cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Application of geotechnical numerical modelling of sill pillar mining options to aid value-driven decision-making
Creators: name: Archibald, Craig James
Publisher: name: University of British Columbia
Year: 2024

description: Sill pillars divide vertically extensive orebodies into mining blocks to allow concurrent mining operations. Sill pillars also provide regional stability to a mining district and are usually one of the last volumes of ore to be mined. The initial design for sill pillar mining is often only high level, made without knowledge of the ground performance. The final design and planning occurs many years or decades after the initial design was made, which did not account for operational learnings. This thesis describes the decision process for positioning the overcut development within a sill pillar while considering operational and geotechnical issues. There are three possible scenarios for the placement of the overcut development: in the sill pillar, in the backfilled stope directly above the sill pillar, or a combination of the sill pillar and backfill. Numerical modelling (finite element) was used to aid in the decision-making process for the location of the overcut development. In addition, this modelling was used to understand the potential failure mechanisms and forecast the mining conditions during development and production in a sill pillar. Results from the numerical modelling have shown that mining in the adjacent blocks caused a decrease in stress in the sill pillar. Potential failure mechanisms include the deformation and unravelling of the overcut development and the failure of the longhole stope walls due to this decrease in stress. To apply to an operating mine, the numerical model must be of sufficient detail to capture the mechanics of the problem yet be completed in a timeframe to support the decision-making process. Each of the operational strengths and weaknesses of the overcut development scenarios were evaluated alongside the numerical models to understand the implications of each development scenario. Using a combination of numerical modelling and operational considerations, the location of the overcut development can be decided to maintain safe access for underground personnel during the recovery of the sill pillar.
Reconstruction of the Primordial Power Spectrum using Temperature and Polarisation Data from Multiple Experiments
Creators: name: Nicholson, Gavin
name: Contaldi, Carlo R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We develop a method to reconstruct the primordial power spectrum, P(k), using both temperature and polarisation data from the joint analysis of a number of Cosmic Microwave Background (CMB) observations. The method is an extension of the Richardson-Lucy algorithm, first applied in this context by Shafieloo & Souradeep. We show how the inclusion of polarisation measurements can decrease the uncertainty in the reconstructed power spectrum. In particular, the polarisation data can constrain oscillations in the spectrum more effectively than total intensity only measurements. We apply the estimator to a compilation of current CMB results. The reconstructed spectrum is consistent with the best-fit power spectrum although we find evidence for a `dip' in the power on scales k ~ 0.002 Mpc^-1. This feature appears to be associated with the WMAP power in the region 18 < l < 26 which is consistently below best--fit models. We also forecast the reconstruction for a simulated, Planck-like survey including sample variance limited polarisation data.
description: 8 pages, 5 figures, comments welcome
Observation of Two-source Interference in the Photoproduction Reaction $Au Au \to Au Au ρ^0$
Creators: name: Abelev, B. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $ρ^0$. The $ρ^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $ρ^0$ production. Since the $ρ^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is $87% \pm 5% {\rm (stat.)}\pm 8%$ (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
description: Slightly revised version, to appear in PRL. 6 pages with 4 figures
The effect of observing different information on learning the basketball jump shot
Creators: name: Rafiee, Saleh
name: Dana, Amir
Publisher: name: figshare
Year: 2021
Subjects: subject: 170114 Sport and Exercise Psychology
subject: FOS: Psychology

description: Absolute and relative information may have different roles during motor learning through observation.
Objective:
This study aimed to address the effect of observing different information on the learning of the basketball jump shot.
Methods:
For this purpose, 30 participants were included in the study and divided into three groups (Full Body, Arm, and Wrist) according to the information they observed. Full Body group observed information relating to all body parts, Arm group observed information relating to the throwing arm, and the Wrist group observed the information relating to the throwing wrist. All information was presented in the point light format. During data acquisition, participants performed 30 trials which were observed in the model 5 times before the first trial and once before the remaining trials. Twenty-four hours later, 10 trials were performed as a retention test. After retention, there was a re-acquisition period in which all groups observed full-body information in an order similar to the acquisition period and then performed 10 trials. Accuracy, visual search (eye fixations), and kinematics data (intra-limb coordination variability) were acquired.
Results:
No between-group difference existed in the accuracy measurement. Results of the kinematics data (intra-limb coordination) showed that Full Body and Arm groups performed more like the model than Wrist group. Visual search data showed that all groups were fixed more on the throwing arm than other parts of the body.
Conclusions:
These results showed that restricted relative information can be more useful for learning a throwing action.
Suzaku Observation of the Radio Halo Cluster Abell 2319: Gas Dynamics and Hard X-ray Properties
Creators: name: Sugawara, Chika
name: Takizawa, Motokazu
name: Nakazawa, Kazuhiro
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the results of Suzaku observation of the radio halo cluster Abell 2319. The metal abundance in the central cool region is found to be higher than the surrounding region, which was not resolved in the former studies. We confirm that the line-of-sight velocities of the intracluster medium in the observed region are consistent with those of the member galaxies of entire A2319 and A2319A subgroup for the first time, though any velocity difference within the region is not detected. On the other hand, we do not find any signs of gas motion relevant to A2319B subgroup. Hard X-ray emission from the cluster is clearly detected, but its spectrum is likely thermal. Assuming a simple single temperature model for the thermal component, we find that the upper limit of the non-thermal inverse Compton component becomes $2.6 \times 10^{-11}$ erg s$^{-1}$ cm$^{-2}$ in the 10-40 keV band, which means that the lower limit of the magnetic field is 0.19 $μ$G with the radio spectral index 0.92. Although the results slightly depend on the detailed spectral modeling, it is robust that the upper limit of the power-law component flux and lower limit of the magnetic field strength become $\sim 3 \times 10^{-11}$ erg s$^{-1}$ cm$^{-2}$ and $\sim 0.2 μ$G, respectively. Considering the lack of a significant amount of very hot ($\sim 20$ keV) gas and the strong bulk flow motion, it is more likely that the relativistic non-thermal electrons responsible for the radio halo are accelerated through the intracluster turbulence rather than the shocks.
description: 12 pages, 15 figures, accepted for publication in PASJ
Bridging the scales in biomaterials: role of biophysics from atom-scale to nano-scale
Creators: name: Banerjee, Akash
Publisher: name: No Publisher Supplied
Year: 2023

