gebhart/patrepeval huggingface dataset:
A QoS provisioning MAC protocol for Cognitive Radio Network (2013)

Recently cognitive radio has been envisioned to solve the problem of spectrum scarcity and spectrum under-utilization. A cognitive radio performs communication by selecting a channel on an opportunistic basis. Thus the implementation of a cognitive radio for real-time application faces the challenge of sharing of a constantly varying sporadically available channel among multiple users. To this end we propose an energy efficient medium access control scheme for single-hop cognitive radio network (QCR-MAC) which provides four levels of QoS support with complexity equivalent to that of a single transceiver node. The scheme imparts QoS through the usage of different interframe spaces, which allows different priorities of winning a contention by packets from different applications. Two different channel access etiquettes are used according to the type of channel and data traffic. One spectrum etiquette favours stream based real-time data transfer while another favours bursty traffic. The protocol utilizes a beacon based structure for information interchange and thus allows contentions to be distributed on different channels whilst mitigating the control channel saturation problem. Simulation results shows the effectiveness of the proposed scheme over an existing similar work.
Preparation and properties of PMP YBCO bulk with submicrometre Y2BaCuO5particles (2000)

The microstructure, critical current density and relaxation behaviour of a YBCO sample fabricated by the powder melting process technique have been studied by using a transmission electron microscopy and SQUID magnetometer. It is found that many 211 particles are very small with diameter of submicrometre size. Also, some 211 particles with 250 nm in diameter exist in this sample. A high density of stacking faults and dislocations is observed. In the low field region, Jc decreases with the field according to a power law at temperatures above 60 K. An exponential temperature relationship between the critical current density (Jc) and temperature is established in the high field region. In addition, the field and temperature dependence of the relaxation rate exhibits a plateau over a temperature region from 30 K to 65 K, illustrating the collective pinning nature of the pinning centres.
Towards Automatic Abandoned Object Classification in Visual Surveillance Systems (2007)

One of the core components of any visual surveillance system is object classification, where detected objects are classified into different categories of interest. Although in airports or train stations, abandoned objects are mainly luggage or trolleys, none of the existing works in the literature have attempted to classify or recognize trolleys. In this paper, we analyze and classify images of trolleys, bags, persons, and groups of people by using various shape features. We conducted a set of experiments with a number of uncluttered (images collected from the Internet with clear background) and cluttered images (images segmented out from the background in real videos) using various criteria. Our experimental results show that the features extracted enable 100% recognition accuracy for the trolley category. For our four-class object recognition problem, we achieved an overall recognition accuracy of 83.3% and an average false positive rate of 6%.
The effect of apparent amylose content and dietary fibre on the glycemic response of different varieties of cooked milled and brown rice (2012)

Brown rice is a good source of dietary fibre (DF) and contains higher vitamins/minerals than milled rice. The study determined the effect of amylose content (AC) and DF on glucose response (GR) from different varieties of milled and brown rice. Milled and brown rice were used as test foods. They were fed to 9-10 human volunteers containing 50 g available carbohydrate after an overnight fast. GR and the glycemic index (GI) were determined. Results found that Sinandomeng with the lowest AC had a high GI = 75, while PSBRc10 with the highest AC had a low GI = 50. Sinandomeng with a low DF had GI = 75, while its brown rice had GI = 55. Brown rice (IR64) with 23% AC and DF of 2.5 g/100 g had low GI = 51. In conclusion, the GR and GI of the different varieties of cooked milled and brown rice varied depending on its AC and DF contents.
Ru cyclooctatetraene precursors for MOCVD (2011)

A series of Ru(0) cyclooctatetraene complexes are presented with optimal properties for MOCVD (metal organic chemical vapour deposition) applications, including combinations of the two lowest melting points and lowest decomposition temperatures yet reported for such materials. The compounds are easy to handle and lead to highly conformal thin films of Ru on SiO(2) features; even within holes with aspect ratios of 40 : 1. SEM, AFM and XPS studies confirm the near ideal nature of the resulting conformal thin film.
Using Adaline Neural Network for Performance Improvement of Smart Antennas in TDD Wireless Communications (2005)

