gebhart/patrepeval huggingface dataset:
Untersuchung neuartiger Konzepte zur geregelten Ansteuerung von IGBTs (2010)

Der Einsatz von schnellschaltenden IGBTs in Niederspannungs- und Mittelspannungsanwendungen sowie Energieübertragungssystemen stellt an die Zuverlässigkeit der eingesetzten Halbleiter, der Isolationssysteme und die elektromagnetische Umgebung hohe Anforderungen. Daher ist eine aktive Beeinflussung der Schalteigenschaften des IGBTs von großem Interesse. Die Dissertation behandelt die Untersuchung neuartiger Ansteuerverfahren zur Regelung der Kollektorstromänderungsgeschwindigkeit während des Einschaltvorganges und der Kollektor-Emitter-Spannungsänderungsgeschwindigkeit während des Ausschaltvorganges. Weiterhin wird ein neues Verfahren zur Überspannungsbegrenzung beim Ausschalten des IGBTs vorgestellt und untersucht. Basierend auf einer Beschreibung der Funktionsweise und der verfügbaren Bauformen des IGBTs wird seine Anwendung in verbreiteten Wechselrichtertopologien erläutert. Ausgehend von einer Übersicht der in der Literatur verfügbaren Modellierungen des Schaltverhaltens des IGBTs und des Standes der Technik bei IGBT-Ansteuerungen werden neuartige geregelte IGBT-Ansteuerkonzepte zur di/dt-Regelung, du/dt-Regelung und zum Active Clamping (Aktive Überspannungsbegrenzung) vorgestellt. Experimentell werden diese Konzepte mit umfangreichen Einzelpulsmessungen an einem 1700V/2400A-IGBT verifiziert. Mit den im Rahmen dieser Arbeit durchgeführten Untersuchungen kann gezeigt werden, dass die neuartigen Konzepte eine geschlossene Regelung der Kollektorstromänderungsgeschwindigkeit und der Kollektor-Emitter-Spannungsänderungsgeschwindigkeit sowie ein Active Clamping für Multichip-Module auf Basis einer einheitlichen und einfach zu parametrierenden Schaltungsarchitektur möglich macht.
Study of peak profiles in nonlinear gas chromatography. 2. Determination of the curvature of isotherms at zero surface coverage on graphitized carbon black (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudy of peak profiles in nonlinear gas chromatography. 2. Determination of the curvature of isotherms at zero surface coverage on graphitized carbon blackA. Jaulmes, C. Vidal-Madjar, M. Gaspar, and G. GuiochonCite this: J. Phys. Chem. 1984, 88, 22, 5385–5391Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1 October 1984https://pubs.acs.org/doi/10.1021/j150666a055https://doi.org/10.1021/j150666a055research-articleACS PublicationsRequest reuse permissionsArticle Views57Altmetric-Citations18LEARN 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 InRedditEmail Other access options Get e-Alerts
Selective regrowth of III–V epitaxial layers by low pressure organometallic vapor phase epitaxy using CCl4 (1993)

The use of carbon tetrachloride was examined as a means of suppressing deposition on the dielectric mask during the selective regrowth of III–V epitaxial layers by organometallic vapor phase epitaxy. Highly anisotropic dry etching was used to form narrow (∼1 μm wide) trenches and mesas. Reentrant mesas were formed by wet chemical etching. Under conventional growth conditions, polycrystalline GaAs was deposited over the mask adjacent to the trenches. By adding CCl4, selectivity could be greatly enhanced; however the growth rate in the trenches was significantly increased due to lateral diffusion of the reactants upon desorption from the mask thereby making acceptable control of the growth rate difficult. Addition of CCl4 during the growth of InP and AlGaAs significantly improved the selectivity in the case of growth around etched mesas.
Compatibility of Various Materials with Oral Tissues. I: The Components in Composite Restorations (1979)

