cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Robust state preparation of a single trapped ion by adiabatic passage
Creators: name: Wunderlich, Chr.
name: Hannemann, Th.
name: Koerber, T.
name: Haeffner, H.
name: Roos, Ch.
name: Haensel, W.
name: Blatt, R.
name: Schmidt-Kaler, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report adiabatic passage experiments with a single trapped $^{40}$Ca$^+$ ion. By applying a frequency chirped laser pulse with a Gaussian amplitude envelope we reach a transfer efficiency of 0.990(10) on an optical transition from the electronic ground state S$_{1/2}$ to the metastable state D$_{5/2}$. This transfer method is shown to be insensitive to the accurate setting of laser parameters, and therefore is suitable as a robust tool for ion based quantum computing.
Spin-state estimation using the Stern-Gerlach experiment
Creators: name: Martínez-Cifuentes, Javier
name: Fonseca-Romero, K. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a state estimation scheme for spins, using a modified setup of the Stern-Gerlach experiment, in which a beam of neutral spin-1/2 point particles interacts with a quadrupolar magnetic field. The proposed linear inversion estimation procedure, based on a quadrant intensity detector, requires a suitable initial spatial state of the beam. The statistical characterization of the estimator of the initial spin state allows us not only to associate an error to the estimated parameters, but also to define a measure for comparing estimation procedures corresponding to different Stern-Gerlach setups.
Unconventional Hall effect in oriented Ca$_3$Co$_4$O$_9$ thin films
Creators: name: Eng, H. W
name: Limelette, P.
name: Prellier, W.
name: Simon, Ch.
name: Fresard, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Transport properties of the good thermoelectric misfit oxide Ca$_3$Co$_4$O$_9$ are examined. In-plane resistivity and Hall resistance measurements were made on epitaxial thin films which were grown on {\it c}-cut sapphire substrates using the pulsed laser deposition technique. Interpretation of the in-plane transport experiments relates the substrate-induced strain in the resulting film to single crystals under very high pressure ($\sim$ 5.5 GPa) consistent with a key role of strong electronic correlation. They are confirmed by the measured high temperature maxima in both resistivity and Hall resistance. While hole-like charge carriers are inferred from the Hall effect measurements over the whole investigated temperature range, the Hall resistance reveals a non monotonic behavior at low temperatures that could be interpreted with an anomalous contribution. The resulting unconventional temperature dependence of the Hall resistance seems thus to combine high temperature strongly correlated features above 340 K and anomalous Hall effect at low temperature, below 100 K.
description: Submitted to Physical Review B (2005)
Contextual Subspace Variational Quantum Eigensolver
Creators: name: Kirby, William M.
name: Tranter, Andrew
name: Love, Peter J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe the contextual subspace variational quantum eigensolver (CS-VQE), a hybrid quantum-classical algorithm for approximating the ground state energy of a Hamiltonian. The approximation to the ground state energy is obtained as the sum of two contributions. The first contribution comes from a noncontextual approximation to the Hamiltonian, and is computed classically. The second contribution is obtained by using the variational quantum eigensolver (VQE) technique to compute a contextual correction on a quantum processor. In general the VQE computation of the contextual correction uses fewer qubits and measurements than the VQE computation of the original problem. Varying the number of qubits used for the contextual correction adjusts the quality of the approximation. We simulate CS-VQE on tapered Hamiltonians for small molecules, and find that the number of qubits required to reach chemical accuracy can be reduced by more than a factor of two. The number of terms required to compute the contextual correction can be reduced by more than a factor of ten, without the use of other measurement reduction schemes. This indicates that CS-VQE is a promising approach for eigenvalue computations on noisy intermediate-scale quantum devices.
description: 18 pages, 5 figures
Correlations of quantum curvature and variance of Chern numbers
Creators: name: Gat, Omri
name: Wilkinson, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyse the correlation function of the quantum curvature in complex quantum systems, using a random matrix model to provide an exemplar of a universal correlation function. We show that the correlation function diverges as the inverse of the distance at small separations. We also define and analyse a correlation function of mixed states, showing that it is finite but singular at small separations. A scaling hypothesis on a universal form for both types of correlations is supported by Monte-Carlo simulations. We relate the correlation function of the curvature to the variance of Chern integers which can describe quantised Hall conductance.
