gebhart/patrepeval huggingface dataset:
Stereocomplex formation between enantiomeric poly(lactic acid)s. 3. Calorimetric studies on blend films cast from dilute solution (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereocomplex formation between enantiomeric poly(lactic acid)s. 3. Calorimetric studies on blend films cast from dilute solutionHideto Tsuji, Suong Hyu Hyon, and Yoshito IkadaCite this: Macromolecules 1991, 24, 20, 5651–5656Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://pubs.acs.org/doi/10.1021/ma00020a026https://doi.org/10.1021/ma00020a026research-articleACS PublicationsRequest reuse permissionsArticle Views1782Altmetric-Citations310LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
To randomize or not to randomize (2006)

Personalized PageRank expresses link-based page quality around user selected pages. The only previous personalized PageRank algorithm that can serve on-line queries for an unrestricted choice of pages on large graphs is our Monte Carlo algorithm [WAW 2004]. In this paper we achieve unrestricted personalization by combining rounding and randomized sketching techniques in the dynamic programming algorithm of Jeh and Widom [WWW 2003]. We evaluate the precision of approximation experimentally on large scale real-world data and find significant improvement over previous results. As a key theoretical contribution we show that our algorithms use an optimal amount of space by also improving earlier asymptotic worst-case lower bounds. Our lower bounds and algorithms apply to the SimRank as well; of independent interest is the reduction of the SimRank computation to personalized PageRank.
Combined DRAM and logic chip for massively parallel systems (2002)

A new 5 V 0.8 /spl mu/m CMOS technology merges 100 K custom circuits and 4.5 Mb DRAM onto a single die that supports both high density memory and significant computing logic. One of the first chips built with this technology implements a unique Processor-In-Memory (PIM) computer architecture termed EXECUBE and has 8 separate 25 MHz CPU macros and 16 separate 32 K/spl times/9 b DRAM macros on a single die. These macros are organized together to provide a single part type for scaleable massively parallel processing applications, particularly embedded ones where minimal glue logic is desired. Each chip delivers 50 Mips of performance at 2.7 W. This paper overviews the basic chip technology and organization some projections on the future of EXECUBE-like PIM chips, and finally some lessons to be learned as to why this technology should radically affect the way we ought think about computer architecture.
Fundamentals of Investments (1989)

Part 1 The investment environment: buying and selling securities security models the determination of security prices taxes inflation. Part 2 Modern portfolio theory: the portfolio selection problem efficient sets risk-free lending and borrowing the capital asset pricing model factor models arbitrage pricing theory. Part 3 Common stocks: characteristics of common stocks financial analysis of common stocks dividend discount models dividends and earnings investment management portfolio performance evaluation. Part 4 Fixed-income securities: types of fixed-income securities fundamentals of bond valuation bond analysis bond portfolio management. Part 5 Alternative investments: investment companies options futures extended diversification.
Ku Selectively Transfers between DNA Molecules with Homologous Ends (1997)

Double strand break repair and V(D)J recombination in mammalian cells require the function of the Ku protein complex and the DNA-dependent protein kinase. The DNA-dependent protein kinase is targeted to DNA through its interaction with the Ku protein complex, and thus the specificity of template recognition in the repair and recombination reactions depend on Ku. We have studied Ku binding to DNA using competitive gel shift analysis. We find that Ku bound to one DNA molecule can transfer directly to another DNA molecule when the two DNA molecules have homologous ends containing a minimum of four matched bases. This remarkable reaction can give a false impression of sequence specificity of Ku DNA binding under certain assay conditions. A model is proposed for the DNA binding function of Ku on the basis of these results and the discovery of a novel type of DNA-Ku complex formed at high Ku/DNA ratios is discussed.
Studies on some newer polyhydrazides containing amide linkages. III (1984)

Abstract Novel polyhydrazides having inherent viscosities in the range of 0.24–0.38 dL g −1 were prepared by polymerizing a series of hydrazides with different diacid chlorides in polar aprotic solvents. These polymers display a wide range of solubility in a number of solvents. They start decomposing at about 200°C in air. Results of differential thermal and thermogravimetric analysis show that a steep weight loss takes place mainly in the range of 300–440°C.
Ciprofloxacin resistance in coagulase-positive and -negative staphylococci: role of mutations at serine 84 in the DNA gyrase A protein of Staphylococcus aureus and Staphylococcus epidermidis (1991)

