cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
FISH FEED DEVELOPMENT FOR SUSTAINABLE AQUACULTURE FISH PRODUCTION IN AFRICA
Creators: name: George, F.O.A.
name: Otubusin, S.O.
name: George, F.O.A.
name: Otubusin, S.O.
Publisher: name: Unknown
Year: 2007
Subjects: Agribusiness

description: Combinations of three commercial digestive enzyme supplements (protease, carbohydrase and phytase) were added at the rate of 50g/kg to Fish:Soybean (50:50) meal diets to evaluate their effects on the efficiency of soybean meal as a substitute for fishmeal in practical diets for Clarias ganiepinus juveniles (9.38 + 0.04g) in a 30-day trial in in-door plastic tanks. Five diets were evaluated: T1 (control, with fishmeal (i.e. 100:0 diet) as the sole protein source without enzyme); T2 (fishmeal:soybean (50:50) without enzyme); T3 (50:50 diet supplemented with protease and carbohydrase); T4 (50:50 diet with phytase and carbohydrase) and T5 (50:50 diet with protease and phytase). The fish were fed to satiation once daily at 9.00hrs. Results showed that all treatments supported the growth of Clarias gariepinus, as mean fish weight increased from 9.38 to 21.66g during the experimental period. No mortality was recorded under all the treatments during the experiment. Average daily growth (ADG) was highest (0.45g/fish/d) in fish fed diet T3, followed by T5 (0.43); T1 (0.43); T2 (0.41) and T4 (0.33). Specific growth rate (SGR) was highest at 2.9% per day in T5, followed by T3, T1, T2 and T4 with 2.88, 2.85, 2.79 and 2.43% per day respectively. Feed conversion ratio (FCR) was lowest in T1 (1.09), followed by T5 (1.12), T3 (1.14), T2 (1.16) and T4 (1.24) respectively. Results confirmed that the use on supplementary digestive enzymes significantly improved the efficiency of soybean-based diets, suggesting that highly efficient fish diets could be produced using plant protein sources, thereby reducing the use of scarce and expensive fish-meal as protein source in fish feeds.
Magnetoelastic Coupling in the Spin-Dimer System TlCuCl$_3$
Creators: name: Johannsen, N.
name: Vasiliev, A.
name: Oosawa, A.
name: Tanaka, H.
name: Lorenz, T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present high-resolution measurements of the thermal expansion and the magnetostriction of TlCuCl$_{3}$ which shows field-induced antiferromagnetic order. We find pronounced anomalies in the field and temperature dependence of different directions of the lattice signaling a large magnetoelastic coupling. The phase boundary is extremely sensitive to pressure, e.g. the transition field would change by about +/- 185$%/GPa under uniaxial pressure applied along certain directions. This drastic effect can unambiguously be traced back to changes of the intradimer coupling under uniaxial pressure. The interdimer couplings remain essentially unchanged under pressure, but strongly change when Tl is replaced by K.
description: 4 pages with 4 figures included
Convex optimization based on global lower second-order models
Creators: name: Doikov, Nikita
name: Nesterov, Yurii
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this paper, we present new second-order algorithms for composite convex optimization, called Contracting-domain Newton methods. These algorithms are affine-invariant and based on global second-order lower approximation for the smooth component of the objective. Our approach has an interpretation both as a second-order generalization of the conditional gradient method, or as a variant of trust-region scheme. Under the assumption, that the problem domain is bounded, we prove $\mathcal{O}(1/k^{2})$ global rate of convergence in functional residual, where $k$ is the iteration counter, minimizing convex functions with Lipschitz continuous Hessian. This significantly improves the previously known bound $\mathcal{O}(1/k)$ for this type of algorithms. Additionally, we propose a stochastic extension of our method, and present computational results for solving empirical risk minimization problem.
POTENTIALS AND CHALLENGES OF COMMUNITY BANKS IN AGRIBUSINESS FINANCING FOR SMALL FARMERS IN JOS SOUTH LOCAL GOVERNMENT AREA OF PLATEAU STATE
Creators: name: Umar, A.G. Owa
name: Obiaga, P.C.
name: Nwafor, O.E.
name: Owa, O.
name: Mbah, A.
name: Akalumhe, C.
name: Maimuna, U.
name: Umar, A.G. Owa
name: Obiaga, P.C.
name: Nwafor, O.E.
name: Owa, O.
name: Mbah, A.
name: Akalumhe, C.
name: Maimuna, U.
Publisher: name: Unknown
Year: 2007
Subjects: Agricultural Finance