description: 24 pages, 10 figures, submitted to Sci. Post Physics, minor revision in response to referee reports
ความสัมพันธ์ของวิถีชีวิตชุมชนริมฝั่งน้ำต่อพฤติกรรมการปล่อยของเสียลงสู่แม่น้ำท่าจีน
Creators: name: พิชญา นามพิมพ์
Publisher: name: สำนักวิทยบริการ มหาวิทยาลัยสงขลานครินทร์ วิทยาเขตปัตตานี
Year: 2015
Subjects: วิถีชีวิตริมนํ้า, พฤติกรรม, การปล่อยของเสีย, แม่นํ้าท่าจีน, riverbank community life style, behavior, sewage, Thachin River

description: 3, 26, วารสารวิทยบริการ มหาวิทยาลัยสงขลานครินทร์
Wolf-Rayet and O Star Runaway Populations from Supernovae
Creators: name: Dray, L. M.
name: Dale, J. E.
name: Beer, M. E.
name: Napiwotzki, R.
name: King, A. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present numerical simulations of the runaway fractions expected amongst O and Wolf-Rayet star populations resulting from stars ejected from binaries by the supernova of the companion. Observationally the runaway fraction for both types of star is similar, prompting the explanation that close dynamical interactions are the main cause of these high-velocity stars. We show that, provided that the initial binary fraction is high, a scenario in which two-thirds of massive runaways are from supernovae is consistent with these observations. Our models also predict a low frequency of runaways with neutron star companions and a very low fraction of observable Wolf-Rayet--compact companion systems.
description: MNRAS accepted, 10 pages, 5 figures
Light tetraquark states with the exotic quantum number $J^{PC} = 3^{-+}$
Creators: name: Su, Niu
name: Dong, Rui-Rui
name: Chen, Hua-Xing
name: Chen, Wei
name: Cui, Er-Liang
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We apply the method of QCD sum rules to study the $s q \bar s \bar q$ tetraquark states with the exotic quantum number $J^{PC} = 3^{-+}$, and extract mass of the lowest-lying state to be $2.33^{+0.19}_{-0.16}$ GeV. To construct the relevant tetraquark currents we need to explicitly add the covariant derivative operator. Our systematical analysis on their relevant interpolating currents indicates that: a) this state well decays into the $P$-wave $ρϕ/ωϕ$ channel but not into the $ρf_2(1525)/ωf_2(1525)/ϕf_2(1270)$ channels, and b) it well decays into the $K^*(892) \bar K_2^*(1430)$ channel but not into the $P$-wave $K^*(892) \bar K^*(892)$ channel.
description: 9 pages, 4 figures, to be published in PRD
Use of time-correlated single photon counting detection to measure the speed of light in water
Creators: name: Muino, Pedro L.
name: Thompson, Aaron M.
name: Buenker, Robert J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Traditional methods for measuring the speed of light in dispersive media have been based on the detection of interference between light waves emitted from the same source. In the present study the elapsed times for single photons to move from a laser to a photomultiplier tube are measured electronically. Time-correlated single photon counting detection produces a characteristic instrument response which has the same shape independent of both the path length the light travels and the nature of the transparent media through which it passes. This allows for an accurate calibration of the chronograph by observing shifts in the location of the instrument response for different distances traveled by the light. Measurement of the corresponding shift which occurs when light moves the same distance through air and water then enables an accurate determination of the ratio of the photon velocities in these two media. Three different wavelengths of light have been used. In two cases good agreement is found between the present measured light speeds and those which can be inferred from existing refractive index measurements in water. The shortest wavelength studied is too far in the uv to obtain a reliable estimate on the same basis, and so the ng value (1.463) measured in the present work awaits independent confirmation. A theoretical discussion of the present results is undertaken with reference to Newton's original corpuscular theory of light. It is argued that his failure to predict that light travels more slowly in water than in air arose from the inadequacy of his mechanical theory rather than his assumptions about the elementary composition of light.
description: 33 pages, 10 figures
Trends and Developments in United States Agricultural Policy: 1993-1995
Creators: name: Vande Kamp, Philip R.
name: Runge, C. Ford
name: Vande Kamp, Philip R.
name: Runge, C. Ford
Publisher: name: Unknown
Year: 1994
Subjects: Agricultural and Food Policy

description: Budget pressures, emphasis on environmentally sensitive agriculture, emphasis on finding agricultural export markets, and anti-agricultural program sentiment have fueled a climate for change in United States agricultural policy. Significant changes depend on the political strength of agricultural interest groups and on the compromises which can be reached between them. Several notable achievements have been accomplished in recent domestic agricultural policy legislation. The 1995 farm bill will define the commodity and conservation programs for the next five years. There have been history-setting accomplishments in reducing barriers to international agricultural trade. The tri-partite North American Free Trade Agreement became effective January 1, 1994. The Uruguay Round Agreement of the General Agreement on Tariffs and Trade was completed in late 1994.
