gebhart/patrepeval huggingface dataset:
Local visual words coding for low bit rate mobile visual search (2012)

Mobile visual search has attracted extensive attention for its huge potential for numerous applications. Research on this topic has been focused on two schemes: sending query images, and sending compact descriptors extracted on mobile phones. The first scheme requires about 30-40KB data to transmit, while the second can reduce the bit rate by 10 times. In this paper, we propose a third scheme for extremely low bit rate mobile visual search, which sends compressed visual words consisting of vocabulary tree histogram and descriptor orientations rather than descriptors. This scheme can further reduce the bit rate with few extra computational costs on the client. Specifically, we store a vocabulary tree and extract visual descriptors on the mobile client. A light-weight pre-retrieval is performed to obtain the visited leaf nodes in the vocabulary tree. The orientation of each local descriptor and the tree histogram are then encoded to be transmitted to server. Our new scheme transmits less than 1KB data, which reduces the bit rate in the second scheme by 3 times, and obtains about 30% improvement in terms of search accuracy over the traditional Bag-of-Words baseline. The time cost is only 1.5 secs on the client and 240 msecs on the server.
Fitness Landscapes Arising from the Sequence-Structure Maps of Biopolymers (1997)

Fitness landscapes are an important concept in molecular evolution since evolutionary adaptation as well as in vitro selection of biomolecules can be viewed as a hill-climbing-like process. Global features of landscapes can be described by statistical measures such as correlation functions or the fraction of neutral (equally fit) neighbors. Simple spin-glass-like landscape models borrowed from statistical physics lend themselves to detailed mathematical analysis but lack several basic features of natural landscapes. Biologically relevant landscape models are based on the assumption that genotypes give rise to phenotypes that are evaluated by their environment and hence determine the genotype&apos;s fitness. In the case of in vitro evolution of biopolymers the phenotypes are the three dimensional shapes of the molecules. A large degree of neutrality, giving rise to neutral networks and shape space covering, is a generic feature of RNA and polypeptide sequence-structure maps. These properties...
On V-regular Semigroups (2010)

A regular semigroup S is V-regular if V (ab) ⊆ V (b)V (a) for all a,b ∈ S. A characterization of a V-regular semigroup is given. Congruences on V-regular semigroups are described in terms of certain congruence pairs.
CooLMUC-2: A supercomputing cluster with heat recovery for adsorption cooling (2017)

In High Performance Computing (HPC), chiller-less cooling has replaced mechanical chiller supported cooling for a significant part of the HPC system resulting in lower cooling costs. Still, other IT components and IT systems remain that require air or cold water cooling. This work introduces CooLMUC-2, a high-temperature direct-liquid cooled (HT-DLC) HPC system which uses a heat-recovery scheme to drive an adsorption refrigeration process. Using an adsorption chiller is at least two times more efficient than a mechanical chiller for producing needed cold water. To this date this is the only installation of adsorption chillers in a data center combining a Top500 production level HPC system with adsorption refrigeration. This prototype installation is one more step towards a 100% mechanical chiller-free data center. After optimization of the operational parameters of the system, the adsorption chillers of CooLMUC-2 consume just over 6kW of electrical power to not only remove 95kW of heat from the supercomputer, but also to produce more than 50kW of cold water. This paper presents initial measurements characterizing the heat-recovery performance of CooLMUC-2 at different operating conditions.
Repair of Full-Thickness Cartilage Defects in Rabbit Knees With Free Periosteal Graft Preincubated With Transforming Growth Factor (2003)

This study compared different concentrations of transforming growth factor-beta 1 (TGF-beta1) used for short-term preincubation in vitro of large periosteal explants to determine the effect of chondrogenesis and the fate of repair cartilage over time. Eighty-two rabbits were divided into four groups: group A, non-grafted; group B, non-incubated grafted; group C, 100 ng/mL recombinant human (rh) TGF-beta1 preincubated grafted; and group D, 20 ng/mL rhTGF-beta1 preincubated grafted. Rabbits from each group were sacrificed at intervals between 2 and 24 weeks. Histologic slides were stained with safranin O and were scored based on a subjective scoring system. Group A healed with non-cartilaginous material. Group B healed with hyaline cartilage-like material with progressive thinning of this regenerated layer; at 24 weeks, this layer was fibrous tissue. Group C enhanced repair with hyaline cartilage-like material but accelerated early degeneration and osteophyte formation; the cartilage became fibrous tissue at 24 weeks. Group D did not enhance cartilaginous repair. At 24 weeks, all groups had the same result. The 100 ng/mL rhTGF-beta1 preincubation in vitro with periosteum enhanced early osteochondral repair but did not show prolonged durability. Clinical application of this growth factor necessitates further study.
Low-Loss Photonic Reservoir Computing with Multimode Photonic Integrated Circuits (2018)

