gebhart/patrepeval huggingface dataset:
MoCCA: a Mobile Communication and Computing Architecture (2003)

We present an integrated computing system designed to help increase the efficiency of mobile workers, specifically field service engineers. Our solution, a Mobile Communications and Computing Architecture (MoCCA), consists of both a futuristic award-winning concept design and a first-generation working prototype. The prototype has support for collaborative multimedia: on-the-move networking for high-tech equipment maintenance using voice, video clips, and access to maintenance databases. We describe the user interface, software, and hardware architectures of our prototype. The hardware architecture uses a multi-tier networking scheme to trade off a small lightweight client and high computation power and battery life. Finally, we present lessons learned from user tests in applying a novel mobile computing architecture to a complex real-world task.
Progress on the diagnosis and evaluation of brain tumors (2013)

Brain tumors are one of the most challenging disorders encountered, and early and accurate diagnosis is essential for the management and treatment of these tumors. In this article, diagnostic modalities including single-photon emission computed tomography, positron emission tomography, magnetic resonance imaging, and optical imaging are reviewed. We mainly focus on the newly emerging, specific imaging probes, and their potential use in animal models and clinical settings.
Synthesis and crosslinking of poly (aryl ether)s containing 1,1‐diphenylethylene moieties (1995)

Abstract Poly (aryl ether)s containing the diphenylethylene moiety, synthesized from 1,1‐bis(4‐fluo‐rophenyl)ethylene or 1,1‐bis(4‐hydroxyphenyl)ethylene, are thermally crosslinkable. Char‐acterization and crosslinking studies of these polymers were carried out by GPC, DSC, TGA, and NMR. The solvent resistance and T g 's of the resulting crosslinked networks increase after crosslinking. Thermogravimetric analysis shows that no significant mass loss accompanies the crosslinking reaction. © 1995 John Wiley & Sons, Inc.
From Sensory to Long-Term Memory (2005)

Everyday experience tells us that some types of auditory sensory information are retained for long periods of time. For example, we are able to recognize friends by their voice alone or identify the source of familiar noises even years after we last heard the sounds. It is thus somewhat surprising that the results of most studies of auditory sensory memory show that acoustic details, such as the pitch of a tone, fade from memory in ca. 10-15 s. One should, therefore, ask (1) what types of acoustic information can be retained for a longer term, (2) what circumstances allow or help the formation of durable memory records for acoustic details, and (3) how such memory records can be accessed. The present review discusses the results of experiments that used a model of auditory recognition, the auditory memory reactivation paradigm. Results obtained with this paradigm suggest that the brain stores features of individual sounds embedded within representations of acoustic regularities that have been detected for the sound patterns and sequences in which the sounds appeared. Thus, sounds closely linked with their auditory context are more likely to be remembered. The representations of acoustic regularities are automatically activated by matching sounds, enabling object recognition.
Magnetic Beads Actuating and Sensing by Light Addressability (2018)

Micro particles and nanoparticles applied in microfluidics became a popular direction to improve biochip performance. Magnetic beads are the well-studied carriers including manipulation and surface modification, which could be easily to apply in biosensor development. A new methodology combined the actuators and sensor in the same chip all trigged by illumination is proposed in this study. A microfluidic chip with a-Si:H layer and ITO/glass with proper operation could be used to collect magnetic beads firstly and then following the optoelectrical measurement. In the meantime, 2D images for clusters of magnetic beads can be easily achieved with the addressable illumination. This proposed platform could own the high potential for a sensor array with better sensing performance.
Hardware prefetching techniques for cache memories in multimedia applications (2002)

The workload of multimedia applications has a strong impact on cache memory performance, since the locality of memory references embedded in multimedia programs differs from that of traditional programs. In many cases, standard cache memory organization achieves poorer performance when used for multimedia. A widely explored approach to improve cache performance is hardware prefetching that allows the pre-loading of data in the cache before they are referenced. However, existing hardware prefetching approaches partially miss the potential performance improvement, since they are not tailored to multimedia locality. In this paper we propose novel effective approaches to hardware prefetching to be used in image processing programs for multimedia. Experimental results are reported for a suite of multimedia image processing programs including convolutions with kernels, MPEG-2 decoding, and edge chain coding.
Iron Oxide Pillared Graphite (2005)

We show that alpha-Fe2O3- and Fe3O4-pillared graphites can be prepared by pillaring graphite oxide with trinuclear iron acetato complex ion and calcining it in air and in vacuo, respectively. A pillared graphite structure is confirmed by transmission electron microscopy observations. The adsorption isotherms of water indicate that the mesopores of Fe3O4-pillared graphite constitute a hydrophobic nanospace.
Pivotal Role of mTOR Signaling in Hepatocellular Carcinoma (2008)

