cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigation of time-domain measurements for analysis and machine recognition of speech
Creators: name: Ito, Mabo Robert
Publisher: name: University of British Columbia
Year: 2011

description: At present in speech analysis and mechanical speech recognition work, spectral measurements are the conventional form of signal representation and acoustical descriptions of speech sounds are usually given in terms of this form of representation. In this thesis, certain time-domain measurements are investigated as an alternative form of signal representation and as a basis for acoustical characterization of speech sounds. The primary measurements studied are the short-time averages of the zero-crossing rate of the acoustic waveform and the distribution patterns of the time intervals between zero-crossings. These measurements are found to be easy to implement with digital techniques and are implemented through digital computer simulation. Other advantages of these measurements include effectiveness in handling the large intensity range of speech sounds and ability to track rapid transient phenomena such as the release of unvoiced stops. Computer software for an interactive graphics facility was developed for acquisition, presentation, manipulation and analysis of the acoustic speech data. One of the pattern analysis programs, for the display of time-interval distribution data, yielded a visual presentation which could be compared to frequency spectrograms. Theoretical expressions are developed to relate the time-domain and spectral representation for some phone types and these relationships are compared with experimental results. The above theoretical expressions show that important spectral characterization features are accounted for. These findings, combined with empirical observation of the utility of the time-domain signal representation in phonetic characterization, indicates that this form of representation is a useful alternative to the spectral representation. The speech materials employed were selected to study temporal structures and contextual variations of acoustic properties and to provide quantitative data useful for word recognition applications. The vowels, fricatives and stops were the main phoneme classes studied. Quantitative data on the acoustic properties of the selected phonemes is presented and discussed in terms of i) our own spectral data, ii) other data reported in the literature and iii) simple production models. The time-domain signal representation was found to provide an effective means of analyzing and characterizing the acoustically complex stops and voiced fricatives. For the vowels and unvoiced fricatives, which are well suited to spectral analysis, the time domain measurements were found to yield very simple and direct characterization features. Some limited phonemic decomposition and machine recognition work is described which demonstrates the design of useful characterization features and provides a basis for further work.
The Many Faces of the Subspace Theorem (after Adamczewski, Bugeaud, Corvaja, Zannier...)
Creators: name: Bilu, Yuri
Publisher: name: arXiv
Year: 2009
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: During the last decade the Subspace Theorem found several quite unexpected applications, mainly in the Diophantine Analysis and in the Transcendence Theory. Among the great variety of spectacular results, I have chosen several which are technically simpler and which allow one to appreciate how miraculously does the Subspace Theorem emerge in numerous situations, implying beautiful solutions to difficult problems hardly anybody hoped to solve so easily. The three main topics discussed in this article are: the work of Adamczewski and Bugeaud on complexity of algebraic numbers; the work of Corvaja and Zannier on Diophantine equations with power sums; the work of Corvaja and Zannier on integral points on curves and surfaces, and the subsequent development due to Levin and Autissier. In particular, we give a complete proof of the beautiful theorem of Levin and Autissier: an affine surface with 4 (or more) properly intersecting ample divisors at infinity cannot have a Zariski dense set of integral points.
description: S\'eminaire Bourbaki, Expos\'e 967, 59\`eme ann\'ee (2006-2007); Ast\'erisque 317 (2008), 1-38
Evolutionary relationships among Peromyscus from the Georgia Strait, Gordon, Goletas, and Scott Islands of British Columbia, Canada
Creators: name: Thomas, Barry
Publisher: name: University of British Columbia
Year: 2011

description: My study is directed towards understanding the pattern of evolution taking place among populations of Peromyscus inhabiting the islands of British Columbia. A standard morphological approach, as veil as karyotype and reproductive isolation analyses, have shown that a taxonomic revision of this faunal group is desirable. I have proposed such a revision. A discriminant analysis utilizing morphological measurements reveals the existence of two distinctive phenotypes within the islands surveyed. Breeding studies, involving 78 pairs of insular Peromyscus, indicate that reproductive isolation exists between the two morph groups. Furthermore, when given the choice the large and small morph groups prefer the company of their own type. Extensive phallic variation occurs among island populations but no suggestion of taxonomic relationships are discernible. Karyotype analysis reveals that there are two distinct karyotypic patterns. The karyotype correlates with the two morphotype classifications. The large morph has a high number of metacentric chromosomes and the small morph has a low number. The high metacentric number karyotype is identical to that possessed by the morphologically similar Peromyscus sitkehsis known to inhabit the islands to the north of the.study group. Karyotype variation within each of the tvo major divisions is minimal. I have proposed that the karyotypic differences between these two morphs is significant at the species level. The large morph should be considered as P. sitkensis and the small phenotype should remain as P. maniculatus. The degree and rapidity of evolution within these Peromyscus populations requires a broadening in the scope of some subspecific taxa. Change in subspecific nomenclature has been indicated. Additional studies of Peromyscus upon the adjacent mainland and Vancouver Island are required before meaningful relationships can be expressed between insular and mainland groups at the subspecific level.
The interaction of humic acids from Tasmanian Podzolic soils with minerals and the properties of their metal humates
Creators: name: Baker, William Ernest
Publisher: name: University Of Tasmania
Year: 2023