In time-division-duplex (TDD) mode wireless communications, downlink beamforming performance of a smart antenna system at the base station can be degraded due to variation of spatial signature vectors corresponding to mobile users especially in fast fading scenarios. To mitigate this, downlink beams must be controlled by properly adjusting their weight vectors in response to changing propagation dynamics. This can be achieved by modeling the spatial signature vectors in the uplink period and then predicting them to be used as beamforming weight vectors for the new mobile position in the downlink transmission period. We show that ADAptive LInear NEuron (ADALINE) network modeling based prediction of spatial signatures provides certain level of performance improvement compared to conventional beamforming method that employs spatial signature obtained in previous uplink interval. We compare the performance of ADALINE with autoregressive (AR) modeling based predictions under varying channel propagation (mobile speed, multipath angle spread, and number of multipaths), and filter order/delay conditions. ADALINE modeling outperforms AR modeling in terms of downlink SNR improvement and relative error improvement especially under high mobile speeds, i.e., V = 100 km/h.
Genetic Plasticity ofVGenes Under Somatic Hypermutation: Statistical Analyses Using a New Resampling-Based Methodology (1999)

Evidence for somatic hypermutation of immunoglobulin genes has been observed in all of the species in which immunoglobulins have been found. Previous studies have suggested that codon usage in immunoglobulin variable ( V ) region genes is such that the sequence-specificity of somatic hypermutation results in greater mutability in complementarity-determining regions of the gene than in the framework regions. We have developed a new resampling-based methodology to explore genetic plasticity in individual V genes and in V gene families in a statistically meaningful way. We determine what factors contribute to this mutability difference and characterize the strength of selection for this effect. We find that although the codon usage in immunoglobulin V genes renders them distinct among translationally equivalent sequences with random codon usage, they are nevertheless not optimal in this regard. We find that the mutability patterns in a number of species are similar to those we find for human sequences. Interestingly, sheep sequences show extremely strong mutability differences, consistent with the role of somatic hypermutation in the diversification of primary antibody repertoire in these animals. Human TCR V β sequences resemble immunoglobulin in mutability pattern, suggesting one of several alternatives, that hypermutation is functionally operating in TCR, that it was once operating in TCR or in the common precursor of TCR and immunoglobulin, or that the hypermutation mechanism has evolved to exploit the codon usage in immunoglobulin (and fortuitously, TCR) rather than vice-versa. Our findings provide support to the hypothesis that somatic hypermutation appeared very early in the phylogeny of immune systems, that it is, to a large extent, shared between species, and that it makes an essential contribution to the generation of the antibody repertoire.
Development of the Powderpost Beetle (Coleoptera: Bostrichidae) at Constant Temperatures (2009)

Development of Dinoderus minutus was studied under laboratory conditions at five constant temperatures (15, 18, 25, 28, and 30 degrees C) to estimate developmental thresholds and thermal requirements of the egg, larva, pupa, and egg-to-adult stages. Adults began to burrow along the grain into bamboo pieces within 24 h after cutting and continued across the grain. Female beetle oviposited an average of 9.1 eggs in the ensuing 24 h, all in the metaxylem. The average period for development of eggs, larva, and pupa were 5.4, 43.8, and 4.6 d at 30 degrees C, respectively. The development rate data were regressed through the x-axis to derive the thermal constants of 4.3, 6.8, and 4.5 degrees C and thermal requirements of 113.6, 909.1, and 96.2 DD to predict D. minutus egg oviposition to hatch, larva-to-pupa development, and adult emergence from pupa, respectively. The thermal threshold for egg-to-adult development was 6.4 degrees C, with total thermal requirements of 1,111.1 DD. Oviposition, emergence, and thermal requirements for development of the various stages of D. minutus may be used for postharvest pest management of bamboo.
An Enhanced Robust Entropy Coder for Video Codecs Based on Context-Adaptive Reversible VLC (2007)

