gebhart/patrepeval huggingface dataset:
Measurement-Driven Guidelines for 802.11 WLAN Design (2009)

Dense deployments of WLANs suffer from increased interference and, as a result, reduced capacity. There are three main functions used to improve the overall network capacity: 1) intelligent frequency allocation across access points (APs); 2) load-balancing of user affiliations across APs; and 3) adaptive power control for each AP. Several algorithms have been proposed in each category, but so far, their evaluation has been limited to: a) each approach in isolation; and b) simulations or small-scale testbeds. In this paper, we ask the question: What is the best way to combine these different functions? Our focus is to fully explore the interdependencies between the three functions in order to understand when and how to deploy them on a network. We follow a measurement-driven study to quantify the effects of three previously proposed optimization schemes (one for each category) on a relatively large testbed and in many different scenarios. Surprisingly, we find that blindly applying all the three optimization schemes is not always preferable; it can sometimes degrade the performance by as much as 24% compared to using only two of the schemes. We discover that there are explicit conditions that are conducive for applying specific combinations of the optimization schemes. We capture these conditions within a comprehensive framework, which we call measurement-driven guidelines (MDG). While we derive such guidelines based on measurements on one experimental testbed, we test their applicability and efficacy on a second testbed in a different location. We show that our framework improves network capacity consistently across both testbeds, with improvements ranging from 22% to 142% with 802.11a, and 103% to 274% with 802.11g.
Selective and Nonselective Cyclooxygenase-2 Inhibitors and Experimental Fracture-Healing (2007)

Cyclooxygenase-2-specific drugs inhibit fracture-healing more than nonspecific nonsteroidal anti-inflammatory drugs, and the magnitude of the effect is related to the duration of treatment. However, after the discontinuation of treatment, prostaglandin E2 levels are gradually restored and the regain of strength returns to levels similar to control.
Channel Modeling for Vehicle-to-Vehicle Communications and Networking (2012)

This chapter provides a description of physical layer characteristics for the mobile wireless channel for vehicle-to-vehicle (V2V) communication and networking applications. Due to the low antenna elevations, and mobility of both transmitters and receivers in the V2V environment, the V2V wireless channel can be one of the most challenging elements to ensuring reliable V2V communication.
Concise Enantioselective Syntheses of Quinolactacins A and B through Alternative Winterfeldt Oxidation (2003)

Enantioselective total syntheses of (+)-quinolactacin B and (+)-quinolactacin A2 through asymmetric Pictet-Spengler cyclization and KO(2) oxidation-an alternative Winterfeldt condition-are described.
Analog Signal Processing for Pulse Compression Radar in 90-nm CMOS (2012)

This paper presents a pulse-compression radar baseband analog signal processing integrated in a silicon process for low cost and power dissipation. The analog signal-processing circuitry exhibits the autocorrelation properties of the polyphase codes, maximizes the sensitivity and resolution of a pulse radar system, and alleviates speed and resolution requirements of the analog-to-digital converter (ADC) via an analog correlator. The circuitry includes a two-stage variable gain amplifier (VGA) for high dynamic range, a correlator/integrator circuit, a comparator, and offset calibration circuits. The differential 6-bit VGA is designed to adaptively track the Friis path loss through rapid change of the VGA gain and offset calibration, relaxing the dynamic range requirements of the correlator. The measured performance shows a VGA gain variation of 52 dB and a VGA group-delay imbalance of 50 ps over 64 states. The high-speed pulse compression/correlation is performed in analog current domain and the speed requirement on the ADC is reduced by a factor equal to the duty cycle lowering the ADC power consumption. The chip is fabricated in a 90-nm process, wire bonded on the FR4 printed circuit board, and tested with a Stratix IV field-programmable gate-array board to evaluate the system performance for different radar polyphase codes.
Creation of an artificial metalloprotein with a Hoveyda–Grubbs catalyst moiety through the intrinsic inhibition mechanism of α-chymotrypsin (2011)

An L-phenylalanyl chloromethylketone-based inhibitor equipped with a Hoveyda-Grubbs catalyst moiety was regioselectively incorporated into the cleft of α-chymotrypsin through the intrinsic inhibition mechanism of the protein to construct an artificial organometallic protein.
Hemispheric specialization for English and ASL (1998)

