Miracle-dz/UniFAR-FTUs huggingface dataset:
Tests on Suitability of the Ignition Source â€œexploding Wireâ€ for the Determination of Explosion Characteristics of Combustible Dusts in the 20-l-sphere

Tests on Suitability of the Ignition Source “Exploding Wire” for the Determination of Explosion Characteristics of Combustible Dusts in the 20-L-Sphere Marc Scheid*, Christian Kusche, Volkmar Schroder, Uli Barth a Federal Institute for Materials Research and Testing (BAM), Department 2 “Chemical Safety Engineering”, D-12200 Berlin, Germany b Bergische Universitat Wuppertal, Chair “Methods of Safety Engineering and Incident Research”, D-42119 Wuppertal, Germany marc.scheid@bam.de
A study of genetic diversity in Oryza rhizomatis D.A. Vaughan accessions using AFLP markers and morphological traits

Oryza rhizomatis is a wild rice species endemic to Sri Lanka and is reported to have tolerance to biotic and abiotic stresses prevailing in the dry zone of the country. Several morphological differences have been observed in O. rhizomatis grown under different agro- ecological conditions of Sri Lanka. Therefore, these rice species (accessions) may have genetic differences to consider them as 'ecotypes'. Morphological and genetic diversity of O.rhizomatis accessions collected from different locations were carried out to observe genetic differences among them. Scattered diagram of PCoA of O. rhizomatis accessions, based on morphological data showed that there were no significant differences among them. According to molecular analysis by AFLP, all the accessions were genetically similar and Jaccard genetic similarity coefficient varied with a very narrow range between the accessions (0.915 to 1.000). According to the results, the O. rhizomatis accessions tested did not show significant morphological and genetic differences. In this study representative samples from different locations were grown in the green house, exposing them to the same environmental conditions. This may have contributed to results obtained with no observable morphological differences. Further studies have to be carried out with insitu collections from different locations when extreme weather conditions are prevailing to see the morphological characters are changed as an adaptation and to assess any genetic diversity.
Interactive comment on “Redox activity and chemical speciation of size fractioned PM in the communities of the Los Angeles – Long Beach Harbor” by S. Hu et al

The discussion paper studies the relationship between the chemical composition of particulate matter and the corresponding activity in two oxidative stress related assays: one quantifying ROS generated by rat alveolar macrophages, and one quantifying redox activity with the dithiothreitol assay. Correlation between the assays indicates that there is some commonality in the chemical species that contribute to each assay. The
TCP-Friendliness of Modified Explicit Rate Adjustment

Explicit Rate Adjustment (ERA) protocol is among the Layered Multicast Protocols (LMPs) that was designed for supporting multimedia data transmission. It uses combination of equation-based and packet pair estimation techniques to estimate the rate for data transmission. Although ERA protocol has several advantages over previous LMPs, there are a few flaws in its design and implementation. The flaws are concerning with Round Trip Time (RTT) and Packet Loss Rate (PLR), which are the main parameters of TCP-Equation Model. Thus, some modifications on ERA protocol have been made to improve its performances. The modified protocol is called modified ERA. This paper reports the evaluation performance ERA and modified ERA in term of TCP- Friendliness. The evaluation is performed using simulation and the result show modified ERA achieves superior performance.
Exponential Stability of Stochastic Delayed Neural Networks with Inverse Hölder Activation Functions and Markovian Jump Parameters

The exponential stability issue for a class of stochastic neural networks (SNNs) with Markovian jump parameters, mixed time delays, and -inverse Holder activation functions is investigated. The jumping parameters are modeled as a continuous-time finite-state Markov chain. Firstly, based on Brouwer degree properties, the existence and uniqueness of the equilibrium point for SNNs without noise perturbations are proved. Secondly, by applying the Lyapunov-Krasovskii functional approach, stochastic analysis theory, and linear matrix inequality (LMI) technique, new delay-dependent sufficient criteria are achieved in terms of LMIs to ensure the SNNs with noise perturbations to be globally exponentially stable in the mean square. Finally, two simulation examples are provided to demonstrate the validity of the theoretical results.
Threshold for neoclassical magnetic islands in a low collision frequency tokamak

