gebhart/patrepeval huggingface dataset:
Distributed Learning Policies for Power Allocation in Multiple Access Channels (2012)

We analyze the power allocation problem for orthogonal multiple access channels by means of a non-cooperative potential game in which each user distributes his power over the channels available to him. When the channels are static, we show that this game possesses a unique equilibrium; moreover, if the network's users follow a distributed learning scheme based on the replicator dynamics of evolutionary game theory, then they converge to equilibrium exponentially fast. On the other hand, if the channels fluctuate stochastically over time, the associated game still admits a unique equilibrium, but the learning process is not deterministic; just the same, by employing the theory of stochastic approximation, we find that users still converge to equilibrium. Our theoretical analysis hinges on a novel result which is of independent interest: in finite-player games which admit a (possibly nonlinear) convex potential, the replicator dynamics converge to an ε-neighborhood of an equilibrium in time O(\log(1/ε)).
Geomagnetically induced current effects on transformers (2002)

Geomagnetically induced currents (GICs) can cause saturation of the magnetic circuit of transformers in a power system. This saturation can increase the MVAr absorption of the transformers, leading to voltage-control problems, generating significant harmonic currents, and cause heating of the internal components of the transformer itself, leading to gas relay alarm/operation as well as possible damage. This paper sets out the methods used to examine these effects using a mathematical model explicitly incorporating the electric and magnetic circuits, including the shunting effect of the tank to predict the current and flux waveforms. The model has been used to predict GIC effects for a variety of winding connections for single-, three-, and five-limb core-type transformers connected to the National Grid Company plc transmission system in England and Wales. The size and form of the return limbs along with the tank shunting effect determine the magnitude and the often complex shape of the waveforms resulting from GIC. Field and factory DC injection tests on various types of transformers have been conducted to validate the model and gain an insight into the magnetic behavior of transformers. With the aid of finite-element analysis (FEA) techniques and a consideration of the various constructional arrangements of the core and coils in the tank, it is possible to evaluate the power losses and accompanying temperature rises of the core, structural components, windings, and tank. Some guidance on the acceptable GIC current levels for various transformer types is given.
Extending Unix for scalable computing (1993)

Because it retrieves all instructions and data from a single memory, the von Neumann computer architecture has a fundamental speed limit. The scalable multicomputer architecture, which uses many microprocessors together to solve a single problem and can run at teraflop speeds, may be a solution. While teraflop processor technology is known, the scalable operating and I/O system technology necessary for those speeds are not known. The authors describe how Unix can be extended to scalable computing, permitting teraflop speeds and offering parallel computing to users unfamiliar with parallel programming. They designed this technology into the system software of the Ncube-2, the predecessor to Ncube's announced teraflop parallel computer. The authors describe the system in detail and provide some performance results.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
An accurate and complete frequency dependent transmission line characterization using S-parameter measurements (2003)

A very accurate and complete characterization of interconnects is presented. The method is based upon high-frequency S-parameter measurements of two lines of different lengths. The influence of the contact structures of the measurement probes are taken into account with the help of three additional measurements. A comparison of results obtained from measurements on a silicon substrate and from calculations is given and shows excellent agreement.
Two new prediction rules for spontaneous pregnancy leading to live birth among subfertile couples, based on the synthesis of three previous models (2004)

The synthesis models performed better and had a broader empirical basis than the original models. They are therefore better suitable for application in other centres.
Classes, Priorities and Fairness in Queueing Systems (2004)

Customer classification and prioritization are commonly used in many applications to provide queue preferential service. Their influence on queuing systems has been thoroughly studied from the delay distribution perspective. However, the fairness aspects, which are inherent to any preferential system and highly important to customers, have hardly been studied and not been quantified to date. In this work we use the Resource Allocation Queueing Fairness Measure (RAQFM) to analyze such systems and derive their relative fairness values. Results from analyzing and comparing systems with class priority to systems with no prioritization, show that assigning higher priority to short jobs often increases the system fairness, but not always. We also analyze the effect multiple servers have on fairness, showing that multiple servers increase the fairness of the system. Practitioners can use the derived results to weigh efficiency aspects versus fairness aspects in controlling their queueing systems.
Manufacturing Process and Component Analysis of Seawater Salt Using Seaweeds (2007)

