gebhart/patrepeval huggingface dataset:
A Comparative Analysis of Different Neural Networks for Face Recognition Using Principal Component Analysis and Efficient Variable Learning Rate (2010)

In this paper we propose a new approach to find the optimum learning rate that increases the recognition rate and reduces the training time of the back propagation neural network as well as single layer feed forward Neural Network. We give a comparative analysis of performance of back propagation neural network and single layer feed forward neural network. In our approach we use variable learning rate and demonstrate its superiority over constant learning rate. We use different inner epochs for different input patterns according to their difficulty of recognition. We also show the effect of optimum numbers of inner epochs, best variable learning rate and numbers of hidden neurons on training time and recognition accuracy. We run our algorithm for face recognition application using Principal Component Analysis and neural network and demonstrate the effect of number of hidden neurons and size of feature vector on training time and recognition accuracy for given numbers of input patterns. We use ORL database for all the experiments.
Signal Timing Estimation Using Sample Intersection Travel Times (2012)

Signal timing information is important in signal operations and signal/arterial performance measurement. Such information, however, may not be available for wide areas. This imposes difficulty, particularly for real-time signal/arterial performance measurement and traffic information provisions that have received much attention recently. We study, in this paper, the possibility of using intersection travel times, i.e., those collected between upstream and downstream locations of an intersection, to estimate signal timing parameters. The method contains three steps: 1) cycle breaking that determines whether a new cycle starts; 2) exact cycle boundary detection that determines when exactly a cycle starts or ends; and 3) effective red (or green) time estimation that estimates the actual duration of the red (or green) time. The proposed method is a combination of traffic flow theory and learning/estimation algorithms and can be used to estimate the cycle-by-cycle signal timing parameters for a specific movement of a signal. The method is tested using data from microscopic simulation, field experiments, and next-generation simulation with promising results.
Catalytic Enantioselective Epoxidation of Unfunctionalized Olefins: Utility of a Ti(O<i>i</i>-Pr)<sub>4</sub>-Salan-H<sub>2</sub>O<sub>2</sub> System (2006)

Salan ligands bearing an ortho-substituted phenyl group at C3 and C3′ were found to serve as an effective auxiliary of a Ti(Oi-Pr)4-salan-H2O2 system for enantioselective epoxidation. Simple olefins were converted into the corresponding epoxides in good to excellent enantioselectivity.
PDK2: the missing piece in the receptor tyrosine kinase signaling pathway puzzle (2005)

Activation of members of the protein kinase AGC (cAMP dependent, cGMP dependent, and protein kinase C) family is regulated primarily by phosphorylation at two sites: a conserved threonine residue in the activation loop and a serine/threonine residue in a hydrophobic motif (HM) near the COOH terminus. Although phosphorylation of these kinases in the activation loop has been found to be mediated by phosphoinositide-dependent protein kinase-1 (PDK1), the kinase(s) that catalyzes AGC kinase phosphorylation in the HM remains uncharacterized. So far, at least 10 kinases have been suggested to function as an HM kinase or the so-called "PDK2," including mitogen-activated protein (MAP) kinase-activated protein kinase-2 (MK2), integrin-linked kinase (ILK), p38 MAP kinase, protein kinase Calpha (PKCalpha), PKCbeta, the NIMA-related kinase-6 (NEK6), the mammalian target of rapamycin (mTOR), the double-stranded DNA-dependent protein kinase (DNK-PK), and the ataxia telangiectasia mutated (ATM) gene product. However, whether any or all of these kinases act as a physiological HM kinase remains to be established. Nonetheless, available data suggest that multiple systems may be used in cells to regulate the activation of the AGC family kinases. It is possible that, unlike activation loop phosphorylation, phosphorylation of the HM site in the different AGC family kinases is mediated by distinct kinases. In addition, phosphorylation of the AGC family kinase at the HM site could be cell type, signaling pathway, and substrate specific. Identification and characterization of the bonafide HM kinase(s) will be essential to verify these hypotheses.
Performance analysis of a large-scale multicast output buffered ATM switch (2002)