A kinetic theory for magnetic islands in a low collision frequency tokamak plasma is presented. Self‐consistent equations for the islands’ width, w, and propagation frequency, ω, are derived. These include contributions from the perturbed bootstrap current and the toroidally enhanced ion polarization drift. The bootstrap current is independent of the island propagation frequency and provides a drive for the island in tokamak plasmas when the pressure decreases with an increasing safety factor. The polarization drift is frequency dependent, and therefore its effect on the island stability cannot be deduced unless ω is known. This frequency is determined by the dominant dissipation mechanism, which for low effective collision frequency, νeff=ν/e<ω, is governed by the electrons close to the trapped/passing boundary. The islands are found to propagate in the electron diamagnetic direction in which case the polarization drift is stabilizing and results in a threshold width for island growth, which is of the order of the ion banana width. At larger island widths the polarization current term becomes small and the island evolution is determined by the bootstrap current drive and Δ′ alone, where Δ′ is a measure of the magnetic free energy.
A generic data analytics system for manufacturing production

The increase in the amount of manufacturing information available means that big data can be collected and, with appropriate deep analysis, could be of great value to manufacturers. However, most small manufacturers cannot afford the overhead of a professional data analytics team. To address this problem, in this paper a generic data analytics system, Generic Manufacturing Data Analytics system (GMDA), is proposed. This system can perform most manufacturing data analytics tasks and users can easily carry out data analysis even if they have no prior knowledge or experience of data analytics. To establish such a system, we designed an abstract language, GMDL, to describe the manufacturing data analytics tasks. Aimed at factory data analytics, several algorithms were selected, tuned, optimized, and finally integrated into the system. Some noteworthy techniques were developed in GMDA such as proper algorithm selection strategy and an optimal parameter determination algorithm. Case studies show the practicability and reliability of the system.
Two-degree-of-freedom anti-aliasing technique for wide-band networked control

Abstract In this paper we propose a new anti-aliasing technique for wide band networked control schemes. We study the potential equivalence with the usual one-degree-of-freedom anti-aliasing filtering. The benefits of the proposed anti-aliasing approach are illustrated with a simple example that incorporates an MPC controller in a Networked Control framework.
Polarimetry of evolved stars I. RS CVn and Mira variables

We present broadband optical polarimetry of 3 RS CVn stars and 3 Mira variables, including the symbiotic star R Aqr, which contains a Mira component. Polarimetric variability has been studied on time- scales from hours to years. Our programme objects at the time of our observations showed dierent forms of P () dependence, P/ 4 for most of the RS CVn-type stars, and P/ 2 for the RS CVn-type star UV Psc and the Mira Ceti-type variables, and a signicant increase of polarization to the red for the Mira R Cet. Combining our data with previously published data, we conclude that most of RS CVn-type and Mira Ceti-type objects show evidence of large polarimetric variability at wavelengths shorter than 0.5m, whereas the level of polarization is more stable in the red. This behaviour is consistent with episodic mass ejection and formation of small dust particles in the circumstellar environment. Although all targets showed polarimetric variability on dierent time scales, only for IM Peg might these variations be possibly linked with the photometric period.
PROSPECTION GEOPHYSIQUE - TOME 1 PROSPECTION SISMIQUE

Traduction par Leenhardt,O du chapitre 4 de l'ouvrage Applied Geophysics (DIRR 222748). L'ouvrage donne d'abord un apercu rapide de l'histoire de la prospection sismique et des methodes employees sur le terrain pour obtenir les donnees. Puis une breve discussion des methodes sismiques suivra, de maniere a faciliter la comprehension des chapitres suivants. Ceux-ci concerneront la theorie de la propagation des ondes sismiques, la geometrie des trajets sismiques et les caracteristiques des signaux sismiques. Ensuite, il examine plus en detail le materiel d'enregistrement et les techniques employees sur le terrain en reflexion et en refraction, a terre ent en mer. Enfin, il decrit le traitement des donnees et discute les techniques d'interpretation.
Optimal Hedging with the Cointegrated Vector Autoregressive Model