description: Capital is regarded as a major factor for expanding production and modernizing Agriculture. The need to provide it to farmers is inevitable because it is an instrument in fostering Agricultural development and for improving efficiency in the production process. The contemporary practice of agriculture requires capital support, which is a handicap to small farmers. A research was conducted in Jos South L.G.A to assess the effectiveness of rural credit delivery system of community banks to provide resources to poor farmers. A set of 65 data collection instruments was administered to farmers and bank officials in a multi-stage random selection technique. Descriptive statistics was adopted to analyse socio-economic characteristics of the farmers while inferential statistics was adopted to test the hypotheses of the study. Findings revealed that majority of the farmers are yet to benefit from community banks (88%). The result of the hypotheses test indicates that information gap, inadequate and timely supply of inputs of production, time of loan disbursement, value of loan package are all statistically significant to sourcing of credit from the bank by farmers. It is recommended that farmer friendly banking policy be adopted to encourage farmers to patronize community banks.
Quasi-Periodic Parallel WaveGAN: A Non-autoregressive Raw Waveform Generative Model with Pitch-dependent Dilated Convolution Neural Network
Creators: name: Wu, Yi-Chiao
name: Hayashi, Tomoki
name: Okamoto, Takuma
name: Kawai, Hisashi
name: Toda, Tomoki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this paper, we propose a quasi-periodic parallel WaveGAN (QPPWG) waveform generative model, which applies a quasi-periodic (QP) structure to a parallel WaveGAN (PWG) model using pitch-dependent dilated convolution networks (PDCNNs). PWG is a small-footprint GAN-based raw waveform generative model, whose generation time is much faster than real time because of its compact model and non-autoregressive (non-AR) and non-causal mechanisms. Although PWG achieves high-fidelity speech generation, the generic and simple network architecture lacks pitch controllability for an unseen auxiliary fundamental frequency ($F_{0}$) feature such as a scaled $F_{0}$. To improve the pitch controllability and speech modeling capability, we apply a QP structure with PDCNNs to PWG, which introduces pitch information to the network by dynamically changing the network architecture corresponding to the auxiliary $F_{0}$ feature. Both objective and subjective experimental results show that QPPWG outperforms PWG when the auxiliary $F_{0}$ feature is scaled. Moreover, analyses of the intermediate outputs of QPPWG also show better tractability and interpretability of QPPWG, which respectively models spectral and excitation-like signals using the cascaded fixed and adaptive blocks of the QP structure.
description: 15 pages, 10 figures, 8 tables
Inhomogeneity-Induced Cosmic Acceleration in a Dust Universe
Creators: name: Chuang, Chia-Hsun
name: Gu, Je-An
name: Hwang, W-Y. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is the common consensus that the expansion of a universe always slows down if the gravity provided by the energy sources therein is attractive and accordingly one needs to invoke dark energy as a source of anti-gravity for understanding the cosmic acceleration. To examine this point we find counter-examples for a spherically symmetric dust fluid described by the Lemaitre-Tolman-Bondi solution without singularity. Thus, the validity of this naive consensus is indeed doubtful and the effects of inhomogeneities should be restudied. These counter-intuitive examples open a new perspective on the understanding of the evolution of our universe.
description: 41 pages, 12 figures, 4 tables; final version for publication
title: Bronchoscopist-Directed Continuous Flow Propofol Based Analgosedation during Flexible Interventional Bronchoscopy and EBUS
Creators: name: Evers, Georg Heribert
name: Mohr, Michael
name: Sprakel, Lena
name: Galonska, Jule
name: Görlich, Dennis
name: Schulze, Arik Bernard
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2024
Subjects: subject: 610 Medicine and health

description: Sedation techniques in interventional flexible bronchoscopy and endobronchial ultrasound-guided transbronchial-needle aspiration (EBUS-TBNA) are inconsistent and the evidence for required general anesthesia under full anesthesiologic involvement is scarce. Moreover, we faced the challenge of providing bronchoscopic care with limited personnel. Hence, we retrospectively identified 513 patients that underwent flexible interventional bronchoscopy and/or EBUS-TBNA out of our institution between January 2020 and August 2022 to evaluate our deep analgosedation approach based on pethidine/meperidine bolus plus continuous flow adjusted propofol, the bronchoscopist-directed continuous flow propofol based analgosedation (BDcfP) in a two-personnel setting. Consequently, 502 out of 513 patients received BDcfP for analgosedation. We identified cardiovascular comorbidities, chronic obstructive pulmonary disease, and arterial hypertension as risk factors for periprocedural hypotension. Propofol flow rate did not correlate with hypotension. Theodrenaline and cafedrine might be used to treat periprocedural hypotension. Moreover, midazolam might be used to support the sedative effect. In conclusion, BDcfP is a safe and feasible sedative approach during interventional flexible bronchoscopy and EBUS-TBNA. In general, after the implementation of safety measures, EBUS-TBNA and interventional flexible bronchoscopy via BDcfP might safely be performed even with limited personnel.
description: Finanziert durch den Open-Access-Publikationsfonds der Universität Münster.
Project history as a group memory : learning from the past
Creators: name: Cubranic, Davor
Publisher: name: University of British Columbia
Year: 2009