Chao and Choe (1993) proposed a recursive modular architecture for implementing a large-scale multicast output buffered ATM switch (MOBAS). Four major functions of designing a multicast switch: cell replication, cell routing, cell contention resolution, and cell addressing, are all performed distributedly in the MOBAS, which allows the switch to grow. The architecture of the MOBAS has a regular and uniform structure and, thus, has the advantages of: (1) easy expansion due to the modular structure, (2) high integration density for VLSI implementation, (3) relaxed synchronization for data and clock signals, and (4) building the center switch fabric with a single type of chip. Multicast knockout principle, an extension of generalized knockout principle, is applied to construct the entire switch fabric so as to reduce the hardware complexity (e.g., the number of switch elements and interconnection wires) by almost one order of magnitude. In the present paper, the authors analyze a two-stage MOBAS in its cell loss rate and present some numerical results. They show that a switch that is designed, based on the multicast knockout principle, to meet the performance requirement for unicast calls will also satisfy the performance requirement for multicast calls.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Microwave Sintering of Partially Stabilized Zirconia (1988)

Partially stabilized zirconia has been rapidly sintered in a microwave apparatus to good final densities (95% to 98% of theoretical density). The grain size was not noticeably different from that of conventionally sintered material. Properties of the sintered material are given.
The timing of tuberculosis after isoniazid preventive therapy among gold miners in South Africa: a prospective cohort study (2016)

The durability of protection by IPT was lost within 6-12 months in this setting with a high HIV prevalence and a high annual risk of M. tuberculosis infection. The observed rate was higher than the modelled rate, suggesting that reactivation of persistent latent infection played a role in the rapid return to baseline TB incidence.
A three terminal varactor for RF IC's in standard CMOS technology (2000)

A three terminal metal-oxide-silicon varactor operated between accumulation and deep depletion is proposed for RF IC's. Prototypes, realized in a 0.35 /spl mu/m standard CMOS technology, show a 3.1:1 capacitance tuning. The corresponding minimum Q is 23 at 1800 MHz. The proposed varactor lends itself as tuning element of VCO's in highly integrated CMOS transceivers.
Overlapping Community Detection Using Neighborhood-Inflated Seed Expansion (2016)

Community detection is an important task in network analysis. A community (also referred to as a cluster) is a set of cohesive vertices that have more connections inside the set than outside. In many social and information networks, these communities naturally overlap. For instance, in a social network, each vertex in a graph corresponds to an individual who usually participates in multiple communities. In this paper, we propose an efficient overlapping community detection algorithm using a seed expansion approach. The key idea of our algorithm is to find good seeds, and then greedily expand these seeds based on a community metric. Within this seed expansion method, we investigate the problem of how to determine good seed nodes in a graph. In particular, we develop new seeding strategies for a personalized PageRank clustering scheme that optimizes the conductance community score. An important step in our method is the neighborhood inflation step where seeds are modified to represent their entire vertex neighborhood. Experimental results show that our seed expansion algorithm outperforms other state-of-the-art overlapping community detection methods in terms of producing cohesive clusters and identifying ground-truth communities. We also show that our new seeding strategies are better than existing strategies, and are thus effective in finding good overlapping communities in real-world networks.
Some Special Inverse Problems for the Laplace Equation and the Helmholtz Equation (1985)

The paper deals with a special inverse source problem relative to the Laplace equation. An unknown mass distribution (measure) concentrated on a given domain is to be determined from the boundary values of its Newtonian potential or from the boundary values of its gradient. In Theorem 1 we prove that the second problem can be reduced to the first one. There exist infinitely many positive mass distributions satisfying the condition under consideration. Therefore an equivalence relation on the set of all positive mass distributions is introduced. In earlier papers the first author studied this equivalence relation from a systematic point of view. To uniquely determine the unknown mass distribution additional conditions are necessary. Here we study the case in which the density of a volume distribution is a harmonic function. Further, we prove that an identification problem for the Helmholtz equation can be transformed into the special inverse problem considered.
Content-Specific Fronto-Parietal Synchronization During Visual Working Memory (2012)