description: The humic acids from podzolic soils of north-western and western Tasmania have the general chemical and optical properties of the group as described in the literature. They do not correspond closely to the humic acids of the classical Northern Hemisphere podzol in that they have higher C : H ratios and lower optical densities. In addition they provide a far higher proportion of the total humic substances than do the humic acids of the classical podzol. All samples of humic acids extracted from the Tasmanian soils exhibit very strong solvent activity towards minerals, particularly those of economic deposits. For example, 50 ml of a 500 mg/ solution of the humic acids from soil developed under white topped stringybark (Eucalyptus delegatensis) and bracken fern (Pteridium aquilinum), extracted 2 500 pg of lead from 7.6 g of 0.3 to 0.6 mm diameter grains of galena in 24 hours. Even gold is soluble in solutions of humic acids and it is likely that the formation of gold humates is the important mechanism of transport of this metal in wet temperature climates. The aggressive action of humic acids towards minerals in the experimental studies, leaves no doubt as to their potential in weathering. Since the minerals of economic deposits are highly vulnerable, the rapid degradation of sulphides and secondary minerals may explain the poor development of gossans over mineralisation in Tasmania during the current erosional cycle. The activity of humic acids presents a problem in geochemical prospecting since secondary dispersion patterns may be weakened or obliterated. The mechanism of the interaction of humic acids with minerals and cations has been investigated by means of pH measurements, potentiometric titration, polarography, x-ray diffraction, electrophoresis and infra-red spectroscopy. All these indicate that complexation is an important mechanism of reaction. Polarographic studies also suggest that the most probable value for the standard reduction potential of humic acids is about 0.7V. Reaction kinetic studies of several of the rapid reactions between humic acids and minerals indicate that the reactions involved are of first order. The simple organic compounds of soils, such as amino acids for example, are no more active in mineral degradation than are humic acids. In view of the low concentration and rapid bacterial utilisation of these compounds their contribution to weathering must be limited. Waters enriched in CO2 also appear less efficient as solvents than humic acids, since on the basis of equivalent carbon contents the latter are far more effective. From an extremely conservative estimate, it appears that some 150 000 tonnes of humic substances flow to the sea from an aggregate catchment of about 20 000 km 2 in western Tasmania every year. Thus these substances have both the power and quantity to play an important role in the wet temperate weathering cycle.
Relative bioavailability of three cefixime formulations
Creators: name: Kees, Frieder K.
name: Naber, K. G.
name: Sigl, G.
name: Ungethüm, W.
name: Grobecker, H. F.
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 615 Pharmazie
subject: Administration, Oral
subject: Adult
subject: Biological Availability
subject: Cefixime
subject: Cefotaxime/urine
subject: Dosage Forms
subject: Female
subject: Gels
subject: Half-Life
subject: Humans
subject: Intestinal Absorption
subject: Male
subject: Powders
subject: Tablets

description: Three galenic formulations of cefixime (tablet, syrup and dry suspension) containing 200 mg each were compared with respect to their relative bioavailability in twelve healthy volunteers. All three formulations showed reliable absorption. Mean peak plasma concentrations were reached after 3.3-3.5 h, mean terminal half lives were 2.9-3.1 h. 18-24% of the dose administered were recovered unchanged in the urine. Best bioavailability was obtained with the dry suspension (AUC0-infinity = 25.8 +/- 7.0 micrograms/ml h; Cmax = 3.4 +/- 0.9 microgram/ml), followed by the tablet (AUC0-infinity = 20.9 +/- 8.1 micrograms/ml h; Cmax = 3.0 +/- 1.0 micrograms/ml) and the syrup which is based on triglycerides (AUC0-infinity = 17.8 +/- 5.9 micrograms/ml h; Cmax = 2.4 +/- 0.7 micrograms/ml). The statistical analysis resulted in bioinequivalence between dry suspension and syrup. It is concluded that best bioavailability of cefixime after oral administration is guaranteed when taken in an "aqueous medium" either as dry suspension or as tablet with "plenty of liquid".
Prisoner's Dilemma with Semi-synchronous Updates: Evidence for a First Order Phase Transition
Creators: name: Saif, M Ali
name: Gade, P. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Emergence of cooperation in self-centered individuals has been a major puzzle in the study of evolutionary ethics. Reciprocal altruism is one of explanations put forward and prisoner's dilemma has been a paradigm in this context. Emergence of cooperation was demonstrated for prisoner's dilemma on a lattice with synchronous update [Nature, 359, 826 (1992)]. However, the cooperation disappeared for asynchronous update and the general validity of the conclusions was questioned [PNAS, 90, 7716 (1993)]. Neither synchronous nor asynchronous updates are realistic for natural systems. In this paper, we make a detailed study of more realistic system of semi-synchronous updates where pN agents are updated at every time instant. We observe a transition from all-defector state to a mixed state as a function of p. Despite being transition from absorbing state, our studies indicate that it is a first order transition. Furthermore, we used damage spreading technique to demonstrate that, the transition in this system could be classified as a frozen-chaotic transition.
description: 19 pages, 15 figures
title: Africa's Space Industry Value Chain and the Sustainable Development Goals
title: Africa Space Identity
titleType: Subtitle
Creators: name: van Rooyen, Natasha
Publisher: name: Zenodo
Year: 2024

description: The African space industry hold several complex interconnected social, economic, and environmental challenges. These issues occur at both national and continental levels, aligning to the UN's Sustainable Development Goals (SDGs).

