gebhart/patrepeval huggingface dataset:
Multispectral Palmprint Recognition Using a Quaternion Matrix (2012)

Palmprints have been widely studied for biometric recognition for many years. Traditionally, a white light source is used for illumination. Recently, multispectral imaging has drawn attention because of its high recognition accuracy. Multispectral palmprint systems can provide more discriminant information under different illuminations in a short time, thus they can achieve better recognition accuracy. Previously, multispectral palmprint images were taken as a kind of multi-modal biometrics, and the fusion scheme on the image level or matching score level was used. However, some spectral information will be lost during image level or matching score level fusion. In this study, we propose a new method for multispectral images based on a quaternion model which could fully utilize the multispectral information. Firstly, multispectral palmprint images captured under red, green, blue and near-infrared (NIR) illuminations were represented by a quaternion matrix, then principal component analysis (PCA) and discrete wavelet transform (DWT) were applied respectively on the matrix to extract palmprint features. After that, Euclidean distance was used to measure the dissimilarity between different features. Finally, the sum of two distances and the nearest neighborhood classifier were employed for recognition decision. Experimental results showed that using the quaternion matrix can achieve a higher recognition rate. Given 3000 test samples from 500 palms, the recognition rate can be as high as 98.83%.
Secure data deletion for Linux file systems (2001)

Security conscious users of file systems require that deleted information and its associated meta-data are no longer accessible on the underlying physical disk. Existing file system implementations only reset the file system data structures to reflect the removal of data, leaving both the actual data and its associated meta-data on the physical disk. Even when this information has been overwritten, it may remain visible to advanced probing techniques such as magnetic force microscopy or magnetic force scanning tunneling microscopy. Our project addresses this problem by adding support to the Linux kernel for asynchronous secure deletion of file data and meta-data. We provide an implementation for the Ext2 file system; other file systems can be accommodated easily. An asynchronous overwriting process sacrifices immediate security but ultimately provides a far more usable and complete secure deletion facility. We justify our design by arguing that user-level secure deletion tools are inadequate in many respects and that synchronous deletion facilities are too time consuming to be acceptable to users. Further, we contend that encrypting file information, either using manual tools or a encrypted file system, is not a sufficient solution to alleviate the need for secure data deletion.
Balancing Exploration and Exploitation in Sampling-Based Motion Planning (2014)

We present the exploring/exploiting tree (EET) algorithm for motion planning. The EET planner deliberately trades probabilistic completeness for computational efficiency. This tradeoff enables the EET planner to outperform state-of-the-art sampling-based planners by up to three orders of magnitude. We show that these considerable speedups apply for a variety of challenging real-world motion planning problems. The performance improvements are achieved by leveraging work space information to continuously adjust the sampling behavior of the planner. When the available information captures the planning problem's inherent structure, the planner's sampler becomes increasingly exploitative. When the available information is less accurate, the planner automatically compensates by increasing local configuration space exploration. We show that active balancing of exploration and exploitation based on workspace information can be a key ingredient to enabling highly efficient motion planning in practical scenarios.
Action of Min and Mom1 on neoplasia in ectopic intestinal grafts. (1996)

Mice heterozygous for Min, a mutant allele of Apc, develop adenomas throughout the intestinal tract. Tumor multiplicity in Min mice is influenced by genetic modifier loci. Previously, we mapped one of these modifier loci, Mom1, to distal mouse chromosome 4. Mom1 is a semidominant modifier of both tumor size and multiplicity in Min mice. Recent evidence suggests that Mom1 may encode a secretory phospholipase, Pla2g2a. Pla2g2a is expressed in a variety of cell types and seems to be involved in inflammatory responses and bacterial defense mechanisms. Here, we determine whether Min and Mom1 act in a tissue-autonomous fashion using ectopic intestinal isografts. Within the small intestinal grafts, both Min and Mom1 act in a tissue-autonomous manner. There is no evidence that either Min or Mom1 has a systemic effect on tumor development. However, within the colonic grafts, the Min phenotype does not appear to be autonomous; the development of colonic tumors in Min mice seems dependent on factors beyond the Min genotype of the colonic epithelium. Micro-environmental factors, such as digestive secretions, dietary components, or intestinal flora, may be critical factors contributing to the development of Min-induced colonic tumors. However, these factors are not required for the action of Min or Mom1 within the small intestine.
Evidence for Elevated Glucose Threshold in Patients With Impaired Glucose Tolerance and Symptoms of Hypoglycemia During OGTT (1990)