This paper proposes an enhanced RVLC coder, context-adaptive reversible variable length coder (CRVLC), for DCT coefficients by using the techniques of data sub-partitioning and context modeling. The data sub-partitioning means that the data part of DCT coefficients is split into several small sub-partitions. As each sub-partition can be reversibly decoded by RVLC, more data as well as higher error resilience can be obtained. The context modeling exploits the correlation of DCT coefficients for further compression. This modeling defines the contexts by hierarchical-dependent information. The information is also available in the backward decoding, so that it supports the reversible decoding. And with it the data outputted by CRVLC can be naturally placed into multiple sub-partitions.
An Artificial Ion Channel Formed by a Macrocyclic Resorcin[4]arene with Amphiphilic Cholic Acid Ether Groups (2001)

Eine Kleinformat-Doppelschichtmembran inklusive Ionenkanal wurde bei der End-zu-End-Anordnung zweier Moleküle eines Resorc[4]arens erhalten (siehe schematische Darstellung). Die Steroid-Einheiten bieten den Vorteil, dass die Poren relativ lang geöffnet sind (2.5–4.5 s; im Falle gewöhnlicher Alkylketten dagegen nur wenige zig Millisekunden), und ermöglichen es, die hydrophilen Öffnungen zu modifizieren, ohne die Gesamtstruktur zu verändern.
STRONGER TOGETHER; COLLABORATION AS A MATTER OF COURSE, Publishers Round Table (2019)

Panel
Formal Analysis of Access Control Policies for Pattern-Based Business Processes (2009)

We propose formal analysis of access control policies associated with business processes. Formal analysis of such policies enables us to investigate certain properties of interest and determine whether they hold. Discovering whether these policies create the intended effects, especially when the number of policies is increased and often composed, can become complex. In addition, we believe that access control policies must be specified in such a way that their integration into business processes is straightforward. Prior research has focused on formal verification of either access control policies or business processes but not viewed the two as an integrated whole. We show an approach in which access control policies and business processes are described using the same foundational building blocks, consequently, integration of access control policies and business processes is significantly less complex. Furthermore, access control policies can now be described by business patterns, and this description may result in discovery of access control patterns that can be used in the future. Finally, our approach through the use of business patterns is capable of modeling access control policies in the same way an access control model does. In addition, these policies can be specified and extended using rules, and in this respect, are akin to a policy language.
Hormonal Therapy Promotes Hormone-Resistant Phenotype by Increasing DNMT Activity and Expression in Prostate Cancer Models (2011)

We hypothesized that hormonal therapy favors the development of the hormone-resistant phenotype through epigenetic mechanisms. Human prostate cancer tissues and in vitro and in vivo models were used to verify this hypothesis. We demonstrated that tumor cells continuously treated with bicalutamide (BCLT) or cultured in androgen-depleted medium progressively acquire higher DNA methyltransferase (DNMT) activity and expression than cells cultured in standard condition. Increased DNMT expression and activity also paralleled the up-regulation of truncated AR isoforms, which favors the development of the hormone-resistant phenotype. After androgen stimulation with 10(-12) m dihydrotestosterone, DNMT activity was significantly reduced in comparison with hormonal therapy. Consistent with these observations, the silencing of DNMT3a and DNMT3b significantly decreased the DNMT activity levels. These findings were also directly correlated with phosphatase and tensin homolog down-regulation and activation of ERK and phosphatidylinositol 3-kinases/AKT8 virus oncogene cellular homolog pathways. The use of a pan-DNMT inhibitor (5-Azacitidine) greatly reduced the development of the hormone-resistant phenotype induced by long-term BCLT treatment, and this finding correlated with low DNMT activity. The regulation of DNMT activity was, in some measure, dependent on the androgen receptor, as small interfering RNA treatment targeting the androgen receptor greatly decreased the modulation of DNMT activity under androgenic and antiandrogenic stimulation. These observations were correlated in vivo in patients, as demonstrated by immunohistochemistry. Patients treated by BCLT before surgery had higher DNMT3a and DNMT3b expression than patients who had not undergone this treatment. Our findings provide evidence of a relationship between the castration-resistant phenotype and DNMT expression and activity in human prostate cancer.
A new color transform for RGB coding (2005)