The SDGs provide a roadmap for this, allowing African nations to harness space for economic growth, environmental stewardship, and social welfare. By supporting the space industry, each citizen can directly contribute to the continent’s ability to manage resources, reduce inequality, and build resilient communities.

When space activities are guided by SDGs, they ensure that advancements benefit all, not just a privileged few, and foster inclusive growth aligned with Africa’s collective values of unity, sustainability, and communal well-being. This paper presents an overview of the problems and issues currently challenging the African space industry.A strong legal and regulatory framework serves as the foundation for tackling the complex issues tied to funding, governance, environmental responsibility, and the socioeconomic potential of space technology - all while safeguarding national and continental interests. 

he paper also lists an estimation of the current legal and policy challenges for African countries who have opted into pursuing space industry activities. It presents a case for applying the seven Principles of International Law relating to sustainable development to the African space industry and recommendation for establishing a ‘SDG-Space Value Chain’ framework that can help ensure that the national space activity policies are in line with international obligations for industry activities that are safe, sustainable, and compliant.

Author: Natasha van RooyenAs part of an assessment paper: Sustainability Development Goals and the Law.Under the program: Democratising Education for Global Sustainability and Justice.September 2024

University of Cambridge

Lucy Cavendish College

Hughes Hall
title: Methods of seismic protection of buildings and structures using pile foundation
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: Agishev, Kamil
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2016
Subjects: Ð¡ÐµÐ¹ÑÐ¼Ð¾ÑÑÐ¾Ð¹ÐºÐ¸Ðµ Ð·Ð´Ð°Ð½Ð¸Ñ Ð¸ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ
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description: Earthquakes are one of the greatest hazards. Every year, throughout the world there are about a million earthquakes, but most of them are so small that they go unnoticed. Really strong earthquake capable of causing extensive damage, occur on the planet about once every two weeks. Although have been carried out a lot of investigations, but we still cannot say that the cause of the earthquake is fully understood. This work is devoted not for predictions, but for technical methods of protecting buildings from being destroyed in a quake. In this work was developed the study model of the building located on the slope from the point of view of seismic activity; the calculation of slope stability in the PLAXIS 2D program, modeled construction system Â«building - damper deviceÂ» in the software package SAP2000; proposed the constructively new system Â«CFA anchor pile - damping device - buildingÂ».
An empirical test of the theory of random walks in stock market prices : the moving average strategy
Creators: name: Yip, Garry Craig
Publisher: name: University of British Columbia
Year: 2011

description: This study investigates the independence assumption of the theory of random walks in stock market prices through the simulation of the moving average strategy. In the process of doing so, three related questions are examined: (1) Does the past relative volatility of a stock furnish a useful indication of its future behavior? (2) Is the performance of the decision rule improved by applying it to those securities which are likely to be highly volatile? (3) Does positive dependence in successive monthly price changes exist? The purpose of Test No. 1 was to gauge the tendency for a stock's relative volatility to remain constant over two adjacent intervals of time. As measured by the coefficient of variation, the volatility of each of the 200 securities was computed over the 1936 to 1945 and 1946 to 1955 decades. In order to evaluate the strength of the relationship between these paired observations, a rank correlation analysis was performed. The results indicated a substantial difference in relative volatility for each security over the two ten-year periods. In Test No. 2 a different experimental design was employed to determine whether the relative volatility of a stock tended to remain within a definite range over time. According to their volatility in the 1936 to 1945 period, the 200 securities were divided into ten groups. Portfolio No. 1 contained the twenty most volatile securities while Portfolio No. 2 consisted of the next twenty most volatile, etc. An average coefficient of variation was calculated for each group over the periods, 1936 to 1945 and 1946 to 1955. The rank correlation analysis on these ten paired observations revealed that the most volatile securities, as a group, tended to remain the most volatile. Test No. 3 consisted of the application of the moving average strategy (for long positions only) to forty series of month-end prices covering the interval, 1956 to 1966. These securities had demonstrated a high relative volatility over the previous decade and, on the basis of the findings reported in Test No. 2, it was forecasted that they would be the most volatile of the sample of 200 in the period under investigation. Four different moving averages ranging from three to six months, and thirteen different thresholds ranging from 2 to 50 per cent were simulated. The results of the simulation showed the moving average strategy to be much inferior to the two buy-and-hold models. Every threshold regardless of the length of the moving average yielded a negative return. In addition, the losses per threshold were spread throughout the majority of stocks. Altogether, therefore, considerable evidence was found in favour of the random walk theory of stock price behavior.
FUQAROLIK HUQUQI TUSHUNCHASI VA UNING ZAMONAVIY  JAMIYATDAGI O'RNI
Creators: name: Ergashov, Iqboljon
Publisher: name: Zenodo
Year: 2023

