gebhart/patrepeval huggingface dataset:
Monolithically integrated quantum-confined stark effect tuned laser with uniform frequency modulation response (1998)

Conventional tunable semiconductor lasers tuned by the carrier induced effect suffer from intrinsically nonuniform optical frequency modulation (FM) response due to the associated thermal effect. Electric field effect tuned lasers involving no current injection, offer intrinsically uniform FM response. We report here the first quantum-confined Stark effect tuned two-section ridge waveguide laser fabricated by postgrowth band gap engineering techniques. An highly uniform FM response, within /spl plusmn/3 dB from 30 kHz to 6 GHz, is achieved, independent of laser output power, the widest and most uniform response yet reported for a field effect tuned laser. The residual intensity modulation is less than 5% for 4.5-GHz peak frequency deviation.
Compression properties of polyvinyl alcohol – bacterial cellulose nanocomposite (2009)

Despite the established use of total joint replacement for the treatment of advanced degeneration of articular cartilage, component loosening due to wear and osteolysis limits the lifespan of these joint prostheses. In the present study, nanocomposites consisting of poly(vinyl alcohol) (PVA) and bacterial cellulose (BC) nanofibers were investigated as possible improved cartilage replacement materials. Nanocomposites were synthesized by adding small amounts (<1%) of BC to PVA, and subjecting the mixture to thermal cycling. The mechanical properties of the resulting material were evaluated using unconfined compression testing. By the addition of BC nanofibers to the PVA matrix, a nanocomposite with a wide range of compressive mechanical properties control was obtained, with elastic modulus values similar to those reported for native articular cartilage. The nanocomposite also showed improved strain-rate dependence and adequate viscoelastic properties. The PVA-BC nanocomposite is therefore a promising biomaterial to be considered as a possible replacement material for localized articular cartilage injuries and other orthopedic applications such as intervertebral discs.
Block-Based TVAR Models for Single-Channel Blind Dereverberation of Speech from a Moving Speaker (2007)

In reverberant environments, a moving speaker yields a dynamically changing source-sensor geometry giving rise to a spatially-varying acoustic impulse response (AIR) between the source and sensor. Consequently, this leads to a time-varying convolutional relationship between the source signal and the observations and thus spectral colouration of the received signal. It is therefore desirable to reduce the effect of reverberation. In this paper, a model-based approach is proposed for single-channel blind dereverberation of speech from a moving speaker acquired in an acoustic environment. The sound source is modelled by a block-based time-varying AR (TVAR) process, and the channel by a linear time-varying all-pole filter. In each case, the AR parameters are represented as a linear combination of known basis functions with unknown weightings. The speech model captures local nonstationarity while taking account of the global nonstationary characteristics inherent in long segments of speech. As an initial step towards single-channel blind dereverberation of real speech signals, this paper presents simulation results for synthetic data to demonstrate the algorithm developed.
TC1(C8orf4) Correlates with Wnt/β-Catenin Target Genes and Aggressive Biological Behavior in Gastric Cancer (2006)

Our data suggests that TC1 coordinates the up-regulation of Wnt/beta-catenin target genes that are implicated in the aggressive biological behavior of cancers. The strong clinical relevance, even in patients with lymph node metastasis, suggested that TC1 could be a potential therapeutic target of advanced gastric cancers.
Endocardial excision: a new surgical technique for the treatment of recurrent ventricular tachycardia. (1979)

