cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Traditional fuels and cooking stoves in developing countries: a technical, social and environmental assessment
Creators: name: Gill, Jasvinder Singh
Publisher: name: The Open University
Year: 1985

description: Population pressure in developing countries is believed to be the predominant cause of deforestation, due to the dual needs of food and fuel. This has led to a shortage of firewood (for cooking) and affects especially the rural poor of these countries. One intervention strategy to reduce firewood consumption has been to design, develop and disseminate "improved" (ie fuel efficient) cooking stoves for use in the rural sector. These stove programmes have failed to achieve widespread dissemination of "improved" stoves. One reason is the mismatch between the felt needs and problems of the rural poor and the assumptions of institutions and individuals designing and promoting these stoves. Moreover, traditional stoves and fireplaces are not inherently inefficient for cooking. Not all "improved" stoves have been more efficient than traditional designs in practice. Traditional modes of cooking serve a number of sociocultural and practical functions which have been neglected in stove programmes to date. Stove users in a number of developing countries appear to be more concerned about speedy cooking whilst stove programmes overemphasize fuel savings. Villagers in Zimbabwe appear to have spontaneously transferred to stoves which consume significantly more fuel than their traditional fireplace. However, this lack of fuel economy is offset by the benefits of faster cooking, greater space heat, more stable pots and a modern "image". The higher firewood collection costs are affordable as this takes place in the agriculturally slack season. Deforestation is a complex issue to which there are a number of contributary factors. In Zimbabwe, the processes of land degradation, deforestation, and the ensuing shortage of firewood were set in motion as early as the 1890’s when the African population residing on the fertile highlands was forcibly evicted onto marginal land by European settlers. Strategies to cope with deforestation in Zimbabwe would be aided by user participation in defining needs and problems within the wider framework of land tenure, agroforestry schemes and inputs to increase the productivity of African areas.
The effect of environmental cues on sorting behaviour
Creators: name: Cohen, Bailee
name: Hockley, Sarah
name: Tims, Brandon
Publisher: name: The University of British Columbia
Year: 2016

description: This report outlines the research experiment conducted by three psychology students from the University of British Columbia and their findings on environmental cues and the effects they pose towards sorting behaviours. The study was sanctioned by the Zero Waste Project at UBC and was designed to answer the following questions—How is sorting behaviour impacted by having stand-alone garbage cans inside, or just outside, large auditoriums? And is there a benefit to having a poster where the garbage was asking people to recycle? The research was conducted using a 2 x 2 between-subjects factorial design, participants were randomly assigned to one of four conditions; each consisting of a different combination of environmental cues. Sorting behaviour was operationalized by the participants disposal of the experiment’s designated material, as collected in the Sort it Out bin. The research findings indicate certain benefits to having environmentally prompting cues in place of garbage cans in auditoriums, as supported by the data collected on sorting behaviours of the participants. Further studies need be conducted before determining conclusive results; until then the Zero Waste Project will continue to promote environmentally sustainable initiatives to reach UBC’s greener goals. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
PRESCHOOLERS' EXPECTANCY PREDICTIONS AND PERFORMANCE EVALUATIONS ON MOTOR TASKS (SELF-EFFICACY, SEX DIFFERENCES)
Creators: name: Lanman, Mary Hakes
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology
classificationCode: 5201
subject: Applied and developmental psychology

