cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Radius Stabilization by Two-Loop Casimir Energy
Creators: name: von Gersdorff, Gero
name: Hebecker, Arthur
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is well known that the Casimir energy of bulk fields induces a non-trivial potential for the compactification radius of higher-dimensional field theories. On dimensional grounds, the 1-loop potential is ~ 1/R^4. Since the 5d gauge coupling constant g^2 has the dimension of length, the two-loop correction is ~ g^2/R^5. The interplay of these two terms leads, under very general circumstances (including other interacting theories and more compact dimensions), to a stabilization at finite radius. Perturbative control or, equivalently, a parametrically large compact radius is ensured if the 1-loop coefficient is small because of an approximate fermion-boson cancellation. This is similar to the perturbativity argument underlying the Banks-Zaks fixed point proposal. Our analysis includes a scalar toy model, 5d Yang-Mills theory with charged matter, the examination of S^1 and S^1/Z_2 geometries, as well as a brief discussion of the supersymmetric case with Scherk-Schwarz SUSY breaking. 2-Loop calculability in the S^1/Z_2 case relies on the log-enhancement of boundary kinetic terms at the 1-loop level.
description: 18 pages, 2 figures, uses axodraw, references added
Locality of Orthogonal Product States via Multiplied Copies
Creators: name: Shu, Hao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we consider the LOCC distinguishability of product states. We employ polygons to analyze orthogonal product states in any system to show that with LOCC protocols, to distinguish seven orthogonal product states, one can exclude four states via a single copy. In bipartite systems, this result implies that N orthogonal product states are LOCC distinguishable if $\left \lceil \frac{N}{4} \right \rceil$ copies are allowed, where $\left \lceil l\right \rceil$ for a real number $l$ means the smallest integer not less than $l$. In multipartite systems, this result implies that N orthogonal product states are LOCC distinguishable if $\left \lceil \frac{N}{4}\right \rceil + 1$ copies are allowed. We also give a theorem to show how many states can be excluded via a single copy if we are distinguishing n orthogonal product states by LOCC protocols in a bipartite system. Not like previous results, our result is a general result for any set of orthogonal product states in any system.
description: 14 pages, 5 graphs, 7 tables
Lell, Joachim (Hrsg.), Erneuerung der Einen Kirche
Creators: name: Gassmann, Günther
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 16 Nr. 2 (1967): Ökumenische Rundschau, Band 16, Heft 2
The Threshold effects for the two-particle Hamiltonians on lattices
Creators: name: Albeverio, Sergio
name: Lakaev, Saidakhmat N.
name: Makarov, Konstantin A.
name: Muminov, Zahriddin I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: Primary: 81Q10, Secondary: 35P20, 47N50

description: For a wide class of two-body energy operators $h(k)$ on the three-dimensional lattice $\bbZ^3$, $k$ being the two-particle quasi-momentum, we prove that if the following two assumptions (i) and (ii) are satisfied, then for all nontrivial values $k$, $k\ne 0$, the discrete spectrum of $h(k)$ below its threshold is non-empty. The assumptions are: (i) the two-particle Hamiltonian $h(0)$ corresponding to the zero value of the quasi-momentum has either an eigenvalue or a virtual level at the bottom of its essential spectrum and (ii) the one-particle free Hamiltonians in the coordinate representation generate positivity preserving semi-groups.
CONSUMERS' REACTION TO FOLLOWING VEGAN DIET (FVD): AN APPLICATION OF TRANSTHEORETICAL MODEL (TM) AND PRECAUTION ADOPTION PROCESS MODEL (PAPM)
Creators: name: Salehi, Gelareh
name: Díaz, Estela
name: Redondo, Raquel
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 140219 Welfare Economics
subject: FOS: Economics and business

description: Vegan diet is gaining more attention from academics, professionals, public policies, activists, and individual consumers. However, further research is needed to have a better understanding of this food practice. Drawing on Transtheoretical Model (TM) and Precaution Adoption Process Model (PAPM) models, this paper proposes a conceptual framework regarding the steps of Following Vegan Diet (FVD). TM includes four variables: (1) stages of change; (2) decisional balance; (3) self-efficacy, and (4) processes of change. The PAPM contains only one variable, the stages of change, with two different stages from TM, disengagement and rejection. By theory adaptation approach, the TM has been extended in two ways. First, by combining the stages of change in TM and PAPM; as a result, TM acquired two additional stages (disengagement and rejection). Second, by logically predicting in which stages the decisional balance and self-efficacy variables could have influence on moving through stages. These two additional stages are in compliance with related literature of FVD. The proposed framework includes eight stages of change concerning four critical points between stages. This paper has practical implications for vegan food marketers and public policies, and animal activists, for designing more effective interventions to FVD as a more sustainable consumption.
DESTINATION SUCCESS: PRODUCING NATIONALLY RECOGNIZED SCHOLARS
Creators: name: Williams, Joseph E.
name: Williams, Joseph E.
Publisher: name: Unknown
Year: 2001
Subjects: Teaching/Communication/Extension/Profession