Twelve patients with medically refractory ventricular tachycardia secondary to ischemic heart disease underwent surgery for cure of their arrhythmia. Preoperatively, the tachycardia could be reproducibly initiated and terminated in each patient by programmed stimulation. In all instances, intraoperative mapping localized the tachycardia to the border of the aneurysm, a site not routinely resected during aneurysmectomy. In nine instances, the area of origin involved the septum. During bypass the tachycardia could still be induced after standard aneurysmectomy or ventriculotomy in 11 of 12 patients. On the basis of intraoperative mapping, resection of endocardium in the area of origin (25--40% the circumference of the aneurysmectomy) up to normal muscle was performed. In one patient without a discrete aneurysm, endocardial excision alone through a ventriculotomy was performed. There was one operative death due to cardiogenic shock (preoperative ejection fraction 5%) and one late death due to rupture of a mycotic aneurysm in the pulmonary artery. Before discharge, all patients underwent a repeat relectrophysiologic study off antiarrhythmic agents and in none could ventricular tachycardia be initiated. Hemodynamic and angiographic catheterization showed improved hemodynamics and ejection fractions in all. The 10 survivors remained free of sustained ventricular tachycardia for 9--20 months, with one late nonarrhythmic death.
An Improved Integral Method for Predictionof Distorted Inlet Flow Propagation in Axial Compressor (2005)

An improved integral method is proposed and developed for the quantitative prediction of distorted inlet flow propagation through axial compressor. The novel integral method is formulated using more appropriate and practical airfoil characteristics, with less assumptions needed for derivation. The results indicate that the original integral method (Kim et al., 1996) underestimated the propagation of inlet flow distortion. The effects of inlet flow parameters on the propagation of inlet distortions as well as on the compressor performance and characteristic are simulated and analyzed. From the viewpoint of compressor efficiency, the propagation of inlet flow distortion is further described using a compressor critical performance and its associated critical characteristic. The results present a realistic physical insight to an axial‐flow compressor behavior with a propagation of inlet distortion.
Instrumentation: Adaptive Optics (2000)

Turbulence in the Earth's atmosphere produces inhomogeneities in the refractive index of the air, which affect the image quality of ground-based telescopes (see SEEING). ADAPTIVE OPTICS (AO) is a means for the real-time compensation of image degradation. It consists of using an active optical element such as a deformable mirror to correct the instantaneous wave-front distortions
Efficient logo retrieval through hashing shape context descriptors (2010)

In this paper we present a method for organizing and indexing logo digital libraries like the ones of the patent and trademark offices. We propose an efficient queried-by-example retrieval system which is able to retrieve logos by similarity from large databases of logo images. Logos are compactly described by a variant of the shape context descriptor. These descriptors are then indexed by a locality-sensitive hashing data structure aiming to perform approximate k-NN search in high dimensional spaces in sub-linear time. The experiments demonstrate the effectiveness and efficiency of this system on realistic datasets as the Tobacco-800 logo database.
Standardization of Quantitative Imaging: The Time Is Right, and <sup>18</sup>F-FDG PET/CT Is a Good Place to Start (2011)

Enhanced techniques have made quantitative medical imaging increasingly important to clinical research ( [1][1], [2][2]). Performance expectations, and particularly the rigor with which performance is statistically characterized, are high in the research context. Even though individual factors may
Phoneme-Based Self Hearing Assessment on a Smartphone (2013)

Phonemes provide an interesting alternative to pure tones in hearing tests.We propose a new smartphone-based method for self-hearing assessment using the four Korean phonemes which are similar to the English phonemes /a/, /i/, /sh/, and /s/. We conducted tests on 15 subjects diagnosed with mild to severe hearing loss and estimated their conventional pure-tone hearing thresholds from their phoneme hearing thresholds using regression analysis. The phoneme-based self-hearing assessment was found to be sufficiently reliable in estimating the hearing thresholds of hearing impaired subjects. The difference between the hearing thresholds obtained through conventional pure-tone audiometry and those obtained using our method was 5.6 dB HL on average. The proposed hearing assessment was able to significantly reduce the mean test time compared to conventional pure-tone audiometry.
Rhodium Nanoflowers Stabilized by a Nitrogen‐Rich PEG‐Tagged Substrate as Recyclable Catalyst for the Stereoselective Hydrosilylation of Internal Alkynes (2014)

