gebhart/patrepeval huggingface dataset:
3.2 mW ultrasonic LSK modulator for uplink communication in deep implanted medical devices (2014)

The wireless body area network (WBAN) includes up to ten sensor nodes and an external control unit to synchronize the wireless power transfer and communication. A battery operated sensor node is designed using discrete components and tested on standard FR4 substrate. The board dimensions are 2.7 × 4.9 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> which fits inside the Kinetra neurostimulator casing provided by Medtronic, wherein a six elements array transducer (5 × 10 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ) is glued. The transponder power consumption is 3.2 mW when transmitting data towards the control unit, and only 49 μW when in sleep mode.
Nonhomogeneous LDPC Codes and Their Application to Encrypted Communication (2011)

Given a parity check matrix (PCM) H, its associated low-density parity-check (LDPC) code is the solution space of the homogeneous system of linear equations Hx = 0. In this paper, we propose to adopt the solutions to Hx = b (a nonhomogeneous system of linear equations) as the code words, where b is a nonzero vector and is called the code's target syndrome. We use the term "nonhomogeneous LDPC (abbreviated as NH-LDPC) codes" to refer to the codes obtained this way. In particular, we propose a systematic NH-LDPC coding scheme. We show that the PCM needs to possess some properties for the systematic NH-LDPC encoding to work. The decoding of NH-LDPC codes is almost the same as the decoding of homogeneous (i.e. conventional) LDPC codes (i.e. by sum-product algorithm and iterative decoding), only with slight modification. As an example of practical application, we propose to use the NH-LDPC codes in encrypted data transmission, where the target syndrome b is used as the secret key (available only to legitimate users) for encryption and decryption. One problem is that, even without the knowledge of b, an illegitimate user can still demodulate a codeword's systematic part, albeit with a much higher error probability than legitimate ones. To counter this problem, a descrambler is incorporated at the receiver to magnify the effect of the errors from demodulation so that the illegitimate user can not obtain intelligible information content. Simulations show that the proposed joint coding-encryption scheme works well as long as the channel signal-to-noise ratio (SNR) is properly controlled to lie within a specific range.
Efficient Channel Estimation for MIMO Single-Carrier Block Transmission With Dual Cyclic Timeslot Structure (2007)

We investigate channel estimation for timeslot-structured single-carrier block transmission (SCBT) over space-, time-, and frequency-selective fading multiple-input multiple-output (MIMO) channels. A MIMO-SCBT with a dual cyclic timeslot structure is presented first. Then, an optimal channel estimation in the minimal mean square error (MMSE) sense on the timeslot basis is investigated. It is shown that the optimal pilots for the timeslot-based MMSE channel estimation are related to the statistical channel state information in eigenmode. Under the assumption that the transmit correlation is unknown at the transmitter, the optimal pilots satisfy the same condition as reported for the block-based least-square (LS) channel estimation in literature, and the channel estimation can be simplified to initial block-based LS channel estimation followed by space-time postprocessing. Particularly, for spatially uncorrelated channels, the space-time postprocessing can be reduced to pathwise processing. A new design of the pilot sequences is given, which leads to an efficient implementation of the channel estimation. Later on, a more efficient implementation for the initial channel estimation is obtained by using the structure of the pilot sequences, and discrete cosine transform (DCT)-based implementation is developed for the space-time postprocessing to approximate the optimal solution with low implementation complexity. Finally, the performance of the proposed channel estimation is verified via simulations.
The Importance of Perovskite Pore Filling in Organometal Mixed Halide Sensitized TiO<sub>2</sub>-Based Solar Cells (2014)

