gebhart/patrepeval huggingface dataset:
Video enhancement based on saturation adjustment and contrast enhancement (2008)

We propose a new algorithm to improve the visual appearance of compressed videos, which are derived and reproduced from old films. The new technique is especially useful in handling the digitized old films of digital archives. Two main techniques, saturation adjustment and contrast enhancement, are implemented to improve the chrominance and luminance of video frames on HSL color space. For contrast enhancement, we use weighted histogram separation (WHS) to improve the luminance. Subsequently, the saturation ratio transfer function is proposed to adjust the saturation level of every frame. Furthermore, the new calculation method for the error of inter-frame is adopted to avoid the incorrectly enhanced result and the intensive computation consumed in motion estimation. The experimental results demonstrate that the proposed method outperforms the existing approaches in terms of video quality.
THE NEUROLOGICAL MANIFESTATIONS OF CERVICAL SPONDYLOSIS (1952)

Journal Article THE NEUROLOGICAL MANIFESTATIONS OF CERVICAL SPONDYLOSIS Get access W. RUSSELL BRAIN, W. RUSSELL BRAIN From theNeurological and Neurosurgical Departments and the Bernhard Baron Institute, the London Hospital Search for other works by this author on: Oxford Academic PubMed Google Scholar DOUGLAS NORTHFIELD, DOUGLAS NORTHFIELD From theNeurological and Neurosurgical Departments and the Bernhard Baron Institute, the London Hospital Search for other works by this author on: Oxford Academic PubMed Google Scholar MARCIA WILKINSON MARCIA WILKINSON From theNeurological and Neurosurgical Departments and the Bernhard Baron Institute, the London Hospital Search for other works by this author on: Oxford Academic PubMed Google Scholar Brain, Volume 75, Issue 2, June 1952, Pages 187–225, https://doi.org/10.1093/brain/75.2.187 Published: 01 June 1952
Solution adaptive cartesian grid methods for aerodynamic flows with complex geometries (1997)

Cartesian methods for computational fluid dynamics are considered to offer an accurate and robust approach for the simulation of aerodynamic flows around geometrically complex bodies. A part of the ongoing research in this domain is reviewed with the aim of providing insight into the fundamental challenges faced by the practitioners of this approach, and a guide to further research. The integration schemes used in Cartesian solvers are similar to those used in other approaches. The emphasis is on the geometric algorithms, surface modeling and boundary conditions required to design a successful Cartesian mesh scheme.
Cell lineage and differentiation in taste buds (2006)

Mammalian taste buds are maintained through continuous cell renewal so that taste bud cells are constantly generated from progenitor cells throughout life. Taste bud cells are composed of basal cells and elongated cells. Elongated cells are derived from basal cells and contain taste receptor cells (TRC). Morphologically, elongated cells consist of three distinct types of cells: Types I, II and III. In contrast to the remarkable progress in understanding of the molecular basis for taste reception, the mechanisms of taste bud maintenance have remained a major area of inquiry. In this article, we review the expression of regulatory genes in taste buds and their involvement in taste bud cell differentiation. Three major topics include: 1) the Sonic hedgehog (Shh)-expressing cell in the basal cell in taste buds as a transient precursor of elongated cells and as a signal center for the proliferation of progenitor cells; 2) the Mash1-expressing cell as an immature cell state of both Type II and Type III cells and as a mature cell state of Type III cell; and 3) the nerve dependency of gene expression in taste buds. Problems in the application of NCAM for the type III cell marker are also discussed.
Multicolor Polymer Disperse Microencapsulated Liquid Crystal Displays (2009)

This work develops a new technology to fabricate polymer-dispersed microencapsulated liquid crystal (PDMLC) devices using screen-printing, which is a low temperature procedure (about 90degC) for application on a soft plastic substrate. This research demonstrates numerically and in Mandarin, a 4.5-in multicolor PDMLC (MPDMLC) device with high color contrast, low electric consumption and flexible bending mechanical property. The current work coats three different color pastes (red, blue and black) on a single substrate. Their turn-on voltages are all as low as 5 V and saturation voltages are 20, 30, and 30 V for red, blue, and black colors, respectively.
Self-calibration from image derivatives (2002)