description: Oklahoma State University was named a Truman Honor School for its consistent record in producing Truman Scholars. Of the five recent winners, four were from the Agricultural Economics Department. The system used in the department, college, and university for identifying and nurturing students through the scholarship process is described.
A Utility-Theoretic Approach to Measuring Changes in US Rural Residents' Access to Hospital Services from 1980 to 1999
Creators: name: McNamara, Paul E.
name: McNamara, Paul E.
Publisher: name: Unknown
Year: 2001
Subjects: Health Economics and Policy

description: Questions of access to hospital services figure centrally in rural-health policy debates, yet few analyses exist that measure the importance of changes in hospital access in rural areas of the US. Of the studies that measure changes in access to hospital services over time in the literature, none use economic theory as the framework for the analysis. This paper proposes an economic approach based upon revealed preferences to measuring access to hospital services and quantifies the value of changes in hospital access over the period 1980 to 1999 for residents in rural counties in the US. Welfare measures are constructed for the years 1980 and 1999 for rural residents in all the rural counties of the US. On average the lowest levels of hospital access are found in the counties of the West, while Eastern US counties have better access to hospitals in comparison. The changes in hospital-consumer welfare indicate that over the period 1980 to 1999, access to hospital services has declined for rural US residents.
Synchronization in driven versus autonomous coupled chaotic maps
Creators: name: Pineda, M.
name: Cosenza, M. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The phenomenon of synchronization occurring in a locally coupled map lattice subject to an external drive is compared to the synchronization process in an autonomous coupled map system with similar local couplings plus a global interaction. It is shown that chaotic synchronized states in both systems are equivalent, but the collective states arising after the chaotic synchronized state becomes unstable can be different in these two systems. It is found that the external drive induces chaotic synchronization as well as synchronization of unstable periodic orbits of the local dynamics in the driven lattice. On the other hand, the addition of a global interaction in the autonomous system allows for chaotic synchronization that is not possible in a large coupled map system possessing only local couplings.
description: 4 pages, 3 figs, accepted in Phys. Rev. E
Excitation Functions of Product Nuclei from 40-2600 MeV Proton-Irradiated 206,207,208,natPb and 209Bi
Creators: name: Titarenko, Yury E.
name: Batyaev, Viacheslav F.
name: Mulambetov, Ruslan D.
name: Zhivun, Valery M.
name: Barashenkov, Vladilen S.
name: Mashnik, Stepan G.
name: Shubin, Yury N.
name: Ignatyuk, Anatoly V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The work is aimed at experimental determination of the independent and cumulative yields of radioactive residual nuclei produced in intermediate-energy proton-irradiated thin targets made of highly isotopic enriched and natural lead (206,207,208,natPb) and 209Bi. 5972 radioactive product nuclide yields have been measured in 55 thin targets induced by 0.04, 0.07, 0.10, 0.15, 0.25, 0.6, 0.8, 1.2, 1.4, 1.6, and 2.6 GeV protons extracted from the ITEP U-10 proton synchrotron. The measured data have been compared with data obtained at other laboratories as well as with theoretical simulations by seven codes. We found that the predictive power of the tested codes is different but is satisfactory for most of the nuclides in the spallation region, though none of the codes agree well with the data in the whole mass region of product nuclides and all should be improved further.
description: 4 pages, only pdf file, 3 figures, 1 table, to be published in Proc. Int. Conf. on Accelerator Applications 2005 (AccApp05), Venice, Italy, Aug. 29 - Sep. 1, 2005 (Nucl. Instrum. Meth. Phys. Res. A)
Ferri-chiral compounds with potentially switchable Dresselhaus spin split-ting
Creators: name: Huang, Pu
name: Xia, Zhiguo
name: Gao, Xiaoqing
name: Rondinelli, James M.
name: Zhang, Xiuwen
name: Zhang, Han
name: Poeppelmeier, Kenneth R.
name: Zunger, Alex
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin splitting of energy bands can be induced by relativistic spin-orbit interactions in materials without inversion symmetry. Whereas polar space group symmetries permit Rashba (R-1) spin splitting with helical spin textures in momentum space, which could be reversed upon switching a ferroelectric polarization via applied electric fields, the ordinary Dresselhaus effect (D-1A) is ac-tive only in materials exhibiting nonpolar noncentrosymmetric crystal classes with atoms occupy-ing exclusively non-polar lattice sites. Consequently, the spin-momentum locking induced by D-1A is not electric field-switchable. An alternative type of Dresselhaus symmetry, referred to as D-1B, exhibits crystal class constraints similar to D-1A (all dipoles add up to zero), but unlike D-1A, at least one polar site is occupied. We find that this behavior exists in a class of ferri-chiral crys-tals, which in principle could be reversed upon a change in chirality. Focusing on alkali metal chalcogenides, we identify NaCu5S3 in the nonentiamorphic ferri-chiral structure, which exhibits CuS3 chiral units differing in the magnitude of their Cu displacements. We then synthesize NaCu5S3 (space group P6322) and confirm its ferri-chiral structure with power x-ray diffraction. Our electronic structure calculations demonstrate it exhibits D-1B spin splitting as well as a ferri-chiral phase transition, revealing spin splitting interdependent on chirality. Our electronic struc-ture calculations show that a few percent biaxial tensile strain can reduce (or nearly quench) the switching barrier separating the monodomain ferri-chiral P6322 states. We discuss what type of external stimuli might switch the chirality so as to reverse the (non-helical) Dresselhaus D-1B spin texture, offering an alternative to the traditional reversal of the (helical) Rashba spin texture.
