gebhart/patrepeval huggingface dataset:
The Effective Group Key Agreement Protocol for Ad-Hoc Networks for Medical Emergency Environments (2006)

In a medical emergency case, the secure communication between medical team members is very important, though the medical emergence service is conducted with no communication infra. An ad-hoc network can be a good solution to support the group communication with no infra structure such as the communication between medical team members. A group key agreement is a process to share a group key among a group, with each one's contribution. Ad-hoc network is a network serving peep-to-peer communication between nodes without infrastructures. A node in ad-hoc network leaves and joins willingly. Therefore, ad-hoc network has dynamic topology inherently. Nodes in ad-hoc network have constrained computing power and limited battery. To secure a group communication in ad-hoc network environment, some thoughts for efficient group key agreement mechanism must be given to constrained computing power, lack of trusted entity. While many of group key agreement protocols which have been studied before are expensive to be adapted in ad-hoc network, lack of security proof, assuming all nodes have the same computing power which is not in reality. With this consideration, we present a secure group key agreement protocol for ad-hoc network for medical emergency environments
COMBUSTION AND THERMAL DECOMPOSITION OF FLUORINATED POLYMERS (2006)

International audience
Signal Processing in Noise Waveform Radar (2013)

This book is devoted to the emerging technology of noise waveform radar and its signal processing aspects. It is a new kind of radar, which use noise-like waveform to illuminate the target. The book includes an introduction to basic radar theory, starting from classical pulse radar, signal compression, and wave radar. The book then discusses the properties, difficulties and potential of noise radar systems, primarily for low-power and short-range civil applications. The contribution of modern signal processing techniques to making noise radar practical are emphasized, and application examples
Simulative assessments of the IEEE 802.15.4 CSMA/CA with Priority Channel Access in structural health monitoring scenarios (2017)

Recently, wireless sensor networks (WSNs) are emerging in various application fields thanks to their low cost and ease of deployment. In particular, the rapid increase of critical monitoring applications encourages the study and evaluation of wireless communication protocols that can fulfill the requirements of such applications. Among the WSN standards, the IEEE 802.15.4 is very promising, as it provides critical messages with the support for prioritized channel access through the Priority Channel Access mechanism. The paper assesses the behavior of an IEEE 802.15.4 wireless sensor network implementing the Priority Channel Access mechanism in a realistic monitoring scenario, focusing on the impact on critical message transmissions. The assessments are based on OMNeT++ simulations.
Brown adipose tissue uncoupling protein content in human infants, children and adults (1986)

A solid-phase radioimmunoassay is described for the estimation of the uncoupling protein content of human brown adipose tissue mitochondria, as an index of thermogenic capacity. The concentration of inner mitochondrial membrane uncoupling protein was measured in brown adipose tissue samples from 48 individuals who died suddenly. The uncoupling protein content of axillary adipose tissue was greater than that of perirenal adipose tissue. Variations in brown adipose tissue uncoupling protein content, which would be consistent with changing thermogenic requirements and capacity, were observed in different groups of subjects. Significantly lower concentrations were found in adults and in pre-term and stillborn infants than in older infants and children.
Two-Terminal Asymmetrical and Symmetrical Silicon Negative Resistance Switches (1959)

By making use of an emitter region shorted by a metallic contact to an adjacent base region, a new form of p-n-p-n switch is obtained. Several new structures are described, including a symmetrical (or ac) switch. Typical experimental results on switches which breakdown in the range from 25 to 40 v are presented.
Lightweight time synchronization for sensor networks (2003)