A Review of the Socio-Economic Analysis of Soil Degradation Problems for Developed and Developing Countries
Creators: name: Thampapillai, Dodo J.
name: Anderson, Jock R.
name: Thampapillai, Dodo J.
name: Anderson, Jock R.
Publisher: name: Unknown
Year: 1994
Subjects: Land Economics/Use

description: In this paper, the main socio-economic concepts and their applications in the study of soil degradation are reviewed under three broad headings: soil conservation as an input in agricultural production; topsoil as a natural resource somewhere between being renewable and nonrenewable; and the effects of dealing with common property resources. The treatment of soil conservation as an input has involved the demonstration of damage functions and a study of factors influencing the adoption of soil conservation. The study of renewability, or the lack of it, has involved the application of the concept of user costs, whilst the consideration of common property resources has concentrated on the need to minimise the divergences between social and private values. The literature is dominated by work on developed countries and also reveals the research on decision frameworks to be compartmentalised in terms of the three concepts.
New type of ellipsometry in infrared spectroscopy: The double-reference method
Creators: name: Kezsmarki, I.
name: Bordacs, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We have developed a conceptually new type of ellipsometry which allows the determination of the complex refractive index by simultaneously measuring the unpolarized normal-incidence reflectivity relative to the vacuum and to another reference media. From these two quantities the complex optical response can be directly obtained without Kramers-Kronig transformation. Due to its transparency and large refractive index over a broad range of the spectrum, from the far-infrared to the soft ultraviolet region, diamond can be ideally used as a second reference. The experimental arrangement is rather simple compared to other ellipsometric techniques.
description: submitted to Appl. Phys. Lett
AC-driven double quantum dots as spin pumps and spin filters
Creators: name: Cota, Ernesto
name: Aguado, Ramon
name: Platero, Gloria
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose and analyze a new scheme of realizing both spin filtering and spin pumping by using ac-driven double quantum dots in the Coulomb blockade regime. By calculating the current through the system we demonstrate that the spin polarization of the current can be controlled by tuning the parameters (amplitude and frequency) of the ac field. We also discuss spin relaxation and decoherence effects in the pumped current.
description: 5 pages, 4 figures
ASSESSMENT OF WAIST HIP RATIO (WHR) AND FASTING BLOOD GLUCOSE (FBG) LEVEL IN YOUNG OBESE SUBJECTS
Creators: name: Aditya Kumar Jha
name: Dhivya S
name: Thuraya Abdulsalam A.A.  Al-Azazi
name: Bhaskar Charana Kabi
name: Manoj Kumar Nandkeoliar
Publisher: name: Zenodo
Year: 2024
Subjects: IR, Obesity, BMI, WHR, WC, FBG

description: Abstract

Background: The primary factor contributing to diabetes-related sickness is frequently occurring insufficient blood glucose management, which makes it worser. Central obesity also plays a significant role in the pathogenesis of diabetes and its harmful consequences, which could anticipate such risks. It is necessary to identify overweight and obesity in young adults at the earliest as they are more likely to cause Insulin Resistance (IR) resulting in serious issues early in their lives. Although Body Mass Index (BMI) is most frequently used to reflect obesity, Waist Hip Ratio (WHR) and Waist Circumference (WC) are better indices in order to evaluate central obesity. Aim: Assessment of WHR and Fasting Blood Glucose (FBG) in young obese population. Material and methods:  This cross-sectional study comprised of 100 obese subjects in the age range of 18 to 24 years. In accordance with WHO recommendations, a non-elastic measuring tape was used to measure the WC and WHR. FBG level was measured by semiauto analyzer. Result: WHR has significantly medium positive correlation with FBS level (p value = < 0.001). Conclusion: In obese individuals, the WHR and FBG level are positively correlated. Public awareness programs are therefore necessary to lower WHR by healthy lifestyle modifications like of change in eating habits and regular exercises. This would prevent the development of diabetes mellitus in long run.