Abstract Morphology and size controllable rhodium nanoparticles stabilized by a nitrogen‐rich polyoxyethylenated derivative have been prepared by reduction of RhCl 3 with NaBH 4 in water at room temperature and fully characterized. The flower‐like Rh NPs are effective and recyclable catalysts for the stereoselective hydrosilylation of challenging internal alkynes and diynes, affording the ( E )‐vinylsilanes in quantitative yields for a wide range of substrates. The insolubility of the nanocatalyst in diethyl ether allows its easy separation and recycling. magnified image
The Many Kinds of Creepware Used for Interpersonal Attacks (2020)

Technology increasingly facilitates interpersonal attacks such as stalking, abuse, and other forms of harassment. While prior studies have examined the ecosystem of software designed for stalking, there exists an unstudied, larger landscape of apps-what we call creepware-used for interpersonal attacks. In this paper, we initiate a study of creepware using access to a dataset detailing the mobile apps installed on over 50 million Android devices. We develop a new algorithm, CreepRank, that uses the principle of guilt by association to help surface previously unknown examples of creepware, which we then characterize through a combination of quantitative and qualitative methods. We discovered apps used for harassment, impersonation, fraud, information theft, concealment, and even apps that purport to defend victims against such threats. As a result of our work, the Google Play Store has already removed hundreds of apps for policy violations. More broadly, our findings and techniques improve understanding of the creepware ecosystem, and will inform future efforts that aim to mitigate interpersonal attacks.
Results of Sauve-kapandji procedure. (2002)

Sauve-Kapandji procedure is recommended in young patients with distal radioulnar joint disorder.
Extremum seeking control based integration of MPPT and degradation detection for photovoltaic arrays (2010)

Regarding the reduction of the cost of energy (COE) for photovoltaic (PV) systems, two important issues are maximizing the efficiency of power generation and fault diagnosis. This study presents an integrated framework that achieves both maximum power point tracking (MPPT) control and diagnosis of change in internal resistance simultaneously. An extremum seeking control (ESC) strategy is developed to maximize the power output of the PV array by regulating the voltage input to the DC-DC converter. Simulation results show that the ESC can achieve MPPT with periodic dither signals such as sinusoidal or square-wave signals. The degraded PV cells often demonstrate certain change of internal resistance, i.e. increase in the series resistance and decrease in the shunt resistance. The change of these internal resistances can induce the change of transient behavior of the dithered output remarkably for square wave dithering, which is validated with simulation study. The ESC with square-wave dithering can thus provides the dual benefits of MPPT and degradation detection simultaneously. Furthermore, simulation study on the PV modules under partial shading, though the P-V characteristic has changed, the proposed option is to pick the optimal regions to narrow down the ESC searching intervals and thus can locate the global maximum power point faster.
6-Acetylmethylenepenicillanic acid (Ro 15-1903), a potent .BETA.-lactamase inhibitor. I. Inhibition of chromosomally and R-factor-mediated .BETA.-lactamases. (1982)

6-Acetylmethylenepenicillanic acid (Ro 15-1903) was seen to be a powerful inhibitor of various beta-lactamases. Nearly all of the chromosomally and R-factor-mediated beta-lactamases which were studied were inhibited at much lower concentrations than required with clavulanic acid or sulbactam. Ro 15-1903 protected beta-lactamase-labile penicillins and cephalosporins from hydrolysis. The compound itself was stable against hydrolysis and inhibition of beta-lactamase was irreversible.
The Sensitivity of Topic Coherence Evaluation to Topic Cardinality (2016)

©2016 Association for Computational Linguistics. When evaluating the quality of topics generated by a topic model, the convention is to score topic coherence - either manually or automatically - using the top-N topic words. This hyper-parameter N, or the cardinality of the topic, is often overlooked and selected arbitrarily. In this paper, we investigate the impact of this cardinality hyper-parameter on topic coherence evaluation. For two automatic topic coherence methodologies, we observe that the correlation with human ratings decreases systematically as the cardinality increases. More interestingly, we find that performance can be improved if the system scores and human ratings are aggregated over several topic cardinalities before computing the correlation. In contrast to the standard practice of using a fixed value of N (e.g. N = 5 or N = 10), our results suggest that calculating topic coherence over several different cardinalities and averaging results in a substantially more stable and robust evaluation. We release the code and the datasets used in this research, for reproducibility.1
Shear Orientation of Nanoparticle Arrays Templated in a Thermoreversible Block Copolymer Micellar Crystal (2007)

