gebhart/patrepeval huggingface dataset:
A New Control Strategy for Improving Weighted Efficiency in Photovoltaic AC Module-Type Interleaved Flyback Inverters (2012)

In this paper, a new control strategy for improving weighted efficiency in photovoltaic (PV) ac module-type interleaved flyback inverters (ILFIs) is proposed. The efficiency of the ILFI for PV ac modules has to be high, not only for the maximum power, but also for other power levels according to weather conditions. For PV power conversion efficiency improvement in all load ranges, a new control method for an ILFI according to the output of the PV module is proposed in this paper. The proposed method controls an active clamp circuit and each converter phase of an ILFI according to the output power of the PV module. Thus, the efficiency of an ILFI as a PV power conditioner can be improved in all power range of the PV module. Theoretical analysis, simulation, and experiment are performed in order to verify the proposed control method.
ChemInform Abstract: Reactivity of 3‐Iodoimidazo[1,2‐a]pyridines Using a Suzuki‐Type Cross‐Coupling Reaction. (2001)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
STRUCTURE OF NERVE FIBRES AND SYNAPSES IN SOME INVERTEBRATES (1936)

Although our knowledge of biological structure has long ceased to be limited to analysis into parts which can be seen directly with the eyes, and has been extended to the study of molecular structure, yet there are still large divisions of physiology whose development is being retarded by lack of histological data in the old sense, data about the visible structure of tissues. In the present state of nerve physiology there are a great many subjects about which such histological information is urgently needed. For instance, we are still far from agreement even as to the visible structure of axons, and the histologist may have an important contribution to make to the search for surfaces, on the outside of, or within, the neuron, which are likely to provide polarised membranes whose progressive depolarisation might constitute the propagated nerve impulse. The study of the localisation of inorganic ions or other substances...
Rate Control Using Spline-Interpolated R-D Characteristics (1996)

Digital video&apos;s increased popularity has been driven large to a extent by a flurry of recently proposed international standards. In most standards, the rate control scheme, which plays an important role for improving and stabilizing the decoding and play-back quality, is usually not defined. Several techniques have been proposed to aim at the best possible quality for a given channel rate and buffer size. These approaches are complex in that they require the R-D characteristics of the input data to be measured. In this paper, we propose a method to approximate the rate and distortion functions to reduce the complexity of the optimization procedures while making a minimal number of a priori assumptions on the source data. In the proposed method, the R-D of image frames is approximated by spline interpolation functions, and inter-frame dependency (for P or B frames in MPEG) are modeled by a linear-constant function. The application to gradient-based rate-control scheme for MPEG shows that, for a typical MPEG encoder, by using the proposed model, the same performance can be achieved with only about 10 to 15 percent of computation cost.
Handbook of Underwater Imaging System Design (1972)

The present study confirms the high prevalence of LVH in patients with mild or moderate renal dysfunction. In the patients studied (all with a GFR of 30 mL/min per 1.73 m(2)), the association between LVM and GFR was independent of potential confounders, including 24 h blood pressure load. Taking into account the negative prognostic impact of LVH, further studies focusing on a deeper comprehension of the mechanisms underlying the development of LVH in chronic kidney disease patients are needed.
Surprises of genetic engineering (2001)

An imbalance between GSase and GBE activities is proposed as the mechanism involved in the production of polyglucosan bodies. The authors may have inadvertently created a "muscle polyglucosan disease" by simulating the mechanism for polyglucosan formation.
Detecting Fraud Using Transaction Frequency Data (2014)

Despite all attempts to prevent fraud, it continues to be a major threat to industry and government. In this paper, we present a fraud detection method which detects irregular frequency of transaction usage in an Enterprise Resource Planning (ERP) system. We discuss the design, development and empirical evaluation of outlier detection and distance measuring techniques to detect frequency-based anomalies within an individual user’s profile, relative to other similar users. Primarily, we propose three automated techniques: a univariate method, called Boxplot which is based on the sample’s median; and two multivariate methods which use Euclidean distance, for detecting transaction frequency anomalies within each transaction profile. The two multivariate approaches detect potentially fraudulent activities by identifying: (1) users where the Euclidean distance between their transaction-type set is above a certain threshold and (2) users/data points that lie far apart from other users/clusters or represent a small cluster size, using k-means clustering. The proposed methodology allows an auditor to investigate the transaction frequency anomalies and adjust the different parameters, such as the outlier threshold and the Euclidean distance threshold values to tune the number of alerts. The novelty of the proposed technique lies in its ability to automatically trigger alerts from transaction profiles, based on transaction usage performed over a period of time. Experiments were conducted using a real dataset obtained from the production client of a large organization using SAP R/3 (presently the most predominant ERP system), to run its business. The results of this empirical research demonstrate the effectiveness of the proposed approach.
[An easily and immediately releasable intermaxillary fixation appliance for use after the correction of surgical orthognathic cases of jaw deformity or fracture]. (1988)