The basic ingredients in composite restorative materials include: monomers, polymerization stabilizers, color stabilizers, polymerization initiators, polymerization accelerators, inorganic reinforcing fillers, and coupling agents. Typical members of each category are discussed.
Why Did FDI Inflows of Pakistan Decline? From the Perspective of Terrorism, Energy Shortage, Financial Instability, and Political Instability (2018)

Foreign direct investment (FDI) inflows are important for economic development in all countries, especially developing ones. In many developing countries, FDI inflows have increased over the past two decades. However, in Pakistan FDI inflows declined over the past decade. This study examines the reasons for declining FDI inflows to Pakistan, considering the main issues, such as terrorism, energy shortages, financial instability, and political instability, with some macroeconomic indicators as control variables. These analyses are based on pre- and post-global financial crisis events, and we check the robustness by controlling for the global financial crisis. Our analyses are conducted using an autoregressive distributed lag model (ARDL) for co-integration among variables. The results show that energy shortages, financial instability, and political instability have adverse effects, and terrorism has insignificant effects on FDI inflows to Pakistan before the financial crisis in the long term. However, the post-financial crisis period indicates that terrorism and energy shortages are the main drivers of decline in FDI inflows to Pakistan. Market size, inflation, and exchange rates affect FDI inflows positively. The global financial crisis has an adverse impact on FDI inflows to Pakistan. This study is helpful for the Pakistani government as it attempts to design useful policies for attracting FDI.
Real-time compression of depth streams through meshification and valence-based encoding (2012)

Free viewpoint telepresence is currently an active and very interesting field of research. Its focus is reproducing in real-time a remote subject (or environment) in a way it can be rendered from an arbitrary point-of-view. This paper presents a novel approach to real-time reconstruction and transmission of a high-quality 3D model of the subject/environment based on the meshification of the depth map produced by a range camera system (i.e. time-of-flight, Kinect). The generated mesh is compressed through a variant of the state-of-the-art single-rate mesh compression algorithm, ready to be transmitted over the network towards the rendering location in a fast and efficient way.
Cardiovascular complications of severe acute respiratory syndrome (2006)

In patients with SARS, cardiovascular complications including hypotension and tachycardia were common but usually self limiting. Bradycardia and cardiomegaly were less common, while cardiac arrhythmia was rare. However, only tachycardia persisted even when corticosteroid therapy was withdrawn.
The Precursors of Chocolate Aroma: A Comparative Study of Fermented and Unfermented Cocoa Beans (1964)

SUMMARY The precursors of chocolate aroma were concentrated, in a fraction amounting to some 5% of the fermented shell‐free cocoa bean, by solvent extraction and dialysis. The concentrate, which was soluble in both methanol and water, comprised sugars, amino acids, and flavonoids, and produced chocolate aroma when heated. Examination of unfermented cocoa bean revealed significant differences in these components prior to fermentation.
Perception of Complex Sounds in Autism: Abnormal Auditory Cortical Processing in Children (2004)

For the first time to their knowledge, an activation study was performed in children with autism and has confirmed previous results obtained in adults. The abnormal cortical auditory processing observed in both children and adults with autism could be involved in inadequate behavioral responses to sounds and in language impairments characteristic of autism.
A versatile synthon for chemoselective N-acylation reagents, 2-fluoro-N-mesylaniline (1998)

K. Kondo, E. Sekimoto, K. Miki and Y. Murakami, J. Chem. Soc., Perkin Trans. 1, 1998, 2973 DOI: 10.1039/A806186F
Cerebral effects of music during isometric exercise: An fMRI study (2018)

