gebhart/patrepeval huggingface dataset:
Scenic photo quality assessment with bag of aesthetics-preserving features (2011)

In this paper, an aesthetic modeling method for scenic photographs is proposed. A bottom-up approach is developed to construct an aesthetic library with bag-of-aesthetics preserving features instead of top-down methods that implement the heuristic guidelines (rule-specific features) listed in the photography literature, which is employed in previous works. The proposed method can cover both implicit and explicit aesthetic features with a learning process. The experimental results show that the proposed features in the library (92.06% in accuracy) outperform the state-of-the-art rule-specific features (83.63% in accuracy) significantly in the aesthetic quality assessment for scenic photos, and the rule-specific features are also proved to be encompassed by the proposed features. Meanwhile, it is observed from experiments that the features extracted for contrast information are more effective than those for absolute information, which is consistent with the properties of human visual systems.
Quantitative Imaging of Cerebral Blood Flow Velocity and Intracellular Motility using Dynamic Light Scattering–Optical Coherence Tomography (2013)

This paper describes a novel optical method for label-free quantitative imaging of cerebral blood flow (CBF) and intracellular motility (IM) in the rodent cerebral cortex. This method is based on a technique that integrates dynamic light scattering (DLS) and optical coherence tomography (OCT), named DLS-OCT. The technique measures both the axial and transverse velocities of CBF, whereas conventional Doppler OCT measures only the axial one. In addition, the technique produces a three-dimensional map of the diffusion coefficient quantifying nontranslational motions. In the DLS-OCT diffusion map, we observed high-diffusion spots, whose locations highly correspond to neuronal cell bodies and whose diffusion coefficient agreed with that of the motion of intracellular organelles reported in vitro in the literature. Therefore, the present method has enabled, for the first time to our knowledge, label-free imaging of the diffusion-like motion of intracellular organelles in vivo. As an example application, we used the method to monitor CBF and IM during a brief ischemic stroke, where we observed an induced persistent reduction in IM despite the recovery of CBF after stroke. This result supports that the IM measured in this study represent the cellular energy metabolism-related active motion of intracellular organelles rather than free diffusion of intracellular macromolecules.
Cross-Regulation-Suppression control scheme for CCM Single-Inductor-Dual-Output buck converter with ordered-power-distributive control (2011)

A Single-Inductor-Dual-Output (SIDO) buck converter with Cross-Regulation-Suppression (CRS) control scheme is presented. The converter operates in continuous-conduction-mode (CCM) and employs ordered-power-distributive control (OPDC) to distribute the inductor current to the two outputs. The novel CRS control method is used to suppress the cross-regulation (CR) of the SIDO which is an important issue in OPDC CCM converter design. On-chip type-III compensator is incorporated in the SIDO converter to eliminate off-chip components and accelerate system response. The CRS controlled converter is fabricated with AMS 0.35μm CMOS process and operates at 2MHz. Measurement results show that this converter achieves a cross-regulation down to 0.056mV/mA with 180mA load current changes and a response time less than 20μs. The maximum efficiency is 91.8%.
Developments in the use of Y-chromosome markers in forensic genetics (2004)

Sexual assault is a significant problem facing South African society. The South African Police service indicates that between April 2003 and March 2004 over 52 733 rapes were reported. Our research focuses on the development and implementation of genetic identity testing systems for use in sexual assault cases. Genetic identity testing is achieved by examining polymorphic regions of DNA. Typically sets of polymorphisms are examined together to provide a genetic profile. The polymorphic markers most commonly used lie on the autosomal (1-22) chromosomes. While they have an excellent capacity to distinguish between individuals they do have disadvantages. In sexual assault cases it is often difficult to separate the female victim\'s profile from the rapist\'s profile. Analysis of Y-chromosome markers overcomes this by generating male specific profiles. In this review we highlight recent developments in the use of Y-chromosome markers in forensic genetics. Key Words: Polymorphism, Y-chromosome, markers, South African. African Journal of Biotechnology Vol.3(12) 2004: 637-642
Reflections on the Medieval Empire (1964)

If it is true that any worth-while historiographical analysis aims at a better understanding of past events or institutions, the present subject is in no need of justification. For it is admitted on all sides that the medieval empire constituted within the central medieval period a historic entity which to a very large extent shaped and influenced the destiny of many parts of Central, Eastern and Southern, and to a lesser extent also of Western, Europe. No particular effort is required to visualize what great attraction the vast extent of the medieval empire, whose core was thoroughly German, can easily exercise upon minds which are susceptible to the view that the present should continue the past. Amongst German historians there has been for exactly a century an almost morbid obsession with the medieval empire, not, however, in its purely historical setting, but in its bearing upon modern Germany. Why was it that German historians have debated the question so hotly whether or not medieval imperial policy was justified? After all, to all intents and purposes the medieval empire has been dead for more than 600 years: why should it then provoke so much excitement, so much heartsearching, so much emotional historiography? Nothing even faintly resembling this phenomenon do we find in English or French historiography.
Effect of Vehicle on Diclofenac Sodium Permeation from New Topical Formulations: In Vitro and In Vivo Studies (2009)

