gebhart/patrepeval huggingface dataset:
Human and machine recognition of faces: a survey (1995)

The goal of this paper is to present a critical survey of existing literature on human and machine recognition of faces. Machine recognition of faces has several applications, ranging from static matching of controlled photographs as in mug shots matching and credit card verification to surveillance video images. Such applications have different constraints in terms of complexity of processing requirements and thus present a wide range of different technical challenges. Over the last 20 years researchers in psychophysics, neural sciences and engineering, image processing analysis and computer vision have investigated a number of issues related to face recognition by humans and machines. Ongoing research activities have been given a renewed emphasis over the last five years. Existing techniques and systems have been tested on different sets of images of varying complexities. But very little synergism exists between studies in psychophysics and the engineering literature. Most importantly, there exists no evaluation or benchmarking studies using large databases with the image quality that arises in commercial and law enforcement applications In this paper, we first present different applications of face recognition in commercial and law enforcement sectors. This is followed by a brief overview of the literature on face recognition in the psychophysics community. We then present a detailed overview of move than 20 years of research done in the engineering community. Techniques for segmentation/location of the face, feature extraction and recognition are reviewed. Global transform and feature based methods using statistical, structural and neural classifiers are summarized.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Modelos, métodos y manías en el campo de ASL y ELE (2013)

Conferència a càrrec del Sr. Robert Blake, de la Universitat de Califòrnia, sobre models, mètodes i manies en l'adquisició d'una segona llengua (ASL) i en l'aplicació de l'ensenyament d' ELE, en el marc de les xerrades del SERELI i del Màster en ensenyament d'espanyol i de català com a L2
Temporary spin-on glass bonding technologies for via-last/backside-via 3D integration using multichip self-assembly (2014)

In this study, we proposed and demonstrated self-assembly-based via-last/backside-via 3D integration using a temporary spin-on glass (SOG) bonding technology. A hydrogenated amorphous silicon (a-Si:H) was employed as a debonding layer. Known good dies (KGDs) were precisely self-assembled right side up on an electrostatic carrier wafer by surface tension of water, and then, the KGDs were fixed by applying DC voltage to the carrier. After that, the KGDs were temporarily bonded and transferred to another support glass wafer on which the a-Si:H and SOG layers were deposited. After multichip thinning, Cu-TSVs were formed on the KGDs. The resulting TSV daisy chains showed good electrical characteristics. The KGDs can be debonded with a 308-nm laser and transferred again to target interposer wafers.
Platinum nickel catalyst alloy (2023)

A Pt--Ni catalyst is provided which demonstrates an unusually high oxygen reduction mass activity. In some embodiments, the Pt--Ni catalyst is a Pt--Ni binary alloy. In some embodiments, the catalyst may be characterized as having a Pt fcc lattice parameter of less than 3.71 Angstroms or 0.371 nm. In some embodiments the catalyst has a Pt fcc lattice parameter of between 3.69 Angstroms (or 0.369 nm) and 3.73 Angstroms (or 0.373 nm). In some embodiments, the catalyst may be characterized as having a composition of close to Pt.sub.xNi.sub.(1-x), where x is between 0.2 and 0.4. In some embodiments the catalyst comprises nanostructured elements comprising microstructured support whiskers bearing a thin film of nanoscopic catalyst particles comprising a catalyst material described above. The catalyst may be particularly useful as a fuel cell catalyst and more specifically as a fuel cell cathode catalyst.
Potential biomarkers of <scp>DNA</scp> quality in cryopreserved fish sperm: impact on gene expression and embryonic development (2018)

