gebhart/patrepeval huggingface dataset:
Hepatic venous pressure gradient to assess fibrosis and its progression after liver transplantation for HCV cirrhosis (2007)

Progression of fibrosis following recurrent hepatitis C virus (HCV) infection is frequent after liver transplantation (LT). Histology remains the gold standard to assess fibrosis, but the value of hepatic venous pressure gradient (HVPG) is being explored. We evaluated patients with recurrent HCV infection after LT to assess whether HVPG correlates with liver histology, particularly fibrosis. A total of 90 consecutive patients underwent 170 HVPG measurements concomitant with transjugular liver biopsy (TJB), with 31.5 (range, 6-156) months of follow up. Median biopsy length was 22 mm and total portal tract count was 12 (complete 6, partial 6). Median HVPG was 4 mmHg: 38% of patients > or =6 mmHg (portal hypertension, PHT), 13% > or =10 mmHg. HVPG correlated with Ishak stage (r = 0.73, P < 0.001) for mild (0-3) and severe fibrosis (4-6), and grade score (r = 0.47, P < 0.001), but neither correlated with interval from LT nor biopsy length. HVPG was > or =10 mmHg in 15 patients: 12 had stage 5 or 6, and 3 severe portal expansion. HVPG was repeated in 49, between 7 and 60 months with weak correlation to fibrosis score (r = 0.30, P = 0.045). A total of 12 patients with HVPG > or =6 mmHg had fibrosis score < or =3, while 8 patients had normal HVPG but fibrosis stage > or =4. These discrepancies were mostly associated with specific histological features such as perisinusoidal fibrosis rather than errors in measuring HVPG. In 29 with HVPG <6 mmHg at 1 yr, none decompensated compared to 4 of 13 (31%) with PHT. In conclusion, HVPG correlates with fibrosis and its progression, due to recurrent HCV infection, assessed in TJB.
Spectroelectrochemistry. Combination of optical and electrochemical techniques for studies of redox chemistry (1978)

ADVERTISEMENT RETURN TO ISSUEPREVArticleSpectroelectrochemistry. Combination of optical and electrochemical techniques for studies of redox chemistryWilliam R. HeinemanCite this: Anal. Chem. 1978, 50, 3, 390A–402APublication Date (Print):March 1, 1978Publication History Published online21 September 2008Published inissue 1 March 1978https://doi.org/10.1021/ac50025a007RIGHTS & PERMISSIONSArticle Views634Altmetric-Citations53LEARN 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 (2 MB) Get e-Alerts Get e-Alerts
Computation of Maximal Safe Sets for Switching Systems (2004)

The problem of determining maximal safe sets and hybrid controllers is computationally intractable because of the mathematical generality of hybrid system models. Given the practical and theoretical relevance of the problem, finding implementable procedures that could at least approximate the maximal safe set is important. To this end, we begin by restricting our attention to a special class of hybrid systems: switching systems. We exploit the structural properties of the graph describing the discrete part of a switching system to develop an efficient procedure for the computation of the safe set. This procedure requires the computation of a maximal controlled invariant set. We then restrict our attention to linear discrete-time systems for which there is a wealth of results available in the literature for the determination of maximal controlled invariant sets. However, even for this class of systems, the computation may not converge in a finite number of steps. We then propose to compute inner approximations that are controlled invariant and for which a procedure that terminates in a finite number of steps can be obtained. A tight bound on the error can be given by comparing the inner approximation with the classical outer approximation of the maximal controlled invariant set. Our procedure is applied to the idle-speed regulation problem in engine control to demonstrate its efficiency.
Robust error-resilient approach for MPEG video transmission over Internet (2002)

In network delivery of compressed video, packets may be lost if the channel is unreliable. Such losses tend to occur in burst. In this paper, we develop an error resilient video encoding approach to help error concealment at the decoder. We introduce a new block shuffling scheme to isolate erroneous blocks caused by packet losses. And we apply data hiding to add additional protection for motion vectors. The incorporation of these scheme adds little complexity to the standard encoder. Experimental results suggest that our approach can achieve a reasonable quality for packet loss up to 30% over a wide range of video materials.
A reusable graphical user interface for manipulating object-oriented databases using Java and XML (2001)

This paper describes the design and functionality of a graphical user interface (GUI) written in Java Swing that is used to support instructional activities associated with teaching object-oriented database (OODB) concepts. The GUI supports the manipulation of objects in an OODB, assuming the implementation of a specified interface for interacting with an OODB. By using the interface, students can focus on object-oriented design and programming concepts associated with OODB concepts rather than the development of a user interface. Since the GUI uses the Extensible Markup Language (XML) for defining the database schema and data import/export, the use of the GUI provides the added benefit of demonstrating the manner in which XML interacts with database technology.
A parallel technique for improving the performance of signature-based network intrusion detection system (2011)