This paper presents a new color transform (YSbSr) that increases the coding efficiency for RGB space by reducing the conversion error and coding error propagation that happen during the color space conversion. Traditionally the use of color transforms has been limited to maintain the compatibility with black-and-white transmission. But for high quality video for professional applications, the focus should change accordingly. Recently during the course of development for Professional Extensions of the MPEG-4 AVC H.264 standard, new color transforms have been proposed. These transforms are focusing on the decorrelation and reversibility using a lifting scheme for integer implementation. But in a real coding scenario, lossless coding is rare and coding error is inevitable. So we have to deal with the propagation of coding error due to the backward conversion to RGB space. Even though integer mapping is a charming factor, it is more desirable not to employ integer mapping if we lose the original goal, high decorrelation gain with small conversion error. Since the conversion equation takes up a very small portion of coder complexity, the difference between integer mappings and floating point operation is diluted. Based on this observation, we propose a new color transform that gives: high decorrelation gain with small rounding and conversion error. The simulation results show that we can achieve almost up to 2 dB gain compared with the traditional YCbCr color space using the proposed transform. It makes the proposed color transform a good candidate for applications that need to preserve the original color fidelity.
Human thermoregulation and obesity (2009)

On average 80% of muscular physical activity energy has to be released by the body as heat. Obese people have a thick insulating fat layer. We investigated whether the concomitant thermal isolation can fundamentally limit heat dissipation and therefore exercise capacity in the obese. To estimate key values of thermoregulatory properties in humans, relevant mechanisms, models, their parametrization and data that were taken from the literature. Investigated thermoregulatory relevant properties and mechanisms included body heat capacity, clothing, sweating, vasodilation, respiratory evaporation, and body thermal resistance. We found that the most effective mechanisms for heat loss during exercise are vasodilation (increased tissue conductance) and sweating. Thermal insulation by the fat layer is effectively shunted by increased skin blood flow. Since muscle and skin compete for blood flow for energy supply and heat transport, respectively, we hypothesize that cardiac output and tissue/muscle blood flow are major players in thermoregulation in the obese. The available data suggest that in untrained obese, tissue conductance as well as sweating rate are significantly lower than in lean, fit people, with total heat loss capacity possibly limited to 350 W. It is concluded that thermoregulation may fundamentally restrict exercise performance in unfit obese.
Generador automático de modelos de datos normalizados en bases de datos relacionales (2013)

El proposito de este proyecto de investigacion es disenar y construir un aplicativo que sea capaz de resolver situaciones reales en la obtencion de disenos de modelos de datos en bases de datos relacionales, basado en el concepto informatico de sistema experto y partiendo de un conjunto de datos desnormalizado. El resultado de esta propuesta es lograr: •Una herramienta a disposicion del plantel docente y estudiantes de Gestion de Datos, asignatura de la Carrera de Ingenieria en Sistemas de Informacion, Universidad Tecnologica Nacional, Facultad Regional Cordoba. •Un aplicativo para la validacion de conocimientos adquiridos por los estudiantes. •Antecedentes para nuevos estudios relacionados y que amplien lo logrado con ingenieria del conocimiento. •La aplicacion de conceptos y procedimientos de la inteligencia artificial en el proceso de normalizacion de una base de datos relacional. •Una base de conocimiento en las dos especialidades: normalizacion de modelos de datos e ingenieria del conocimiento, que seran centrales en este proyecto y utiles como recursos de posteriores incursiones en investigaciones futuras. Para todo esto es necesario desarrollar estudios y aprendizajes en el area de Ingenieria del Conocimiento y del lenguaje CLIPS en particular, como lenguaje de programacion a utilizar. Palabras clave: normalizacion, modelo relacional, ingenieria del conocimiento, sistemas expertos, estructuras de datos, generador.
Elevated mercury concentrations in the feathers of grey-faced petrels (Pterodroma gouldi) in New Zealand (2017)