Functional magnetic resonance imaging (fMRI) was used to compare the cerebral organization during sentence processing in English and in American sign language (ASL). Classical language areas within the left hemisphere were recruited by both English in native speakers and ASL in native signers. This suggests a bias of the left hemisphere to process natural languages independently of the modality through which language is perceived. Furthermore, in contrast to English, ASL strongly recruited right hemisphere structures. This was true irrespective of whether the native signers were deaf or hearing. Thus, the specific processing requirements of the language also in part determine the organization of the language systems of the brain.
A <formula><tex>$C/L$</tex></formula>-Band Gain-Clamped SOA-Raman Hybrid Amplifier for CWDM Access Networks (2008)

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> We demonstrate an 83-nm flat gain-bandwidth gain-clamped semiconductor optical amplifier-Raman hybrid amplifier for coarse wavelength-division-multiplexing (CWDM) access networks. Four channels of 2.488-Gb/s CWDM signals were amplified and the input dynamic range for 1-dB bit-error-rate power penalty exceeds 17.3 dB. </para>
An Iterative Method to Stabilize a Transfer Function in the<tex>$s$</tex>- and<tex>$z$</tex>-Domains (2006)

Stability of the identified model is crucial in simulations and prediction applications. This paper proposes a two-step procedure that generates guaranteed stable transfer function (matrix) models from noisy data. It consists of an unconstrained optimal noise removal step followed by a stable approximation of the possible unstable estimate. The proposed method is applicable to continuous-time as well as discrete-time and multivariable systems
Why the LWD and Wireline Gamma Ray Measurements May Read Different Values in the Same Well (2006)

Abstract Many concerns have been expressed regarding discrepancies between LWD (Logging-While-Drilling) and WL (Wireline) GR (natural gamma ray) responses in various wells. It has been suggested that these differences may arise from the variations in tool design that would be sensitive to the relative mixture concentration differences of Thorium, Uranium and Potassium between the University of Houston calibration test pits and the actual formations logged. Other causes have been attributed to errors in the characterization process and to the amount and accuracy of the borehole corrections algorithms applied to the measured values. To answer these questions, we used the Monte Carlo code MCNP in combination with an in-house code, GAMRES, to simulate the response of the various gamma-ray detectors in a variety of LWD and Wireline tools. Each tool is sensitive to the Thorium, Uranium and Potassium concentrations depending on their particular geometric parameters such as NaI crystal size and thickness of the collar material surrounding the detector. To determine this sensitivity, an overall sensitivity coefficient is calculated for each tool at the time of calibration in a pit of known concentrations of Thorium, Uranium and Potassium. Under different borehole conditions (mud weight, barite mud, borehole size, etc), the tools would respond differently depending on their particular sensitivity. This modeling allows us to assess the difference in API units between the LWD and Wireline gamma-ray based on the tools geometric configuration, borehole size, Thorium, Uranium and Potassium concentrations, and mud weights both before and after applying the published borehole correction algorithms. Results from this study indicate that significant response differences may arise, not from tool design differences, but from different borehole and/or mud conditions if appropriate corrections are not applied.
Characteristics of Double-Gate Ga–In–Zn–O Thin-Film Transistor (2010)

A Ga-In-Zn-O thin-film transistor with double-gate structure is reported. Enhancement-mode operation that is essential to the constitution of a low-power digital circuitry is easily achieved when the upper and lower gate electrodes are tied together. The saturation mobility and the subthreshold swing are improved from 3.65 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> /(V·s) and 0.44 V/dec to 18.9 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> /(V·s) and 0.14 V/dec, respectively, compared with the single-gate structure. We can modulate the threshold voltage of either gate by adjusting the bias on the other gate.
Guidelines for large scale MW-processing of hardmetals (1995)