This paper presents lightweight tree-based synchronization (LTS) methods for sensor networks. First, a single-hop, pair-wise synchronization scheme is analyzed. This scheme requires the exchange of only three messages and has Gaussian error properties. The single-hop approach is extended to a centralized multi-hop synchronization method. Multi-hop synchronization consists of pair-wise synchronizations performed along the edges of a spanning tree. Multi-hop synchronization requires only n-1 pair-wise synchronizations for a network of n nodes. In addition, we show that the communication complexity and accuracy of multi-hop synchronization is a function of the construction and depth of the spanning tree; several spanning-tree construction algorithms are described. Further, the required refresh rate of multi-hop synchronization is shown as a function of clock drift and the accuracy of single-hop synchronization. Finally, a distributed multi-hop synchronization is presented where nodes keep track of their own clock drift and their synchronization accuracy. In this scheme, nodes initialize their own resynchronization as needed.
An Emerging Era in the Management of Parkinson's Disease: Wearable Technologies and the Internet of Things (2015)

Current challenges demand a profound restructuration of the global healthcare system. A more efficient system is required to cope with the growing world population and increased life expectancy, which is associated with a marked prevalence of chronic neurological disorders such as Parkinson's disease (PD). One possible approach to meet this demand is a laterally distributed platform such as the Internet of Things (IoT). Real-time motion metrics in PD could be obtained virtually in any scenario by placing lightweight wearable sensors in the patient's clothes and connecting them to a medical database through mobile devices such as cell phones or tablets. Technologies exist to collect huge amounts of patient data not only during regular medical visits but also at home during activities of daily life. These data could be fed into intelligent algorithms to first discriminate relevant threatening conditions, adjust medications based on online obtained physical deficits, and facilitate strategies to modify disease progression. A major impact of this approach lies in its efficiency, by maximizing resources and drastically improving the patient experience. The patient participates actively in disease management via combined objective device- and self-assessment and by sharing information within both medical and peer groups. Here, we review and discuss the existing wearable technologies and the Internet-of-Things concept applied to PD, with an emphasis on how this technological platform may lead to a shift in paradigm in terms of diagnostics and treatment.
SURFACE SCATTERING OF CONDUCTION ELECTRONS IN GOLD FILMS (1964)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation M. S. P. Lucas; SURFACE SCATTERING OF CONDUCTION ELECTRONS IN GOLD FILMS. Appl. Phys. Lett. 15 February 1964; 4 (4): 73–74. https://doi.org/10.1063/1.1753968 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioApplied Physics Letters Search Advanced Search |Citation Search
A Wireless and Real-Time Monitoring System Design for Car Networking Applications (2013)

We described a wireless and monitoring system to obtain several classes of vehicle data and send them to the server via General Packet Radio Service (GPRS) in real-time. These data are consisted by on-board diagnostic (OBD) which get from the vehicle’s OBD interface, Tire-Pressure Monitoring system (TPMS) and Global Positioning System (GPS). The main content of this paper is the hardware design of the system, especially RF modules and antennas.
Experimental application of extremum seeking on an axial-flow compressor (1998)

We show an application of the method of extremum seeking to the problem of maximizing the pressure rise in an axial flow compressor. First we apply extremum seeking to the Moore-Greitzer model and design a feedback scheme actuated through a bleed valve which simultaneously stabilizes rotating stall and surge and steers the system towards the equilibrium with maximal pressure. Then we implement the scheme on a compressor rig in Richard Murray's laboratory at the California Institute of Technology. We perform stabilization of rotating stall via air injection and implement extremum seeking through a slow bleed valve. The experiment demonstrates that extremum seeking ensures the maximization of the pressure rise starting on either side of the stall inception point. The experiment also resolves a concern that extremum seeking requires the use of periodic probing-the amplitude of probing needed to achieve convergence is far below the noise level of the compressor system (even outside rotating stall).
Optimization of Regular Expression Pattern Matching Circuits on FPGA (2006)

Regular expressions are widely used in network intrusion detection system (NIDS) to represent patterns of network attacks. Since traditional software-only NIDS cannot catch up to the speed advance of networks, many previous works propose hardware architectures on FPGA to accelerate attack detection. The challenge of hardware implementation is to accommodate the regular expressions to FPGAs of the large number of attacks. Although the minimization of logic equations has been studied intensively in the CAD area, the minimization of multiple regular expressions has been largely neglected. This paper presents an architecture allowing our algorithm to extract and share common sub-regular expressions. Experimental results show that our sharing scheme significantly reduces the area of regular expression circuits
Horseradish Peroxidase Mediated Free Radical Polymerization of Methyl Methacrylate (2000)