This study investigates the problem of estimating the calibration parameters from image motion fields induced by a rigidly moving camera with unknown calibration parameters, where the image formation is modeled with a linear pinhole-camera model. The equations obtained show the flow to be clearly separated into a component due to the translation and the calibration parameters and a component due to the rotation and the calibration parameters. A set of parameters encoding the latter component are linearly related to the flow, and from these parameters the calibration can be determined. However, as for discrete motion, in the general case it is not possible, to decouple image measurements from two frames only into their translational and rotational component. Geometrically, the ambiguity takes the form of a part of the rotational component being parallel to the translational component, and thus the scene can be reconstructed only up to a projective transformation. In general, for a full calibration at least four successive image frames are necessary with the 3D-rotation changing between the measurements. The geometric analysis gives rise to a direct self-calibration method that avoids computation of optical flow or point correspondences and uses only normal flow measurements. In this technique the direction of translation is estimated employing in a novel way smoothness constraints. Then the calibration parameters are estimated from the rotational components of several flow fields using Levenberg-Marquardt parameter estimation, iterative in the calibration parameters only. The technique proposed does not require calibration objects in the scene or special camera motions and it also avoids the computation of exact correspondence. This makes it suitable for the calibration of active vision systems which have to acquire knowledge about their intrinsic parameters while they perform other tasks, or as a tool for analyzing image sequences in large video databases.
Template-driven teacher modelling approach : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Information Science at Massey University, Palmerston North (2004)

This thesis describes the Template-driven Teacher Modeling Approach, the initial implementation of the template server and the formative evaluation on the prototype. The initiative of Template-driven teacher modeling is to integrate the template server and intelligent teacher models in Web-based education systems for course authoring. There are a number of key components in the proposed system: user interface, template server and content repository. The Template-Driven Teacher Modeling (TDTM) architecture supports the course authoring by providing higher degree of control over the generation of presentation. The collection of accumulated templates in the template repository for a teacher or a group of teachers are selected as the inputs for the inference mechanism in teacher's model to calculate the best representation of the teaching strategy, and then predict teacher intention when he or she interacts with the system. Moreover, the presentation templates are kept to support the re-use of the on-line content at the level of individual screens with the help of Template Server.
Microstructure and Hardness of the Laser Surface Treated Titanium (2007)

This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.
Aerosol Synthesis of Aluminum Nitride Powder Using Metalorganic Reactants (1992)

We describe a new laboratory‐scale aerosol process for making submicrometer AIN powder by reaction of gas phase Al(C 2 H 5 ) 3 and NH 3 . The process can produce spherical, near‐stoichiometric AIN powder with mean particle diameter ranging from 0.07 to 0.20 μm and polydispersity index between 0.2 and 0.5. The inlet TEA concentration is found to have the greatest effect on particle size, with the furnace temperature and carrier gas flow rate having lesser influence. Our results appear to favor a LaMer‐type mechanism (particle nucleation, followed by condensation growth) over fusion‐coalescence to explain particle growth.
Review of the All-Polyethylene Tibial Component in Total Knee Arthroplasty (1990)

A retrospective analysis of 144 total knee arthroplasties was performed between 1975 and 1981 with a minimum follow-up period of seven years. A posterior cruciate condylar prosthesis was used in each procedure. Patients were followed clinically and roentgenographically, and a set of statistical variables was established based on elevation in joint line, tibial component angular alignment, overall limb alignment, and position of the tibial component on anteroposterior and lateral roentgenograms. Review of the study group found that the Hospital for Special Surgery knee scores improved from a preoperative score of 55 to a postoperative score of 88, with 94.5% having good or excellent results. The mean postoperative range of motion was 106° with a mean extension of −0.3°. Radiolucencies developed in 41% of the knees with 5% of the knees having progressive radiolucencies. Eight knees were considered failures based on clinical and roentgenographic evaluations. Factors found to significantly affect the formation of radio-lucent lines included a shift of the tibial component medially by greater than 4 mm, a varus tilt of the tibial component greater than 2°, and the diagnosis of rheumatoid arthritis. The only variable associated with aseptic loosening was an elevation of the joint line by greater than 8 mm.
Monitoring free digoxin instead of total digoxin in patients with congestive heart failure and high concentrations of digoxin-like immunoreactive substances (1990)

Digoxin-like immunoreactive substances (DLIS) are present in patients with conditions associated with volume expansion (including hypervolemic hypertension, renal failure, and liver failure) and in pre-eclampsia and premature birth. These strongly-protein-bound substances cross-react with anti-digoxin antibodies and cause falsely increased measured concentrations of digoxin in serum. Patients with congestive heart failure (CHF) often have volume expansion and are receiving digoxin therapy. They are also very sensitive to digoxin toxicity and have a very narrow therapeutic range (1.0-1.9 nmol/L). We found monitoring the concentrations of free digoxin (in protein-free ultrafiltrates) helpful in eliminating the interferences of DLIS in CHF patients. DLIS concentrations were measured by fluorescence polarization assay. Concentrations of DLIS were detectable in significantly more (58.3%) of the 12 CHF patients (group A) who were not receiving digoxin than in the 22 normal volunteers tested (13.6%) (P less than 0.05 by both chi-square and Fisher's exact test). Protein-free filtrates from patients or normal volunteers did not show any measurable DLIS activities. We also determined the concentrations of total and free digoxin in 12 patients with CHF who were receiving digoxin (group B) and compared the results with those for 22 patients receiving digoxin without the diagnosis of CHF or any known pathological conditions that could increase DLIS concentrations. The ratio of free to total digoxin in patients in group B was significantly lower (mean = 52.8%, SD 10.2%) than in those receiving digoxin (mean = 72.7%, SD 6.5%) for other reasons (independent two-tailed t-test, P less than 0.05).
Minimum Wage Payback (1999)