Lateral prefrontal and posterior parietal cortical areas exhibit task-dependent activation during working memory tasks in humans and monkeys. Neurons in these regions become synchronized during attention-demanding tasks, but the contribution of these interactions to working memory is largely unknown. Using simultaneous recordings of neural activity from multiple areas in both regions, we find widespread, task-dependent, and content-specific synchronization of activity across the fronto-parietal network during visual working memory. The patterns of synchronization are prevalent among stimulus-selective neurons and are governed by influences arising in parietal cortex. These results indicate that short-term memories are represented by large-scale patterns of synchronized activity across the fronto-parietal network.
Multiple <i>AGAMOUS</i> Homologs from Cucumber and Petunia Differ in Their Ability to Induce Reproductive Organ Fate (1998)

The C function in Arabidopsis, which specifies stamen and carpel identity, is represented by a single gene called AGAMOUS (AG). From both petunia and cucumber, two MADS box genes have been isolated. Both share a high degree of amino acid sequence identity with the Arabidopsis AG protein. Their roles in specifying stamen and carpel identity have been studied by ectopic expression in petunia, resulting in plants with different floral phenotypes. Cucumber MADS box gene 1 (CUM1) induced severe homeotic transformations of sepals into carpelloid structures and petals into stamens, which is similar to ectopic AG expression in Arabidopsis plants. Overexpression of the other cucumber AG homolog, CUM10, resulted in plants with partial transformations of the petals into antheroid structures, indicating that CUM10 is also able to promote floral organ identity. From the two petunia AG homologs pMADS3 and Floral Binding Protein gene 6 (FBP6), only pMADS3 was able to induce homeotic transformations of sepals and petals. Ectopic expression of both pMADS3 and FBP6, as occurrs in the petunia homeotic mutant blind, phenocopies the pMADS3 single overexpresser plants, indicating that there is no additive effect of concerted expression. This study demonstrates that in petunia and cucumber, multiple AG homologs exist, although they differ in their ability to induce reproductive organ fate.
Evaluation Of Rotordynamic Criteria For Multistage Pump Shafts (2008)

After three
UNIVERSITARIOS LLEVAN A TELEVISIÓN LA PUESTA EN ESCENA LA VIDA ES SUEÑO (1997)

TV UNAM GRABO PARA LA TELEVISION LA PUESTA EN ESCENA DE LA OBRA LA VIDA ES SUENO, DE PEDRO CALDERON DE LA BARCA, CON EL PROPOSITO DE CONSERVAR EL TRABAJO DE JOSE LUIS IBANEZ, FEDERICO IBARRA Y VICENTE ROJO. ESTE TRABAJO, TRANSMITIDO POR CANAL 22 EN DOS PARTES, TIENE UNA DURACION DE CASI TRES HORAS. ASI LO INFORMO LA PRODUCTORA ROSA MARTHA FERNANDEZ, Y AGREGO QUE LA OBRA FUE MONTADA POR UNIVERSITARIOS, DESDE LOS ACTORES HASTA EL DIRECTOR.
Scalability Comparison of Bioinformatics for Applications on AIX and Linux on IBM eServer pSeries 690 (2004)

The scalability performance of several critical bioinformatics applications, including BLAST, FASTA, Smith-Waterman, HMMER, ICED and Mascot, was evaluated on AIX® 5.1 and SUSE Linux Enterprise Server 8 for IBM® eServer pSeries®. These applications are either threaded or OpenMP-enabled parallel implementations. The comparison was conducted on the same LPAR of a p690 with 16 CPUs. The results suggested that the scalability of these applications on AIX and Linux are comparable, in general.
Inhibition of aryl acid adenylation domains involved in bacterial siderophore synthesis (2005)