We present a numerical study of a passive integrated photonics reservoir computing platform based on multimodal Y-junctions. We propose a novel design of this junction where the level of adiabaticity is carefully tailored to capture the radiation loss in higher-order modes, while at the same time providing additional mode mixing that increases the richness of the reservoir dynamics. With this design, we report an overall average combination efficiency of 61% compared to the standard 50% for the single-mode case. We demonstrate that with this design, much more power is able to reach the distant nodes of the reservoir, leading to increased scaling prospects. We use the example of a header recognition task to confirm that such a reservoir can be used for bit-level processing tasks. The design itself is CMOS-compatible and can be fabricated through the known standard fabrication procedures.
Inductance calculation and layout optimization for planar spiral inductors (2012)

The inductance calculation and the layout optimization for spiral inductors still are research topics of actuality and very interesting especially in radio frequency integrated circuits. Our research work is fixed on the vast topics of this research area. In this effect we create a software program dedicate to dc inductance calculation and to layout optimization for spiral inductors. We use a wide range of inductors in the application made with our program; we compare our applications results with measurements results existing in the literature and with three-dimensional commercial field solver results in order to validate it. Our program is accurate enough, has a very friendly interface, is very easy to use and its running time is very sort compared with other similar programs. Since spiral inductors tolerance is generally on the order of several percent, a more accurate program is not needed in practice. The program is very useful for the spiral inductor design because it calculates the inductance of spiral inductors with a very good accuracy and also for the spiral inductor optimization, because it optimize the spiral inductor layouts in terms of technological restrictions and/or in terms of the designers' needs.
Manufacture of Low-Soda Alumina from Clay (1996)

The manufacture of low-soda alumina from clay was studied with a major concern in morphological changes during thermal decomposition of the aluminum chloride hexahydrate (AlCl3·6H2O) derived from clay and calcination of the resultant amorphous alumina. The temperature was varied from 300 to 900 °C for decomposition and from 1100 to 1400 °C for calcination. Changes in the BET surface area, porosity, and scanning electron microscopic image of the powder surface were observed under the varying conditions of decomposition and calcination. These transitional behaviors then were compared with those of aluminum hydroxide, which has long been used for the commercial production of alumina. A low-soda alumina could be made directly by the thermal decomposition of aluminum chloride hexahydrate derived from clay, whereas an extra step is required to reduce the sodium content with the Bayer process.
Programmable multi-gain current amplifier (2012)

A novel multi-output current amplifier exhibiting independent electronically controllable gains is proposed. The new device provides a cost-efficient and low-power solution to filter designs. While multi-output devices are often employed to reduce active components within the filters, the proposed device conserves the independent tuning characteristics. Current-mode two-integrator-loop filter topologies are considered as the demonstrating examples. The experimental results obtained from a 0.18 µm complementary metal oxide semiconductor (CMOS) process are provided.
Characterization of Human Lung Tumor-Associated Fibroblasts and Their Ability to Modulate the Activation of Tumor-Associated T Cells (2007)

The tumor microenvironment of human non-small cell lung cancer (NSCLC) is composed largely of stromal cells, including fibroblasts, yet these cells have been the focus of few studies. In this study, we established stromal cell cultures from primary NSCLC through isolation of adherent cells. Characterization of these cells by flow cytometry demonstrated a population which expressed a human fibroblast-specific 112-kDa surface molecule, Thy1, alpha-smooth muscle actin, and fibroblast activation protein, but failed to express CD45 and CD11b, a phenotype consistent with that of an activated myofibroblast. A subset of the tumor-associated fibroblasts (TAF) was found to express B7H1 (PD-L1) and B7DC (PD-L2) constitutively, and this expression was up-regulated by IFN-gamma. Production of cytokines and chemokines, including IFN-gamma, monokine induced by IFN-gamma, IFN-gamma-inducible protein-10, RANTES, and TGF-beta1 was also demonstrated in these cells. Together, these characteristics provide multiple opportunities for the TAF to influence cellular interactions within the tumor microenvironment. To evaluate the ability of TAF to modulate tumor-associated T cell (TAT) activation, we conducted coculture experiments between autologous TAF and TAT. In five of eight tumors, TAF elicited a contact-dependent enhancement of TAT activation, even in the presence of a TGF-beta1-mediated suppressive effect. In the three other tumors, TAF had a net suppressive effect upon TAT activation, and, in one of these cases, blockade of B7H1 or B7DC was able to completely abrogate the TAF-mediated suppression. We conclude that TAF in human NSCLC are functionally and phenotypically heterogeneous and provide multiple complex regulatory signals that have the potential to enhance or suppress TAT function in the tumor microenvironment.
Effect of Radio-Frequency Radiation (RFR) and Diazoluminomelanin (DALM) on the Growth Potential of Bacilli (1993)

