cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: MELT RHEOLOGICAL BEHAVIOUR AND MECHANICAL PROPERTIES OF POLY(LACTIC ACID)/HIGH DENSITY POLYETHYLENE BLENDS
Creators: name: Alzarzouri, Fadi
name: Jabra, Rafi
name: Deri, Fawaz
Publisher: name: Peter the Great St. Petersburg Polytechnic University
Year: 2021

description: In this study, poly(lactic acid) was melt blended with high density polyethylene to investigate the rheological and mechanical properties of these blends. The rheological properties were characterized where viscous properties were evaluated in the molten state. In studying the viscous properties, non-Newtonian index (n), apparent viscosity, and the flow activation energy were determined. Mechanical properties were studied in terms of tensile properties, i.e. ultimate tensile strength, Young's modulus, elongation, and total energy at fracture. The results showed that PLA/HDPE blends and their pure components behave pseudoplastically (n<1), blends apparent viscosity decreases with increasing shear rate. It was also found that the curves of apparent viscosity versus blending ratio go through a minimum at blending ratio PLA/HDPE (75/25) vol% and that the PLA/HDPE (16/84) vol% blend has the lowest value of viscous activation energy. The mechanical results showed that the blends ultimate tensile strength and Young's modulus increased at up to 30 vol% PLA content. By contrast, the elongation and total energy at fracture versus blending ratio showed a continuous decrease up to PLA/HDPE (50/50) vol% ratio. These results comply with the behaviour of an incompatible polymer blend system.
The relationship among caffeine consumption, anxiety, depression, and caffeine expectancies
Creators: name: Notes, Lisa Deirdre
Publisher: name: American University
Year: 2023

description: Current literature on the relationship between anxiety and caffeine consumption is mixed; some studies suggest that they are positively correlated, while others report a negative correlation or no relationship. This study evaluated the relationship between self-reported anxiety and caffeine use, using more precise measures of anxiety and caffeine consumption. In addition, the relationship between caffeine use and anxiety sensitivity and caffeine use and depression were also evaluated. Expectancies for the effects of caffeine were evaluated as a potential moderator of the relationship between caffeine and anxiety-related variables and caffeine and depression. Caffeine use was significantly positively related to both anxiety and depression, while no significant relationship was found between caffeine consumption and anxiety sensitivity. Regression analyses indicated that caffeine expectancies function as a moderator in the relationships between caffeine use and anxiety and caffeine use and depression, but not in the relationship between caffeine use and anxiety sensitivity.
A Time for Transformation of Governance Structures in VET? A German/Swiss Comparison
Creators: name: Hippach-Schneider, Ute
name: Rieder, Elena
Publisher: name: Zenodo
Year: 2021
Subjects: governance
digitalisation,
stakeholder in VET
international comparison

description: Digitalisation is affecting vocational education and training (VET) in a multitude of ways and at various levels. In both Switzerland and Germany, stakeholders in VET are responding to the serious technological changes with numerous initiatives and programmes. In this paper, we identify the major differences in policy strategies on state/public policy level, compare some major recommendations and actions of the core stakeholders and identify signs of a changing understanding of their roles in VET. The project basis on a qualitative method approach. There is a large thematic overlap in the topics that actors in Switzerland and Germany address in the context of digitalisation. Nevertheless, it becomes clear that the organisation of the legal governance of the system opens up different scope for action. The similarity of the two VET systems due to their cooperative approach is mitigated by this difference. Within the scope of the project on the role of stakeholders in times of digitalisation, it was possible in particular to identify an intensification of cooperation between the stakeholders combined with a discussion centring on a readjustment of the role of some actors.
The relationship among caffeine consumption, anxiety, depression, and caffeine expectancies
Creators: name: Notes, Lisa Deirdre
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology
classificationCode: 5203
subject: Clinical and health psychology

