gebhart/patrepeval huggingface dataset:
Cognitive mobility management in heterogeneous networks (2010)

The heterogeneity depicted by wireless networks and spectrum availability in emergent technologies means that mobility management has got to deal with unconventional changes in operational environment by cognising the changes and adapting accordingly. Although a considerable amount of research on mobility management for heterogeneous networks has been done, mobility management for cognitive radio wireless networks, including the spectrum aware mobility support remains largely unexplored. In this article, the concept of a cognitive interface network is raised and an underlying cognition cycle together with the high level functional architecture are presented to support seamless internetworking in heterogeneous environments. Integration with the media independent handover framework of the IEEE 802.21 standard is taken as a use case to further describe the functioning of the proposed framework where network resources usage is optimized and user's quality of experience is enhanced through cognitive interfacing.
Economy and NO Emission Potential of an SI Variable R/L Engine (1985)

<div class="htmlview paragraph">A theoretical analysis of the spark ignition VR/LE engine with the variable crank-radius to connecting-rod-length ratio R/L is presented. The studies have been performed with the help of the thermodynamic-type model (zero-dimensional) including NO formation submodel. The analysis have made it possible to determine the changes of some basic output engine parameters: thermal efficiency, work and NO concentration, as a result of the engine thermodynamic cycle variations which, in turn, result from the external regulation of the phase shift of the function R/L = f(φ), where φ is the crank angle. A comparison between the VR/LE and conventional engines is presented. The ranges of the phase angle which can give the gain in efficiency and NO emission reduction are also determined. The analysis has confirmed that the VR/LE engine concept has remarkable economy potential with application to the S1 engines and it is worth performing a research with an actual engine.</div>
The effects of substrate composition on thick film circuit reliability (1979)

Measurements of the density of, and the ripening of RuO2 in, thick film glasses as a function of temperature and amount of ALSiMag 614 (96% AL2O3) substrate dissolved in the glasses were conducted. The minor constituents (4%) in the substrate were found to have an anomalously large effect on the density. The ripening results were interpreted in terms of a phase boundary reaction rate limiting step, and the transfer coefficient was calculated from the data. A theoretical equation was derived for the initial stage sintering kinetics of RuO2 in the glass. This equation was combined with the results of the ripening study to predict the neck growth between RuO2 particles as a function of temperature and amount of dissolved substrate. (Author)
Reconstruction of the action potential of ventricular myocardial fibres (1977)

1. A mathematical model of membrane action potentials of mammalian ventricular myocardial fibres is described. The reconstruction model is based as closely as possible on ionic currents which have been measured by the voltage‐clamp method. 2. Four individual components of ionic current were formulated mathematically in terms of Hodgkin—Huxley type equations. The model incorporates two voltage‐ and time‐dependent inward currents, the excitatory inward sodium current, i Na , and a secondary or slow inward current, i s , primarily carried by calcium ions. A time‐independent outward potassium current, i K 1 , exhibiting inward‐going rectification, and a voltage‐ and time‐dependent outward current, i x 1 , primarily carried by potassium ions, are further elements of the model. 3. The i Na is primarily responsible for the rapid upstroke of the action potential, while the other current components determine the configuration of the plateau of the action potential and the re‐polarization phase. The relative importance of inactivation of i s and of activation of i x 1 for termination of the plateau is evaluated by the model. 4. Experimental phenomena like slow recovery of the sodium system from inactivation, frequency dependence of the action potential duration, all‐or‐nothing re‐polarization, membrane oscillations are adequately described by the model. 5. Possible inadequacies and shortcomings of the model are discussed.
Photochemistry of Pyrazino- and Quinoxalino-fused Naphthobarrelenes (2001)