We derive the optimal hedging ratios for a portfolio of assets driven by a Cointegrated Vector Autoregressive model (CVAR) with general cointegration rank. Our hedge is optimal in the sense of minimum variance portfolio. We consider a model that allows for the hedges to be cointegrated with the hedged asset and among themselves. We find that the minimum variance hedge for assets driven by the CVAR, depends strongly on the portfolio holding period. The hedge is defined as a function of correlation and cointegration parameters. For short holding periods the correlation impact is predominant. For long horizons, the hedge ratio should overweight the cointegration parameters rather then short-run correlation information. In the infinite horizon, the hedge ratios shall be equal to the cointegrating vector. The hedge ratios for any intermediate portfolio holding period should be based on the weighted average of correlation and cointegration parameters. The results are general and can be applied for any portfolio of assets that can be modeled by the CVAR of any rank and order.
Antecedents to export performance and how italian and slovenian smes innovate during times of crisis

This paper explores how small and medium enterprises (SMEs) operating in Northern Italy and Slovenia used their innovative potential to expan business across the border while their home markets suffered from the great recession that started in 2007. The background of the study is an analysis of the antecedents to export performance and internationlization, which specifically asked whether innovating incrementally or innovating radically contributes to export performance in foreign markets and how this ultimately interacts with strategic considerations and the propensity to take risks. The findings of the study showed that export performance is positively influenced by incremental innovation and risk preference and that there is a relationship between innovation and export performance. These findings contribute to the question whether classical internationalization theories such as the Uppsala Internationalization Model and the Innovation-related Model, can be applied in contingency situations of economic crisis.
Optimal Signal Sets and Binary Labelings for BICM at low SNR

Optimal binary labelings, input distributions, and input alphabets are analyzed for the so-called bit-interleaved coded modulation (BICM) capacity, paying special attention to the low signal-to-noise ratio (SNR) regime. For 8-ary pulse amplitude modulation (PAM) and for 0.75 bit/symbol, the folded binary code results in a higher capacity than the binary refle cted Gray code (BRGC) and the natural binary code (NBC). The 1 dB gap between the additive white Gaussian noise (AWGN) capacity and the BICM capacity with the BRGC can be almost completely removed if the input symbol distribution is properly selected. First-order asymptotics of the BICM capacity for arbitrary input alphabets and distributions, dimensions, mean, variance, and binary labeling are developed. These asymptotics are used to define first-order optimal (FOO) constellations for BICM, i.e., constellations that make BICM achieve the Shannon limit 1.59 dB. It is shown that the Eb/N0 required for reliable transmission at asymptotically low rates in BICM can be as high as infinity, that for uniform input distributions and 8-PAM t here are only 72 classes of binary labelings with a different first - order asymptotic behavior, and that this number is reduced to only 26 for 8-ary phase shift keying (PSK). A general answer to the question of FOO constellations for BICM is also given: using the Hadamard transform, it is found that for uniform input distributions, a constellation for BICM is FOO if and only if it is a linear projection of a hypercube. A constellation based on PAM or quadrature amplitude modulation input alphabets is FOO if and only if they are labeled by the NBC; if the constellation is based on PSK input alphabets instead, it can never be FOO if the input alphabet has more than four points, regardless of the labeling. Index Terms—Average mutual information, binary labeling, bit-interleaved coded modulation, channel capacity, folded binary code, Gray code, Hadamard transform, natural binary code, PAM, PSK, QAM, Shannon limit.
Evaluation of Texture and Shape Features for Classification of Four Paddy Varieties