description: 27 pages, 12 figures
A simple algorithm for decoding Reed-Solomon codes and its relation to the Welch-Berlekamp algorithm
Creators: name: Fedorenko, Sergei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: A simple and natural Gao algorithm for decoding algebraic codes is described. Its relation to the Welch-Berlekamp and Euclidean algorithms is given.
description: 7 pages. Submitted to IEEE Transactions on Information Theory
Pressure effects on neutral and charged excitons in self-assembled InGaAs/GaAs quantum dots
Creators: name: Narvaez, Gustavo A.
name: Bester, Gabriel
name: Zunger, Alex
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: By combining an atomistic pseudopotential method with the configuration interaction approach, we predict the pressure dependence of the binding energies of neutral and charged excitons: $X^0$ (neutral monoexciton), $X^{-}$ and $X^{+}$ (charged trions), and $XX^0$ (biexciton) in lens-shaped, self-assembled In$_{0.6}$Ga$_{0.4}$As/GaAs quantum dots. We predict that (i) with applied pressure the binding energy of $X^0$ and $X^+$ increases and that of $X^-$ decreases, whereas the binding energy of $XX^0$ is nearly pressure independent. (ii) Correlations have a small effect in the binding energy of $X^0$, whereas they largely determine the binding energy of $X^-$, $X^+$ and $XX^0$. (iii) Correlations depend weakly on pressure; thus, the pressure dependence of the binding energies can be understood within the Hartree-Fock approximation and it is controlled by the pressure dependence of the direct Coulomb integrals $J$. Our results in (i) can thus be explained by noting that holes are more localized than electrons, so the Coulomb energies obey $J^{(hh)}>J^{(eh)}>J^{(ee)}$.
description: 4+ pages, 2 figures
Polydisperse chains placed on a one-dimensional lattice
Creators: name: Stilck, Jurgen F.
name: Neta, Minos A.
name: Dantas, Wellington G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using a transfer matrix technique, we calculate the entropy of polydisperse chains placed on a one-dimensional lattice, as a function of the density of internal and endpoint monomers. The polydispersivity is determined considering different activities for the two types of monomers, as is usual for equailibrium polymerization and living polymers. If the mean number of monomers in the chains is fixed, the entropy as a function of the density of monomers displays a maximum and is limited from below by the entropy of monodisperse chains. The increase of entropy due to the polydispersivity is a linear function of the density of monomers. We also calculate the distribution of chain sizes, obtaining an exponential relation.
description: 5 pages, 4 figures. Accepted for publication in Physica A
Doubly charged scalars and vector-like leptons confronting the muon g-2 anomaly and Higgs vacuum stability
Creators: name: Chakrabarty, Nabarun
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The present work introduces new scalar and fermionic degrees of freedom to the Standard Model. While the scalar sector is augmented by a complex scalar triplet and a doubly charged scalar singlet, the fermionic sector is extended by two copies of vector-like leptons. Of these, one copy is an $SU(2)_L$ singlet while the other, an $SU(2)_L$ doublet. We explain how this combination can offer a solution to the muon g-2 anomaly and also lead to non-zero neutrino masses. In addition, it is also shown that the parameter regions compliant with the two aforementioned issues can stabilise the electroweak vacuum till the Planck scale, something not possible within the Standard Model alone.
description: Text modified and figures added. Version accepted for publication
Quantum Manipulation of Trapped Ions in Two Dimensional Coulomb Crystals
Creators: name: Porras, D.
name: Cirac, J. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that a large number of ions stored in a Penning trap, and forming a 2D Coulomb crystal, provides an almost ideal system for scalable quantum computation and quantum simulation. In particular, the coupling of the internal states to the motion of the ions transverse to the crystal plane, allows one to implement two qubit quantum gates. We analyze in detail the decoherence induced by anharmonic couplings with in--plane hot vibrational modes, and show that very high gate fidelities can be achieved with current experimental set--ups.
description: 10 pages, 3 figures. We include an appendix with: (i) Details on the calculation presented in the main text. (ii) An scheme for inducing effective spin-spin interactions with a walking wave scheme for quantum simulations with trapped ions
Diffusion Limit of the Vlasov-Poisson-Boltzmann System
Creators: name: Li, Hai-Liang
name: Yang, Tong
name: Zhong, Mingying
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In the present paper, we study the diffusion limit of the classical solution to the unipolar Vlasov-Poisson-Boltzmann (VPB) system with initial data near a global Maxwellian. We prove the convergence and establish the convergence rate of the global strong solution to the unipolar VPB system towards the solution to an incompressible Navier-Stokes-Poisson-Fourier system based on the spectral analysis with precise estimation on the initial layer.
QUALITATIVE RESEARCH IN AGRICULTURAL ECONOMICS: PARADIGMS, PURPOSES, AND EVALUATION CRITERIA
Creators: name: Bitsch, Vera
name: Bitsch, Vera
Publisher: name: Unknown
Year: 2001
Subjects: Research Methods/ Statistical Methods