gyrA mutations in quinolone-resistant pathogenic isolates of Staphylococcus spp. have been detected by the direct HinfI digestion of polymerase chain reaction products. Homology among gyrA genes allowed rapid examination of both coagulase-positive and -negative isolates. DNA sequence analysis revealed that ciprofloxacin resistance in Staphylococcus epidermidis is associated with a novel Ser-84----Phe mutation in the DNA gyrase A protein, analogous to Ser-84----Leu changes observed in Staphylococcus aureus.
Derivatives of functionalized fluoro esters and fluoro ketones. New fluoromonomer syntheses (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDerivatives of functionalized fluoro esters and fluoro ketones. New fluoromonomer synthesesCarl G. KrespanCite this: J. Org. Chem. 1986, 51, 3, 326–332Publication Date (Print):February 1, 1986Publication History Published online1 May 2002Published inissue 1 February 1986https://pubs.acs.org/doi/10.1021/jo00353a010https://doi.org/10.1021/jo00353a010research-articleACS PublicationsRequest reuse permissionsArticle Views621Altmetric-Citations26LEARN 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
A wide-band phase-locked loop using harmonic cancellation (1969)

A technique which extends the capture range of a phase-locked loop by cancelling the phase sum terms from the loop error signal is described. The use of multiple phase comparators and phase-shift networks is shown to eliminate the need for a loop filter. A digital phase-locked loop is used as a vehicle for demonstrating the application of the technique.
Mass Transport of GaN and Reduction of Threading Dislocations (2000)

Mass transport of patterned GaN at around 1100°C in nitrogen with an ammonia atmosphere has been discovered for the first time. The mass transport process is found to be affected by the anisotropy of surface energy of GaN. Behaviors of threading dislocations which are predominantly of the mixed type and the pure edge type are affected by the anisotropy during mass transport. Mixed type dislocations are bent keeping the geometrical relationship normal to the surfaces, while pure edge type dislocations are bent horizontally. This new-found process, the so-called "mass transport epitaxy," is one of the best methods for achieving low dislocation density GaN on the highly lattice-mismatched substrate.
High-speed high-efficiency large-area resonant cavity enhanced p-i-n photodiodes for multimode fiber communications (2001)

We report AlGaAs-GaAs p-i-n photodiodes with a 3-dB bandwidth in excess of 10 GHz for devices as large as 60-μm diameter. Resonant cavity enhanced photodetection is employed to improve quantum efficiency, resulting in more than 90% peak quantum efficiency at 850 nm.
Using UML class diagrams for a comparative analysis of relational, object-oriented, and object-relational database mappings (2003)

This paper illustrates the manner in which UML can be used to study mappings to different types of database systems. After introducing UML through a comparison to the EER model, UML diagrams are used to teach different approaches for mapping conceptual designs to the relational model. As we cover object-oriented and object-relational database systems, different features of UML are used over the same enterprise example to help students understand mapping alternatives for each model. Students are required to compare and contrast the mappings in each model as part of the learning process. For object-oriented and object-relational database systems, we address mappings to the ODMG and SQL99 standards in addition to specific commercial implementations.
Improved device performance and reliability in high /spl kappa/ HfTaTiO gate dielectric with TaN gate electrode (2005)

The device performance and reliability of higher-/spl kappa/ HfTaTiO gate dielectrics have been investigated in this letter. HfTaTiO dielectrics have been reported to have a high-/spl kappa/ value of 56 and acceptable barrier height relative to Si (1.0 eV). Through process optimization, an ultrathin equivalent oxide thickness (EOT) (/spl sim/9 /spl Aring/) has been achieved. HfTaTiO nMOSFET characteristics have been studied as well. The peak mobility of HfTaTiO is 50% higher than that of HfO/sub 2/ and its high field mobility is comparable to that of HfSiON with an intentionally grown SiO/sub 2/ interface, indicative of superior quality of the interface and bulk dielectric. In addition, HfTaTiO dielectric has a reduced stress-induced leakage current (SILC) and improved breakdown voltage compared to HfO/sub 2/ dielectric.
GIP2, a Putative Transcription Factor That Regulates the Aurofusarin Biosynthetic Gene Cluster in <i>Gibberella zeae</i> (2006)

Gibberella zeae (anamorph: Fusarium graminearum) is an important pathogen of maize, wheat, and rice. Colonies of G. zeae produce yellow-to-tan mycelia with the white-to-carmine red margins. In this study, we focused on nine putative open reading frames (ORFs) closely linked to PKS12 and GIP1, which are required for aurofusarin biosynthesis in G. zeae. Among them is an ORF designated GIP2 (for Gibberella zeae pigment gene 2), which encodes a putative protein of 398 amino acids that carries a Zn(II)2Cys6 binuclear cluster DNA-binding domain commonly found in transcription factors of yeasts and filamentous fungi. Targeted gene deletion and complementation analyses confirmed that GIP2 is required for aurofusarin biosynthesis. Expression of GIP2 in carrot medium correlated with aurofusarin production by G. zeae and was restricted to vegetative mycelia. Inactivation of the 10 contiguous genes in the DeltaGIP2 strain delineates an aurofusarin biosynthetic gene cluster. Overexpression of GIP2 in both the DeltaGIP2 and the wild-type strains increases aurofusarin production and reduces mycelial growth. Thus, GIP2 is a putative positive regulator of the aurofusarin biosynthetic gene cluster, and aurofusarin production is negatively correlated with vegetative growth by G. zeae.
Being in (2002)