Resource Economics and the Environment
Creators: name: Harrison, Stephen R.
name: Tisdell, Clement A.
name: Harrison, Stephen R.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 1994
Subjects: Environmental Economics and Policy

description: Recently, a number of specialty areas have developed dealing with the economics of natural systems, resources and the environment. These include natural resource economics, environmental economics, ecological economics and bioeconomics. As well, new government departments, research institutes and tertiary courses have evolved in these areas. This paper examines the evolution and characteristics of the new areas of specialisation, and their relationship with the more traditional discipline of agricultural economics. Environmental economics is viewed as a wider interdisciplinary field than natural resource economics, and ecological economics or bioeconomics is depicted as a branch of natural resource economics dealing with living resources.
Chondrules from high-velocity collisions: thermal histories and the agglomeration problem
Creators: name: Choksi, Nick
name: Chiang, Eugene
name: Connolly, Harold C.
name: Gainsforth, Zack
name: Westphal, Andrew J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We assess whether chondrules, once-molten mm-sized spheres filling the oldest meteorites, could have formed from super-km/s collisions between planetesimals in the solar nebula. High-velocity collisions release hot and dense clouds of silicate vapor which entrain and heat chondrule precursors. Thermal histories of CB chondrules are reproduced for colliding bodies $\sim$10--100 km in radius. The slower cooling rates of non-CB, porphyritic chondrules point to colliders with radii $\gtrsim$ 500 km. How chondrules, collisionally dispersed into the nebula, agglomerated into meteorite parent bodies remains a mystery. The same orbital eccentricities and inclinations that enable energetic collisions prevent planetesimals from re-accreting chondrules efficiently and without damage; thus the sedimentary laminations of the CB/CH chondrite Isheyevo are hard to explain by direct fallback of collisional ejecta. At the same time, planetesimal surfaces may be littered with the shattered remains of chondrules. The micron-sized igneous particles recovered from comet 81P/Wild-2 may have originated from in-situ collisions and subsequent accretion in the proto-Kuiper belt, obviating the need to transport igneous solids across the nebula. Asteroid sample returns from Hayabusa2 and OSIRIS-REx may similarly contain chondrule fragments.
description: Final MNRAS accepted and proofed version. Minor updates to Sections 2.3 and 3.2 discussing the treatment of the nebular headwind in previous work, plus additional references
Optimized Reparation based on Sequenced Number Routing for Ad Hoc Networks
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 100503 Computer Communications Networks
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: An ad-hoc network is a collection of wireless mobile hosts without the required intervention of any centralized Access Point. Traditional routing schemes would not be efficiently executed in such an environment where network topology is dynamic. Without the use of any traditional routers, a new routing method should be provided for mobile hosts to find routes toward destination, and such a routing method should dynamically adjust the routes corresponding to the changes of network topology. Proposed in this paper is a distributed routing method, termed Optimized Reparation based on Sequenced Number Routing (ORSNR), which applies a route repairing approach with optimization efforts to maintain the routes for network communications, and adopts a special technique with sequence numbers and vector representations to update routing information records for mobile hosts quickly and completely. The ORSNR performs better in large as hoc networks. The performance of the protocol is analyzed. Some future work and applications are also discussed.
Solvency and Performance of French Wineries in Times of Declining Sales: Co-operatives and Corporations
Creators: name: Declerck, Francis
name: Viviani, Jean Laurent
Publisher: name: CentMA
Year: 2012
Subjects: winery; co-operative; strategy; debt; leverage; performance; wine; crisis

description: The paper assesses the ability of French wineries to prevail over the crisis of French wine in the years 2000. Corporations are distinguished from co-operatives:
Over the 2000-2006 period in spite of sales fluctuations, French wineries did not increase their financial debt level substantially. Such result supports the traditional static trade-off theory (TOT). Co-operatives were able to absorb part of the impact of the wine crisis at the expense of their members, in increasing account payables to member. Corporations have not increased trade account payables to vine growers.