In this research, we have developed a manufacturing process for seawater salt by horizontal spray drying technique using the deep ocean water and seaweed(sea tangle). Deep ocean water, strong acidic electrolyzed water and strong alkaline electrolyzed water were used as extraction solvent of seaweed. Sodium content in seaweed extract solution by strong alkaline electrolyzed water was 1.63(mg/g), which was 3.5 times lower than of seaweed extract by strong acidic electrolyzed water. Major mineral content(Na, K, Ca) in seawater salt by deep ocean water were higher than strong acidic electrolyzed water and strong alkaline electrolyzed water. On the contrary, Mg contents in seawater salt by deep ocean water were lower than strong acidic electrolyzed water and strong alkaline electrolyzed water. Based on the results of seawater salt production using seaweed, it is possible to make law-salt efficiently.
Rho‐kinase inhibition enhances axonal regeneration after peripheral nerve injury (2006)

In injured adult neurons, the process of axonal regrowth and reestablishment of the neuronal function have to be activated. We assessed in this study whether RhoA, a key regulator of neurite elongation, is activated after injury to the peripheral nervous system. RhoA is activated in motoneurons but not in Schwann cells after mouse sciatic nerve injury. To examine whether the activation of RhoA and its effector, Rho-kinase, retards axon regeneration of injured motoneurons, we employed a Rho-kinase inhibitor, fasudil. Amplitudes of distally evoked compound muscle action potentials are increased significantly faster after axonal injury in mice treated with fasudil compared with controls. Histological analysis shows that fasudil treatment increases the number of regenerating axons with large diameter, suggesting that axon maturation is facilitated by Rho-kinase inhibition. In addition, fasudil does not suppress the myelination of regenerating axons. These findings suggest that RhoA/Rho-kinase may be a practical molecular target to enhance axonal regeneration in human peripheral neuropathies.
First-break timing; arrival onset times by direct correlation (1999)

Abstract In attenuating media, pulse characteristics evolve with propagation distance and saturation or pressure-dependent changes in rock properties. This nonstationarity of the waveform complicates determination of meaningful traveltimes. As a result, depending on the time-picking criteria used, substantially different values of interval velocity can be obtained. This problem is particularly severe in high-frequency laboratory time-of-flight measurements on porous rock. A potentially less ambiguous measure of wave speed is the signal velocity that is calculated using the pulse onset time. Here, a semiautomated method is developed to determine this onset time in high-fidelity, pressure-dependent core measurements. The greatest value of Pearson's correlation coefficient between segments of observed waveforms near the pulse onset and at an appropriate reference serves as the time determination criterion. Tests of the method on artificial data suggest the signal velocity may be determined to better than 0.3% for -60 dB noise or 1.2% for -37 dB noise. A real data set is tested, comprised of a series of ultrasonic (1 MHz) velocity measurements in microcracked rock to confining pressures of 300 MPa ( approximately 45,000 psi). At the lowest confining pressure, where attenuation is greatest, signal onset and more conventionally derived traveltimes differ by more than 4%. This large discrepancy illustrates that care should be exercised when determining velocity in such attenuating materials. Conversely, the consistency of waveform attributes, such as the difference between the onset time and the first peak time or the apparent quality factor, is useful when estimating intrinsic material velocities in low-porosity, microcracked carbonate and metamorphic rocks at high confining pressures.
Anterior Lumbar Fusion (1994)

One hundred fifty-one patients had an anterior interbody lumbar spinal fusion for intractable back pain. A solid bony fusion was obtained in 76% of the patients. Of patients unemployed before surgery, 50% had returned to work at review. Sixty-eight percent of patients rated themselves as significantly improved by the procedure. Posterior distraction instrumentation neither increased the rate of union nor improved the final results. Compensation status and psychological disturbance at presentation were significant prognostic factors. Psychological disturbance at review had a profound effect on the outcome and patient satisfaction ratings. It is recommended that in future studies compensation status and psychological disturbances are explicitly included in the outcome statistics.
Reduced control of motor output in a human hand muscle of elderly subjects during submaximal contractions (1993)

1. The effect of age on the motor output of the first dorsal interosseous muscle of 22 (6 female, 16 male) human subjects was investigated. The purpose of the study was to determine the effect of age on the control of muscle force and the associated changes in the discharge behavior and mechanical properties of single motor units. 2. Each subject performed three tasks requiring isometric abduction of the left index finger: a maximum voluntary contraction (MVC), a constant-force task, and a threshold task. The ability to control force was assessed during the constant-force task by quantifying the variation in isometric force about four submaximal target forces (5, 20, 35, and 50% MVC). The threshold task involved sustaining the discharge of the isolated motor unit at a low, steady rate for approximately 3 min. 3. The discharge behavior and the mechanical properties of single motor units were determined during the threshold task by measuring the interimpulse intervals and the peak amplitude and time to peak of the spike-triggered average force. 4. The data indicated that age had an effect on the variation of force about submaximal target forces (range: 5-50% MVC), and that these force variations, when calculated relative to the target force, were greater at lower force levels in the elderly subjects.(ABSTRACT TRUNCATED AT 250 WORDS)
A versatile recognition processor employing Haar-like feature and cascaded classifier (2009)