A block-design experiment was conducted using fMRI to examine the brain regions that activate during the execution of an isometric handgrip exercise performed at light-to-moderate-intensity in the presence of music. Nineteen healthy adults (7 women and 12 men; M<sub>age</sub> = 24.2, SD = 4.9 years) were exposed to an experimental condition (music [MU]) and a no-music control condition (CO) in a randomized order within a single session. Each condition lasted for 10 min and participants were required to execute 30 exercise trials (i.e., 1 trial = 10 s exercise + 10 s rest). Attention allocation, exertional responses, and affective changes were assessed immediately after each condition. The BOLD response was compared between conditions to identify the combined effects of music and exercise on neural activity. The findings indicate that music reallocated attention toward task-unrelated thoughts (d = 0.52) and upregulated affective arousal (d = 0.72) to a greater degree when compared to a no-music condition. The activity of the left inferior frontal gyrus (lIFG) also increased when participants executed the motor task in the presence of music (F = 24.65), and a significant negative correlation was identified between lIFG activity and perceived exertion for MU (limb discomfort: r = -0.54; overall exertion: r = -0.62). The authors hypothesize that the lIFG activates in response to motor tasks that are executed in the presence of environmental sensory stimuli. Activation of this region might also moderate processing of interoceptive signals - a neurophysiological mechanism responsible for reducing exercise consciousness and ameliorating fatigue-related symptoms.
Hemodynamic Effect of the Metallopurpurin Snet2 and Light on Transplantable Fanft Induced Bladder Tumor (1990)

Changes in blood flow to transplantable N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide induced bladder tumors growing subcutaneously in the flanks of Fischer CDF (F344/CrlBR) rats were measured after photodynamic therapy with the photosensitizer tin (II) etiopurpurin dichloride using the radioactive microsphere technique. As with the other photosensitizers, hematoporphyrin derivative and chloroaluminum tetrasulfophtalocyanine, tin (II) etiopurpurin dichloride and light caused a rapid decrease in tumor blood flow in this tumor model. The decrease in blood flow occurred whether the vehicle for photosensitizer delivery was an emulsion or a liposome. Systemic heparinization of animals prior to light treatment did not alter changes in tumor blood flow.
Profile Generation from TV Watching Behavior Using Sentiment Analysis (2007)

This paper proposes a method for generating user profile from user's TV watching behavior using sentiment analysis. Personalized technologies such as information recommendation are currently hot topic of Web intelligence. Among them, TV program recommendation is expected to be one of the practical applications in near future, as digital TV service and partner robots providing personalized support are getting into our living environment. The proposed method does not estimate user's interest in a TV program only from its watching time as most of existing methods do, but also from user's utterances by applying sentiment analysis. The method employs fuzzy inference for estimating the user's rating of a TV program. A user profiles with bookmark format is generated based on the estimated rating of TV programs. Experiments are performed by collecting TV watching logs with diary-based approach, and the results show the proposed method can generate a user profile that can reflect user's interests.
Models for integrating wireless sensor networks into the Internet of Things (2017)

Ubiquitous sensing and unique characteristics of wireless sensor networks (WSNs) have led to an increase in application areas such as smart parking, environmental monitoring, automotive industries and sports. In recent years, WSNs have gained more significance as the foundation infrastructure for the Internet of Things (IoT), which has greatly increased the number of connected objects with instantaneous communication and data processing. However, designing energy‐efficient models for integrating WSNs into IoT is a challenging issue due to scalability and interoperability of IoT, and previous approaches designed for WSNs cannot be applied directly. This study proposes two energy‐efficient models for WSNs in the IoT environment: (i) a service‐aware clustering model where individual sensor nodes are assigned roles based on their service delivery; and (ii) an energy‐aware clustering model. Performance evaluation shows better energy efficiency, end‐to‐end delay and network load balance of the proposed models for integrating wireless sensor networks into the IoT protocol compared with low‐energy adaptive clustering hierarchy centralised protocol and fuzzy C‐means clustering protocol.
Heat shock protein 70 induction by valproic acid delays photoreceptor cell death by <i>N</i>‐methyl‐<i>N</i>‐nitrosourea in mice (2014)