description: New members of software development teams must come up-to-speed on a large amount of information before becoming productive, even if they have previous software development experience. Often, this knowledge is gained through mentoring: an experienced colleague monitors the newcomer's progress on his or her first assigned tasks, and provides feedback and advice. The mentor is the person the newcomer turns to for help when stuck; these interactions are typically informal and lightweight, such as quick questions asked over the cubicle divider or at the water cooler. However, these light-weight channels are not always available in virtual teams, where the members of the team are not collocated. Moreover, workers are less likely to help their non-collocated colleagues, making it even harder for a newcomer to come up to speed on a project. The thesis of this dissertation is based on the idea that the collection of all artifacts created in the course of development of a software system implicitly forms a group memory—a repository of information that a work group can use to benefit from its past experience to respond more effectively to the present needs. I call this implicitly-formed group memory a project memory and make three claims: (1) that newcomer software developers can use information from the project memory about past modifications completed on the project to help them effectively perform modification tasks to the system; (2) that the project memory can be built largely automatically, requiring minimal adjustments in work practices of software developers; and (3) that the automatically-built group memory can recommend artifacts useful to the current modification task. To validate the claims of this thesis, I have developed a project memory model and associated tool, called Hipikat, that recommends relevant artifacts from the memory during a software modification task. This dissertation describes the memory model, the implementation of Hipikat, and its use in a series of case studies to validate the thesis claims.
INTEGRAL spectroscopy of the accreting millisecond pulsar XTE J1807-294 in outburst
Creators: name: Falanga, M.
name: Bonnet-Bidaud, J. M.
name: Poutanen, J.
name: Farinelli, R.
name: Martocchia, A.
name: Goldoni, P.
name: Qu, J. L.
name: Kuiper, L.
name: Goldwurm, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The fourth transient accreting millisecond pulsar XTE J1807-294 was observed during its February/March 2003 outburst by INTEGRAL, partly simultaneously with the XMM-Newton and RXTE satellites. We present here the first study of the 0.5-200 keV broad-band spectra of the source. On February 28, the source spectrum was consistent with thermal Comptonization by electrons of temperature \~40 keV, considerably larger than the value (~10 keV) previously derived from the low energy XMM-Newton data alone. The source is detected by INTEGRAL up to 200 keV with a luminosity in the energy band (0.1-200) keV of 1.3 x 10E37 erg/s (assuming a distance of 8 kpc). 22 days later the luminosity dropped to 3.6 x 10E36 erg/s. A re-analysis of XMM-Newton data yields the orbital Doppler variations of the pulse period and refines the previous ephemeris. For this source having shortest orbital period of any known binary radio or X-ray millisecond pulsar, we constrain the companion mass Mc < 0.022 Msun, assuming minimum mass transfer driven by gravitational radiation. Only evolved dwarfs with a C/O composition are consistent with the Roche lobe and gravitational radiation constraints, while He dwarfs require an unlikely low inclination.
description: accepted for publication on A&A, 7 pages, 7 figures
Measurement of $K^+ \to π^0 π^0 e^+ ν$ ($K_{e4}^{00}$) decay using stopped positive kaons
Creators: name: Shimizu, S.
name: Horie, K.
name: Aliev, M.
name: Asano, Y.
name: Baker, T.
name: Depommier, P.
name: Hasinoff, M.
name: Igarashi, Y.
name: Imazato, J.
name: Ivashkin, A. P.
name: Khabibullin, M. M.
name: Khotjantsev, A. N.
name: Kudenko, Y. G.
name: Levchenko, A.
name: Lim, G. Y.
name: Macdonald, J. A.
name: Mineev, O. V.
name: Rangacharyulu, C.
name: Sawada, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The $K^+ \to π^0 π^0 e^+ ν$ ($K_{e4}^{00}$) decay has been measured with stopped positive kaons for a data sample of 216 events. A comparison of the observed spectra with a Monte Carlo simulation determined the $K_{e4}^{00}$ form factor. The results are compatible with the $K^+ \to π^+ π^- e^+ ν$ data, as estimated from the $ΔI=1/2$ rule. We also established that the $K_{e4}^{00}$ channel can be used to determine the $π$-$π$ scattering lengths.
description: about 10 pages, 3figures
GENDER PARTICIPATION IN CASSAVA PROCESSING ACTIVITIES IN AYETORO AREA OF OGUN STATE
Creators: name: Fapojuwo, O.E.
name: Fapojuwo, O.E.
Publisher: name: Unknown
Year: 2007
Subjects: Crop Production/Industries