Nowadays, organizations discover that it is essential to protect their valuable information and internal resources from unauthorized access like deploying firewall. Firewall could prevent unauthorized access, but it cannot monitor network attacks. Another network security tool such as intrusion detection system is necessary to perform network activities monitoring. With the recent trend of high-speed networks, a large volume of data should be analyzed and processed with high-speed infrastructure. To promote the performance of network intrusion detection system and reduce the processing time of the traffic, present studies on network intrusion detection system for high-speed network focus on parallel techniques as an alternative. In this paper, a kind of parallelism is proposed to improve the performance of signature based intrusion detection system. The experimental results show that by the use of two signature based network intrusion detection systems running Snort in parallel with a portion of packets and a subset of rules, and distributing the traffic between them, the processing time of the traffic will be reduced. Consequently, the performance of the system will be improved.
A practical gate resizing technique considering glitch reduction for low power design (1999)

Article A practical gate resizing technique considering glitch reduction for low power design Share on Authors: Masanori Hashimoto Department of Communications and Computer Engineering, Kyoto University Department of Communications and Computer Engineering, Kyoto UniversityView Profile , Hidetoshi Onodera Department of Communications and Computer Engineering, Kyoto University Department of Communications and Computer Engineering, Kyoto UniversityView Profile , Keikichi Tamaru Department of Communications and Computer Engineering, Kyoto University Department of Communications and Computer Engineering, Kyoto UniversityView Profile Authors Info & Claims DAC '99: Proceedings of the 36th annual ACM/IEEE Design Automation ConferenceJune 1999 Pages 446–451https://doi.org/10.1145/309847.309977Online:01 June 1999Publication History 6citation241DownloadsMetricsTotal Citations6Total Downloads241Last 12 Months3Last 6 weeks0 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access
User-level checkpoint and recovery for LAM/MPI (2005)

As high-performance clusters continue to grow in size and popularity, issues of fault tolerance and reliability are becoming limiting factors on application scalability. We integrated one user-level checkpointing and rollback recovery (CRR) library to LAM/MPI, a high performance implementation of the Message Passing Interface (MPI), to improve its availability. Compared with the current CRR implementation of LAM/MPI, our work supports file checkpointing and own higher portability, which can run on more platforms including IA32 and IA64 Linux. In addition, the test shows that less than 15% performance overhead is introduced by the CRR mechanism of our implementation.
AID Mediates Hypermutation by Deaminating Single Stranded DNA (2003)

Activation-induced deaminase (AID) is a protein indispensable for the diversification of immunoglobulin (Ig) genes by somatic hypermutation (SHM), class switch recombination (CSR), and gene conversion. To date, the precise role of AID in these processes has not been determined. Here we demonstrate that purified, tetrameric AID can deaminate cytidine residues in DNA, but not in RNA. Furthermore, we show that AID will bind and deaminate only single-stranded DNA, which implies a direct, functional link between hypermutation and transcription. Finally, AID does not target mutational hotspots, thus mutational targeting to specific residues must be attributed to different factors.
A MEMS microphone for aeroacoustics measurements (1999)

This paper presents the development of a siliconmicromachined, piezoresistive~ microphone for aeroacaustics measurements. The microphone consists of four dielectrically-isolated, single-crystal silicon piezoresistors on top of a 1500 A-thick, 210 pm-diameter silicon-nitride membrane. The microphone was designed by employing a fundamental structural model coupled with a lumped-element energy model. Preliminary measurements indicate a sensitivity of &V/V/Pa and a linear response up to 155 dB. The measured and predicted sensitivity agree to within 3 dB.
A review of the state of the integration art (1978)

Eight years ago Carl den Brinker was asked to present his views on the future of electronics in Electronics & Power. Eight years is a long time, particularly in the semiconductor industry: in 1970 Carl den Brinker predicted that ‘ … whole processors will be made in l.s.i.’. The microprocessor has been with us for some time now, but what is next?
Efficient generation of test patterns using Boolean satisfiability (1990)

A combinational circuit can be tested for the presence of a single stuck-at fault by applying a set of inputs that excite a verifiable output response in that circuit. If the fault is present, the output will be different than it would be if the fault were not present. Given a circuit, the goal of an automatic test pattern generation system is to generate a set of input sets that will detect every possible single stuck-at fault in the circuit. These two papers describe a new method for generating test patterns: the Boolean satisfiability method. The new method is quite general and allows for the addition of any heuristic used by the structural search methods. The Boolean satisfiability method has produced excellent results on popular test pattern generation benchmarks. The first paper, Efficient Generation of Test Patterns Using Boolean Difference, gives an overview of a successful test pattern generation system using the Boolean satisfiability method. The second paper, A Framework for Evaluating Test Pattern Generation Strategies, describes potential test pattern generation heuristics and their efficacy in the Boolean satisfiability system.
The Felix File Server (1981)