Aryl acid adenylation domains are the initial enzymes for aryl-capping of catecholic siderophores in a plethora of microorganisms. In order to overcome the problem of iron acquisition in host organisms, siderophore biosynthesis is decisive for virulence development in numerous important human and animal pathogens. Recently, it was shown that growth of Mycobacterium tuberculosis and Yersinia pestis can be inhibited in an iron-dependent manner using the arylic acyl adenylate analogue 5'-O-[N-(salicyl)-sulfamoyl] adenosine that acts on the salicylate activating domains, MbtA and YbtE [Ferreras JA, Ryu JS, Di Lello F, Tan DS, Quadri LEN (2005) Nat Chem Biol1, 29-32]. The present study explores the behaviour of the 2,3-dihydroxybenzoate activating domain DhbE (bacillibactin synthesis) and compares it to that of YbtE (yersiniabactin synthesis) upon enzymatic inhibition using a set of newly synthesized aryl sulfamoyl adenosine derivatives. The obtained results underline the highly specific mode of inhibition for both aryl acid activating domains in accordance with their natively accepted aryl moiety. These findings are discussed regarding the structure-function based aspect of aryl substrate binding to the DhbE and YbtE active sites.
A Long‐Term Survey of Tooth Loss in 600 Treated Periodontal Patients (1978)

1. Six hundred patients in a private periodontal practice were reexamined an average of 22 years after their active treatment and the patterns of tooth loss were observed. 2. During the post-treatment period, 300 patients had lost no teeth from periodontal disease, 199 had lost one to three teeth, 76 had lost 4 to 9 teeth and 25 had lost 10 to 23 teeth. 3. Of 2,139 teeth that originally had been considered of questionable prognosis, 666 were lost. Of these, 394 were lost by one sixth of the patients and only 272 by the other five-sixths. 4. Of 1,464 teeth which originally had furcation involvements, 460 were lost, 240 of them by one-sixth of the patients who deteriorated most. 5. The mortality of teeth which were treated with periodontal surgery was compared with that of teeth which did not have surgery. Tooth retention seemed more closely related to the case type than the surgery performed. 6. In general, periodontal disease is bilaterally symmetrical and there is a predictable order of likelihood of tooth loss according to position in the arch.
Framework for developing extensible and reusable parallel and distributed applications (2002)

The number of parallel and distributed programming languages available is enormous. This means that the user faces a difficult task in selecting the language which suits his/her application. Most of the facilities supported by new languages could be, however, introduced as simple extensions of existing languages. In object oriented languages where the concepts of reusability and extensibility are natural parts of the language, extensions can easily take place by creating frameworks which provide the abstraction level required by the user. We present a framework that supports the dynamic reconfiguration of processes. C++CL is a framework developed in C++ and layered above PVM. This means that dynamic reconfigurable systems are easily built in a C++ fashion following the CL approach. At the same time, by using PVM, we improve the portability of the framework over heterogeneous networks and can also use all tools available for tracing and debugging PVM parallel processes. The paper then shows how the framework can be extended to provide special classes of programs.
Excretion of cysteine and gamma-glutamylcysteine moieties in human and experimental animal gamma-glutamyl transpeptidase deficiency. (1980)

Animals treated with potent gamma-glutamyl transpeptidase inhibitors and a patient with severe gamma-glutamyl transpeptidase deficiency excrete much larger than normal amounts of glutathione, gamma-glutamylcysteine, and cysteine in their urine; these compounds were found in disulfide forms. The findings indicate that the metabolic function of gamma-glutamyl transpeptidase is associated with the metabolism or transport (or both) of cysteine, gamma-glutamylcysteine, and glutathione, and that gamma-glutamylcysteine is a physiological substrate of the enzyme. The occurrence of gamma-glutamylcysteine in urine and other considerations suggest that this dipeptide is formed as an extracellular metabolite of glutathione in addition to its recognized role as an intrcellular precursor of glutathione. The dipeptide may be formed by a pathway involving transpeptidation or by cleavage of the Cys-Gly bond of glutathione. In the course of this work it was found that the mixed disulfide between glutathione and gamma-glutamylcysteine is a good substrate of glutathione reductase.
Illness Behavior Among Patients Attending a Sexually Transmitted Disease Clinic (1987)

A questionnaire on illness behavior was administered to a consecutive sample of 90 men and 47 women attending a public clinic for sexually transmitted diseases. Abnormal illness behavior (particularly general hypochondriasis, degree of psychologic perception of illness, and denial of stresses apart from the illness) increased with the number of previous infections. Those with no previous infections saw sexually transmitted disease as an illness significantly less often than those with previous infections. First attenders have a higher risk of noncompliance with treatment, and illness behavior may develop by association with repeated infections and the increasingly apparent connection between behavior and illness. These findings applied to homosexual as well as to heterosexual men, although responses to the questionnaire showed that homosexual men were significantly less hypochondriacal. It is concluded that there is greater evidence of psychologic maladjustment among this clinic population than among that attending general practices and that illness behavior is related to established risk factors such as more partners and previous infections.
Ward's Hierarchical Clustering Method: Clustering Criterion and Agglomerative Algorithm (2011)