This research is aimed at evaluating the texture and shape features using the most commonly used neural network architectures for cereal grain classification. An evaluation of the classification accuracy of texture and shape features and neural network was done to classify four Paddy (rice) grains, namely, Karjat-6(K6), Ratnagiri-2(R2), Ratnagiri-4(R4), and Ratnagiri-24(R24). Algorithms were written to extract the features from the high-resolution images of kernels of four grain types and used as input features for classification. Different feature models were tested for their ability to classify these cereal grains. Effect of using different parameters on the accuracy of classification was studied. The most suitable feature from the features for accurate classification was identified. The shape feature set outperformed the texture feature set in almost all the instances of classification.
Methods for Anonymizing Patterns of Human Mobility

In recent years, the ability to efficiently gather location information of individuals has gained a lot of attention in the research community. There are multiple methods for collecting this data, but this thesis primarily considers data collected from base stations connected to the mobile phones used by people today. Because many users use mobile subscriptions, the demographic data of the users can be collected as well. However, to maintain the privacy of the individual, the collected data must be anonymized. The aim of this master’s thesis is to develop a method to anonymize the data so that it is not possible to identify an individual with a probability above a certain threshold, while still preserving as much information as possible. The anonymization is mainly divided into two parts. The first part anonymizes the data containing the movement of individuals, while the second part anonymizes the demographic data. The principle of k-anonymization was applied in both parts, which means that each entry in the output of the anonymization is indistinguishable from k− 1 other entries. Hence, it is only possible to identify an individual with a probability of at most 1/k. For the anonymization of the demographic data a genetic algorithm was used which minimizes a new definition of information loss which is presented in this thesis. This definition was derived using the Kullback information.
Fusion as Electric Propulsion

Fusion rocket engines are analyzed as electric propulsion systems, with propulsion thrustpowertoinputpower ratiothe thrustpower "gain," G�� much greater than unity. Gain values of conventionalsolar, fissionelectric propulsion systems are always quite smalle.g. , G� < 0.8� . With these, "highthrust" interplanetary flight is not possible, because their system accelerationatcapabili� ties are always less than the local gravitational accelera� tion. In contrast, gain values 50� 100 times higher are found for some fusion concepts, which oer "high� thrust" flight capability. One performance example shows a 53.3 day � 34.4 powered; 18.9 coast� , oneway transit time with 19� payload for a singlestage Earth/ Mars vehicle. Another shows the potential for highac� celerationa� = 0.55 g0� flight in Earth/moon space.
Eficacia del Propóleos sobre Malassezia pachydermatis. Correlación de distintas Técnicas in Vitro.

RESUMEN. El propoleos es un producto obtenido en la colmena, conocido por sus propiedades antimicrobianas. Varios ensayos han demostrado esta actividad, pero los resultados son contradictorios y escasos. El objetivo de este trabajo fue determinar la accion del extracto etanolico de propoleos sobre cepas de Malassezia pachydermatis, aisladas del conducto auditivo de caninos con diagnostico clinico de otitis externa. Diferentes tecnicas de siembra fueron comparadas, a los efectos de seleccionar entre ellas la mas adecuada, para determinar la eficacia del propoleos sobre M. pachydermatis.De todas las tecnicas empleadas la dilucion en placa de agar Sabouraud fue la mas apropiada, ya que permitio realizar una lectura clara y sencilla de los resultados obtenidos. A traves de la misma se demostro la sensibilidad in vitrode las cepas estudiadas al extracto etanolico de propoleos utilizado en el presente trabajo. SUMMARY. “Efficiency of Propolis on Malassezia pachydermatis.Correlation of Different In Vitro T e c hniques”. Propolis is a product obtained in the beehive, well-known by its antimicrobial activity. Several assays have demonstrated such activity, but the results were scarce and contradictory. The objective of this work was to determine the action of the ethanolic extract of propolis over strains of Malassezia pachydermatis, isolated of the external ear channel of dogs with clinical diagnosis of external otitis. Different inoculation techniques were compared to select the most appropriate method for assessing the antimicrobial activity of the propolis over M . pachydermatis.The agar dilution method using Sabouraud agar demonstrated to be the most suitable, for it allowed a clear and simple reading of the obtained results. The susceptibility in vitroof the studied strains of Malassezia pachydermatisto the ethanolic extract of propolis used in the present work was observed.
Quantitative Relationships Among Golden-Cheeked Warbler Occurrence and Landscape Size, Composition, and Structure