Emerging from the field of dye-sensitized solar cells, organometal halide perovskite-based solar cells have recently attracted considerable attention. In these devices, the perovskite light absorbers can also be used as charge transporting materials, changing the requirements for efficient device architectures. The perovskite deposition can vary from merely sensitizing the TiO2 electron transporting scaffold as an endowment of small nanoparticles, to completely filling the pores where it acts as both light absorber and hole transporting material in one. By decreasing the TiO2 scaffold layer thickness, we change the solar cell architecture from perovskite-sensitized to completely perovskite-filled. We find that the latter case leads to improvements in device performance because higher electron densities can be sustained in the TiO2, improving electron transport rates and photovoltage. Importantly, the primary recombination pathway between the TiO2 and the hole transporting material is blocked by the perovskite itself. This understanding helps to rationalize the high voltages attainable on mesoporous TiO2-based perovskite solar cells.
An intelligent trend prediction and reversal recognition system using dual-module neural networks (2002)

Short-term trends of price movement for common stocks traded on the Taiwan stock market have been modelled and predicted using the dual-module neural networks (dual net) proposed. Both neural network modules of the dual net learn the correlations between the trends of price movement and the retrospective technical indices. An adaptive reversal recognition mechanism which can self-tune the threshold to identify the buying or selling signals is developed in the system. Due to the features of acceptable returns, high hit ratio and low risks shown in the performance evaluation, an intelligent stock trend prediction and reversal recognition system can be realized using the dual-module neural networks.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Compositions and Properties of Pyrochlore-Type Oxides for Air Electrode in Secondary Cells (2008)

The electrochemical properties of pyrochlore-type oxides have been examined to develop the new catalyst for the air electrode of secondary cells. The electrode with Bi2Ir2O7-z catalyst could reduce the overpotential for the oxygen reduction. By substituting with manganese for the B site of Bi2Ir2O7-z catalyst, Bi2Ir2-yMnyO7-z (y=0.3, 0.5, 1), the overpotential for the oxygen reduction reduced at the high current densities. Bi2Mn2O7-z catalyst may possess the ability for the oxygen reduction, even though this catalyst contains no iridium. The lifetime of the air electrodes with Bi2Ir2-yMnyO7-z catalysts became shorter than that with Bi2Ir2O7-z catalyst.
Molecular Mechanisms of Plant Regeneration (2019)

Plants reprogram somatic cells following injury and regenerate new tissues and organs. Upon perception of inductive cues, somatic cells often dedifferentiate, proliferate, and acquire new fates to repair damaged tissues or develop new organs from wound sites. Wound stress activates transcriptional cascades to promote cell fate reprogramming and initiate new developmental programs. Wounding also modulates endogenous hormonal responses by triggering their biosynthesis and/or directional transport. Auxin and cytokinin play pivotal roles in determining cell fates in regenerating tissues and organs. Exogenous application of these plant hormones enhances regenerative responses in vitro by facilitating the activation of specific developmental programs. Many reprogramming regulators are epigenetically silenced during normal development but are activated by wound stress and/or hormonal cues.
Fibronectin and laminin enhance gingival cell attachment to dental implant surfaces in vitro. (1996)

The objective of this study was to determine if the biologically active molecules laminin and fibronectin could influence gingival cell attachment to implant surfaces in vitro. Flat squares of the following implant materials were tested: smooth, plasma-sprayed, and hydroxyapatite-coated titanium. The surfaces were coated with equimolar quantities of either laminin, fibronectin, or bovine serum albumin. Fibronectin coating of implant surfaces resulted in two to three times the enhancement of gingival fibroblast binding on all implant surfaces tested (P < .01), with a lesser effect on epithelial cells. Laminin coating resulted in three to four times the enhancement of gingival epithelial cell binding on all implant surfaces tested (P < .01), with a lesser effect on fibroblasts. The two cell types exhibited distinct preferences for the different molecules tested with the surface roughness having some influence.
A buccal mucosa carcinoma treated with high dose rate brachytherapy (2005)