description: The qualitative paradigm is not widely discussed in agricultural economics, although research strategies are applied. The purpose of this contribution is (1) to elaborate on the paradigm of qualitative research; (2) to introduce purposes of qualitative research and provide examples; and (3) to discuss criteria of scientific rigor applicable.
An analytic investigation of the scatter in the integrated X-ray properties of galaxy groups and clusters
Creators: name: Balogh, Michael L.
name: Babul, Arif
name: Voit, G. Mark
name: McCarthy, Ian G.
name: Jones, Laurence R.
name: Lewis, Geraint F.
name: Ebeling, Harald
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We revisit the scaling relationships between the dark matter mass and observed X-ray luminosity and temperature of galaxy clusters and groups in the local Universe. Specifically, we compare recent observations with analytic models of the intracluster medium in which the gas entropy distribution has been shifted by a variable amount, K0, to investigate the origin of the scatter in these scaling relations, and its influence on the luminosity and temperature functions. We find that variations in halo concentration or formation epoch (which might determine the time available for low entropy gas to cool out) are insufficient to explain the amount of scatter in the mass-luminosity relation. Instead, a range of entropy floors at a fixed halo mass, spanning approximately 50 keV sq.cm to 700 keV sq.cm, is required to match the data. This range is likely related to the variance in heating and/or cooling efficiency from halo to halo. We demonstrate that these models are consistent with the observed temperature and luminosity functions of clusters, if scatter in the mass-luminosity relation is accounted for. Finally, we present predictions for the redshift evolution of these scaling relations and luminosity/temperature functions. Comparison with recent data at z<0.7 shows reasonable agreement with a model that assumes a median entropy floor of K0=200 keV sq.cm. When observations are extended to group scales (kT < 1 keV), this evolution will have the potential to discriminate between an entropy floor that is independent of redshift (for example, in a preheating scenario) and one that depends on the cooling time of the halo.
description: MNRAS, accepted. 12 pages, mnras style, with 12 inline figures. Replaced with minor changes to update references and match published version
New Separation of Variables for the Classical XXX and XXZ Heisenberg Spin Chains
Creators: name: Magnano, Guido
name: Skrypnyk, Taras
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We propose a non-standard separation of variables for the classical integrable XXX and XXZ spin chains with degenerate twist matrix. We show that for the case of such twist matrices one can interchange the role of classical separating functions $A(u)$ and $B(u)$ and construct a new full set of separated variables, satisfying simpler equation of separation and simpler Abel equations in comparison with the standard separated variables of Sklyanin. We show that for certain cases of the twist matrices the constructed separated variables can be directly identified with action-angle coordinates.
IMPROVING AGRIBUSINESS EDUCATION, RESEARCH AND INDUSTRY INTERACTION THROUGH EDUCATIONAL COALITIONS
Creators: name: Wade, Mark A.
name: Wade, Mark A.
Publisher: name: Unknown
Year: 2001
Subjects: Agribusiness

description: Students gain knowledge and skill through interaction and hands-on experimentation. The formation and development of successful educational coalitions or partnerships are examined, including diversity of membership, plan development, funding and infrastructure. Potential pitfalls and strategies for success are presented. Students learn best from those that are doing and by doing.
Study of the collapse of granular columns using DEM numerical simulation
Creators: name: Staron, L.
name: Hinch, E. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Geophysics (physics.geo-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Numerical simulations of the collapse and spreading of granular columns onto an horizontal plane using the Contact Dynamics method are presented. The final shape of the deposit seems to depend only on the aspect ratio $a$ of the columns; these results are in good agreement with previous experimental work. In particular, the renormalised runout distance shows a power law dependence on the aspect ratio $a$, which is incompatible with a simple friction model. The dynamics of the collapse is shown to be mostly controlled by the free fall of the column. The energy dissipation at the base of the column can be described simply by a coefficient of restitution. Hence the energy available for the sideways flow is proportional to the initial potential energy $E_0$. The dissipation process within the flow is well approximated by basal friction, contrary to the behaviour of the runout distance. The mass ejected sideways is showned to play a determining role in the spreading process. As $a$ increases, the same fraction of initial potential energy $E_0$ drives more mass against friction. This additional dissipation give a possible explanation for power-law dependence of the runout distance on $a$. Beyond the frictional properties of the material, we show that the flow characteristics strongly depend on the early dynamics of the collapse. We propose a new scaling for the runout distance that matches the data well, is compatible with a friction model, and provide a qualitative explanation to the column collapse phenomenology.
description: 15 pages, 22 Figures
DESIGNING NONPOINT SOURCE POLLUTION POLICIES WITH LIMITED INFORMATION ABOUT BOTH RISK ATTITUDES AND PRODUCTION TECHNOLOGY
Creators: name: Peterson, Jeffrey M.
name: Boisvert, Richard N.
name: Peterson, Jeffrey M.
name: Boisvert, Richard N.
Publisher: name: Unknown
Year: 2001
Subjects: Environmental Economics and Policy

