gebhart/patrepeval huggingface dataset:
State-space and singular-value decomposition-based approximation methods for the harmonic retrieval problem (1983)

We present new high-resolution methods for the problem of retrieving sinusoidal processes from noisy measurements. The approach taken is by use of the so-called principal-components method, which is a singular-value-decomposition-based approximate modeling method. The low-rank property and the algebraic structure of both the data matrix and the covariance matrix (under noise-free conditions) form the basis of exact modeling methods. In a noisy environment, however, the rank property is often perturbed, and singular-value decomposition is used to obtain a low-rank approximant in factored form. The underlying algebraic structure of these factors leads naturally to least-squares estimates of the state-space parameters of the sinusoidal process. This forms the basis of the Toeplitz approximation method, which offers a robust Pisarenko-like spectral estimate from the covariance sequence. Furthermore, the principle of Pisarenko’s method is extended to harmonic retrieval directly from time-series data, which leads to a direct-data approximation method. Our simulation results indicate that favorable resolution capability (compared with existing methods) can be achieved by the above methods. The application of these principles to two-dimensional signals is also discussed.
An<i>E.coli</i>RuvC mutant defective in cleavage of synthetic Holliday junctions (1993)

Escherichia coli RuvC protein is a specific endonuclease that resolves recombination intermediates into viable products. The structural features needed for RuvC activity were investigated by sequencing three ruvC mutations and relating the base pair changes identified to the activity of the mutant proteins. Each of the three mutations is a single base-pair substitution. ruvC51 converts glycine-15 to an aspartic acid residue. The product of ruvC51 was purified and shown to retain the ability to bind junctions, albeit with a slightly reduced affinity. However, it has lost the ability to resolve these structures by symmetrical cleavage. A multicopy ruvC51 plasmid confers sensitivity to UV light in a ruvC+ strain. The ruvC53 allele causes a glycine-17 to serine substitution while ruvC55 produces a stop codon. Neither of these genes produces a stable product. The results suggest that the N-terminal domain of RuvC may be concerned with cleavage of junctions.
Service Continuity for Subscribers of the Mobile Real World Internet (2011)

The Real World Internet or the Web of Things has brought an approach to integrate wireless sensor devices in a manner that is natural to the Web, where sensors are exposed as addressable web resources like any other web resource. Although there is still a clear deficiency with regards to managing the mobility of the sensor devices in this approach, and how it affects the service and the users interacting with it. The work presented here addresses this issue and aims to provide an approach towards maintaining service continuity of migrating sensor devices in a framework that builds upon the concept of the 'Web of Things'.
Information-theoretic bounds on target recognition performance based on degraded image data (2002)

This paper derives bounds on the performance of statistical object recognition systems, wherein an image of a target is observed by a remote sensor. Detection and recognition problems are modeled as composite hypothesis testing problems involving nuisance parameters. We develop information-theoretic performance bounds on target recognition based on statistical models for sensors and data, and examine conditions under which these bounds are tight. In particular, we examine the validity of asymptotic approximations to probability of error in such imaging problems. Problems involving Gaussian, Poisson, and multiplicative noise, and random pixel deletions are considered, as well as least-favorable Gaussian clutter. A sixth application involving compressed sensor image data is considered in some detail. This study provides a systematic and computationally attractive framework for analytically characterizing target recognition performance under complicated, non-Gaussian models and optimizing system parameters.
巨大成功,还是走向破产 现代媒体工作流的四大关键所在 (2014)

在数字媒体工作流的世界里,企业一直执着于做大做强。在最初的几年里,企业的存储基础架构无法跟上标清的需求,因此第一批非线性编辑系统是采用专有文件和文件系统格式的交钥匙解决方案。在过去的大约十年里,基于IT的解决方案已经追了上来,共享存储的开放解决方案价格实惠且易于获取。现在,我们已经从数字标清转向高清,并致力于推动4K的视频体验。与此同时,新的分发途径推动工作流提供快速直
Multi-modal Multi-threaded Online Forums (2010)