Our objective was to measure the concentrations of Hg, As, Cd, Co, Cr, Cu, Pb, Sb, V and Zn in the body feathers of grey-faced petrel (Pterodroma gouldi), fluttering shearwater (Puffinus gavia), little shearwater (Puffinus assimilis) and common diving petrel (Pelecanoides urinatrix) from breeding colonies in New Zealand between 2006 and 2013. The mean Hg concentration (36.48ppm; SD=9.59) in grey-faced petrel feathers was approximately 8.5 to 14 times that detected in the other three species sampled. We detected no trend or differences in Hg concentrations in grey-faced petrels over the 8years of this study, but Hg concentrations varied between breeding colonies although there was no strong relationship with latitude. The elevated Hg concentrations detected in grey-faced petrels could pose a risk to the breeding performance of grey-faced petrels and the customary harvest of chicks by Māori (New Zealand's indigenous peoples).
Muon spin relaxation study of exchange biased Co/CoO (2003)

The local magnetic properties of an exchange biased Co/CoO nanoparticle system have been examined using zero-field muon spin relaxation (ZF-\ensuremath{\mu}SR) spectroscopy. A direct measure of magnetic domains experiencing the exchange coupling due to the ferromagnetic core and antiferromagnetic shell of the Co nanoparticles is given by the observation of an oscillating signal in the field-cooled ZF-\ensuremath{\mu}SR spectra that is a clear and unambiguous signature of static magnetic correlations. Excellent agreement between the local field determined from the \ensuremath{\mu}SR oscillation and the bulk exchange bias loop shift confirms this interpretation. Furthermore, the unique line shape and increase in moment fluctuation rate on cooling the exchange biased sample are strong indications that spin-density-wave-like behavior is associated with setting the exchange bias in this system. This static field oscillation is likely due to the twisted moment directions at the interface.
Hybrid autonomous transceivers (2012)

A small photocell and a non-linear vibration energy harvester have been used to power a low power wireless transceiver device. The device, a technology demonstrator, is self-powered and works without any battery on board. It is able to transmit at few meters distance data such as the temperature and the power supply voltage values in the 2,4 GHz ISM band every 10 seconds.
BMP2 and FGF2 cooperate to induce neural-crest-like fates from fetal and adult CNS stem cells (2005)

CNS stem cells are best characterized by their ability to self-renew and to generate multiple differentiated derivatives, but the effect of mitogenic signals, such as fibroblast growth factor 2 (FGF2), on the positional identity of these cells is not well understood. Here, we report that bone morphogenetic protein 2 (BMP2) induces telencephalic CNS stem cells to fates characteristic of neural crest and choroid plexus mesenchyme, a cell type of undetermined lineage in rodents. This induction occurs both in dissociated cell culture and cortical explants of embryonic day 14.5 (E14.5) embryos, but only when cells have been exposed to FGF2. Neither EGF nor IGF1 can substitute for FGF2. An early step in this response is activation of beta-catenin, a mediator of Wnt activity. The CNS stem cells first undergo an epithelial-to-mesenchymal transition and subsequently differentiate to smooth-muscle and non-CNS glia cells. Similar responses are seen with stem cells from E14.5 cortex, E18.5 cortex and adult subventricular zone, but with a progressive shift toward gliogenesis that is characteristic of normal development. These data indicate that FGF2 confers competence for dorsalization independently of its mitogenic action. This rapid and efficient induction of dorsal fates may allow identification of positional identity effectors that are co-regulated by FGF2 and BMP2.