This manuscript presents a case of early stage squamous cell carcinoma of the left buccal mucosa treated with intensity-modulated radiation therapy (IMRT) followed by a high-dose rate (HDR) brachytherapy boost. With limited literature available on HDR mold (stent) radiotherapy for oral cancer, a discussion on the issues encountered during treatment planning and delivery may prove to be insightful for facilities faced with a similar challenge.
Reversible Solid Oxide Fuel Cell Technology for Green Fuel and Power Production (2013)

Sustainable energy system based on the reversible solid oxide fuel cell (RSOFC), which is a device that can operate efficiently in both fuel cell and electrolysis operating modes, is feasible for the future. In the fuel cell mode, an RSOFC functions as a solid oxide fuel cell, generating electricity by electrochemical combination of a fuel (hydrogen, hydrocarbons, alcohols, etc.) with air. In the electrolysis mode, it functions as an electrolyzer, producing hydrogen or chemicals such as syngas when coupled with an energy source. The RSOFC is at its early stage of development and to date, only limited work mainly in lab scale has been conducted. Two key requirements for RSOFCs are (1) acceptable electrode performance reversibility and stability and (2) efficient and stable cyclic operation. RSOFC technology is further discussed in this article.
Integrating data from 3D CAD and 3D cameras for Real-Time Modeling (2006)

In a reversal of historic trends, the capital facilities industry is expressing an increasing desire for automation of equipment and construction processes. Simultaneously, the industry has become conscious that higher levels of interoperability are a key towards higher productivity and safer projects. In complex, dynamic, and rapidly changing three-dimensional (3D) environments such as facilities sites, cutting-edge 3D sensing technologies and processing algorithms are one area of development that can dramatically impact those projects factors. New 3D technologies are now being developed, with among them 3D camera. The main focus here is an investigation of the feasibility of rapidly combining and comparing – integrating – 3D sensed data (from a 3D camera) and 3D CAD data. Such a capability could improve construction quality assessment, facility aging assessment, as well as rapid environment reconstruction and construction automation. Some preliminary results are presented here. They deal with the challenge of fusing sensed and CAD data that are completely different in nature.
Ongoing Face Recognition Vendor Test (FRVT) part 6B : (2020)

This is the second of a series of reports on the performance of face recognition algorithms on faces occluded by protective face masks commonly worn to reduce inhalation and exhalation of viruses. This is a continuous study is being run under the Ongoing Face Recognition Vendor Test (FRVT) executed by the National Institute of Standards and Technology (NIST). In our first report, we tested "pre-pandemic" algorithms that were already submitted to FRVT 1:1 prior to mid-March 2020. This report augments its predecessor with results for more recent algorithms provided to NIST after the COVID-19 pandemic was declared. While we do not have information on whether or not a particular algorithm was designed with face coverings in mind, the results show evidence that a number of developers have adapted their algorithms to support face recognition on subjects potentially wearing face masks. The algorithms tested were one- to-one algorithms submitted to the FRVT 1:1 Verification track. Future editions of this document will also report accuracy of one-to- many algorithms.
Reformist Reforms, Non-Reformist Reforms and Global Justice: Activist, NGO and Intellectual Challenges in the World Social Forum (2008)

The author reflects on his involvement with the World Social Forum (WSF), the annual meeting held by members of the anti-globalization or alter-globalization movement, held in Nairobi, Kenya because he participated in the preliminary planning. As a social scientist, he reflects on the forum's significance in global society and vis-a-vis global capitalism. He also explores the debate in South Africa over the merits of WSF.
GC-MS Evaluation of Phenolic Compounds in Virgin Olive Oil (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGC-MS Evaluation of Phenolic Compounds in Virgin Olive OilFranca Angerosa, Nicola d'Alessandro, Panajotis Konstantinou, and Luciana Di GiacintoCite this: J. Agric. Food Chem. 1995, 43, 7, 1802–1807Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 July 1995https://pubs.acs.org/doi/10.1021/jf00055a010https://doi.org/10.1021/jf00055a010research-articleACS PublicationsRequest reuse permissionsArticle Views2444Altmetric-Citations155LEARN 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
Role of a single amino acid at the amino terminus of the simian virus 5 F2 subunit in syncytium formation (1997)

