic capacitors, prepared directly by the reaction in situ of and C is described. Porous in situ anodes with total interstitial contents (C, O, and N) of less than 0.02%, metallic impurity contents less than the limit of chemical analytical detection, densities of approximately 4–12 g/cc, and specific capacitances of 1600–3200 μcoul/g were evaluated. Life tests of 1000 hr showed only slight changes in electrical characteristics for liquid electrolytic capacitors tested at 125v and 85°C and solid electrolytic capacitors tested at 34v and 125°C.
Feature discovery under contextual supervision using mutual information (2003)

The author considers a neural network in which the inputs may be divided into two groups, termed primary inputs and contextual inputs. The goal of the network is to discover those linear functions of the primary inputs that are maximally related to the information contained in the contextual units. The strength of the relationship between the two sets of inputs is measured by using their average mutual information. In the situation where the inputs follow a multivariate, elliptically symmetric probability model, this is equivalent to performing a canonical correlation analysis. A stochastic algorithm is introduced to achieve this analysis. Some theoretical details including a convergence results are presented. Some possible nonlinear extensions are discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Efficient torque ripple minimization for variable reluctance motors (2002)

Addresses the design of current waveforms that minimize torque ripples in variable reluctance (VR) motors at low excitation levels. The general problem of torque ripple reduction has been investigated before by several researchers, but the approach presented here exploits magnetic linearity to derive an efficient excitation that is much easier to calculate. A nonlinear optimal design problem is developed and then converted to a linear representation by a simple transformation. The transformed linear optimization problem is straightforwardly solved by standard numerical methods, and yields the optimal current waveform in a transformed variable. Finally, the optimal current waveform is found by applying an inverse transformation. The analytical result presented in this paper is supplemented by a design example.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Prediction of Dispersion Relation for Elastic Stress Waves in Prestressed Tendons Using 1-D Member Theories (2003)

The analytical determination of dispersion relations of stress waves propagating within an axisymmetric member has been well established during the past four or five decades. For dynamic analysis associated with fundamental modes of vibration, various one-dimensional (1-D) member theories have been proven to be able to reproduce reasonable approximations for the dispersion relationship. These 1-D member theories provide more efficient and simpler solu- tions than those obtained by the three-dimensional (3-D) elasticity theory since the need for evaluating special functions such as Bessel functions is eliminated. To assess the loss in prestressing force, elastic waves were applied by various researchers to slender members of axi- symmetric cross sections, such as seven-wire-strand tendons and underground pipelines. Thus the feasibility of using the 1-D member theories to predict the associated dispersion phenomenon should be addressed. In this work, formulations of most applicable 1-D linear theories were summarized and corresponding dispersion approximations were obtained in terms of dimen- sionless parameters. These formulations include the three-mode Mindlin-McNiven theory for axial vibrations, the two-mode Timoshenko beam theory for transverse vibrations, and the nonlinear theory for cable dynamics.
Quasi-order of clocks and their synchronism and quantum bounds for copying timing information (2003)

The statistical state of any (classical or quantum) system with nontrivial time evolution can be interpreted as the pointer of a clock. The quality of such a clock is given by the statistical distinguishability of its states at different times. If a clock is used as a resource for producing another one the latter can at most have the quality of the resource. We show that this principle, formalized by a quasi-order, implies constraints on many physical processes. Similarly, the degree to which two (quantum or classical) clocks are synchronized can be formalized by a quasi-order of synchronism. Copying timing information is restricted by quantum no-cloning and no-broadcasting theorems since classical clocks can only exist in the limit of infinite energy. We show this quantitatively by comparing the Fisher timing information of two output systems to the input's timing information. For classical signal processing in the quantum regime our results imply that a signal looses its localization in time if it is amplified and distributed to many devices.
Fabrication and Characterization of γ‐LiAlO <sub>2</sub> Matrices Using an Aqueous Tape‐Casting Process (2001)