Abstract Something is said to be in a place, and so its place is one of the things in which it is. If x is in y, then y contains x. Something may contain something else either derivatively, or in its own right. I am in the universe derivatively, because there is something else in which I am, namely the air, such that anything in the air is in the universe, but not vice versa. The air is one of my broad places. There is a place in which I am, such that I am the only thing in that place: this is my proper place. There are many different ways of being in something: containment is only one of them, but it is the central way in which something is in something else.
Case 30-2014 (2014)

A 29-year-old man was seen in the walk-in clinic because of diarrhea of 1 year's duration and weight loss. Initial laboratory values included elevated hepatic aminotransferase levels and a ferritin level of 1716 ng per milliliter. A diagnostic procedure was performed.
A zoo of strange attractors from the canonical Chua's circuits (2003)

By adding a linear resistor R/sub 0/ in Chua's circuit, an immensely richer bifurcation landscape can be obtained, including an endowment of more than 20 new distinct strange attractors which were suppressed when R/sub 0/ to 0. The author interprets this augmented circuit as a global unfolding of Chua's circuit because its basic mechanism is similar to the local unfolding theory in nonlinear mathematics. This augmented Chua's circuit, which has only seven parameters, is canonical in the sense that it is capable of duplicating all qualitative behaviors of a 21-parameter family C of ordinary differential equations in R/sup 3/. Explicit formulas are given for calculating the seven circuit parameters of the augmented Chua's circuit so that it is topologically conjugate to any member of this 21-parameter family of third-order piecewise-linear circuits; namely, the Chua's circuit family. A gallery of selected strange attractors from this canonical circuit is presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Some Current Problems and new Dimensions of Polymeric Biomaterials for Blood-Contacting Applications (1978)

The biological performance of both impervious and porous polymeric coatings is profoundly influenced by substrate effects. “Antithrombogenic” behavior and lack of acute toxicological response are not necessarily indicative of blood compatibility or long-term tolerability in the physiological environment. Biomaterials should be tested whenever possible with donated human blood by in vitro and ex vivo procedures to augment in vivo evaluations in animals whose blood closely resembles humans. Such biological evaluation of candidate biomaterials should precede in vivo animal experiments with devices since otherwise it may be impossible to judge the relative performance of one material over another, leading to problems in establishing the causes of failure of medical devices and separating design parameters from the effects of biomaterials. An important area that is still not fully appreciated in cardiovascular applications involves the need to match the mechanical properties of tissues with anisotropic synthetic biomaterials. Several smooth-surfaced biomaterials have performed well in various flexing cardiovascular assist devices with a high degree of patient survival who otherwise may have died, and these are preferred over so-called “flocked” surfaces consisting of randomly oriented, tiny polyester microfibers embedded into polymeric substrates. “Flocked” surfaces are not to be confused with textured” surfaces and “biolized” materials. Intrinsic semiconduction and electronic conduction (as distinct from extrinsic conduction and ionic conduction) may play an important role in blood compatibility. Adsorption studies with single proteins while valuable, are not necessarily representative of the dynamic in vivo physiological events that influence the long-term biological performance of biomaterials.
Thickness of Carotid Artery Atherosclerotic Plaque and Ischemic Risk (1990)

Abstract Noninvasive duplex scanning of carotid artery atherosclerotic plaque was performed in 286 consecutive patients referred to a cerebrovascular diagnostic laboratory. The presence and thickness of such plaque in the region of the carotid bifurcation were examined for association with the degree of vessel stenosis, age, sex, smoking history, history of prior transient ischemic attack or stroke, and systemic manifestations of atherosclerotic disease. Atherosclerotic plaque thickness was positively correlated with degree of vessel stenosis (P&lt; 0.0001). Both parameters were independent predictors of cerebrovascular events but plaque thickness was a better predictor of prior transient ischemic attacks (P&lt;0.05), and vessel stenosis was a better predictor of prior stroke (P&lt;0.005). Patient age (P&lt;0.001) and pack-years of cigarette use (P&lt;0.001) were independent positive predictors of carotid atherosclerotic plaque thickness. The greatest effect of smoking and atherosclerotic plaque thickness was seen in heavy smokers younger than age 55. Both carotid artery plaque thickness and pack-years of smoking were significant independent predictors of other systemic manifestations of atherosclerotic disease (P&lt;0.05). Such noninvasive scanning of carotid artery atherosclerotic plaque demonstrates the significant role of age and smoking in the progression of disease. It also suggests a significant role for carotid atherosclerotic artery plaque in the pathophysiology of cerebrovascular events, especially transient ischemic attacks, even prior to the production of a flow-limiting stenosis. Finally, noninvasive screening of carotid artery plaque may provide a useful marker for the patient at risk for systemic atherosclerotic disease and identify the patient for whom maximal atherosclerotic risk factor modification is needed.
Single-frequency, polarized ytterbium-doped fiber MOPA source with 264 W output power (2004)