The fusion (F) protein of simian virus 5 (strain W3A) induced extensive cell fusion in BHK cells when expressed alone, while that of strain WR did not. Mutational analysis demonstrated that the fusing activity can be transferred to the WR F protein by a proline residue at position 22 of subunit W3A F2.
Thin layer chromatography matrix assisted laser desorption ionisation mass spectrometry of pharmaceutical compounds. (2002)

Available from British Library Document Supply Centre- DSC:DXN053762 / BLDSC - British Library Document Supply Centre
Thermal stability studies on some metal soaps of Hura crepitans seed oil. (2011)

Thermal stability studies on some metal soaps of Hura crepitans seed oil prepared by metathesis in aqueous alcohol solution were carried out. The kinetics of the decomposition was studied thermogravimetrically in the temperature range 160 – 200 C. The values of the rate constant are of the order 10min and temperature-dependent. The enthalpy of activation (∆H) of the initial stage of decomposition determined is in the range 9.8 – 37.8 kJmol. The thermal stability of the metal soaps was studied in the temperature range 50 – 600 C under nitrogen using thermogravimetric analyzer (TGA). The thermal stability of the soaps was assessed in terms of temperatures at which various extents of decomposition were attained and weight loss at the initial stage of decomposition. Except zinc soap, the weight loss for the metal soaps was less than 10% at temperature up to 250 C. The results suggest that the metal soaps Hura crepitans seed oils could have some industrial applications.
Unreasonable Rationality? (1995)

This paper explores how fractional demands (the optimal fraction of wealth invested in a security) change upon exogenous changes in security returns and wealth. In the first part of the paper, the analysis is conducted in an Arrow-Debreu framework. Here we demonstrate the counterintuitive but completely rational result that fractional demands can remain unchanged or in fact decrease upon an exogenous increase in return. Furthermore, we show that this can occur without any offsetting wealth effect. In the second part of the paper, we apply these results to ordinary securities (those composed of fixed portfolios of Arrow-Debreu securities). Here we derive a complete analytical solution and show that portfolio managers should beware. Even correct information that the return from holding an underlying pure security will improve is not sufficient to conclude that one should increase (or decrease) one's holdings of any particular stock.
Emergence of Autologous Neutralization‐Resistant Variants from Preexisting Human Immunodeficiency Virus (HIV) Quasi Species during Virus Rebound in HIV Type 1–Infected Patients Undergoing Highly Active Antiretroviral Therapy (2002)

The role of neutralizing antibodies (NAbs) during virus rebound in human immunodeficiency virus type 1 (HIV-1)-infected patients undergoing highly active antiretroviral therapy is poorly understood. Three patients in this study had NAbs to preexisting autologous HIV-1 and an episode of virus rebound after a prolonged period of virus suppression. To investigate the influence of NAbs on virus evolution, envelope genotypes of preexisting and rebound viruses were examined. Phylogenetic analysis of env (V1-V5) sequences indicated that rebound viruses had evolved from or preexisted in baseline populations. By use of envelope pseudotype viruses, rebound viruses were found to be significantly resistant to neutralization by autologous antibody in all 3 patients, indicating that rebound viruses were selected by NAbs. The site responsible for conferring neutralization resistance against autologous antibody was identified in the upstream C3 region in 2 of 3 patients.
COATING FOR AN UNDERWATER ACTIVE ACOUSTIC ATTENUATION CONTROL SYSTEM (1990)

A multilayer encapsulated coating has been developed for underwater acoustic attenuation purposes. This coating provides an option for electronically activating encapsulated piezoelectric devices to increase the coatings passive sound attenuation performance through active control methods. These methods include the ability to sense the incident and reflected acoustic pressure field and produce a counter destructive interference acoustic pressure wave for sound cancellation. Experimental results are presented from measurements conducted in a water filled pulse tube for normally incident acoustic waves.
Recent Trends in Driver Safety Monitoring Systems: State of the Art and Challenges (2016)