description: The research investigated gender participation in cassava processing activities in Ayetoro area of Ogun State. Cassava is a staple food in Nigeria generally processed into “gari”, “lafun” and “fufu”. Male and female processors participate in the various processing activities with the use of different processing techniques. Purposive and random sampling techniques were adopted for the study. Four villages were chosen and 240 respondents comprising of male and female processors in “gari”, “lafun” and “fufu” processing. The data were analyzed using both percentage distribution and analysis of variance. The study reveals that 37.5% of male processors were between 41-50 years while 30.6% of female processor was between 31 – 40 years. Majority (60.4%) of female processors were Christians while (50.0%) of the male processors were Muslim. The household size of most of male processors (50.0%) ranges between 6-10 members while that of 56.9% of female processors range between 1 -5 members. The study further shows that 40.0% of female processors had no formal education compared to only 18.8% of their male counterpart. The evidence from the study concludes that at p =0.05, there are significance difference between gender participation and their ages (F=3.73, p=0.05), religion (F=4.167, p=0.044), household size (F=4.454, p=0.037) and sources of cassava (F=12.17, p=0.001). Also, significant difference exist between the attitude of male and female participating in cassava processing activities about the need for men’s strength (F=9.79, p=0.002), the availability of time on men’s part (F=5.01, p=0.03). However, no significant difference exists between male and female participation based on constraints faced with different processing techniques they are using. Finally, it is recommended that there is the need to motivate male participation in cassava processing activities, and that processing of agricultural products should not be seen as female job alone.
Wireless Information and Power Transfer for IoT Applications in Overlay Cognitive Radio Networks
Creators: name: Gurjar, Devendra Singh
name: Nguyen, Ha H.
name: Tuan, Hoang D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper proposes and investigates an overlay spectrum sharing system in conjunction with the simultaneous wireless information and power transfer (SWIPT) to enable communications for the Internet of Things (IoT) applications. Considered is a cooperative cognitive radio network, where two IoT devices (IoDs) exchange their information and also provide relay assistance to a pair of primary users (PUs). Different from most existing works, in this paper, both IoDs can harvest energy from the radio-frequency (RF) signals received from the PUs. By utilizing the harvested energy, they provide relay cooperation to PUs and realize their own communications. For harvesting energy, a time-switching (TS) based approach is adopted at both IoDs. With the proposed scheme, one round of bidirectional information exchange for both primary and IoT systems is performed in four phases, i.e., one energy harvesting (EH) phase and three information processing (IP) phases. Both IoDs rely on the decode-and-forward operation to facilitate relaying, whereas the PUs employ selection combining (SC) technique. For investigating the performance of the considered network, this paper first provides exact expressions of user outage probability (OP) for the primary and IoT systems under Nakagami-m fading. Then, by utilizing the expressions of user OP, the system throughput and energy efficiency are quantified together with the average end-to-end transmission time. Numerical and simulation results are provided to give useful insights into the system behavior and to highlight the impact of various system/channel parameters.
description: 12 figures, 14 pages
ECONOMIC ANALYSIS OF BROILER PRODUCTION AT MIANGO PLATEAU STATE, NIGERIA
Creators: name: Kalla, D.J.U.
name: Barrier, G.
name: Haruna, U.
name: Abubakar, Mukhtar Aishatu
name: Hamidu, B.M.
name: Murtala, N.
name: Kalla, D.J.U.
name: Barrier, G.
name: Haruna, U.
name: Abubakar, Mukhtar Aishatu
name: Hamidu, B.M.
name: Murtala, N.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Livestock Production/Industries
subject: Broilers
subject: Income
subject: Investment & Profitability

description: This paper evaluate the economics of broiler production at Miango, Plateau State, Nigeria using a – 9 years record (1992 – 2000). During the period, 76 batches of broilers were reared to point of slaughter. The results shows that the enterprise incurred an average total variable cost of N620,6333.31 out of which feeding cost, day old chicks (stock) and mortality cost represents 58.13%, 19.13% and of 9.64% of the total cost of production, respectively. Total revenue within the period was estimated to be N763,969.44 which was mainly generated from the sales of broiler birds. The gross margin was found to be N143,334.13 with N0.23 as the returns per naira invested in the enterprise. Thus the broiler production is a profitable venture in the study area.
title: Επίδραση του είδους των θερμαντικών μέσων στην ενεργειακή ζήτηση των κτιρίων
title: Effect of the type of heating media on buildings energy demand
titleType: AlternativeTitle
Creators: name: Κωνσταντόπουλος, Αναστάσιος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Θερμαντικά μέσα
Energy Plus
Ενεργειακή ζήτηση
Κτήρια
Θερμικές απώλειες
Καλοριφέρ
Μόνωση
Fan coil
Θερμαντικά σώματα
Αντλίες θερμότητας