description: Biomolecules such as peptides and lipids can self-assemble to form large, ordered structures. These ordered structures form biomaterials that have applications in areas such as biomedicine and electronics. The functionality of these biomaterials can be tuned by modifying the sequence of the biomolecules. To enable the design of such tunable materials with good precision, we need to characterize the biophysics underlying the self- assembly process. At small spatiotemporal scales, the local structure of a biomolecule (for example, the secondary structure of a peptide) governs the intermolecular interactions. At larger spatiotemporal scales, the overall features of the ordered structure (for example, shape, stability, and porosity) govern the functionality of the biomaterial. In this work, a set of computational tools are built to address the self-assembly of biomolecules at multiple scales. First, spherical nanostructures, also known as vesicles, are studied at large spatiotemporal scales. These vesicles encompass polyamidoamine dendron-grafted amphiphiles (PDAs) and dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) lipids. The overall stability of the vesicles is determined as a function of concentration and generation (degree of branching) of PDAs. Next, the local interactions between lipid-like peptides (V6K2, V:Valine and K:Lysine) are studied at small spatiotemporal scales. A model is developed to specifically capture the local structure and chemical details of these peptides. In this way, the organization of a single peptide in a small-sized aggregate is resolved accurately. Furthermore, the model resolves the assembly of these peptides into intermediate-sized aggregates that are in qualitative agreement with experiments. This demonstrates that the technique can resolve the structure (small-scale) and assembly (intermediate-scale) of peptides. Finally, a computational workflow is developed to automate the implementation of these computational tools. This will enable the extension of these tools to different chemical systems, sizes and environmental conditions.
Calibrating the Baryon Oscillation Ruler for Matter and Halos
Creators: name: Padmanabhan, Nikhil
name: White, Martin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We characterize the nonlinear evolution of the baryon acoustic feature as traced by the dark matter and halos, using a combination of perturbation theory and N-body simulations. We confirm that the acoustic peak traced by the dark matter is both broadened and shifted as structure forms, and that this shift is well described by second-order perturbation theory. These shifts persist for dark matter halos, and are a simple function of halo bias, with the shift (mostly) increasing with increasing bias. Extending our perturbation theory results to halos with simple two parameter bias models (both in Lagrangian and Eulerian space) quantitatively explains the observed shifts. In particular, we demonstrate that there are additional terms that contribute to the shift that are absent for the matter. At z=0 for currently favored cosmologies, the matter shows shifts of ~0.5%, b=1 halos shift the acoustic scale by ~0.2%, while b=2 halos shift it by ~0.5%; these shifts decrease by the square of the growth factor at higher redshifts. These results are easily generalized to galaxies within the halo model, where we show that simple galaxy models show marginally larger shifts than the correspondingly biased halos, due to the contribution of satellites in high mass halos. While our focus here is on real space, our results make specific predictions for redshift space. For currently favored cosmological models, we find that the shifts for halos at z=0 increase by ~0.3%; at high z, they increase by ~0.5% D^2. Our results demonstrate that these theoretical systematics are smaller than the statistical precision of upcoming surveys, even if one ignored the corrections discussed here. Simple modeling, along the lines discussed here, has the potential to reduce these systematics to below the levels of cosmic variance limited surveys.
description: 12 pages, 13 figures, PRD in press. Latest version matches journal, typos in Appendix fixed
Two-time quantities as elements of physical reality
Creators: name: Maquedano, Lucas
name: Ribeiro, Alexandre D.
name: Costa, Ana C. S.
name: Angelo, Renato M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In recent years, time correlators have received renewed attention, especially under the guise of identifiers of nonclassical correlations. However, the physical interpretation of these objects, and more generally of multi-times variables, remains ambiguous, which may be one of the reasons why they are so difficult to measure. In this work, we introduce and advance the perspective that a two-time correlator should actually be regarded as an average involving a novel single physical observable, one that cannot be rephrased in terms of the primitive ones, according to quantum principles. In particular, we provide examples showing that the presumed constituents of a two-time correlator and the proposed two-time operator itself cannot be simultaneous elements of the physical reality.
description: 17 pages, 1 figure
Singular kernels, multiscale decomposition of microstructure, and dislocation models
Creators: name: Conti, Sergio
name: Garroni, Adriana
name: Müller, Stefan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 49J45, 74C99

