gebhart/patrepeval huggingface dataset:
Transistor Television Picture if Double Tuned Amplifiers (1959)

The recent development of suitable VHF transistors has made possible the design of transistors amplifiers at the picture intermediate frequencies. Picture i-f strips using single-tuned circuits have been successfully built. <R xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1,2<R> This paper describes the design of a picture i-f strip using double-tuned circuits.</R></R>
Amplify based double-differential modulation for cooperative communications (2009)

In this paper, we propose double-differential (DD) modulation for amplify-and-forward (AAF) cooperative communications system. The proposed system works very well in the presence of carrier offsets without any channel knowledge, where the previously proposed differential AAF cooperative system breaks down. We have derived the approximate symbol error rate (SER) of the proposed system. In addition, numerical power allocation is proposed to further improve the performance of the system. The proposed cooperative system outperforms the same rate trained cooperative system and conventional direct transmission based DD system.
abstract) Case Study of the Design of a Viterbi Decoder (1997)

This paper describes the design of an ASIC performing the Viterbi decoder function with a constraint length of 15 and at a speed of 4.4 Mb/s. The architecture of the chip is described, as well as the design challenges which were overcome. The author also describes the successful application of the design system.
Development of a Novel Multi-Functional Rehabilitation Robot (2017)

With the development of aging society, the number of hemiplegia patients grows rapidly and over 75% of survivors suffering hemiplegia need rehabilitation training. Traditional training methods need one or more physical therapists to server one patient at the same time. In order to reduce the workload of the physical therapist and to improve patient rehabilitation performance, this paper presents a novel multi-functional rehabilitation robot, which can assist hemiplegic patient for stand up/squatting training, Gravity shifting training and Walking training. The robot system consists of two Support manipulator, Screw lift mechanism, Weight balance device and a Treadmill. Different from the existing rehabilitation robot, the design philosophy of the multi-functional support robot is to mimic hand movement of physical therapist. It is flexible to fit in patients with individual differences. The design of the detailed mechanical components is illustrated. The proposed robot system can be used in multi-function exercise for hemiplegic patient.
Multipurpose audio signal compander (1993)

A new 20 b digital signal processor is presented which is especially designed to provide a cost-effective solution for audio data reduction and corresponding channel decoding tasks. The Multipurpose Audio Signal Compander (MASC) combines the computing power of a digital signal processor, the sophisticated features of a single chip controller, and generous portions of RAM and ROM. The MASC is a pipelined reduced-instruction-set-computer (RISC) machine with 25 ns cycle time; it is designed in 0.8 mu m CMOS technology. The MASC is not only applicable for data compression tasks but also for multimedia, high-definition television (HDTV) digital audio broadcasting (DAB), echo cancellers, and other sophisticated consumer audio tasks. The first applications will be a full ISO Motion Pictures Experts Group (MPEG) audio decoder including Layer 3 and EUREKA 176 DAB channel and source decoder.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Impact of wheat endogenous lipids on the quality of fresh bread: Key terms, concepts, and underlying mechanisms (2020)

While wheat (Triticum aestivum L.) flour contains only low levels of lipids (2.0% to 3.0%), they tremendously affect fresh bread quality. They are either starch (30% to 40%) or nonstarch (60% to 70%) lipids. While the former are important in bread staling, they affect neither bread loaf volume nor crumb structure as they are only set free at the very end of the baking process and prior to that they are not available because of their location inside starch granules. This review mainly focuses on wheat nonstarch lipids and how they impact on bread quality. Traditional approaches for investigating their role in bread making have been to use flours varying in bread making quality, to defat and reconstitute flour with (fractions of) the extracted lipids and/or to supplement flour with lipids from wheat or other sources. More recently, lipases have been successfully applied to investigate how wheat lipids affect bread making. It is generally accepted that their impact on bread loaf volume and crumb structure largely if not entirely relates to that on bread dough gas cells stability. However, today there are still different views and hypotheses on the mechanism(s) whereby they impact fresh bread quality. This review first defines and introduces the key terms, concepts, and theories related to lipids, lipases, and bread making. Next, the effects that wheat endogenous lipids and their enzymatically released hydrolysis products have on fresh bread properties and the mechanisms whereby they exert these effects are reviewed.
What are the benefits and harms of risk stratified screening as part of the NHS breast screening Programme? Study protocol for a multi-site non-randomised comparison of BC-predict versus usual screening (NCT04359420) (2020)

Retrospectively registered with clinicaltrials.gov (NCT04359420).
Analysis of serial synovial biopsies in patients with rheumatoid arthritis: description of a control group without clinical improvement after treatment with interleukin 10 or placebo. (1999)