Abstract Sperm DNA quality and gene expression are crucial for early embryo development. Abnormal genomic processes can cause irreversible damage to totipotent cells, thereby altering the capacity for cell differentiation. Cryopreservation is a complex procedure that exposes cells to extreme conditions; it is therefore important to determine whether cryopreservation affects genomic stability. Despite this, few studies have focused on the effects of cryopreservation on the genomic stability of fish sperm. Thus, information is lacking to determine how the cryopreservation of fish sperm affects embryo quality and subsequently aquaculture. The aim of this review was to compile background information pertaining to the study of genomic stability in cryopreserved sperm. In this way, we hope to characterize more clearly the embryonic development of fish that are of biological and economic interest. We also discuss the potential use of antioxidants in cryopreservation to help preserve DNA integrity, gene expression and embryo quality. There is a current need to evaluate the use of potential biomarkers of genomic integrity to establish the effects of cryopreservation on the DNA quality of fish gametes and embryos.
High efficiency multijunction devices: solar cells, thermophotovoltaic cells, and LEDs (Conference Presentation) (2023)

High efficiency III-V multijunction solar cells require multiple alloys with optimal bandgaps and excellent material quality. However, many useful alloys are lattice-mismatched to available substrates, and require strain-engineering tricks to enable efficient use. To this extent, we have developed low-dislocation density metamorphic material and optically-thick stress-balanced superlattices, enabling access to a wide variety of III-V alloys. Combined with transparent tunnel junctions, these components allow optimizing multijunction devices for a variety of applications. We have designed multijunction cells for the G173G-terrestrial and AM0-space spectra with record 39.5% and 34.2% efficiency, respectively, and also thermophotovoltaic cells for blackbody spectra that reach over 40% TPV-efficiency. Finally, using these PV components, we demonstrate a multijunction LED with high quantum efficiency.
Sensorless current control for active rectifiers (2002)

A novel model-based sensorless input current controller for three phase active rectifiers is presented. The proposed algorithm is based upon a load conductance rectifier controller, which was previously implemented using current sensors. The paper presents analytical studies, simulation results and discusses a simple implementation using a low-cost integrated microcontroller. Experimental verification utilizes a 50 kVA active input/output IGBT converter. Simulation and experimental results for the proposed controller are compared to that of the sensor based version to validate the efficacy of this novel algorithm.
Ultra-High Efficiency / Low Hydrogen Embrittlement Nanostructured Zn-Based Electrodeposits as Environmentally Benign Cd-Replacement Coatings for High Strength Steel Fasteners (2011)

Abstract : The objective of SERDP project WP-1616 was to develop, and investigate the benefit of, nanostructured Zn-based alloys over current (Cd) and emerging (LHE ZnNi) sacrificial protective coatings, focusing in particular on the relevant properties for high strength steel fasteners. In Phase I, a number of nanostructured zinc (Zn)-based alloy coatings were successfully synthesized (Zn-Co, Zn-Fe, Zn-Ni and Zn-Ni-Co, in particular) based on simple modifications to currently available (off-the-shelf) commercial bath chemistries. The various nanostructured Zn-alloys were then subjected to comprehensive characterization and performance tests, including: grain size, crystallographic texture, microhardness, ductility, torque/tension friction, salt-spray corrosion and hydrogen embrittlement performance. Based on the Phase I results, the alkaline Zn-Ni, acid Zn-Ni and acid Zn-Ni-Co plating systems where selected as the most promising alloys to carry forward for further optimization in Phase II. The results in this report show that Integran's waveform engineering approach provides additional benefit over conventional DC plating and can be successfully integrated into a commercial scale as a potential swap-out technology with current Cadmium-plating.
Introduction to the Feature Issue on Slow Light and Its Applications (2008)

The fourteen articles in this special issue are devoted to the topic of slow light and its applications.
Curcumin Delivery Mediated by Bio-Based Nanoparticles: A Review (2020)

Todays, nano-pharmaceutics is emerging as an important field of science to develop and improve efficacy of different drugs. Although nutraceuticals are currently being utilized in the prevention and treatment of various chronic diseases such as cancers, a number of them have displayed issues associated with their solubility, bioavailability, and bio-degradability. In the present review, we focus on curcumin, an important and widely used polyphenol, with diverse pharmacological activities such as anti-inflammatory, anti-carcinogenic, anti-viral, etc. Notwithstanding, it also exhibits poor solubility and bioavailability that may compromise its clinical application to a great extent. Therefore, the manipulation and encapsulation of curcumin into a nanocarrier formulation can overcome these major drawbacks and potentially may lead to a far superior therapeutic efficacy. Among different types of nanocarriers, biological and biopolymer carriers have attracted a significant attention due to their pleiotropic features. Thus, in the present review, the potential protective and therapeutic applications of curcumin, as well as different types of bio-nanocarriers, which can be used to deliver curcumin effectively to the different target sites will be discussed.
Memory Fault Simulator for Static-Linked Faults (2006)