description: We consider a model for dislocations in crystals introduced by Koslowski, Cuitiño and Ortiz, which includes elastic interactions via a singular kernel behaving as the $H^{1/2}$ norm of the slip. We obtain a sharp-interface limit of the model within the framework of $Γ$-convergence. From an analytical point of view, our functional is a vector-valued generalization of the one studied by Alberti, Bouchitté and Seppecher to which their rearrangement argument no longer applies. Instead we show that the microstructure must be approximately one-dimensional on most length scales and exploit this property to derive a sharp lower bound.
Compromisso social e desenvolvimento local: desafios no financiamento da Universidade do Estado da Bahia (UNEB)
Creators: name: Damásio, Ariane Brasil
name: Oliveira, Cristiane Neves de
name: DE SOUZA, ANA CLEIDE
name: Mota Júnior, Antônio de Macêdo
Publisher: name: figshare
Year: 2021
Subjects: subject: 130304 Educational Administration, Management and Leadership
subject: FOS: Educational sciences

description: Este trabalho aborda o tema dos desafios do financiamento de uma universidade pública no que diz respeito ao seu compromisso social e contribuição para o desenvolvimento local. Desse modo, apresenta os resultados preliminares de um estudo exploratório, bibliográfico e documental, com o objetivo de analisar os desafios relacionados ao contexto do financiamento da Universidade do Estado da Bahia (UNEB) e seus possíveis impactos para o compromisso social dessa universidade, ao assumir sua missão institucional e contribuição para o desenvolvimento local das regiões onde se encontra inserida. Para tanto, foi necessário contextualizar o surgimento e a atuação dessa universidade, além de apresentar conceitos sobre compromisso social e abordar a relação entre universidade e desenvolvimento local. Os resultados destacam os possíveis impactos das restrições orçamentárias enfrentadas por essa universidade, no que se refere ao desempenho dessa instituição para com o seu compromisso social e desenvolvimento local.
Graph Minors and Minimum Degree
Creators: name: Fijavž, Gašper
name: Wood, David R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C83, 05C40

description: Let $\mathcal{D}_k$ be the class of graphs for which every minor has minimum degree at most $k$. Then $\mathcal{D}_k$ is closed under taking minors. By the Robertson-Seymour graph minor theorem, $\mathcal{D}_k$ is characterised by a finite family of minor-minimal forbidden graphs, which we denote by $\widehat{\mathcal{D}}_k$. This paper discusses $\widehat{\mathcal{D}}_k$ and related topics. We obtain four main results: We prove that every $(k+1)$-regular graph with less than ${4/3}(k+2)$ vertices is in $\widehat{\mathcal{D}}_k$, and this bound is best possible. We characterise the graphs in $\widehat{\mathcal{D}}_{k+1}$ that can be obtained from a graph in $\widehat{\mathcal{D}}_k$ by adding one new vertex. For $k\leq 3$ every graph in $\widehat{\mathcal{D}}_k$ is $(k+1)$-connected, but for large $k$, we exhibit graphs in $\widehat{\mathcal{D}}_k$ with connectivity 1. In fact, we construct graphs in $\mathcal{D}_k$ with arbitrary block structure. We characterise the complete multipartite graphs in $\widehat{\mathcal{D}}_k$, and prove analogous characterisations with minimum degree replaced by connectivity, treewidth, or pathwidth.
Direct measurements of the penetration depth in a superconducting film using magnetic force microscopy
Creators: name: Nazaretski, E.
name: Thibodaux, J. P.
name: Vekhter, I.
name: Civale, L.
name: Thompson, J. D.
name: Movshovich, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the local measurements of the magnetic penetration depth $λ$ in a superconducting Nb film using magnetic force microscopy (MFM). We developed a method for quantitative extraction of the penetration depth from single-parameter simultaneous fits to the lateral and height profiles of the MFM signal, and demonstrate that the obtained value is in excellent agreement with that obtained from the bulk magnetization measurements.
description: 3 pages, 4 figures, submitted to APL on 08/18/09
A Mechatronic Solution for Time-Resolved Cryogenic Electron-Microscopy Sample Preparation
Creators: name: Di Perna, Maximus
Publisher: name: Stanford Digital Repository
Year: 2023
Subjects: Time resolved cryo-EM