description: Current literature on the relationship between anxiety and caffeine consumption is mixed; some studies suggest that they are positively correlated, while others report a negative correlation or no relationship. This study evaluated the relationship between self-reported anxiety and caffeine use, using more precise measures of anxiety and caffeine consumption. In addition, the relationship between caffeine use and anxiety sensitivity and caffeine use and depression were also evaluated. Expectancies for the effects of caffeine were evaluated as a potential moderator of the relationship between caffeine and anxiety-related variables and caffeine and depression. Caffeine use was significantly positively related to both anxiety and depression, while no significant relationship was found between caffeine consumption and anxiety sensitivity. Regression analyses indicated that caffeine expectancies function as a moderator in the relationships between caffeine use and anxiety and caffeine use and depression, but not in the relationship between caffeine use and anxiety sensitivity.
D-instanton Perturbation Theory
Creators: name: Sen, Ashoke
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: D-instanton world-volume theory has open string zero modes describing collective coordinates of the instanton. The usual perturbative amplitudes in the D-instanton background suffer from infra-red divergences due to the presence of these zero modes, and the usual approach of analytic continuation in momenta does not work since all open string states on a D-instanton carry strictly zero momentum. String field theory is well-suited for tackling these issues. However we find a new subtlety due to the existence of additional zero modes in the ghost sector. This causes a breakdown of the Siegel gauge, but a different gauge fixing consistent with the BV formalism renders the perturbation theory finite and unambiguous. At each order, this produces extra contribution to the amplitude besides what is obtained from integration over the moduli space of Riemann surfaces.
description: LaTeX file, 24 pages; v2: expanded discussion on ghost zero modes
Optimal representations of quantum states by gaussians in phase space
Creators: name: Kenfack, Anatole
name: Rost, Jan M
name: de Almeida, Alfredo M Ozorio
Publisher: name: arXiv
Year: 2003
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: A two-step optimization is proposed to represent an arbitrary quantum state to a desired accuracy with the least number of gaussians in phase space. The Husimi distribution of the quantum state provides the information to determine the modulus of the weight for the gaussians. Then, the phase information contained in the Wigner distribution is used to obtain the full complex weights by considering the relative phases for pairs of gaussians, the chords. The method is exemplified with several excited states n of the harmonic and the Morse oscillators. A semiclassical interpretation of the number of gaussians needed as a function of the quantum number n is given. The representation can also be used to characterize Wigner and Husimi distributions directly which do not originate in a quantum state.
description: J.Phys.B:At.Mol.Opt.Phys.(accepted, March 2004)
Conductance and localization in disordered wires: role of evanescent states
Creators: name: Heinrichs, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: This paper extends an earlier analytical scattering matrix treatment of conductance and localization in coupled two- and three Anderson chain systems for weak disorder when evanescent states are present at the Fermi level. Such states exist typically when the interchain coupling exceeds the width of propagating energy bands associated with the various transverse eigenvalues of the coupled tight-binding systems. We calculate reflection- and transmission coefficients in cases where, besides propagating states, one or two evanescent states are available at the Fermi level for elastic scattering of electrons by the disordered systems. We observe important qualitative changes in these coefficients and in the related localization lengths due to ineffectiveness of the evanescent modes for transmission and reflection in the various scattering channels. In particular, the localization lengths are generally significantly larger than the values obtained when evanescent modes are absent. Effects associated with disorder mediated coupling between propagating and evanescent modes are shown to be suppressed by quantum interference effects, in lowest order for weak disorder.
title: Early Grain Filling Environment and Pre-Maturity α-Amylase Formation in UK Winter Wheat Genotypes
Creators: name: Tjin-Wong-Joe, Andro F.
Publisher: name: The Open University
Year: 2004

description: When the UK winter wheat variety Rialto produced unexpected low Hagberg falling numbers that could not be directly linked to sprouting, it was proposed that these reductions in quality could be due to PMAA. The problem was not identified during the selection and commercial development stages. In this project the hypothesis was tested that the variety Rialto is PMAA-susceptible. In addition, the effect of a previously proposed high temperature stimulus for PMAA followed by slow grain drying was assessed on plants grown in a controlled environment, throughout. This was done to eliminate any distorting effects the temperature history of plants grown in field or glasshouse had in previous studies. The identification of an effective and reliable PMAA stimulus could facilitate the development of a screening method for PMAA. Analysis was done on 13 year-location combinations of field grown Rialto. Together, visual and chemical assessments of sprouting and iso-electric focusing of α-amylase isozymes identified several samples with significant α-amylase activity in the apparent absence of sprouting. In addition, tests with α-amylase sensitive Phadebas gel revealed distinctive PMAA discoloration patterns in 10% to 44% of the grain from the 13 samples, leading to the conclusion that Rialto is PMAA-susceptible. Results from a controlled environment experiment confirmed the ability of a high temperature treatment to induce increased amylase production in the grain. However, the increase occurred in low humidity, considered to promote grain drying. Other results suggested that induction transpires during an earlier grain development stage than proposed in previous studies. Further work revealed the potential of a detached tiller technique to be used in a prospective fast and reliable screening method for PMAA.
Refined Strong Converse for the Constant Composition Codes
Creators: name: Cheng, Hao-Chung
name: Nakiboglu, Baris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: A strong converse bound for constant composition codes of the form $P_{e}^{(n)} \geq 1- A n^{-0.5(1-E_{sc}'(R,W,p))} e^{-n E_{sc}(R,W,p)}$ is established using the Berry-Esseen theorem through the concepts of Augustin information and Augustin mean, where $A$ is a constant determined by the channel $W$, the composition $p$, and the rate $R$, i.e., $A$ does not depend on the block length $n$.
description: 7 pages
"Learning Is not the Main Thing; The Main Thing Is to Be Human": Teacher Identity in Vocational Schools in Israel
Creators: name: Haybi Barak, Mirit
name: Shoshana, Ayihu
Publisher: name: Zenodo
Year: 2021
Subjects: teacher identity
vocational education
care
inequality
vocational teachers