description: This study investigated age and gender differences in preschool age children's expectancy predictions and post-task evaluations of self, same age and gender peers, and opposite sex peers on four motor tasks. Additional questions investigated the effect of making a prediction, and how post-task evaluations were reflected in performance. It was hypothesized that gender differences in expectancy and self-evaluation seen in older children begin between the ages of 4 and 5. The effect of making a prediction was not expected to influence preschoolers' performance. The study employed a 2 x 2 x 2 design using ages 4 to 4.5 and 5 to 5.5 boys and girls, and predictor versus non-predictor conditions. Subjects were 96 children from area preschools. In the predictor condition, subjects were asked to make pre-performance expectancy predictions of their own and same sex and opposite sex peers' performance. Non-predictor subjects performed tasks without having to make predictions. Dependent measures included level of prediction (in the predictor groups), time spent on tasks, number of attempts, number of successes, and level of post-task evaluation of self plus same and opposite sex peers. Results confirmed that there are gender and age based differences in performance expectancy on motor tasks. Four year olds had higher expectations than 5 year olds, and boys had higher expectations than girls. Boys felt girls would do less well than other boys, and girls felt boys would do better than other girls. The differences, however, were not reflected in performance behavior. Making a prediction and age factors, not gender, were related to persistence and success. Girls' performance and self-evaluation were diminished by making a prediction regardless of their actual performance, whereas boys' performance and post-task evaluations more accurately reflected their actual competencies. Conclusions from the study are that gender based differences in attitudes regarding personal competency begin prior to school age, and are present developmentally before being manifested in behavior. Additionally, the solicitation of expectancy statements was shown to be a powerful manipulation which heightened the evaluative components of performance and debilitated girls' more than boys' performance. The importance of further study of the gender differences in evaluative attitudes as well as the distinction between learning and performance goals for boys and girls was emphasized.
Constraints on perfect fluid and scalar field dark energy models from future redshift surveys
Creators: name: Amendola, Luca
name: Quercellini, Claudia
name: Giallongo, Emanuele
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the constraints that future photometric and spectroscopic redshift surveys can put on dark energy through the baryon oscillations of the power spectrum. We model the dark energy either with a perfect fluid or a scalar field and take into account the information contained in the linear growth function. We show that the growth function helps to break the degeneracy in the dark energy parameters and reduce the errors on $w_0,w_1$ roughly by 30% making more appealing multicolor surveys based on photometric redshifts. We find that a 200 square degrees spectroscopic survey reaching $z = 3$ can constrain $w_0,w_1$ to within $Δw_0=0.21,Δw_1=0.26$ and to $Δw_0=0.39,Δw_1=0.54$ using photometric redshifts with absolute uncertainty of 0.02. In the scalar field case we show that the slope $n$ of the inverse power-law potential for dark energy can be constrained to $Δn=0.26$ (spectroscopic redshifts) or $Δn=0.40$ (photometric redshifts), i.e. better than with future ground-based supernovae surveys or CMB data.
description: 27 pages, submitted to MNRAS
THE EFFECTIVENESS OF PUBLIC AND PRIVATE ORGANIZATIONS: THE CASE OF MALAYSIA'S STOCK EXCHANGE COMPANIES
Creators: name: Abbas, Fadil Azim
Publisher: name: American University
Year: 2023