description: A pollution reduction program is designed where information about both technology and risk preferences is asymmetric. Program costs and the distribution of payments depend on the amount of information known to the policy maker. Empirically testable conditions for self-selection are derived; the method is applied to reducing nitrate contamination.
DOES CONTRACTING RAISE FARM PRODUCTIVITY? THE IMPACT OF PRODUCTION CONTRACTS ON HOG FARM PERFORMANCE
Creators: name: Key, Nigel D.
name: McBride, William D.
name: Key, Nigel D.
name: McBride, William D.
Publisher: name: Unknown
Year: 2001
Subjects: Livestock Production/Industries
Productivity Analysis

description: The costs and benefits of policies designed to regulate the use of production contracts will depend in part on the impact of these contracts on farm productivity. In this paper we measure the impact of contracting on 1) partial and total factor productivity and 2) the production technology for 479 US hog operations. A sample selection model accounts for the fact that unobservable variables may be correlated with both the decision to contract and farm productivity. Results also identify determinants of farmers' decisions to contract and factors influencing farm productivity.
The Impact of Hydrodynamic Mixing on Supernova Progenitors
Creators: name: Young, Patrick A.
name: Meakin, Casey
name: Arnett, David
name: Fryer, Chris L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent multidimensional hydrodynamic simulations have demonstrated the importance of hydrodynamic motions in the convective boundary and radiative regions of stars to transport of energy, momentum, and composition. The impact of these processes increases with stellar mass. Stellar models which approximate this physics have been tested on several classes of observational problems. In this paper we examine the implications of the improved treatment on supernova progenitors. The improved models predict substantially different interior structures. We present pre-supernova conditions and simple explosion calculations from stellar models with and without the improved mixing treatment at 23 solar masses. The results differ substantially.
description: 12 pages, 2 figures, accepted for publication in the Astrophysical Journal Letters
Studies on apoptosis in bovine follicles and embryos
Creators: name: Yang, Ming Yuan
Publisher: name: University of British Columbia
Year: 2009

description: The aims of this thesis were to further study the involvement of apoptosis in bovine ovarian follicles and embryos. In the first part of the thesis, studies in vitro and in vivo were carried out to investigate whether apoptosis is the underlying mechanism of follicular atresia and to characterize its regulation by hormones. Studies in vitro demonstrated that granulosa cells (GCs) in follicles undergoing atresia display both morphological and biochemical characteristics of apoptosis. Apoptosis was observed mainly in GCs and in scattered theca cells. Apoptosis was not evident in cumulus cells. These results suggest that apoptosis is the most common pathway of GC deletion which leads to the destruction of the GC layer and finally triggers follicular atresia. Apoptosis was also detected in GCs of some morphologically healthy follicles, indicating that apoptosis is detectable before other morphological and biochemical signs of degeneration appear. A system for culturing GCs in vitro was developed to study the hormonal regulation of apoptosis. Using this culture system, it was observed that the rate of DNA fragmentation in cultured GCs from small follicles was higher than that from medium and large follicles. Follicle stimulating hormone (FSH) and insulin-like growth factor-I (IGF-I) attenuated spontaneous apoptotic cell death in cultured GCs, suggesting that they are follicle survival factors. An in vivo model in which the proestrus dominant follicle (DF) is maintained for 9 days was used to further study the precise regulation of the atresia of the nonovulatory DF induced by high concentration of progesterone (P4). With the time of P4 administration, DFs gradually underwent atresia and exhibited different levels of apoptosis in GCs, confirming our previous findings. P4 did not suppress apoptotic death in cultured GCs, suggesting P4- induced atresia of non-ovulatory bovine DFs is probably via regulation of luteinizing hormone (LH). In addition, it was demonstrated that follicular atresia was related to a shift in the ratio of death repressor (Bcl-2) to death inducer (Bax) protein expression. Using an in vitro embryo production system, apoptosis was found to be related to bovine oocyte degeneration and embryo fragmentation, suggesting the existence of a natural preprogrammed cell death mechanism which can respond to external stimuli and/or internal defects in bovine oocytes and embryos. The ratio of Bcl-2 and Bax protein expression was demonstrated to be an important determinant of developmental competence for both oocytes and embryos. This thesis provides important insight into the mechanisms of follicular atresia and early embryonic loss. Evaluation of the nature of these events would increase our understanding of the limitations with follicular dynamics and early embryonic development.
Spectroscopy of Magnetic Excitations in Magnetic Superconductors Using Vortex Motion
Creators: name: Bulaevskii, L. N.
name: Hruška, M.
name: Maley, M. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In magnetic superconductors a moving vortex lattice is accompanied by an ac magnetic field which leads to the generation of spin waves. At resonance conditions the dynamics of vortices in magnetic superconductors changes drastically, resulting in strong peaks in the dc I-V characteristics at voltages at which the washboard frequency of vortex lattice matches the spin wave frequency $ω_s({\bf g})$, where ${\bf g}$ are the reciprocal vortex lattice vectors. We show that if washboard frequency lies above the magnetic gap, peaks in the I-V characteristics in borocarbides and cuprate layered magnetic superconductors are strong enough to be observed over the background determined by the quasiparticles.
description: 4 pages, 1 figure
Deep-PowerX: A Deep Learning-Based Framework for Low-Power Approximate Logic Synthesis
Creators: name: Pasandi, Ghasem
name: Peterson, Mackenzie
name: Herrera, Moises
name: Nazarian, Shahin
name: Pedram, Massoud
Publisher: name: arXiv
Year: 2020
Subjects: subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper aims at integrating three powerful techniques namely Deep Learning, Approximate Computing, and Low Power Design into a strategy to optimize logic at the synthesis level. We utilize advances in deep learning to guide an approximate logic synthesis engine to minimize the dynamic power consumption of a given digital CMOS circuit, subject to a predetermined error rate at the primary outputs. Our framework, Deep-PowerX, focuses on replacing or removing gates on a technology-mapped network and uses a Deep Neural Network (DNN) to predict error rates at primary outputs of the circuit when a specific part of the netlist is approximated. The primary goal of Deep-PowerX is to reduce the dynamic power whereas area reduction serves as a secondary objective. Using the said DNN, Deep-PowerX is able to reduce the exponential time complexity of standard approximate logic synthesis to linear time. Experiments are done on numerous open source benchmark circuits. Results show significant reduction in power and area by up to 1.47 times and 1.43 times compared to exact solutions and by up to 22% and 27% compared to state-of-the-art approximate logic synthesis tools while having orders of magnitudes lower run-time.
Optimizing high-density phototrophic cultivation of C. reinhardtii for chloroplast recombinant protein production
Creators: name: Wellman, Gordon B.
name: Abdullah, Amna A.
name: Abdallah, Malak
name: Lauersen, Kyle J.
Publisher: name: KAUST Research Repository
Year: 2023

