gebhart/patrepeval huggingface dataset:
An integrated AC-DC converter with isolation and reduced number of power components (2017)

This paper proposes an ac-dc converter with isolation and reduced number of power components. The proposed converter combines a totem-pole bridgeless PFC rectifier and a half-bridge LLC resonant converter into an integrated circuit topology. The front-end stage of the proposed converter is designed to be operated in continuous-conduction mode (CCM) using Silicon-Carbide (SiC) MOSFET, and the dc-dc stage offers attribute of soft switching on the power switches. The proposed converter features cost-effectiveness, high efficiency and low input current total harmonics distortion. A 500W prototype of the proposed converter is developed, and the efficiency of the converter reaches up to 94.5% with 1.74% input current THD at output power 500W.
Psychiatric Predictors of Noncompliance in Inflammatory Bowel Disease (2001)

Compliance with medications is very important in the management of many gastrointestinal disorders: in inflammatory bowel disease (IBD), controlled trials have shown the benefit of prophylactic medical treatment in lowering the risk of recurrences. Our aim was to appraise the association between current psychiatric disorders and medication adherence in an unselected consecutive group of outpatients with IBD. In 85 unselected consecutive outpatients with IBD, a professional structured diagnostic interview and a psychiatric assessment, by the Structured Clinical Interview for Diagnostic and Statistical Manual-III-Reviewed, were carried out. In a stepwise regression analysis, compliance, as dependent variable, correlated positively with disease duration and inversely with both disease severity and presence of psychiatric disorders. In patients with IBD, preventive liaison psychiatry interventions seem indicated.
Perancangan Buku Panduan Peta Wisata Jelajah Kuliner Kota Bojonegoro Melalui Media Fotografi (2014)

Kuliner adalah kegiatan makan yang sudah berkembang menjadi kebutuhan wisata yang sering disebut wisata kuliner. Banyak kota yang saat ini mulai mempromosikan wisata kuliner sebagai bentuk aktivitas bagi orang-orang yang berkunjung ke kota tersebut. Salah satunya adalah kota Bojonegoro. Kota yang terkenal karena tembakau dan kayu jati ini memiliki banyak keistimewaan dibidang kuliner. Banyak dari masyarakat yang datang ke kota Bojonegoro merasa bingung karena tidak ada informasi khusus tentang kuliner di Bojonegoro. Diharapkan, dengan adanya buku panduan Jelajah Kuliner Istimewa Kota Bojonegoro dapat membantu masyarakat yang datang untuk mencicipi keistimewaan cita rasa kota Bojonegoro ini.
Hybrid fuzzy-PI neural networks control with feedforward compensator for three-phase voltage source rectifier (2004)

Two-loop control based on a kind of neural networks current inner-loop and hybrid fuzzy-PI voltage outer-loop is discussed in the paper. As far as three phase voltage converter system is concerned, the control of neural networks makes it more strongly robust, hybrid fuzzy-PI accelerate the response of system. To improve the antiinterference of system, the current feedforward compensator is added. TMS320LF2407A that is the up to date production of TI Company is adopted to fulfill the entirely digital control. The simulation and experimentation result show the method is very effective.
A New, Accurate and Easy To Implement Camera and Video Projector Model (2002)

In 2000, the Institute for Process Control and Robotics/Universität Karlsruhe (TH) has developed a prototype system for projector based augmented reality consisting of a state-of-the-art PC, two CCD cameras and a video projector which is used for registration and projection of surgical planning data. Tracking, registration as well as projection require an accurate calibration process for cameras and video projectors. We have developed a new, flexible, plain and easy to implement model, which can both be used for calibration of cameras and video projectors.
Writing a research abstract: eloquence in miniature. (2012)