In the mid-2000s, the French wine crisis has not been strong enough to shake the financial structure of co-operatives and corporations. But co-operatives look more affected. However, sales of French wines dropped a lot more in 2009 and financial data are not yet available to observe the consequences.
description: International Journal on Food System Dynamics, Vol 3, No 2 (2012)
Revisiting electroweak radiative corrections to $b\to s\ell\ell$ in SMEFT
Creators: name: Endo, Motoi
name: Mishima, Satoshi
name: Ueda, Daiki
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We revisit electroweak radiative corrections to Standard Model Effective Field Theory (SMEFT) operators which are relevant for the $B$-meson semileptonic decays. The one-loop matching formulae onto the low-energy effective field theory are provided without imposing any flavor symmetry. The on-shell conditions are applied especially in dealing with quark-flavor mixings. Also, the gauge independence is shown explicitly in the $R_ξ$ gauge.
description: 29 pages, 9 figures
A Review of Environmental Valuation in Australia
Creators: name: Sinden, Jack A.
name: Sinden, Jack A.
Publisher: name: Unknown
Year: 1994
Subjects: Environmental Economics and Policy

description: Australian attempts to value the environment began at least 40 years ago. Since then, environmental protection and natural resource management have become major national issues. But have the methods of valuation kept pace with the importance of the issues that they are meant to resolve? Can environmental and resource values actually be measured? This paper chronicles, reviews, and assesses the valuations of 40 years and more than 100 Australian authors.
Lepton angular distribution of $W$ boson productions
Creators: name: Lyu, Yang
name: Chang, Wen-Chen
name: McClellan, Randall Evan
name: Peng, Jen-Chieh
name: Teryaev, Oleg
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The lepton angular distribution coefficients $A_i$ for $Z$ boson production in $pp$ and $\bar p p$ collisions have been measured at the LHC and the Tevatron. A recent study showed that many features of the measured angular distribution coefficients, including the transverse momentum ($q_T$) and rapidity dependencies and the violation of the Lam-Tung relation, can be well described using an intuitive geometric approach. In this paper, we extend this geometric approach to describe the angular distribution coefficients for $W$ boson produced in $\bar{p} p$ collisions at the Tevatron. We first compare the data with a perturbative QCD calculation at $\mathcal{O}(α_s^2)$. We then show that the data and QCD calculations can be well described with the geometric approach. Implications for future studies at the LHC energy are also discussed.
description: 8 pages and 6 figures. Published version
Midi-Rox: A reversible wrap dress to empower one-handed dressing
Creators: name: RAY LC
name: Tranquilli, Michael
name: Wardrop, Alyssa
Publisher: name: figshare
Year: 2021
Subjects: subject: 120306 Textile and Fashion Design
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: Disability prevalence and the need for assistance increases with age. Rising trends in the global aging population will multiply the number of the people impacted by disability. The lack of adequate accessible apparel for persons with disabilities (PWD) exacerbates disablement and barriers to community participation (1). In fellowship with Open Style Lab, an interdisciplinary team researched materials, technologies, and design solutions that enhance accessibility to functional clothing for PWD. Our client-centered design originated in collaboration with a person disabled in the activity of dressing due to hemiplegia caused by a Stroke. A closure-less garment design and compensatory dressing strategy were developed to minimize caregiver assistance for persons limited to one-handed dressing. The Midi-Rox dress and Hemi-Wrap method promote safety and modified independence.
Extracting d-orbital occupancy from magnetic Compton scattering in bilayer manganites
Creators: name: Barbiellini, B.
name: Mijnarends, P. E.
name: Kaprzyk, S.
name: Bansil, A.
name: Li, Yinwan
name: Mitchell, J. F.
name: Montano, P. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We consider the shape of the magnetic Compton profile (MCP), $J_{mag}(p_z)$, in La$_{1.2}$Sr$_{1.8}$Mn$_2$O$_7$ for momentum transfer $p_z$ along the [110] direction and the associated reciprocal form factor $B(r)$ defined by taking the one-dimensional Fourier transform of $J_{mag}(p_z)$. $B(r)$ is shown to contain a prominent dip at $r\approx$ 1 $Å$, where the minimum value $B_{min}$ of $B(r)$ can be related to the occupancies of the $e_g$ orbitals of $d_{x^2-y^2}$ and $d_{3z^2-r^2}$ symmetry in the system. We illustrate our procedure in detail by analyzing the measured MCP at 5K and the MCP computed within the framework of the local spin density approximation (LSDA) and comment on the differences between the measured and computed $e_g$ occupancies as a reflection of the limitations of the LSDA in treating electron correlation effects.