description: The aim of the study is to identify the effect of the pursuit of social objectives on the profit of companies. To do this, the quasi-experimental approach is adopted, i.e., matching comparison groups on as many variables as possible except for the pursuit of social objectives. Assuming success in doing this, then the difference in profit between them can be attributed to the pursuit/non-pursuit of social objectives. The matching procedure produced a group of 95 government-owned companies and another of 90 privately-owned companies, all of which were listed on the Kuala Lumpur Stock Exchange and competed for business and profit in Malaysia in the 1979-83 period. They were all subjected to the same regulations and incentives instituted by the government. The government-owned companies differed from the privately-owned ones in that they pursued social objectives. The two groups were compared at the macro and sectoral levels using three measures of profit, viz., Profit Before Tax (PBT), Adjusted Gross Earnings Per Share (EPS) and Return on Shareholders' Fund (RSF). The results of the macro comparison show that on PBT, the mean of government companies are considerably higher than that of private ones whilst on the standardized EPS and RSF measures, the means of government companies are only slightly higher than that of the private companies. Further, the results of the comparisons within 14 different sectors in which the 195 government and private companies compete, show that the means of the former on PBT, EPS and RSF are higher than the latter in more sectors. The results indicate that the pursuit of social objectives by government companies does affect profit but only minimally and in certain economic sectors only.
Shoulder electromyography-based indicators to assess manifestation of muscle fatigue during laboratory-simulated manual handling task
Creators: name: Goubault, Etienne
name: Martinez, Romain
name: Bouffard, Jason
name: Dowling-Medley, Jennifer
name: Begon, Mickaël
name: Dal Maso, Fabien
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Muscle fatigue is a risk factor for developing shoulder musculoskeletal disorders. The aim of this study was to identify shoulder electromyographic indicators that are most indicative of muscle fatigue during a laboratory simulated manual handling task. Thirty-two participants were equipped with electromyographic electrodes on 10 shoulder muscles and moved boxes for 45-minutes. The modified rate of perceived exertion (mRPE) was assessed every 5-minutes and multivariate linear regressions were performed between myoelectric manifestation of fatigue (MMF) and the mRPE scores. During a manual handling task representative of industry working conditions, spectral entropy, median frequency, and mobility were the electromyographic indicators that explained the largest percentage of the mRPE. Overall, the deltoids, biceps and upper trapezius were the muscles that most often showed significant changes over time in their electromyographic indicators. The combination of these three indicators may improve the accuracy for the assessment of MMF during manual handling. Practitioner Summary: To date, muscle fatigue has primarily been assessed during tasks done to exhaustion, which are not representative of typical working conditions. During a manual handling task representative of industry working conditions, EMG-derived spectral entropy, and median frequency, both extracted from time-frequency analysis, and mobility extracted from time domain, were the best indicators of the manifestation of muscle fatigue.
The Hellas2XMM survey: III. Multiwavelength observations of hard X-ray selected sources in the PKS 0312-77 field
Creators: name: Brusa, M.
name: Comastri, A.
name: Mignoli, M.
name: Fiore, F.
name: Ciliegi, P.
name: Vignali, C.
name: Severgnini, P.
name: Cocchia, F.
name: La Franca, F.
name: Matt, G.
name: Perola, G. C.
name: Maiolino, R.
name: Baldi, A.
name: Molendi, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present extensive optical, radio and infrared follow-up observations of a sample of 35 hard X-ray (2-10 keV) selected sources discovered serendipitously in the PV XMM-Newton observation of the radio-loud quasar PKS 0312-77 field, for which also an archival Chandra observation is available. The observations have been carried out as part of the HELLAS2XMM survey, a program aimed to understand the nature of the sources responsible for the bulk of the hard X-ray Background (XRB). The identification of the optical counterparts greatly benefits from the positional accuracy obtained from Chandra and radio observations. As a consequence, the spectroscopic completeness of the present sample (80%) is limited only by the faintness of the optical counterparts. The multiwavelength coverage of our survey allows us to unveil a large spread in the overall properties of hard X-ray selected sources. At low redshift (z<1), the source breakdown includes Broad Line AGN, Narrow Emission-Line Galaxies, and optically ``normal'' galaxies. All the ten sources at z>1 are spectroscopically classified as Broad Line AGNs. A few of them show significant intrinsic X-ray absorption (N(H)>10^22 cm^-2), further supporting previous evidence of a decoupling between optical and X-ray properties at high luminosities and redshifts. Finally, a non negligible fraction (15%) of the hard X-ray sources are not detected down to the limiting magnitude of the optical images. The corresponding high X-ray to optical flux ratio, X-ray and optical-infrared colors strongly suggest that they are high redshift, obscured AGN.
description: 16 pages, 10 figures, accepted for publication in Astronomy & Astrophysics (aa.cls included)
Relaxation and vibrational properties in metal alloys and other disordered systems
Creators: name: Zaccone, Alessio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The relaxation dynamics and the vibrational spectra of amorphous solids, such as metal alloys, have been intensely investigated as well separated topics in the past. The aim of this review is to summarize recent results in both these areas in an attempt to establish, or unveil, deeper connections between the two phenomena of relaxation and vibration. Theoretical progress in the area of slow relaxation dynamics of liquid and glassy systems and in the area of vibrational spectra of glasses and liquids is reviewed. After laying down a generic modelling framework to connect vibration and relaxation, the physics of metal alloys is considered where the emergence of power-law exponents has been identified both in the vibrational density of states (VDOS) as well as in density correlations. Also, theoretical frameworks which connect the VDOS to the relaxation behaviour and mechanical viscoelastic response in metallic glasses are reviewed. The same generic interpretative framework is then applied to the case of molecular glass formers where the emergence of stretched-exponential relaxation in dielectric relaxation can be put in quantitative relation with the VDOS by means of memory-function approaches. Further connections between relaxation and vibration are provided by the study of phonon linewidths in liquids and glasses, where a natural starting point is given by hydrodynamic theories. Finally, an agenda of outstanding issues including the appearance of compressed exponential relaxation in the intermediate scattering function of experimental and simulated systems (metal alloys, colloidal gels, jammed packings) is presented in light of available (or yet to be developed) mathematical models, and compared to non-exponential behaviour measured with macroscopic means such as mechanical spectroscopy/rheology.
description: Topical review
THE EFFECTIVENESS OF PUBLIC AND PRIVATE ORGANIZATIONS: THE CASE OF MALAYSIA'S STOCK EXCHANGE COMPANIES
Creators: name: Abbas, Fadil Azim
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4407
subject: Policy and administration

description: The aim of the study is to identify the effect of the pursuit of social objectives on the profit of companies. To do this, the quasi-experimental approach is adopted, i.e., matching comparison groups on as many variables as possible except for the pursuit of social objectives. Assuming success in doing this, then the difference in profit between them can be attributed to the pursuit/non-pursuit of social objectives. The matching procedure produced a group of 95 government-owned companies and another of 90 privately-owned companies, all of which were listed on the Kuala Lumpur Stock Exchange and competed for business and profit in Malaysia in the 1979-83 period. They were all subjected to the same regulations and incentives instituted by the government. The government-owned companies differed from the privately-owned ones in that they pursued social objectives. The two groups were compared at the macro and sectoral levels using three measures of profit, viz., Profit Before Tax (PBT), Adjusted Gross Earnings Per Share (EPS) and Return on Shareholders' Fund (RSF). The results of the macro comparison show that on PBT, the mean of government companies are considerably higher than that of private ones whilst on the standardized EPS and RSF measures, the means of government companies are only slightly higher than that of the private companies. Further, the results of the comparisons within 14 different sectors in which the 195 government and private companies compete, show that the means of the former on PBT, EPS and RSF are higher than the latter in more sectors. The results indicate that the pursuit of social objectives by government companies does affect profit but only minimally and in certain economic sectors only.
THE IMPACT OF WORKPLACE PARTICIPATION: A MULTIVARIATE ANALYSIS (WORKER SELF-MANAGEMENT)
Creators: name: Blank, Lorraine R.
Publisher: name: American University
Year: 2023