description: Context: In light of previous studies, which emphasize vocational schools' singularity and their link to matters of social stratification (Shavit & Müller, 2000), examining teachers’ identity in these schools is of critical importance. This study, which engages in Israeli vocational school teachers' identity, poses two main questions: How do vocational school teachers define their role? How do these definitions and descriptions relate to educational stratification and social inequality? Methods: Seventeen teachers working in vocational schools in Israel were interviewed and were asked to describe their teaching role and teaching experience. The data were analyzed using IPA (Interpretative phenomenological analysis) principles. Findings: The findings revealed that teachers view vocational school students as "at-risk youth" and suffering from an array of emotional vulnerabilities. The school was described as a "residual space" for students who had dropped out of several "regular" schools. Consequently, the teachers described their work as requiring therapy and caring to a greater extent than teaching academic knowledge. Conclusions: For a deeper understanding of teacher identity, we propose distinguishing between types of educational care. The discussion addresses the implications of care ethics for educational stratification.
Talking gas: Local discourse of the Russian-Ukrainian gas trade
Creators: name: Susak, Natalia
Publisher: name: American University
Year: 2023

description: This paper examines the public discourse on gas trade issues in Russia and Ukraine since the Orange Revolution of 2004--2005. It sets out to answer the question what the debates in each country tell us about the prospects of gas-related conflicts or confrontations between Russia and Ukraine in the future. This paper relies on English-language expert literature to identify key issues in the bilateral gas trade and then utilizes Russian and Ukrainian language knowledge to examine the public statements and publications on these matters in each country. This review found significant differences and conflicts in how the elites, think tank experts and the public discuss this issue in Russia and Ukraine. The divergence in public debates about the bilateral gas trade in Russia and Ukraine has serious implications about the future stability of the gas trade relationship of the two countries.
Access and Barriers to VET for Refugees – a Comparison of Austria, Denmark and Germany
Creators: name: Hautz, Hannes
name: Junmin, Li
name: Helms Jørgensen, Christian
Publisher: name: Zenodo
Year: 2021
Subjects: refugees
social inclusion
VET system
access to VET
barrier

description: Context: Vocational education and training (VET) plays a crucial role in refugees’ social inclusion. This paper aims to examine how the VET systems of Austria, Denmark and Germany responded to the arrival of refugees since 2015. Methods: The study investigates the research question on two levels. At the political level, refugee integration policy in the three countries is analysed. At the operational level, the experiences of practitioners who implement these VET policy measures are examined using qualitative interviews. Findings: The analysis reveals substantial differences in the access to VET for refugees between the investigated countries. In Austria and Denmark, refugees have only a few opportunities for getting access to regular VET programmes and experience social and institutional exclusion leading to the fact that successful participation in VET is only possible in individual cases. On the contrary, Germany enhanced access to apprenticeships for asylum seekers and introduced various initiatives to support refugees’ integration. Nevertheless, barriers for refugees at the operational level are also evident in Germany. Conclusion: Comprehensive support measures are necessary for all three countries to help refugees overcome various barriers that result from their disadvantaged position in VET.
Penrose Limits and Spacetime Singularities
Creators: name: Blau, Matthias
name: Borunda, Monica
name: O'Loughlin, Martin
name: Papadopoulos, George
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We give a covariant characterisation of the Penrose plane wave limit: the plane wave profile matrix $A(u)$ is the restriction of the null geodesic deviation matrix (curvature tensor) of the original spacetime metric to the null geodesic, evaluated in a comoving frame. We also consider the Penrose limits of spacetime singularities and show that for a large class of black hole, cosmological and null singularities (of Szekeres-Iyer ``power-law type''), including those of the FRW and Schwarzschild metrics, the result is a singular homogeneous plane wave with profile $A(u)\sim u^{-2}$, the scale invariance of the latter reflecting the power-law behaviour of the singularities.
description: 9 pages, LaTeX2e; v2: additional references and cosmetic corrections
Calliopsis (Calliopsis) sonora Shinn 1967
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Calliopsis
Calliopsis sonora