description: Recent advances in transgene design and strain domestication have enabled the demonstration of Chlamydomonas reinhardtii as a photosynthetic cell chassis for sustainable heterologous production of a range of natural products from sunlight, CO2, and trace elements. Here, I present recent developments in C. reinhardtii platform strain engineering and high-density photoautotrophic medium optimization for the production of recombinant proteins (RPs). A domesticated strain (UVM4) with high nuclear genome transgene expression capability was first optimized for the capacity to grow on inorganic phosphite and nitrate as sole sources of P and N, respectively, to enable high-cell density cultivation with reduced risk of contamination. This “UPN” strain has served as a platform to produce heterologous metabolites and metabolic engineering in our group for the last two years. A further goal was to use this phosphite-capable, high-cell-density enabled strain to sustainably produce food-grade recombinant proteins, such as ice-binding and sweet proteins (thaumatin, monellin). Protein production in alga leverages its generally regarded as safe (GRAS) status as a safe host to produce edible ingredients. The chloroplast genome of UPN22 was further engineered by PsbH knock-out/restoration transformation to enable antibiotic-free selection and expression of a variety of recombinant proteins. This strategy allows photoautotrophic production of recombinant proteins that accumulated in the algal plastid, while avoiding concerns about the use of antibiotic resistance markers. Batch mixotrophic growth of transformants in modified TAP medium - Tris-Acetate-Phosphite (TAPhi) - showed successful expression of recombinant proteins and was significantly increased in photoautotrophic-growth with customized high-density, phosphite-containing media. Further improvements to these media were made by optimising the N:P ratio that enabled the production of higher cell dry weights. The approach enables the production of recombinant proteins as a small fraction of total soluble protein, which can be generated in addition to other fractions of algal biomass grown photoautotrophically.
Spin Susceptibility of a 2D Electron System in GaAs towards the Weak Interaction Region
Creators: name: Tan, Y. -W.
name: Zhu, J.
name: Stormer, H. L.
name: Pfeiffer, L. N.
name: Baldwin, K. W.
name: West, K. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We determine the spin susceptibility $χ$ in the weak interaction regime of a tunable, high quality, two-dimensional electron system in a GaAs/AlGaAs heterostructure. The band structure effects, modifying mass and g-factor, are carefully taken into accounts since they become appreciable for the large electron densities of the weak interaction regime. When properly normalized, $χ$ decreases monotonically from 3 to 1.1 with increasing density over our experimental range from 0.1 to $4\times10^{11} cm^{-2}$. In the high density limit, $χ$ tends correctly towards $χ\to 1$ and compare well with recent theory.
description: Submitted to Physical Review B
Four new species of the Madagascan genus Exphora Signoret, 1860 (Auchenorrhyncha: Fulgoromorpha: Tropiduchidae: Elicini) with comments on some hitherto undescribed ultrastructural characters
Creators: name: Junkiert, Łukasz
name: Walczak, Marcin
name: Bugaj-Nawrocka, Agnieszka
Publisher: name: Zoological Research Museum Alexander Koenig
Year: 2021

description: Four new species of the Madagascan genus Exphora Signoret, 1860 (Hemiptera: Fulgoromorpha: Tropiduchi-dae) are described: E. bourgoini sp. nov., E. kalalaoensis sp. nov., E. angustivenosa sp. nov. and E. robusta sp. nov. Also, a new, green colour form of E. linnavuorii Junkiert, Walczak Bourgoin, 2017 is presented. The male and female geni-talia of the new species are illustrated. SEM photos of the head, antennae and their sensilla, legs, as well as the fore and hind wings are given. A number of structures, which were previously unknown or undescribed, are discussed, including the compound eye with trichoid sensilla, the sensory plate organ on the antennal pedicel surface, the fore and hind wings hamuli, the area of microtrichia at the costa posterior of the fore wing, the tegula, the postcubitus bulla, the third coxa with coxal protrusion and the spines of tibia. A distribution map of the newly described species and an illustrated key to all Exphora species are provided
IMPACTS OF CORN AND SOYBEAN MEAL PRICE CHANGES ON THE DEMAND AND SUPPLY OF U.S. BROILERS
Creators: name: Pothidee, Ajchara
name: Allen, Albert J.
name: Hudson, Darren
name: Pothidee, Ajchara
name: Allen, Albert J.
name: Hudson, Darren
Publisher: name: Unknown
Year: 1999
Subjects: Demand and Price Analysis