description: Worker participation in decision making is hypothesized to have behavioral and attitudinal consequences for the participant. The participatory democratic school predicts that workplace participation significantly increases political participation and the attitudes associated with active involvement in politics. The participatory left hypothesizes that workplace participation results in increased support for socialist socio-political orientations and in increased political participation. The humanistic psychology and management schools predict that worker involvement in decision making at their workplaces significantly increases the self-esteem of the participant and her/his satisfaction with the workplace. Utilizing panel data on shareholders in worker owned and operated plywood cooperatives and union members in a traditionally organized plywood factory, this study tests these hypotheses. Cooperative participation is shown to significantly increase communal political participation and involvement in voluntary organizations but is not significantly related to voting, campaign activity, political attitudes, socio-political orientations, satisfaction with the workplace or participant self-esteem. Union participation is not causally related to any of the behaviors or attitudes examined.
title: Towards the assessment of junior children's writing in the creative mode.
Creators: name: Cowley, Daphne
Publisher: name: The Open University
Year: 1985

description: The study charts three different attempts to assess children’s writing for its creativity in language with a view to introducing organization and a greater measure of objectivity into an area of subjective judgement. The preface explains the needs for such procedures, such that they can be used in the classroom for the guidance of teachers and pupils. It also gives reasons for choosing three methods of assessment (i) the semantic differential (Osgood,1957,1968) (ii) focused holistic scoring (Greenhalgh,Townsend,1981) (iii) personal statement (Patton,1980). A review of the literature examines the tradition of literary appreciation, and considers the approaches that have been made towards children’s writing through impression marking, intellectual development, criterion referenced assessment and the development of writing skills. Following a pilot study involving four teachers (Chapter 3) the form of the semantic differential used to assess seven pieces of second year juniors’ writing was used again by thirteen teachers. The rank orders obtained showed a large measure of agreement but did not demonstrate reasons for discernment in detail. Focused holistic scoring, which involves the description of score points which may be allotted to children’s writing by deciding in advance what features may arise and how far they are commendable, was carried out on twelve examples of fourth year juniors’ work by sixteen teachers. This procedure produced a more discerning response which demonstrated the demands of the teachers, which were made explicit in written comments which could be compared with the grading. In the personal statements it was possible to isolate the most common and some individual demands likely to be made by teachers when assessing creative writing. The predominance, in practice, of the conviction that a personal, subjective response to creativity is valid and valuable cannot be ignored in any further attempts to encourage analytical judgement based on standards of excellence.
THE IMPACT OF WORKPLACE PARTICIPATION: A MULTIVARIATE ANALYSIS (WORKER SELF-MANAGEMENT)
Creators: name: Blank, Lorraine R.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Worker participation in decision making is hypothesized to have behavioral and attitudinal consequences for the participant. The participatory democratic school predicts that workplace participation significantly increases political participation and the attitudes associated with active involvement in politics. The participatory left hypothesizes that workplace participation results in increased support for socialist socio-political orientations and in increased political participation. The humanistic psychology and management schools predict that worker involvement in decision making at their workplaces significantly increases the self-esteem of the participant and her/his satisfaction with the workplace. Utilizing panel data on shareholders in worker owned and operated plywood cooperatives and union members in a traditionally organized plywood factory, this study tests these hypotheses. Cooperative participation is shown to significantly increase communal political participation and involvement in voluntary organizations but is not significantly related to voting, campaign activity, political attitudes, socio-political orientations, satisfaction with the workplace or participant self-esteem. Union participation is not causally related to any of the behaviors or attitudes examined.
Some Aspects of Thermal Leptogenesis
Creators: name: Buchmuller, W.
name: Di Bari, P.
name: Plumacher, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Properties of neutrinos may be the origin of the matter-antimatter asymmetry of the universe. In the seesaw model for neutrino masses this leads to important constraints on the properties of light and heavy neutrinos. In particular, an upper bound on the light neutrino masses of 0.1 eV can be derived. We review the present status of thermal leptogenesis with emphasis on the theoretical uncertainties and discuss some implications for lepton and quark mass hierarchies, CP violation and dark matter. We also comment on the `leptogenesis conspiracy', the remarkable fact that neutrino masses may lie in the range where leptogenesis works best.
description: 23 pages, 5 figures, submitted to the Focus on Neutrino Physics issue of the New Journal of Physics, edited by F. Halzen, M. Lindner and A. Suzuki
Thermodynamics of Minimal Coupling Quantum Heat Engines
Creators: name: Łobejko, Marcin
name: Mazurek, Paweł
name: Horodecki, Michał
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The minimal-coupling quantum heat engine is a thermal machine consisting of an explicit energy storage system, heat baths, and a working body, which alternatively couples to subsystems through discrete strokes -- energy-conserving two-body quantum operations. Within this paradigm, we present a general framework of quantum thermodynamics, where a work extraction process is fundamentally limited by a flow of non-passive energy (ergotropy), while energy dissipation is expressed through a flow of passive energy. It turns out that small dimensionality of the working body and a restriction only to two-body operations make the engine fundamentally irreversible. Our main result is finding the optimal efficiency and work production per cycle within the whole class of irreversible minimal-coupling engines composed of three strokes and with the two-level working body, where we take into account all possible quantum correlations between the working body and the battery. One of the key new tools is the introduced "control-marginal state" -- one which acts only on a working body Hilbert space, but encapsulates all features regarding work extraction of the total working body-battery system. In addition, we propose a generalization of the many-stroke engine, and we analyze efficiency vs extracted work trade-offs, as well as work fluctuations after many cycles of the running of the engine.
Tensile Properties of UHMWPE Nanocomposites Reinforced by CNTs and nHA for Acetabular Cup in Hip Joint Replacement
Creators: name: Oleiwi, Jawad K.
Publisher: name: figshare
Year: 2020
Subjects: subject: 90301 Biomaterials
subject: FOS: Medical engineering
subject: 91202 Composite and Hybrid Materials
subject: FOS: Materials engineering
subject: 91299 Materials Engineering not elsewhere classified