Abstracts are summaries, usually of a full article or conference presentation, and may be classified into structured and unstructured ones. The former have a predefined layout necessitating the use of headings. Most journals and conferences now use the structured abstract format. Research abstracts are increasingly vital for scientific communication and are expected to continue playing a key role for the dissemination of medicine in the near future. Abstracts take time and need meticulous preparation. They must aptly summarise the content of the study or presentation and avoid vague statements and poor style. Moreover, they must comply with provided instructions. Finally, they should be pleasant to read and encourage study of the corresponding full work.
Silica Cross-linked Micelles Loading with Silicon Nanoparticles: Preparation and Characterization (2013)

A new family of luminescent and stable silicon-based nanoparticles (NPs), silica cross-linked pluronic F127 (PF127) micelles loaded with decyl capped silicon nanoparticles (decyl-SiNPs), were synthesized in aqueous media. The decyl-SiNPs were prepared by first liberating hydride terminated SiNPs (H-SiNPs) from a porous silicon matrix followed by their functionalization via hydrosilylation with 1-decene under photochemical activation. The silicon-based NPs exhibit bright photoluminescence (PL) with a quantum yield of ∼3.8% and peaking at ∼2.0 eV, which lies within the transmission window that is useful for biological imaging. They display a hydrodynamic size of ∼25 nm with exterior polyethylene oxide (PEO) blocks stretching out in aqueous media. Chloroform was found to quench the excitation at energy above 4.9 eV by shielding the incident light or relaxing the charge carriers, which highlights that caution against solvent interference should be taken when performing the studies on PL origin and luminescence efficiency of SiNPs. For PF127, the blocks of hydrophilic PEO participate in the PL quenching, while poly(propylene oxide) (PPO) does not. The colloidal solution displays excellent PL stability against salt (NaCl) and temperature but is susceptible to basic solution at pH above 9.
Power Cycle Testing of Press-Pack IGBT Chips (2014)

In this thesis the power cycling capability of individual press-pack IGBT chips is investigated. Press-pack is a packaging technology used for power semiconductors. For press-packs, both thermal and electrical contact to the semiconductor chip is obtained by the application of force on the package. Press-pack IGBTs is claimed by the manufacturers to be especially suitable for high-power applications with large variations in power output. Power cycle testing is an accelerated lifetime stress test, ideal for assessing the lifetime of components in such applications. In power cycle testing, a component is thermally cycled by on-state-losses from a current repeatedly turned on and off.SINTEF Energy Research have in cooperation with Technical University of Chemnitz developed a 2000 A power cycle tester. Power cycling of press-pack IGBT discs in this tester revealed an unexpectedly short power cycling lifetime. To obtain a sufficiently high current rating, press-pack IGBT discs consist of many paralleled IGBT chips. SINTEFs hypothesis is that changes in the internal pressure distribution, caused by deformation of the press-pack housing during power cycling, have caused a destructive stress level for IGBT chips in certain positions inside the press-pack.To investigate this hypothesis, test equipment for power cycling individual IGBT chips removed from press-pack discs have been developed in this master thesis. Two IGBT chips have been continuously power cycled for a considerable number of cycles under tough conditions. The results supports the hypothesis that the early failure of press-pack discs is caused by excessive stress on chips in certain locations. Since the lifetime of the individual chips was found to be 10 - 50 times longer than that of press-pack discs tested under similar stress, this conclusion is justified.
Optimization of buffer layers for InGaAs/AlGaAs PIN optical modulators grown on GaAs substrates by molecular beam epitaxy (2000)

In this work we compare the effect of the buffer layer on the device quality and surface morphology of strained InGaAs/AlGaAs PIN multiple quantum well (MQW) modulators. We examine GaAs buffer layers and linearly graded InGaAs buffer layers. Our results indicate that for lower indium concentrations in the quantum wells (less than about 23%) better device performance and surface morphology are obtained by growing directly on GaAs. PIN MQWs with indium mole fractions higher than about 24% have better properties when a linearly graded buffer layer is used.
High birefringence liquid crystals for photonic applications (2005)