description: Cryogenic Electron Microscopy (Cryo-EM) is an established method of imaging biomolecules with an electron microscope. The current process of preparing samples for Cryo-EM involves loading the grid into a plunge-freezer and plunging it into liquid ethane to freeze the grid. As the grid falls into the liquid ethane, two samples are mixed and deposited on the grid using a microfluidic spraying device. In order to improve the practicality and repeatability of the plunge-freezer, a mechatronic device was built to simplify the process of replacing the microfluidic spraying device.
Cooper pairing near charged black holes
Creators: name: Hartman, Thomas
name: Hartnoll, Sean A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Superconductivity (cond-mat.supr-con)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that a quartic contact interaction between charged fermions can lead to Cooper pairing and a superconducting instability in the background of a charged asymptotically Anti-de Sitter black hole. For a massless fermion we obtain the zero mode analytically and compute the dependence of the critical temperature T_c on the charge of the fermion. The instability we find occurs at charges above a critical value, where the fermion dispersion relation near the Fermi surface is linear. The critical temperature goes to zero as the marginal Fermi liquid is approached, together with the density of states at the Fermi surface. Besides the charge, the critical temperature is controlled by a four point function of a fermionic operator in the dual strongly coupled field theory.
description: 1+33 pages, 4 figures
Compromisso social e desenvolvimento local: desafios no financiamento da Universidade do Estado da Bahia (UNEB)
Creators: name: Brasil, Ariane Damásio
name: Oliveira, Cristiane Neves de
name: DE SOUZA, ANA CLEIDE
name: Mota Júnior, Antônio de Macêdo
Publisher: name: figshare
Year: 2021
Subjects: subject: 130304 Educational Administration, Management and Leadership
subject: FOS: Educational sciences

description: Este trabalho aborda o tema dos desafios do financiamento de uma universidade pública no que diz respeito ao seu compromisso social e contribuição para o desenvolvimento local. Desse modo, apresenta os resultados preliminares de um estudo exploratório, bibliográfico e documental, com o objetivo de analisar os desafios relacionados ao contexto do financiamento da Universidade do Estado da Bahia (UNEB) e seus possíveis impactos para o compromisso social dessa universidade, ao assumir sua missão institucional e contribuição para o desenvolvimento local das regiões onde se encontra inserida. Para tanto, foi necessário contextualizar o surgimento e a atuação dessa universidade, além de apresentar conceitos sobre compromisso social e abordar a relação entre universidade e desenvolvimento local. Os resultados destacam os possíveis impactos das restrições orçamentárias enfrentadas por essa universidade, no que se refere ao desempenho dessa instituição para com o seu compromisso social e desenvolvimento local.
Total photoproduction cross-section at very high energy
Creators: name: Godbole, R. M.
name: Grau, A
name: Pancheri, G.
name: Srivastava, Y. N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we apply to photoproduction total cross-section a model we have proposed for purely hadronic processes and which is based on QCD mini-jets and soft gluon re-summation. We compare the predictions of our model with the HERA data as well as with other models. For cosmic rays, our model predicts substantially higher cross-sections at TeV energies than models based on factorization but lower than models based on mini-jets alone, without soft gluons. We discuss the origin of this difference.
description: 13 pages, 9 figures. Accepted for publication in EPJC. Changes concern added references, clarifications of the Soft Gluon Resummation method used in the paper, and other changes requested by the Journal referee which do not change the results of the original version
A Chandra X-ray Analysis of Abell 1664: Cooling, Feedback and Star Formation in the Central Cluster Galaxy
Creators: name: Kirkpatrick, C. C.
name: McNamara, B. R.
name: Rafferty, D. A.
name: Nulsen, P. E. J.
name: Birzan, L.
name: Kazemzadeh, F.
name: Wise, M. W.
name: Gitti, M.
name: Cavagnolo, K. W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The brightest cluster galaxy (BCG) in the Abell 1664 cluster is unusually blue and is forming stars at a rate of ~ 23 M_{\sun} yr^{-1}. The BCG is located within 5 kpc of the X-ray peak, where the cooling time of 3.5x10^8 yr and entropy of 10.4 keV cm^2 are consistent with other star-forming BCGs in cooling flow clusters. The center of A1664 has an elongated, "bar-like" X-ray structure whose mass is comparable to the mass of molecular hydrogen, ~ 10^{10} M_{\sun} in the BCG. We show that this gas is unlikely to have been stripped from interloping galaxies. The cooling rate in this region is roughly consistent with the star formation rate, suggesting that the hot gas is condensing onto the BCG. We use the scaling relations of Birzan et al. 2008 to show that the AGN is underpowered compared to the central X-ray cooling luminosity by roughly a factor of three. We suggest that A1664 is experiencing rapid cooling and star formation during a low-state of an AGN feedback cycle that regulates the rates of cooling and star formation. Modeling the emission as a single temperature plasma, we find that the metallicity peaks 100 kpc from the X-ray center, resulting in a central metallicity dip. However, a multi-temperature cooling flow model improves the fit to the X-ray emission and is able to recover the expected, centrally-peaked metallicity profile.
description: 15 pages, 13 figures
Desafios e impactos do financiamento na gestão da Universidade do Estado da Bahia (UNEB)
Creators: name: Mota Júnior, Antônio de Macêdo
name: Reis, Andreia Rego da Silva
name: Damásio, Ariane Brasil
name: Oliveira, Cristiane Neves de
Publisher: name: figshare
Year: 2021
Subjects: subject: 130304 Educational Administration, Management and Leadership
subject: FOS: Educational sciences