A single-frequency, single-mode, plane-polarized ytterbium-doped all-fiber master-oscillator – power amplifier source at 1060nm generated 264W of cw output power (pump-power limited) The final-stage amplifier operated with a high gain of 19dB and a high conversion efficiency of 68%.
Bonding Structure of the Cross-link in Organosilicate Films Using O<sub>2</sub>/BTMSM Precursors (2003)

This paper describes a chemical bonding structure of organosilicate films. Organosilicate films were deposited on a p-type Si(100) substrate by inductively coupled plasma chemical vapor deposition (ICPCVD) with rf power of 13.56 MHz. The deposition was performed as a function of O2/BTMSM flow rate ratio with a total of 20 sccm. Thereafter, the annealing process was performed at 300°C, 400°C and 500°C in a vacuum. The characteristic analyses of organosilicate films were performed by scanning electron microscopy and X-ray photoelectron spectroscopy (XPS). Organosilicate films in the flow rate ratio of O2/BTMSM = 1.5 formed a bond structure of organometallic carbon, which was confirmed by XPS. The characteristics of the organometallic carbon were attributed to a cross-link structure. The dielectric constant of organosilicate films was reduced due to the increase in the carbon concentration. The relative carbon concentration increased due to the vaporization of the H2O. Therefore, the dielectric constant of annealed films was smaller than that of as-deposited films.
Detection of biomarkers with graphene nanoplatelets and nanoribbons (2014)

Well-defined graphene nanosheets have become increasingly popular in the electrochemical detection and quantification of small molecules. In this work, the electrochemical oxidation of biomarkers such as uric acid, ascorbic acid, dopamine, NADH and DNA bases, namely guanine and adenine, was performed using cyclic voltammetry and differential pulse voltammetry to compare the electrochemical properties of electrochemically reduced nanoplatelets (ENPs) and electrochemically reduced nanoribbons (ENRs). The graphene materials displayed better electrochemical performances than the bare glassy carbon surface. Between the two graphene materials, the oxidation of biomarkers occurred at lower oxidation potentials on the ENP surface. The sensitivities of the two graphene surfaces varied when different biomarkers were studied. The ENP surface showed enhanced sensitivities for ascorbic acid, while the ENR surface exhibited higher sensitivities for uric acid and dopamine. As for the DNA bases analysed, both guanine and adenine were oxidised at lower potentials on the ENP surface than the ENR surface. The ENP surface displayed a better sensitivity for guanine, whereas the oxidation of adenine was more sensitive on the ENR surface.
Boosting Throughput and Efficiency of Hardware Spiking Neural Accelerators Using Time Compression Supporting Multiple Spike Codes (2020)

Spiking neural networks (SNNs) are the third generation of neural networks and can explore both rate and temporal coding for energy-efficient event-driven computation. However, the decision accuracy of existing SNN designs is contingent upon processing a large number of spikes over a long period. Nevertheless, the switching power of SNN hardware accelerators is proportional to the number of spikes processed while the length of spike trains limits throughput and static power efficiency. This paper presents the first study on developing temporal compression to significantly boost throughput and reduce energy dissipation of digital hardware SNN accelerators while being applicable to multiple spike codes. The proposed compression architectures consist of low-cost input spike compression units, novel input-and-output-weighted spiking neurons, and reconfigurable time constant scaling to support large and flexible time compression ratios. Our compression architectures can be transparently applied to any given pre-designed SNNs employing either rate or temporal codes while incurring minimal modification of the neural models, learning algorithms, and hardware design. Using spiking speech and image recognition datasets, we demonstrate the feasibility of supporting large time compression ratios of up to 16×, delivering up to 15.93×, 13.88×, and 86.21× improvements in throughput, energy dissipation, the tradeoffs between hardware area, runtime, energy, and classification accuracy, respectively based on different spike codes on a Xilinx Zynq-7000 FPGA. These results are achieved while incurring little extra hardware overhead.