description: This study examined factors that affected the prices of corn and soybean meal and the impact of these prices on market demand and supply for U.S. broilers. An econometric model consisting of four structural equations and one identity was formulated and estimated using quarterly data from 1976 to 1996. One of the results reveals that soybean meal price flexibilities with respect to soybean prices were highly elastic in both the short and long run. This means that changes in soybean prices have a relatively large effect on meal price. In contrast, meal price and oil price moved in opposite directions. An increase in oil price encourages an increase in crushing oilseeds, resulting in an increase in both oil and meal supply. In addition, results indicated that a sustained increase in corn and soybean meal prices will have an immediate impact on broiler quantities and prices.
TRANSFORMATION OF FALLOW SYSTEMS UNDER POPULATION PRESSURE
Creators: name: Thomas, Timothy S.
name: Thomas, Timothy S.
Publisher: name: Unknown
Year: 1999
Subjects: Land Economics/Use

description: In a fallow-cultivation model with biomass regeneration, we find the population-poverty-degradation linkage via the discount rate: slight increases in the discount rate result in increased cropping frequency and much lower soil fertility. Aggregating gives transitions equation declining in fertility and increasing in the fallow:cultivation ratio.
On the Gaussian Random Matrix Ensembles with Additional Symmetry Conditions
Creators: name: Vasilchuk, Vladimir
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The Gaussian unitary random matrix ensembles satisfying some additional symmetry conditions are considered. The effect of these conditions on the limiting normalized counting measures and correlation functions is studied.
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
title: Αντιβιοτικά σε τρόφιμα ζωικής προέλευσης
title: Antibiotics in foods of animal origin
titleType: AlternativeTitle
Creators: name: Παπαδάκη, Λυδία Ζωή
name: Σαρικάγια, Ελισάβετ
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Αντιβιοτικά
Ζωικά Προϊόντα
Παραγωγικά Ζώα

description: Στην παρούσα πτυχιακή εργασία το θέμα είναι τα αντιβιοτικά σε τρόφιμα ζωικής προέλευσης. Τα αντιβιοτικά εισήχθησαν στην ιατρική στις αρχές του 20ου αιώνα και πολύ σύντομα βρήκαν εφαρμογή και στον χώρο της κτηνοτροφίας. Χορηγούνται στα ζώα για θεραπεία και προστασία από ασθένειες, αλλά και ως αναπτυξιακοί παράγοντες. Δυστυχώς, χρησιμοποιήθηκαν για αρκετές δεκαετίες με αλόγιστο τρόπο, με αποτέλεσμα την ανάπτυξη μηχανισμών αντοχής αρκετών μικροοργανισμών, γεγονός που αποτελεί ένα δυνητικό παράγοντα κινδύνου για την ανθρώπινη υγεία. Η ευρωπαϊκή κοινότητα έχει διαμορφώσει ένα αυστηρό νομοθετικό πλαίσιο που ρυθμίζει την χρήση των αντιμικροβιακών φαρμάκων στα παραγωγικά ζώα. Σε παγκόσμιο επίπεδο, όμως, ο κίνδυνος άργησε να γίνει αντιληπτός αν και τώρα εκδίδονται οδηγίες και παροτρύνεται ο περιορισμός της χρήσης τους στο ελάχιστο δυνατόν και μόνο όταν είναι απολύτως απαραίτητο. Ποσότητα αντιβιοτικών αλλά και στελέχη μικροοργανισμών ανθεκτικών ή με γονιδίωμα που δείχνει ανθεκτικότητα έχουν εντοπισθεί σε πολλά ζωικά προϊόντα ανά τον κόσμο από πολλούς ερευνητές, όπως σε αυγά στο Βιετνάμ και στην Ινδία, και σε τυρί και γιαούρτι στην Κίνα. Με την εφαρμογή πολλών διαφορετικών μεθόδων ανάλυσης επιτυγχάνεται ο έλεγχος και η ανίχνευση υπολειμμάτων αντιβιοτικών σε ζωικά προϊόντα.
Ontology of Social Practices
Creators: name: Garcia Godinez, Miguel
Publisher: name: Journal of Social Ontology
Year: 2023

description: Although social practices are widely considered to be essential building blocks in the construction of our social world, there is not much of an agreement regarding what kind of entities they are and what constitutes their nature. As an attempt to make progress in this direction, I provide here a general account of their ontology. By implementing specific resources from contemporary social ontology and collective intentionality, I argue that social practices are composite, material entities socially constructed by organised social groups through their individual members acting according to collective reasons. With this, I intend to contribute towards the understanding of both the reality of social practices and their role in the construction of other social entities; particularly, artifacts and institutions.
description: Journal of Social Ontology, Vol. 9 No. 1 (2023)
MIXTURE DISTRIBUTIONS: CURING COMMODITY KURTOSIS?
Creators: name: Roberts, Matthew C.
name: Roberts, Matthew C.
Publisher: name: Unknown
Year: 1999
Subjects: Agribusiness
Research Methods/ Statistical Methods

