gebhart/patrepeval huggingface dataset:
Space–Time Coding MIMO-OFDM SAR for High-Resolution Imaging (2011)

Multiple-input and multiple-output (MIMO) radar has received renewed attention in recent years, but little work on MIMO synthetic aperture radar (SAR) remote sensing has been reported. This paper presents a scheme of space-time coding MIMO orthogonal frequency division multiplexing (OFDM) SAR for high-resolution imaging. This system employs MIMO configuration in the elevation direction and the Alamouti space-time coding scheme in the azimuth direction, along with the use of OFDM waveform diversity and displaced phase center antenna (DPCA) techniques. As an orthogonal transmission waveform is required for this novel space-time coding MIMO-OFDM SAR system, one kind of OFDM linearly frequency modulated waveforms is investigated. The matched filtering and multibeam forming in the elevation direction are detailed. Additionally, the corresponding mathematical relations and signal models for high-resolution imaging are formed. In this way, efficient spatial diversity gain and improved range resolution are obtained by the MIMO configuration, and the requirement of pulse repeated frequency for wide-swath remote sensing is reduced by the DPCA technique. The feasibility is validated by numerical simulation results.
Sticking under Wet Conditions: The Remarkable Attachment Abilities of the Torrent Frog, Staurois guttatus (2013)

Tree frogs climb smooth surfaces utilising capillary forces arising from an air-fluid interface around their toe pads, whereas torrent frogs are able to climb in wet environments near waterfalls where the integrity of the meniscus is at risk. This study compares the adhesive capabilities of a torrent frog to a tree frog, investigating possible adaptations for adhesion under wet conditions. We challenged both frog species to cling to a platform which could be tilted from the horizontal to an upside-down orientation, testing the frogs on different levels of roughness and water flow. On dry, smooth surfaces, both frog species stayed attached to overhanging slopes equally well. In contrast, under both low and high flow rate conditions, the torrent frogs performed significantly better, even adhering under conditions where their toe pads were submerged in water, abolishing the meniscus that underlies capillarity. Using a transparent platform where areas of contact are illuminated, we measured the contact area of frogs during platform rotation under dry conditions. Both frog species not only used the contact area of their pads to adhere, but also large parts of their belly and thigh skin. In the tree frogs, the belly and thighs often detached on steeper slopes, whereas the torrent frogs increased the use of these areas as the slope angle increased. Probing small areas of the different skin parts with a force transducer revealed that forces declined significantly in wet conditions, with only minor differences between the frog species. The superior abilities of the torrent frogs were thus due to the large contact area they used on steep, overhanging surfaces. SEM images revealed slightly elongated cells in the periphery of the toe pads in the torrent frogs, with straightened channels in between them which could facilitate drainage of excess fluid underneath the pad.
A Microfabricated Nanoreactor for Safe, Continuous Generation and Use of Singlet Oxygen (2002)

Singlet oxygen was effectively and safely generated in a nanoscale reactor and used for the synthesis of ascaridole. The technique allows for the generation of singlet oxygen without the inherent dangers of large quantities of oxygenated solvents. The methodology allows for facile scale-out of the process.
On the Design Details of SS/PBCH, Signal Generation and PRACH in 5G-NR (2020)

The 3rd Generation Partnership Project (3GPP) specification of the fifth generation (5G) New Radio (NR) allows for a highly scalable and flexible radio access technology to cater to network operators with different requirements. Such scalability and flexibilities in network configurations inevitably translate to complications in the design and implementation of 5G-NR systems. Radio access in 5G-NR is much more complex and involved than its predecessor, 4G long term evolution (LTE) and LTE-Advanced technology. Therefore, the 5G-NR specifications turn out to be quite dense. Specifically, the specifications are concise, design motivations rarely explained, and the information can be convoluted or distributed across several documents. Moreover, there are several key design details associated with the access layer procedures for any given physical layer channel, which are often omitted in the specifications. For example, design motivation aspects of initial access channels or signal generation can be quite difficult to follow or understand in 5G-NR. In this paper, all the design details associated with initial access channels and signal generation in 5G-NR specifications are laid out. The contributions of the paper are three folds. First, the design details and justifications associated with both downlink and uplink access channels are presented along with signal generation details. Secondly, receiver design aspects of NR PRACH short formats are discussed. Lastly, PRACH receiver implementation aspects and performance reports from different network operators are presented and compared with 3GPP specified Radio Performance and Protocol aspect requirements for millimeter wave (mmW) access. The work in this paper is of significant value to researchers and system engineers looking to design and build initial access algorithms as part of 5G NR systems.
Droplets Manipulated on Photothermal Organogel Surfaces (2018)