description: Ultra high molecular weight polyethylene (UHMWPE) is a semi-crystalline polymer that has been used as a bearing surface in total human joint replacements with some failure for a long time, therefore in this work we attempted to improve tensile properties of UHMWPE polymer by addition of CNTs and nHA with four weight fractions (1, 2, 3 and 5%) to produce nanocomposites. The measured properties included tensile strength, modulus of elasticity and elongation percentage. All the results indicated enhancing the properties especially for UHMWPE /3% CNTs and UHMWPE /5% nHA. FE-SEM examination was done for specimens at the fracture region to identify the structure of nanocomposites that confirm the good cross linking between the matrix and reinforcements.
Az agrár-felsőoktatásban használt tanulmányi információs rendszerek fejlesztési tapasztalatainak nemzetközi hasznosíthatósága
THE POSSIBLE FOREIGN UTILISATION OF THE EXPERIENCES FROM THE DEVELOPMENT OF HUNGARIAN ELECTRONIC HIGHER EDUCATIONAL STUDY ADMINISTRATION SYSTEMS FOCUSING ON AGRICULTURE
Creators: name: Lehőcz, Gábor
name: Lehőcz, Gábor
Publisher: name: Unknown
Year: 2018
Subjects: subject: Labor and Human Capital
subject: Teaching/Communication/Extension/Profession
subject: elektronikus tanulmányi rendszerek
subject: vezetői információs rendszerek
subject: agrár-felsőoktatás
subject: keleti országok
subject: electronic study registrars
subject: management information systems
subject: agricultural higher education
subject: eastern countries