MW-sintering of hardmetals has the potential of reducing the processing time and improving mechanical properties. However for a large scale MW-processing the influence of penetration depth of MW-radiation and EM-field pattern distortion has to be known. Because information on penetration depth calculated from dielectric property measurement or DC-conductivity is not sufficient, a method to calculate the penetration depth from calorimetric measurement is discussed. For a homogeneous MW-sintering process the field can be adapted to the hardmetal batch by using a variable size multi-mode cavity.
Combating Against Attacks on Encrypted Protocols (2007)

Attacks against encrypted protocols are becoming increasingly popular. They pose a serious challenge to the conventional intrusion detection systems (IDSs) which heavily rely on inspecting the network packet fields and are consequently unable to monitor encrypted sessions. IDSs can be broadly categorized into two types: signature-based and anomaly-based IDSs. The signature-based IDSs rely on previous attack signatures but are often ineffective against new attacks. On the other hand, anomaly-based detection systems depend on detecting the change in the protocol behavior caused by an attack. The latter can be employed to detect novel attacks, and therefore are often preferred over their signature-based counterpart. In this paper, we envision an anomaly-based IDS which can detect attacks against popular encrypted protocols, such as SSH and SSL. The proposed system creates a normal behavior profile and uses non-parametric Cusum algorithm to detect deviation from the normal profile. Upon detecting an anomaly, the proposed mechanism generates an alert, sets a delay to the protocol response, and traces back the attacker. The effectiveness of the proposed detection scheme is verified via simulations.
CO<sub>2</sub>/CH<sub>4</sub> Permeation Characteristics of a New Type DDR Zeolite Membrane (2007)

本研究では，二酸化炭素（CO2）/メタン（CH4）分離膜として最近開発されたDDR型ゼオライト膜を用いて様々な単成分ガスの透過やCO2/CH4混合ガスの透過を測定し，各気体の透過機構や分離機構の解明を行い，他の分離膜との性能比較を行った．まず，He, H2, CO2, O2, N2, CH4の単成分ガスの透過流束を測定し，CO2は主に吸着に起因し，CH4はDDRゼオライト細孔による分子ふるいに起因する透過機構であることを明らかにした．また，加圧透過試験およびスウィープ試験による298 Kでの単成分ガスのCO2/CH4理想分離係数は供給圧力0.2 MPa，透過圧力0.1 MPaのとき最大でそれぞれ336, 170となった．次に，スウィープ試験で測定したCO2/CH4混合ガス（50 : 50）と単成分ガスの透過流束および分離係数を比較した結果，すべての圧力範囲においてCO2の透過流束は混合ガスより単成分ガスの方が高く，CH4の透過流束は混合ガスと単成分ガスとで変化はなかった．さらに，混合ガスを用いた加圧透過試験では供給圧力0.6 MPaで分離係数が極大値を示し，そのときの値は106であり，スウィープ試験では供給圧力が大気圧のとき分離係数が最大値200を示し，圧力の増加に伴い分離係数は減少した．本膜を近年報告されている他のCO2/CH4分離膜と性能比較した結果，CO2/CH4分離性能およびCO2透過性能ともに高いゼオライト膜であることを明らかにした．
Determination of HHG spectrum by measuring the mutual coherence (2002)

The interference pattern resulting from a double slit (or pinhole pair) is commonly used to measure the spatial coherence properties of a light source in the visible 1 , as well as in the extreme ultraviolet (EUV) 2,3 regions of the spectrum. This interference pattern results from the path difference of the incident light field from each slit to the observation point. In a standard spatial coherence measurement, the incident field is assumed to be quasi-monochromatic, so that temporal coherence effects are isolated from a measurement of spatial coherence. However, under conditions where a broad bandwidth source illuminates a pinhole pair, the interference pattern will contain both temporal and spatial coherence information of the source, as well as the power spectrum. In this talk we show that the spectrum of a beam can be extracted from a measurement of a double-pinhole interference pattern and the geometry of the set-up 4 . Such a spectral measurement is unique in that it determines the absolute wavelength and relative spectral intensity of the source, which is a great advantage in the EUV region where calibration is very difficult.
Assessment of N‐Terminal Prohormone B‐Type Natriuretic Peptide as a Measure of Vascular and Ventricular Function in Pediatric Pulmonary Arterial Hypertension (2015)

