gebhart/patrepeval huggingface dataset:
Design and analysis of a lightweight certificate revocation mechanism for VANET (2009)

In this paper, we propose a lightweight mechanism for revoking security certificates appropriate for the limited bandwidth and hardware cost constraints of a VANET. A Certificate Authority (CA) issues certificates to trusted nodes, i.e., vehicles. If the CA looses trust in a node (e.g., due to evidence of malfunction or malicious behavior), the CA must promptly revoke the certificates of the distrusted node. To distribute revocation information quickly even during incremental deployment, we propose CAs use Certificate Revocation Lists (CRLs). The CRL should be composed in a secure manner, and it should be exchanged in a way such that the CRL is both quickly and widely distributed. Laberteaux et al. proposed a mechanism for the quick distribution of CRL updates that also covers a wide area by using car-to-car (C2C) communication. However, this revocation process, which involves both the CA and VANET nodes, must conform to the aforementioned bandwidth and hardware restrictions. In this paper, we present mechanisms that achieve the goals of reduced CRL size, a computationally efficient mechanism for determining if a certificate is on the CRL, and a lightweight mechanism for exchanging CRL updates. Additionally, we present a formal proof of the security of our mechanism for reducing the size of CRLs.
<title>Color reflection holography using four recording wavelengths</title> (2001)

We present a theoretical analysis of color reflection holography using four recording wavelengths. The color reproduction of the hologram is discussed using the 1976 CIE chromaticity diagram. The optimum combination of the four wavelengths which minimizes the distance between the reconstructed image and the object points is calculated using nonlinear least square method. It is found that the extremely good color reproduction can be achieved by four- wavelength recording. We also analyze the color reproduction for the four practical laser wavelengths. The optimum choice of the wavelengths and the attainable color reproduction are discussed.
31.3: New Approach to Developing Liquid Crystal Materials for Idling Stop Driving on Reflective Displays (2015)

Using a temporal modulation transfer function, we examined the luminance change during low‐frequency driving of liquid crystal displays, which is not perceived as flickers by humans. We also developed a novel liquid crystal mixture that doubles the rewrite interval (relative to the conventional mixture), and realizes an eye‐friendly display panel.
Tactile stimulus receptor for a hand prosthesis (1989)

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 Patrick E. Paterson, Judd A. Katz; Tactile stimulus receptor for a hand prosthesis. J. Acoust. Soc. Am. 1 December 1989; 86 (6): 2476. https://doi.org/10.1121/1.398397 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 ContentAcoustical Society of AmericaThe Journal of the Acoustical Society of America Search Advanced Search |Citation Search
High Availability-Aware Optimization Digest for Applications Deployment in Cloud (2014)

Cloud computing is continuously growing as a business model for hosting information and communication technology applications. Although on-demand resource consumption and faster deployment time make this model appealing for the enterprise, other concerns arise regarding the quality of service offered by the cloud. One major concern is the high availability of applications hosted in the cloud. This paper demonstrates the tremendous effect that the placement strategy for virtual machines hosting applications has on the high availability of the services provided by these applications. In addition, a novel scheduling technique is presented that takes into consideration the interdependencies between applications components and other constraints such as communication delay tolerance and resource utilization. The problem is formulated as a linear programming multi-constraint optimization model. The evaluation results demonstrate that the proposed solution improves the availability of the scheduled components compared to OpenStack Nova scheduler.
English Alphabet Recognition with Telephone Speech (1991)

A recognition system is reported which recognizes names spelled over the telephone with brief pauses between letters. The system uses separate neural networks to locate segment boundaries and classify letters. The letter scores are then used to search a database of names to find the best scoring name. The speaker-independent classification rate for spoken letters is 89%. The system retrieves the correct name, spelled with pauses between letters, 91% of the time from a database of 50,000 names. 1 INTRODUCTION The English alphabet is difficult to recognize automatically because many letters sound alike; e.g., B/D, P/T, V/Z and F/S. When spoken over the telephone, the information needed to discriminate among several of these pairs, such as F/S, P/T, B/D and V/Z, is further reduced due to the limited bandwidth of the channel Speaker-independent recognition of spelled names over the telephone is difficult due to variability caused by channel distortions, different handsets, and a variety o...
Evidence that the anti‐coagulant and lethal properties of a basic phospholipase A<sub>2</sub> from snake venom are unrelated (1989)

The basic phospholipase A2 (PLA2) from venom of the African elapid Naja nigricollis was previously shown to have anti-coagulant and lethal properties, both of which were abolished by treatment with p-bromophenacyl bromide (pBP). In the present paper we first report that pBP-treated PLA2 is capable of inhibiting the anti-coagulant activity but not the lethal activity of native PLA2, thus suggesting that both properties might be independent. We then confirm this evidence using PLA2-specific monoclonal immunoglobulins. One of these, called HSF, neutralized the lethal activity but not the anti-coagulant activity, whereas another antibody, called HSP2, inhibited the anti-coagulant activity but not the lethal activity of the PLA2. The data presented in this paper are taken as evidence that the anti-coagulant activity is not implicated in the lethal effects of basic PLA2 from Naja nigricollis.
Parametric investigation of miniaturized cylindrical and annular Hall thrusters (2002)