description: Calliopsis (Calliopsis) sonora Shinn, 1967
[Holotype: BBSL; ♂ Rio Mayo, Sonora, Mexico; August 25, 1935]
Shinn (1967) reported one female from the Gulf Coast in Canipolé, BCS collected on October 2, 1941. Shinn (1967) cited this specimen without certainty of being Calliopsis sonora due to the presence of a yellow maculation on the tegula and the length of the first labial palpi, which is inconsistent with other specimens. We compared the specimen to the allotype from Rio Mayo, Bernardino, Sonora and we find the morphology between the two specimens indistinguishable. See fig. 26.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 74, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Fold bifurcation entangled surfaces for one-dimensional Kitaev lattice model
Creators: name: Momeni, Davood
name: Channuie, Phongpichit
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate feasible holography with the Kitaev model using dilatonic gravity in AdS$_2$. We propose a generic dual theory of gravity in the AdS$_2$ and suggest that this bulk action is a suitable toy model in studying quantum mechanics in the Kitaev model using gauge/gravity duality. This gives a possible equivalent description for the Kitaev model in the dual gravity bulk. Scalar and tensor perturbations are investigated in detail. In the case of near AdS perturbation, we show that the geometry still "freezes" as is AdS, while the dilation perturbation decays at the AdS boundary safely. The time-dependent part of the perturbation is an oscillatory model. We discover that the dual gravity induces an effective and renormalizable quantum action. The entanglement entropy for bulk theory is computed using extremal surfaces. We prove that these surfaces have a fold bifurcation regime of criticality. Our approach shows directly that chaos in AdS$_2$ can be understood via fold bifurcation minimal surfaces.
description: v2: 25 pages, 2 figures, to appear in Int. J. Geom. Meth. Mod. Phys
Enhanced flow rate by the concentration mechanism of Tetris particles when discharged from a hopper with an obstacle
Creators: name: Gao, Guo-Jie Jason
name: Yang, Fu-Ling
name: Holcomb, Michael C.
name: Blawzdziewicz, Jerzy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We apply a holistic 2D Tetris-like model, where particles move based on prescribed rules, to investigate the flow rate enhancement from a hopper. This phenomenon was originally reported in the literature as a feature of placing an obstacle at an optimal location near the exit of a hopper discharging athermal granular particles under gravity. We find that this phenomenon is limited to a system of sufficiently many particles. In addition to the waiting room effect, another mechanism able to explain and create the flow rate enhancement is the concentration mechanism of particles on their way to reaching the hopper exit after passing the obstacle. We elucidate the concentration mechanism by decomposing the flow rate into its constituent variables: the local area packing fraction $ϕ_l^E$ and the averaged particle velocity $v_y^E$ at the hopper exit. In comparison to the case without an obstacle, our results show that an optimally placed obstacle can create a net flow rate enhancement of relatively weakly driven particles, caused by the exit-bottleneck coupling if $ϕ_l^E > ϕ_o^c$, where $ϕ_o^c$ is a characteristic area packing fraction marking a transition from fast to slow flow regimes of Tetris particles. Utilizing the concentration mechanism by artificially guiding particles into the central sparse space under the obstacle or narrowing the hopper exit angle under the obstacle, we can create a man-made flow rate peak of relatively strongly-driven particles that initially exhibit no flow rate peak. Additionally, the enhanced flow rate can be maximized by an optimal obstacle shape, particle acceleration rate towards the hopper exit, or exit geometry of the hopper.
description: 15 pages, 15 figures
Talking gas: Local discourse of the Russian-Ukrainian gas trade
Creators: name: Susak, Natalia
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: This paper examines the public discourse on gas trade issues in Russia and Ukraine since the Orange Revolution of 2004--2005. It sets out to answer the question what the debates in each country tell us about the prospects of gas-related conflicts or confrontations between Russia and Ukraine in the future. This paper relies on English-language expert literature to identify key issues in the bilateral gas trade and then utilizes Russian and Ukrainian language knowledge to examine the public statements and publications on these matters in each country. This review found significant differences and conflicts in how the elites, think tank experts and the public discuss this issue in Russia and Ukraine. The divergence in public debates about the bilateral gas trade in Russia and Ukraine has serious implications about the future stability of the gas trade relationship of the two countries.
Federal Income Taxes and Their Effects on Inter and Intra City Resource Allocation
Creators: name: Hochman, Oded
name: Pines, David
name: Hochman, Oded
name: Pines, David
Publisher: name: Unknown
Year: 1990
Subjects: Financial Economics
Labor and Human Capital