description: O‘zbekistonda fuqarolik huquqi mulkiy, shuningdek shaxsiy nomulkiy jamoat munosabatlarini tenglik, barcha mulk shakllarining daxlsizligi va ishtirokchilari tomonidan shartnomalar tuzish erkinligi, o‘zboshimchalik bilan aralashishga yo‘l qo‘yilmasligi tamoyillariga asoslangan huquq sohasi hisoblanadi, shaxsiy ish bilan shug'ullanadigan har qanday shaxs, fuqarolik huquqlarini to'sqinliksiz amalga oshirish, buzilgan huquqlarning tiklanishini ta'minlash, ularning sud himoyasi zarurligi, fuqarolik huquqi xususiy huquqning asosidir.
Differences in educational readiness : a study of the differences in language development, perceptual skills and behaviour in a group of Tasmanian children when they entered kindergarten.
Creators: name: Bell, Cecily
Publisher: name: University Of Tasmania
Year: 2023

description: Fifty kindergarten children were examined in an attempt to compare their educational readiness. There were 19 girls and 31 boys and their average age was 5 1/2 years. Although not strictly controlled, their socio-economic background was considered to be working class. The Boehm Test of Basic Concepts (BTBC) and the Draw-a-Man Test were used. As well, teachers and parents rated the children on the following characteristics: hyperactivity and distractibility, articulated speech, auditory perception,. visual motor co-ordination, laterality, behaviour considered normal, behaviour considered apathetic and withdrawn and behaviour considered angry and defiant. The results showed that certain physical, intellectual, emotional and social characteristics considered relevant to early educational success exist in some kindergarten children and not in others. Girls had more of the component skills considered necessary than did boys. They scored significantly higher on the BTBC and were seen by teachers and parents as haying better articulated speech. Boys were rated by teachers as being more apathetic and withdrawn than girls. Although results for other characteristics did not reach statistical_significance, there was a consistent trend in favour of There was a higher incidence of left-handedness in boys And significantly more boys who were neither clearly right- nor left-handed. The articulated speech of right-handed boys was seen by the teachers as being better than that of the left-handed and. 'undecided' -boys. Children who scored high on the BTBC were more likely to score higher on the Draw-a-Man Test and be considered by the teachers to have more normal behaviour than did low scorers. Conversely, low scorers on the BTBC were more likely to have poor auditory perception and visual motor co-ordination, be more hyperactive (boys only) and apathetic and withdrawn (girls only) than did high scorers. There was no relationship between the BTBC and angry and defiant behaviour for either sex. It was proposed that general intelligence and/or developmental stages accounted for the correlations. The study was confined to group differences and did not analyse the results of individual children. Parent' and teachers' ratings agreed on children who had 'normal' behaviour but not on those who had maladaptive behaviour. When children with either type of extreme behaviour were grouped together, there was agreement. Implications for education regarding the importance of individual differences in readiness for formal school work were discussed.
Remarks on Multi-Dimensional Conformal Mechanics
Creators: name: Burdik, Cestmir
name: Nersessian, Armen
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, Galajinsky, Lechtenfeld and Polovnikov proposed an elegant group-theoretical transformation of the generic conformal-invariant mechanics to the free one. Considering the classical counterpart of this transformation, we relate this transformation with the Weil model of Lobachewsky space.
title: Unchartered territory: Cerebral venous sinus and portal vein thrombosis post-COVID-19 vaccination
Creators: name: Mansour, Honida
Publisher: name: EURORAD
Year: 2021
Subjects: subject: Neuroradiology
subject: Neuroradiology brain
subject: CT
subject: Clinical Cases

description: Clinical History: A 22-year-old male with no previous medical history presented to hospital with right-sided hemiparesis preceded by a four-day history of headache and confusion. He received the ChAdOx1 nCoV-19 vaccination 10 days prior to admission. Blood investigations revealed marked thrombocytopenia (platelets 22 x109/L) and elevated D-Dimer (11624 ng/ml).

description: 22 years, male
Analysis on a Fractal Set
Creators: name: Raut, Santanu
name: Datta, Dhurjati Prasad
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 26E30, 26E35, 28A28

description: The formulation of a new analysis on a zero measure Cantor set $C (\subset I=[0,1])$ is presented. A non-archimedean absolute value is introduced in $C$ exploiting the concept of {\em relative} infinitesimals and a scale invariant ultrametric valuation of the form $\log_{\varepsilon^{-1}} (\varepsilon/x) $ for a given scale $\varepsilon>0$ and infinitesimals $0
description: AMS-Latex 2e, 13 pages, no figures
Switched-capacitor filter design
Creators: name: Alauddin, AM
Publisher: name: University Of Tasmania
Year: 2023