In oral surgery, intermaxillary fixation is routinely applied after surgery in cases of surgical orthognathic correction of jaw deformity or fractures. Intermaxillary fixation requires two conflicting factors: Stiff fixation and quick release in an emergency, as in nausea and vomiting. Conventional methods of intermaxillary fixation require multiple stiff ligation after an operation, but in an emergency these ligations can not be cut quickly to free the airway. We have developed a new fixation method placing a third wire (locking bow) above the upper splint or below the lower splint. The locking bow is hooked onto the splint on the unoperated side and firmly ligated to the splint on the jaw being operated upon. The ligatures can be quickly and easily released by pulling out the locking bow. This can be done by the patient himself or another person. This article describes the principles and clinical application of the method. We have found it to be useful in clinical practice.
Enhanced Acidity, Photophysical Properties and Liposome Binding of Perfluoroalkylated Phthalocyanines Lacking C‐H Bonds (2005)

The acid-base, spectroscopic, photophysical and liposome-binding properties of the recently synthesized free base, 29H,31H,1,4,8,11,15,18,22,25-octafluoro-2,3,9,10,16,17,23, 24-octakisperfluoro(isopropyl) phthalocyanine, F64PcH2, are reported. The perfluoroalkylation of the phthalocyanine core renders the hydrogen atoms acidic, with a pK(a) = 6. The F64Pc(-2) dianion is detected already at pH 3, by singular-value decomposition analysis of electronic spectra. F64Pc(-2) generates 1O2 with quantum yields phi(delta) = 0.252 (in MeOH) and 0.019 in liposomes. Metallation of the Pc macrocycle to yield F64PcZn increases phi(delta) to 0.606 and 0.126 in MeOH and liposomes, respectively. Surprisingly, F64Pc(-2) (but not F64PcH2 or F64PcZn) binds strongly to liposomes, with a binding constant K(b) = 25 (mg/mL)(-1). The fully protonated F64PcH2, but not the zwitterionic F64Pc(-2), might favor hydrogen bonding, thus reducing its lipophilicity. Similarly, the Lewis acidity of Zn in F64PcZn, and thus its ability to bind water within a hydrophobic perfluoroalkyl pocket, is significantly enhanced by the fluorinated substituents.
Notice of Violation of IEEE Publication Principles: Motion Vector Estimation of Video Image by Pyramidal Implementation of Lucas Kanade Optical Flow (2009)

Notice of Violation of IEEE Publication Principles<br><br> "Motion vector estimation of video image by Pyramidal implementation of Lucas Kanade Optical flow"<br> by Sukeshini N.Tamgade and Vibha R. Bora<br> in the Proceedings of the 2nd International Conference on Emerging Trends in Engineering and Technology (ICETET), January 2009, pp.914-917<br><br> After careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.<br><br> This paper duplicates content from the paper cited below. The original content was copied without attribution (including appropriate references to the original author(s) and/or paper title) and without permission.<br><br> "Pyramidal Implementation of the Affine Lucas Kanade Feature Tracker Description of the Algorithm"<br> by Jean-Yves Bouguet<br> in Intel Corporation-Microprocessor Research Labs Report, January 2001<br><br> <br/> Motion vector estimation is an important parameter for video segmentation. Effective video compression can be achieved by choosing a correct approach for the calculation of motion vector. Here in this paper we propose an optical flow motion vector estimation through iterative Lucas-Kanade Pyramidal implementation for both large & small motion In image pyramid representation a group of pixel information is gradually reduced to a value of one pixel information for both current & reference frame. The velocity & displacement at each pixel is obtained by using Lucas-Kanade equations. The original image is recovered by warping reference frame towards current frame using flow vectors i.e. velocity & displacement by using image warping techniques. The process is repeated until convergence. An iterative implementation is shown which successfully computes the optical flow for a number of synthetic image sequences.
Statistical properties of community structure in large social and information networks (2008)

A large body of work has been devoted to identifying community structure in networks. A community is often though of as a set of nodes that has more connections between its members than to the remainder of the network. In this paper, we characterize as a function of size the statistical and structural properties of such sets of nodes. We define the network community profile plot, which characterizes the “best ” possible community—according to the conductance measure—over a wide range of size scales, and we study over 70 large sparse real-world networks taken from a wide range of application domains. Our results suggest a significantly more refined picture of community structure in large real-world networks than has been appreciated previously. Our most striking finding is that in nearly every network dataset we examined, we observe tight but almost trivial communities at very small scales, and at larger size scales, the best possible communities gradually “blend in ” with the rest of the network and thus become less “community-like.” This behavior is not explained, even at a qualitative level, by any of the commonly-used network generation models. Moreover, this behavior is exactly the opposite of what one would expect based on experience with and intuition from expander graphs, from graphs that are well-embeddable in a low-dimensional structure, and from small social networks that have served as testbeds of community detection algorithms. We have found, however, that a generative model, in which new edges are added via an iterative “forest fire” burning process, is able to produce graphs exhibiting a network community structure similar to our observations.
ELASTIC VESICLES AS DRUGS CARRIERS THROUGH THE SKIN (2010)