Abstract A photoresponsive organogel surface (POS), which integrates characteristics of the photothermal property of Fe 3 O 4 nanoparticles and the low hysteresis feature of lubricant‐infused organogels, is shown. A photothermally induced dynamic temperature gradient can be formed rapidly at the location of near‐infrared‐light irradiation (NIR) on POS with suitable Fe 3 O 4 nanoparticles content. Thus, various droplets (e.g., water, glycerol, ethylene glycol, propylene glycol, and ethanol) can be transported effectively and nimbly (e.g., along desired trajectories with controllable velocity and direction, even run uphill and deliver solid particles). This work reveals a synergistic effect between the asymmetrical droplet deformation and the inside Marangoni flows, which forms a unique driving force for droplet transport with high efficiency. This finding offers insight into the design of novel responsive interface materials for droplet transportation, which would be significant for laboratory‐on‐a‐chip contexts, mass transportation, and microengines.
Synthesis of novel sulfonamide azoles via C–N cleavage of sulfonamides by azole ring and relational antimicrobial study (2015)

Novel sulfonamide azoles were synthesized<italic>via</italic>the C–N cleavage of sulfonamides by an azole ring, and evaluated for their relational antimicrobial behaviors.
Surface modification and characterization of chitosan or PLGA membrane with laminin by chemical and oxygen plasma treatment for neural regeneration (2007)

Attachment to and proliferation on the substrate are deemed important considerations when Schwann cells (SCs) are to be seeded in synthetic nerve grafts. Good attachment is a prerequisite for the SCs to survive. Fast proliferation will yield large numbers of SCs in a short time, which appears to be promising for stimulating peripheral nerve regeneration. However, surface properties are the dominating factor in influencing the interactions between cells and synthetic nerve grafts. The aim of this study was to investigate the surface effects of laminin modified PLGA and chitosan membranes after chemical method and plasma treatment. Laminin, the extracellular matrix protein, is a permissive protein for SCs adhesion used in neural regeneration. The surface properties of laminin modified membranes were assayed by BCA, FTIR and XPS analysis. Results showed that laminin was covalently bonded onto the surface of both PLGA and chitosan membranes either by chemical method or by oxygen plasma treatment. The cell affinity of the laminin modified membranes was verified by Schwann cells culturing. Our results also indicate that oxygen plasma is indeed a better method to incorporate laminin onto the surface of membrane. Laminin-modified chitosan membrane significantly increases SCs attachment and affinity for directing peripheral nerve regeneration.
Kinetics of dehydrogenation of methylcyclohexane over a platinum-rhenium-alumina catalyst in the presence of added hydrogen (1985)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of dehydrogenation of methylcyclohexane over a platinum-rhenium-alumina catalyst in the presence of added hydrogenK. Jothimurugesan, Subhash Bhatia, and Rameshwar D. SrivastavaCite this: Ind. Eng. Chem. Fundamen. 1985, 24, 4, 433–438Publication Date (Print):November 1, 1985Publication History Published online1 May 2002Published inissue 1 November 1985https://doi.org/10.1021/i100020a006RIGHTS & PERMISSIONSArticle Views1091Altmetric-Citations31LEARN 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 InReddit PDF (672 KB) Get e-Alerts
Complaints from emergency department patients largely result from treatment and communication problems (2002)

Communication remains a significant factor in emergency department patient dissatisfaction. While patient complaints have resulted in major changes to policy and procedure, research and intervention strategies into communication problems are indicated. In the short term, focused staff training is recommended.
Interconnect exploration for future wire dominated technologies (2002)

Storage "takes the centre stage" [4] in more and more information oriented systems because of the eternal push for more complex applications with especially larger and more complicated data types. In addition, the access speed, size and power consumption associated with this storage form a severe bottle-neck in these systems (especially in an embedded context). In this invited paper, we want to explore the interconnect related issues, both inside the storage components (intra-memory) and between the components (inter-memory). To achieve this we have performed several experiments with a storage organisation exploration tool set that has been applied to a real-life application from our target domain, namely a Digital Audio Broadcast (DAB) receiver. Several interesting conclusions can be based on these experiments and these will be briefly summarised below.
Permissive proteolytic activity for visual cortical plasticity (2002)