Pulmonary arterial hypertension (PAH) is a progressive disease that puts excessive mechanical loads on the ventricle due to a gradual increase in pulmonary vascular impedance. We hypothesize that the increase in right ventricular (RV) afterload is reflected in the concentration of circulating biochemical markers of ventricular strain and stress (B-type natriuretic peptide [BNP] and N-terminal prohormone BNP [NT-proBNP]). We retrospectively analyzed right heart catheterization (RHC) and serum biochemical analysis data ([Formula: see text]) for a pediatric PAH cohort with no sign of left ventricular dysfunction. Using RHC data, we computed an estimate of pulmonary vascular resistance (PVR), compliance, and ventricular-vascular coupling. We also compared how the early onset of interventricular decoupling (characterized as septal flattening) impacts serum NT-proBNP concentrations. Our data revealed correlated NT-proBNP expression with both the resistive and reactive components of RV afterload, an estimate of ventricular-vascular coupling, and a significant increase in biomarker expression in patients with a flattened interventricular septum. Furthermore, the strong correlation between PVR and NT-proBNP appears to break down under flat septum morphology. Over 80% of resistive RV afterload variance is reflected in serum NT-proBNP concentration in pediatric patients with PAH with no sign of left ventricular dysfunction. Reactive afterload appears to contribute to myocardial NT-proBNP release at advanced stages of PAH. Therefore, in mild-to-moderate PAH, resistive afterload is likely the greatest contributor to RV wall stress. These findings could also be used to estimate invasive RHC measurements from serum biochemical analysis, but more work is needed to improve correlations and overcome the issue of interventricular decoupling.
Wetting of fiber mats for composites manufacturing: I. Visualization experiments (1995)

Abstract Wetting of glass fibers was visualized using an oil with the same refractive index. With both a video‐enhanced microscope and a high‐magnification video camera we followed the flow front and qualitatively measured the entrapped air bubbles by image analysis. Due to different permeabilities between the fiber mats and bundles, air bubbles are entrapped. Two major kinds of air bubbles are observed: small cylindrical micro voids between fiber filaments (inside fiber bundles) and spherical macro voids outside fiber bundles. These air bubbles can be described by three major mechanisms initial liquid bypassing/air trapping, later capillary invasion of disordered fiber bundles, and air bubble mobilization. Both random and unidirectional fiber mats were used in this study. Vacuum as well as different fluid viscosities and surface tensions were also investigated, which led us to guidelines of optimum processing parameters of fiber wetting for resin transfer molding and structural reaction injection molding. They are low viscosity, vacuum, high mold temperature, and high pressure.
Gastrointestinal Tract Dysbiosis Enhances Distal Tumor Progression through Suppression of Leukocyte Trafficking (2019)

The overall use of antibiotics has increased significantly in recent years. Besides fighting infections, antibiotics also alter the gut microbiota. Commensal bacteria in the gastrointestinal tract are crucial to maintain immune homeostasis, and microbial imbalance or dysbiosis affects disease susceptibility and progression. We hypothesized that antibiotic-induced dysbiosis of the gut microbiota would suppress cytokine profiles in the host, thereby leading to changes in the tumor microenvironment. The induced dysbiosis was characterized by alterations in bacterial abundance, composition, and diversity in our animal models. On the host side, antibiotic-induced dysbiosis caused elongated small intestines and ceca, and B16-F10 melanoma and Lewis lung carcinoma progressed more quickly than in control mice. Mechanistic studies revealed that this progression was mediated by suppressed TNFα levels, both locally and systemically, resulting in reduced expression of tumor endothelial adhesion molecules, particularly intercellular adhesion molecule-1 (ICAM-1) and a subsequent decrease in the number of activated and effector CD8<sup>+</sup> T cells in the tumor. However, suppression of ICAM-1 or its binding site, the alpha subunit of lymphocyte function-associated antigen-1, was not seen in the spleen or thymus during dysbiosis. TNFα supplementation in dysbiotic mice was able to increase ICAM-1 expression and leukocyte trafficking into the tumor. Overall, these results demonstrate the importance of commensal bacteria in supporting anticancer immune surveillance, define an important role of tumor endothelial cells within this process, and suggest adverse consequences of antibiotics on cancer control. SIGNIFICANCE: Antibiotic-induced dysbiosis enhances distal tumor progression by altering host cytokine levels, resulting in suppression of tumor endothelial adhesion molecules and activated and effector CD8<sup>+</sup> T cells in the tumor.
The Epithelial Sodium Channel Is a Modifier of the Long-Term Nonprogressive Phenotype Associated with F508del CFTR Mutations (2017)