description: Csatlakozva Magda Sándor, Marselek Sándor és Magda Róbert: Az agrárgazdaságban foglalkoztatottak képzettsége és a jövő igénye című vitaíráshoz, magam is komoly kihívásnak és fontos feladatnak tekintem a vidéki agrárképzés megtartását és megerősítését a jövő igényeinek figyelembevételével. Meglátásom szerint ebben rendkívüli szerepet tölthet be a magyar agrár-felsőoktatásban felhalmozott tudás és tapasztalat nemzetköziesítése. Munkám során a nemzetközi tudástranszferben rejlő számos lehetőség közül a fejlett oktatásszervezésre alapozott vezetői döntéstámogató rendszerek kialakulását és azok nemzetközi hasznosíthatóságát vizsgáltam, különös tekintettel az agrár-felsőoktatás specialitásaira. A hazai felsőoktatás elmúlt évtizedben történt átalakulása során az ebben az irányban tett lépések jelentős ismeretet halmoztak fel a szakembereknél, amit rövid és nem reprezentatív kitekintésem alapján a gyorsan fejlődő keleti felsőoktatási térségekben is jó eséllyel lehetne a kapcsolatépítés és -megerősítés egyik eszközeként használni, továbbá piaci alapon kamatoztatni. = Connected to the debate of “Education Levels in the Agricultural Economy and Future Requirements”, published by Magda et al. (2017), I agree with their observation that strengthening of rural agricultural education in Hungary is a serious challenge and an important task in the light of future demands. According to my opinion, the internationalisation of the accumulated knowledge and experience from agricultural higher education in Hungary could also have an important role in this process. In my work I have examined several hidden opportunities of the international knowledge transfer and the international utilisation of the developed study-management based Decision Support Systems, considering also the specialities of agricultural higher education. The steps toward this goal during the transformation of the Hungarian higher education in the last decade accumulated a significant knowledge by the specialists. Based on my non-representative overview, these experiences might be of interest for the dinamicallydeveloping and strengthening higher education in the Eastern Hungarian region, and could be utilised to build and strengthen connections in Eastern Hungary and used for market profitability.
Generalizing the relativistic quantization condition to include all three-pion isospin channels
Creators: name: Hansen, Maxwell T.
name: Romero-López, Fernando
name: Sharpe, Stephen R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a generalization of the relativistic, finite-volume, three-particle quantization condition for non-identical pions in isosymmetric QCD. The resulting formalism allows one to use discrete finite-volume energies, determined using lattice QCD, to constrain scattering amplitudes for all possible values of two- and three-pion isospin. As for the case of identical pions considered previously, the result splits into two steps: The first defines a non-perturbative function with roots equal to the allowed energies, $E_n(L)$, in a given cubic volume with side-length $L$. This function depends on an intermediate three-body quantity, denoted $\mathcal{K}_{\mathrm{df},3}$, which can thus be constrained from lattice QCD input. The second step is a set of integral equations relating $\mathcal{K}_{\mathrm{df},3}$ to the physical scattering amplitude, $\mathcal M_3$. Both of the key relations, $E_n(L) \leftrightarrow \mathcal{K}_{\mathrm{df},3}$ and $\mathcal{K}_{\mathrm{df},3}\leftrightarrow \mathcal M_3$, are shown to be block-diagonal in the basis of definite three-pion isospin, $I_{πππ}$, so that one in fact recovers four independent relations, corresponding to $I_{πππ}=0,1,2,3$. We also provide the generalized threshold expansion of $\mathcal{K}_{\mathrm{df},3}$ for all channels, as well as parameterizations for all three-pion resonances present for $I_{πππ}=0$ and $I_{πππ}=1$. As an example of the utility of the generalized formalism, we present a toy implementation of the quantization condition for $I_{πππ}=0$, focusing on the quantum numbers of the $ω$ and $h_1$ resonances.
description: 46 pages, 4 figures. Updated to match erratum published in JHEP. Main conclusions and results unchanged
title: Ultracryotomy and the corneal stroma
Creators: name: Williams, Leslie Rees
Publisher: name: The Open University
Year: 1984

description: Corneal stroma has two fundamentally interesting properties. Firstly, at physiological values of hydration, it is transparent to visible radiation. Secondly when bathed in aqueous solutions it will take up water and can achieve hydrations many times those of the physiological level with a consequent loss of transparency. These two important properties are intimately linked with two other features of corneal stroma. These are the lamellae of collagen fibrils of uniform diameter which make up the greater part of the stroma and the presence within the stroma of glycosaminoglycans which at physiological pH are negatively charged. The organisation of the collagen fibrils and their relationship to the glycosaminoglycans are important factors in understanding both the transparency of the tissue and the way in which it swells. The work in this thesis falls into two parts. The first is concerned with the development of a technique for cutting ultrathin frozen sections of unfixed biological tissue for transmission electron microscopy. This technique, termed ultracryotomy, offers an alternative preparatory route for ultrastructural study in the electron microscope and in combination with X-ray microanalysis holds great promise for the identification and quantification of chemical distributions at an ultrastructural level. The second part describes experiments to measure the concentration of negatively charged poly-electrolytes within the stroma. This was done indirectly using a purpose built swelling pressure apparatus and then calculating a value for the charge concentration from a theory linking swelling pressure and charge concentration. As a comparison a direct measure of the charge concentration within the stroma was made using radioisotopes. Exhaustive development was carried out with the technique of ultracryotomy and two fundamental limitations to the technique were established. These being the ultrastructural damage caused by the rapid freezing of the tissue and the artefacts produced when sectioning the frozen material. The results from the swelling pressure apparatus indicated that the value of charge concentration within the stroma was a function of the ionic strength of the stromal bathing medium, r The measures of charge concentration obtain- radioisotopically were considerably larger than those from the swelling pressure apparatus and showed no significant differences between the various bathing media. However there was a significant difference in the charge concentration between rapidly frozen and unfrozen corneal stromas as measured by this radioisotopic technique which suggests that rapid freezing was damaging the chemical integrity of the tissue.
THE POULTRY INDUSTRY AS AN ENDOGENOUS FACTOR IN MEXICAN AGRICULTURAL POLICY: A NEOCLASSICAL APPROACH
Creators: name: Jarvis, Lovell S.
name: Perali, C. Federico
name: Jarvis, Lovell S.
name: Perali, C. Federico
Publisher: name: Unknown
Year: 1990
Subjects: Crop Production/Industries
Demand and Price Analysis
Livestock Production/Industries