The serine protease, tissue-type plasminogen activator (tPA) is a key regulator of extracellular proteolytic cascades. We demonstrate a requirement for tPA signaling in the experience-dependent plasticity of mouse visual cortex during the developmental critical period. Proteolytic activity by tPA in the binocular zone was typically increased within 2 days of monocular deprivation (MD). This regulation failed to occur in glutamic acid decarboxylase (GAD) 65 knockout mice, an animal model of impaired ocular dominance plasticity because of reduced gamma-aminobutyric acid (GABA)-mediated transmission described previously. Loss of responsiveness to the deprived eye consequent to MD was conversely suppressed in mice lacking tPA despite normal levels of neuronal activity. Plasticity was restored in a gene dose-dependent manner, or by direct tPA infusion. Permissive amounts of tPA may, thus, couple functional to structural changes downstream of the excitatory-inhibitory balance that triggers visual cortical plasticity. Our results not only support a molecular cascade leading to neurite outgrowth after sensory deprivation, but also identify a valuable tool for further proteomic and genomic dissection of experience-dependent plasticity downstream of electrical activity.
External cavity quantum cascade lasers with ultra rapid acousto-optic tuning (2015)

We report operation of tunable external cavity quantum cascade lasers with emission wavelength controlled by an acousto-optic modulator (AOM). A long-wave infrared quantum cascade laser wavelength tuned from ∼8.5 μm to ∼9.8 μm when the AOM frequency was changed from ∼41MHz to ∼49 MHz. The laser delivered over 350 mW of average power at the center of the tuning curve in a linewidth of ∼4.7 cm−1. Measured wavelength switching time between any two wavelengths within the tuning range of the QCL was less than 1 μs. Spectral measurements of infrared absorption features of Freon demonstrated a capability of obtaining complete spectral data in less than 20 μs.
Determination of the selenium (VI)/(IV) standard redox potential by cyclic voltammetry (2013)

An electrochemical investigation of selenium, using cyclic voltammetry, has been carried out to determine the standard redox potential of the following reaction: The Se(VI)/(IV) half-wave potentials were measured in alkaline sodium perchlorate solutions as a function of molality of a sodium ion. Extrapolation of the experimental data to the standard state using specific ion interaction theory yields the following standard redox potential and ion interaction coefficients:
Data Management for an Integrated Computational Environment. (1997)

Abstract : In this report we are concerned with establishing a framework for an intelligent information processing paradigm for USAF weapon system development and maintenance. This involves the intelligent processing of data, knowledge, and information. Our goal is to design and develop a data management structure which will automate portions of this process. This approach will be prototyped and demonstrated using an actual system as related to reliability and electromagnetic sciences. The need for this work is evidenced by many factors. Technology is changing at an accelerated rate. The technology 'know how' and expertise of many people are disappearing within corporations because of downsizing, acquisitions, and early retirements. Managing of information is important throughout the USAF. We must capture and harness information and obtain knowledge on a daily basis. If we lose information through the loss of people or poor documentation then we may be the victims of recreating the past with additional expense. We must capture the data, knowledge, and information and process it in an intelligent manner. The USAF is changing how it acquires, builds and maintains its weapon systems. It is not immune to information, inaccurate data, and 'cloudy' knowledge. This report and the work that flows from it will result in a better and more efficient way to survive in this information driven world.
Tyrosyl-DNA phosphodiesterase (Tdp1) participates in the repair of Top2-mediated DNA damage (2006)

Agents targeting topoisomerases are active against a wide range of human tumors. Stabilization of covalent complexes, converting topoisomerases into DNA-damaging agents, is an essential aspect of cell killing by these drugs. A unique aspect of the repair of topoisomerase-mediated DNA damage is the requirement for pathways that can remove protein covalently bound to DNA. Tyrosyl-DNA phosphodiesterase (Tdp1) is an enzyme that removes phosphotyrosyl moieties bound to the 3' end of DNA. Cells lacking Tdp1 are hypersensitive to camptothecin, consistent with a role for Tdp1 in processing 3' phosphotyrosyl protein-DNA covalent complexes. Because Top2p forms a 5' phosphotyrosyl linkage with DNA, previous work predicted that Tdp1p would not be active against lesions involving Top2p. We found that deletion of the TDP1 gene in yeast confers hypersensitivity to Top2 targeting agents. Combining tdp1 mutations with deletions of genes involved in nonhomologous end joining, excision repair, or postreplication repair enhanced sensitivity to Top2 targeting drugs over the level seen with single mutants, suggesting that Tdp1 may function in collaboration with multiple pathways involved in strand break repair. tdp1 mutations can sensitize yeast cells to drugs targeting Top2 even when TOP1 is deleted. Finally, bacterially expressed yeast Tdp1p is able to remove a peptide derived from yTop2 that is covalently bound to DNA by a 5' phosphotyrosyl linkage. Our results show that Tdp1 plays more general roles in DNA repair than repair of Top1 mediated DNA damage, and may participate in repairing many types of base damage to DNA.
<title>Yield modeling and enhancement for optical lithography</title> (1995)