The shear alignment of binary crystals of polymeric micelles and small particles is demonstrated using contrast-variation SANS experiments. The larger micelles form close-packed crystals that serve as a template to the smaller nanosized particles. The simultaneous alignment of the two phases, micelles and templated particles (silica or albumin proteins), is demonstrated from the scattering at two different contrast values. A new method to quantify the alignment of colloidal crystals using diffraction is also proposed. This method is used to probe the alignment of the crystals as a function of shear rate. It is found that the binary crystals align at significantly lower shear rates when compared to the neat micelle crystals. The diffraction profiles of the cocrystals are compared to models for the flow mechanism of colloidal crystals. Differences between the experimental profiles and the predictions suggest that there is a coexisting crystal phase that is not accounted for in the model.
Extracellular Signal-regulated Kinase Regulates Clathrin-independent Endosomal Trafficking (2005)

Extracellular signal-regulated kinase (Erk) is widely recognized for its central role in cell proliferation and motility. Although previous work has shown that Erk is localized at endosomal compartments, no role for Erk in regulating endosomal trafficking has been demonstrated. Here, we report that Erk signaling regulates trafficking through the clathrin-independent, ADP-ribosylation factor 6 (Arf6) GTPase-regulated endosomal pathway. Inactivation of Erk induced by a variety of methods leads to a dramatic expansion of the Arf6 endosomal recycling compartment, and intracellular accumulation of cargo, such as class I major histocompatibility complex, within the expanded endosome. Treatment of cells with the mitogen-activated protein kinase kinase (MEK) inhibitor U0126 reduces surface expression of MHCI without affecting its rate of endocytosis, suggesting that inactivation of Erk perturbs recycling. Furthermore, under conditions where Erk activity is inhibited, a large cohort of Erk, MEK, and the Erk scaffold kinase suppressor of Ras 1 accumulates at the Arf6 recycling compartment. The requirement for Erk was highly specific for this endocytic pathway, because its inhibition had no effect on trafficking of cargo of the classical clathrin-dependent pathway. These studies reveal a previously unappreciated link of Erk signaling to organelle dynamics and endosomal trafficking.
Fabrication and Water Treatment Application of Carbon Nanotubes (CNTs)-Based Composite Membranes: A Review (2017)

Membrane separation technology is widely explored for various applications, such as water desalination and wastewater treatment, which can alleviate the global issue of fresh water scarcity. Specifically, carbon nanotubes (CNTs)-based composite membranes are increasingly of interest due to the combined merits of CNTs and membrane separation, offering enhanced membrane properties. This article first briefly discusses fabrication and growth mechanisms, characterization and functionalization techniques of CNTs, and then reviews the fabrication methods for CNTs-based composite membranes in detail. The applications of CNTs-based composite membranes in water treatment are comprehensively reviewed, including seawater or brine desalination, oil-water separation, removal of heavy metal ions and emerging pollutants as well as membrane separation coupled with assistant techniques. Furthermore, the future direction and perspective for CNTs-based composite membranes are also briefly outlined.
Data-flow based vulnerability analysis and java bytecode (2007)

Abstract:- The security of information systems has been the focus because of network applications. Vulnerability analysis is widely used to evaluate the security of a system to assure system security. With the help of vulnerability analysis, the security risk of a system can be predicted so that the countermeasures are arranged in advance. These will promote system security effectively. The object of vulnerability analysis is to find out the unknown security holes in a system. It could be helpful to understand the characteristics of security holes and to assess the security risk of a system. Data-flow based analysis shows its predominance in vulnerability analysis because the vulnerability is data-flow dependent. The paper discusses how to use data-flow analysis in vulnerability analysis. The way to apply data-flow analysis in Java bytecode vulnerability analyzing is presented. Key-Words:- program analysis, vulnerability, Java bytecode, data-flow analysis
Applying future industrialised processes to construction (2007)