In this study the effect of vehicle on in vitro diffusion of diclofenac sodium (DS) from new different formulations such as Carbopol gel (A), Sodium lauryl sulphate cream (B) and Carbopol cream (C) was evaluated with Franz diffusion cells using hydrophilic and hydrophobic synthetic membranes. The commercial formulation Voltaren Emulgel was used as reference. Furthermore, the in vivo efficacy of topical formulations was studied in the carrageenan-induced edema and hyperalgesia, whereas the antinociceptive effect was evaluated on thermal pain threshold in rat paw. The flux of DS across hydrophilic membranes showed this rank order: Control approximately equal to C > A approximately equal to B. On the other hand, the diffusion rate of DS across hydrophobic membranes resulted in the following order: Control > B > A approximately equal to C; this suggested a lower interaction between the vehicles and these membranes. The in vivo results indicated that the prepared formulations failed in the inflammatory tests to reduce the development of edema. Nevertheless, treatment with B formulation inhibited the development of acute hyperalgesia induced by carrageenan, and elicited a significant increase in paw withdrawal latencies whereas other formulations were ineffective. The results obtained in this study suggest that Sodium lauryl sulphate cream might be useful in local pain conditions and may be an effective alternative to the presently used systemic routes.
Drug Release from Electric-Field-Responsive Nanoparticles (2011)

We describe a new temperature and electric field dual-stimulus responsive nanoparticle system for programmed drug delivery. Nanoparticles of a conducting polymer (polypyrrole) are loaded with therapeutic pharmaceuticals and are subcutaneously localized in vivo with the assistance of a temperature-sensitive hydrogel (PLGA-PEG-PLGA). We have shown that drug release from the conductive nanoparticles is controlled by the application of a weak, external DC electric field. This approach represents a novel interactive drug delivery system that can show an externally tailored release profile with an excellent spatial, temporal, and dosage control.
A Simple Method to Establish Short-Term Cultures of Normal Human Colonic Epithelial Cells from Endoscopic Biopsy Specimens: Comparison of Isolation Methods, Assessment of Viability and Metabolic Activity (2000)

We report a simple method to establish culture of human colonic epithelial cells from endoscopically obtained biopsy specimens, producing sufficient viable cells to perform metabolic studies pertinent to the pathogenesis of IBD and related human disorders.
An investigation of selected mechanical and physical properties of young, unseasoned and finger-jointed Eucalyptus grandis timber (2013)

South Africa is a timber scarce country that will most probably experience a shortage of structural timber in the near future.In this study the concept of using young finger-jointed Eucalyptus grandis timber was evaluated for possible application in roof truss structures while the timber is still in the green, unseasoned state.220 finger-jointed boards of cross-sectional dimension 48 x 73 mm and 36 x 111 mm timber, cut from 5-18 year old Eucalyptus grandis trees were obtained from Limpopo province, South Africa.The boards were manufactured using a polyurethane (PU) adhesive at moisture content levels above fibre saturation point and no drying was performed.The objectives of this study were to determine various mechanical and physical properties of this finger-jointed product.More specifically (1) to determine the strength and stiffness potential of the product in the wet and the dry condition, (2) to evaluate physical properties such as density, warp, checking and splitting, (3) to evaluate potential indicator properties to be used as structural grading parameters, and (4) to compare the flexural properties to the current SA pine resource and SANS structural grade requirements.The boards were divided into two groups of the same size, which constituted the wet and the dry samples.Each sample was further separated into six different groups for testing the different strength and stiffness properties.The dry group was stacked in a green-house for nine weeks until equilibrium moisture content was reached.Afterwards selected physical properties such as warp, checking and splitting were assessed.Destructive testing was conducted on the boards and the results were used to determine various mechanical properties.Finally, each board was assessed for density and moisture content (MC) values.The study showed that the young finger-jointed Eucalyptus grandis timber had very good flexural properties.Both mean modulus of elasticity (MOE) and modulus of rupture (MOR) 5 th percentile strength values for wet and dry boards complied with the current SANS 10163-1 (2003) requirements for grade S7.The values of tensile perpendicular to grain and compression perpendicular to grain strength did not conform to SANS requirements for grade S5.The other strength properties for the wet and dry groups complied with one of the three SANS structural grades.The 5 year old (48 x 73 mm) boards' showed significantly higher levels of twist and checking compared to 11 year old boards of the same dimension.Only 46.3% of the finger-jointed products conformed to the density requirements in SANS 1783-2 (2004) for grade S7.There was a significant difference in density between the three age groups
Implementation of system-level fault diagnostics in vehicles on a generic test platform (2011)