A method is presented for predicting the CD limited yield of a photolithographic process using well established lithography modeling tools. the lithography simulator PROLITH/2 is used to generate several multivariable process response spaces (for example, final resist critical dimension (CD) versus focus, exposure, resist thickness, etc.). Error distributions are determined for each input variable. By correlating the input error distribution with the process response space, a final CD distribution is generated. Analysis of the output distribution produces a predicted parametric CD yield. By analyzing predicted CD yield for multiple geometries, a yield curve (yield vs. feature size) is determined for an i-line process. By comparing CD yield for different nominal exposure doses, a yield-exposure curve is calculated for an i-line process.
The myth of empowerment (1992)

Vice President, Patient Care Services, Baptist Medical Center of Oklahoma, Inc Oklahoma City, Oklahoma
Absolute absorption cross sections of ozone in the 185‐ to 350‐nm wavelength range (1986)

The absorption cross sections of ozone have been measured in the wavelength range 185–350 nm and in the temperature range 225–298 K. The absolute ozone concentrations were established by measuring the pressure of pure gaseous samples in the 0.08‐ to 300‐torr range, and the UV spectra were recorded under conditions where less than 1% of the sample decomposed. The temperature dependence is significant for wavelengths longer than ∼280 nm. The absorption cross‐section values around 210 nm were found to be about 10% larger than the previously accepted values.
Dynamics and structure development during high‐speed melt spinning of nylon 6. II. Mathematical modeling (1991)

Abstract A mathematical model of the melt spinning process that includes crystallization has been used to compute the velocity, diameter, temperature, and birefringence as a function of distance from the spinneret. An improved inversion procedure is described and is shown to give better results for the computed apparent elongational viscosity and heat‐transfer coefficient data. The computed profiles have been compared directly to the experimental profiles determined earlier and reported in Part I of this paper. The results show that the model describes the major features of the melt spinning process. The reasons for the observed differences between experimental profiles and those computed from the model are discussed.
A system for extracting and representing feature information driven by the application context (2002)

The system described works in two steps. The first step starts from a boundary model of an object and identifies the generic shape features by considering only geometric and topological aspects. These features are divided into two general classes, protrusions and depressions, extracted as solid volumes, and arranged in a multilevel structure. This representation, called shape-feature object graph (SFOG), is capable of representing the recursive decomposition of an object in its main shape and the set of its form features (possibly compound). The SFOG is a hierarchical and relational boundary model represented by a graph in which the root component nodes correspond to the boundary representation of the main shape, while the other nodes correspond to the boundary representations of features; arcs between nodes define parent-child relations between components. In the second step, the identified features are classified according to the functional meaning in the application context. Thus, the hierarchical representation is reorganized by gluing and/or grouping sets of shape features which are functionally related in the context considered.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The stress at which dislocations are generated at a particle-matrix interface (1969)

Abstract When a hydrostatic pressure is applied to a metal containing particles or inclusions of different elastic constant, the local shear stresses which develop can be large enough to cause the interface between the particle and the metal matrix to emit dislocations. We have measured the pressure (from which we calculate the local shear stresses) at which dislocations are first generated at SiO2 and Al2O3 particles in a copper matrix at room temperature. The critical pressure, and thus shear stress, depends on the particle size. The maximum shear stress at the particle surface was about G/100 for 2000 Å diameter particles, rising to G/40 for 1000 Å diameter particles, where G is the shear modulus of the metal matrix.
Reactions of Atoms and Free Radicals in Solution. IV. Decomposition of Acetyl Peroxide in Aliphatic Acids—A New Synthesis of Succinic Acid and its Substitution Derivatives (1943)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of Atoms and Free Radicals in Solution. IV. Decomposition of Acetyl Peroxide in Aliphatic Acids—A New Synthesis of Succinic Acid and its Substitution DerivativesM. S. Kharasch and Matthew T. GladstoneCite this: J. Am. Chem. Soc. 1943, 65, 1, 15–17Publication Date (Print):January 1, 1943Publication History Published online1 May 2002Published inissue 1 January 1943https://pubs.acs.org/doi/10.1021/ja01241a005https://doi.org/10.1021/ja01241a005research-articleACS PublicationsRequest reuse permissionsArticle Views192Altmetric-Citations49LEARN 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