description: Rising meat demand in Mexico for chicken is alleged to have increased sorghum production and imports, thereby contributing to lower corn production and higher corn imports and prices. Because corn is consumed by the poor, a food versus feed controversy has emerged in Mexico. We model and empirically analyze this issue
Matching Higher Conserved Charges for Strings and Spins
Creators: name: Arutyunov, G.
name: Staudacher, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate that the recently found agreement between one-loop scaling dimensions of large dimension operators in N=4 gauge theory and energies of spinning strings on AdS_5 x S^5 extends to the eigenvalues of an infinite number of hidden higher commuting charges. This dynamical agreement is of a mathematically highly intricate and non-trivial nature. In particular, on the gauge side the generating function for the commuting charges is obtained by integrable quantum spin chain techniques from the thermodynamic density distribution function of Bethe roots. On the string side the generating function, containing information to arbitrary loop order, is constructed by solving exactly the Backlund equations of the integrable classical string sigma model. Our finding should be an important step towards matching the integrable structures on the string and gauge side of the AdS/CFT correspondence.
description: Latex, 33 pages, v2: new section added (completing the analytic proof that the entire infinite towers of commuting gauge and string charges match); references added
SCORES ON READING, MATHEMATICS AND ENGLISH PLACEMENT TESTS AS PREDICTORS OF FRESHMAN ACADEMIC ACHIEVEMENT AT SELECTED MARYLAND POSTSECONDARY INSTITUTIONS (REGRESSION ANALYSIS, MULTIPLE, COLLEGE, CORRELATION STUDY)
Creators: name: Brooks, Marcellina Marie
Publisher: name: American University
Year: 2023

description: The purpose of this study was to determine the relative influence of six variables (overall high school grade-point average, Scholastic Aptitude Test verbal and mathematics scores, and scores on reading, mathematics and English placement tests) individually and in combination, in predicting the academic achievement of freshmen at selected Maryland postsecondary institutions. Inferences were drawn from the findings of this study regarding the feasibility of using placement test scores as indicators of students' academic achievement. The analysis sample for the study consisted of 1,307 first-time, full-time freshmen who entered one of the five state colleges and universities in Maryland in the fall semester of 1980, 1981, or 1982. The method of research used was ex post facto predicting measurements of academic achievement from students' high school grade-point averages and standardized test scores. Stepwise regression analysis was used to measure six predictor variables against the criterion, first-year college grade-point average. Study findings indicated freshman student academic achievement for the study sample students can be predicted to .42 by using the high school grade-point average, Scholastic Aptitude Test scores and placement test results. These variables correlated positively with first-year college grade-point average. Combination of two or more variables increased the accuracy of predicting college achievement beyond that obtained by any single variable (.32). A prediction equation was determined for each institution and for the five study institutions in aggregate. High school grade-point average was found to be the single most important variable in prediction of first-year college grade-point average for study sample students. The combination of high school grade-point average, Scholastic Aptitude Test-Mathematics score along with Test of Standard Written English score strengthens such prediction by .10 to a total multiple correlation of .42. The Nelson-Denny Reading Test and the California Achievement Test in Mathematics were ineffective predictors of college academic achievement for study sample students at each institution and at the sample institutions in aggregate. Therefore, the investigator questions continued use of these two tests for placement of freshman students in courses at selected postsecondary institutions in Maryland.
dS Spaces and Brane Worlds in Exotic String Theories
Creators: name: Blumenhagen, Ralph
name: Brinkmann, Max
name: Makridou, Andriana
name: Schlechter, Lorenz
name: Traube, Matthias
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate string-phenomenological questions of Hull's exotic superstring theories with Euclidean strings/branes and multiple times. These are known to be plagued by pathologies like the occurrence of ghosts. On the other hand, these theories exhibit de Sitter solutions. Our special focus lies on the question of the coexistence of such de Sitter solutions and ghost-free brane worlds. To this end, the world-sheet CFT description of Euclidean fundamental strings is generalized to include also the open string/D-brane sector. Demanding that in the "observable" gauge theory sector the gauge fields themselves are non-ghosts, a generalization of the dS swampland conjecture is found.
description: 56 pages; v2: new subsection reviewing previous results, further references added
Entropy Fit Indices: New Fit Measures for Assessing the Structure and Dimensionality of Multiple Latent Variables
Creators: name: Golino, Hudson
name: Moulder, Robert
name: Shi, Dingjing
name: Christensen, Alexander P.
name: Garrido, Luis Eduardo
name: Nieto, Maria Dolores
name: Nesselroade, John
name: Sadana, Ritu
name: Thiyagarajan, Jotheeswaran Amuthavalli
name: Boker, Steven M.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Plant Biology