description: The switched-capacitor (SC) technique is a very attractive method for implementing fully integrated filters in MOS technology.. The filters, consisting only of switches, capacitors and operational amplifiers, can be realised through a nutter of design procedures. This thesis describes these design techniques and their applications. Many of the suitable designs use SC integrators which can be easily derived from the analogue active integrators. Parasitic-insensitive implementation is possible realising either the lossless discrete integrator (Lza) or the bilinear transformation. The effects of noise and other non-idealities of the switches and operational amplifiers on these integrators are described. A general biquadratic structure based on the SC integrators is given from which a circuit capable of realising bandpass transfer functions is derived. The SC biquads are cascaded or coupled for the design of higher order filters. Higher order SC filters are also designed by simulating doublyterminated 'LC ladder networks with integrators using the LDI transformation. Other methods of simulating the ladder network include using voltage-controlled current sources, the impedance simulation method and voltage inverter switches. These methods mostly produce circuits which are sensitive to parasitic capacitances and are only briefly described. These design techniques are used to design SC filters which meet the one-third octave bandpeds filter specification required for the analysis of acoustic noiii and vibration. The midband frequencies of the resulting SC bandpass filters can be varied from 10Hz to 20kHz. The designs are made using clock frequency at a minimum value possible and another at 48 times the midband frequency. The suitable circuits are compared with regard to their requirements and performances. The antialiasing problem due to the wide range of required midband frequencies is overcome with the use of an SC decimator circuit. This allows the antialiasing filter, the decimator and other accessories to be implemented on 4 single Chip with the SC bandpass filter. The SC circuits are analysed using their z-transform relations. The nodal analysis technique and the equivalent circuit method are described and used for deriving z-transform transfer functions of the SC filters. These are then used to predict the frequency responses of the filters and their sensitivity as to variation of one single capacitor value.
The role of torsional Alfven waves in coronal heating
Creators: name: Antolin, P.
name: Shibata, K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In the context of coronal heating, among the zoo of MHD waves that exist in the solar atmosphere, Alfven waves receive special attention. Indeed, these waves constitute an attractive heating agent due to their ability to carry over the many different layers of the solar atmosphere sufficient energy to heat and maintain a corona. However, due to their incompressible nature these waves need a mechanism such as mode conversion (leading to shock heating), phase mixing, resonant absorption or turbulent cascade in order to heat the plasma. New observations with polarimetric, spectroscopic and imaging instruments such as those on board of the japanese satellite Hinode, or the SST or CoMP, are bringing strong evidence for the existence of energetic Alfven waves in the solar corona. In order to assess the role of Alfven waves in coronal heating, in this work we model a magnetic flux tube being subject to Alfven wave heating through the mode conversion mechanism. Using a 1.5-dimensional MHD code we carry out a parameter survey varying the magnetic flux tube geometry (length and expansion), the photospheric magnetic field, the photospheric velocity amplitudes and the nature of the waves (monochromatic or white noise spectrum). It is found that independently of the photospheric wave amplitude and magnetic field a corona can be produced and maintained only for long (> 80 Mm) and thick (area ratio between photosphere and corona > 500) loops. Above a critical value of the photospheric velocity amplitude (generally a few km/s) the corona can no longer be maintained over extended periods of time and collapses due to the large momentum of the waves. These results establish several constraints on Alfven wave heating as a coronal heating mechanism, especially for active region loops.
description: 39 pages, 8 figures; http://stacks.iop.org/0004-637X/712/494
title: ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð·ÑÑÐ´Ð½Ð¾Ð¹ ÐºÐ°Ð¼ÐµÑÑ Ð¼ÑÐ»ÑÑÐ¸ÐºÐ°Ð¼ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ°Ð·ÑÑÐ´Ð½Ð¸ÐºÐ° Ð½Ð° ÐºÐ»Ð°ÑÑ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ 6, 10 ÐºÐ
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÐ¸Ð½ÑÐ°Ð¹ÑÐ¾Ð², ÐÑÑÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2016
Subjects: Ð Ð°Ð·ÑÑÐ´Ð½Ð¸ÐºÐ¸
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multi-chamber arrester
multi-chamber system
quenching of the follow current
quenching of the overvoltage impulse