We evaluated the relationship between hypoglycemic symptoms, glucose nadir levels, and hormone changes in patients with impaired glucose tolerance (IGT) after an oral glucose tolerance test (OGTT). The peak counterregulatory hormone response was determined at the glucose nadir identified by continuous glucose monitoring. Eight patients with IGT who had symptoms and signs typical of hypoglycemia at the glucose nadir were compared with completely asymptomatic subjects (5 IGT patients and 13 patients who had normal glucose tolerance [NGT]). The mean glucose nadir of symptomatic IGT patients was 3.50 ± 0.46 mM, which was not statistically different from the mean of asymptomatic NGT patients (4.10 ± 0.56 mM) but was significantly lower than that for asymptomatic IGT patients (5.10 ± 0.81 mM, P &lt; 0.001). Seven of 8 symptomatic IGT patients had glucose levels that never fell below the range of glucose nadirs for asymptomatic NGT patients. However, the symptomatic IGT group had significantly higher levels of growth hormone, cortisol, epinephrine, and norepinephrine than the asymptomatic groups in response to the nadir. We conclude that patients with IGT are capable of experiencing signs and symptoms of hypoglycemia at physiological glucose levels during OGTT with reflex stimulation of counterregulatory hormone release. This may indicate that symptomatic IGT patients have a higher glucose threshold for eliciting characteristic hypoglycemic symptom episodes than individuals with NGT.
Modulation of <sup>3</sup>H‐noradrenaline release by presynaptic opioid, cannabinoid and bradykinin receptors and β‐adrenoceptors in mouse tissues (2000)

Release-modulating opioid and cannabinoid (CB) receptors, beta-adrenoceptors and bradykinin receptors at noradrenergic axons were studied in mouse tissues (occipito-parietal cortex, heart atria, vas deferens and spleen) preincubated with (3)H-noradrenaline. Experiments using the OP(1) receptor-selective agonists DPDPE and DSLET, the OP(2)-selective agonists U50488H and U69593, the OP(3)-selective agonist DAMGO, the ORL(1) receptor-selective agonist nociceptin, and a number of selective antagonists showed that the noradrenergic axons innervating the occipito-parietal cortex possess release-inhibiting OP(3) and ORL(1) receptors, those innervating atria OP(1), ORL(1) and possibly OP(3) receptors, and those innervating the vas deferens all four opioid receptor types. Experiments using the non-selective CB agonists WIN 55,212-2 and CP 55,940 and the CB(1)-selective antagonist SR 141716A indicated that the noradrenergic axons of the vas deferens possess release-inhibiting CB(1) receptors. Presynaptic CB receptors were not found in the occipito-parietal cortex, in atria or in the spleen. Experiments using the non-selective beta-adrenoceptor agonist isoprenaline and the beta(2)-selective agonist salbutamol, as well as subtype-selective antagonists, demonstrated the occurrence of release-enhancing beta(2)-adrenoceptors at the sympathetic axons of atria and the spleen, but demonstrated their absence in the occipito-parietal cortex and the vas deferens. Experiments with bradykinin and the B(2)-selective antagonist Hoe 140 showed the operation of release-enhancing B(2) receptors at the sympathetic axons of atria, the vas deferens and the spleen, but showed their absence in the occipito-parietal cortex. The experiments document a number of new presynaptic receptor locations. They confirm and extend the existence of marked tissue and species differences in presynaptic receptors at noradrenergic neurons.
A dominant-negative isoform lacking exons 11 and 12 of the human hypoxia-inducible factor-1α gene (2002)