This paper presents a versatile recognition processor that performs detection and recognition of image, video, sound and acceleration signals, while dissipating 0.15µW/fps to 0.47mW/fps (Fig. 8.2.1). Given the low power dissipation of sub-mW/fps, this processor is suitable for use in portable electronics and wireless sensor networks (WSN) [1]. For instance, it detects human faces from a QVGA image with 81% accuracy and consumes 0.47mW/fps. Power consumption is 57× lower than that of conventional object recognition processors [2, 3] with comparable accuracy (Fig. 8.2.2). A fair comparison, by taking technology differences into account, shows greater than 8× power efficiency. This processor detects speech from very short and low quality sound signals (72ms in 10s, 8kHz, 8b) recorded by a microphone in a sensor node. It also recognizes human activities such as walking, reading and typing from short and low quality 3D acceleration signals (2s in 10s, 50Hz, 8b) taken by an accelerometer. Recognition accuracy is over 90% in both applications. The versatility and low-power dissipation are attributed to optimal VLSI design from algorithm to architecture and circuit levels.
Cardiac Propagation Pattern Mapping With Vector Field for Helping Tachyarrhythmias Diagnosis With Clinical Tridimensional Electro-Anatomical Mapping Tools (2018)

Ventricular (VT) and atrial (AT) tachycardias are some of the most common clinical cardiac arrhythmias. For ablation of tachycardia substrates, two clinical diagnosis methods are used: invasive electroanatomical mapping for an accurate diagnosis using electrograms (EGMs) acquired with intracardiac catheters, and localized on the surface mesh of the studied cavities; and noninvasive electrocardiographic imaging (ECGi) for a global view of the arrhythmia, with EGMs mathematically reconstructed from body surface electrocardiograms using 3-D cardio-thoracic surface meshes obtained from CT-scans. In clinics, VT and AT are diagnosed by studying activation time maps that depict the propagation of the activation wavefront on the cardiac mesh. Nevertheless, slow conduction areas-a well-known proarrhythmic feature for tachycardias-and tachycardia specific propagation patterns are not easily identifiable with these maps. Therefore, local characterization of the activation wavefront propagation can be helpful for improving VT and AT diagnoses. The purpose of this study is to develop a method to locally characterize the activation wavefront propagation for clinical data. For this, a conduction velocity vector field is estimated and analyzed using divergence and curl mathematical operators. The workflow was first validated on a simulated database from computer models, and then applied to a clinical database obtained from ECGi to improve AT diagnosis. The results show the relevancy and the efficacy of the proposed method to guide ablation of tachyarrhythmias.
Studies on the storage characteristics of khakra. (1991)

Khakra is a crisp wheat based flatbread, like a chapati, with a low moisture content (4-6%). Storage characteristics of khakra were investigated at normal (27
Leiomyosarcoma arising in the nasal cavity (2013)

We report a rare case of leiomyosarcoma arising in the nasal cavity. A 45-year-old woman visited our hospital because of recurrent epistaxis in 1998. A biopsy was performed on a mass in the posterior area of the left nasal cavity, and a histological diagnosis of leiomyosarcoma was made. Although the nasal tumor was resected via left lateral rhinotomy, tumor recurrence was detected. In addition, multiple metastatic tumors were detected in both lungs. Therefore, CyberKnife therapy was performed for the recurrent tumor and radiofrequency ablation for a large tumor among the metastatic lung tumors. Although the patient died of multiple metastasis of the whole body in 2007, tumors in the lungs and the primary site, which were treated with radiofrequency ablation and CyberKnife therapy, did not increase. Leiomyosarcoma has a poor prognosis, and when recurrence or distant metastasis occurs, radical cure is even more difficult. In this patient, CyberKnife therapy and radiofrequency ablation were effective for treating local recurrent and metastatic lesions. Even in patients in whom a radical cure is difficult due to recurrence or distant metastasis, CyberKnife therapy and radiofrequency ablation can relieve symptoms and prolong survival.
Advanced Tunability and High-Power TEM00-Operation of the Yb:YAG Thin Disc Laser (1997)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text A. Giesen, U. Brauch, I. Johannsen, M. Karszewski, U. Schiegg, C. Stewen, and A. Voss, "Advanced Tunability and High-Power TEM00-Operation of the Yb:YAG Thin Disc Laser," in Advanced Solid State Lasers, C. Pollock and W. Bosenberg, eds., Vol. 10 of OSA Trends in Optics and Photonics Series (Optica Publishing Group, 1997), paper HP2. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Hyperactivation of JAK1 tyrosine kinase induces stepwise, progressive pruritic dermatitis (2016)