description: ÐÐ¾ Ð²Ð²ÐµÐ´ÐµÐ½Ð¸Ð¸ Ð¾ÑÑÐ°Ð¶ÐµÐ½Ð° Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾ÑÑÑ Ð·Ð°Ð´Ð°ÑÐ¸ Ð¸ Ð¾Ð¿Ð¸ÑÐ°Ð½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐµÐ»Ð¸ ÑÐ°Ð±Ð¾ÑÑ. Ð Ð¿ÐµÑÐ²Ð¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð¾Ð±Ð·Ð¾Ñ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ ÑÐ°Ð·ÑÑÐ´Ð½Ð¸ÐºÐ¾Ð². ÐÑÐ¾ÑÐ°Ñ Ð³Ð»Ð°Ð²Ð° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¾ÑÐµÐ½Ð¾ÑÐ½ÑÐ¼ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÐ¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ÑÐ¿ÑÑÐ°ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÐµÐ½Ð´Ð° Ð² ÑÑÐµÐ´Ðµ MATLAB Simulink. Ð ÑÑÐµÑÑÐµÐ¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ° Ð´ÑÐ³Ð¾Ð³Ð°ÑÐµÐ½Ð¸Ñ Ð² ÑÐ°Ð·ÑÑÐ´Ð½Ð¾Ð¹ ÐºÐ°Ð¼ÐµÑÐµ Ð¼ÑÐ»ÑÑÐ¸ÐºÐ°Ð¼ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ°Ð·ÑÑÐ´Ð½Ð¸ÐºÐ° Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ðµ Ansys Fluent. Ð§ÐµÑÐ²ÐµÑÑÐ°Ñ Ð³Ð»Ð°Ð²Ð° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐ¸ ÑÐ°Ð±Ð¾ÑÐµ Ð½Ð° Ð¾Ð¿Ð¾ÑÐ°Ñ Ð²Ð¾Ð·Ð´ÑÑÐ½ÑÑ Ð»Ð¸Ð½Ð¸Ð¹. Ð Ð¿ÑÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ð¾ ÑÐµÑÐ½Ð¸ÐºÐ¾-ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÐ»ÐµÑÐ¾Ð¾Ð±ÑÐ°Ð·Ð½Ð¾ÑÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¼ÑÐ»ÑÑÐ¸ÐºÐ°Ð¼ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ°Ð·ÑÑÐ´Ð½Ð¸ÐºÐ°. ÐÐ°ÐºÐ»ÑÑÐµÐ½Ð¸Ðµ Ð²ÐºÐ»ÑÑÐ°ÐµÑ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð²ÑÐ²Ð¾Ð´Ñ Ð¿Ð¾ ÑÐ°Ð±Ð¾ÑÐµ.
description: The introduction reflects the urgency of the problem and describes the main purpose of the work. The first chapter introduces a review of existing arresters models. The second chapter is devoted to the evaluation experimental studies, as well as the simulation of the testing stand's work in MATLAB Simulink. The third chapter presents the results of the modeling of the arc quenching process in the discharge chamber of multi-chamber arrester in the Ansys Fluent application. The fourth chapter is devoted to the safety when working on overhead line supports. The fifth chapter provides us with the calculations of the economic benefits of developing multi-chamber arrester. Conclusion contains the main conclusions of the work.
Frobenius map on local Calabi-Yau manifolds
Creators: name: Shapiro, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove results that, for a certain class of non-compact Calabi-Yau threefolds, relate the Frobenius action on their $p$-adic cohomology to the Frobenius action on the $p$-adic cohomology of the corresponding curves. In the appendix, we describe our interpretation of the Griffiths-Dwork method.
description: 14 pages
Kinematic reconstruction of atmospheric neutrino events in a large water Cherenkov detector with proton identification
Creators: name: Kamiokande Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report the development of a proton identification method for the Super-Kamiokande detector. This new tool is applied to the search for events with a single proton track, a high purity neutral current sample of interest for sterile neutrino searches. After selection using a neural network, we observe 38 events in the combined SK-I and SK-II data corresponding to 2285.1 days of exposure, with an estimated signal to background ratio of 1.6 to 1. Proton identification was also applied to a direct search for charged-current quasi-elastic (CCQE) events, obtaining a high precision sample of fully kinematically reconstructed atmospheric neutrinos, which has not been previously reported in water Cherenkov detectors. The CCQE fraction of this sample is 55%, and its neutrino (as opposed to anti-neutrino) fraction is 91.7+/-3%. We selected 78 mu-like and 47 e-like events in the SK-I and SK-II data set. With this data, a clear zenith angle distortion of the neutrino direction itself is reported in a sub-GeV sample of muon neutrinos where the lepton angular correlation to the incoming neutrino is weak. Our fit to nu_mu->nu_tau oscillations using the neutrino L/E distribution of the CCQE sample alone yields a wide acceptance region compatible with our previous results and excludes the no-oscillation hypothesis at 3 sigma.
description: 23 pages, 22 figures. Corrected typos, replaced some figures. Version accepted for publication in Phys. Rev. D
Theory versus experiment for vacuum Rabi oscillations in lossy cavities (II): Direct test of uniqueness of vacuum
Creators: name: Wilczewski, Marcin
name: Czachor, Marek
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The paper continues the analysis of vacuum Rabi oscillations we started in Part I [Phys. Rev. A {\bf 79}, 033836 (2009)]. Here we concentrate on experimental consequences for cavity QED of two different classes of representations of harmonic oscillator Lie algebras. The zero-temperature master equation, derived in Part I for irreducible representations of the algebra, is reformulated in a reducible representation that models electromagnetic fields by a gas of harmonic oscillator wave packets. The representation is known to introduce automatic regularizations that in irreducible representations would have to be justified by ad hoc arguments. Predictions based on this representation are characterized in thermodynamic limit by a single parameter $ς$, responsible for collapses and revivals of Rabi oscillations in exact vacuum. Collapses and revivals disappear in the limit $ς\to\infty$. Observation of a finite $ς$ would mean that cavity quantum fields are described by a non-Wightmanian theory, where vacuum states are zero-temperature Bose-Einstein condensates of a finite-particle bosonic oscillator gas and, thus, are non-unique. The data collected in the experiment of Brune {\it et al.} [Phys. Rev. Lett. {\bf{76}}, 1800 (1996)] are consistent with any $ς>400$.
description: Sequel to PRA 79, 033836 (2009) [arXiv:0811.3177]
Diffusive Corrections to Pn Approximations
Creators: name: Schaefer, Matthias
name: Frank, Martin
name: Levermore, C. David
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate moment methods from a general point of view using an operator notation. This theoretical approach lets us explore the moment closure problem in more detail. This gives rise to a new idea, proposed in [Levermore2005, Levermore2009], of how to improve the well-known Pn approximations. We systematically develop a diffusive correction to the Pn equations from the operator formulation - the so-called Dn approximation. We validate the new approach with numerical examples in one and two dimensions.
description: 22 pages, 4 figures
МЕТAПРЕДМЕТНОЕ ОБУЧЕНИЕ РУССКОМУ ЯЗЫКУ
Creators: name: Курбaновa, Гулибону
Publisher: name: Zenodo
Year: 2023