Irradiation of the title compounds afforded the corresponding semibullvalenes via aza-di-π-methane rearrangement.No naphtho-vinyl bridged products were observed.Barrelenes undergo facile photoisomerizations to the corresponding cyclooctatetraenes or semibullvalenes based on the irradiation conditions. 1,2It has been established that cyclooctatetraenes are formed under direct irradiation through a singlet-state pathway involving [2+2] cycloaddition, whereas semibullvalenes are formed upon triplet sensitization through di-π-methane rearrangement (Zimmerman rearrangement). 2In our earlier papers, [3][4][5][6] we reported the photochemistry of pyrazino-, benzopyrazino-, quinoxalino-and benzoquinoxalinobarrelenes.Most of these heteroaromatic barrelenes underwent predominantly aza-di-π-methane (ADPM) rearrangement (heteroaromatic-vinyl bridging) rather than di-π-methane (DPM) rearrangement (vinyl-vinyl bridging or benzo-vinyl bridging).There exists always competition between vinyl-vinyl bridging or benzo-vinyl bridging and heteroaromatic-vinyl bridging i.e.DPM rearrangement and ADPM rearrangement.However, benzopyrazino-4 and benzoquinoxalinobarrelenes 5 afforded ADPM rearrangement products as the sole or the predominant products based on the substitutions on the heteroaromatic ring.In continuation, we carried out the photochemistry of naphthopyrazino-and naphthoquinoxalinobarrelenes (1a,b) and (2a-c) with the main aim of examining the competing aptitude of naphthalene and heteroaromatic rings intramolecularly.The propyl groups in compounds (1a,b) and (2a-c) were designed to be at the bridgehead positions in order to distinguish the possible modes of rearrangement.We herein, report the synthesis and photochemical rearrangement of pyrazino-and quinoxalino-fused naphthobarrelenes (1a,b) and (2a-c).Pr Pr Pr Naphthopyrazinobarrelene (1a) was synthesized by the condensation of α-diketone (3) 3,7 with ethylenediamine followed by the oxidation with DDQ in 55% yield, whereas naphthobarrelenes (1b) and (2a-c)
QWIP-LED/CCD Coupling Study (2000)

Many space-based imaging applications demand a sensitive, low noise long wavelength IR detector which is able to image a wide field of view in a short time. Quantum Well Infrared Photodetector (QWIP)-LED detectors offer the potential for large imaging area, and ultra-low noise operation when cooled to cryogenic temperatures (approx. 30K). Due to these factors the QWIP-LED holds a significant advantage over conventional detectors. It is in the area of system efficiency, however, that current QWIP-LEDs are less competitive for low signal space applications. This study was a collaborative effort between EMS technologies, DND, CRESTech and NRC with a goal to design and implement a method to increase the efficiency of QWIP-LED systems. As a result of this study, it has become apparent that early projections about the cost, quality, and efficiency of pixelless QWIP-LED technology were highly optimistic regarding critical implementation details. Unforeseen difficulties with the application of standard' LED and grating technologies to a non-standard device severely impacted the predicted efficiency for both absorption and emission. EMS' research into the IR detector market allowed realistic comparisons to be made for expected applications and showed that, in the near term and at the current rate of development, the QWIP-LED would not be an easily manufacturable competitive alternative due to cryogenic cooling requirements, unexplained material defects, and overall low efficiency. The competing QWIP-multiplexer which is now commercially available would have identical noise and cooling specifications with much higher efficiency at a comparable cost. Uncooled bolometric detectors would compete favourably for high signal terrestrial and earth-observing markets while at the high performance end, more efficient thin film HgCdTe detectors can now cover most wavebands of interest with much higher efficiency, thus out-competing QWIP-LED for space applications.
胰岛素样生长因子-1和血小板源性生长因子-α对人类脂肪源性基质细胞成骨分化的调节作用 (2011)

背景人类脂肪源性基质细胞有巨大的用于组织工程的潜能。作者的实验室致力于研究人类脂肪源性基质细胞对骨骼组织的再生作用，并识别那些可增强人类脂肪源性基质细胞成骨性分化的因子。作者假设胰岛素样生长因子（insulin-like growth factor，IGF）和血小板源性生长因子（platelet-derived growth factor，PDGF）可以刺激人类脂肪源性基质细胞骨生成，且IGF可刺激脂肪形成。方法从人脂肪抽吸组织中获取脂肪源性基质细胞，首先，采用微阵列分析法检测成骨性分化过程中的基因表达。获取标本中添加重组体IGF-1和PDGF-α的方式是：分别单独添加，二者联合添加。利用碱性磷酸酶、茜素红、油红O进行染色，并利用定量实时多聚酶链式反应（RUNX2，ALP，OCN，IGFl，PPARG，LPL，AP2，and GCP1）评估骨生成和脂肪形成。最后，评估IGF和PDGF信号途径的交叉点。结果所有标记物均可观察到IGF-1可增加成骨性分化作用（P〈0．01）。然而，初始时单独加入PDGF-α并不能影响骨生成标记物。PDG-α可上调IGF-1的转录活性。PDGF-α与IGF-1联合添加或在添加IGF-1前添加PDGF-α对骨生成的增加作用均大于单独加入任一种因子。IGF-1可增加人类脂肪源性基质细胞的脂肪生成，而PDGF-α的作用相反。结论IGF信号可显著增强人类脂肪源性基质细胞的骨生成，可以在组织工程中使用。PDGF和IGF联合使用对脂肪源性基质细胞骨生成的促进作用强于单独使用任一种。未来的体内应用将关注脂肪源性基质细胞，仿生支架和重组体IGF的结合。
COMPARISON OF VISUAL ASSESSMENT AND POLYMERASE CHAIN REACTION ASSAY TESTING TO ESTIMATE THE INCIDENCE OF THE HUANGLONGBING PATHOGEN IN COMMERCIAL FLORIDA CITRUS (2006)