In order to verify the effectiveness of the system-level fault diagnostic method which has been designed for the self-healing vehicle (SHV) concept, this paper describes the implementation of the designed diagnostic method on a generic test platform (GTP). The platform represents the distributed and networked electronic control system of a real vehicle. The more important is that in this platform the functions of an individual network node and the whole networked system are able to be configured to operate in different scenarios. This enables the platform to mimic a real vehicle system in the presence of faults which is indispensable for the validation of a diagnostic method.
L-band multiwavelength fiber laser using an elliptical fiber (2002)

In this letter, we propose and demonstrate a simple and novel technique to get multiwavelength operation in the L-band by using an elliptical core erbium-doped fiber. The principle of operation is based on the anisotropic gain effect in a polarization-maintaining fiber. Stable multiwavelength operation is achieved at room temperatures. The lasing lines may be controlled by a polarization controller.
Lensing galaxies: light or dark? (1998)

In a recent paper, Hawkins (1997) argues on the basis of statistical studies of double-image gravitational lenses and lens candidates that a large population of dark lenses exists and that these outnumber galaxies with more normal mass-to-light ratios by a factor of 3:1. If correct, this is a very important result for many areas of astronomy including galaxy formation and cosmology. In this paper we discuss our new radio-selected gravitational lens sample, JVAS/CLASS, in order to test and constrain this proposition. We have obtained ground-based and HST images of all multiple-image lens systems in our sample and in 12 cases out of 12 we find the lensing galaxies in the optical and/or near infrared. Our success in finding lensing galaxies creates problems for the dark lens hypothesis. If it is to survive, two ad hoc modifications seem to be necessary. First, only very massive galaxies (more than about one trillion solar masses) can be dark, and the cutoff in mass must be sharp; second, dark lenses must have less elliptical mass distributions than the bulk of the lensing galaxy population. The fact that lenses are found in all the radio selected systems but not in most of the wide separation optically-selected systems makes it likely that at least some of the latter are pairs of physically distinct quasars rather than lensed images of a single object.
Nonlinear relationship between emotional valence and brain activity: Evidence of separate negative and positive valence dimensions (2009)

Emotion plays a significant role in goal-directed behavior, yet its neural basis is yet poorly understood. In several psychological models the cardinal dimensions that characterize the emotion space are considered to be valence and arousal. Here 3T functional magnetic resonance imaging (fMRI) was used to reveal brain areas that show valence- and arousal-dependent blood oxygen level dependent (BOLD) signal responses. Seventeen healthy adults viewed pictures from the International Affective Picture System (IAPS) for brief 100 ms periods in a block design paradigm. In many brain regions BOLD signals correlated significantly positively with valence ratings of unpleasant pictures. Interestingly, partly in the same regions but also in several other regions BOLD signals correlated negatively with valence ratings of pleasant pictures. Therefore, there were several areas where the correlation across all pictures was of inverted U-shape. Such correlations were found bilaterally in the dorsolateral prefrontal cortex (DLPFC), dorsomedial prefrontal cortex (DMPFC) extending to anterior cingulate cortex (ACC), and insula. Self-rated arousal of those pictures which were evaluated to be unpleasant correlated with BOLD signal in the ACC, whereas for pleasant pictures arousal correlated positively with the BOLD signal strength in the right substantia innominata. We interpret our results to suggest a major division of brain mechanisms underlying affective behavior to those evaluating stimuli to be pleasant or unpleasant. This is consistent with the basic division of behavior to approach and withdrawal, where differentiation of hostile and hospitable stimuli is crucial.
ICP: still the panacea for trace metals analysis? (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTICP: still the panacea for trace metals analysis?Gerhard A. MeyerCite this: Anal. Chem. 1987, 59, 23, 1345A–1354APublication Date (Print):December 1, 1987Publication History Published online22 September 2008Published inissue 1 December 1987https://doi.org/10.1021/ac00150a001RIGHTS & PERMISSIONSArticle Views383Altmetric-Citations11LEARN 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 (9 MB) Get e-Alerts Get e-Alerts
Immunomodulating Components From Chinese Medicines (2000)