Studies of serial synovial biopsies from patients treated with placebo or IL-10 revealed no changes in immunohistologic scores. This suggests that the biopsy procedure itself has no effect on the features of the synovium.
Visual Simulation for Embossing Bronze Plates (2012)

The embossing of bronze plates is a type of engraving art, created by hitting a nail onto a bronze plate with a hammer. The final appearance critically depends on several factors such as the nail gauge and hit-point density. It is necessary to adequately determine these factors before starting the process because the process is irreversible. This is not generally easy for novice creators. We propose a computer simulation system for embossed bronze plate creation, which allows users to estimate appearances by changing factors such as nail gauge. In a user-test, subjects reported that their creation process became much easier with the proposed system.
Cover Image, Volume 14, Issue 4 (2020)

The cover image is based on the Modeling and Analysis Article Impact of co‐product selection on techno‐economic analyses of alternative jet fuel produced with forest harvest residuals by Kristin Brandt et al., https://doi.org/10.1002/bbb.2111 . image
Personal care products : effects on skin surface pH (1990)

L'utilisation de divers savons augmente le pH de la peau (mesure avec une electrode plane); des lotions (en particulier celles contenant du chlorure de dimethyl distearyl ammonium) utilisees avant ou apres lavage peuvent modifier cet effet
Mitogenic activity of Sindbis virus and its isolated glycoproteins (1982)

Purified preparations of Sindbis virus, a member of the togavirus family, are mitogenic for lymphocytes from a number of different mouse strains. Cell separation techniques, as well as studies using lymphocytes from the congenitally athymic BALB/c nu/nu mouse, showed that Sindbis virus is a T-cell-independent B-cell mitogen. Additionally, the envelope glycoproteins of Sindbis virus, isolated by Triton X-100 extraction and butanol precipitation, stimulated lymphocytes to incorporate five times as much [3H]thymidine into their DNA as did the Sindbis virion. These results are similar to those previously reported for vesicular stomatitis virus and herpes simplex virus types I and II and for the purified glycoproteins of vesicular stomatitis virus and influenza virus.
Digital ladder structures and coefficient sensitivity (1972)

Recently, there has been a great deal of interest in the implementation of digital filter structures with low-coefficient word length. A conjecture has been made by Fettweis that if digital filter structures are modeled after analog ladder structures, which are known to have desirable coefficient sensitivity properties, then the digital ladder structures will also have these properties and could be implemented with low-coefficient word lengths. To investigate this conjecture, a seventh-order Chebyshev low-pass filter was realized as a digital ladder structure and the coefficient sensitivity was analyzed experimentally under coefficient rounding in floating-point representation. To serve as a comparison similar examples of cascade structures of direct and coupled form sections were also analyzed in the same manner. The conclusions drawn are that, indeed, the digital ladder structures in many cases can be implemented with lower coefficient word lengths than the conventional structures.
NMR relaxometric studies of Gd(III) complexes with heptadentate macrocyclic ligands (1998)

The water 1H and 17O NMR relaxation properties of solutions containing Gd(III) chelates of the heptadentate DO3A, PCTA[12] and PCTP[12] ligands were thoroughly investigated and the results obtained are compared with those previously reported for other Gd(III) complexes with octadentate ligands {H3DO3A=1,4,7,10-tetraazacyclododecane 1,4,7-triacetic acid; H3PCTA[12]=3,6,9,15-tetraazabicyclo[9.3.1]pentadeca-1(15),11,13-triene-3,6,9-triacetic acid; H6PCTP[12]=3,6,9,15-tetraazabicyclo[9.3.1]pentadeca-1(15),11,13-triene-3,6,9-tris(methanephosphonic) acid}. The observed behaviour is consistent with a hydration number q=2 in the case of GdDO3A and GdPCTA[12] and q=1 in the case of PCTP[12]. The high relaxivity of the latter complex is accounted for in terms of the occurrence of an additional contribution arising from water molecules tightly bound to the phosphonate moieties on the surface of the paramagnetic chelate. Furthermore, it was found that the decreased relaxation rates observed at basic pH in the case of GdDO3A and GdPCTA[12] can probably be ascribed to a partial decrease in their hydration. The measurement of 17O NMR transverse relaxation rates, in the temperature range 273–342 K, allowed the assessment of the water exchange rate between the coordination site and the bulk solvent. A particularly short exchange lifetime was measured for the octacoordinate GdPCTP[12], which suggests the occurrence of an associative exchange mechanism. Further insights into the understanding of the structural properties of the three complexes were gained by measuring the magnetic field dependence (NMRD profiles) of the proton relaxivity on a Koenig–Brown field cycling relaxometer. © 1998 John Wiley & Sons, Ltd.
BGP Add-Paths: The Scaling/Performance Tradeoffs (2010)

Internet Service Providers design their network with resiliency in mind, having multiple paths towards external IP subnets available at the borders of their network. However, with the current internal Border Gateway Protocol, BGP routers and route reflectors only propagate their (unique) best path over their iBGP sessions. As a result, at the BGP router level, path diversity tends to be poor. Such lack of path diversity can lead to MED oscillations, prevents an efficient use of multipath BGP and does not allow for a fast and local recovery upon nexthop failure. Advertising multiple paths over iBGP sessions with BGP Add-Paths solves those issues, depending on the way the additional paths are selected. In this paper, we analyze the various options for the selection mode of the paths to be advertised. We show that these modes differently fulfill the needs of Add-Paths applications such as fast recovery upon failure and MED oscillation avoidance. We also show in our analysis that the costs and benefits bound with these modes depend on the connectivity of the AS where it is deployed. To support the analysis, we developed a tool allowing to measure the scaling of these modes in a given network. We illustrate the utilization of this tool on synthetic Internet topologies, and provide some recommendations for the choice of an Add-Paths selection mode.
Restoration of Bioactive Lantibiotic Suicin from a Remnant lan Locus of Pathogenic Streptococcus suis Serotype 2 (2013)

Lantibiotics are ribosomally synthesized, posttranslationally modified antimicrobial peptides. Their biosynthesis genes are usually organized in gene clusters, which are mainly found in Gram-positive bacteria, including pathogenic streptococci. Three highly virulent Streptococcus suis serotype 2 strains (98HAH33, 05ZYH33, and SC84) have been shown to contain an 89K pathogenicity island. Here, on these islands, we unveiled and reannotated a putative lantibiotic locus designated sui which contains a virulence-associated two-component regulator, suiK-suiR. In silico analysis revealed that the putative lantibiotic modification gene suiM was interrupted by a 7.9-kb integron and that other biosynthesis-related genes contained various frameshift mutations. By reconstituting the intact suiM in Escherichia coli together with a semi-in vitro biosynthesis system, a putative lantibiotic named suicin was produced with bactericidal activities against a variety of Gram-positive strains, including pathogenic streptococci and vancomycin-resistant enterococci. Ring topology dissection indicated that the 34-amino-acid lantibiotic contained two methyllanthionine residues and one disulfide bridge, which render suicin in an N-terminal linear and C-terminal globular shape. To confirm the function of suiK-suiR, SuiR was overexpressed and purified. In vitro analysis showed that SuiR could specifically bind to the suiA gene promoter. Its coexpression with suiK could activate suiA gene promoter in Lactococcus lactis NZ9000. Conclusively, we obtained a novel lantibiotic suicin by restoring its production from the remnant sui locus and demonstrated that virulence-associated SuiK-SuiR regulates its production.
A Dynamic Simulation Framework for the Analysis of Battery Electric Vehicle Thermal Management Systems (2020)

As vehicle electrification is expanding in response to more stringent emissions standards and shifting consumer preferences, extending the driving range remains critical to broadening the adoption of battery electric vehicles (BEV). This challenge can be addressed in part through more efficient operation of the thermal management system in BEVs, which has a significant influence on range and performance, especially under extreme weather conditions. This study develops a simulation framework for the analysis of a BEV thermal management systems under long-range test procedures defined by the Multi-Cycle Test (MCT). A baseline thermal management system configuration is defined to reflect those typically found in long-range BEVs, so as to provide insight into the design and performance of current systems. Parametric studies are conducted across a range of ambient conditions from 0°C to 40°C and drive cycles including urban/city (UDDS), highway (HFEDS), and constant speed cycles. Operating temperature setpoints for the cabin, battery, electronics, and other components are met using the standard system configuration, albeit with significant deleterious impacts on vehicle range and cycle control. At low ambient temperatures, a maximum 30% decrease in driving range is predicted. Across the parametric values investigated, the choice of cabin setpoint temperature affects the driving range on the order of ~10% across heating and cooling cases. The transient drive cycle response for representative cooling cases is presented and reveals oscillations in system behavior about the chosen setpoints; these oscillations are a direct result of the secondary loop liquid cooling architecture. As a result of the present study, perspectives on alternative system configurations that offer battery thermal management and cabin comfort as well as the integration of waste heat recovery are outlined as future work.
A flexible, plugin-based smarthome simulation framework with application to navigational intention prediction (2015)

The need for intelligent environments (“Smarthomes”) to monitor and assist elderly individuals is on the rise and is projected to continue into the future. To assist in the development of autonomous Smarthome algorithms, a robust, flexible and extendable simulation environment is required. In this paper we present our approach to fulfilling this need through the development of a plugin-based simulation architecture, and include three different artificial intelligence based approaches towards the problem of predicting and modeling user intentions within a Smarthome environment.
Importance Sampling Spherical Harmonics (2009)

Abstract In this paper we present the first practical method for importance sampling functions represented as spherical harmonics (SH). Given a spherical probability density function (PDF) represented as a vector of SH coefficients, our method warps an input point set to match the target PDF using hierarchical sample warping. Our approach is efficient and produces high quality sample distributions. As a by‐product of the sampling procedure we produce a multi‐resolution representation of the density function as either a spherical mip‐map or Haar wavelet. By exploiting this implicit conversion we can extend the method to distribute samples according to the product of an SH function with a spherical mip‐map or Haar wavelet. This generalization has immediate applicability in rendering, e.g., importance sampling the product of a BRDF and an environment map where the lighting is stored as a single high‐resolution wavelet and the BRDF is represented in spherical harmonics. Since spherical harmonics can be efficiently rotated, this product can be computed on‐the‐fly even if the BRDF is stored in local‐space. Our sampling approach generates over 6 million samples per second while significantly reducing precomputation time and storage requirements compared to previous techniques.
Transmitter-like release and pharmacological activities of levodopa. (1993)

Levodopa was released by depolarizing stimuli from rat striata in a transmitter-like manner in vitro and in vivo. Exogenous nanomolar levodopa stereoselectively facilitated the release of dopamine and noradrenaline via presynaptic beta-adrenoceptors in brain slices even under inhibition of aromatic L-amino acid decarboxylase. This facilitation was competitively antagonized by levodopa methyl ester, whereas it was non-competitively antagonized by propranolol. Furthermore, picomolar levodopa stereoselectively potentiated the isoproterenol-induced facilitation of the noradrenaline release. Levodopa methyl ester selectively antagonized this potentiation, while propranolol antagonized both the facilitation by isoproterenol alone and its potentiation by levodopa. The recognition site for levodopa could be differentiated from the carrier proteins for levodopa transport, because nanomolar levodopa methyl ester abolished the levodopa-induced facilitation of the noradrenaline release, whereas a 30 times higher concentration of L-phenylalanine or L-leucine produced no antagonism. Microinjection of levodopa into the nucleus tractus solitarii led to dose-dependent decreases in arterial blood pressure and heart rate in rats in a levodopa methyl ester-sensitive manner. Based on these findings, we propose that levodopa itself is an endogenous neurotransmitter in the CNS.
Design considerations for dual winding permanent magnet synchronous machines (2012)

This paper presents design and analysis performed for a dual winding electric machine. Windings of the machine are concentrated type so that electrical and magnetic isolation is maintained. For this reason, the proposed structure could be a reasonable candidate for fault tolerant applications. As required by some applications (electric accessory drive system (EADS) for hybrid electric vehicles), simultaneous motoring and generating operations can be implemented in a single housing of electric machine. Design considerations of the proposed electric machine are outlined in the paper. Also a comparison between distributed winding topology and concentrated winding topologies is performed. Finally experimental results discussed.
Endovaskuläre Behandlung zerebraler arterieller Aneurysmen mit selektiv ablösbaren Platinspiralen (2008)

In 14 patients (eight men, six women; mean age 58 [31-72] years) with intracranial aneurysm (basilar artery in nine, anterior branches in five) the aneurysm was occluded by electrically detachable platinum coils, advanced into the aneurysm introduced via a percutaneously introduced catheter system, under local anaesthesia and fluoroscopic control. Ten patients had acute subarachnoid haemorrhage (stage II-IV). In two patients several sessions were required before complete occlusion was achieved. In one patient, with a basilar artery aneurysm, the aneurysmal wall was perforated (angiographically demonstrated contrast-medium extravasation), but this remained clinically asymptomatic. There has been no recurrence or renewed bleeding during a follow-up period of 6-12 months. The method is a highly promising addition to the micro-neurosurgical treatment of such aneurysms. However, as long-term results are still awaited, indications for using the method should be strict and only those patients should be so treated in whom operation would be associated with a high risk or who are inoperable.
A theoretical study of 1-2, 1-3, and 1-4 hydride shifts in the cyclohexyl cation (1983)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA theoretical study of 1-2, 1-3, and 1-4 hydride shifts in the cyclohexyl cationJ. J. Dannenberg, C. Abrams, C. Decoret, J. C. Rayez, and F. MetrasCite this: J. Org. Chem. 1983, 48, 19, 3315–3317Publication Date (Print):September 1, 1983Publication History Published online1 May 2002Published inissue 1 September 1983https://pubs.acs.org/doi/10.1021/jo00167a031https://doi.org/10.1021/jo00167a031research-articleACS PublicationsRequest reuse permissionsArticle Views264Altmetric-Citations4LEARN 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