Hypoxia-inducible factor-1α (HIF-1α), a member of the transcription family characterized by a basic helix-loop-helix (bHLH) domain and a PAS domain, regulates the transcription of hypoxia-inducible genes involved in erythropoiesis, vascular remodelling and glucose/energy metabolism. It contains bHLH/PAS domains in the N-terminal half, and a nuclear localization signal (NLS) and two transactivation domains (TADs) in the C-terminal half. It also has an oxygen-dependent degradation (ODD) domain, which is required to degrade HIF-1α protein by the ubiquitin—proteasome pathway. In this study, we identified a new alternatively spliced variant of human HIF-1α mRNA, which lacked both exons 11 and 12, producing a frame shift and giving a shorter form of HIF-1α. In the corresponding protein, a part of the ODD domain, both TADs and the C-terminal NLS motif were missing. Expression of endogenous HIF-1α variant protein was identified using immunoprecipitation and immunoblotting methods. The expressed HIF-1α variant exhibited neither the activity of transactivation nor hypoxia-induced nuclear translocation. In contrast with HIF-1α, the variant was strikingly stable in normoxic conditions and not up-regulated to such an extent by hypoxia, cobalt ions or desferrioxamine. It was also demonstrated that the HIF-1α variant competed with endogenous HIF-1α and suppressed HIF-1 activity, resulting in the down-regulation of mRNA expression of hypoxia-inducible genes. The association of the variant and arylhydrocarbon receptor nuclear translocator in the cytoplasm may be related to the inhibition of HIF-1 activity. It is assumed that this isoform preserves the balance between aerobic and anaerobic metabolism by counteracting the overaction of HIF-1α.
MEMS/microfluidics packaging without heating (2010)

The sequentially plasma activated bonding (SPAB) of silicon/silicon interface has been characterized after annealing up to 900°C for packaging of micro- electro mechanical systems (MEMS) and microfluidic devices at low temperature. The bonding strength of the interface in the SPAB was as high as that of the conventional hydrophilic bonding method, which requires annealing as high as 1000°C to achieve covalent bonding. The interfacial voids evolution with annealing temperatures has been correlated with the bonding strength. Although the rearrangement of water such as absorption and desorption across the bonded interface was found below 225°C, the voids were not significant up to 400°C. Annealing above 600°C resulted in a considerable amount of thermal voids due to viscous flow of oxides. The thermal voids were grown preferentially at the plasma induced defect sites. The contact angle and roughness of the sequentially plasma (reactive ion etching plasma followed by microwave radicals) treated surfaces have been observed to explain the void formation and reduction of the bonding strength of the interface. The plasma induced defect sites such as nanopores and craters have been indentified using an atomic force microscope. The electron energy loss spectroscopy showed oxygen deficiency in the nanometer thick interfacial amorphous silicon oxide.
The Revitalization of Northeast China Economy Must Start with Institutional Innovations (2009)

Starting with the basic knowledge of the system, the researcher analyzes the significance of institutional innovation in revitalizing old industrial bases in Northeast of China. It is not difficult to discover that Northeast's backwardness is caused by both of the historical and the artificial reasons. What's more, owing to the establishment of market economy, the old system no longer satisfies the development of the new system. Therefore, in order to speed up the Northeast region's economy and make it truly become the fourth growth pole, we must accelerate the innovation system.
A 900 MHz CMOS RF Direct Conversion Receiver Front-end with 3-dB NF and 30-KHz 1/f Noise Corner (2005)

A low-power, low 1/f noise RF receiver front-end for 900 MHz IEEE 802.15.4 ZigBee standard in 0.18 mum CMOS technology is implemented. In combination with LNA, a passive mixer showing excellent 1/f noise is adopted. The measured results show the conversion gain of 30 dB, NF of 3 dB with 1/f noise corner frequency of 30 KHz. Two-tone test measurements indicate -5 dBm IIP3, +45 dBm IIP2. The RF receiver front-end dissipates 2 mA from 1.8 V supply
Rational design, synthesis and 2D-QSAR studies of antiproliferative tropane-based compounds (2016)