Retinal degenerative diseases (RDs) are a group of inherited diseases characterized by the loss of photoreceptor cells. Selective photoreceptor loss can be induced in mice by an intraperitoneal injection of N-methyl-N-nitrosourea (MNU) and, because of its selectivity, this model is widely used to study the mechanism of RDs. Although it is known that calcium-calpain activation and lipid peroxidation are involved in the initiation of cell death, the precise mechanisms of this process remain unknown. Heat shock protein 70 (HSP70) has been shown to function as a chaperone molecule to protect cells against environmental and physiological stresses. In this study, we investigated the role of HSP70 on photoreceptor cell death in mice. HSP70 induction by valproic acid, a histone deacetylase inhibitor, attenuated the photoreceptor cell death by MNU through inhibition of apoptotic caspase signals. Furthermore, HSP70 itself was rapidly and calpain-dependently cleaved after MNU treatment. Therefore, HSP70 induction by valproic acid was dually effective against MNU-induced photoreceptor cell loss as a result of its anti-apoptotic actions and its ability to prevent HSP70 degradation. These findings might help lead us to a better understanding of the pathogenic mechanism of RDs. Retinal degenerative diseases are characterized by the loss of photoreceptor cells. We proposed the following cascade for N-methyl-N-nitrosourea (MNU)-induced photoreceptor cell death: MNU gives rise to cleavage of heat shock protein 70 (HSP70); HSP70 induction by valproic acid (VPA) is dually effective against MNU-induced photoreceptor cell loss because of its anti-apoptotic actions and its ability to prevent HSP70 degradation. We hope that the present study heralds a new era in developing therapeutic tools against retinal degenerative diseases.
The Structure of the First Coordination Shell in Liquid Water (2004)

X-ray absorption spectroscopy and x-ray Raman scattering were used to probe the molecular arrangement in the first coordination shell of liquid water. The local structure is characterized by comparison with bulk and surface of ordinary hexagonal ice Ih and with calculated spectra. Most molecules in liquid water are in two hydrogen-bonded configurations with one strong donor and one strong acceptor hydrogen bond in contrast to the four hydrogen-bonded tetrahedral structure in ice. Upon heating from 25 degrees C to 90 degrees C, 5 to 10% of the molecules change from tetrahedral environments to two hydrogen-bonded configurations. Our findings are consistent with neutron and x-ray diffraction data, and combining the results sets a strong limit for possible local structure distributions in liquid water. Serious discrepancies with structures based on current molecular dynamics simulations are observed.
Design of an Intein that Can Be Inhibited with a Small Molecule Ligand (2005)

Protein splicing is a process in which an intervening sequence, the intein, catalyzes its own excision out of a larger polypeptide precursor by joining the flanking sequences, the exteins, with a native peptide bond. Inteins are almost completely promiscuous toward the nature of their extein sequences and can be inserted into virtually any host protein. The intein-mediated formation of a peptide bond between two polypeptides offers great potential to modulate protein structure and, hence, protein function on the post-translational level. In this work, we report the design of an intein that can be inhibited by the addition of a specific small molecule ligand. Our design strategy involved the generation of a trans-splicing intein, in which the intein domain is split into two-halves that are located on two separate polypeptides, each joined with the respective N- or C-terminal extein. To turn these fragments into an active intein with an incorporated "off" switch, each was fused at its newly created terminus with the F36M mutant of FKBP12, referred to as the FM domain. The F36M substitution was reported to effect a homodimerization of the usually monomeric FKBP12 protein; however, addition of the small molecule ligand, rapamycin, or synthetic derivatives thereof leads to a dissociation of the dimer. This phenomenon was exploited by first reconstituting the active intein on the basis of FM domain dimerization. Second, addition of the small molecule ligand prevented formation of the active intein complex and inhibited protein trans-splicing. This intein exhibited unexpected kinetic properties and provides a new and potentially very general means to control protein function on the post-translational level.
Embryonic stream processing using morphogens (2010)