MTOR signaling has a critical role in the pathogenesis of HCC, with evidence for the role of RICTOR in hepato-oncogenesis. MTOR blockade with everolimus is effective in vivo. These findings establish a rationale for targeting the mTOR pathway in clinical trials in HCC.
Fault location on mixed overhead line and cable transmission networks (2013)

In future, underground cables will be an essential part of transmission systems and many feeders will consist of multiple overhead line and cable sections, especially in environmentally constrained countries where planning constraints may restrict the construction of new overhead lines. Most of the faults that occur on overhead lines are transient, but those on cables are generally permanent. Therefore, a combined overhead and underground transmission feeder brings a significant challenge to an auto-reclosure system which normally recloses a circuit breaker immediately after it was tripped by a protection relay responding to a fault. This paper presents a new hybrid fault locator making full use of the robustness of a distance relay and the accuracy of a travelling wave fault locator. The proposed scheme can precisely distinguish if the fault is on an overhead line or underground cable, and then send the correct tripping and reclosure sequence to a circuit breaker.
Synthesis and Mechanism of Formation of Syndiotactic Polystyrene Using a (<i>tert</i>-Butylcyclopentadienyl)titanium Complex (1996)

Polymerization of styrene in the presence of [Ti(η5-C5H4tBu)Cl3]-methylaluminoxane has been investigated. The resultant polymer is essentially 100% syndiotactic polystyrene (SPS; by NMR and differential scanning calorimetry measurements) and of narrow polydispersity (ca. 2.0−2.2). Analysis of SPS using matrix-assisted laser/desorption ionization time-of-flight mass spectrometry demonstrates that polymer chains have both methyl and ethyl end groups, indicating that the SPS is formed by both “Ti+-H” and “Ti+-Me” initiators. These mass spectral data, together with NMR data, confirm that the major mode of chain growth termination is via β-H transfer. The polymer molecular weight is dependent on the temperature of polymerization: at 0 °C, Mn = 26 × 103 (by NMR and size exclusion chromatography), whereas at 65 °C, Mn = 4 × 103. Semilogarithmic plots of consumption of styrene with time are linear over the initial part of the polymerization, indicating that the number of active titanium centers remains constant during this time. Increasing the quantity of styrene results in an identical conversion (percentage), suggesting that propagation is favored over termination processes.
A Comparative Study of Different Curve Fitting Algorithms in Artificial Neural Network using Housing Dataset (2018)

Representing a given dataset with a mathematical model is a very useful tool in many engineering applications. Several techniques exist to evolve a mathematical model for a given data set. Non-Linear regression being the most often used. The curves can be generated from these mathematical models, which provide a visualization of how that model fits the data. In this paper, three algorithms to train artificial neural networks are used to develop a good fit for the data. The three algorithms are Levenberg-Marquardt, Bayesian Regularization, and Scaled Conjugate Gradient. These algorithms were applied to the housing data set. The comparative performance of these algorithms was compared using Mean Square Error (MSE), which represents the best curve fitting for these data sets. The mean squared error was computed for each algorithm. Levenberg-Marquardt had MSE of 7.0902. Scaled Conjugate Gradient at 15.2932, and Bayesian Regularization at 5.3480. It was found that Bayesian Regularization gave the best accuracy at 96.78%, followed by Levenberg-Marquardt at 94.53% and Scaled Conjugate Gradient at 90.51%.
System engineering aspects and power electronics in an autonomous photovoltaic-hydrogen system (2005)

System engineering aspects have to be considered when designing an autonomous photovoltaic-hydrogen system (energy supply without grid connection). Power electronics plays an important role in such a system in order to achieve a high total efficiency of the system by decoupling via power electronics. Through that all the devices can be operated in their maximum power or maximum efficiency operation points. Large photovoltaic generators e.g. operate advantageously with a high system voltage to reduce wiring losses, whereas the development of high efficient electrolysers and fuel cells, optimised for operation in a solar system, leads to a low voltage layout. Therefore the use of Power electronics (DC-DC-converters) is convenient to transform the voltage levels and have an additional degree of freedom in designing the electrolyser/fuel cell which results in highest overall efficiencies. New DC-DC-converters are described, which use the autotransformers advantages. For the fuel cell the autotransformer is used in a boost circuit, whereas for the electrolysis a new high efficient, low cost, resonant DC-DC-converter based on the buck circuit is used. Examples of achievable efficiencies are given and the system layout and measurement results of the 40 kW-autonomous photovoltaic-hydrogen system in Julich (FRG) are presented.
Mesh-DHT: A locality-based distributed look-up structure for Wireless Mesh Networks (2012)