Novel tropane-based compounds were synthesized exhibiting antiproliferative properties against HepG2 and MCF7 carcinoma cell lines.
Vibronic spectra of impurity-related optical centers in diamond (2000)

Electron-vibrational spectra of impurity-related optical centers of diamond are analyzed in terms of interaction with quasilocal and local vibrations connected with impurity atoms as well as with the short-wavelength lattice phonons. It is shown that the theoretical expressions for the energy and resonance width of quasilocal vibrations in crystals caused by heavy isotopic impurity atoms [Brout and Visscher, Phys. Rev. Lett. 9, 54 (1962)] can be satisfactorily applied for description of the acousticlike quasilocal vibrations in the diamond lattice caused by chemically different impurities. The model of quasilocal vibrations can also be successively applied for impurities (e.g., nitrogen) with masses comparable with the mass of the host carbon atom, provided these impurities form rigid clusters with host atoms vibrating as heavy units. The model is used for analysis of the optical centers in diamond containing Ti, Cr, Zn, Ag, Tl, W, Ni, Co, Ta, Si, and N impurities. Based on the results of this analysis, atomic models of the 3.188 eV N-related, 1.249 eV Ti-related, and 2.56 eV Ni-related centers are proposed.
Optically Excited Self-resonant Strain Transducers (2005)

SUMMARY Optically excited self-resonant microbeams form the basis for a new class of versatile, high-performance, lowcost fiber-optic sensors that uniquely combine silicon microfabrication technology with optoelectronic technology. The vibrating microbeam in its polysilicon vacuum enclosure is an effective optomechanical modulator driven by a built-in photodiode. Self-resonance with high modulation indices for reflected light has been demonstrated on devices having properly chosen microbeam and gap thicknesses. The microbeams are sensitive strain transducers with high gage factors, low temperature sensitivity, and wide dynamic range. They are the first optically powered active devices to achieve gain by interchanging optical, electrical, and mechanical energy in a merged structure.
Implementation of a virtual classroom for an introductory circuit analysis course (2002)

We are implementing several innovative uses of computers and computer networks in order to develop a new pedagogy in the teaching of university engineering courses. These uses of computers are creating efficiencies in the learning process, and students have found this new learning environment to be a significant improvement upon a traditional engineering course. This new educational paradigm should empower off-campus students to participate fully in the educational experience.
A mission management system architecture for cooperating air vehicles (2002)

A mission management system comprises the processes that perform tactical decision making tasks for an unmanned vehicle system. As such, it is the primary determinant of the range of realizable behaviors, versatility and ultimately the operational effectiveness of any class of Unmanned Air Vehicles (UAVs). The Mission Management System (MMS) project is an on-going program to develop a unified system architecture to provide ground-based and in-flight mission management for a reconfigurable class of cooperating UAVs. This distributed architecture enables integrated automated and manual planning to be applied to a hierarchy of operational levels, from the entire theater to individual vehicles. This paper presents an overview of the MMS motivations, requirements, and architectural design. A local MMS node, present at every cooperating site, manager the local platform resources and provides reaction capabilities m well as intelligent planning for "optimal" responses. Each node is an independent agent in the cooperation and negotiation process, using an interaction model analogous to a team of cooperating humane. The MMS design approach combines object-oriented analysis and design with rapid application development. Each node is layered defining "virtual machines" which provide standardized interfaces to promote reuse, flexibility, sad simplified development and maintenance. The architecture has been used to demonstrate both a ground-based planning prototype for unmanned missiles and a simulation of several cooperating UAVs.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Efficient Installation of β-Mannosides Using a Dehydrative Coupling Strategy (2005)

[reaction: see text]. A new coupling procedure for the construction of the challenging beta-mannosidic bond is described. Dehydrative mannosylation using 4,6-O-benzylidene mannopyranoses allows for the formation of beta-mannosides in excellent yield. The stereoselectivity is generally good but influenced by the exact nature of the glycosylating agent and the nucleophile.
Distinct and separate roles for herpesvirus-conserved UL97 kinase in cytomegalovirus DNA synthesis and encapsidation (2001)