description: Нa урокaх русского языкa в условиях огрaниченной среды вaжно оргaнизовaть рaзнообрaзную прaктическую деятельность школьников (познaвaтельную, трудовую, художественную и пр.). Это дaст возможность творческого применения знaний и зaложит прочные нaвыки сaмообрaзовaния. Стaрший этaп обучения хaрaктеризуется:
Relevant energy scale in hybrid mesoscopic Josephson junctions
Creators: name: Carillo, Franco
name: Born, Detlef
name: Pellegrini, Vittorio
name: Tafuri, Francesco
name: Biasiol, Giorgio
name: Sorba, Lucia
name: Beltram, Fabio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Transport properties of high quality Nb/semiconductor/Nb long Josephson junctions based on metamorphic In_0.75Ga_0.25As epitaxial layers are reported. Different junction geometries and fabrication procedures are presented that allow a systematic comparison with quasiclassical theory predictions. The impact of junction transparency is highlighted and a procedure capable of yielding a high junction quality factor is identified.
description: 11 pages, 3 figures
Spectrum Generating Conformal and Quasiconformal U-Duality Groups, Supergravity and Spherical Vectors
Creators: name: Gunaydin, Murat
name: Pavlyk, Oleksandr
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: After reviewing the algebraic structures that underlie the geometries of N=2 Maxwell-Einstein supergravity theories (MESGT) in five and four dimensions with symmetric scalar manifolds, we give a unified realization of their three dimensional U-duality groups as spectrum generating quasiconformal groups. They are F_{4(4)}, E_{6(2)}, E_{7(-5)}, E_{8(-24)} and SO(n+2,4). Our formulation is covariant with respect to U-duality symmetry groups of corresponding five dimensional supergravity theories, which are SL(3,R), SL(3,C), SU*(6), E_{6(6)} and SO(n-1,1)X SO(1,1), respectively. We determine the spherical vectors of quasiconformal realizations of all these groups twisted by a unitary character. We also give their quadratic Casimir operators and determine their values. Our work lays the algebraic groundwork for constructing the unitary representations of these groups induced by their geometric quasiconformal actions, which include the quaternionic discrete series. For rank 2 cases, SU(2,1) and G_{2(2)}, corresponding to simple N=2 supergravity in four and five dimensions, this program was carried out in arXiv:0707.1669. We also discuss the corresponding algebraic structures underlying symmetries of matter coupled N=4 and N>4 supergravity theories. They lead to quasiconformal realizations of split real forms of U-duality groups as a straightforward extension of the quaternionic real forms.
description: Section 4 is split with the addition of a subsection on quadratic Casimir operators; references added; typos corrected. Latex file; 53 pages
Search for D0 to p e- and D0 to pbar e+
Creators: name: C Collaboration
name: Rubin, P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using data recorded by CLEO-c detector at CESR, we search for simultaneous baryon and lepton number violating decays of the D^0 meson, specifically, D^0 --> p-bar e^+, D^0-bar --> p-bar e^+, D^0 --> p e^- and D^0-bar --> p e^-. We set the following branching fraction upper limits: D^0 --> p-bar e^+ (D^0-bar --> p-bar e^+) < 1.1 *10^{-5} and D^0 --> p e^- (D^0-bar --> p e^-) < 1.2 * 10^{-5}, both at 90% confidence level.
description: 10 pages, available through http://www.lns.cornell.edu/public/CLNS/, submitted to PRD. Comments: changed abstract, added reference for section 1, vertical axis in Fig.5 changed (starts from 1.5 rather than 2.0), fixed typos
Aspects of European influences on violin playing and teaching in Australia
Creators: name: Borer, Philippe
Publisher: name: University Of Tasmania
Year: 2023