Abstract The golden-cheeked warbler (Dendroica chrysoparia) is a federally listed endangered species with an extremely limited breeding range (Edwards Plateau, Tex., USA) and specific habitat requirements. Although localized habitat composition and structure correlate well with golden-cheeked warbler occurrence and nest location, the effects of landscape composition and structure are largely untested. To investigate landscape-scale influences on habitat occupancy, we surveyed 202 point locations for golden-cheeked warbler presence. We used logistic regression to compare the relative influence of 4 landscape-scale variables (largest patch index, percent of the landscape in woodland, mean-nearest neighbor, and edge density) measured at 4 spatial scales (3 ha, 12 ha, 50 ha, and 200 ha) in predicting occurrence. The amount of mature juniper–oak (Juniperus ashei and Quercus spp.) woodland in the landscape was the single most important variable across spatial scales and average values of woodland cover remained stable across scales. Golden-cheeked warblers occurred in a local habitat only when landscape composition exceeded 40% woodland and the likelihood of occurrence was greater than 0.5 only when landscape composition exceeded 80% woodland. By contrast, common measures of habitat fragmentation, including edge density and mean-nearest neighbor, were poor predictors of species occurrence across all spatial scales. Our results suggest that golden-cheeked warblers may be less sensitive to fragmentation then they are to overall habitat loss, which may be due to natural habitat heterogeneity related to the variable terrain. Our results do not preclude a relationship between habitat fragmentation and overall habitat quality as measured by nesting success, survival, and recruitment. While our results hold promise for increasing the reliability of predicting species occurrence, future studies are needed to determine the influence of landscape composition and structure on the ultimate measures of habitat quality.
Growth, crown architecture and leaf dynamics of saplings of five mangrove tree species in Ranong, Thailand

We investigated the regeneration pattern of mangrove forests, considering the corre- spondence between growth strategies (i.e. sapling growth, crown architecture, leaf dynamics) of 5 canopy-dominant species and the disturbance regime in Ranong, Thailand. Individual canopy gap size and percent gap area were greater in the Sonneratia alba-Avicennia alba (SA) zone, which is located on the most seaward fringe, than in the other inland zones. In canopy gaps, the seaward species S. alba and A. alba showed a higher relative height growth rate than the inland species Rhizophora apiculata, Bruguiera gymnorhiza and Xylocarpus granatum. Under closed canopies, the seaward species showed greater mortality, presumably due to their low shade tolerance, while the inland species demonstrated a net growth in spite of the dark conditions. Leaf longevity of sunlit saplings increased from seaward to inland species. The 2 seaward species had well-branched, slen- der and deeper crowns, while R. apiculata and B. gymnorhiza had wider and flatter crowns, and X. granatum had less-branched, smaller crowns. Phenotypic traits were correlated with each species' growth strategy (potential growth rate and shade tolerance), which corresponded to the disturbance regime in each vegetation zone. Many large gaps may enhance the abundance of S. alba and A. alba in the SA zone, and a few small gaps may prevent establishment and growth of light-demanding species in the inland zones. Accordingly, the correspondence of disturbance regime and growth strategies of canopy-dominant species provides an advantage for successful regeneration, and may contribute to the maintenance of the present species composition in each vegetation zone.
Challenging Segregational Practices in a Spanish Secondary School: Results from an Ethnographic Research.

This article presents partial results of a multi-sited ethnographic study about the role of multiple literacies in young people’s learning in and outside school. In one of the five participant secondary schools, fourth grade students were segregated in groups according to their special needs. We start with a critical review on segregated and inclusive education. Subsequently, we describe our ethnographic research about learning practices in and outside secondary schools with students in their last year of compulsory education. The results present the relationships between students who were either “failing” or “being successful” in school as well as the institutional reaction to our inclusive experience. Key words: Collaborative practices, ethnographic study, school segregation, young people.