description: This paper discusses the distortive effect of federal income tax on the efficiency of resource allocation within and between cities. The underlying assumption is that cities differ from one another in labor productivity. Consequently, in equilibrium, the size, the nominal income, and the price of housing vary across cities. When uniform income tax rate is used for financing federal expenditure, the shadow price of housing exceeds the market price in the larger cities, indicating that the stock of housing is too small and the per—capita housing consumption is too large. The opposite is true in small cities, where also, if housing and LPG (local public good) are net substitutes, the provision of the LPG is excessive. The paper also discusses the effects of federal corporate profit and net land rent taxes. The first is shown to discourage the supply of the LPG; the second is not always a feasible tax instrument capable to raise the predetermined tax revenue. This is especially true in the long run.
An exploration of mobile devices as grid resources: Using an Intel X86 virtual machine to run BOINC on an iPhone
Creators: name: Edgar, William Scott
Publisher: name: American University
Year: 2023

description: This work is focused on development of software capable of harnessing the idle processing power of mobile devices and contributing them to a voluntary grid computing framework such as the Berkeley Open Infrastructure for Network Computing (BOINC). Such frameworks are designed to provide a platform capable of amassing many processing cycles for scientific analysis of important and complex computational problems such as disease control modeling, climate change analysis, DNA sequencing, and analysis of astronomical data. Once developed, owners of newer generation mobile devices such as the Apple iPhone or BlackBerry Storm could download and install the client application to participate in a global voluntary computational grid. Such grids have existed since the mid-1990s for computers, but have yet to be extended to the world of mobile devices. Mobile devices are quickly becoming a worthwhile target for grid computing applications. The individual processing power of mobile "smartphone" devices now exceeds that of computers that first contributed to the BOINC application grid. Additionally, the number of mobile devices already vastly outnumbers standard computers, and their growth rate is much more rapid than traditional computers. The increasing power and number of mobile devices makes them an attractive target for grid computing. To date, most research related to mobile devices and grid computing is focused on the access and use of grid resources. The premise of this paper is to propose the use of mobile devices themselves as grid computing nodes. A demonstration of the feasibility of this concept is accomplished by implementing the BOINC client on an Apple iPhone. Work units are downloaded from a BOINC server and executed on the iPhone via a virtual machine emulating an x86 processor, and results are uploaded to the server. The world of mobile devices brings renewed challenges to the problem of grid client design in the areas of network bandwidth, processor capability, storage, and energy consumption. Use of this prototype enables the conduction of tests to study performance, energy efficiency, and bandwidth on a cellular device against a more traditional grid computing node.
Calliopsis (Hypomacrotera) persimilis
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Calliopsis
Calliopsis persimilis

description: Calliopsis (Hypomacrotera) persimilis (Cockerell, 1900)
[Lectotype: CASC ♂ Phoenix, Arizona, US; October 7, 1899]
This species is well distributed in the SD and has been reported in the Lower Colorado Desert (BC) and in La Giganta Ranges (BCS) by Danforth (1994). See fig. 27.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 75, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Effects of planting date and GA3 on growth, yield and quality of onion seeds grown from sets
Creators: name: Islam, A. K. M. M.
name: Mondal, M. F.
name: Islam, A. K. M. M.
name: Mondal, M. F.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Crop Production/Industries
subject: Productivity Analysis
subject: Planting date
subject: Conc. of GA3
subject: Yield
subject: Quality
subject: Onion seed