Conventional annular Hall thrusters become inefficient when scaled to low power. An alternative approach, a 2.6 cm miniaturized cylindrical Hall thruster with a cusp-type magnetic field distribution, was developed and studied. Its performance was compared to that of a conventional annular thruster of the same dimensions. The cylindrical thruster exhibits discharge characteristics similar to those of the annular thruster, but it has a much higher propellant ionization efficiency. Significantly, a large fraction of multicharged xenon ions might be present in the outgoing ion flux generated by the cylindrical thruster. The operation of the cylindrical thruster is quieter than that of the annular thruster. The characteristic peak in the discharge current fluctuation spectrum at 50–60 kHz appears to be due to ionization instabilities. In the power range 50–300 W, the cylindrical and annular thrusters have comparable efficiencies (15%–32%) and thrusts (2.5–12 mN). For the annular configuration, a voltage less than 200 V was not sufficient to sustain the discharge at low propellant flow rates. The cylindrical thruster can operate at voltages lower than 200 V, which suggests that a cylindrical thruster can be designed to operate at even smaller power.
Real time monitoring of renal ischemic injury via optical spectroscopy (2004)

We investigate optical spectroscopy methods to correlate with warm ischemia time in hypothermically preserved rat kidneys and in vivo. The objective is to find a practical method for analyzing organ warm ischemic damage before transplantation.
In‐situ monitoring of product shrinkage during injection molding using an optical sensor (1999)

Abstract We have used an optical fiber sensor for in‐situ monitoring of product shrinkage during injection molding. The sensor, consisting of a bundle of optical fibers with a sapphire window at its end, is positioned in the ejector pin channel of the mold so that the sapphire window sits flush with the inside wall of the mold cavity. The optical view with this sensor is through the thickness (3.175 mm) of the molded product. The fiber bundle is divided into light excitation fibers and light collection fibers. Light from a helium neon laser is transmitted to the resin via the excitation fibers and the detected response is light that reflects from any interface at which there is a difference of index of refraction. When the molded product shrinks, it separates from the wall and sapphire window, and establishes the geometry of a Fabry‐Perot interferometer. During the molding of polystyrene, polypropylene and polyethylene, we observed optical interference fringes that were generated by the movement of the molded product away from the mold wall and window. By counting fringes, a measurement of shrinkage was made. Sensor behavior is described by a model that takes into account the reflection coefficient at each surface, the change in index of refraction of the resin and the coherence of the excitation light. The model has been used to describe asymmetric product shrinkage.
A chemical and thermal pretreatment process for the dewatering of fuel‐grade peat (1987)

Abstract Using a batch heating system raw peat was heated to temperatures below 200°C before mechanical dewatering. Variations were made in heat up time, residence time and helding temperature. After heat treatment, dewatering could be further enhanced by the addition of chitosan, a polycationic biopolymer.
Please, feel free to contact us for the whole paper/presentation Properties That are Important in Lead-Free Solders (2008)

The change to lead-free solders has forced the electronics industry to consider more than it ever has before what properties are important in a solder. When the tin-lead eutectic was the only solder considered in most applications it was a matter of adapting products and processes to the properties of that alloy, taking advantage of its strengths and designing around its weaknesses. With what seemed like an almost unlimited range of options the electronics industry faced a dilemma when it had to choose a lead-free solder to replace the tin-lead solder that it had relied on ever since there was an electronics industry. The initial concern was melting point as it was considered essential that the replacement alloy have a melting point as close as possible to the 183°C of the tin-lead eutectic. It has since been found that higher melting point alloys can be used without a pro rata increase in process temperature. The higher yield point of most lead-free solder options seemed initially to be a bonus but it has subsequently been realised that in some circumstances compliance is more important than strength. Although some properties of tin-lead solder have turned out to be not as essential in a leadfree solder as initially expected other properties are turning out to be as important in a lead-free as they were in tin-lead. Solidification behaviour and fluidity are two examples of such properties and it has been found that lead-free solders that match tin-lead solder in that regard offer measurable performance advantages. In this paper the authors will review the solder properties they consider important in a lead-free solder and report the results of measurement of these properties in a range of lead-free solders currently used or under consideration for commercial production.
Real-Time Automatic Tuning of Noise Suppression Algorithms for Cochlear Implant Applications (2012)