High birefringence liquid crystals (LCs) play an important role for laser beam steering, tunable-focus lens, reflective display, cholesteric LC laser, infrared dynamic scene projector, and telecom variable optical attenuator applications. We have developed some high birefringence compounds and eutectic mixtures with birefringence in the 0.4-0.7 range. For some photonic devices where response time is critical, we have also developed high birefringence dual-frequency LC mixtures. The cross-over frequency is around 5-10 kHz. Using such a dual-frequency LC mixture, sub-millisecond response time is achieved.
Fusion of multiple trackers in video networks (2011)

In this paper, we address the camera selection problem by fusing the performance of multiple trackers. Currently, all the camera selection/hand-off approaches largely depend on the performance of the tracker deployed to decide when to hand-off from one camera to another. However, a slight inaccuracy of the tracker may pass the wrong information to the system such that the wrong camera may be selected and error may be propagated. We present a novel approach to use multiple state-of-the-art trackers based on different features and principles to generate multiple hypotheses and fuse the performance of multiple trackers for camera selection. The proposed approach has very low computational overhead and can achieve real-time performance. We perform experiments with different numbers of cameras and persons on different datasets to show the superior results of the proposed approach. We also compare results with a single tracker to show the merits of integrating results from multiple trackers.
Atomic Force Microscope Studies of Fullerene Films: Highly Stable C <sub>60</sub> fcc (311) Free Surfaces (1991)

Atomic force microscopy and x-ray diffractometry were used to study 1500 A-thick films of pure C(60) grown by sublimation in ultrahigh vacuum onto a CaF(2) (111) substrate. Topographs of the films did not reveal the expected close-packed structures, but they showed instead large regions that correspond to a face-centered cubic (311) surface and distortions of this surface. The open (311) structure may have a relatively low free energy because the low packing density contributes to a high entropy of the exposed surface.
[Serum and salivary testosterone levels in erectile dysfunction]. (1998)

In this study 66 male patients with erectile dysfunction were investigated. The authors measured the testosterone levels in serum and in saliva, which latter represent with good accuracy the serum levels of free testosterone. The mean serum total testosterone level was 17.6 nmol/L (confidence intervals: 15.5 and 20.2 nmol/L, normal range: 10-50 nmol/L). The mean salivary free testosterone level was 218.5 pmol/L (confidence intervals: 198.3 and 239.9 pmol/L, normal range: 200-1000 pmol/L). Low salivary (free) testosterone levels were found in 36.4% of patients, while only in 10.6% of patients had low serum testosterone levels (p = 0.01, by binomial test). Although there is a relationship between serum and salivary testosterone levels (r = 0.41, p < 0.001), the patients with low salivary (free) testosterone levels have in major part a normal serum total testosterone level. These data indicate that a considerable proportion of patients with erectile dysfunction have androgen deficiency. The serum total testosterone level is not a sensitive indicator to detection of hypogonadism. The androgen substitution therapy has a beneficial effect on erectile dysfunction in a significant part of patients. The measurement of free testosterone level in saliva may have an important role both in the diagnosis of diseases characterized by androgen deficiency and hyperandrogenic status.
Generation of high power 140 GHz microwaves with an FEL for the MTX experiment (2002)

We have used the improved ETA-II linear induction accelerator (ETA-III) and the IMP steady-state wiggler to generate high power (1-2 GW) microwaves at 140 GHz. The FEL was used in an amplifier configuration with a gyrotron driver. Improved control of energy sweep and computerized magnetic alignment in ETA-III resulted in small beam corkscrew motion (<1.5 mm) at 6 Mev, 2.5 kA. Reduction of wiggler errors (<0.2%), improved electron beam matching, and tapered wiggler operation resulted in peak microwave power (single-pulse) of up to 2 GW. These pulses were transported to the MTX tokamak for microwave absorption experiments. In addition, the FEL was run in a burst mode, generating 50-pulse bursts of microwaves; these results are discussed elsewhere.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A layered broadband switching architecture with physical or virtual path configurations (1991)