description: Στην παρούσα διπλωματική εργασία παρουσιάζονται οι μέθοδοι θέρμανσης των χώρων ενός κτιρίου καθώς και η αξιολόγηση τους σύμφωνα με τον τρόπο μετάδοσης της θερμότητας και την διαφοροποιημένη ζήτηση ενέργειας της κάθε μιας για κάλυψη των ίδιων ενεργειακών απωλειών. Αναφέρονται οι κατηγορίες των θερμαντικών μέσων (ΘΜ) και πιο ειδικότερα τα χαρακτηριστικά των θερμαντικών μέσων στον τρόπο θέρμανσης των χώρων. Πραγματοποιείται αναλυτική μελέτη της ενεργειακής ζήτησης ενός κτιρίου σύμφωνα με την ανάλυση των θερμικών απωλειών. Αναλύεται η διαφοροποίηση της ενεργειακής ζήτησης σύμφωνα με τον τύπο των θερμαντικών μέσων (ΘΜ) και παρουσιάζονται οι ποσοτικοί υπολογισμοί των θερμικών απωλειών. Τέλος παρουσιάζεται η μεθοδολογία της μοντελοποίησης που ακολουθείται, η οποία χρησιμοποιεί το πρόγραμμα προσομοίωσης Energy-Plus, το οποίο χάρη στις δυνατότητες που έχει για εισαγωγή δεδομένων μπορεί να δίνει ικανοποιητικά αποτελέσματα για την ενεργειακή ζήτηση των θερμαντικών μέσων ενός κτιρίου . Επομένως με τη βοήθεια του Energy-Plus μπορούμε να συγκρίνουμε τα θερμαντικά σώματα καλοριφέρ με αυτά των σωμάτων ανεμιστήρα-στοιχείου (Fan Coil), μέσω της προσομοίωσης και να υπολογίσουμε την ενεργειακή ζήτηση του κτιρίου, ώστε να καταλήξουμε στα συμπεράσματα για τους παράγοντες που επηρεάζουν την επίδοση του κάθε θερμαντικού μέσου. Βρήκαμε ότι ο σημαντικότερος παράγοντας που επηρεάζει την ενεργειακή ζήτηση των κτιρίων είναι η μόνωση του κτιρίου. Συμπερασματικά, και όπως προέκυψε από προσομοιώσεις που πραγματοποιήσαμε σε τυπικό κτίριο, η ζήτηση μπορεί να διαφοροποιείται σημαντικά (έως 20%) όταν το ποσοστό ακτινοβολούμενης θερμότητας από τα θερμαντικά σώματα μεταβάλλεται από 0 σε 100%. Η κατανομή των απωλειών σε αερισμό και διαφυγή μέσω του κελύφους επηρεάζει σημαντικά το παραπάνω ποσοστό διαφοροποίησης.
Decay constants of the pseudoscalar charmonium and bottomonium
Creators: name: Wang, Zhi-Gang
name: Yang, Wei-Min
name: Wan, Shao-Long
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this article, we investigate the structures of the pseudoscalar charmonium and bottomonium in the framework of the coupled rainbow Schwinger-Dyson equation and ladder Bethe-Salpeter equation with the confining effective potential (infrared modified flat bottom potential). As the current masses are very large, the dressing or renormalization for the $c$ and $b$ quarks are tender, however, mass poles in the timelike region are absent. The Euclidean time fourier transformed quark propagator has no mass poles in the timelike region which naturally implements confinement. The Bethe-Salpeter wavefunctions for those mesons have the same type (Gaussian type) momentum dependence and center around zero momentum with spatial extension to about $q^2=1GeV^2$ which happen to be the energy scale for Chiral symmetry breaking, the strong interactions in the infrared region result in bound states. The decay constants for those pseudoscalar heavy quarkonia are compatible with the values of experimental extractions and theoretical calculations.
description: 12 pages, 1 figure; Revised version
Dynamics of the Parker-Jeans instability of gaseous disks including the effect of cosmic rays
Creators: name: Kuwabara, Takuhito
name: Ko, Chung Ming
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The effect of cosmic rays on the Parker-Jeans instability in magnetized self-gravitating gaseous disks is studied by three-dimensional magnetohydrodynamic (MHD) simulations with cosmic rays taken as a massless fluid with notable pressure. Cosmic ray diffusion along the magnetic field is taken into account in the simulation. The initial configuration of the disk is a magnetized cold gas slab sandwiched between hot corona (on top and bottom). We show that cosmic rays play an important role in the formation of filaments or clumps in some parameter regimes. In a certain range of the thickness of the gas slab, the cosmic ray diffusion coefficient plays a decisive role in determining whether the filaments lie along or perpendicular to the magnetic field. We also consider the effect of rotation on the system.
Fourier Mukai Transforms and Applications to String Theory
Creators: name: Andreas, Bjorn
name: Ruiperez, Daniel Hernandez
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14J60, 14J32, 18E30, 81T30, 83E30

description: We give an introductory review of Fourier-Mukai transforms and their application to various aspects of moduli problems, string theory and mirror symmetry. We develop the necessary mathematical background for Fourier-Mukai transforms such as aspects of derived categories and integral functors as well as their relative version which becomes important for making precise the notion of fiberwise T-duality on elliptic Calabi-Yau threefolds. We discuss various applications of the Fourier-Mukai transform to D-branes on Calabi-Yau manifolds as well as homological mirror symmetry and the construction of vector bundles for heterotic string theory.
description: 52 pages. To appear in Rev. R. Acad. Cienc. Exactas Fis. Nat. Ser. A Mat. Minor changes, reference of conjecture in section 7.5 changed, references updated
AFRICA REGIONAL INTEGRATION AND CHALLENGES OF GLOBALISATION: A REVIEW OF THE NEW PARTNERSHIP FOR AFRICA DEVELOPMENT (NEPAD)
Creators: name: Evbuomwan, G.O.
name: Evbuomwan, G.O.
Publisher: name: Unknown
Year: 2007
Subjects: International Development
International Relations/Trade