The performance of cochlear implants deteriorates in noisy environments compared to quiet conditions. This paper presents an adaptive cochlear implant system, which is capable of classifying the background noise environment in real time for the purpose of adjusting or tuning its noise suppression algorithm to that environment. The tuning is done automatically with no user intervention. Five objective quality measures are used to show the superiority of this adaptive system compared to a conventional fixed noise-suppression system. Steps taken to achieve the real-time implementation of the entire system, incorporating both the cochlear implant speech processing and the background noise suppression, on a portable PDA research platform are presented along with the timing results.
Naphthyridinomycin, a new broad-spectrum antibiotic. (1975)

A new antibiotic, naphthyridinomycin, was isolated in crystalline form from the culture filtrate of Streptomyces lusitanus AY B-1026. The antibiotic is active against a large number of both gram-positive and gram-negative bacteria, and inactive against Candida albicans, Trichophyton granulosum and Microsporum gypseum. The antibiotic is toxic in mice.
Advancing Connectionist Temporal Classification with Attention Modeling (2018)

In this study, we propose advancing all-neural speech recognition by directly incorporating attention modeling within the Connectionist Temporal Classification (CTC) framework. In particular, we derive new context vectors using time convolution features to model attention as part of the CTC network. To further improve attention modeling, we utilize content information extracted from a network representing an implicit language model. Finally, we introduce vector based attention weights that are applied on context vectors across both time and their individual components. We evaluate our system on a 3400 hours Microsoft Cortana voice assistant task and demonstrate that our proposed model consistently outperforms the baseline model achieving about 20% relative reduction in word error rates.
Sugar and Base-Modified 2',3'-Dideoxynucleosides as Potential Anti-Aids Drugs (1989)

Abstract Several 2′,3′-dideoxynucleosides have proven to be effective against HIV-1 in cell culture. The 2′,3-unsaturated analogues dideoxycytidinene (D4C) and dideoxythymidinene (D4T) are among the most potent and selective inhibitors of HIV-1 replication in vitro. However, 2′,3′-didehydro-2′,3′-dideoxynucleosides are relatively unstable. A chlorine substituent at the 2′-position increases the stability, and, therefore, some 2′-chloro-2′,3′-didehydro-2′,3′-dideoxynucleosides were synthesized and evaluated for anti-HIV-1 activity.
Automated Detection and Measurement of Corneal Haze and Demarcation Line in Spectral-Domain Optical Coherence Tomography Images (2018)

Keratoconus is a progressive eye disease that may lead to significant loss of visual acuity. Corneal cross-linking (CXL) is a surgical procedure that halts the progression of keratoconus. One commonly used clinical indicator of CXL success, albeit being an indirect one, is the presence and depth of stromal demarcation line. In addition, corneal haze beyond the demarcation line can be an ominous sign of loss of corneal transparency, which is a much dreaded side effect of CXL. To date, ophthalmologists evaluate the presence and depth of the demarcation line and grade corneal haze using slit lamp biomicroscopy and/or optical coherence tomography (OCT). Interpreting the output of the former is very biased at best, while analyzing the information presented by the latter is time consuming, potentially error prone, and observer dependent. In this paper, we propose the first method that employs image analysis and machine learning to automatically detect and measure corneal haze and demarcation line presence and depth in OCT images. The automated method provides the user with haze statistics as well as visual annotation, reflecting the shape and location of the haze and demarcation line in the cornea. Our experimental results demonstrate the efficacy and effectiveness of the proposed techniques vis-a-vis manual measurements in a much faster, repeatable, and reproducible manner.
Redesigning a tagless access buffer to require minimal ISA changes (2016)

Energy efficiency is a first-order design goal for nearly all classes of processors, but it is particularly important in mobile and embedded systems. Data caches in such systems account for a large portion of the processor's energy usage, and thus techniques to improve the energy efficiency of the cache hierarchy are likely to have high impact. Our prior work reduced data cache energy via a tagless access buffer (TAB) that sits at the top of the cache hierarchy. Strided memory references are redirected from the level-one data cache (L1D) to the smaller, more energy-efficient TAB. These references need not access the data translation lookaside buffer (DTLB), and they can avoid unnecessary transfers from lower levels of the memory hierarchy. The original TAB implementation requires changing the immediate field of load and store instructions, necessitating substantial ISA modifications. Here we present a new TAB design that requires minimal instruction set changes, gives software more explicit control over TAB resource management, and remains compatible with legacy (non-TAB) code. With a line size of 32 bytes, a four-line TAB can eliminate 31% of L1D accesses, on average. Together, the new TAB, L1D, and DTLB use 22% less energy than a TAB-less hierarchy, and the TAB system decreases execution time by 1.7%.
Dual‐Modal NIR‐Fluorophore Conjugated Magnetic Nanoparticle for Imaging Amyloid‐β Species In Vivo (2018)