DALM, which is thought to generate increased levels of free radicals in response to RFR, was synthesized in situ by Bacillus anthracis. Bacilli grown under DALM-producing conditions showed significantly lower plate counts in response to circularly polarized 2450 MHz RFR (100W/Kg) with exposures as short as 30 min. Bacilli grown on media for 3 days prior to irradiation demonstrated lower colony counts than 1 day old cultures under DALM-producing and nonproducing conditions. No significant RFR effects were observed for endospore preparations of bacilli grown in the absence of DALM substrates. Thus, DALM appears to function as a microwave-sensitive antibiotic which may operate through a free radical-mediated mechanism. Additionally, DALM-laden bacteria have demonstrated temperature-dependent 'slow fluorescence,' supporting the hypothesis that DALM toxicity is mediated by free radicals and suggesting that DALM may be of utility in the area of molecular electronics. Radiofrequency Radiation Effects, Bacterial Viability, Slow Fluorescence, Molecular Electronics
Cytogenomics of cancers: From chromosome to sequence (2010)

The role of acquired chromosomal rearrangements in oncogenesis (cytogenomics) and tumor progression is now well established. These alterations are multiple and diverse and the products of these rearranged genes play an essential role in the transformation and growth of cancer cells. The validity of this assumption is demonstrated by the development of specific inhibitors or antibodies that eliminate tumoral cells by targeting some of these changes. Imatinib, an inhibitor of the tyrosine kinase ABL, the prototype of these targeting drugs, is yielding complete remissions in most CML patients. Knowledge of chromosomal abnormalities is becoming an essential contribution to the diagnosis and prognosis of cancers but also for monitoring minimal residual disease or relapse. The concept of the "cytogenetic uniqueness" of each cancer has resulted in personalized treatment. This investigation will expound upon, besides the recurrent genomic alterations, the numerous products of perverted Darwinian selection at the cellular level.
Fundamental Tribological and Removal Rate Studies of Inter-Layer Dielectric Chemical Mechanical Planarization (2003)

In this work, real-time coefficient of friction (COF) analysis, in conjunction with a new method for approximating the Sommerfeld Number, is used to determine the extent of normal and shear forces during chemical mechanical planarization (CMP) and to help identify the tribology of the system. A new parameter termed the `tribological mechanism indicator' is defined and extracted from the resulting Stribeck curves. The information on COF, `tribological mechanism indicator' and inter-layer dielectric (ILD) removal rate results in a series of `universal' correlations to help identify polishing conditions for optimized pad life and removal rate. Results further show that abrasive concentration, surface texture and pad grooving dramatically shift the tribology of the system from boundary lubrication to partial lubrication. Trends are explained using several models based on area of contact between wafer and abrasive particles, the extent of lubricity of the system and the compliance of the pad in micro- and macro-scales.
Multivariate controllers for LQG self-tuning applications with coloured measurement noise and dynamic cost weighting (1986)

A solution of the generalized LQG stochastic optimal multi variable control problem is obtained using a polynomial-matrix-systems approach. The generalized problem involves a dual performance index including the usual error and control weighting terms and also sensitivity and complementary sensitivity weighting matrices. The system model includes input disturbance, reference and coloured measurement noise signals. The cost-function weighting operators can also represent dynamical systems. The problem description was motivated by the need to construct multi-variable explicit self-tuning controllers for marine applications.
Collision processes of C2,3Hy and C2,3Hy+ hydrocarbons with electrons and protons (2004)

Cross sections and rate coefficients are provided for inelastic collision processes of electrons and protons with CxHy and CxHy+ (x=2,3; 1⩽y⩽2x+2) hydrocarbon species in a wide range of collision energies and plasma (gas) temperatures. The considered processes include electron-impact ionization and dissociation of CxHy, dissociative excitation, ionization and recombination of CxHy+ with electrons, and both charge transfer and atom exchange in proton channels are considered separately. The presented cross sections are based upon a critical assessment of available experimental data and upon an extensive use of a number of semi-empirical, physically well grounded cross section scaling relationships. Information is also provided for the energetics of each individual reaction channel. The cross sections and rate coefficients are presented in compact analytic forms.
ChemInform Abstract: Probing Bond Activation Reactions with Femtosecond Infrared (2001)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Safety aspects of oral antifungal agents. (1990)