This paper reports the free radical polymerization of methyl methacrylate (MMA) catalyzed by horseradish peroxidase (HRP). A novel method was developed whereby MMA polymerization can be carried out at ambient temperatures in the presence of low concentrations of hydrogen peroxide and 2,4-pentanedione in a mixture of water and a water-miscible solvent. Polymers of MMA formed were highly stereoregular with predominantly syndiotactic sequences (syn-dyad fractions from 0.82 to 0.87). Analyses of the chloroform-soluble fraction of syndio-PMMA products by GPC showed that they have number-average molecular weights, Mn, that range from 7500 to 75,000. By using 25% v/v of the cosolvents dioxane, tetrahydrofuran, acetone, and dimethylformamide, 85, 45, 7 and 2% product yields, respectively, resulted after 24 h. Increasing the proportion of dioxane to water from 1:3 to 1:1 and 3:1 resulted in a decrease in polymer yield from 45 to 38 and 7%, respectively. Increase in the enzyme concentration from 70 to 80 and 90 mg/mL resulted in increased reaction kinetics. By adjustment of the molar ratio of 2,4-pentanedione to hydrogen peroxide between 1.30:1.0 and 1.45:1.0, the product yields and Mn values were increased. On the basis of the catalytic properties of HRP and studies herein, we believe that the keto-enoxy radicals from 2,4-pentanedione are the first radical species generated. Then, initiation may take place through this radical or by the radical transfer to another molecule.
Preparation and Characterization of Monomeric and Dimeric Group IV Metallocene Dihydrides Having Alkyl-Substituted Cyclopentadienyl Ligands (1999)

A series of zirconocene dihydride complexes of the general form [(RnCp)2ZrH2]x having substituted cyclopentadienyl ligands has been prepared by hydrogenation of the corresponding dimethyl complexes. The most sterically crowded members (Cp*(η5-C5HMe4)ZrH2, (Cp* = (η5-C5Me5)), Cp*{η5-C5H3-1,3-(CMe3)2}ZrH2 and {η5-C5H3-1,3-(CMe3)2}2ZrH2) are monomeric; those less crowded members ([Cp*{η5-C5H4(CMe3)}ZrH2]2, [Cp*(THI)ZrH2]2 (THI = η5-tetrahydroindenyl), and [{η5-C5H3-1,3-(CHMe2)2}2ZrH2]2) are predominantly dimeric in benzene solution. Cp*{η5-C5H3-1,3-(CHMe2)2}ZrH2 and (η5-C5HMe4)2ZrH2 exist as equilibrium mixtures of monomer and dimer in benzene solution. The hydride ligands rapidly exchange with D2, affording the dideuteride complexes. Deuterium incorporation into some of the substituents on the cyclopentadienyl rings of the monomeric dihydride complexes is also observed. The X-ray structures of Cp*2HfH2, Cp*{η5-C5H4(CMe3)}ZrCl2, Cp*{η5-C5H3-1,3-(CHMe2)2}ZrCl2 and {η5-C5H3-1,3-(CMe3)2}2ZrCl2 are reported.
Precise control over shape and size of iron oxide nanocrystals suitable for assembly into ordered particle arrays (2014)

Here we demonstrate how monodisperse iron oxide nanocubes and nanospheres with average sizes between 5 and 27 nm can be synthesized by thermal decomposition. The relative importance of the purity of the reactants, the ratio of oleic acid and sodium oleate, the maximum temperature, and the rate of temperature increase, on robust and reproducible size and shape-selective iron oxide nanoparticle synthesis are identified and discussed. The synthesis conditions that generate highly monodisperse iron oxide nanocubes suitable for producing large ordered arrays, or mesocrystals are described in detail.
HfO<sub>2</sub>-Based RRAM: Electrode Effects, Ti/HfO<sub>2</sub> Interface, Charge Injection, and Oxygen (O) Defects Diffusion Through Experiment and <italic>Ab Initio</italic> Calculations (2015)