Senile plaques, the extracellular deposit of amyloid-β (Aβ) peptides, are one of the neuropathological hallmarks found in Alzheimer's disease (AD) brain. The current method of brain imaging of amyloid plaques based on positron emission tomography (PET) is expensive and invasive with low spatial resolution. Thus, the development of sensitive and nonradiative amyloid-β (Aβ)-specific contrast agents is highly important and beneficial to achieve early AD detection, monitor the disease progression, and evaluate the effectiveness of potential AD drugs. Here a neuroprotective dual-modal nanoprobe developed by integrating highly Aβ-specific and turn-on fluorescence cyanine sensors with superparamagnetic iron oxide nanoparticles as an effective near-infrared imaging (NIRI)/magnetic resonance imaging (MRI) contrast agent for imaging of Aβ species in vivo is reported. This Aβ-specific probe is found not only nontoxic and noninvasive, but also highly blood brain barrier permeable. It also shows a potent neuroprotective effect against Aβ-induced toxicities. This nanoprobe is successfully applied for in vivo fluorescence imaging with high sensitivity and selectivity to Aβ species, and MRI with high spatial resolution in an APP/PS1 transgenic mice model. Its potential as a powerful in vivo dual-modal imaging tool for early detection and diagnosis of AD in humans is affirmed.
Inheritance of Pink Flower in Soybean (1992)

In soybean [ Glycine max (L.) Merr.], there are several possible flower colors: white, near‐white, purple, purple‐throat, and magenta. We report a new flower color, described as pink, which is distinct from all previously reported flower colors. Segregation ratios for the progeny row in which the mutant was found, and subsequent selfed progeny, indicate that the pink flower color is controlled by a single recessive gene. When this pink‐flowered plant was crossed with all reported flower color genes and the F 2 populations classified for flower color, results indicate that the pink flower gene is independent of known flower color genes and acts as a modifier gene to decrease pigment expression at the W1 locus. We propose the gene symbol wp to be used to describe pink flower color inheritance.
Circulating miRNAs with prognostic value in metastatic breast cancer and for early detection of metastasis (2016)

Metastasis is the principal cause of high morbidity and mortality among breast cancer (BC) patients. Identification of markers that can be routinely monitored to predict onset of metastasis in BC patients and prognosis of metastatic breast cancer (MBC) patients would increase their median survival. In this study, plasma miRNAs of 40 MBC patients were profiled by TaqMan low density arrays and miRNAs with prognostic capacity were identified. The candidates were validated initially in the samples of 237 MBC patients and subsequently in 335 samples from an independent study cohort of BC patients. Sixteen miRNAs were established to be significantly associated with overall survival, and were termed as prognostic miRNA panel template (PROMPT). These included miR-141, miR-144, miR-193b, miR-200a, miR-200b, miR-200c, miR-203, miR-210, miR-215, miR-365, miR-375, miR-429, miR-486-5p, miR-801, miR-1260 and miR-1274a. Additionally, 11 of these miRNAs were also associated with progression-free survival. Their prognostic significance was further confirmed in samples from a second study cohort of BC patients. In addition, miR-200a, miR-200b, miR-200c, miR-210, miR-215 and miR-486-5p were found to be significantly associated with onset of metastasis up to 2 years prior to clinical diagnosis in BC patients. We have thus identified panels of miRNAs, which include metastasis promoting miR-200 family and miR-203, as well as oncogenic and tumor-suppressive miRNAs, that can serve as prognostic markers for MBC, and early detection markers of metastasis in BC.
α-Melanocyte Stimulating Hormone-Induced Pigmentation Is Blocked by Depletion of Protein Kinase C (1996)

We have explored the role of protein kinase C (PKC) in pigmentation induced by alpha-melanocyte stimulating hormone (alpha-MSH). Using the well-studied S91 Cloudman mouse melanoma model system in which 10(-7) M alpha-MSH is known to produce a time-dependent increase in pigmentation, we found an increase in the activity of tyrosinase, the key enzyme in pigmentation, between Days 2 and 6 accompanied by an increase in mRNA and protein levels of tyrosinase, as well as an increase in the level of specifically the beta isoform of PKC. When S91 cells were treated with phorbol dibutyrate, 95% of PKC activity was lost within 48 h and the alpha-MSH-induced melanogenesis was completely blocked, as was the induction of tyrosinase mRNA and protein. Serially passaged S91 cells no longer capable of responding to alpha-MSH had an undetectable level of PKC-beta, although the tyrosinase protein level was identical to that of alpha-MSH-responsive cells. Furthermore, in these S91 cells alpha-MSH also did not increase the level of tyrosinase mRNA. Thus, induction of murine melanogenesis by alpha-MSH involves up-regulation of tyrosinase mRNA and protein mediated in part by the PKC-dependent pathway, associated with an up-regulation of the beta isoform previously demonstrated to specifically activate tyrosinase in human melanocytes.