Huanglongbing (HLB = citrus greening) is one of the most serious diseases of citrus worldwide. The disease is caused by species of bacteria in the genus Candidatus Liberi- bacter and was discovered for the first time in the United States in Florida in August, 2005. To date, the Asian form of HLB, caused by Candidatus Liberibacter asiaticus, is the only form of HLB that has been found in Florida. Molecular detec- tion protocols are available for the detection of HLB but due to the uneven distribution of the bacterium in trees, the serolog- ical variability of the pathogen, and perceived limitations of testing methodology, molecular testing generally has been limited to the confirmation of visible infections and not for de- tection of infections in non-symptomatic plants. In this study, visual surveys were compared to the testing of trees with a real-time polymerase chain reaction-based assay (real-time PCR). The incidence of infection based on real-time PCR test- ing may be up to two times the incidence of infection estimat- ed by visible symptoms alone.
Characterization and Bioactivity of Polysaccharides Obtained from Pine Cones of Pinus koraiensis by Graded Ethanol Precipitation (2013)

Pinus koraiensis polysaccharides (PKP) were extracted by hot water from P. koraiensis pine cones. Five polysaccharide fractions named PKP-A, PKP-B, PKP-C, PKP-D and PKP-E were successfully separated at final ethanol concentrations of 30%, 50%, 60%, 70% and 80%, respectively. HPLC, FT-IR, GC-MS and automatic amino-acid analysis were applied to investigate their chemical characteristics. Monosaccharide component analysis indicated that the five fractions were all composed of D-ribose, L-rhamnose, L-arabinose, D-xylose, D-mannose, D-glucose and D-galactose, but their molar ratios were quite different. HPLC results revealed that the polysaccharides precipitated by higher concentrations of ethanol solution had lower molecular masses. Moreover, the antioxidant activities of the five fractions were studied on the basis of hydroxyl radical and ABTS radical scavenging tests. The five graded polysaccharide fractions exhibited good inhibitory power, and MTT tests in vitro showed the IC50 of PKP-A and PKP-E were 1,072.5 and 2,070.0 μg · mL-1, respectively. These results demonstrated that the PKP could be a potential source of natural antioxidants or dietary supplements.
Will GnRH antagonists provide new hope for patients considered `difficult responders' to GnRH agonist protocols? (1999)

We have assessed the use of cetrorelix, a gonadotrophin releasing hormone (GnRH) antagonist, in conjunction with clomiphene citrate and gonadotrophin in 31 in-vitro fertilization (IVF)/gamete intra-Fallopian transfer (GIFT) cycles for 25 difficult responders. Group I included 18 poor responders (24 cycles) with no live birth in 23 previous IVF cycles with GnRH agonists. Group II included seven patients (seven cycles) with polycystic ovaries. Thirteen previous IVF/GIFT cycles with GnRH agonists had resulted in one live birth and three of these patients had developed ovarian hyperstimulation syndrome (OHSS). The treatment protocol involved a daily dose of clomiphene citrate 100 mg for 5 days and gonadotrophin injections from cycle day 2. Cetrorelix 0.25 mg/day was started when the leading follicle reached 14 mm. The outcome in both groups was favourable compared to previous treatment with GnRH agonists. In group I the abandoned cycle rate was 29 versus 57% (P = 0.06). More oocytes were produced (6.4 versus 4.7 oocytes/cycle) at a lower dose of follicle-stimulating hormone (FSH) (709 versus 1163 IU/oocyte; P = 0.08) and two live births resulted (11.8%). In group II fewer oocytes were produced (10.2 versus 14.5 oocytes/cycle), using a lower dose of gonadotrophin (170 versus 189 IU/oocyte) and resulted in one ongoing pregnancy. No patients experienced OHSS. This report is preliminary and a further controlled randomized study is required.
Conductive EMI reduction in DC-DC converters by using the randomized PWM (2005)