We investigate in detail the effects of metal electrodes on the switching performance and conductive filament (CF) stability of HfO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> -based RRAM. The current- voltage characteristics of the devices exhibit different electrodedependent RESET profiles which we attempt to clarify. With the insight from the experimental data, we employ first-principles calculations to have a better microscopic understanding of the devices. We study the charge injection, formation of Frenkel pairs, and diffusion of oxygen defects (oxygen vacancies Vo and oxygen interstitials Oi) that are important in the CF creation and stability during the device operation. Since the presence of Ti in RRAM has been associated with the creation of substoichiometric TiOy region at the Ti/HfO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> interface, we also explore different Ti and Hf suboxides to understand the possible composition of that interface. Our calculations suggest that the composition of the interface would be Ti <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O/Hf <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> from thermodynamic perspective. By combining the experimental and calculations results, we show that the concentration of oxygen interstitial (Oi) ions in the oxide after CF formation is larger for RRAM devices with inert electrodes (like Pt) compared with O reactive electrodes (like Ti) which results in degraded device performance. The lower Oi concentration in HfO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> layer with Ti electrodes results in improved CF thermal stability and device variability.
Single-shot, space- and time-resolved measurement of rotational wavepacket revivals in H_2, D_2, N_2, O_2, and N_2O (2007)

Femtosecond laser-induced alignment and periodic recurrences in hydrogen and deuterium are measured in a single shot for the first time, in a room temperature gas cell. Single-shot Supercontinuum Spectral Interferometry (SSSI) is employed, with measurements also performed in room temperature samples of nitrogen, oxygen, and nitrous oxide. Unlike previous optical techniques for probing molecular alignment in gases or liquids, SSSI quantitatively and directly measures the degree of molecular alignment without reliance on model fits, and it can do so with spatial resolution transverse to the pump beam. In addition, wavepacket collisional dephasing rates can be directly measured in gas samples at useful densities.
Integration of Chemical Vapor Deposition Aluminum and Physical Vapor Deposition Aluminum for Aluminum Plug Process of Sub-Quarter Micron Devices (2000)

A chemical vapor deposition (CVD)-physical vapor deposition (PVD) Al plug process was successfully integrated to fabricate device wafers with sub-quarter micron technology. Metalorganic CVD (MOCVD) TiN stacked on ion metal plasma (IMP) Ti was used as the underlayer of CVD Al from dimethylaluminum hydride (DMAH). Thin, conformal CVD Al film deposited at a low temperature functioned as an effective wetting layer for PVD Al reflow. If the CVD Al film is too thick, a complete via fill is not achieved. After PVD Al reflow, Al bumps were observed atop the via, which originated from the abnormal growth of the Al grain with a non-<111> direction. A two-step PVD Al process was applied for bump removal, because a thin PVD Al layer deposited at low temperature with high power acted as a seed layer for grain growth. The CVD-PVD Al plug process exhibited via resistance and electromigration resistance superior to those of the conventional W plug process.
A context-aware security architecture for emerging applications (2003)

We describe an approach to building security services for context-aware environments. Specifically, we focus on the design of security services that incorporate the use of security-relevant "context" to provide flexible access control and policy enforcement. We previously presented a generalized access control model that makes significant use of contextual information in policy definition. This document provides a concrete realization of such a model by presenting a system-level service architecture, as well as early implementation experience with the framework. Through our context-aware security services, our system architecture offers enhanced authentication services, more flexible access control and a security subsystem that can adapt itself based on current conditions in the environment. We discuss our architecture and implementation and show how it can be used to secure several sample applications.
Repetitive DNA sequences in<i>Mycoplasma pneumoniae</i> (1988)