Transdermal administration of drugs is generally limited by the barrier function of the skin. Vesicular systems are one of the most controversial methods for transdermal delivery of active substances. The interest in designing transdermal delivery systems was relaunched after the discovery of elastic vesicles: transferosomes and ethosomes. This paper presents the composition, manufacturing and characterization methods, mechanisms of penetration of transferosomes and ethosomes as transdermal delivery systems of active substances. Rezumat Administrarea transdermica a medicamentelor este in principal limitata de funcţionarea pielii ca o bariera. Sistemele veziculare reprezinta una dintre cele mai controversate modalitaţi utilizate pentru transportul transdermic al substanţelor active. Interesul pentru proiectarea de sisteme veziculare transdermice a fost relansat dupa descoperirea veziculelor elastice: transferozomii si etozomii. Acest articol prezinta compoziţiile, metodele de preparare si caracterizare, precum si mecanismele de penetraţie ale transferozomilor si etozomilor ca sisteme de transport transdermic al substanţelor active.
Efficient one-step preparation of the beer additive tetrahydroiso-.alpha. acids (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEfficient one-step preparation of the beer additive tetrahydroiso-.alpha. acidsBruce A. Hay and John W. HomiskiCite this: J. Agric. Food Chem. 1991, 39, 10, 1732–1734Publication Date (Print):October 1, 1991Publication History Published online1 May 2002Published inissue 1 October 1991https://pubs.acs.org/doi/10.1021/jf00010a007https://doi.org/10.1021/jf00010a007research-articleACS PublicationsRequest reuse permissionsArticle Views162Altmetric-Citations7LEARN 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 optionsGet e-Alertsclose Get e-Alerts
Macrophage MST1/2 Disruption Impairs Post-Infarction Cardiac Repair via LTB4 (2021)

[Figure: see text].
Mechanisms of cell death and treatment prospects in motor neuron disease. (2001)

Scientific evidence is emerging to indicate that motor neuron injury in motor neuron disease may reflect a complex interplay between genetic factors, oxidative stress, and imbalance of the glutamatergic excitatory control of motor neurons, which may result in damage to critical target proteins and organelles. The relative importance of these factors is likely to vary in different subgroups of patients. Protein aggregation may play a role in some forms of motor neuron injury, and the eventual demise of motor neurons may occur by a programmed cell death pathway. Advances in symptomatic therapy for patients with motor neuron disease include the development of specialist clinics, with input from multidisciplinary teams, as well as hospice care in the late stages of the disease. A number of recent therapeutic trials of potential neuroprotective drugs have been conducted, including antiglutamate, antioxidant, and neurotrophic agents. To date, only the antiglutamate agent riluzole has been shown to reproducibly prolong the survival of patients with motor neuron disease. Future therapy in motor neuron disease is likely to include a 'cocktail' of neuroprotective compounds to interfere with several molecular pathway that lead to neuronal injury. In using therapeutic strategies aimed towards retarding or arresting motor neuron disease, close attention will need to be paid to quality of life issues.
Design of Salen-Type Ni(II) Complexes for Recognition of DNA Base Sequence (2007)

The DNA binding properties of cationic salen-type Ni(II) complexes (Fig. 1) have been studied by CD and NMR measurements. The binding constants estimated for poly(dA-dT)2 and poly(dA)poly(dT) revealed that (1) binds more preferentially to poly(dA)poly(dT) than to poly(dA-dT)2, and vice versa for (2). The intermolecular NOE and chemical shift change of the oligonucleotides, d(CGCGAATTCGCG)2 (ODN1) and d(CGCGTATACGCG)2 (ODN2) indicated that the two complexes bound to the minor grooves at AT-rich site of the ODNs from the "en" bridging side. The difference in the sequence specificity between (1) and (2) was attributed to the difference in the width of the minor groove; (2) recognized the wider minor groove of ODN2 'TATA' region. In contrast to (1) and (2), the asymmetric complex (3) bound to the major groove at terminal GC-rich site of ODN1. In this study, we could reveal that hydrophobic interaction is an important factor for base sequence recognition and an appropriate modification of the salen could switch the binding site from minor to major groove of DNA.
Dynamic Malleability in Iterative MPI Applications (2007)