Abstract. This paper motivates and outlines multi-modal multi-threaded online forums. The basic idea is that rather than a single “reply ” mode as in current multi-threaded online forums, where the user can only indicate that a current input statement is a reply to an existing statement, the user can select from a menu among a range of ways the input statement relates to a particular existing statement. For example, in the menu might be “contradicts”, “is premise of”, “is conclusion of”, or “is an exception to ” relations. From such choices, one can construct an “argument dialogue”. The input statements are parsed and semanti-cally interpreted by the Attempto Controlled Language, ensuring grammatically well-formed statements with first order logic representations. The database of propositions and their relations can be used by further systems. Key words: online forums, argumentation 1
Characteristics of Interface-Modified Josephson Junctions Fabricated under Various Etching Conditions (2000)

We have studied the influence of process parameters on electrical properties for interface-modified junctions (IMJs) based on YBa 2 Cu 3 O x . Tunnel barriers are produced by an electron cyclotron resonance (ECR) plasma etching process and subsequent vacuum annealing. We have found that time and accelerating voltage ( V acc ) in the etching sequence, in which the ramp-edge geometry is defined, are very important parameters for the barrier formation. Increasing the etching time and accelerating voltage lead to the reduction of critical current densities. By setting these parameters at appropriate values, we can control the critical current of the IMJs. We have also found that the IMJs with high junction resistance, which are fabricated at higher accelerating voltages above 700 V, have transport mechanisms via localized states for quasi particles. The X-ray photo spectroscopy analysis suggests that accelerating voltages above 700 V enhance the thickness of the barrier, while those below 700 V affect both barrier resistivity and thickness.
Subpicosecond carrier dynamics in low-temperature grown GaAs as measured by time-resolved terahertz spectroscopy (2001)

The transient photoconductivity in a 1 μm layer of low temperature grown GaAs (LT-GaAs) on a GaAs substrate was measured using time-resolved terahertz spectroscopy. When photoexcitation occurs at 400 nm we find a time-dependent mobility that increases from 400±100 to 1100±100 cm2 V−1 s−1 with a time constant of 2 ps. Photoexcitation at 800 nm produces a time-independent mobility of 3000±500 cm2 V−1 s−1. We determine the carrier lifetime in LT-GaAs to be 1.1 ± 0.1 ps.
NUDGE, a Knowledge-based Scheduling Program (1979)

Traditional scheduling algorithms (using the techniques of PERT charts, decision analysis or operations research) require well-defined, quantitative, complete sets of constraints. They are insufficient for scheduling situations where the problem description is ill-defined, involving incomplete, possibly inconsistent and generally qualitative constraints. The NUDGE program uses an extensive knowledge base to debug scheduling requests by supplying typical values for qualitative constraints, supplying missing details and resolving minor inconsistencies. The result is that an informal request is converted to a complete description suitable for a traditional scheduler.

To implement the NUDGE program, a knowledge representation language-FRL-0- based on a few powerful generalizations of the traditional property list representation has been developed. The NUDGE knowledge base defined in FRL-0 consists of a hierarchical set of concepts that provide generic deseriptions of the typical activities, agents, plans and purposes of the domain to be scheduled. Currently, this domain is the management and coordination of personnel engaged in a group project.

NUDGE constitutes an experiment in knowledge-based, rather than power-based AI programs. It also provides an example of an intelligent support system, in which an AI program serves as an aid to a decision maker. Finally, NUDGE has served an experimental vehicle for testing advanced representation techniques.
Elasto-inertial microfluidics for bacteria separation from whole blood for sepsis diagnostics (2017)

We demonstrate separation of bacteria from undiluted while blood using elasto-inertial microfluidics. The label-free, passive bacteria preparation method has a great potential for downstream phenotypic and molecular analysis of bacteria.
A Microstructural Model for the Tensile Constitutive and Failure Behavior of Soft Skeletal Connective Tissues (1998)