This paper describes Felix - a File Server for an experimental distributed multicomputer system. Felix is designed to support a variety of file systems, virtual memory, and database applications with access being provided by a local area network. Its interface combines block oriented data access with a high degree of crash resistance and a comprehensive set of primitives for controlling data sharing and consistency. An extended set of access modes allows increased concurrency over conventional systems.
A model of voting with incomplete information and opinion polls (1999)

A one-dimensional model of spatial political competition with incomplete information is developed.It is assumed that voters care about the distribu-tion of votes among the two candidates. Votershave an incomplete infor-mation about the distribution of voters´ types. We provide conditions forwhich the publication of opinion polls may solve the informational problem voters face. The mainresult states that only when the distribution of voters is polarized we could expect that voters actas if they were fully informed.
New Lasers (1987)

Excimer lasers, color-center lasers of alkali halides, and semiconductor lasers of AlGaAs have become commercially available during the last decade. More recent lasers are discussed as follows:1.1 Melles-Griot introduced a He-Ne laser with green output at 543.5nm wavelength into market.1.2 A slab glass laser with a cw output of 140W was reported by the Institute for Solid-State Physics, and a cw power of 1kW is expected.1.3 A monolithic semiconductor laser array with a quasi-cw power of 25W was reported by Spectra Diode Laboratories.2.1 Tunable solid-state lasers of alexandrite, GSGG, sapphire etc. are making good progress.2.2 The copper vapor and the gold vapor lasers are now commercially available, and finding medical uses.2.3 Quaternary semiconductor lasers of InGaAsP is tunable in the near infrared, and InGaAlP is tunable in the red with a low power.3. Experimental and theoretical investigations on soliton lasers, free-electron lasers, and X-ray lasers have been very active in the last few years. However, medical application of these lasers must wait for further research and development.
Precoding Vector Distribution under Spatial Correlated Channel and Nonuniform Codebook Design (2008)

In this paper, influence of spatial correlation on codebook-based precoding technology is analyzed. Optimum pre- coder distribution under spatial correlated channel is achieved at first, which is no longer isotropical on the unitary matrix (vector) set. Selection probability of the matrix (vector) in codebook is not uniform too. Then, a novel codebook design is presented for spatial correlated channel, which is termed as nonuniform codebook. Codebook is designed as function of spatial correlation characteristic of channel and presents a nonuniform quantization of unitary vector set. Smaller quantization error and higher spectral efficiency can be achieved by proposed codebook design than that of traditional fixed uniform codebook design, with the cost of slight feedback overhead increasing.
Synthesis of Star-Shaped Poly(<i>p</i>-Alkoxystyrenes) by Living Cationic Polymerization (1996)

Star-shaped polymers (4) that consist of poly(p-alkoxystyrene) arms and a microgel core of a divinyl compound (1b) were synthesized in high yield (>95%) on the basis of the living cationic polymerization with the HI/ZnI2 initiating system. For example, the polymerization of p-methoxystyrene (pMOS) with HI/ZnI2 at −15 °C in methylene chloride led to a living polymer, which was subsequently allowed to react with a small amount of the linking agent 1b [CH2CHC6H4O(CH2)3OC6H4CHCH2] to give star-shaped polymers 4, soluble in common organic solvents including chloroform, methylene chloride, and THF. The M̄w (by light scattering) of 4 ranged from 5 × 104 to 60 × 104, and the number of arms from 7 to 50 per molecule, which increased with increasing [1b]0/[living end] ratio. Similar results were obtained with p-tert-butoxystyrene having a bulkier substituent than pMOS. In contrast to the bis(alkoxystyrene)-type compound 1b, the use of a bifunctional vinyl ether [1a; CH2CHOCH2CH2OC6H4C(CH3)2C6H4OCH2CH2OCHCH2] as a linking agent resulted in a sharp decrease in the yield of the star-shaped polymers.
Solar hydrogen generation through overall water splitting on gallium-zinc oxynitride visible-light activated photocatalyst (2017)