description: 5 pages, 3 figures, to appear in J. Phys. Chem. Solids
Efficient Distributed Control Routing and Wavelength Assignment Mechanism for a Scalable Hierarchical Single-hop WDM all-Optical Interconnection Network
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 100503 Computer Communications Networks
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper we propose an efficient distributed routing and wavelength allocation method for a Single-hop WDM (Wavelength Division Multiplexing) all-Optical Interconnection Network for Scalable Multiprocessor systems. By wavelength allocation, we mean the assignment of unique wavelength(s) to the access nodes. The WDM techniques enable extraction of a larger amount of usable bandwidth. Routing and wavelength assignment algorithms fine-tune the overall process by achieving orders of magnitude of performance improvement. The goal in this paper is to present an efficient dynamic distributed routing and wavelength allocation method that minimizes path latency, wavelength blocking and the number of wavelengths applied. We have applied this routing and wavelength allocation method in the simulation study of a multiprocessor interconnection network. The results are also presented. The overall effect is that our results show an improvement in performance, scalability and flexibility. This routing control mechanism and wavelength assignment is well suited to the SCOPIN (Scalable Optical Interconnection Network) architecture introduced in [1]. The SCOPIN architecture is quite scalable, hierarchical, regular and can easily be implemented using optics. With a distributed control, the interconnection networks are more robust and fault tolerant
Sustainability Management in Agribusiness: Challenges, Concepts, Responsibilities and Performance
Creators: name: Friedrich, Nina
name: Heyder, Matthias
name: Theuvsen, Ludwig
Publisher: name: CentMA
Year: 2012
Subjects: Corporate social responsibility; external stakeholders; performance; sustainability

description: The idea of sustainable management has recently gained growing attention in the agribusiness sector. This is mainly due to a widespread discontent with the industrialization of agricultural production and food processing and growing public pressure on agribusiness firms to implement more sustainable management practices. In this paper we present the results of an explorative empirical study of sustainability management in German agribusiness firms. The study shows that agribusiness firms have developed a broad understanding of sustainability management and perceive a multi-facetted spectrum of societal demands they have to meet. The most important arguments for implementing more sustainable management practices are that companies have to make sure that they are trusted by society in the long run and that the perception of a company by external stakeholders has become more and more important. The companies surveyed know quite a number of sustainability programmes and standards, but the number of companies that actually participate in these initiatives is much smaller. Nonetheless, the majority of the respondents feels that their company is more successful with regard to sustainability management than industry average.
description: International Journal on Food System Dynamics, Vol 3, No 2 (2012)
Lifting the Wool Curtain: Recent Reforms and New Opportunities in the Chinese Wool Market with Special Reference to the "Up-country" Mills
Creators: name: Brown, Colin G.
name: Longworth, John W.
name: Brown, Colin G.
name: Longworth, John W.
Publisher: name: Unknown
Year: 1994
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business

description: From being an insignificant buyer of Australian wool at the start of the 1980s, China had emerged as Australia's major, if somewhat erratic, customer by the 1992/93 season. Continued development of Sino-Australian trade in wool is vital to the future of the Australian wool-growing industry. This article describes recent market and trade reforms in China and examines their likely impact on wool imports. Particular attention is devoted to the effects the recent changes will have on the up-country mills which represent a poorly understood but potentially significant new market for Australian wool. In many respects the problems/opportunities identified in relation to the up-country mills also exist for many other mills in China which, for various reasons, have traditionally produced for the domestic market. The domestic demand for wool products in China is potentially enormous and further development of this market is one of the great challenges facing the Australian wool industry.
Islom dinida xotin-qizlar masalasi
Creators: name: Zaniyeva Mehribon Nuriddin qizi, Toshkent Axborot Texnologiyalari Universiteti  Samarqand filiali AKT 23.02-guruh talabasi
Publisher: name: Zenodo
Year: 2024

description: Maqolaning  mazmuni  O’zbekistonda  xotin-qizlar  hayoti, tarixiy  taraqqiyoti,  huquqiy  vakolatlari  kengayishi,   ularning  jamiyat  hay otida tutgan o’rni, globallashuv jarayonlariga ta’siri bilan bog’liq jarayonlar tahlilidan iborat.  Shu  o’rinda,  O’zbekistonda  xotin-qizlarni  huquqlari  va  ularni  qo’llabquvvatlashga doir mexanizmlar, tarixiy  rivojlanish jarayonlari, ularga berilayotgan imkoniyatlarm va qiynayotgan masalalar hamda qator takliflar ke ltirib o’tilgan.