description: An experiment was conducted at the Horticulture Farm, Bangladesh Agricultural University (BAU), Mymensingh during the period from October, 2002 to April, 2003 to study the effects of planting date and concentration of GA3 on the growth, yield and quality of onion seeds. There were two planting dates viz., 30 October and 20 November and five concentrations of GA3 viz., 0, 25, 50, 75 and 100 ppm. The two-factor experiment was laid out in the split plot design with three replications. The planting date and concentration of GA3 showed significant influence on the growth of plant and yield of onion seed. The highest yield of 392.27 kg/ha was obtained from 30 October planting. The maximum seed yield (389.67 kg) was found at the concentration of 75 ppm GA3 and the lowest seed yield 379.60 kg per hectare was noticed from the control plant. The treatment combination of 30 October planting x 75 ppm GA3 gave the highest seed yield (398.67 kg/ha). The quality of onion seeds varied significantly due to planting time and concentration of GA3 used. The highest weight of thousand seeds (3.15 g) was obtained from 20 November planting time and 75 ppm GA3. The highest germination percentage (78.90)was recorded from the treatment combination of 30 October planting x 75 ppm GA3.
Effect of defoliation at vegetative stage on dry mass production and yield in cowpea
Creators: name: Biswas, M. I.
name: Hossain, M. A.
name: Fakir, M. S. A.
name: Biswas, M. I.
name: Hossain, M. A.
name: Fakir, M. S. A.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Productivity Analysis
subject: Defoliation
subject: Canopy structure
subject: DM partitioning
subject: Pod and Seed yield
subject: Cowpea

description: Different degrees of defoliation (0%, 33%, 66%, and 100%) treatments were employed at vegetative stage (55 days after sowing) to investigate their effects on dry mass (DM) production, pod and seed yield in a cowpea (var. Fallon-1). The results revealed that DM was the highest in control (74.3 g/plant) and it decreased significantly with increasing degree of defoliation. Results further showed that pod yield was similar between control and 33% defoliation treatments (average of 31.2 g/plant) and seed yield followed a trend similar to that of pod yield in these treatments (average of 20.5 g/plant). It may be concluded that cowpea variety like Fallon-1 may sustain partial defoliation at vegetative stage without affecting pod and seed yield. The practical implication of the results in relation to pest and disease control, and fodder yield is also discussed.
Country Size and Educational Change: Comparing Reforms of Skill Formation in Germany and Switzerland
Creators: name: Graf, Lukas
Publisher: name: Zenodo
Year: 2021
Subjects: institutional change
comparative education research
skill formation policy
collective skill formation
apprenticeship training

description: This conference paper argues that country size can play a crucial role in shaping the type of gradual change observed in collective skill formation systems. Collectively governed dual-apprenticeship training has its base in the industrial and crafts sectors of the economy and builds on the decentralized cooperation of multiple public and private stakeholders. As a result, it tends to be strongly path dependent, which favours gradual over radical forms of change. However, in recent years, dual-apprenticeship training has been increasingly challenged by the rise of the knowledge and service economy and the growing popularity of academic forms of education. In this context, I compare policy responses in Switzerland and Germany, which represent one small and one large collective skill formation system respectively. The historical-institutionalist analysis finds that the dominant trajectory of change is conversion in Switzerland but layering in Germany, with different implications for the future viability of collective skill formation.
An exploration of mobile devices as grid resources: Using an Intel X86 virtual machine to run BOINC on an iPhone
Creators: name: Edgar, William Scott
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 46
subject: Information and computing sciences

description: This work is focused on development of software capable of harnessing the idle processing power of mobile devices and contributing them to a voluntary grid computing framework such as the Berkeley Open Infrastructure for Network Computing (BOINC). Such frameworks are designed to provide a platform capable of amassing many processing cycles for scientific analysis of important and complex computational problems such as disease control modeling, climate change analysis, DNA sequencing, and analysis of astronomical data. Once developed, owners of newer generation mobile devices such as the Apple iPhone or BlackBerry Storm could download and install the client application to participate in a global voluntary computational grid. Such grids have existed since the mid-1990s for computers, but have yet to be extended to the world of mobile devices. Mobile devices are quickly becoming a worthwhile target for grid computing applications. The individual processing power of mobile "smartphone" devices now exceeds that of computers that first contributed to the BOINC application grid. Additionally, the number of mobile devices already vastly outnumbers standard computers, and their growth rate is much more rapid than traditional computers. The increasing power and number of mobile devices makes them an attractive target for grid computing. To date, most research related to mobile devices and grid computing is focused on the access and use of grid resources. The premise of this paper is to propose the use of mobile devices themselves as grid computing nodes. A demonstration of the feasibility of this concept is accomplished by implementing the BOINC client on an Apple iPhone. Work units are downloaded from a BOINC server and executed on the iPhone via a virtual machine emulating an x86 processor, and results are uploaded to the server. The world of mobile devices brings renewed challenges to the problem of grid client design in the areas of network bandwidth, processor capability, storage, and energy consumption. Use of this prototype enables the conduction of tests to study performance, energy efficiency, and bandwidth on a cellular device against a more traditional grid computing node.
title: The Petrogenesis Of The Penmaenmawr Intrusion, North Wales
Creators: name: Durham, John
Publisher: name: The Open University
Year: 2004

description: The Penmaenmawr Intrusion forms a prominent hill on the north Wales coast and consists of a very fine- to medium-grained microdiorite. Previous studies have considered the Penmaenmawr Intrusion to be related to the extrusive rocks of the Llewelyn Volcanic Group, that were erupting in early Caradoc times in a back arc basin associated with subduction due to the closure of the lapetus Ocean to the northwest.