We propose a microstructural model for the uniaxial tensile constitutive and failure behavior of soft skeletal connective tissues. The model characterizes the tissues as two-phase composites consisting of collagen fibers embedded in ground substance. Nonlinear toe region behavior in the stress versus strain curve results from the straightening of crimped fibers and from fiber reorientation. Subsequent linear behavior results from fiber stretching affected by fiber volume fraction, collagen type, crosslink density, and fiber orientation. Finally, the tissue fails when fibers successively rupture at their ultimate tensile strain. We apply the model to tendon, meniscus, and articular cartilage. The model provides a consistent approach to modeling the tensile behavior of a wide range of soft skeletal connective tissues.
Piecewise Pre-Equalized Linearization of the Wireless Transmitter With a Doherty Amplifier (2006)

This paper describes a predistorter (PD) based on piecewise pre-equalizers for use in multichannel wideband applications. The predistortion linearizer consists of piecewise pre-equalizers along with a look-up-table-based digital PD that together compensate for nonlinearities, as well as memory effects of power amplifiers (PAs). It takes advantage of multiple finite-impulse-response filters that significantly reduce the complexity when compared to memory polynomial methods. The proposed method was also compared with the conventional Hammerstein structure. A 300-W peak envelope power Doherty PA was first modeled by measured time-based samples in order to verify the adjacent channel power ratio (ACPR) performance in simulation using a multitone and single wideband code-division multiple-access (W-CDMA) carrier. Furthermore, the experimental results applying two W-CDMA carriers verify that the proposed method provided similar improvement to that of the memory polynomial approach. The experimental results verified the complexity reduction and superior ACPR performance over the conventional Hammerstein structure.
HIV Control Is Mediated in Part by CD8 <sup>+</sup> T-Cell Targeting of Specific Epitopes (2014)

Some individuals naturally control HIV replication in the absence of antiretroviral therapy, and this ability to control is strongly correlated with the HLA class I alleles that they express. Here, in a large-scale experimental study, we provide evidence that this correlation is mediated largely by the targeting of specific CD8(+) T-cell epitopes, and we identify eight epitopes that are likely to cause control. In addition, we provide an in silico analysis indicating that control occurs because mutations within these epitopes change the stability of the protein structures. This in silico analysis also identified additional epitopes that are not typically targeted in natural infection but may lead to control when included in a vaccine, provided that other epitopes that would otherwise distract the immune system from targeting them are excluded from the vaccine.
Marketing Hospital Wellness Products to Service Companies (1995)

The authors examine service firm employee attitudes towards wellness programs among twenty-three service companies in three states. Program components that were considered to be most desirable by service industry workers are identified in a regression model. The results indicate that hospital administrators need to adopt a marketing approach during the design phase of employee wellness programs.
NEUROLOGICAL DISEASE IN A CHILD WITH CARNOSINASE DEFICIENCY (1981)

Carnosinase deficiency presented as a progressive neurological problem with sensory polyneuropathy in a 12-year-old male. Carnosinuria was present, even on a meat-free diet, although carnosinemia was not observed. An increased amount of unmetabolized carnosine was found in the urine after a carnosine load. Serum and tissue (liver and nerve) from the patient showed deficient carnosinase activity (Fleisher et al. 1978, 1980). Morphometric and fine structural studies on the nerve and skin biopsies are presented, as is a review of the literature on carnosinase deficiency in mentally retarded patients.
Magnetic Bearings For Precision Linear Slides (1988)

Early uses of scanning tunneling microscopes indicate that many areas of science could greatly benefit if centimeter scale objects could be probed on an atomic scale. This could be accomplished by the development of a linear slide having one Angstrom resolution and a one-tenth meter range of travel. Magnetic suspension technology has been proposed as an ideal candidate for the suspension of thee linear slide. This technology is attractive since it combines low noise, excellent positioning accuracy, zero wear, and requires no lubrication. The paper examines the feasibility of developing a magnetic suspension with a required resolution exceeding one Angstrom and establishes the requirements for this suspension. The achievable resolution is shown to be determined by position measurement accuracy, suspension gain, suspension bandwidth, and disturbance force levels. Expected disturbance force levels from ground motion, air currents, and acoustic effects are projected. Given the expected disturbance force levels, measurement accuracy, and required controller performance, a magnetic suspension could be developed which would provide resolution better than the one Angstrom required.
Anatomical and functional organization of somatosensory areas of the lateral fissure of the New World titi monkey (<i>Callicebus moloch</i>) (2004)