Distributed Hash Tables (DHTs) offer an elegant and fully distributed solution for reliably storing and retrieving data. Wireless Mesh Networks (WMNs) envision a fully decentralized fashion, and as such require efficient decentralized mechanisms for service discovery, mobility support and data storage and retrieval. Hence, DHTs and WMNs seem to complement each other nicely and even share common traits and challenges, such as multi-path routing and dynamic membership of unreliable nodes. Existing Internet-based DHT approaches are designed to emphasize performance and stability in Internet scenarios and do not consider the special conditions in WMNs. In particular, they do not focus on the impact of the physical neighbor relations of DHT nodes and assume efficient global connectivity. In contrast, in a WMN, locality of communication is essential to avoid unnecessary multi-hop data transmissions and congestion on the wireless link. We present Mesh-DHT, an approach for building a scalable DHT in WMNs that puts special emphasis on the locality of nodes and links. We construct a stable, location-aware overlay network that enables fully distributed organization of information. By design, our DHT geometry is closely aligned to the network topology of the WMN to emphasize local communication. We show that our approach preserves locality in the overlay construction, is robust against node failure, and makes efficient use of local information. These properties make our approach scalable even in the presence of hundreds of mesh nodes.
Whole Algae Hydrothermal Liquefaction Technology Pathway (2013)

In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to hydrocarbon fuels to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. This pathway case investigates the feasibility of using whole wet microalgae as a feedstock for conversion via hydrothermal liquefaction. Technical barriers and key research needs have been assessed in order for the hydrothermal liquefaction of microalgae to be competitive with petroleum-derived gasoline, diesel and jet range blendstocks.
The HTLV-I Tax Protein Transcriptionally Modulates OX40 Antigen Expression (2000)

OX40 is a member of the TNF receptor family, expressed on activated T cells. It is the only costimulatory T cell molecule known to be specifically up-regulated in human T cell leukemia virus type-I (HTLV-I)-producing cells. In a T cell line, OX40 surface expression was shown to be induced by HTLV-I Tax alone. To understand molecular mechanisms of OX40 gene regulation and modulation by HTLV-I Tax, we have cloned the human OX40 gene and analyzed its 5'-flanking region. By reporter gene analysis with progressive 5' deletions from nucleotides -1259 to -64, we have defined a 157-bp DNA fragment as a minimal promoter for constitutive expression. In addition, we show that in the OX40+ cell line, Co, Tax is able to further increase OX40 surface expression. Up-regulation of OX40 promoter activity by Tax requires two upstream NF-kappaB sites, which are not active in the constitutive OX40 expression. Their deletion abrogates Tax responsiveness in reporter gene analysis. The site-directed mutagenesis of each NF-kappaB site demonstrates that cooperative NF-kappaB binding is a prerequisite for Tax-directed activity as neither site alone is sufficient for a full Tax responsiveness of the OX40 promoter. Upon Tax expression, both sites bind p65 and c-Rel. These data provide new insight into the direct regulation of OX40 by Tax and add to our understanding of the possible role of the OX40/OX40 ligand system in the proliferation of HTLV-I+ T cells.
A stabilized HIV-1 envelope glycoprotein trimer fused to CD40 ligand targets and activates dendritic cells (2011)

Chimeric HIV-1 gp140 - CD40L trimers can target and activate dendritic cells. Targeting and activating immune cells using CD40L and other 'cis-adjuvants' may improve subunit protein vaccine immunogenicity for HIV-1 and other infectious diseases.
Elimination of background recombination: somatic induction of Cre by combined transcriptional regulation and hormone binding affinity (2004)

Somatically inducible Cre lines are used extensively to study gene function. However, a background level of spontaneous recombination due to unregulated expression of Cre is particularly confounding for cancer models in which following the pathogenesis of the disease requires the introduction of sporadic mutations that are monitored over time. In three transgenic mouse lines, two with Cre activity controlled at the transcriptional level (Ahcre, Mx1cre), and one controlled at the protein level (R26creER(T)), we have identified sporadic recombination at the R26R reporter locus in multiple tissues. Detailed analysis of the intestinal epithelium suggests that recombination can occur both during development and as an ongoing process in adult life. Here we present a new inducible Cre transgenic line, AhcreER(T), in which control of Cre activity is regulated at two levels: by transcriptional control of the Ah promoter and by a requirement for Tamoxifen binding. There is no detectable background intestinal recombination in adult AhcreER(T) mice on the R26R background. Inducible and dose-dependent recombination can be achieved by a single combined treatment with beta-napthoflavone and Tamoxifen.
Photoinduced Reactions of Oxygen-Deficient Centers with Molecular Hydrogen in Silica Glasses (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinduced Reactions of Oxygen-Deficient Centers with Molecular Hydrogen in Silica GlassesV. A. Radzig, V. N. Bagratashvili, S. I. Tsypina, P. V. Chernov, and A. O. RybaltovskiiCite this: J. Phys. Chem. 1995, 99, 17, 6640–6647Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April 1995https://doi.org/10.1021/j100017a054RIGHTS & PERMISSIONSArticle Views149Altmetric-Citations42LEARN 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 (833 KB) Get e-Alerts
Co‐isolation of extracellular vesicles and high‐density lipoproteins using density gradient ultracentrifugation (2014)