Cystic fibrosis (CF) remains the most lethal genetic disease in the Caucasian population. However, there is great variability in clinical phenotypes and survival times, even among patients harboring the same genotype. We identified five patients with CF and a homozygous F508del mutation in the CFTR gene who were in their fifth or sixth decade of life and had shown minimal changes in lung function over a longitudinal period of more than 20 years. Because of the rarity of this long-term nonprogressive phenotype, we hypothesized these individuals may carry rare genetic variants in modifier genes that ameliorate disease severity. Individuals at the extremes of survival time and lung-function trajectory underwent whole-exome sequencing, and the sequencing data were filtered to include rare missense, stopgain, indel, and splicing variants present with a mean allele frequency of <0.2% in general population databases. Epithelial sodium channel (ENaC) mutants were generated via site-directed mutagenesis and expressed for Xenopus oocyte assays. Four of the five individuals carried extremely rare or never reported variants in the SCNN1D and SCNN1B genes of the ENaC. Separately, an independently enriched rare variant in SCNN1D was identified in the Exome Variant Server database associated with a milder pulmonary disease phenotype. Functional analysis using Xenopus oocytes revealed that two of the three variants in δ-ENaC encoded by SCNN1D exhibited hypomorphic channel activity. Our data suggest a potential role for δ-ENaC in controlling sodium reabsorption in the airways, and advance the plausibility of ENaC as a therapeutic target in CF.
Studying dipole moment modification in a single fluorescent dye beside metallic Nano-Particle based on the Green's function theory (2013)

Enhancement of dipolar scattering can be achieved by locating the emitting dipole near a resonant nanosphere. In this study the dipole represents a fluorescent dye or an emitting quantum dot, and the nanosphere exhibits a plasmonic resonance at optical frequencies. It has been shown several times that a dipole excitation and emission can be greatly affected by the presence of a nanosphere at nanomener distance. This was considered for example in (J. Gersten, A. Nitzan, J. Chem. Phys. 73(7), 1980) in the case of Raman scattering, and in many other experimental works.
Generalized FLP impossibility result for t-resilient asynchronous computations (1993)

Article Generalized FLP impossibility result for t-resilient asynchronous computations Share on Authors: Elizabeth Borowsky View Profile , Eli Gafni View Profile Authors Info & Claims STOC '93: Proceedings of the twenty-fifth annual ACM symposium on Theory of ComputingJune 1993 Pages 91–100https://doi.org/10.1145/167088.167119Published:01 June 1993 253citation1,341DownloadsMetricsTotal Citations253Total Downloads1,341Last 12 Months82Last 6 weeks6 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
Felbamate for partial seizures (1991)

Felbamate (2-phenyl-1,3-propanediol dicarbamate) has a favorable preclinical profile in animal models of epilepsy. We present the results of a double-blind, randomized, placebo-controlled clinical trial in patients with partial seizures. Criteria for entry included a requirement for four or more partial seizures per month despite concomitant therapeutic blood levels of phenytoin and carbamazepine. Fifty-six patients (mean age, 31.4 years; 32 men, 24 women) completed the trial. The mean seizure frequencies for the 8-week periods analyzed were felbamate = 34.9, placebo = 40.2. Felbamate was statistically superior to placebo in seizure reduction, percent seizure reduction, and truncated percent seizure reduction. The mean felbamate dosage was 2,300 mg/d. Plasma felbamate concentrations ranged from 18.4 to 51.9 mg/l, mean = 32.5 mg/l. Adverse experiences during felbamate therapy were minor and consisted primarily of nausea and CNS effects. This trial indicates that felbamate is safe and effective in the treatment of comedicated patients with severely refractory epilepsy.