The organization of anterior and lateral somatosensory cortex was investigated in titi monkeys (Callicebus moloch). Multiunit microelectrode recordings were used to identify multiple representations of the body, and anatomical tracer injections were used to reveal connections. (1) Representations of the face were identified in areas 3a, 3b, 1, S2, and the parietal ventral area (PV). In area 3b, the face was represented from chin/lower lip to upper lip and neck/upper face in a rostrocaudal sequence. The representation of the face in area 1 mirrored that of area 3b. Another face representation was located in area 3a. Adjoining face representations in S2 and PV exhibited mirror-image patterns to those of areas 3b and 1. (2) Two representations of the body, the rostral and caudal ventral somatosensory areas (VSr and VSc), were found in the dorsal part of the insula. VSc was roughly a reversal image of the S2 body representation, and VSr was roughly a reversal of PV. (3) Neurons in the insula next to VSr and VSc responded to auditory stimuli or to both auditory and somatosensory stimuli. (4) Injections of tracers within the hand representations in areas 3b, 1, and S2 revealed reciprocal connections between these three areas. Injections in areas 3b and 1 labeled the ventroposterior nucleus, whereas injections in S2 labeled the inferior ventroposterior nucleus. The present study demonstrates features of somatosensory cortex of other monkeys in titi monkeys, while revealing additional features that likely apply to other primates.
Robust 3-D Motion Tracking From Stereo Images: A Model-Less Method (2008)

Traditional vision-based 3-D motion-estimation algorithms require given or calculated 3-D models while the motion is being tracked. We propose a high-speed extended-Kalman-filter-based approach that recovers camera position and orientation from stereo image sequences without prior knowledge, as well as the procedure for the reconstruction of 3-D structures. Empowered by the use of a trifocal tensor, the computation step of 3-D models can be eliminated. The algorithm is thus flexible and can be applied to a wide range of domains. The twist motion model is also adopted to parameterize the 3-D motion. It is minimal since it only has six parameters as opposed to seven parameters in quaternion and 12 parameters in matrix representation. The motion representation is robust because it does not suffer from singularities as Euler angles. Due to the fact that the number of parameters to be estimated is reduced, our algorithm is more efficient, stable, and accurate than traditional approaches. The proposed method has been applied to recover the motion from stereo image sequences taken by a robot and a handheld stereo rig. The results are accurate compared to the ground truths. It is shown in the experiment that our algorithm is not susceptible to outlying point features with the application of a validation gate.
Selectivity estimation using orthogonal series (2003)

Selectivity estimation is an integral part of query optimization. In this paper, we propose a novel approach to approximate data density functions of relations and use them to estimate selectivities. A data density function here is approximated by a partial sum of an orthogonal series. Such approximate density functions can be derived easily, stored efficiently, and maintained dynamically. Experimental results show that our approach yields comparable or better estimation accuracy than the Wavelet and DCT methods, especially in the high dimensional spaces.
Aus der Natur für die Chemie (2009)

Abstract Mit nachwachsenden Rohstoffen lassen sich neue Produkte synthetisieren oder bei bekannten Produkten fossile Rohstoffe ersetzen. Die Katalyse macht viele Produktionswege erst möglich.
Adipose tissue inflammation contributes to short-term high-fat diet-induced hepatic insulin resistance (2013)