Extracellular vesicles (EVs) facilitate intercellular communication by carrying bioactive molecules such as proteins, messenger RNA, and micro (mi)RNAs. Recently, high-density lipoproteins (HDL) isolated from human plasma were also reported to transport miRNA to other cells. HDL, when isolated from human plasma, ranges in density between 1.063 and 1.21 g/mL, which grossly overlap with the reported density of EVs. Consequently, HDL and EV will be co-isolated when using density gradient ultracentrifugation. Thus, more stringent isolation/separation procedures of EV and HDL are essential to know their relative contribution to the pool of circulating bioactive molecules.
Segmentation and estimation of image motion by a robust method (2002)

Locating the image of moving objects in a scene and estimating their motion are among the main issues in dynamic scene analysis. They are relevant to a large variety of tasks such as autonomous navigation, tracking, obstacle detection and surveillance. A central problem faced by existing methods is related to the occurrence of motion boundaries. With the aim of achieving correct and robust interpretation in the face of occurrence of motion boundaries, noise, and insufficiently informative image brightness pattern regions, the method we propose is articulated about the fundamental concepts of gradient-based multiconstraint, statistically robust regression, and regularization. >
Dental Glass Ionomer Cements as Permanent Filling Materials? – Properties, Limitations and Future Trends (2009)

Glass ionomer cements (GICs) are clinically attractive dental materials that have certain unique properties that make them useful as restorative and luting materials. This includes adhesion to moist tooth structures and base metals, anticariogenic properties due to release of fluoride, thermal compatibility with tooth enamel, biocompatibility and low toxicity. The use of GICs in a mechanically loaded situation, however, has been hampered by their low mechanical performance. Poor mechanical properties, such as low fracture strength, toughness and wear, limit their extensive use in dentistry as a filling material in stress-bearing applications. In the posterior dental region, glass ionomer cements are mostly used as a temporary filling material. The requirement to strengthen those cements has lead to an ever increasing research effort into reinforcement or strengthening concepts.
High α/β-Anomer Selectivity in Molecular Recognition of Carbohydrates by Artificial Receptors (2002)

[structure: see text] New effective, acyclic, pyridine-based receptors 1-3 show remarkable alpha/beta binding selectivity in the recognition of monosaccharides. They are able to participate in cooperative and bidentate hydrogen bonds with sugar hydroxyls as well as in CH-pi interactions with CH's of sugar molecules.
Arc-Flags in Dynamic Graphs (2009)

Computation of quickest paths has undergoing a rapid development in recent years. It turns out that many high-performance route planning algorithms are made up of several basic ingredients. However, not all of those ingredients have been analyzed in a \emph{dynamic} scenario where edge weights change after preprocessing. In this work, we present how one of those ingredients, i.e., Arc-Flags can be applied in dynamic scenarios
The phototoxicity of phenothiazinium-based photosensitizers to bacterial membranes (2005)

The ability of phenothiazinium-based photosensitizers to induce photodamage to Escherichia coli membranes is investigated. Phenothiazinium-based photosensitizers were found to be somewhat lipophilic (log P>0.7) and to induce surface-pressure changes (3-12 mN m(-1)) in lipid monolayers mimetic of bacterial membranes, implying that these molecules are able to penetrate biological membranes. Under dark and light conditions (3.15 J cm(-1) for 30 min), phenothiazinium-based photosensitizers were incubated with E. coli cells. These cells showed levels of dark bacteriolysis that ranged between 6% and 13%, with light conditions leading to no significant increase in these levels. Gas chromatography-based analyses showed such incubations to produce no significant changes in the levels of C(16) and C(18) fatty acid chain saturation found in E. coli whole lipid-extracts. It is concluded that the phenothiazinium-based photosensitizers studied may not use E. coli membranes as their primary photodynamic target, but may inflict photodamage on cytoplasmic targets, possibly DNA.
Farnesoid X Receptor Alleviates Age-Related Proliferation Defects in Regenerating Mouse Livers by Activating Forkhead Box M1b Transcription (2009)

Our results have revealed Foxm1b as the first known direct FXR target gene involved in cell cycle regulation and have demonstrated that defective activation of FXR could be an intrinsic defect in aging regenerating livers. Activation of FXR alone is largely able to alleviate age-related liver regeneration defects. These findings highlight FXR as a potential target of drug design for promoting liver regeneration in older subjects.