Malleability enables a parallel application's execution system to split or merge processes modifying granularity. While process migration is widely used to adapt applications to dynamic execution environments, it is limited by the granularity of the application's processes. Malleability empowers process migration by allowing the application's processes to expand or shrink following the availability of resources. We have implemented malleability as an extension to the PCM (process checkpointing and migration) library, a user-level library for iterative MPI applications. PCM is integrated with the Internet operating system (IOS), a framework for middleware-driven dynamic application reconfiguration. Our approach requires minimal code modifications and enables transparent middleware- triggered reconfiguration. Experimental results using a two-dimensional data parallel program that has a regular communication structure demonstrate the usefulness of malleability.
Google DeepMind and healthcare in an age of algorithms (2017)

Data-driven tools and techniques, particularly machine learning methods that underpin artificial intelligence, offer promise in improving healthcare systems and services. One of the companies aspiring to pioneer these advances is DeepMind Technologies Limited, a wholly-owned subsidiary of the Google conglomerate, Alphabet Inc. In 2016, DeepMind announced its first major health project: a collaboration with the Royal Free London NHS Foundation Trust, to assist in the management of acute kidney injury. Initially received with great enthusiasm, the collaboration has suffered from a lack of clarity and openness, with issues of privacy and power emerging as potent challenges as the project has unfolded. Taking the DeepMind-Royal Free case study as its pivot, this article draws a number of lessons on the transfer of population-derived datasets to large private prospectors, identifying critical questions for policy-makers, industry and individuals as healthcare moves into an algorithmic age.
LXXXIX.<i>On negative resistance equalizers for telephone transmission system</i> (1937)

Summary The paper relates to the application of “negative resistance” and “negative inductance” in the development of attenuation equalizer elements for telephone transmission systems. Non-reactive impedances of the type Z=±ω 2 (L2/r) are obtained from combinations of positive and negative circuit constants. Attenuation, increasing gradually with frequency, is obtained by connecting an impedance of the type Z=ω 2 (L2/r) in a circuit containing a source of A.C. power of internal resistance Z0, a load resistance Z0, and an additional adjustable resistance r 1 Attenuation, decreasing gradually with frequency, is obtained by connecting an impedance of the type Z=-ω 2 (L2/r) in a circuit similar to that described above. Resistances r and r 1 control the form of characteristics.
Understanding Organizational Dynamics of IT-Enabled Change: A Multimedia Simulation Approach (1997)

:Successful implementation of IT-enabled change requires good management of the change process and of the various sources of resistance that typically accompany the introduction of such change. As a result, helping managers better understand the dynamics of organizational processes is an important objective for IS and IT educators. The EIS Simulation is a new computer-based multimedia simulation that allows managers to experience the process of introducing an EIS in a fictitious organization. It has been used extensively over the last two years with groups of management students and executives. The paper presents the simulation and discusses its potential pedagogical benefits, possible extensions, and use in a research context. More generally, the EIS Simulation provides a first step in the development of a new generation of pedagogical tools: computer-based organizational games exploiting the potential of multimedia and object-oriented technology to provide managers with realistic experiential learning environments.
Heparan sulfate binding by natural eastern equine encephalitis viruses promotes neurovirulence (2011)

The Alphavirus genus of the family Togaviridae contains mosquito-vectored viruses that primarily cause either arthritogenic disease or acute encephalitis. North American eastern equine encephalitis virus (NA-EEEV) is uniquely neurovirulent among encephalitic alphaviruses, causing mortality in a majority of symptomatic cases and neurological sequelae in many survivors. Unlike many alphaviruses, NA-EEEV infection of mice yields limited signs of febrile illness typically associated with lymphoid tissue replication. Rather, signs of brain infection, including seizures, are prominent. Use of heparan sulfate (HS) as an attachment receptor increases the neurovirulence of cell culture-adapted strains of Sindbis virus, an arthritogenic alphavirus. However, this receptor is not known to be used by naturally circulating alphaviruses. We demonstrate that wild-type NA-EEEV strain FL91-4679 uses HS as an attachment receptor and that the amino acid sequence of its E2 attachment protein is identical to those of natural isolates sequenced by RT-PCR amplification of field samples. This finding unequivocally confirms the use of HS receptors by naturally circulating NA-EEEV strains. Inactivation of the major HS binding domain in NA-EEEV E2 demonstrated that the HS binding increased brain replication and neurologic disease but reduced lymphoid tissue replication, febrile illness signs, and cytokine/chemokine induction in mice. We propose that HS binding by natural NA-EEEV strains alters tropism in vivo to antagonize/evade immune responses, and the extreme neurovirulence of wild-type NA-EEEV may be a consequence. Therefore, reinvestigation of HS binding by this and other arboviruses is warranted.