description: O presente trabalho aborda o tema da política de financiamento das Universidades Estaduais Baianas (Ueba) e seus impactos na gestão da Universidade do Estado da Bahia (Uneb). Para tanto, este estudo apresenta resultados preliminares de um estudo exploratório, bibliográfico e documental, com o objetivo de caracterizar os desafios do financiamento na Uneb e os seus impactos na gestão dessa instituição no período de 2010 a 2013. Neste sentido, fez-se necessário realizar uma abordagem histórica acerca do surgimento das Ueba, bem como analisar a situação orçamentário-financeira da universidade investigada no período citado e os impactos em sua gestão. Além disso, este artigo investiga a importância da captação de recursos externos, como meio alternativo para complementação dos recursos públicos estaduais, diante da identificação de um quadro de restrições orçamentárias. Os resultados obtidos evidenciam um cenário desafiador para o financiamento da Uneb, sinalizando um quadro de precarização das atividades institucionais, com impactos diretos na gestão dessa Universidade.
Desafios e impactos do financiamento na gestão da Universidade do Estado da Bahia (UNEB)
Creators: name: Mota Júnior, Antônio de Macêdo
name: Reis, Andreia Rego da Silva
name: Brasil, Ariane Damásio
name: Oliveira, Cristiane Neves de
Publisher: name: figshare
Year: 2021
Subjects: subject: 130304 Educational Administration, Management and Leadership
subject: FOS: Educational sciences

description: O presente trabalho aborda o tema da política de financiamento das Universidades Estaduais Baianas (Ueba) e seus impactos na gestão da Universidade do Estado da Bahia (Uneb). Para tanto, este estudo apresenta resultados preliminares de um estudo exploratório, bibliográfico e documental, com o objetivo de caracterizar os desafios do financiamento na Uneb e os seus impactos na gestão dessa instituição no período de 2010 a 2013. Neste sentido, fez-se necessário realizar uma abordagem histórica acerca do surgimento das Ueba, bem como analisar a situação orçamentário-financeira da universidade investigada no período citado e os impactos em sua gestão. Além disso, este artigo investiga a importância da captação de recursos externos, como meio alternativo para complementação dos recursos públicos estaduais, diante da identificação de um quadro de restrições orçamentárias. Os resultados obtidos evidenciam um cenário desafiador para o financiamento da Uneb, sinalizando um quadro de precarização das atividades institucionais, com impactos diretos na gestão dessa Universidade.
Smart batch mixing
Creators: name: Awa, Kofi Ikem
Publisher: name: No Publisher Supplied
Year: 2023

description: In the field of civil, mechanical, and industrial engineering, batch mixing is the process of thoroughly combining multiple organic or inorganic ingredients into a single mixture for industrial purposes. Common applications of batch mixing include cement mixing, paint mixing, creating clay and fiber glasses, food production, etc. There are many dependent variables in batch mixing that can greatly alter the quality and behavior of certain mixtures. Some of these variables include the power and rotational speed of the mixing motor, applied torque, and the physical properties of the mixing materials such as density and dynamic viscosity. The physical properties of the mixture being operated are affected by independent variables including changes in temperature and change concentration. The consumed mixing power is affected by the input voltage potential needed to move the mixing paddle. As batch mixing has evolved, it becomes more important to develop ways to optimize and control the mixing process for different industrial mixtures. This leads to the current world of smart batch mixing. Smart batch mixing is the modern version of batch mixing with the ability to measure and optimize the results of a given mixing operation through computational and analytical methods. The main objectives of this thesis are to explore solutions to reduce peak power consumption during mixing processes, be able to measure the exact concentration of materials in a mixture in the middle of an operation, and be able to know the time it takes to mix to a certain concentration. Many in the mixing industry have addressed many concerns to reduce peak power demand in mixing processes. Peak power is the occurrence of high-power spikes during mixing operations which not only impacts the mixing but also consumes more energy and increases costs. Lowering power spikes during mixing processes will help reduce power consumption and increase energy savings. The second major dilemma is being able to measure the exact concentration, or material ratio, of a given mixture in the middle of an operation. While from pure observation it is simple to guess the concentration before the start of the operation and at the very end of the operation, however, it is difficult to measure the exact ratio of the materials combined between the initial and final points. Lastly, understanding the rate of mixing during a given time is useful to know when to mix materials under certain conditions to the desired combination. A mixing lab facility was designed and created to perform mixing operations on mostly highly viscous fluid mixtures to measure the effects of independent variables including temperature, mixture concentration, and voltage/pulse width modulation (PWM) will have on dependent variables including motor power of the mixer, the rotational speed of the mixing paddle, and the physical characteristics of the fluid mixture being operated (ex. density and dynamic viscosity).
Report on Selected Indigenous Lactic Acid Bacteria with Bacteriocinogenic and Technological Properties for Use in the Target Artisanal Foods
Creators: name: Achemchem, Fouad
name: Valero Díaz, Antonio
name: Mihoubi, Nourhene Boudhrioua
name: Cadavez, Vasco
name: Gonzales-Barron, Ursula
Publisher: name: Zenodo
Year: 2021
Subjects: Autochthonous lactic acid bacteria
Fermented milk
Cheese
Sausage
Physicochemical characteristics
Antagonistic activity