Two types of different repetitive DNA sequences called RepMP1 and RepMP2 were identified in the genome of Mycoplasma pneumoniae. The number of these repeated elements, their nucleotide sequence and their localization on a physical map of the M. pneumoniae genome were determined. The results show that RepMP1 appears at least 10 times and RepMP2 at least 8 times in the genome. The repeated elements are dispersed on the chromosome and, in three cases, linked to each other by a homologous DNA sequence of 400 bp. The elements themselves are 300 bp (for RepMP1) and 150 bp (for RepMP2) long showing a high degree of homology. One copy of RepMP2 is a translated part of the gene for the major cytadhesin protein P1 which is responsible for the adsorption of M. pneumoniae to its host cell.
Learning Structured Low-Rank Representations for Image Classification (2013)

An approach to learn a structured low-rank representation for image classification is presented. We use a supervised learning method to construct a discriminative and reconstructive dictionary. By introducing an ideal regularization term, we perform low-rank matrix recovery for contaminated training data from all categories simultaneously without losing structural information. A discriminative low-rank representation for images with respect to the constructed dictionary is obtained. With semantic structure information and strong identification capability, this representation is good for classification tasks even using a simple linear multi-classifier. Experimental results demonstrate the effectiveness of our approach.
Complex Role of Hemoglobin and Hemoglobin-Haptoglobin Binding Proteins in <i>Haemophilus influenzae</i> Virulence in the Infant Rat Model of Invasive Infection (2006)

Haemophilus influenzae requires an exogenous heme source for aerobic growth in vitro. Hemoglobin or hemoglobin-haptoglobin satisfies this requirement. Heme acquisition from hemoglobin-haptoglobin is mediated by proteins encoded by hgp genes. Both Hgps and additional proteins, including those encoded by the hxu operon, provide independent pathways for hemoglobin utilization. Recently we showed that deletion of the set of three hgp genes from a nontypeable strain (86-028NP) of H. influenzae attenuated virulence in the chinchilla otitis media model of noninvasive disease. The present study was undertaken to investigate the role of the hgp genes in virulence of the wild-type serotype b clinical isolate HI689 in the infant rat model of hematogenous meningitis, an established model of invasive disease requiring aerobic growth. Bacteremia of high titer and long duration (>14 days) and histopathologically confirmed meningitis occurred in >95% of infant rats challenged at 5 days of age with strain HI689. While mutations disrupting either the Hgp- or Hxu-mediated pathway of heme acquisition had no effect on virulence in infant rats, an isogenic mutant deficient for both pathways was unable to sustain bacteremia or produce meningitis. In contrast, mutations disrupting either pathway decreased the limited ability of H. influenzae to initiate and sustain bacteremia in weanling rats. Biochemical and growth studies also indicated that infant rat plasma contains multiple heme sources that change with age. Taken together, these data indicate that both the hgp genes and the hxuC gene are virulence determinants in the rat model of human invasive disease.
Polarity in Archaeal Operon Transcription in <i>Thermococcus kodakaraensis</i> (2008)

An in vivo archaeal gene reporter system has been established based on TK1761, a gene that encodes a nonessential beta-glycosidase in Thermococcus kodakaraensis. Following the introduction of nonsense codons into promoter-proximal genes, polarity in operon expression in this archaeon has been established by both microarray hybridization assays and a reporter gene expression system.
The Common Law in South Africa: Pro Apartheid or Pro Democracy (1999)

The role of the common law in South Africa has been controversial. Some argue that South Africa's common law, inherited from Roman-Dutch and English law, has a problematic colonial tradition that has done little to protect justice and equality. Others argue that if not for parliamentary security legislation, South Africa's common law could have protected rights and freedoms.\nThis article examines several apartheid-era cases in which the common law protection of individual rights was at stake to determine whether the common law was human rights friendly, or if it was compatible with the constitutional dispensation of human rights abuses. It then examines what effect the new constitution and bill of rights have had on the common law, and considers which areas of the law outside of the constitution and bill of rights will be affected.