In lieu of an abstract, below is the essay's first paragraph.\n"'Merry Christmas Kyle' said his parents with a laugh . . ."
A Quadband Antenna With Reconfigurable Feedings (2009)

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> A compact inverted-F antenna (IFA) with switchable feeds is proposed in this letter. The antenna occupies a relatively small volume of 50$\,\times\,$7$\,\times\,$7 mm$^{3}$. Two pin diodes are used to switch the antenna between two different working states. The antenna can provide the required bands of GSM850 (824894 MHz), GSM900 (890960 MHz), DCS (17101880 MHz), and PCS (18501990 MHz) with ${\rm S}11 < {-}10$ dB. Measurements including return loss, radiation patterns, and gain are presented to verify the proposed design of antenna. </para>
Time to Digital Converter used in ALL digital PLL (2011)

This thesis proposes and demonstrates Time to Digital Converters (TDC) with high resolution realized in 65-nm digital CMOS. It is used as a phase detector in all digital PLL working with 5GHz DCO and 20MHz reference input for radio transmitters. Two kinds of high resolution TDC are designed on schematic level including Vernier TDC and parallel TDC. The Sensed Amplifier Flip Flop (SAFF) is implemented with less than 1ps sampling window to avoid metastability. The current starved delay elements are adopted in the TDC and the conversion resolution is equal to the difference of the delay time from these delay elements. Furthermore, the parallel TDC is realized on layout and finally achieves the resolution of 3ps meanwhile it consumes average power 442μW with 1.2V power supply. Measured integral nonlinearity and differential nonlinearity are 0.5LSB and 0.33LSB respectively.
Molecular dynamics with multiple time scales: The selection of efficient reference system propagators (1996)

Several heuristic rules are developed to assist in the implementation of the reversible reference system propagator algorithm (rRESPA). This is done through the use of examples, illustrating the use of properly chosen rRESPA splits of various types, as well as the dangers associated with improperly chosen ones. It is concluded that a particle-based rRESPA split should be used only when there is a great disparity in particle masses, and that a force-based split should be used only when there is no persisting opposition between forces in the system which are integrated with different time steps.
The use of Brazilian vegetable oils in nanoemulsions: an update on preparation and biological applications (2016)

Vegetable oils present important pharmacological properties, which gained ground in the pharmaceutical field. Its encapsulation in nanoemulsions is considered a promising strategy to facilitate the applicability of these natural compounds and to potentiate the actions. These formulations offer several advantages for topical and systemic delivery of cosmetic and pharmaceutical agents including controlled droplet size, protection of the vegetable oil to photo, thermal and volatilization instability and ability to dissolve and stabilize lipophilic drugs. For these reasons, the aim of this review is to report on some characteristics, preparation methods, applications and especially analyze recent research available in the literature concerning the use of vegetable oils with therapeutic characteristics as lipid core in nanoemulsions, specially from Brazilian flora, such as babassu (Orbignya oleifera), aroeira (Schinus molle L.), andiroba (Carapa guaianiensis), casca-de-anta (Drimys brasiliensis Miers), sucupira (Pterodon emarginatus Vogel) and carqueja doce (Stenachaenium megapotamicum) oils.
The ILLIAC IV FORTRAN compiler (1975)

This paper provides a basic description of a FORTRAN system for the ILLIAC IV. In this context “FORTRAN system” means exactly what one would expect — a user familiar with a different system will find no major surprises when he uses ILLIAC FORTRAN. The language is the same — a dialect of ANSI standard FORTRAN. The processors are the same — a compiler which generates relocatable binary files from FORTRAN source text, a link editor which collects and joins separately compiled program pieces into a single module, a loader which loads and relocates a single module into ILLIAC memory, a library of functions, and an I/O subsystem which supports formatted and unformatted FORTRAN I/O.
A Distributed Drafting Algorithm for Load Balancing (1985)

It is desirable for the load in a distributed system to be balanced evenly. A dynamic process migration protocol is needed in order to achieve load balancing in a user transparent manner. A distributed algorthim for load balancing which is network topology independent is proposed in this paper. Different network topologies and low-level communications protocols affect the choice of only some system design parameters. The "drafting" algorithm attempts to compromise two contradictory goals: maximize the processor utilization and minimize the communication overhead. The main objective of this paper is to describe the dynamic process migration protocol based on the proposed drafting algorithm. A sample distributed system is used to further illustrate the drafting algorithm and to show how to define system design parameters. The system performance is measured by simulation experiments based on the sample system.
Bispectral Methods of Signal Processing: Applications in Radar, Telecommunications and Digital Image Restoration (2014)