description: Australia has not only a highly interesting - and surprisingly rich - violinistic past, but has recently succeeded in gaining an enviable position in the field of instrumental pedagogy and performance. Australian artists and musicians play an important part in cultural life, both in their own country and on the international scene. The present dissertation, which has involved a wide-ranging investigation from private sources as well as teaching and performing organisations, aims at defining the essential factors which have contributed to the formation and development of what may be called the Australian school of violin playing and teaching. Starting from a general and historical standpoint, the research moves towards more specific aspects including concrete data derived from personal experience. Chapter I investigates the historical background of violin playing and defines the sources from which the overseas schools have evolved. From the formation of the early schools of Corelli and Tartini in Italy, this research brings to light the remarkable continuity of the violinistic tradition down to the present time. Teacher-pupil genealogical studies demonstrate the possibility of tracing unbroken lines leading from Corelli and Tartini through Viotti and his disciples, to the present-day Australian violinists. Chapter II constitutes an attempt at a systematic comparative study of the great European schools of violin playing and of their Australian ramifications. The procedure adopted consists of a detailed examination of individual schools, first by presenting an outline of their history, key representatives, methodology and other characteristics. This is followed by the identification of the links gradually appearing in Australia and finally established at the present time. Finally, Chapters III and IV focus on two noted Australian violinists and pedagogues and investigate the varying as well as the common background of their early instrumental training. This study offers the possibility of considering different elements in the European tradition which are reflected in their highly individualized approach to playing and teaching. One can find here some of their many original ideas and striking pedagogical concepts.
La fucilazione di don Giuseppe Morosini: cronaca, storia, finzione
Creators: name: Pini, Benedetta
Publisher: name: Schermi. Storie e culture del cinema e dei media in Italia
Year: 2020

description: The article presents a mapping of the countless different discourses concerning don Giuseppe Morosini’s death, which is represented in the final shot of "Roma città aperta" (“Rome, Open City”) (Rossellini, 1945). The execution of Morosini, which took place on 3th April 1944 at Forte Bravetta, is located in a historical-political context that is highly problematic. Starting from a systematic research, the article compares all the testimonies and representations of the episode in order to highlight the link between the medium used, the historical context and the political-ideological interests of the period. The essay examines the relationship between chronicle, history and fiction in the representation of the priest’s death, leading us to reflect on the mechanisms and the reasons underlying the elaboration of the episode.
description: Schermi. Storie e culture del cinema e dei media in Italia, V. 4 N. 7 (2020)
On the interplay between flaring and shadowing in disks around Herbig Ae/Be stars
Creators: name: Acke, B.
name: Min, M.
name: Ancker, M. van den
name: Bouwman, J.
name: Ochsendorf, B.
name: Juhasz, A.
name: Waters, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Based on the SED, Herbig stars have been categorized into two observational groups, reflecting their overall disk structure: group I members have disks with a higher degree of flaring than their group II counterparts. We investigate the 5-35 um Spitzer IRS spectra of a sample of 13 group I sources and 20 group II sources. We focus on the continuum emission to study the underlying disk geometry. We have determined the [30/13.5] and [13.5/7] continuum flux ratios. The 7-um flux excess with respect to the stellar photosphere is measured, as a marker for the strength of the near-IR emission produced by the inner disk. We have compared our data to self-consistent passive-disk model spectra, for which the same quantities were derived. We confirm the literature result that the difference in continuum emission between group I and II sources can largely be explained by a different amount of small dust grains. However, we report a strong correlation between the [30/13.5] and [13.5/7] flux ratios for Meeus group II sources. Moreover, the [30/13.5] flux ratio decreases with increasing 7-um excess for all targets in the sample. To explain these correlations with the models, we need to introduce an artificial scaling factor for the inner disk height. In roughly 50% of the Herbig Ae/Be stars in our sample, the inner disk must be inflated by a factor 2 to 3 beyond what hydrostatic calculations predict. The total disk mass in small dust grains determines the degree of flaring. We conclude, however, that for any given disk mass in small dust grains, the shadowing of the outer (tens of AU) disk is determined by the scale height of the inner disk (1 AU). The inner disk partially obscures the outer disk, reducing the disk surface temperature. Here, for the first time, we prove these effects observationally.
description: 4 pages, 3 figures, accepted by A&A
Manuscript with highlighted changes from Social factors and the neurobiology of pathogen avoidance
Creators: name: Kavaliers, Martin
name: Ossenkopp, Klaus-Peter
name: Tyson, Cashmeira-Dove
name: Bishnoi, Indra R.
name: Choleris, Elena
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Neuroscience
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour

description: Although the evolutionary causes and consequences of pathogen avoidance have been gaining increasing interest, there has been less attention paid to the proximate neurobiological mechanisms. Animals gauge the infection status of conspecifics and the threat they represent on the basis of various sensory and social cues. Here, we consider the neurobiology of pathogen detection and avoidance from a cognitive, motivational and affective state (disgust) perspective focusing on the mechanisms associated with activating and directing parasite/pathogen avoidance. Drawing upon studies with laboratory rodents, we briefly discuss aspects of (i) olfactory-mediated recognition and avoidance of infected conspecifics; (ii) relationships between pathogen avoidance and various social factors (e.g. social vigilance, social distancing (approach/avoidance), social salience and social reward); (iii) the roles of various brain regions (in particular the amygdala and insular cortex) and neuromodulators (neurotransmitters, neuropeptides, steroidal hormones and immune components) in the regulation of pathogen avoidance. We propose that understanding the proximate neurobiological mechanisms can provide insights into the ecological and evolutionary consequences of the non-consumptive effects of pathogens and how, when and why females and males engage in pathogen avoidance.