The human cytomegalovirus UL97 kinase, an important target of antiviral therapy, has an impact on at least two distinct phases of viral replication. Compared with wild-type virus, the UL97 deletion mutant exhibits an early replication defect that reduces DNA accumulation by 4- to 6-fold, as well as a late capsid maturation defect responsible for most of the observed 100- to 1000-fold reduction in replication. Block-release experiments with the antiviral 2-bromo-5,6-dichloro-1-(beta-D-ribofuranosyl)-benzimidazole revealed an important role for UL97 kinase in capsid assembly. Although cleavage of concatemeric DNA intermediates to unit-length genomes remained unaffected, progeny mutant virus maturation was delayed, with accumulation of progeny at significantly reduced levels compared with wild type after release of this block. Transmission electron microscopy confirmed the aberrant accumulation of empty A-like capsids containing neither viral DNA nor an internal scaffold structure, consistent with a failure to stably package DNA in mutant virus-infected cells. The function of UL97 in DNA synthesis as well as capsid assembly suggests that protein phosphorylation mediated by this herpesvirus-conserved kinase increases the efficiency of these two distinct phases of virus replication.
Sidewall profile control through processing and dye additives (1990)

This paper studies e effects of process conditions and dye additives on sidewall profiles using RS—1 designed experiments. We have explored the mechanism of forming negative sidewall profiles (above 90) in a positive photoresist, the dependence of depth of focus (DOF) and exposure latitude upon sidewall angle The resist studied is a positive, dual purpose (g—, i—line) resist, ULTRAMAC EL2015. The study presented in this paper was done in i—line but similar phenomena were observed in g—line as well. The effect of two different actirtic dyes in various concentrations on wall angle control is demonstrated. The two dyes investigated are both soluble in resist solvent but their solubility in developer is very different and their effect on required exposure energy is different. The contribution of the dyes to the absorption of the resist, their effect on swing curve and surface inhibition is evaluated and compared. The surface inhibition effect of undyed resist has been determined to be the most critical parameter influencing profiles, as increased post exposure bake temperature increases sidewall profile angle.
SURFACE MODIFICATION FOR DURABLE TISSUE-ENGINEERED HEART VALVES (2002)

Purpose: Artificial valves have disadvantages that they cannot grow, repair and remodel. Tissue engineered heart valves are expected to overcome these shortcomings. The durability of tissue-engineered heart valves is now questionable. The purpose of the study is to evaluate of the durability of tissue engineered heart valve with surface modified scaffolds. Method: The scaffold was constructed with poly(D, L lactid-co-glycol-ide) (PGLA). To enhance cell attachment and in-growth, surface properties were modified by immobilization (if fibronectin and adhesion peptide sequence (RGD). For effective surface modification, the scaffolds were CO2 gas plasma treated prior to the immobilization process. The mock circulation system using a pulsatile pump was used for durability test under various shear stresses physiological condition. The cell-polymer construct was evaluated with MTT assays. In addition, scanning electron microscopy (SEMI study of the seeded scaffolds was also performed to document tissue development. Result: MTI assay and SEM evaluation revealed that in surface modified scaffolds, cell attachment was enhanced and cells were well ingrown to he tissue like structure. consequently the result of durability tests showed that the cells on the tissue engineered heart valve scaffolds with modified surface endured the diverse physiological shear stress Acknowledgement: This work was supported by the BK 21 project.
IX.—NEW BOOKS (1957)

IX.—NEW BOOKS Get access Hopi Ethics: A Theoretical Analysis. By R. B. BRANDT. Chicago University Press and Cambridge University Press. Pp. x + 398. £2 16s. 6d. DOROTHY EMMET DOROTHY EMMET Search for other works by this author on: Oxford Academic Google Scholar Mind, Volume LXVI, Issue 264, October 1957, Pages 562–564, https://doi.org/10.1093/mind/LXVI.264.562 Published: 01 October 1957
Photoconductive OPS-polyimides and their applications for opto-electronic devices. (II). Spatial light modulators. (1992)

oration proeessings and the image projection. In these high sensitivity, high resolution, fast response and good SLMs