Static linked faults are considered an interesting class of memory faults. Their capability of influencing the behavior of other faults causes the hiding of the fault effect and makes test algorithm design and validation a very complex task. This paper presents a memory fault simulator architecture targeting the full set of linked faults
Identification of translational targets of tumor suppressor Pdcd4 through analysis of polysomal mRNA recruitment (2007)

A95 Programmed Cell Death 4 (Pdcd4) encodes a novel tumor suppressor that inhibits tumorigenesis in mouse models and invasion in human cancer cells. Pdcd4 exerts its effects by inhibiting protein translation initiation. Eukaryotic translational initiation depends on the formation of an active initiation complex (eIF4F), which includes the scaffold protein, eIF4G and the RNA helicase, eIF4A. The eIF4A helicase activity is essential for the efficient translation of specific mRNAs having structured 5’untranslated regions. Pdcd4 interacts with eIF4A, prevents association of eIF4A with eIF4G (eIF4F), and thereby inhibits eIF4A helicase activity and protein synthesis. Pdcd4 expression is often decreased in progressed carcinomas of human lung, breast, colon, and prostate. We hypothesize that Pdcd4 inhibits tumor promotion by regulating the translation of specific mRNA transcripts that are necessary for tumorigenesis. We anticipate that proteins encoded by Pdcd4-regulated mRNAs will be attractive molecular targets for cancer prevention and therapy. In order to identify mRNA targets of Pdcd4, we performed sucrose gradient fractionation of whole cell extracts from human breast cancer (T47D) cells attenuated for Pdcd4 function using siRNA and shRNA to Pdcd4. Decreased Pdcd4 activity is expected to result in increased translation of a subset of cellular mRNAs. We performed comparative microarray analysis of mRNA isolated from light fractions containing monosomes (i.e., mRNAs associated with 1-2 ribosomes) and heavy fractions containing polysomes (i.e., mRNAs associated with multiple ribosomes). We have identified several Pdcd4 target mRNAs that preferentially (>2-fold, p
Chemiluminescence detection of <i>Escherichia coli</i> in fresh produce obtained from different sources (2004)

A chemiluminescence-based assay is developed for the rapid detection of Escherichia coli in fresh produce. The assay was based on the reaction of beta-galactosidase enzyme from E. coli with a phenylgalactosidase-substituted dioxetane substrate. Light emitted from the reaction was measured in a luminometer and data correlated with counts of E. coli enumerated on sorbitol-MacConkey agar plates. A strain of E. coli O157:H7 was used to inoculate samples of fresh produce to differentiate the inoculum from the natural E. coli potentially present on the produce. Fresh market samples were tested for generic E. coli and E. coli O157:H7. Significant differences in light emission were found in samples with high initial E. coli counts when market samples were compared to respective heat-treated samples. The assay was able to detect E. coli in all produce tested, particularly at higher contamination or inoculation levels. The sensitivity of the assay ranged between 10(2)-10(5) CFU within 30 min. The chemiluminescence assay provides a simple and rapid method for detection of viable E. coli, an important step towards enhancing food safety.
Supplementary Figures 1-8 from TGFβ Promotes Genomic Instability after Loss of RUNX3 (2023)