Construction has traditionally relied on specifications and 2D drawings to\nconvey material properties, performance details and location information.\nAdvanced 3D solid modelling and digital fabrication methods are growing in\nconstruction. Iconic building design is driving the industry towards a new\nera of the Building Information Model (BIM) where a building is modelled\nentirely using 3D solid CAD tools containing all the required information for\nconstruction. CNC machinery can utilise this information to manufacture\ncomponents enabling highly bespoke and non-repeating components to be\ncost competitive. Rapid Manufacturing machines also use this information\nto build components by selectively adding material rather than the\ntraditional subtractive or formative processes. The BIM drives current\nmachines for the production of models for inspection or to explore\nassembly issues. Recent developments are scaling up these processes so\nthat whole building components can be built using a mega scale, additive\nmachine. This paper explores some of the issues relating to the design of\nbuilding components and discusses issues on the implementation of these\nprocess.
Flexible Manipulation of OPS Network Topologies with Optical Packet Flow Cut-Through in OPCI Networks (2018)

We propose YANG models and the control-plane architecture for an optical packet and circuit integrated network. This enables operators to manipulate the OPS network topologies meeting different requirements. We demonstrate the dynamic control of the OPS topology manipulation.
Posttranscriptional Modification of the Central Loop of Domain V in Escherichia coli 23 S Ribosomal RNA (1995)

Knowledge of the sites, structures, and functional roles of posttranscriptional modification in rRNAs is limited, despite steadily accumulating evidence that rRNA plays a direct role in the peptidyl transferase reaction and that modified nucleotides are concentrated at the functional center of the ribosome. Using methods based on mass spectrometry, modifications have been mapped in Escherichia coli 23 S rRNA in the central loop of domain V, a region of established interaction between 23 S RNA and tRNA. Two segments of RNA were isolated following protection with oligodeoxynucleotides and nuclease digestion: residues 2423-2473 (51-mer) and 2481-2519 (39-mer). Dihydrouridine was located at position 2449, within the RNase T1 hydrolysis product 2448-ADAACAGp-2454, as evidenced by a molecular mass 2 daltons higher than the gene sequence-predicted mass. This nucleoside, which is nearly ubiquitous in tRNA (where it is involved in maintenance of loop structure), is two bases from A-2551, a previously determined site of interaction between 23 S RNA and the CCA-aminoacyl terminus of tRNA at the ribosomal P-site. The oligonucleotide 2496-CACmCUCGp-2502 was isolated and accurately mass measured, and its nucleoside constituents were characterized by high performance liquid chromatography-mass spectrometry; there was no evidence of modification at position 2501 as implied by earlier work. Using similar techniques, the modified adenosine at position 2503 was unambiguously determined to be 2-methyladenosine in the fragment 2503-m2A psi Gp-2505.
On Transceiver Beamformer Design for Multi-Source Multi-Destination Wireless Networks (2011)

In this paper, we consider the problem of designing transceiver beamforming vectors for multi-source multi-destination (MSMD) wireless networks such that the transmission power of each source is minimized while the signal-to-interference plus noise ratio (SINR) requirements of all source-destination pairs are satisfied. We propose an efficient iterative algorithm to design the transceiver beamforming vectors and address the convergence of the algorithm. We determine a necessary condition as well as a sufficient condition for the algorithm to converge to a generalized Nash equilibrium solution. Especially, if each destination has only one antenna, we obtain a necessary and sufficient condition for the algorithm to converge to a unique generalized Nash equilibrium solution. Simulation results show that the proposed iterative algorithm has higher probability of convergence compared to an iterative waterfilling (IWF) approach. For example, for a system with three source-destination pairs and SINR requirement of 2dB, the probability of convergence is 84% with the proposed algorithm while it is only 66% with the IWF algorithm.