Stream processing has been shown to be a computing paradigm that is well suited to the distributed processing of massive amounts of continuous real-time data. In stream processing, tasks are distributed across processing nodes and the information flow passes from task to task. The allocation of tasks to nodes has typically been carried out by a centralized task manager. Whilst this allocation approach has allowed optimization of the task allocation for constrained domains, it is likely to suffer problems as the complexity of the processing tasks and the scale of the network rise and the network becomes more dynamic. In this paper we explore the potential for a distributed autonomous task allocation based on an embryonic approach combined with a node differentiation that uses reaction-diffusion techniques. In this approach each processing node contains a full description of the processing tasks, and determines its own optimal role based on interactions with its neighbors. We describe the approach and provide preliminary results that indicate that it is likely to provide elegant scalability and therefore warrants further consideration.
Determination of Optimum Crop Mix Using Linear (LP) Programming among Small Holder Farmers in Agricultural Zone Four of Adamawa State, Nigeria (2019)

Linear programming was applied to farm data collected from 120 smallholder farmers in 2017/18 cropping season in agricultural zone four (4) of Adamawa state, Nigeria for the purpose of identifying optimal crop mix to maximize revenue. A total of twenty (20) cropping enterprises were identified in the existing cropping pattern, fifteen (15) mixed and five (5) sole cropping enterprises. Popular enterprises identified included four mixed and two sole cropping enterprises and all the six enterprises showed positive net return. The result of the linear programming analysis however, showed that the optimal farm plan at observed maximum resource levels admitted only groundnut and sorghum in the final plan to be produced at 2 hectares with an associated total gross margin of N478, 380.00. In the sensitivity analysis identified with the observed maximum resource level, land was the only binding resource in the final plan. The optimal farm plan at observed average resource levels showed that three enterprises; groundnut/sorghum, maize/sorghum and sole maize were admitted in the final plan under 0.45ha, 0.21ha and 0.17ha, respectively. The associated total gross margin was N153, 003.99. In the sensitivity analysis associated with the observed average resources, only NPK, SSP, Laraforce were binding resources. The study recommended that the optimum enterprises and resources combination obtained in the Linear Programming output should be extended to the farmers to enhance their profit level, beside; farmers should be encouraged through adequate support and promotions to improve the production techniques of these recommended enterprises.
First-order layout: from imagery to achromatism to athermalization to cost (1992)

The arrangment of the components in an optical system often predetermines the nature of the optical design. The methods and relationships used to determine a suitable layout are presented.
MetaBoot: a machine learning framework of taxonomical biomarker discovery for different microbial communities based on metagenomic data (2015)

As more than 90% of species in a microbial community could not be isolated and cultivated, the metagenomic methods have become one of the most important methods to analyze microbial community as a whole. With the fast accumulation of metagenomic samples and the advance of next-generation sequencing techniques, it is now possible to qualitatively and quantitatively assess all taxa (features) in a microbial community. A set of taxa with presence/absence or their different abundances could potentially be used as taxonomical biomarkers for identification of the corresponding microbial community’s phenotype. Though there exist some bioinformatics methods for metagenomic biomarker discovery, current methods are not robust, accurate and fast enough at selection of non-redundant biomarkers for prediction of microbial community’s phenotype. In this study, we have proposed a novel method, MetaBoot, that combines the techniques of mRMR (minimal redundancy maximal relevance) and bootstrapping, for discover of non-redundant biomarkers for microbial communities through mining of metagenomic data. MetaBoot has been tested and compared with other methods on well-designed simulated datasets considering normal and gamma distribution as well as publicly available metagenomic datasets. Results have shown that MetaBoot was robust across datasets of varied complexity and taxonomical distribution patterns and could also select discriminative biomarkers with quite high accuracy and biological consistency. Thus, MetaBoot is suitable for robustly and accurately discover taxonomical biomarkers for different microbial communities.