A new aqueous tape‐casting process that is simple and environment friendly has been developed to fabricate the γ‐LiAlO 2 matrix for molten‐carbonate fuel cells (MCFCs). Very‐fast‐drying green sheets having a thickness of 500–600 μm, no defects, and good workability have been obtained using an aqueous tape‐casting process and protein. The microstructure of the γ‐LiAlO 2 matrices (50%–60% porosity and 0.15 μm average pore size) required in a MCFC matrix can be prepared using this method.
Prediction of microbe–disease association from the integration of neighbor and graph with collaborative recommendation model (2017)

Compared with other methods, the prediction results yielded by NGRHMDA demonstrate its effective prediction performance for microbe-disease associations. It is anticipated that NGRHMDA can be used as a useful tool to search the most potential microbial candidates for various diseases, and therefore boosts the medical knowledge and drug development. The codes and dataset of our work can be downloaded from https://github.com/yahuang1991/NGRHMDA .
the effect of ring size on the rate of pyrolysis of cycloalkyl phenyl sulfoxides (1967)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTthe effect of ring size on the rate of pyrolysis of cycloalkyl phenyl sulfoxidesJohn L. Kice and J. Douglas CampbellCite this: J. Org. Chem. 1967, 32, 5, 1631–1633Publication Date (Print):May 1, 1967Publication History Published online1 May 2002Published inissue 1 May 1967https://doi.org/10.1021/jo01280a083RIGHTS & PERMISSIONSArticle Views91Altmetric-Citations19LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (393 KB) Get e-Alertsclose Get e-Alerts
Developing a Model to Assess the Potential Impact of TUM Hydropower Turbines on Small River Ecology (2018)

Small hydropower is a renewable energy technology that is used for electricity generation worldwide, but still has potential for further development. However, during the installation of small hydropower, the ecological impacts of the power plants need to be thoroughly investigated. In addressing the challenges of energy production and minimizing the environmental impacts of small hydropower installation and operation, this study has applied an ecohydraulic model to investigate river hydrodynamics, hydromorphology, habitat, and the population impacts of small hydropower, and presented the Mum River as a case study. Two scenarios were implemented in this research to simulate the hydrodynamic, sedimentation, habitat, and population status in order to assess the potential effects caused by the TUM plant. At the Mum River, two scenarios were proposed: the TUM plant was not considered in scenario S1, but was considered in scenario S2. The model results for scenario S2 indicated that the habitat was suitable for fish species living in the Mum River, with fish population numbers between 4.6 × 103 and 6.6 × 103. The S2 results indicated that the impacts of the TUM plant were negligible when compared with S1. Although the impact of the TUM plant on the Mum River is relatively large when the discharge is high (19 m3/s), calculations based on stable flow shows that the TUM plant could function well on the river ecosystem when the discharge is low or at normal rates. Therefore, this study shows that the TUM plant would be a good option to meet the needs of energy generation whilst having a minimal impact on river habitats and changes in fish species population in similar small rivers and streams.
Efficient context-sensitive pointer analysis for C programs (1995)

This paper proposes an efficient technique for context-sensitive pointer analysis that is applicable to real C programs. For efficiency, we summarize the effects of procedures using partial transfer functions. A partial transfer function (PTF) describes the behavior of a procedure assuming that certain alias relationships hold when it is called. We can reuse a PTF in many calling contexts as long as the aliases among the inputs to the procedure are the same. Our empirical results demonstrate that this technique is successful—a single PTF per procedure is usually sufficient to obtain completely context-sensitive results. Because many C programs use features such as type casts and pointer arithmetic to circumvent the high-level type system, our algorithm is based on a low-level representation of memory locations that safely handles all the features of C. We have implemented our algorithm in the SUIF compiler system and we show that it runs efficiently for a set of C benchmarks.
A phase-based ranging method for fast frequency hopping system (2014)

Alternative Position, Navigation, Time (APNT) service is gradually on the rise to maintain safety, and minimize economic impacts from GNSS interference outages within the airspace system. As a result, anti-interference ranging methods are urgently needed in APNT systems. Fast frequency hopping technology can provide strong resistance to radio interference for APNT systems. However, it is hard to get accurate range estimate from measurements of one hop because the residence time and the baseband width are limited in fast frequency hopping systems. In this paper, we propose a new phase-based ranging method for fast frequency hopping system, which is called Time-Frequency Matrix Ranging (TFMR). By TFMR, we can combine measurements of multi-hops to achieve high accuracy of range estimate. We present DFT-based and FFT-based estimators for different scenarios respectively. Different estimate accuracies are achieved by using matrices in different sizes. We calculate the Cramer Rao lower bounds (CRLB), which can provide a benchmark for selecting matrices with different signal-to-noise ratio.
Monolithic grid amplifiers (2008)