 The objective of this study was to examine the mineralogical and geochemical variations within the intrusion in order to investigate its petrogenesis. Seventy samples were collected for petrological examination and geochemical analysis and the results were used to model possible magmatic processes.

 This study proposes that the Penmaenmawr Intrusion was the result of two emplacements of magma from an underlying, already fractionated and layered, magma chamber. Initial injections of magma took place along the southern boundary and in the east of the present intrusion resulting in the very finegrained rocks at the margins of the intrusion. The second, larger emplacement, with a slightly more basic composition forms the main body of the intrusion. Local mixing between the two batches of magma took place along their common boundary blurring their junctions and some localised mixing also took place during the transport and emplacement of the second batch of magma, which served to obscure the evidence for the original compositional layering of the underlying magma chamber.

 Following emplacement, the Penmaenmawr Intrusion was variably altered forming a range of secondary minerals. This study proposes that the alteration is mainly due to the ingress of hydrothermal fluids along faults and shear planes during two alteration episodes. The first associated with emplacement where hot fluids, originating from the cooling magma, caused changes to the original minerals and the second associated with sub-greenschist facies metamorphism during the Acadian regional metamorphic event of early to mid Devonian times.
Red solitons: evidence of spatio--temporal instability in $χ^{(2)}$ spatial-soliton dynamics
Creators: name: Minardi, Stefano
name: Blasi, Giovanni
name: Di Trapani, Paolo
name: Varanavicius, Arunas
name: Valiulis, Gintaras
name: Berzanskis, Audrius
name: Piskarskas, Algis
Publisher: name: arXiv
Year: 2003
Subjects: subject: Optics (physics.optics)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In $χ^{(2)}$ three-wave mixing, the noise-seeded spatio--temporal modulational instability has a dramatic impact on the spatial-soliton dynamics, leading to the counterintuitive observation of a soliton with no apparent participation of the high-frequency field in the process.
description: 5 pages, 4 figures, submitted for publication
Monitoring Chandra observations of the quasi-persistent neutron-star X-ray transient MXB 1659-29 in quiescence: the cooling curve of the heated neutron-star crust
Creators: name: Wijnands, Rudy
name: Homan, Jeroen
name: Miller, Jon M.
name: Lewin, Walter H. G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed the quasi-persistent neutron-star X-ray transient and eclipsing binary MXB 1659-29 in quiescence on three occasions with Chandra. The purpose of our observations was to monitor the quiescent behavior of the source after its last prolonged (~2.5 years) outburst which ended in September 2001. The X-ray spectra of the source are consistent with thermal radiation from the neutron-star surface. We found that the bolometric flux of the source decreased by a factor of 7-9 over the time-span of 1.5 years between our first and last Chandra observations. The effective temperature also decreased, by a factor of 1.6-1.7. The decrease in time of the bolometric flux and effective temperature can be described using exponential decay functions, with e-folding times of 0.7 and ~3 years, respectively. Our results are consistent with the hypothesis that we observed a cooling neutron-star crust which was heated considerably during the prolonged accretion event and which is still out of thermal equilibrium with the neutron-star core. We could only determine upper-limits for any luminosity contribution due to the thermal state of the neutron-star core. The rapid cooling of the neutron-star crust implies that it has a large thermal conductivity. Our results also suggest that enhanced cooling processes are present in the neutron-star core.
description: Accepted for publication in ApJ Letters: March 19, 2004
Design of Work Process Oriented Digital Learning Systems Based on Work Analysis
Creators: name: Goppold, Marvin
name: Frenz, Martin
name: Nitsch, Verena
Publisher: name: Zenodo
Year: 2021
Subjects: Workplace
Action research
Education technology
Didactics