Driving in busy highways and roads is becoming complex and challenging, as more cars are hitting the roads. Safe driving requires attentive drivers, quality perception of the environment, awareness of the situation, and critical decision making to react properly in emergency situations. This paper provides an overview on driver safety monitoring systems. We study various driver sources of inattention while providing a comprehensive taxonomy. Then, different safety systems that tackle driver inattention are reported. Furthermore, we present the new generation of driver monitoring systems within the context of Internet of Cars. Thus, we introduce the concept of integrated safety, where smart cars collect information from the driver, the car, the road, and, most importantly, the surrounding cars to build an efficient environment for the driver. We conclude by highlighting issues and emerging trends envisioned by the research community.
First Experience with CarTorrent in a Real Vehicular Ad Hoc Network Testbed (2007)

Content sharing using cooperative peer-to-peer model has become increasingly more popular in a vehicular ad hoc network (VANET). The small transmission window from a vehicle to an access point (AP), high mobility of vehicles, and intermittent and short-lived connectivity to an AP provide incentives for vehicles to cooperate with one another to obtain information from the Internet. These characteristics of VANETs naturally stipulate the use of cooperative peer-to-peer paradigm and motivate related content sharing application such as CarTorrent. Building upon previous research on SPAWN [6, 1], we have implemented CarTorrent and deployed it on a real VANET. We have run extensive field tests to affirm the feasibility of the peer-to-peer file sharing application tailored to VANET. To the best of our knowledge, the deployment of such a content sharing application on a real vehicular ad hoc testbed is the first of its kind.
Method to convert Kinect's 3D depth data to a 2D map for indoor SLAM (2013)

Mobile robotics has been strongly linked to localization and mapping especially for navigation purpose. A robot needs a sensor to see objects around it, avoid them and also map the surrounding area. The use of 1D and 2D proximity sensors such as ultrasonic sensor, sonar and laser range finder for area mapping is believed to be less effective since they do not provide information in Y or Z (horizontal and vertical) direction. The robot may miss an object due to its shape and position; thus increasing the risk of collision as well as inaccurate map. In this paper, a 3D visual device particularly Microsoft Kinect was used to perform area mapping. The 3D depth data from the device's depth sensor was retrieved and converted into 2D map using the presented method. A Graphical User Interface (GUI) was also implemented on the base station to depict the real-time map. It was found that the method applied has successfully mapped the potentially missing objects when using 1D or 2D sensor. The convincing results shown in this paper suggest that the Kinect is suitable for indoor SLAM application given that the device's limitations are solved.
Localization of electrical defects in system in package devices using Lock-in Thermography (2010)

The paper deals with demonstration of Lock-in Thermography (LIT) as a new key-method for the defect localization in modern microelectronic devices. After an introduction into the operational principle and recent advantages of LIT, three different case studies for defect localization at multi-chip, flip-chip, and stacked die devices will be presented followed by physical root cause analysis, using mechanical cross sectioning and SEM investigations.
X-ray lithography with a Ag-Se/Ge-Se inorganic resist using synchrotron radiation (1988)

A Ag-Se/Ge-Se inorganic resist is applied in x-ray lithography using synchrotron radiation (SR). Usable sensitivity of 0.3–3 times that of a polymethylmethacrylate (PMMA) resist and high contrast (γ∼3.5) are obtained through SR exposures. By utilizing the fringes of masked SR flux caused by Fresnel diffraction, 500-Å-wide fine lines are formed by using x rays of 2–10 Å in wavelength. It is determined that a high-density resist, such as a Ag-Se/Ge-Se inorganic resist, is favorable for forming micropatterns using x rays because of the short ranges of the electrons generated by the x rays in the resist.