description: Essentially, globalization has meant different things to different people. Some view it as a beneficial process, with potential to boost productivity and living standards everywhere. Others believe that it increases inequality within and between countries, threatens employment and living standards, and thwarts social progress. The opportunities are no doubt many: global markets; exposure to new ideas, technology and products; economies of scale in production; gains in efficiency in the utilization of productive resources; greater specialization between nations; better quality products and wide option for consumers; increased competitiveness and increased output; and ability to tap cheaper sources of finance internationally. But most developing countries, especially the poorer countries, have very weak capacities to take advantage of a global market. The governments of African countries need to embrace globalization in the full awareness of these opportunities as well as the attendant risks. Developing, and operating within the framework of, strong regional and sub-regional economic groupings are one desirable response to the powerful forces of globalization. Such groupings should, however, be predicated on competitive production and investment. Regional integration will enable African countries to establish joint large-scale efficient and competitive enterprises and regional infrastructures. But then, to make regional integration an effective vehicle for beneficial integration within the world economy, African countries must overcome the perennial problem of lack of political will to integrate, and work towards greater institutional and economic policy convergence. It is only in this context that the new Initiatives – African Union and New Partnership for African development (NEPAD) – will make the desired impact.
QNEC2 in deformed holographic CFTs
Creators: name: Ecker, C.
name: Grumiller, D.
name: Soltanpanahi, H.
name: Stanzer, P.
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: We use the quantum null energy condition in strongly coupled two-dimensional field theories (QNEC2) as diagnostic tool to study a variety of phase structures, including crossover, second and first order phase transitions. We find a universal QNEC2 constraint for first order phase transitions with kinked entanglement entropy and discuss in general the relation between the QNEC2-inequality and monotonicity of the Casini-Huerta c-function. We then focus on a specific example, the holographic dual of which is modelled by three-dimensional Einstein gravity plus a massive scalar field with one free parameter in the self-interaction potential. We study translation invariant stationary states dual to domain walls and black branes. Depending on the value of the free parameter we find crossover, second and first order phase transitions between such states, and the c-function either flows to zero or to a finite value in the infrared. Strikingly, evaluating QNEC2 for ground state solutions allows to predict the existence of phase transitions at finite temperature.
description: 55pp, 18 figs; v2: added reference; v3: major revision: added clarifying remarks, corrected critical exponent in section 4, and added table 1 with data showing the universality of the critical exponent (4.6)
SMALL-SCALE, WOOD BASED PROCESSING ENTERPRISES; THEIR CHARACTERISTICS AND IMPACT ON PEOPLE OF AKURE LOCAL GOVERNMENT AREA OF ONDO STATE
Creators: name: Adedokun, M.O.
name: Aina Oyun, A.B.
name: Aina, O.M.
name: Adetogun, A.C.
name: Adedokun, M.O.
name: Aina Oyun, A.B.
name: Aina, O.M.
name: Adetogun, A.C.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agribusiness
subject: small-scale
subject: wood-based
subject: enterprises
subject: impact

description: A survey was conducted in Akure Local Government Area of Ondo State to give preliminary information on the magnitude, characteristics and contribution to rural employment of small-scale, wood-based processing enterprises through structured questionnaire. Small scale, wood based enterprise accounts for about 44% of the total rural labour force. The enterprises are characterized by very small size, heavy reliance on entrepreneur and family labour, technological simplicity of operations and rural location bias. Furniture, logging and carpentry were found to be the commonest among the small scale, wood-based enterprises. A range of problems facing small scale, wood-based enterprises was identified and a number of solutions were suggested. It was recommended that there should be removal of various discrimination through policies which might go a long way to ensuring a healthier small-scale, enterprise growth, reduction or removal of subsidies and other privileges currently offered the large enterprises rather than extending these support and incentives to small ones, a number of specific policy changes to increase access to market, reduce raw material and financial problems should be effected, and small-scale enterprise should be organized into groupings so as to benefit from policy changes.
STIMULATING GROWTH AND MINIMIZING RISK IN AGRICULTURAL LENDING UNDER THE AGRICULTURAL CREDIT GUARANTEE SCHEME FUND (ACGSF) IN BAUCHI STATE, NIGERIA
Creators: name: Nasiru, M.
name: Jibril, S.A.
name: Sani, R.M.
name: Sabo, A.M.
name: Nasiru, M.
name: Jibril, S.A.
name: Sani, R.M.
name: Sabo, A.M.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural Finance
subject: Growth
subject: risk
subject: agriculture
subject: credit

description: This study examined the impact of ACGSF in stimulating growth and minimizing of risk in Agricultural lending in Bauchi State. Forty three (43) farmers were randomly sampled and data collected through the use of structured questionnaire. Data were analyzed using descriptive statistics, correlation and multiple regression analysis. The results showed that farmers farm size increased considerably (P>0. 001) after taking the loan and the farm in come also increased (P<0. 001) after taking the loan for an average of two seasons. The results also showed that the educational level of the farmers does not affect loan amount directly even though there is strong positive correlation between the level of farmers’ education and their ability to meaningfully utilize the credit facility. It further showed that 37.21% of the respondents were given between were given between N 25,000.00 and N 50,000.00 as loan. The major constraints identified with the scheme include cumbersome procedures in processing the loan insufficient loan amount and late approval of the loan. Based on these findings, it was suggested that the scheme should do more to ease the constraints farmers faced, so as to achieve the objective of the scheme.
On the Experimental Identification of Spin-Parities and Single-Particle Configurations in $^{257}$No and Its $α$-Decay Daughter $^{253}$Fm
Creators: name: Chowdhury, P. Roy
name: Basu, D. N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recently measured lifetimes of the favored $α$ decays from $^{257}$No have been calculated using the quantum mechanical tunneling within WKB approximation using microscopic nuclear potentials. Results obtained assuming previously assigned (ambiguous) parent spin of $\frac{7^+}{2}$ and newly assigned configuration $\frac{3^+}{2}$ [622] have been compared. Hindrance factors for the favored decays have also been compared with the calculated hindrances using higher angular momenta transfers. Although the calculations substantiate the findings, yet it makes the spin-parity assignment of $\frac{3^+}{2}$ for the ground state of $^{257}$No less definite.
description: 3 pages
SURVEY OF SOIL MICRO-ARTHROPODS IN SELECTED SITES IN OGUN STATE
Creators: name: Oke, O.A.
name: Adejuyigbe, C.O.
name: Ajede, O.A.
name: Oke, O.A.
name: Adejuyigbe, C.O.
name: Ajede, O.A.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Crop Production/Industries
subject: Microarthropods
subject: arachnida
subject: acarina
subject: soil physico-chemical properties