In this paper, a comparative investigation on use of different random modulation schemes against the normal pulse width modulation (PWM) for the dc motor drive with step-down chopper (buck) and with half-bridge configuration is presented. For that purpose one experimental setup with DSP2 board has been developed. The board consists of the signal processor TMS320C32 which is suitable for verifying the different modulations strategies. The effectiveness of randomization on spreading the dominating frequencies that normally exist in constant-frequency PWM schemes is evaluated by the power spectral density (PSD) estimations in the low-frequency range. Finally, one universal demo board with both power converters configuration (driven by the micro controller PICF16F876) has been used in EMI measurements to comply with the CISPR 25 (or EN 55025) regulative.
A basic derivative of dextran and its interaction with serum albumin (1960)

Research Article| July 01 1960 A basic derivative of dextran and its interaction with serum albumin W. M. McKernan; W. M. McKernan 1Medical Research Council Industrial Injuries and Burns Research Unit, Birmingham Accident Hospital Search for other works by this author on: This Site PubMed Google Scholar C. R. Ricketts C. R. Ricketts 1Medical Research Council Industrial Injuries and Burns Research Unit, Birmingham Accident Hospital Search for other works by this author on: This Site PubMed Google Scholar Author and article information Publisher: Portland Press Ltd © 1960 CAMBRIDGE UNIVERSITY PRESS1960 Biochem J (1960) 76 (1): 117–120. https://doi.org/10.1042/bj0760117 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Cite Icon Cite Get Permissions Citation W. M. McKernan, C. R. Ricketts; A basic derivative of dextran and its interaction with serum albumin. Biochem J 1 July 1960; 76 (1): 117–120. doi: https://doi.org/10.1042/bj0760117 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Journal Search Advanced Search This content is only available as a PDF. © 1960 CAMBRIDGE UNIVERSITY PRESS1960 Article PDF first page preview Close Modal You do not currently have access to this content.
Multiple Hypergeometric Functions: Probabilistic Interpretations and Statistical Uses (1983)

Abstract This article reviews and interprets recent mathematics of special functions, with emphasis on integral representations of multiple hypergeometric functions. B.C. Carlson's centrally important parameterized functions R and ℛ, initially defined as Dirichlet averages, are expressed as probability-generating functions of mixed multinomial distributions. Various nested families generalizing the Dirichlet distributions are developed for Bayesian inference in multinomial sampling and contingency tables. In the case of many-way tables, this motivates a new generalization of the function ℛ. These distributions are also useful for the modeling of populations of personal probabilities evolving under the process of inference from statistical data. A remarkable new integral identity is adapted from Carlson to represent the moments of quadratic forms under multivariate normal and, more generally, elliptically contoured distributions. This permits the computation of such moments by simple quadrature.
Variable Terahertz Attenuator Integrated on Nonradiative Guide Using Photoinduced Carriers (2020)

A terahertz variable attenuator integrated on a nonradiative guide controlled by externally induced photoconductivity is proposed. Our device is constructed using high-resistivity silicon as a dielectric channel of the waveguide sandwiched between parallel conducting plates. By irradiating an excitation light to the side surface of the channel, photoinduced carriers are generated involving attenuation for terahertz waves propagating through the channel. We experimentally demonstrate attenuation of 0.50 dB/cm/mW at 300 GHz. The use of the nonradiative guide simplifies the light irradiation scheme and contributes to integrate other functions such as bending, filtering, splitting, and combining without radiation losses. We also discuss its unique frequency dependence, in which the attenuation increases as the frequency decreases.
Favorable Prognosis of Chronic Hepatitis C After Interferon Therapy by Long–Term Cohort Study (2003)