description: The accurate identification of the content and number of latent factors underlying multivariate data is an important endeavor in many areas of Psychology and related fields. Recently, a new dimensionality assessment technique based on network psychometrics was proposed (Exploratory Graph Analysis, EGA), but a measure to check the fit of the dimensionality structure to the data estimated via EGA is still lacking. Although traditional factor-analytic fit measures are widespread, recent research has identified limitations for their effectiveness in categorical variables. Here, we propose three new fit measures (termed entropy fit indices) that combines information theory, quantum information theory and structural analysis: Entropy Fit Index (EFI), EFI with Von Neumman Entropy (EFI.vn) and Total EFI.vn (TEFI.vn). The first can be estimated in complete datasets using Shannon entropy, while EFI.vn and TEFI.vn can be estimated in correlation matrices using quantum information metrics. We show, through several simulations, that TEFI.vn, EFI.vn and EFI are as accurate or more accurate than traditional fit measures when identifying the number of simulated latent factors. However, in conditions where more factors are extracted than the number of factors simulated, only TEFI.vn presents a very high accuracy. In addition, we provide an applied example that demonstrates how the new fit measures can be used with a real-world dataset, using exploratory graph analysis.
A theoretical investigation of ferromagnetic tunnel junctions with 4-valued conductances
Creators: name: Kokado, Satoshi
name: Harigaya, Kikuo
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In considering a novel function in ferromagnetic tunnel junctions consisting of ferromagnet(FM)/barrier/FM junctions, we theoretically investigate multiple valued (or multi-level) cell property, which is in principle realized by sensing conductances of four states recorded with magnetization configurations of two FMs; that is, (up,up), (up,down), (down,up), (down,down). To obtain such 4-valued conductances, we propose FM1/spin-polarized barrier/FM2 junctions, where the FM1 and FM2 are different ferromagnets, and the barrier has spin dependence. The proposed idea is applied to the case of the barrier having localized spins. Assuming that all the localized spins are pinned parallel to magnetization axes of the FM1 and FM2, 4-valued conductances are explicitly obtained for the case of many localized spins. Furthermore, objectives for an ideal spin-polarized barrier are discussed.
description: 9 pages, 3 figures, accepted for publication in J. Phys.: Condens. Matter
Preparation and Characterization of Carbon Nanotubes using Carbon Black by Electrochemical Technique with Anodic Aluminium Oxide
Creators: name: Oleiwi, Jawad K.
Publisher: name: figshare
Year: 2020
Subjects: subject: 91202 Composite and Hybrid Materials
subject: FOS: Materials engineering
subject: 91299 Materials Engineering not elsewhere classified

description: This study describes preparation and characterization of carbon nanotubes (CNTs) by anodic aluminium oxide (AAO) template assisted electrochemical deposition. A highly ordered array of cylindrical designed pores of anodic aluminium oxide was obtained from anodizing aluminum to use it as a template for deposition of carbon nanotubes. The fabrication of carbon nanotubes was done using moraine of micrometer sized carbon black with diameter range of 0.5-75 μm. The characterization of carbon nanotubes was done by FTIR, SEM and AFM indicating the formation of carbon nanotubes within anodic aluminium oxide template by electrodeposition at room temperature. FTIR spectrum indicated the presence of peaks of CHx group associated with O-H, in addition to appear COOH group after functionalization of carbon nanotubes with (HNO3-H2SO4) mixture to obtain functionalized carbon nanotubes (F-CNTs). The SEM morphology confirmed the fabrication of nanotube by appearing opened ends of tubes with nano dimensions. The atomic force microscopy analysis gave smother surface with more average diameters from 66.3 to 77.21 nm for F-CNTs compared with carbon nanotubes due to formation carboxylic groups.
MPEC 2024-B41 : 2024 BQ
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 BQ

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.