The authors describe a multilayer connection control architecture for broadband communications. A graph framework is introduced to describe network layers of network design, path configurations, dynamic call routing, burst switching, and asynchronous transfer mode (ATM) cell switching. These hierarchical layers of switching are performed at decreasing time scales, respectively. Switching at the higher layer is performed to reduce blocking at the next smaller time scale. A layered notion of equivalent bandwidth for satisfying layered grade-of-service parameters is introduced for making connections at these time scales. The authors then focus on the path configuration layer. Two path setup methods, namely, physical and virtual path setup, are described. Mathematical programs minimizing path bandwidth usage subject to meeting grade-of-service requirements are formulated for both methods. The relative merits of these methods are compared. In one example, physical path setup is shown to require roughly 50% more bandwidth than virtual path setup.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Van Der Waal’s Elastica (2005)

Experimental investigations of carbon nanotubes have revealed that they can collapse into nanoribbons that have a dumb-bell shape cross-section. Due to the extreme exibility of single-atom thick graphene sheets, if the tube is large enough self-induced Van der Waals forces acting on the at surfaces of the ribbon will be large enough to hold the nanotube in the collapsed (ribbon) configuration. Energetically, the additional strain (bending) energy stored in the collapsed state is offset by the decrease in energy of the Van der Waals interactions. Because Van der Waals forces are short ranged, one nds that tubes of great enough diameter are bistable. Here we investigate the natural of this bistability by investigating how the energy stored in the tube changes as it is compressed by at rigid indenters of various widths. The nanotube is assumed to deform uniformly along its length and the cross-section is modeled using inextensible, non-linear beam theory (Euler’s Elastica). We nd that the in ated (tube) conguration is always stable but that the energy barrier against decreases with increasing tube radius. Additionally, the energy difference between the in ated and collapsed states decreases nearly linear with increasing radius and for tubes with radius greater than 26 A the collapsed state is energetically favored.
Amyloid peptide channels: Blockade by zinc and inhibition by Congo red (amyloid channel block) (2000)

Amyloid peptides are the major constituents of amyloid deposits in various amyloid diseases including Alzheimer's disease, type II diabetes mellitus, prion diseases and others. The hallmark of amyloid is the binding of the dye, Congo red, which creates characteristic staining due to the dye's ability to bind the beta sheet aggregates referred to as amyloid. Previous reports have demonstrated that several cytotoxic, amyloidogenic peptides can form ion channels in planar phospholipid bilayer membranes and have suggested that these channels may represent the pathogenic mechanism of cell and tissue destruction in amyloid disease. Furthermore, zinc and Congo red can ameliorate or prevent the pathogenic effect of certain amyloidpeptides. We report here that zinc at micromolar concentrations caused a reversible blockade of islet amyloid polypeptide (IAPP, amylin) and PrP 106-126 channels whereas calcium and magnesium did not. Congo red completely inhibited channel formation if preincubated with amyloid peptides, but had no effect on IAPP or PrP 106-126 channels once formed. These results suggest a requirement for aggregation for the formation of amyloid peptide channels and are consistent with the "channel hypothesis" of amyloid disease. They also suggest potential avenues for ameliorative therapy of these illnesses.
Relationship Between Visceral Fat Accumulation and Hypertension in Obese Men (2003)

VFe is considered useful in estimating VF accumulation, and seems more effective than BMI for predicting multiple cardiovascular risk factors (VF syndrome) in obese hypertensive men.
Relevance of Half-Life in Drug Design (2017)

Drug half-life has important implications for dosing regimen and peak-to-trough ratio at the steady state. A half-life of 12-48 h is generally ideal for once daily dosing of oral drugs. If the half-life is too short, it may require more frequent dosing in order to maintain desired exposures and avoid unnecessarily high peak concentrations. This may pose challenges to achieving optimal efficacy, safety, and patient compliance. If the half-life is too long, the time over which accumulation and subsequent elimination occur may be prolonged. This may pose problems with managing adverse effects and the design of efficient clinical trials. Half-life is a key parameter for optimization in research and development. Structural modification to affect clearance, and to a lesser extent volume of distribution, is the preferred means of modulating half-life. An effective approach to half-life optimization requires an understanding of the many pitfalls associated with its estimation and interpretation.
Disposition of anagrelide, an inhibitor of platelet aggregation (1981)