description: Recent research has determined that commodity prices often exhibit distributional characteristics inconsistent with normality or log-normality. We utilize discrete mixtures of log-normals in a GARCH framework to model corn, wheat, and soybean prices. Options premiums are simulated and compared to actual premiums and premiums generated under standard Black-Scholes assumptions.
Ontological Holism Without Mental Holism
Creators: name: Hindriks, Frank
Publisher: name: Journal of Social Ontology
Year: 2023

description: In his recent book Shared and Institutional Agency, Bratman (2022) argues that institutional agents consist of social rules of procedure. Those rules are policies that are shared among many of their members. In this review essay, I argue that the theory can plausibly be interpreted in terms of ontological holism. It shows how a holistic theory can be constructed out of individualistic building blocks. At the same time, Bratman rejects mental holism, the idea being that institutional agents form only a limited range of mental states. Furthermore, he claims that they can perform actions literally for no reason. I propose that, if this is indeed possible, a morally accountable agent will avoid doing so.
description: Journal of Social Ontology, Vol. 9 No. 1 (2023)
Molecular states in a one-electron double quantum dot
Creators: name: Huettel, A. K.
name: Ludwig, S.
name: Lorenz, H.
name: Eberl, K.
name: Kotthaus, J. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The transport spectrum of a strongly tunnel-coupled one-electron double quantum dot electrostatically defined in a GaAs/AlGaAs heterostructure is studied. At finite source-drain-voltage we demonstrate the unambiguous identification of the symmetric ground state and the antisymmetric excited state of the double well potential by means of differential conductance measurements. A sizable magnetic field, perpendicular to the two-dimensional electron gas, reduces the extent of the electronic wave-function and thereby decreases the tunnel coupling. A perpendicular magnetic field also modulates the orbital excitation energies in each individual dot. By additionally tuning the asymmetry of the double well potential we can align the chemical potentials of an excited state of one of the quantum dots and the ground state of the other quantum dot. This results in a second anticrossing with a much larger tunnel splitting than the anticrossing involving the two electronic ground states.
description: 4 pages, 4 figures; EP2DS-16 conference contribution
The Jammed Phase of the Biham-Middleton-Levine Traffic Model
Creators: name: Angel, Omer
name: Holroyd, Alexander E
name: Martin, James B
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 60K35; 82B43

description: Initially a car is placed with probability p at each site of the two-dimensional integer lattice. Each car is equally likely to be East-facing or North-facing, and different sites receive independent assignments. At odd time steps, each North-facing car moves one unit North if there is a vacant site for it to move into. At even time steps, East-facing cars move East in the same way. We prove that when p is sufficiently close to 1 traffic is jammed, in the sense that no car moves infinitely many times. The result extends to several variant settings, including a model with cars moving at random times, and higher dimensions.
description: 15 pages, 5 figures; revised journal version
MANUFACTURING SPECIALIZATION IN THE SOUTHEAST: RURAL NECESSITY, RURAL POSSIBILITY OR RURAL VESTIGE?
Creators: name: Lackey, Steven Brent
name: Wojan, Timothy R.
name: Lackey, Steven Brent
name: Wojan, Timothy R.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Industrial Organization
subject: rural manufacturing
subject: specialization
subject: economies of scale
subject: localization
subject: monopsony

description: This paper examines three alternative explanations for manufacturing specialization in rural areas: 1) the greater efficiency of very large plants; 2) the "localization" advantages identified with a number of firms in the same industry locating near each other; or 3) a strategy to gain bargaining power by a dominant employer in the county.
Solution Artifacts on Re-Engineering Microservices-Based Webshops Challenge
Creators: name: Setyautami, Maya Retno Ayu
name: Fadhlillah, Hafiyyan Sayyid
name: Adianto, Daya
name: Affan, Ichlasul
name: Azurat, Ade
Publisher: name: Zenodo
Year: 2020
Subjects: feature identification
software product line
reengineering
microservices

description: This publication contains six files: WebShop - Feature Identification.xlsx
 A Microsoft Excel file that is used to identify and categorize features on products included in the challenge. model.zip
 It contains class diagrams for each analyzed product, feature diagrams for re-engineered product line, and UML-DOP diagrams for each base feature (Cart, Catalog, Order). catalog-abs-microservices-master.zip
 It contains Abstract Behavioral Specification (ABS) Microservices Framework source code for Catalog base feature, serving as a single microservice instance. cart-abs-microservices-master.zip
 It contains Abstract Behavioral Specification (ABS) Microservices Framework source code for Cart base feature, serving as a single microservice instance. order-abs-microservices-master.zip
 It contains Abstract Behavioral Specification (ABS) Microservices Framework source code for Order base feature, serving as a single microservice instance. deployment-cli-master.zip
 It contains source code of command-line interface (CLI) that used for creating a new product based on feature configuration defined by the user.