By studying applications in radar, telecommunications and digital image restoration, this monograph discusses signal processing techniques based on bispectral methods. Improved robustness against different forms of noise as well as preservation of phase information render this method a valuable alternative to common power-spectrum analysis used in radar object recognition, digital wireless communications, and jitter removal in images.
Analysis of beam-steering and directive characteristics of adaptive antenna arrays for mobile communications (2001)

Radiation patterns of planar, circular, and three-segment adaptive antenna arrays are analyzed and compared in view of applications in mobile radio. It is assumed that each array consisted of several subarrays, which themselves present vertical linear arrays (columns) of patch radiators, with prescribed magnitude and phase distributions that determine the beam shape in the vertical (elevation) direction. Weighting signals applied to the subarray inputs provide beam steering in the horizontal (azimuth) plane. The scan-angle range and directive properties of such arrays are analyzed and simulated. For relatively small and moderate-sized base-station adaptive arrays, consisting of N=4, ..., 7 subarrays, the planar configuration may not be an appropriate choice, as the planar array has limited scan-angle range. Steering its beam toward the edges of a 120/spl deg/ sector leads to a rise in the grating lobe in the opposite azimuth direction, which, in turn, entails an additional decrease in antenna gain. Circular and three-segment configurations are good and relatively simple alternative variants. These have some degree of curvature, which allows beam steering in a wider angular range when compared to the planar geometry, although at the expense of a wider beam and lower directivity. Their geometrical parameters should be carefully chosen, so as to provide the required scans at the least loss in directivity. The three-segment form is closely related to its planar counterpart and, in some applications, may be more preferable than the circular form. For larger arrays, consisting of N/spl ges/8 subarrays, the planar geometry can attain the required 120/spl deg/ scans, and has advantages in directivity and gain when compared to any curved configuration.
Streptomyces-derived quorum-sensing systems engineered for adjustable transgene expression in mammalian cells and mice (2003)

Prokaryotic transcriptional regulatory elements have been adopted for controlled expression of cloned genes in mammalian cells and animals, the cornerstone for gene-function correlations, drug discovery, biopharmaceutical manufacturing as well as advanced gene therapy and tissue engineering. Many prokaryotes have evolved specific molecular communication systems known as quorum-sensing to coordinate population-wide responses to physiological and/or physicochemical signals. A generic bacterial quorum-sensing system is based on a diffusible signal molecule that prevents binding of a repressor to corresponding operator sites thus resulting in derepression of a target regulon. In Streptomyces, a family of butyrolactones and their corresponding receptor proteins, serve as quorum-sensing systems that control morphological development and antibiotic biosynthesis. Fusion of the Streptomyces coelicolor quorum-sensing receptor (ScbR) to a eukaryotic transactivation domain (VP16) created a mammalian transactivator (SCA) which binds and adjusts transcription from chimeric promoters containing an SCA-specific operator module (P(SPA)). Expression of erythropoietin or the human secreted alkaline phosphatase (SEAP) by this quorum-sensor-regulated gene expression system (QuoRex) could be fine-tuned by non-toxic butyrolactones in a variety of mammalian cells including human primary and mouse embryonic stem cells. Following intraperitoneal implantation of microencapsulated Chinese hamster ovary cells transgenic for QuoRex-controlled SEAP expression into mice, the serum levels of this model glycoprotein could be adjusted to desired concentrations using different butyrolactone dosing regimes.
Streptococcus mutans dextransucrase: effect of cerulenin on lipid synthesis and enzyme production (1980)

The effect of the fatty acid synthesis inhibitor cerulenin on growth and dextransucrase (EC 2.4.1.5) production by Streptococcus mutans 6715 was analyzed. Growth was markedly inhibited by less than 1 microgram of the antibiotic per ml. Under conditions where cerulenin did not inhibit amino acid incorporation into protein but did block acetate metabolism into lipid, the production of extracellular dextransucrase was suppressed. Inhibition was not due to a direct effect of the antibiotic on the enzyme or the lack of release of enzyme from the bacterial cell surface. Gel column chromatography demonstrated that enzyme produced in the presence of cerulenin was highly aggregated, similar to the control enzyme. Although the addition of ysophosphatidylcholine to enzyme which had been synthesized in the presence of cerulenin stimulated glucan formation from sucrose, the increase was not greater than that produced with the control enzyme. The differential inhibition of dextransucrase production by cerulenin indicates that enzyme secretion requires the production of lipid and may reflect the mechanism by whch this enzyme is transported from the bacterial cell.