description: A survey of the soil fauna of selected farm locations in Ogun State was conducted. The study was carried out at the school farm of the University of Agriculture, Alabata, Abeokuta; the School garden of the Baptist Girls` College, Idi-Aba, Abeokuta; a Farmland at Ewekoro, the Rubber plantation, Ikenne. All sites are in Ogun State. Microarthropods encountered during the survey of the sites considered belong to Class Arachnida, order Acarina, Suborders Oribatida, x = 36.50; Actinedida x = 1.00 and Gamasida; x = 2.25 and class insecta, order Collembola, x = 0.75. The rubber plantation was found to have the highest population of all these Microarthropods x = 24.75 while the school farm of the University of Agriculture, Abeokuta recorded the least population containing species of Suborder Oribatida x = 1.75 only. The school garden of Baptist Girls` College, Idi-Aba, Abeokuta x = 11.75 and the Farmland at the Cement Factory area, Ewekoro x = 3.75. The result of the physico-chemical analysis of the soil conducted indicated the influence of soil properties on the distribution of these microarthropods, also, different farm practices.
Lorentz-invariant Bell's inequality
Creators: name: Kim, Won Tae
name: Son, Edwin J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study Bell's inequality in relation to the Einstein-Podolsky-Rosen paradox in the relativistic regime. For this purpose, a relativistically invariant observable is used in the calculation of the Bell's inequality, which results in the maximally violated Bell's inequality in any reference frames.
description: 7 pages, no figures, REVTeX4; v2. version to appear in Phys. Rev. A
title: Post-digital audience engagement activity in and across visual arts and publishing
Creators: name: Preston, Louisa
Publisher: name: University of St Andrews
Year: 2019

description: This thesis conceptualises post-digital audience engagement activity in activity settings across visual arts and publishing. The research question is: how is audience engagement activity understood in and across publishing and the visual arts in the post-digital age? The central argument this thesis makes is that in the post-digital age relationships between the audience (and conceptualisations thereof) and cultural/sector organisations are undergoing a degree of transformation. Additionally, activities in the publishing industry have become significant to other areas of the creative industries, as media has begun to converge in the post-digital age. Greater understanding of audience engagement activity in this wider context bears significance for the potential roles and expanded activities that publishers can undertake. This thesis explains the dynamics of post-digital audience engagement activity undertaken in the visual arts and publishing. Post-digital audience engagement activity is motivated towards expanding audiences, creating new relationships with audiences and developing new playful transactions. Events have a key role in expanding audiences, generating participation and transformations of activity. Other key features of post-digital audience engagement are digital tools which interact with other analogue instruments of engagement and gamification and playful features of activity drawn from games development practice. Taking a practice-based studies approach, this research used Cultural Historical Activity Theory. The research methodology adopted a mixture of research strategies drawn from ethnography and case study research. An adaptation to the case study strategy of activity settings was used relating to the challenge of demarcating boundaries of a case while adopting a practice ontology. Qualitative data in the form of semi-structured interviews, observational fieldnotes, documents and images form the data sets for this research in three activity settings of publishing, national art collections and contemporary art. Organisations which are central to these activity settings are Publishing Scotland, National Galleries of Scotland and Dundee Contemporary Arts.
State preparation and measurement in a quantum simulation of the O(3) sigma model
Creators: name: Buser, Alexander J.
name: Bhattacharya, Tanmoy
name: Cincio, Lukasz
name: Gupta, Rajan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Recently, Singh and Chandrasekharan showed that fixed points of the non-linear O(3) sigma model can be reproduced near a quantum phase transition of a spin model with just two qubits per lattice site. In a paper by the NuQS collaboration, the proposal is made to simulate such field theories on a quantum computer using the universal properties of a similar model. In this paper, following that direction, we demonstrate how to prepare the ground state of the model from and measure a dynamical quantity of interest, the O(3) Noether charge, on a quantum computer. In particular, we apply Trotter methods to obtain results for the complexity of adiabatic ground state preparation in both the weak-coupling and quantum-critical regimes and use shadow tomography to measure the dynamics of local observables. We then present and analyze a quantum algorithm based on non-unitary randomized simulation methods that may yield an approach suitable for intermediate-term noisy quantum devices.
description: 14 pages, 11 figures. Rev. 3: Corrected typos, updated title, revised abstract and introduction
Design and analysis of a connected dominating set algorithm for mobile ad hoc networks
Creators: name: Cai, Kan
Publisher: name: University of British Columbia
Year: 2009