High-fat feeding for 3-4 days impairs glucose tolerance and hepatic insulin sensitivity. However, it remains unclear whether the evolving hepatic insulin resistance is due to acute lipid overload or the result of induced adipose tissue inflammation and consequent dysfunctional adipose tissue-liver cross-talk. In the present study, feeding C57Bl6/J mice a fat-enriched diet [high-fat diet (HFD)] for 4 days induced glucose intolerance, hepatic insulin resistance (as assessed by hyperinsulinemic euglycemic clamp studies), and hepatic steatosis as well as adipose tissue inflammation (i.e., TNFα expression) compared with standard chow-fed mice. Adipocyte-specific depletion of the antiapoptotic/anti-inflammatory factor Fas (CD95) attenuated adipose tissue inflammation and improved glucose tolerance as well as hepatic insulin sensitivity without altering the level of hepatic steatosis induced by HFD. In summary, our results identify adipose tissue inflammation and resulting dysfunctional adipose tissue-liver cross-talk as an early event in the development of HFD-induced hepatic insulin resistance.
Many-body Green’s function theory for electron-phonon interactions: The Kadanoff-Baym approach to spectral properties of the Holstein dimer (2015)

We present a Kadanoff-Baym formalism to study time-dependent phenomena for systems of interacting electrons and phonons in the framework of many-body perturbation theory. The formalism takes correctly into account effects of the initial preparation of an equilibrium state and allows for an explicit time-dependence of both the electronic and phononic degrees of freedom. The method is applied to investigate the charge neutral and non-neutral excitation spectra of a homogeneous, two-site, two-electron Holstein model. This is an extension of a previous study of the ground state properties in the Hartree (H), partially self-consistent Born (Gd) and fully self-consistent Born (GD) approximations published in Säkkinen et al. [J. Chem. Phys. 143, 234101 (2015)]. Here, the homogeneous ground state solution is shown to become unstable for a sufficiently strong interaction while a symmetry-broken ground state solution is shown to be stable in the Hartree approximation. Signatures of this instability are observed for the partially self-consistent Born approximation but are not found for the fully self-consistent Born approximation. By understanding the stability properties, we are able to study the linear response regime by calculating the density-density response function by time-propagation. This amounts to a solution of the Bethe-Salpeter equation with a sophisticated kernel. The results indicate that none of the approximations is able to describe the response function during or beyond the bipolaronic crossover for the parameters investigated. Overall, we provide an extensive discussion on when the approximations are valid and how they fail to describe the studied exact properties of the chosen model system.
Cytokine Mediators of Immunity and Inflammation (1993)

The remarkable advances in molecular and cell biology occurring over the past four decades have served the cause of surgical science well. Our understanding of basic disease mechanisms and insights into potential new therapeutic strategies have occurred at a staggering pace. Perhaps nowhere in surgical biology are these mechanistic insights and therapeutic prospects more evident than in research defining the cytokine mediators of inflammation, injury, and repair. These proteins are secreted to some degree by virtually all immune cell types as well as by a diverse array of other nucleated cells, and their functions encompass a regulatory role on and among many components of the immune system. Such intense interest is well deserved because abnormalities or dysregulation of tissue and wound repair as well as of natural (innate) or specific (acquired) immune function underlie much of the morbidity and mortality associated with surgical practice. Indeed, it is evident that the insights gained from the study of such inflammatory mediators cross virtually every specialty of surgery, from the acute sequelae of severe injury and invasive infection to the chronic manifestations of benign and malignant processes.
Gradual removals in cellular PCS with constrained power control and noise (2002)

In this paper we study the mobile removal problem in a cellular PCS network where transmitter powers are constrained and controlled by a distributed constrained power control (DCPC) algorithm. Due to transmitter mobility and random signal propagation, there are system states where not all transmitters can be supported, even under the optimal power control. Thus, some of them should be removed. It can be shown that finding the optimal removal set is an NP-complete problem, and therefore gives rise to heuristic algorithms. In this paper we study and compare among three classes of transmitter removal algorithms, one-by-one removals, multiple removals and power control with removals combined. All removal algorithms are compared with respect to their outage probabilities and their time to convergence to a steady state. The power control with removals combined algorithm emerges as the best approach with respect to both criteria.