Modern scientific studies have shown that several components from Chinese herbal medicines are immunologically active. Astragalus mongholicus polysaccharide APS, a polymer of glucose and arabinose, increases specific antibody formation as well as synthesis of RNA, DNA and protein in mouse spleen. The polysaccharide PES isolated from Acanthopanax senticosus used as a tonic and sedative agent also induces interferon production. An oligosaccharide AbPS isolated from Achyranthes bidentata with a mw of only 1360 Da significantly enhances the humoral immune response and antagonizes the immunosuppressive effects of cyclosporin A. AbPS increases the production of TNF and the activity of NK cells. In tumor patients treated by chemotherapy or radiotherapy, AbPS maintained their peripheral white blood cell count and improved the quality of life. PSP, the protein bound polysaccharide extracted from Coriolus versicolor , has been developed as an anticancer drug in China. It promoted T cell proliferation, increased NK and LAK cell activities as well as anticancer cytokines IL-2, IL-6, IFN-? and TNF-a production so as to induce tumor cell apoptosis. Celastrol, a triterpene compound isolated from Tripterygium wilfordii was proven to be an equally-strong immunosuppressor and inhibited free radical damage in experimental arthritis. Ginkgo biloba extract improves cognitive functions. Ginkgolide A and B inhibited IL-1, TNF-a and nitric oxide production in rat microglia and prevented the chronic inflammatory process in neurodegenerative diseases.
Simultaneous Measurement of Gastric Acid and Bicarbonate Secretion in Man (1989)

Experiments were performed to validate the computerized pH/PCO2 technique for measurement of HCO3 secretion at a physiologic pH in the human stomach. In bench-side experiments the system detected 103 +/- 2% (mean +/- SE, n = 66) of boluses or infusions of NaHCO3. The standard curve was linear in the physiologic concentration range, and in the pH interval from 1.8 to 6.9 the recovery rate of added HCO3 was independent of the pH of the aspirate. In vivo the recovery rate of an exogenous NaHCO3 infusion (240 mumol/15 min) was 95 +/- 5% (n = 9), and there was no significant correlation between basal gastric pH and recovery rate. The results support that our computerized gastric perfusion method can be used for quantification of gastric bicarbonate secretion also at a physiologic acid pH.
Inter-Frame, Fine Frequency/Phase Synchronization forSimple Space-Time-Coded OFDM Receivers (2007)

This paper proposes an enhanced receiver (Rx) configuration for multiple-input, multiple-output (MIMO) OFDM systems, operating under the composite effect of phase noise (PHN), residual frequency offset (RFO) and the transmission channel, herein modeled as quasi-static but unknown. The proposed Rx identifies the different impairments by exploiting their different time constants and compensates for each one accordingly. It includes a novel inter-frame fine frequency synchronization (FFS) scheme, which is closely coupled to an intra-frame adaptive phase synchronizer/channel estimator. The proposed scheme is evaluated for a 2 times 2, Alamouti space-time code (STC), and is shown to provide significant performance gain. The theory can be employed with any other STC scheme.
Authority Control of People and Organizations on the Semantic Web (2009)

Authors and documents with identical titles are common in the digital library environment. In order to manage identities correctly, authority control is used by library and information scientists for disambiguating and cross-referencing entity names. We argue that the benefits of traditional authority control can be enhanced by using techniques and technologies of the Semantic Web, leading to simpler management of multiple languages, better linkability of resources, simpler reuse of authority registries in applications, and less work in indexing. To demonstrate our propositions, we have created a prototype of an ontology server and service called ONKI People that is used in two ways: First, it is a centralized authority service providing human end-users with efficient and easy to use authority finding and disambiguation services based on faceted semantic search and visualizations. The services are available online also as AJAX and Web Services API for machines to use. Second, the underlying RDF triple store can be used as a content resource in applications
Comparisons of Potentials for<scp>L</scp>-Lysine Production among Different<i>Corynebacterium glutamicum</i>Strains (2006)

Corynebacterium glutamicum is an industrially important organism that is most widely used for the production of various amino acids. A defined L-lysine-producing mutant was generated by introduction of the lysC mutation (T311I) into each of six representative C. glutamicum strains. The resulting six isogenic mutants were compared for L-lysine production under traditional 30 degrees C conditions and industrially more advantageous 40 degrees C conditions. It was found that there were significant differences in yield and productivity, especially at 40 degrees C. These results indicate the diversity among C. glutamicum strains in fermentative characters, as well as the importance of selecting a strain with industrially best performance.
Compensating Optical Systems Part1: Broadband Holographic Reconstruction (1972)

The primary chromatic aberrations of a reconstructed holographic image can be compensated by a dispersive lens placed at the quasi-achromatic (QA) point of a hologram. The conditions for obtaining this compensation are derived. Three experimental systems that employ this compensation are discussed. Two of these are in line and use either a zone plate lens or flint glass lens as the dispersive element centered at the QA point. In the third system, an off-axis hologram is followed by an off-axis zone plate lens positioned at the offset QA point.