In this study, novel approaches for the development of solar-responsive photocatalysts for water splitting are investigated, with a focus on the gallium-zinc oxynitride solid solution (GaN:ZnO). A facile synthesis technique was developed for the fabrication of nanoporous GaN:ZnO photocatalyst. The synthesis time was reduced substantially to 12 min (from original 10+ h) as the result of effective solid–solid and gas–solid reactant interactions at the nanoscale. The synthesized photocatalyst samples were characterized for their optical, structural, and photochemical properties. Despite the short synthesis time, the prepared nanoporous GaN:ZnO photocatalyst maintained the overall visible-light water splitting activities at reasonable rates, reaching to the maximum apparent quantum efficiency of 2.71% at 420–440 nm. Decoration of the photocatalyst surface with the optimal amount of various hydrogen and oxygen evolution co-catalyst materials through photo-deposition and impregnation was investigated. Our experimental and characterization data suggest a mechanism for minimizing the effect of the undesired charge recombination and reverse reaction through the utilization of structural nanopores as the active water splitting regions. To reduce the recombination of photo-excited charges, the hybridization of GaN:ZnO photocatalyst on highly conductive graphene support was studied. Effective electrochemical interaction between composite components was confirmed through material characterization, photo-induced conversion of graphene oxide to reduced graphene oxide (rGO), and visual observation of co-catalyst nanoparticles on the surface of the conductive nanosheets. The GaN:ZnO-rGO composite photocatalyst exhibited ~70% improvement in photocatalytic hydrogen evolution. Finally, a number of approaches for the synthesis of one-dimensional (1-D) GaN:ZnO photocatalysts were studied. A novel direct fabrication route for 1-D GaN:ZnO through gold-catalyzed atmospheric pressure chemical vapour deposition was proposed. The material characterization data indicated that the proposed method is capable of preparing 1-D GaN:ZnO nanostructures with a wide range of morphologies, including nanofibers and nanowires, via vapour–liquid–solid epitaxy. In addition, via the proposed method, the dimensions of the obtained nanomaterials can be tailored. The synthesized GaN:ZnO nanowires demonstrated promising sacrificial hydrogen evolution compared to the powder and nanofiber photocatalysts. The work presented in this research provides an in-depth understanding of the nanoscale fabrication and optimization of GaN:ZnO photocatalysts for visible-light hydrogen generation.
Advances in the management of PML: Focus on natalizumab (2011)

Progressive multifocal leukoencephalopathy (PML), a rare opportunistic infection of the central nervous system, occurs mainly in the setting of broad-based and selective immunosuppression. The immunomodulatory agent most often implicated in the development of PML is the monoclonal antibody natalizumab. Management of PML begins with risk stratification. Factors that predict the risk of PML are JC virus (JCV) antibody status, history of chemotherapy use, and cumulative exposure to natalizumab. The risk of natalizumab-related PML increases up to a duration of 36 months of therapy, after which the risk appears to level off. If suspicious for PML, the use of a sensitive JCV polymerase chain reaction assay permits early diagnosis. Immune reconstitution represents the mainstay of treatment for PML. With rapid reversal of immunosuppression followed by immunologic recovery, almost all patients suffer clinical deterioration termed immune reconstitution inflammatory syndrome (IRIS). High-dose corticosteroids are often recommended if a clinical and imaging syndrome resembling IRIS develops after immune restoration.
Relative contribution of three main virulence factors in Pseudomonas aeruginosa pneumonia* (2011)

In a murine model of pneumonia, our data suggest that type 3 secretion system and elastase are the most important virulence factors in clinically relevant P. aeruginosa strains.
Near infrared-fluorescent and magnetic resonance imaging molecular probe with high T1 relaxivity for in vivo multimodal imaging (2010)

A new gadolinium chelating NIR fluorescent molecular probe increases T(1) relaxivity of water protons, facilitating combined optical and magnetic resonance imaging.
Design of a Multipolarized RFID Reader Antenna for UHF Near-Field Applications (2017)

This paper presents our investigation into a novel ultrahigh-frequency (UHF) radio frequency identification (RFID) multipolarized reader antenna based on a pair of symmetrical meandering open-ended microstrip lines for near-field applications. The near-field and multipolarization operation is achieved by introducing a 90° phase shift between the currents flowing along the opposite side of two branches. The proposed antenna is shown to generate a uniform and strong electric field in its near-field region within a reading volume: 450 mm x 450 mm x 350 mm (width x length x height). The simulated and measured impedance bandwidths (-10 dB) agree very well, ranging from 825 to 965 MHz and covering the UHF RFID standard. In addition, it exhibits a low far-field gain, avoiding to misreading the tags outside the near-field region. The fabricated antenna was fully tested with multiple tag antennas that are placed in different orientations and even in a conveyor system, demonstrating a 100% reading rate of arbitrarily oriented tags within the reading zone.