description: Wireless technology such as IEEE 802.11b allows a set of devices to communicate with each other in a peer-to-peer manner by dynamically forming mobile ad hoc networks. Routing in such networks is challenging due to node mobility, low power, constrained bandwidth and limited radio range. Most of the previous works are based on strategies that combine flooding and caching to discover routes proactively or on demand. But these algorithms suffer from scalability problems when there exist many spontaneous and short-term connections. This thesis describes the design and implementation of a backbone routing scheme, DCDS, which is inspired by the previous CDS and DSR algorithms. Like other CDS algorithms, it constructs and proactively maintains a backbone across the network; like DSR, it discovers routes on-demand and uses source routing. However, DCDS makes significant improvements on each of the algorithms on which it is based. It differs from the previous CDS work in that three key assumptions have been removed to make DCDS truly deployable in an IEEE 802.11 network: reliable broadcast, accurate neighbouring information, and a static setup phase. It differs from DSR in that route discovery is restricted to the backbone instead of flooding the entire network and data packets are delivered via multiple paths on the backbone. We have implemented the DCDS algorithm and simulated it using Glomosim. The evaluations clearly show that DCDS achieves significantly better scalability than DSR in a moderately dense network with reasonable mobility settings.
AN ASSESSMENT OF URBAN AGRICULTURAL LAND USE CHANGES USING GEOSPATIAL INFORMATION SYSTEM: A CASE STUDY OF JOS-BUKURU
Creators: name: Omomoh, E.
name: Adeofun, C.O.
name: Omomoh, E.
name: Adeofun, C.O.
Publisher: name: Unknown
Year: 2005
Subjects: Land Economics/Use

description: The urban agricultural land use change of Jos-Bukuru between 1961 and 2002 is assessed. The aim is to generate relevant, accurate and timely data that would enhance the quality of decisions and actions in an attempt to ensure the survival, expansion and the sustainability of urban agricultural land use. A geospatial information system approach was adopted in the mapping and assessment of urban agricultural land use change in the study area Topographic map of Jos-Bukuru urban at the scale of 1:50000, Landsat TM image of 1986 and 2002 with spatial resolution of 30m, among others. Data conversion, digitizing, editing, analysis was carried out using ILWIS 3.2 and Arc-View 3.2 software. The study reveals among others that agricultural land use increased substantially between 1961 and 1986. However, between 1986 and 2002, about 63% of agricultural land was lost. Out of this, about 68% was lost to urban development. The percentage increase in urban in urban expansion was 3.5% from 1961 to 1986 and 3.8% from 1986 to 2002. While the percentage in urban agricultural land use between 1986 and 2002 was 3.9%. Overall, while urban spatial expansion is increasing agricultural land use is decreasing. The study recommends among others that urban agricultural land use should be made a legitimate in urban expansion planning; specific agricultural practices should be zoned to specific locations within the city; and, that urban farming should be incorporated into the poverty alleviation programme of the Federal government
RE-EXPLORING THE POTENTIALITY OF BIM: INCORPORATING BIM INTO THE MULTI-DISCIPLINARY EDUCATIONAL SETUP
Creators: name: Abdalla, Salem Buhashima
Publisher: name: figshare
Year: 2020
Subjects: subject: 120101 Architectural Design
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 120105 Architecture Management
subject: FOS: Civil engineering
subject: 120201 Building Construction Management and Project Planning

description: Abstract - This study is an attempt to incorporate Building Information Modeling (BIM) into the engineering curriculum, particularly for the College of Engineering at the University of Sharjah, UAE. A multidisciplinary team consists of engineering students, representing four departments, Architectural Engineering (AE), Civil and Environmental Engineering (CEE), Mechanical Engineering (ME), and Electrical Engineering (EE) was formed to model and work collaboratively on a common digital model. To achieve the objectives, the team-members were educated about BIM through series of lectures, workshops, conducting case studies and participating in practical training. The findings showed great interest among students to work collaboratively on a common model and enjoy the positive experience with BIM. However, the most significant obstacles to incorporate BIM into the engineering curriculum are those already missioned in several existing literatures including teaching methodology and associated logistics. Thus, to overcome such obstacles, a BIM workshop for aforementioned engineering domains is suggested prior to fully incorporate the interdisciplinary approach within the engineering curriculum.
Phase Diagram of the Square-Lattice Three-State Potts Antiferromagnet with Staggered Polarization Field
Creators: name: Otsuka, Hiromi
name: Okabe, Yutaka
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a square-lattice three-state Potts antiferromagnet with a staggered polarization field at finite temperature. Numerically treating the transfer matrices, we determine two phase boundaries separating the model-parameter space into three parts. We confirm that one of them belongs to the ferromagnetic three-state Potts criticality, which is in accord with a recent prediction, and another to the Ising type; these are both corresponding to the massless renormalization-group flows stemming from the Gaussian fixed points. We also discuss a field theory to describe the latter Ising transition.
description: 4 pages, 2 figures
Effects of Generic Advertisement on Demand: The Case of the Washington State Apple Commission
Creators: name: Wilmot, Erin
name: Chouinard, Hayley H.
name: Yoder, Jonathan K.
name: Schotzko, R. Thomas
name: Wilmot, Erin
name: Chouinard, Hayley H.
name: Yoder, Jonathan K.
name: Schotzko, R. Thomas
Publisher: name: Unknown
Year: 2008
Subjects: Demand and Price Analysis

description: The Washington Apple Commission (WAC) generically promoted apples for the Washington state industry from 1937 until 2003. This paper provides an analysis of the effects on demand attributable to these activities. Demand movement associated with promotion tends to be positive, though the results are mixed. Overall, WAC promotion increased growers’ total revenue by approximately $53.4 million for 2002. The estimated average return to advertising topped $8.7 per dollar of advertising. Continuing selected promotional activities could increase revenue for growers if these activities could be carried out by voluntary, coordinated efforts.