description: This report constitutes Deliverable 3.2 of the ArtiSaneFood project; and compiles the results from the antagonistic activity against pathogens of strains of lactic acid bacteria (LAB) isolated from traditional fermented products from Portugal, Spain, Morocco and Tunisia, as well as their technological ability for use in sausage and cheese/fermented milk production. In some cases, LAB strains have been characterised by their phenotypic traits.
Implementation of the SU(2) Hamiltonian Symmetry for the DMRG Algorithm
Creators: name: Alvarez, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the Density Matrix Renormalization Group (DMRG) algorithm, Hamiltonian symmetries play an important role. Using symmetries, the matrix representation of the Hamiltonian can be blocked. Diagonalizing each matrix block is more efficient than diagonalizing the original matrix. This paper explains how the the DMRG++ code has been extended to handle the non-local SU(2) symmetry in a model independent way. Improvements in CPU times compared to runs with only local symmetries are discussed for the one-orbital Hubbard model, and for a two-orbital Hubbard model for iron-based superconductors. The computational bottleneck of the algorithm and the use of shared memory parallelization are also addressed.
description: elsarticle, 1 figure
Relativistic Quantum Gravity at a Lifshitz Point
Creators: name: Germani, Cristiano
name: Kehagias, Alex
name: Sfetsos, Konstadinos
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the Horava theory for the completion of General Relativity at UV scales can be interpreted as a gauge fixed theory, and it can be extended to an invariant theory under the full group of four-dimensional diffeomorphisms. In this respect, although being fully relativistic, it results to be locally anisotropic in the time-like and space-like directions defined by a family of irrotational observers. We show that this theory propagates generically three degrees of freedom: two of them are related to the four-dimensional diffeomorphism invariant graviton (the metric) and one is related to a propagating scalar mode. Finally, we note that in the present formulation, matter can be consistently coupled to gravity.
description: v4: Erratum added: explanation on the true dynamical fields of the relativistic theory added. The theory is interpreted as a Tensor-Scalar relativistic theory. Reference added. Version accepted in JHEP
Report on the Assessment of Commercial Starter Cultures for Use in the Target Artisanal Foods
Creators: name: Achemchem, Fouad
name: Valero Díaz, Antonio
name: Mihoubi, Nourhene Boudhrioua
name: Cadavez, Vasco
name: Gonzales-Barron, Ursula
Publisher: name: Zenodo
Year: 2021
Subjects: lactic acid bacteria
antimicrobial capacity
cheese
sausage
fermented milk

description: This report constitutes Deliverable 3.1; and compiles the in-vitro antagonistic activity against pathogens of commercial starter cultures, known to have good technological properties when applied to the target traditional fermented products from Spain, Morocco and Tunisia. For selected commercial starters, their effects on the physicochemical and sensory characteristics of the artisanal end products have been evaluated, and are presented in this report.
คุณค่ากรรมวิธีการบำบัดแบบพึ่งตนเองและสำรับอาหารเพื่อสุขภาพของกลุ่มชาติพันธุออสโตรเอเชียติก : กรณีศึกษาในประเทศกัมพูชา
Creators: name: วาสนา แก้วหล้า
Publisher: name: The Office of Arts and Culture, Surindra Rajabhat University
Year: 2010
Subjects: คุณค่า
กรรมวิธี
อาหารเพื่อสุขภาพ
การพึ่งตนเอง
กลุ่มชาติพันธุ์

description: วารสารศิลปะและวัฒนธรรมลุ่มแม่น้ำมูล, 5, ปีการศึกษา 2553, 38-60
พิธีกรรมบำบัดเพื่อสุขภาพแบบองค์รวมในชุมชนตระกูลมอญ-เขมร
Creators: name: ปทุมพร อภัยจิตต์
Publisher: name: The Office of Arts and Culture, Surindra Rajabhat University
Year: 2010
Subjects: พิธีกรรมบำบัด
การดูแลสุขภาพแบบองค์รวม
ภูมิปัญญาชาวบ้าน

description: วารสารศิลปะและวัฒนธรรมลุ่มแม่น้ำมูล, 5, ปีการศึกษา 2553, 61-74
รอยไทยในสิบสองปันนา
Creators: name: ฉลอง สุขทอง
Publisher: name: The Office of Arts and Culture, Surindra Rajabhat University
Year: 2010
Subjects: -

description: วารสารศิลปะและวัฒนธรรมลุ่มแม่น้ำมูล, 5, ปีการศึกษา 2553, 76-82
ช.ช้างนำโชค
Creators: name: อัชราพร สุขทอง
Publisher: name: The Office of Arts and Culture, Surindra Rajabhat University
Year: 2010
Subjects: -