&lt;p&gt;This file contains Supplementary Figures 1-8. Fig.S1 shows Characterization of TGF-β-dependent EMT. Fig.S2 shows an analysis of endogenous DNA damage accumulation in the presence of TGF-β. Fig.S3 shows the Upregulation of NOX4 and downregulation of NRF-dependent genes upon TGF-β exposure.Fig.S4 displays that RNA-sequencing analysis unveils spontaneous EMT upon RUNX3 knockdown. Fig.S5 shows the regulation of HMOX1 expression by RUNX3. Figure.S6 shows how BACH1-KD in RUNX3-depleted cells rescues the accumulation of DNA damage. Fig.S7 displays RUNX1 depletion results in DNA damage accumulation and senescence in the presence of TGF-β. Fig.S8 shows HMOX1 depletion results in heightened ROS production and senescence in the presence of TGF-β.&lt;/p&gt;
Protein kinase C-dependent growth hormone releasing peptides stimulate cyclic adenosine 3',5'-monophosphate production by human pituitary somatotropinomas expressing gsp oncogenes: evidence for crosstalk between transduction pathways. (1996)

The effects of the synthetic GH-releasing peptides, GHRP-2 and GHRP-6, on phosphatidylinositol (PI) hydrolysis and cAMP production have been examined in human pituitary somatotropinomas with and without adenylyl cyclase-activating gsp oncogenes. Both peptides dose-dependently stimulated the rate of PI hydrolysis and GH secretion by cell cultures of both types of somatotropinoma. GHRP-2 was considerably more potent than GHRP-6. The effects on GH secretion were reduced or abolished by phloretin, an inhibitor of protein kinase C, and W7, an inhibitor of calmodulin. However, antagonism of the GHRH-receptor and of protein kinase A with (N-Ac-Tyr1,D-Arg2)GRF-(1-29)-NH2 and Rp-adenosine-3',5'-cyclic monophosphothioate, respectively, did not alter the stimulatory effects of GHRP-2 and GHRP-6 on GH secretion. The effect of GHRP-2 and/or GHRP-6 on cAMP production was studied in 15 tumors, seven of which possessed constitutive adenylyl cyclase activity as evidenced by presence of gsp oncogenes. Both peptides stimulated cAMP production in the latter but not former types of tumor. Moreover, GHRP-2 and GHRP-6 potentiated the stimulation of cAMP production induced by GHRH and pituitary adenylate cyclase-activating polypeptide in tumors without gsp oncogenes. These results demonstrate that GHRP-2 and GHRP-6 exert identical effects on human pituitary somatotropinomas, except for differences in potency. Additionally, under conditions of adenylyl cyclase activity above basal levels (i.e. through stimulation of G2-protein coupled receptors or because of gsp oncogene expression), cAMP production can be increased even further by GHRP, providing evidence for cross-talk between the PI and adenylyl cyclase transduction systems in pituitary cells.
Synthesis, Inhibition, and Acid-Catalyzed Hydrolysis Studies of Model Compounds of the Proposed Intermediate in the Kdo8P-Synthase-Catalyzed Reaction (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Inhibition, and Acid-Catalyzed Hydrolysis Studies of Model Compounds of the Proposed Intermediate in the Kdo8P-Synthase-Catalyzed ReactionTimor Baasov and Amnon KohenCite this: J. Am. Chem. Soc. 1995, 117, 23, 6165–6174Publication Date (Print):June 1, 1995Publication History Published online1 May 2002Published inissue 1 June 1995https://pubs.acs.org/doi/10.1021/ja00128a002https://doi.org/10.1021/ja00128a002research-articleACS PublicationsRequest reuse permissionsArticle Views150Altmetric-Citations34LEARN 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
&lt;title&gt;Digital imaging microscopy: the marriage of spectroscopy and the solid state CCD camera&lt;/title&gt; (1991)

Biological samples have been imaged using microscopes equipped with slow-scan CCD cameras. Examples are presented of studies based on the detection of light emission signals in the form of fluorescence and phosphorescence. They include applications in the field of cell biology: (a) replication and topology of mammalian cell nuclei; (b) cytogenetic analysis of human metaphase chromosomes; and (c) time-resolved measurements of DNA-binding dyes in cells and on isolated chromosomes, as well as of mammalian cell surface antigens, using the phosphorescence of acridine orange and fluorescence resonance energy transfer of labeled lectins, respectively.
Time domain model beamforming for a near vertical acoustic array (1991)