A single dose of 14C-anagrelide (6,7-dichloro-1,5-dihydroimidazo [2,1-b] quinazoline-2(3H)-one monohydrochloride) equivalent to 1 mg free base and containing 100 muCi radioactivity, was taken by five healthy, fasting men. Blood, plasma, urine, and feces were analyzed for total radioactivity. Plasma and urine concentrations of anagrelide were determined, and the urinary metabolite profile was established by high-performance liquid chromatography (HPLC). The drug was rapidly absorbed with peak plasma levels of radioactivity equivalent to 50 ng anagrelide per milliliter at about 1 hr. These levels decreased to less than 10% of peak in 24 hr. Plasma levels of anagrelide peaked at 5 ng/ml at about 1 hr, decreased rapidly during the first 6 to 8 hr, and then declined more slowly, with an estimated terminal elimination half-life of about 3 days. No significant quantities of radioactivity were associated with the cellular elements of blood. Anagrelide was extensively metabolized before elimination in urine. Means of 68% and 72% of the dose were excreted in urine as metabolites in 24 and 144 hr, and 10% of the dose recovered in the feces. Several urinary metabolites were detected by HPLC.
One-Sided Intervals for at Least <i>p</i> of <i>m</i> Observations From a Normal Population on Each of <i>r</i> Future Occasions (1987)

In environmental monitoring, one must often use background data obtained before an installation begins operation to produce prediction intervals for future sets of m observations to be taken on each of r future occasions spanning the anticipated lifetime of the installation. A future observation falling outside of its interval will be taken as evidence of a change in the process being monitored; one would like to control the overall risk of false detection of change while maintaining an adequate sensitivity to real changes. Toward this end, the procedure of Fertig and Mann (1977) is extended to produce simultaneous prediction intervals for at least p of m observations to be obtained on each of r future occasions. Tables with superior choices of p for selected m, r, and background sample size are provided; these choices of p provide the best power given the other parameters, where power is defined in terms of the chance of quick detection of a future shift in the process being monitored.
[Transdisciplinary Approach for Sarcopenia. The application of life style diseases-animal models to the research for sarcopenia]. (2014)

Sarcopenia can be developed based on loss of skeletal muscle mass induced by various age-related factors, and suitable animal models must be needed to elucidate the mechanism of sarcopenia. Since loss of skeletal muscle mass is observed earlier in the elderly with lifestyle-related diseases than in the health elderly, animal models for lifestyle-related diseases can be applicable to the research for sarcopenia. Several reports using animal models for diabetes or specific diet-fed animals show that insulin resistance, hyperglycemia, increase of glucocorticoids, low-grade inflammation and accumulation of advanced glycation end products (AGEs) can accelerate loss of skeletal muscle mass. Thus, the application of these animal models to further investigations on prevention or intervention for sarcopenia will be widely expected.
Enabling Low Degraded Read Latency and Fast Recovery for Erasure Coded Cloud Storage Systems (2017)

Compared to 3-way replication, which incurs triple storage costs for data availability and reliability, erasure coding has emerged as a good alternative to ensure data safety with significantly lower storage overhead for large-scale cloud storage systems. However, this results in high degraded read latency and long reconstruction time owing to higher disk and network traffic where unavailable data are erasure coded. In this paper, we aim to improve the recovery performance for coded data when failure occurs, by shortening the reconstruction time and degraded read latency. Two optimization methods are proposed: (a) proactive data migration using drive failure prediction, (b) reactive recovery optimization when failures actually occur. This paper includes the current research direction and the future work that the author aims to perform in the next years. These results show that the reconstruction time of unavailable data could be reduced by these optimizations.
An efficient parametric algorithm for octree traversal (2000)

Awareness of elevated depressive symptoms is important in clinical practice given that these patients may be more reluctant to discuss self-care. Interventions and evidence-based approaches are needed to improve both depressive symptoms and physician-patient communication about self-care.