Skin homeostasis is maintained by the continuous proliferation and differentiation of epidermal cells. The skin forms a strong but flexible barrier against microorganisms as well as physical and chemical insults; however, the physiological mechanisms that maintain this barrier are not fully understood. Here, we have described a mutant mouse that spontaneously develops pruritic dermatitis as the result of an initial defect in skin homeostasis that is followed by induction of a Th2-biased immune response. These mice harbor a mutation that results in a single aa substitution in the JAK1 tyrosine kinase that results in hyperactivation, thereby leading to skin serine protease overexpression and disruption of skin barrier function. Accordingly, treatment with an ointment to maintain normal skin barrier function protected mutant mice from dermatitis onset. Pharmacological inhibition of JAK1 also delayed disease onset. Together, these findings indicate that JAK1-mediated signaling cascades in skin regulate the expression of proteases associated with the maintenance of skin barrier function and demonstrate that perturbation of these pathways can lead to the development of spontaneous pruritic dermatitis.
Applied Network Security Monitoring: Collection, Detection, and Analysis (2013)

Applied Network Security Monitoring is the essential guide to becoming an NSM analyst from the ground up. This book takes a fundamental approach to NSM, complete with dozens of real-world examples that teach you the key concepts of NSM. Network security monitoring is based on the principle that prevention eventually fails. In the current threat landscape, no matter how much you try, motivated attackers will eventually find their way into your network. At that point, it is your ability to detect and respond to that intrusion that can be the difference between a small incident and a major di
Impact of traffic splitting on the delay performance of MPTCP (2014)

MPTCP is a promising transport technique to boost throughput of wireless multi-homed device by supporting multiple concurrent transmissions through heterogeneous wireless interfaces. As the number of concurrent subflows increase, MPTCP can achieve a linearly increasing throughput performance, but it is unclear how much improvement in the end-to-end delay performance can be attained from additional subflows. In this paper, we develop an analytical framework to understand the end-to-end delay performance of MPTCP that accounts for TCP dynamics and subflow interactions. Interestingly, it turns out that the delay performance can be even degraded with additional subflows. Considering MPTCP in heterogeneous wireless networks of Wi-Fi and LTE, we formulate a cost minimization problem subject to the end-to-end delay constraint. Based on the insight obtained from our model, we approximate the problem and develop a greedy scheme that splits traffic to minimize the cost while satisfying the delay constraints. Through simulations, we demonstrate that our proposed scheme outperforms the conventional MPTCP, and significantly improves the delay performance while lowering the user cost.
A presenilin dimer at the core of the γ-secretase enzyme: Insights from parallel analysis of Notch 1 and APP proteolysis (2003)

Notch receptors and the amyloid precursor protein are type I membrane proteins that are proteolytically cleaved within their transmembrane domains by a presenilin (PS)-dependent gamma-secretase activity. In both proteins, two peptide bonds are hydrolyzed: one near the inner leaflet and the other in the middle of the transmembrane domain. Under saturating conditions the substrates compete with each other for proteolysis, but not for binding to PS. At least some Alzheimer's disease-causing PS mutations reside in proteins possessing low catalytic activity. We demonstrate (i) that differentially tagged PS molecules coimmunoprecipitate, and (ii) that PS N-terminal fragment dimers exist by using a photoaffinity probe based on a transition state analog gamma-secretase inhibitor. We propose that gamma-secretase contains a PS dimer in its catalytic core, that binding of substrate is at a site separate from the active site, and that substrate is cleaved at the interface of two PS molecules.
Spitzer Space Telescope proposal process (2006)

This paper discusses the Spitzer Space Telescope General Observer proposal process. Proposals, consisting of the scientific justification, basic contact information for the observer, and observation requests, are submitted electronically using a client-server Java package called Spot. The Spitzer Science Center (SSC) uses a one-phase proposal submission process, meaning that fully-planned observations are submitted for most proposals at the time of submission, not months after acceptance. Ample documentation and tools are available to the observers on SSC web pages to support the preparation of proposals, including an email-based Helpdesk. Upon submission proposals are immediately ingested into a database which can be queried at the SSC for program information, statistics, etc. at any time. Large proposals are checked for technical feasibility and all proposals are checked against duplicates of already approved observations. Output from these tasks is made available to the Time Allocation Committee (TAC) members. At the review meeting, web-based software is used to record reviewer comments and keep track of the voted scores. After the meeting, another Java-based web tool, Griffin, is used to track the approved programs as they go through technical reviews, duplication checks and minor modifications before the observations are released for scheduling. In addition to detailing the proposal process, lessons learned from the first two General Observer proposal calls are discussed.