Four main targets have to be considered when evaluating the safety of new systemically acting, oral antifungals: the liver, the endocrine system, serum cholesterol and the developing embryo. The major endocrine targets for high levels of the antifungal azoles are the adrenal cortex and the gonads. Endocrine studies demonstrate that itraconazole has little potential for interfering with steroid hormones in man. Available data also indicate that itraconazole has low predictable hepatotoxicity potential in man. In rats, serum cholesterol levels are raised during treatment with itraconazole, especially after chronic exposure. This is, however, a species-specific phenomenon which leads to secondary events at toxic doses, especially in long-term toxicity studies. In man, including patients with existing hypercholesterolaemia, serum cholesterol levels are not raised. Ketoconazole has been shown to be teratogenic at high, toxic doses in pregnant rats. The same observation has been made for itraconazole, and it may also be true for fluconazole. However, all three azoles show no teratogenicity in the rabbit. Studies with itraconazole in adrenalectomised rats and in rats given exogenous arachidonic acid indicate that adrenal effects occurring at toxic dose levels are important mediators of teratogenicity. Since itraconazole does not affect adrenal function at levels used to treat infections in man, the teratogenic risk is estimated to be low. Itraconazole is therefore a promising new drug, especially with regard to the assessment of its safety in the liver and endocrine system. Moreover, it is more potent and has a broader antifungal spectrum than other azole antifungals, and its development is considered to be an important step forward in chemotherapy.
A protocol for the delivery of cannabidiol (CBD) and combined CBD and ∆9-tetrahydrocannabinol (THC) by vaporisation (2014)

Current Controlled Trials ISRCTN24109245.
Very low-emittance solar selective surfaces using new film structures (1992)

New cermet film structures suitable for selective solar absorbers, composed of two cermet sublayers with identical metal volume fractions in each sublayer, on metal reflectors with an antireflection dielectric layer coating are described. The absorbing cermet sublayers have thickness and volume fractions such that solar radiation is absorbed internally and by phase cancellation interference. They are substantially transparent in the thermal infrared region. Modeling of the new cermet layer structures has revealed a number of different selective surfaces, involving a variety of practical cermet materials, with better performance than recent published results. For example, the best predicted ratio of absorptance to normal emittance α/ε at room temperature is 46 for a Cu-SiO2 cermet, 49 for a Cu-Al2O3 cermet and a Au-Al2O3 cermet. The best laboratory results of α/ε at room temperature thus far are 46 for a Cu-SiO2 cermet, and 45 for a Au-Al2O3 cermet. From computer modeling, using published experimental dielectric functions of a Co-Al2O3 cermet, absorptance of 0.93 and normal emittance of 0.026 at 50 °C (α/ε=36) could be obtained for a two-cermet-sublayer film on a Mo reflector with an Al2O3 antireflection layer.
0.89 mW on-chip jitter-measurement circuit for high speed clock with sub-picosecond resolution (2016)

This paper demonstrates an all digital fully on-chip jitter measurement circuit with sub-picosecond resolution that can be used with or without an external reference. The circuit is integrated on a CMOS chip and outputs a digital code proportional to the jitter of high speed clock signals. It achieves low error while consuming less than 0.89 mW by using a low-speed stochastic under-sampler to approximate high speed sampling. Test chips were fabricated in a 65 nm CMOS process with an active area of 0.015 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . The absolute jitter and period jitter of a 6 GHz test clock were measured with root mean square error of 0.102 ps and 0.308 ps, respectively.
18F-FDG PET detection of colonic adenomas. (2001)

Increased glucose metabolism is observed in colonic adenomas, and detectability with PET increases with the increase in adenoma size. Adenomas are premalignant lesions, and it is important to realize that colonic adenomas may be found incidentally during an FDG PET study.
p-Cycles: An overview (2010)

One of the most promising techniques of network protection i.e. <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">p</i> -Cycles (pre-planned, preconfigured-cycles) is reviewed in this paper. In this paper we provide a survey of the main work on <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">p</i> -cycles to date. The characteristics of <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">p</i> -cycles and various types of protection provided by them are discussed. Finally, some possible extensions or enhancements of the <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">p</i> -cycle concept are discussed.
Synthesis and properties of tetrahydrofuran complexes of chromium(III). [Cr(THF)3X3] (X = Cl, Br, I), [Cr(THF)2X4]- (X = Cl, Br, I, NCS), and "[Cr(THF)6](BF4)3" (1983)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and properties of tetrahydrofuran complexes of chromium(III). [Cr(THF)3X3] (X = Cl, Br, I), [Cr(THF)2X4]- (X = Cl, Br, I, NCS), and "[Cr(THF)6](BF4)3"Peter J. Jones, Annette L. Hale, William Levason, and Francis P. McCullough Jr.Cite this: Inorg. Chem. 1983, 22, 18, 2642–2644Publication Date (Print):August 1, 1983Publication History Published online1 May 2002Published inissue 1 August 1983https://pubs.acs.org/doi/10.1021/ic00160a036https://doi.org/10.1021/ic00160a036research-articleACS PublicationsRequest reuse permissionsArticle Views586Altmetric-Citations16LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts