gebhart/patrepeval huggingface dataset:
Piezoelectric materials and their applications in radio frequency domain and telecommunications (2015)

The market of telecommunications has grown rapidly this last decade. The main parameter regarding users is the data rate. It must be increased with each new standard. To reach this goal, the constraints on electronics circuits and devices for radio frequency front end had increased drastically, particularly to obtain high quality radio frequency filters. In this context, piezoelectric materials and devices offer the only way to get radio frequency filters with low insertion losses and high out of band rejection at the same time. A lot of works were performed by several research teams in the world, devoted to materials, to technological steps and to devices. Among piezoelectric materials, some of them are candidates for telecommunications applications. After a review of the main piezoelectric materials, the desired characteristics have been analysed, and finally, few materials are retained. The trends in functionality terms and consequently of required materials for filters are presented for future generations.
Improving Prediction Accuracy Using Entropy Weighting in Collaborative Filtering (2009)

In this paper, we evaluate performance of existing similarity measurement metric and propose a novel method using user's preferences information entropy to reduce MAE in memory-based collaborative recommender systems. The proposed method applies a similarity of individual inclination to traditional similarity measurement methods. We experiment on various similarity metrics under different conditions,which include an amount of data and significance weighting from n/10 to n/60, to verify the proposed method. As a result, we confirm the proposed method is robust and efficient from the viewpoint of a sparse data set, applying existing various similarity measurement methods and significance weighting.
Synthesis of 7-(furan-2-yl)-7,8,10,10a-tetrahydro-6H-benzo[c]-chromen-6,9(6aH)-diones (2010)

Methods of synthesis were developed for 7-(furan-2-yl)-substituted 7,8,10,10a-tetrahydrobenzo[c] chromen-6,9-diones by regioselective [4+2]-cycloaddition of coumarin-3-carboxylic acids to 2-(3-trimethylsiloxybuta- 1,3-dien-1-yl)furans. The [4+2]-cycloaddition was efficiently catalyzed with L-proline.
Spindle microtubules in flux (2005)

Accurate and timely chromosome segregation is a task performed within meiotic and mitotic cells by a specialized force-generating structure--the spindle. This micromachine is constructed from numerous proteins, most notably the filamentous microtubules that form a structural framework for the spindle and also transmit forces through it. Poleward flux is an evolutionarily conserved mechanism used by spindle microtubules both to move chromosomes and to regulate spindle length. Recent studies have identified a microtubule-depolymerizing kinesin as a key force-generating component required for flux. On the basis of these findings, we propose a new model for flux powered by a microtubule-disassembly mechanism positioned at the spindle pole. In addition, we use the flux model to explain the results of spindle manipulation experiments to illustrate the importance of flux for proper chromosome positioning.
Design of 60 GHz Vector Modulator Based Active Phase Shifter (2012)

Thispaper presents a design of 60 GHz active phase shifter for next generation mm-Wave WPAN using 90 nm TSMC CMOS technology.The vector modulator based phase shifter is chosen as a prototype because it provides accurate resolution over wide bandwidth. The phase shifter is controlled by binary current weighted 5-bit DAC. A miniaturized Marchand balun and a 2-stage poly phase filter are used to generate differential I/Q signal from mm-Wave single input. The three CS (Common Source) amplifiers are adopted for providing enough gain to the proposed circuit. The measured phase resolution of the circuit is 11.250 with maximum 30 phase error. The peak gain from the S-parameter measurement is 9 dB while drawing 50 mA from a 1.2 V supply.
Intestinal lymph absorption of butter, corn oil, cod liver oil, menhaden oil, and eicosapentaenoic and docosahexaenoic acid ethyl esters in rats (1996)

Adult male rats were surgically given a drainage catheter in the main mesenteric lymph duct. After an overnight fast, five groups of rats received intragastrically, in one bolus, butter, corn oil (CO), cod liver oil (CLO), menhaden oil (MO), or ethyl esters of eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids (K80). Intestinal lymph was collected in these conscious animals, each hour during the first 6 h and in a single sample for the next 18 h. The absorption peak appeared earlier after MO and CO than after CLO administration. The quantities of triglycerides recovered during the first 6 h were significantly lower after butter (91 mg) and K80 (54 mg) administration than for the other three oils. No difference was observed between the vegetable oil and the marine oils (CO = 173 mg, CLO = 148 mg, MO = 180 mg). The total triglyceride recovered in 24 h was highest after CLO (410 mg) and lowest with K80 (146 mg). An increase in the weight percentage of some characteristic fatty acids of the lipid mixtures was observed: oleic acid for butter, oleic and linoleic acids for CO, EPA and DHA for CLO, MO, and K80. Chylomicrons were the largest with CO, more numerous and smaller with CLO, and the smallest with K80. Results obtained illustrated the relation between gastrointestinal hydrolysis, enterocyte biochemical events, and lymph triglyceride absorption profiles as related to the composition and distribution of triglyceride fatty acids.
An introductory capstone design course on embedded systems (2011)

We review an introductory course in embedded systems that characterizes embedded systems not by resource constraints, but rather by interactions with the physical world. This course teaches students the basics of models, analysis tools, and design for embedded systems. Traditional undergraduate courses in embedded systems focus on ad-hoc engineering practices and the use of existing modeling techniques, often omitting critical analysis and meta-modeling; we emphasize model-based design of embedded and cyber-physical systems. Students learn how to model the physical world with continuous time differential equations, and how to model computation using logic and discrete models such as state machines. Students evaluate these modeling techniques through the use of meta-modeling, illuminating the interplay of practical design with formal models of systems that incorporate both physical dynamics and computation. Students learn formal techniques to specify and verify desired behavior. A combination of structured labs and design projects solidifies these concepts when applied to the design of embedded and cyber-physical systems with real-time and concurrent behaviors.
3-(4-Bromophenyl)-1-phenyl-1H-pyrazole-4-carbaldehyde (2012)

The asymmetric unit of the title compound, C16H11BrN2O, contains two independent mol-ecules with slightly different geometries. The 4-bromo-benzene ring forms dihedral angles of 26.0 (2) and 39.9 (7)° with the pyrazole ring in the two mol-ecules while the phenyl ring is oriented at 19.7 (5) and 7.3 (0)° with respect to the pyrazole ring.
A smart itsy bitsy spider for the Web (1998)

As part of the ongoing Illinois Digital Library Initiative project, this research proposes an intelligent agent approach to Web searching. In this experiment, we developed two Web personal spiders based on best first search and genetic algorithm techniques, respectively. These personal spiders can dynamically take a user's selected starting homepages and search for the most closely related homepages in the Web, based on the links and keyword indexing. A graphical, dynamic, Java-based interface was developed and is available for Web access. A system architecture for implementing such an agent-based spider is presented, followed by detailed discussions of benchmark testing and user evaluation results. In benchmark testing, although the genetic algorithm spider did not outperform the best first search spider, we found both results to be comparable and complementary. In user evaluation, the genetic algorithm spider obtained significantly higher recall value than that of the best first search spider. However, their precision values were not statistically different. The mutation process introduced in genetic algorithm allows users to find other potential relevant homepages that cannot be explored via a conventional local search process. In addition, we found the Java-based interface to be a necessary component for design of a truly interactive and dynamic Web agent. © 1998 John Wiley & Sons, Inc.
POU-domain factor expression in the trigeminal ganglion and implications for herpes virus regulation (1996)

The restriction of herpes virus latency to mammalian sensory ganglia has led to a search for tissue-specific regulatory molecules in these neurons which alter viral gene expression. Based primarily on work in sensory-related cell lines, several prior reports have suggested that the POU-domain transcription factor Oct-2 functions in the establishment of viral latency. Here we show that among the POU-domain transcriptional regulators, Brn-3.0 is abundantly expressed in the postnatal trigeminal ganglion. In contrast, Oct-2 message and protein are not detectable by sensitive and specific assays, effectively excluding a direct role for Oct-2 in the viral life cycle in vivo.
The effect of filtering on the performance of OFDM systems (2000)

Filtering is required in the practical implementation of orthogonal frequency division multiplex (OFDM) systems operating at radio frequencies. These filters smear the transmitted waveform, and cause inter-symbol interference (ISI) between the blocks, forcing a further extension to the cyclic prefix. The tighter the filtering, the smaller the frequency bandwidth (guard-band) needed between adjacent channel users and the longer the prefix extension. Equations are developed that relate the prefix extension to the guard-band given the required subchannel signal-to-noise ratio (SNR). Numerical evaluation is then used to show the trade off between time domain and frequency domain capacity loss. There is an optimum guard-band loss, that will minimize the total (time+frequency) capacity loss. The total loss reduces as the inverse fast Fourier transform (IFFT) size N increases and the required SNR reduces. The capacity loss exceeds 40% when N=32 and SNR is 33 dB (needed for 8DPSK with an symbol error rate (SER) of 3% and a margin of 10 dB). Some of the loss can be reduced by using better filters (Chebyshev II), but the general trend of the results imply that schemes with a low number of subchannels (N<16) will not work well with high order modulations.
A Review of Radio Resource Management in FemtoCell from Interference Control Perspective (2017)

A new and emerging technology called femtocell brings significant improvement in terms of better indoor coverage and higher data rate. Able to be installed and maintained by individual user, femtocell provides a cost effective solution to mobile operators to achieve higher network capacity. However, interference due to two-tier network structure introduces many challenges for successful femtocell deployment. In this article, we summarize various interference and resource management techniques proposed in the context of femtocell. Specifically, we focus on interference avoidance techniques. First, the overview of femtocells, its architecture, and common issues are presented. Next, various interference avoidance techniques are reviewed. At the end, several important research directions are outlined
Media spaces (1993)

article Free Access Share on Media spaces: bringing people together in a video, audio, and computing environment Authors: Sara A. Bly Xerox Palo Alto Research Center, Palo Alto, CA Xerox Palo Alto Research Center, Palo Alto, CAView Profile , Steve R. Harrison Xerox Palo Alto Research Center, Palo Alto, CA Xerox Palo Alto Research Center, Palo Alto, CAView Profile , Susan Irwin Xerox Palo Alto Research Center, Palo Alto, CA Xerox Palo Alto Research Center, Palo Alto, CAView Profile Authors Info & Claims Communications of the ACMVolume 36Issue 1Jan. 1993 pp 28–46https://doi.org/10.1145/151233.151235Published:01 January 1993Publication History 535citation6,037DownloadsMetricsTotal Citations535Total Downloads6,037Last 12 Months266Last 6 weeks32 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my Alerts New Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF
The Ineluctable Role of ACE-2 Receptors in SARS COV-2 Infection and Drug Repurposing as a Plausible SARS COV-2 Therapy: A Concise Treatise (2021)

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the etiological agent for the COVID-19 infectious disease that spreads via the respiratory route and has reached a drastic level of a global pandemic. Symptoms of COVID-19 may vary from mild (fever, dry cough, shortness of breath) to severe pneumonia-like respiratory symptoms as exacerbation of disease occurs. Unlike SARS-CoV, the SARSCoV- 2 has a higher binding affinity to ACE-2 receptors, which signifies its higher transmission rate from person to person. Even though ACE-2 is significant in the reninangiotensin- aldosterone system (RAAS) regulation that exhibits protection to various organs, it plays a significant role in COVID-19 disease pathogenesis. Viral interferences with the ACE-2 peptidase activity are found in SARS-CoV-2 infected patients leading to pro-inflammatory responses, hypertension and multi-organ damage. Angiotensinconverting enzyme-2 is constrained to a variety of organ systems, but surface ACE-2 receptors on lung epithelia are largely affected, which lead to pathological alterations in lung histology which may progress to respiratory failure. The viral tropism mainly occurs by the attachment to the angiotensin-converting enzymes-2 receptors in the host cell; thus drugs targeting ACE-2 expressions may arise as the future therapeutic strategy to combat COVID-19 infections. The innovative approach of repurposing drugs has shown temporary effectiveness to curb the rising pandemic. This article mainly focuses on the prominence of ACE-2 receptors which are expressed during the COVID infections and the repurposing strategy of available drug therapies.
Nets-within-nets for modeling emergent patterns in ontogenetic processes (2021)

Ontogenesis is the development of an organism from its earliest stage to maturity, including homeostasis maintenance throughout adulthood despite environmental perturbations. Almost all cells of a multicellular organism share the same genomic information. Nevertheless, phenotypic diversity and complex supra-cellular architectures emerge at every level, starting from tissues and organs. This is possible thanks to a robust and dynamic interplay of regulative mechanisms. To study ontogenesis, it is necessary to consider different levels of regulation, both genetic and epigenetic. Each cell undergoes a specific path across a landscape of possible regulative states affecting both its structure and its functions during development. This paper proposes using the Nets-Within-Nets formalism, which combines Petri Nets' simplicity with the capability to represent and simulate the interplay between different layers of regulation connected by non-trivial and context-dependent hierarchical relations. In particular, this work introduces a modeling strategy based on Nets-Within-Nets that can model several critical processes involved in ontogenesis. Moreover, it presents a case study focusing on the first phase of Vulval Precursor Cells specification in C.Elegans. The case study shows that the proposed model can simulate the emergent morphogenetic pattern corresponding to the observed developmental outcome of that phase, in both the physiological case and different mutations. The model presented in the results section is available online at https://github.com/sysbio-polito/NWN_CElegans_VPC_model/.
Establishment of a Multi-Disciplinary Platform for HIV-Infected Patients with Neurological Complications (P4.310) (2014)

OBJECTIVE: To describe the functioning and clinical results of the first multi-disciplinary neuro-HIV platform for HIV-infected patients in Switzerland. BACKGROUND: Despite the availability of combination antiretroviral therapy (cART), neurological complications, in particular the cognitive ones, remain a challenge in HIV-infected patients. Frequently, co-morbidities are intermingled with HIV, rendering the diagnostic and therapeutic procedures difficult in these patients. DESIGN/METHODS: In March 2011, we set up, at the Lausanne University Hospital, a multi-disciplinary Neuro-HIV Platform composed of infectiologists, neurologists, neuropsychologists, psychiatrists, and neuroradiologists. During a day-hospitalization, the patient benefits from a clinical evaluation by all these specialists, together with blood work-up, brain MRI and lumbar puncture. At the end of the day, diagnosis and treatment plan are discussed by the whole team. RESULTS: From March 2011 to September 2013, we evaluated 75 consecutive patients (49 men, 49.8±9.3 y, nadir CD4+ T cells 170.8±143.8 cells/mm3, current CD4+ 569.9±258 cells/mm3, 75% with undetectable plasma HIV RNA, 90% with undetectable CSF viral load, 99% on cART, revised CPE score 7.6±1.6). Main referral cause was cognitive complaints (89%), which were confirmed in 78% of those. The leading causes of cognitive disorders were psychiatric conditions (44% of all the confirmed) and HIV-associated neurocognitive disorders (HAND) (29%). Neurological deficits were evidenced in 47% of the total cohort (central signs in 20%; peripheral signs in 27%). Brain MRI was abnormal in 52%, mostly due to slight to moderate cortical/subcortical atrophy. The presence of HAND was correlated with a lower nadir CD4+ T cells (p=0.007). No other correlation was found between HIV disease status and neurological deficits. CONCLUSIONS: Neurological/neuropsychological complications are frequent in well-treated HIV+ patients, consisting mainly in cognitive disorders. The latter are more often ascribed to a psychiatric condition than to HIV infection itself. A multi-disciplinary approach is a real asset to take care of these complex patients. Study Supported by: We are indebted to AbbVie, Gilead, Bristo-Myers Squibb who made this Neuro-HIV platform possible.
Correct Stability Condition and Fundamental Performance Analysis of the α-β-γ-δ Filter (2018)

This paper theoretically analyzes the fundamental performance of a fourth-order steady-state moving object tracking filter, called an α - β - γ - δ filter. The α - β - γ - δ filter considers estimations of jerk (time-derivative of acceleration) in the motion of targets. First, regarding the stability conditions of the α - β - γ - δ filter, we prove that there are unstable cases even when the conventionally derived stability conditions are satisfied, and then we derive the correct stability conditions. Next, we analytically derive performance indices that indicate the steady-state errors for targets with typical motions. Based on the derived indices, the optimal performance of the α - β - γ - δ filter is theoretically analyzed and compared with that of the traditional second- and third-order steady-state tracking filters, i.e., α - β and α - β - γ filters. Numerical analyses and simulations are used to verify the advantages and disadvantages of the α - β - γ - δ filter over the above-mentioned filters. The practicality of the use of jerk for the tracking filtering problem is revealed in this paper.
SAFE RPC - Auditing Mixnets Safely using Randomized Partial Checking (2010)

Secure voting systems like PunchScan and Scantegrity use mixnets which are verified using Randomized Partial Checking (RPC). This simple and efficient technique can lead to privacy loss and may, in an extreme case, result in linking all the clear text ballots to the voters who cast them, thus completely destroying the secrecy of all ballots and circumventing the functionality of the mixnet. We suggest a simple technique, Secure RPC (SRPC), that uses RPC in a way that guarantees maximal privacy in all possible cases. We prove that SRPC does not asymptotically reduce the integrity offered by RPC.
Text Watermarking using Sinusoidal Greyscale Variations of Font based on Alphabet Count (2015)

6 ABSTRACT: In this paper, an imperceptible, fragile text watermarking algorithm has been proposed. The font color of each alphabet in the text document is varied in the greyscale in accordance with a sine function. The amplitude for the same is generated using a hash function. The authenticity of the received document can be verified by comparing the actual color values of the letters in the document with the expected values generated by the sine function. This scheme is highly sensitive to various malicious text related tampering attacks hence preserving the integrity of the document. Unlike earlier methods, the proposed algorithm provides tamper detection while maintaining watermark invisibility. The attack analysis illustrates that the scheme is efficient and secure.
Millimeter‐scale genetic gradients and community‐level molecular convergence in a hypersaline microbial mat (2008)

To investigate the extent of genetic stratification in structured microbial communities, we compared the metagenomes of 10 successive layers of a phylogenetically complex hypersaline mat from Guerrero Negro, Mexico. We found pronounced millimeter-scale genetic gradients that were consistent with the physicochemical profile of the mat. Despite these gradients, all layers displayed near-identical and acid-shifted isoelectric point profiles due to a molecular convergence of amino-acid usage, indicating that hypersalinity enforces an overriding selective pressure on the mat community.
Deferred imitation of human head movements by an active stereo vision head (2002)

Designing a mechanism that will allow a robot to imitate the actions of a human, apart from being interesting for opening the possibilities for efficient social learning through observation and imitation, is challenging since it requires the integration of information from the visual, memory and motor systems. This paper deals with the implementation of an imitation architecture on an active, stereo vision head, and describes our experiments on the deferred imitation of human head movements.
Notice of Removal: A small three-way valve for hydraulic actuators using piezoelectric transducers (2017)

Removed.
A simple and robust reversible redox–fluorescence molecular switch based on a 1,4-disubstituted azine with ferrocene and pyrene units (2006)

Taking advantage of the properties of the ferrocene as a redox and electron donor active unit and the pyrene as a fluorescent unit, dyad 2 shows a fast and reversible redox-switchable fluorescence emission.