The Ward error sum of squares hierarchical clustering method has been very widely used since its first description by Ward in a 1963 publication. It has also been generalized in various ways. However there are different interpretations in the literature and there are different implementations of the Ward agglomerative algorithm in commonly used software systems, including differing expressions of the agglomerative criterion. Our survey work and case studies will be useful for all those involved in developing software for data analysis using Ward's hierarchical clustering method.
Prenatal Diagnosis of Iniencephaly (2007)

Iniencephaly is characterized by a variable deficit of the occipital bones, resulting in an enlarged foramen magnum; partial or total absence of cervical and thoracic vertebrae with an irregular fusion of those present, accompanied by incomplete closure of the vertebral arches and/or bodies; significant shortening of the spinal column due to marked lordosis and hyperextension of the malformed cervicothoracic spine; and an upward-turned face and mandibular skin directly continuous with that of the chest due to the lack of neck. This article provides a comprehensive review of the reported cases of prenatally detected iniencephaly, including prenatal diagnosis, associated malformations, associated chromosomal abnormalities, and differential diagnosis. Prenatal diagnosis of a neural tube defect involving a body defect in the occiput and rachischisis of the cervical and thoracic spine with retroflexion of the head should raise the suspicion of iniencephaly. Iniencephaly may be associated with craniorachischisis and other structural anomalies. Prenatal diagnosis of non-isolated iniencephaly and craniorachischisis should alert one to the possibility of chromosomal abnormalities and prompt a cytogenetic investigation.
Carbohydrate malabsorption in patients with non-specific abdominal complaints (2007)

Non-specific abdominal complaints are a considerable problem worldwide. Many patients are affected and many differential diagnoses have to be considered. Among these, carbohydrate malabsorption seems to play an important role. However, so far, only incomplete absorption of lactose is broadly accepted, while the malabsorption of fructose and sorbitol is still underestimated, although in many parts of the world it is much more frequent. Despite the success of dietary interventions in many patients, there are still a lot of unanswered questions that make further investigations necessary.
Photopolymerization kinetics of ionic liquid monomers derived from the neutralization reaction between trialkylamines and acid‐containing (meth)acrylates (2007)

Abstract Polymerizable ionic liquids were synthesized from the neutralization reaction between trialkylamines (tributylamine, trihexylamine, trioctylamine, 2‐(dimethyl‐amino)ethyl acrylate, and 2‐(dimethylamino)ethyl methacrylate) and acid‐containing (meth)acrylates to study the kinetics of their photopolymerization. The ionic liquids formed from acrylic acid and methacrylic acid with trialkylamines showed low or moderate increases in rate compared to their monofunctional analogues. The ionic liquids formed from (meth)acrylic acid and a tertiary amine with a pendant acrylate exhibited rates typical of traditional di(meth)acrylates, although the (meth)acrylates were not covalently attached to the same molecule. All of the phosphate‐based ionic liquids exhibited very rapid polymerization rates and strong dependence on the initial viscosity. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 3009–3021, 2007
[True aneurysm of the deep femoral artery]. (2001)

Aneurysms of the profunda femoris artery are very rare. The frequency of these aneurysms is 0.5-1% of all peripheral atherosclerotic aneurysms. This condition can be symptom free for an extended period of time. In one third of the patients, palpable, pulsating swelling appears in the groin. Complications such as rupture, peripherial embolism, deep vein thrombosis, depending on the condition of the arteries ischaemia in the leg can develop. Treatment of this condition according to the literature is resection of the aneurysm with reconstruction of the artery. Our practice is the same. If diagnosis is achieved surgery is necessary to avoid further complications. The literature review from 1960 presents 51 patients with the disease, we added 3 of our own cases to this number.