description: วารสารศิลปะและวัฒนธรรมลุ่มแม่น้ำมูล, 5, ปีการศึกษา 2553, 83-88
คีตเทพ เสียงจากสรวงสวรรค์ สู่ดนตรีบำบัด
Creators: name: กิตติพงษ์ เกิดฤทธิ์
Publisher: name: The Office of Arts and Culture, Surindra Rajabhat University
Year: 2010
Subjects: -

description: วารสารศิลปะและวัฒนธรรมลุ่มแม่น้ำมูล, 5, ปีการศึกษา 2553, 89-93
Additional file 3 of Transcriptional differentiation driving Cucumis sativus–Botrytis cinerea interactions based on the Skellam model and Bayesian networks
Creators: name: Zhang, Qi
name: Li, Kaihang
name: Yang, Yan
name: Li, Beibei
name: Jiang, Libo
name: He, Xiaoqing
name: Jin, Yi
name: Zhao, Guozhu
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Table S3. Significantly enriched KEGG pathways of DEGs in C. sativus.
มรดกอารยธรรมดองแหรก ว่าด้วยภูมิปัญญาท้องถิ่น คัมภีร์ใบลานและต้นลาน
Creators: name: ปแฏงมหาบุญเรือง คัชมาย์
Publisher: name: The Office of Arts and Culture, Surindra Rajabhat University
Year: 2010
Subjects: -

description: วารสารศิลปะและวัฒนธรรมลุ่มแม่น้ำมูล, 5, ปีการศึกษา 2553, 94-110
The ISO Long Wavelength Spectrometer line spectrum of VY Canis Majoris and other oxygen-rich evolved stars
Creators: name: Polehampton, E. T.
name: Menten, K. M.
name: van der Tak, F. F. S.
name: White, G. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The far-infrared spectra of circumstellar envelopes around various oxygen-rich stars were observed using the ISO Long Wavelength Spectrometer (LWS). We have examined high signal-to-noise ISO LWS observations of the luminous supergiant star, VY CMa, with the aim of identifying all of the spectral lines. By paying particular attention to water lines, we aim to separate the lines due to other species, in particular, to prepare for forthcoming observations that will cover the same spectral range using Herschel PACS and at higher spectral resolution using Herschel HIFI and SOFIA. We have developed a fitting method to account for blended water lines using a simple weighting scheme to distribute the flux. We have applied this approach to several other stars which we compare with VY CMa. We present line fluxes for the unblended H2O and CO lines, and present detections of several possible nu_2=1 vibrationally excited water lines. We also identify blended lines of OH, one unblended and several blended lines of NH3, and one possible detection of H3O+.
description: 15 pages, 6 figures, accepted for publication in A&A
Report on Effective Concentrations and Modes of Application of Plant Antimicrobials in Target Artisanal Foods
Creators: name: Gounadaki, Antonia
name: Moschopoulou, Georgia
name: Skandamis, Panagiotis
name: Kintzios, Spyridon
name: Valero, Antonio
name: Achemchem, Fouad
name: Mihoubi, Nourhene Boudhrioua
name: Cadavez, Vasco
name: Gonzales-Barron, Ursula
Publisher: name: Zenodo
Year: 2021
Subjects: Extracts
Essential oils
Encapsulation
MIC
Microdilution
Pathogens

description: Deliverable 4.2 summarises the results of activities performed under Tasks 4.1, 4.2 and 4.3 of the ArtiSaneFood project. D4.2 compiles the type of extracts or essential oils, their concentrations, and how they will be applied in the target artisanal foods for the conduction of the challenge studies of WP5.
Boosting Beyond: A Novel Approach to Probing Top-Philic Resonances at the LHC
Creators: name: Darmé, Luc
name: Fuks, Benjamin
name: Li, Hao-Lin
name: Maltoni, Matteo
name: Mattelaer, Olivier
name: Touchèque, Julien
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We introduce a novel search strategy for heavy top-philic resonances that induce new contributions to four-top production at the LHC. We capitalize on recent advances in top-tagging performance to demonstrate that the final state, that is expected to be boosted based on current limits, can be fully reconstructed and exploited. Notably, our approach promises bounds on new physics cross-sections that are a few to 60 times stronger than those obtained with existing searches, showcasing its unprecedented effectiveness in probing top-philic new physics.
description: 6 pages, 2 figures; version accepted by PRD
Theory of the Magnetic-Field-Induced Insulator in Neutral Graphene
Creators: name: Jung, J.
name: MacDonald, A. H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments have demonstrated that neutral graphene sheets have an insulating ground state in the presence of an external magnetic field. We report on a $π$-band tight-binding-model Hartree-Fock calculation which examines the competition between distinct candidate insulating ground states. We conclude that for graphene sheets on substrates the ground state is most likely a field-induced spin-density-wave, and that a charge density wave state is possible for suspended samples. Neither of these density-wave states support gapless edge excitations.
description: 11 pages, 7 figures
คำประกาศเกียรติคุณ วัฒนธรรมสัมพันธ์ สาขาภาษาและวรรณกรรม (ตำราวิชาการท้องถิ่นศึกษา) ประจำปีพุทธศักราช 2563
Creators: name: บุญเรือง คัชมาย์
Publisher: name: The Office of Arts and Culture, Surindra Rajabhat University
Year: 2010
Subjects: -