description: Digital learning media can extend traditional media concepts beyond the presentation of explicit knowledge. In this paper, a digital learning system for Technical Vocational Education and Training (TVET) is described that integrates the concept of learning from errors into work processes of company-based apprenticeships. The learning system detects action errors at work, simulates error consequences and visualizes possibly hazardous consequences in Augmented Reality. In order to do so, the digital learning system utilizes information gained from work analysis. Work analysis methods help to reveal and communicate variations in work processes. Traditionally, they support qualification research with empirical evidence on changes in work practice and need for adaption. This article investigates whether work analyses facilitate the development of digital learning media and didactic concepts in TVET. For this purpose, work processes in company-based apprenticeships have been analysed using structural and procedural work analysis methods. The results illustrate the contribution of work analysis on didactic conception using the Hamburg Model of Teaching Practice and Learning Practice and face a critical discussion. The article further provides an outlook on a desideratum, which focusses on the integration of structural and procedural work analysis results in a didactic compatible unified technical development framework.
Care ethics and human rights: Frameworks for negotiating identity, migration and conflict
Creators: name: West, Heidi Sierra
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society

description: This research project explores the relationships between, identity, migration, and conflict through the lenses of two different frameworks; human rights and feminist care ethics. The analysis of these relationships and of individual agency in the recreation of identity is guided by questions such as: How have individuals impacted by conflict-induced migration recreated identity and what effect does this have on the reconciliation process? Is the human rights model or the feminist care ethics model better poised to analyze the impact of conflict-induced migration on individual and community identity for Chechens? Through an exploration of how migration affects individual identity and potentially reconciliation, we may be able to reveal some indicators for positive social change in the Caucasus region and elsewhere.
Calliopsis (Hypomacrotera) sonorana
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Calliopsis
Calliopsis sonorana

description: Calliopsis (Hypomacrotera) sonorana (Timberlake, 1969)
[Holotype: UCRC; ♀ Oroz, Sonora, Mexico; September 17, 1957]
This species inhabits the SD in the USA, and Mexico. We examined five specimens (3 ♂, 2 ♀) collected in the Gulf Coast, BCS in October 1941 (CASC). See fig. 27.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 75, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Multiphoton signals of a (96 GeV?) stealth boson
Creators: name: Aguilar-Saavedra, J. A.
name: Joaquim, F. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Cascade decays of new scalars into final states with multiple photons and possibly quarks may lead to distinctive experimental signatures at high-energy colliders. Such signals are even more striking if the scalars are highly boosted, as when produced from the decay of a much heavier resonance. We study this type of events within the framework of the minimal stealth boson model, an anomaly-free $\text{U}(1)_{Y'}$ extension of the Standard Model with two complex scalar singlets. It is shown that, while those signals may have cross sections that might render them observable with LHC Run 2 data, they have little experimental coverage. We also establish a connection with a CMS excess observed in searches for new scalars decaying into diphoton final states near 96 GeV. In particular, we conclude that the predicted multiphoton signatures are compatible with such excess.
description: LaTeX 32 pages. Comments added and discussions extended. Final version in EPJC
Extractable phosphorus in some soils of Bangladesh and its critical limits for mustard
Creators: name: Haque, M. Q.
name: Faruque, A.
name: Jahangir, M. M. R.
name: Rahman, M. H.
name: Matin, M. A.
name: Haque, M. Q.
name: Faruque, A.
name: Jahangir, M. M. R.
name: Rahman, M. H.
name: Matin, M. A.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Crop Production/Industries
subject: Production Economics
subject: Productivity Analysis
subject: Extractable phosphorus
subject: Relative yield
subject: Dry matter yield
subject: Critical limit
subject: Mustard

description: A pot experiment was conducted at glasshouse of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, with 18 extensively cultivated soils of Bangladesh to evaluate extractable P and to determine its critical limit for mustard. The available P contents in soils were extracted by four methods viz. Olsen, Hunter, Bray II and Nelson. The mean extractable P in soils was found to be in the order of Nelson > Bray 11 > Hunter > Olsen. Considerable variation was found in the amount of extractable P depending on the soils and extractants used. Dry matter yields were remarkably increased with addition of increasing rate of phosphatic fertilizer and the soil having low extractable P responded better to applied P. All extractable P except Nelson correlated positively and significantly with relative yield. Extractable P of all extractants except Nelson was positively and significantly correlated with P content " of mustard in all and low pH soils. Phosphorus uptake was also positively correlated with all extractants in all and low pH soils. The critical limits of soil extractable P for mustard for Olsen, Hunter, Bray II and Nelson method were estimated as 8.6, 9.5, 14.5 and 20.0 ppm (Graphical method) and 10.5, 12.5, 16.5, and 16.5 ppm (Statistical method) respectively. Based on B2 value it may be-concluded that Nelson method of P extraction was found to be the best method for estimating P response of mustard.