A grid amplifier is a quasi-optical power-combining device which amplifies a microwave beam and spatially combines the outputs of many transistors, making it possible to greatly increase power. This thesis will discuss gain and stability models for Heterojunction-Bipolar-Transistor (HBT) grid amplifiers. A transmission-line equivalent-circuit model for gain analysis will be discussed. Hybrid HBT grid amplifiers, fabricated with high-dielectric substrates, have been demonstrated with gains of 11 dB at 10 GHz and 6 dB at 16 GHz. A stability model for common-mode oscillations will be presented and stabilizing techniques will be discussed. With stabilizing capacitors, a highly stable grid amplifier has been achieved at 10 GHz. Based on the models, a 36-element monolithic HBT grid amplifier is designed, fabricated and tested. The result is a highly stable monolithic grid amplifier with a peak gain of 5 dB and 3-dB bandwidth of 1.8 GHz. This monolithic HBT grid amplifier has a maximum saturated output power of 670 mW at 40 GHz. The far-field approach was employed to measure the gain and power of the grid amplifiers. Theoretical discussions on aperture efficiencies of grids and thermal modelling for a two-layer structure of a grid with a carrier will be discussed.
Proposed Oxidative Metabolic Pathway for Polypropylene Glycol in<i>Sphingobium</i>sp. Strain PW-1 (2008)

Polypropylene glycol (PPG)-assimilating Sphingobium sp. strain PW-1 was grown on 0.5% PPG 700. PPG and its metabolites were analyzed by MALDI-TOF mass spectrometry. An oxidized form of a terminal alcohol group appeared with each molecular species as a metabolite. Cell-free extract showed PPG dehydrogenase activity. In this way, the oxidative metabolic pathway for PPG was confirmed.
Three-dimensional linear solution for wave propagation with sloping bottom (1997)

This paper presents a three-dimensional analytic linear wave solution for surface gravity wave propagation over a sloping bottom that is valid for small, but realistic, slopes. The sloping-bottom linear model is compared to published laboratory data and to predictions of two-dimensional, constant-bottom nonlinear theories. The model is shown to describe the measured wave-height growth in the wave transformation region up to a limiting local Ursell number U/sub r/ of 0.35-1.0, depending on the wave type, although, as a linear model, it does not predict the harmonics observed in that range. For U/sub r/<0.35, the harmonics can generally be neglected and the sloping-bottom linear theory agrees closely with both the published wave-height data and third-order Stokes nonlinear theory. As a three-dimensional linear model, superposition can be invoked to synthesize and relate wave structure in the transformation region to complex incident ocean spectra with both wind wave and swell components that arrive with a range of incidence angles. As such, the sloping-bottom linear model presented here should be a convenient useful tool for ocean modeling through a significant portion of the wave transformation region.
Dynamic memoization for energy efficiency in financial applications (2011)

Software applications directly impact on IT energy consumptions as they indirectly guide hardware operations. Optimizing algorithms has a direct beneficial impact on energy efficiency, but it requires domain knowledge and an accurate analysis of the code, which may be infeasible and too costly to perform for large code bases. In this paper we present an approach based on dynamic memoization to increase software energy efficiency. This implies to identify a subset of pure functions that can be tabulated and to automatically store the results corresponding to the most frequent invocations. We implemented a prototype software system to apply memoization and tested it on a set of financial functions. Empirical results show average energy savings of 74% and time performance savings of 79%.
Pediatric gastrointestinal disease,Pathophysiology diagnosis,Management (1991)

Volume 1: Approach to the child and family cardinal manifestations-pathophysiology development of gastrointestinal tract and accessory organs clinical manifestations and management - the mouth, esophagus, sytomach and duodenum, intestines. Volume 2: Clinical manifestations and management - the liver ad biliary tree, the pancreas diagnosis of gastrointestinal disease in children principles of therapy.