description: วารสารศิลปะและวัฒนธรรมลุ่มแม่น้ำมูล, 5, ปีการศึกษา 2553, 112-115
Accumulation of driver and passenger mutations during tumor progression
Creators: name: Bozic, Ivana
name: Antal, Tibor
name: Ohtsuki, Hisashi
name: Carter, Hannah
name: Kim, Dewey
name: Chen, Sining
name: Karchin, Rachel
name: Kinzler, Kenneth W.
name: Vogelstein, Bert
name: Nowak, Martin A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Major efforts to sequence cancer genomes are now occurring throughout the world. Though the emerging data from these studies are illuminating, their reconciliation with epidemiologic and clinical observations poses a major challenge. In the current study, we provide a novel mathematical model that begins to address this challenge. We model tumors as a discrete time branching process that starts with a single driver mutation and proceeds as each new driver mutation leads to a slightly increased rate of clonal expansion. Using the model, we observe tremendous variation in the rate of tumor development - providing an understanding of the heterogeneity in tumor sizes and development times that have been observed by epidemiologists and clinicians. Furthermore, the model provides a simple formula for the number of driver mutations as a function of the total number of mutations in the tumor. Finally, when applied to recent experimental data, the model allows us to calculate, for the first time, the actual selective advantage provided by typical somatic mutations in human tumors in situ. This selective advantage is surprisingly small, 0.005 +- 0.0005, and has major implications for experimental cancer research.
A sensitivity analysis to quantify the impact of fragility modelling assumptions on regional seismic risk outputs
Creators: name: Lambert, Emma Constance
Publisher: name: University of British Columbia
Year: 2024

description: Fragility functions are integral to modelling building vulnerability in regional seismic risk models. Regional seismic risk assessments are often used to inform seismic policy development, even if there is often relatively low confidence in the suitability of the underlying fragility functions. This work investigates the defensibility of using generalized fragility functions when using regional seismic risk models to inform seismic policy development. This thesis presents a methodology to objectively quantify the impact that uncertainty in the fragility function damage state medians has on the variance the resulting regional seismic risk outputs, namely, casualties, building recovery time, and number of buildings with significant damage. This is achieved by means of a variance-based sensitivity analysis. The methodology is demonstrated by implementing this framework for the City of Vancouver, using a deterministic, active crustal, M7.2 earthquake scenario to represent ground shaking hazard and evaluating 15 fragility functions selected based on their contribution to the exposure and baseline risk. The findings indicate that variance in casualties is driven by uncertainty in the fragility function medians of pre-code era buildings, constructed prior to 1973, with light frame wood, unreinforced masonry, and concrete shear wall structural systems. This is attributed to their relatively low capacity and considerable presence within the broader exposure dataset. Similarly, the variance in building recovery time and significantly damaged buildings is driven by uncertainty in the medians of low-rise unreinforced masonry structures constructed prior to 1973 and light frame wood structures constructed from between 1973 and 2004. This sensitivity is driven by the underlying probabilities of damage that occur as a result of the shifts in the median damage states. Ultimately, this methodology provides a tool to better understand which input fragility functions can reduce uncertainty in regional seismic risk outputs, which is an important consideration when leveraging regional seismic risk models to inform policy decision making.
ประวัติท้องถิ่น/ ชื่อบ้านนามเมือง : บ้านยาง
Creators: name: สุทัศน์ กองทรัพย์
Publisher: name: The Office of Arts and Culture, Surindra Rajabhat University
Year: 2010
Subjects: -

description: วารสารศิลปะและวัฒนธรรมลุ่มแม่น้ำมูล, 5, ปีการศึกษา 2553, 117-118
Structure of magnetic fields in non-convective stars
Creators: name: Lyutikov, Maxim
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: (Abridged) We develop a theoretical framework to construct axisymmetric magnetic equilibria in stars, consisting of both poloidal and toroidal magnetic field components. In a stationary axisymmetric configuration, the poloidal current is a function of the poloidal magnetic flux only, and thus should vanish on field lines extending outside of the star. Non-zero poloidal current is limited to a set of toroid-shape flux surfaces fully enclosed inside the star. If we demand that there are no current sheets, then on the separatrix delineating the regions of zero and finite toroidal magnetic field both the poloidal flux function and its derivative should match. Thus, for a given magnetic field in the bulk of the star, the elliptical Grad-Shafranov equation that describes magnetic field structure inside the toroid is an ill-posed problem, with both Dirichlet and Newman boundary conditions and {\it a priori} unknown distribution of toroidal and poloidal electric currents. We discuss a procedure which allows to solve this ill-posed problem by adjusting the unknown current functions. We find a poloidal current-carrying solution that leaves the shape of the flux function and, correspondingly, the toroidal component of the electric current the same as in the case of no poloidal current. The equilibria discussed in this paper may have arbitrary large toroidal magnetic field, and may include a set of stable equilibria. The method developed here can also be applied to magnetic structure of differentially rotating stars, as well as to calculate velocity field in incompressible isolated fluid vortex with a swirl.
description: 17 pages, 7 figures