Ocean acoustic tomography permits the mapping of various properties of a body of water through indirect means. The technique utilizes travel time variations for an acoustic signal to determine the structure of the ocean medium via inverse mathematical methods. The scale of any tomography experiment is fundamentally limited by the signal to noise ratio at the receiver. Through the use of a near vertical acoustic array, normal mode modeling of the local environment and a modal beamformer, array gains are possible which greatly extend the maximum separation between source and receiver. Additionally, the technique provides temporal resolution of the modal components of the arriving signal. A time domain modal beamformer for a near vertical acoustic array has been developed. It has realized a nominal array gain of 6 dB for the Heard Island Experiment vertical array deployed off California. The primary obstacle to the technique remains inadequate array geometry description.
Experimental Research on Hydrodynamic Amplifier of Drilling Pressure (2011)

In drilling engineering practice,sometimes it is necessary to increase drilling pressure for solving the problems of drilling in complicated conditions and treating accidents.One selected drilling machine only gives a constant feed pressure,but the specialists of Ukrainian National Ming University have developed a new hydrodynamic amplifier of drilling pressure based on the principles of hydrodynamics,which can solve the drilling difficulties in complicated conditions.The paper introduced the working principle of hydrodynamic amplifier(ГУОН)and the technical performance index,the comparison was made between the testing results and theoretical calculation.
Capacity Limits of Multiple Antenna Multicasting Using Antenna Subset Selection (2008)

Both military and commercial wireless cellular networks often require the same data to be conveyed to multiple users simultaneously. This technique is usually referred to as physical layer multicasting. Unfortunately, the capacity of this multicasting setup is dictated by the smallest maximum achievable rate among all the users. In this paper, we consider the use of antenna subset selection in multicast channels where the transmitter is equipped with multiple antennas and sends a common message to multiple users. In this set-up, the antenna subset selection scheme selects some subset of the basestation transmit antennas to maximize the minimum signal-to-noise ratio (SNR) among the associated users. Using an asymptotic analysis, the average capacity of the antenna subset selection scheme is compared with that provided by max-min transmit beamforming, which requires channel state information at the transmitter to maximize the minimum user SNR, and an open-loop scheme where independent data is transmitted on each antenna. Then, we identify the minimum required antenna configuration condition for multicasting in which the antenna subset selection scheme universally performs better than the open-loop scheme and outperforms max-min transmit beamforming when the number of users is large. In addition, for a fixed number of radio frequency chains and users, it is shown that the antenna subset selection scheme can exploit the antenna selection diversity and its average capacity grows double logarithmically with the number of transmit antennas without bound.
Appendix E: Orthogonalizing Adaptive Algorithms: RLS, DFT/LMS, and DCT/LMS (2007)

This chapter contains sections titled: The Recursive Least Squares Algorithm (RLS) The DFT/LMS and DCT/LMS Algorithms Bibliography
DE-Net: Dilated Encoder Network for Automated Tongue Segmentation (2021)

Automated tongue recognition is a growing research field due to global demand for personal health care. Using mobile devices to take tongue pictures is convenient and of low cost for tongue recognition. It is particularly suitable for self-health evaluation of the public. However, images taken by mobile devices are easily affected by various imaging environment, which makes fine segmentation a more challenging task compared with those taken by specialized acquisition devices. Deep learning approaches are promising for tongue image segmentation because they have powerful feature learning and representation capability. However, the successive pooling operations in these methods lead to loss of information on image details, making them fail when segmenting low-quality images captured by mobile devices. To address this issue, we propose a dilated encoder network (DE-Net) to capture more high-level features and get high-resolution output for automated tongue image segmentation. In addition, we construct two tongue image datasets which contain images taken by specialized devices and mobile devices, respectively, to verify the effectiveness of the proposed method. Experimental results on both datasets demonstrate that the proposed method outperforms the state-of-the-art methods in tongue image segmentation.