The prognosis of patients with chronic hepatitis C after interferon (IFN) therapy is still poorly defined. The present study evaluated the effect of IFN therapy on survival in a cohort of such patients. The study included 459 patients with biopsy-proven C-viral chronic liver disease who were followed for 8.2 +/- 2.9 years (range, 7-183 months). Survival status was examined by medical records or direct questionnaires. Fifteen (14%) of 104 IFN-untreated patients and 33 (9%) of 355 patients treated with IFN died during follow-up. Among the treated patients, 4 (3%) of 116 with sustained virologic response and 29 (12%) of 239 without sustained virologic response died. Liver-related death was shown in 32 (67%) patients, and hepatocellular carcinoma (HCC) caused 25 (52%) of the 48 deaths. Multivariate Cox proportional regression analysis revealed that IFN treatment decreased the risk ratio for overall death to 0.521 (confidence interval [CI]: 0.263-1.034) and for liver-related death to 0.208 (CI: 0.088-0.495) compared with untreated patients, and sustained virologic response showed a decrease in the risk ratio for overall death to 0.219 (CI: 0.068-0.710) and for liver-related death to 0.030 (CI: 0.003-0.267). IFN treatment showed no association with liver-unrelated death. Furthermore, the standardized mortality ratios for all causes of death and liver-related death were reduced in IFN-treated patients compared with untreated patients (1.4 vs. 2.0 for total death and 7.9 vs. 19.7 for liver-related death). In conclusion, the present data suggest that IFN therapy has a long-term clinical benefit for patients with chronic hepatitis C patients by reducing liver-related death, especially in patients with sustained virologic response.
Mixed behavior-logic simulation in a hardware accelerator (2002)

A mixed-mode hardware simulator that combines logic and behavioral model evaluation capabilities without the addition of a coprocessor or any hardware is described. This simulator is implemented in the MARS (microprogrammable accelerator for rapid simulation) multicomputer system. The MARS hardware simulator is a mixed-mode logic-behavior-memory simulator applicable to the design of both custom and semicustom integrated circuits. It is particularly suited for the simulation of ASICs (application specific integrated circuits). The major benefit of this simulator is the reduced element count compared to simulators that make use of four-input primitives. Most of the reduction is due to flip-flops, buffers and high-speed combinational elements. The evaluation time per element will be increased by 20-50%, depending on the element type. However, the total simulation time will be shorter because of the reduced element count. Race analysis, setup, and hold time violations can be detected by monitoring the clock and data inputs during simulation and postprocessing the simulation results.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Hardcopy to online publication-it can be done (1990)

The actual process of converting a monthly technical journal from a printed hardcopy publication to an online information source is analyzed. In publishing the hardcopy version, there were problems of high printing costs and late distribution. It was also found that readers were keeping stacks of back issues for reference. The online information source is easy to access, contains current information and a history of all information published during the two previous years, provides updated information between publication dates, and gives the users the opportunity to print a hardcopy at their own location. The task of selling an online publication to the users is also discussed. By concentrating on the needs of the users and working within the constraints of the local environment, it was found that publishing technical information online can benefit both the information users and the information providers. It is concluded that online publication is a positive step toward achieving the paperless office.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The House of Morgan (1990)

A saga of the Anglo-American banking dynasty that superseded the Barings and the Rothschilds to become the dominant financial empire of the 20th century. It covers 150 years, tracing the Morgan empire from Dickensian beginnings in Victorian London to the summit of world finance. An account of an institution and the men who ran it, this book is a look at the real power - the money - behind the historical events, the eminent statesmen and the industrial empires that have transformed the world in the last century and a half. Based on unprecedented access to Morgan records and over 100 interviews, it lays bare the secrets of the world's most mysterious financial firms. As England's Wall Street agent, the Morgan bank was privy to its most sensitive financial dealings. It financed the Allies in World War I and purchased their munitions. It restored England to the gold standard in 1925 and was blamed for the 1931 banker's ramp that toppled Ramsay Macdonald's government. In World War II, it insured Lend-Lease aid to Britain by arranging the sale of a Courtaulds subsidiary. It even lobbied Washington to join the abortive invasion in the 1950s.
Rolling and sliding resistive forces on balls moving on a flat surface (1986)

A simple theory of rolling resistance is compared to experimental results on rolling billiard balls. The resistive force is shown to be independent of velocity for velocities smaller than 0.5 m/s. The sliding friction coefficient is determined by measuring the force needed to immobilize a skidding ball. The coefficient increases with increasing sliding velocity and approaches asymptotically the value of 0.21 which is quoted in the literature.