Growth of matter perturbations in the extended viscous dark energy models
Creators: name: da Silva, W. J. C.
name: Silva, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this work, we study the extended viscous dark energy models in the context of matter perturbations. To do this, we assume an alternative interpretation of the flat Friedmann-Lemaître-Robertson-Walker Universe, through the nonadditive entropy and the viscous dark energy. We implement the relativistic equations to obtain the growth of matter fluctuations for a smooth version of dark energy. As result, we show that the matter density contrast evolves similarly to the $Λ$CDM model in high redshift; in late time, it is slightly different from the standard model. Using the latest geometrical and growth rate observational data, we carry out a Bayesian analysis to constrain parameters and compare models. We see that our viscous models are compatible with cosmological probes, and the $Λ$CDM recovered with a $1σ$ confidence level. The viscous dark energy models relieve the tension of $H_0$ in $2 \sim 3 σ$. Yet, by involving the $σ_8$ tension, some models can alleviate it. In the model selection framework, the data discards the extended viscous dark energy models.
description: 19 pages, 8 figures, 8 tables. Updated to match the published version
Collapse and revival of excitations in Bose-Einstein condensates
Creators: name: Mottonen, M.
name: Virtanen, S. M. M.
name: Salomaa, M. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the energies and decay of elementary excitations in weakly interacting Bose-Einstein condensates within a finite-temperature gapless second-order theory. The energy shifts for the high-lying collective modes turn out to be systematically negative compared with the Hartree-Fock-Bogoliubov-Popov approximation and the decay of the low-lying modes is found to exhibit collapse and revival effects. In addition, perturbation theory is used to qualitatively explain the experimentally observed Beliaev decay process of the scissors mode.
description: 9 pages, 5 figures
The implications of final L3 measurement of $σ_{tot}(γγ\to b\bar{b}
Creators: name: Chyla, Jiri
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: he excess of data on the total cross section of $\bar{b}b$ production in $γγ$ collisions over QCD predictions, observed by L3, OPAL and DELPHI Collaborations at LEP2, has so far defied explanation. The recent final analysis of L3 data has brought important new information concerning the dependence of the observed excess on the $γγ$ collisions energy $W_{γγ}$. The implications of this dependence are discussed.
description: 3 pages, 3 eps figures
Running Hubble Tension and a H0 Diagnostic
Creators: name: Krishnan, Chethan
name: Colgáin, Eoin Ó
name: Sheikh-Jabbari, M. M.
name: Yang, Tao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Hubble tension is routinely presented as a mismatch between the Hubble constant $H_0$ determined locally and a value inferred from the flat $Λ$CDM cosmology. In essence, the tension boils down to a disagreement between two numbers. Here, assuming the tension is cosmological in origin, we predict that within flat $Λ$CDM there should be other inferred values of $H_0$, and that a "running of $H_0$ with redshift" can be expected. These additional determinations of $H_0$ may be traced to a difference between the effective equation of state (EoS) of the Universe within the Friedmann-Lemaître-Robertson-Walker (FLRW) cosmology framework and the current standard model. We introduce a diagnostic that flags such a running of $H_0$.
description: 6 pages, 5 plots, v2: references added, v3: matches published version
Consumer Cooperatives: A Neglected Part of the Japanese Distribution Industry
Creators: name: Riethmuller, Paul C.
name: Riethmuller, Paul C.
Publisher: name: Unknown
Year: 1994
Subjects: Agribusiness

description: The consumer cooperative movement is the largest mass organisation in Japan, with more members than the agricultural cooperatives and trade unions. With the opening of the Japanese market to food imports, consumer cooperatives will play an increasingly important role. They will form relationships with foreign suppliers that will give these suppliers access to their members - a group of consumers who are perhaps the most affluent and discerning of Japanese consumers. They will require that their foreign suppliers produce products with residue levels lower than those the Japanese government sets. They may also apply pressure to foreign suppliers to adopt practices that are environmentally friendly.
A massless scalar particle coupled to the Wahlquist metric
Creators: name: Birkandan, T.
name: Hortacsu, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the solutions of the wave equation where a massless scalar field is coupled to the Wahlquist metric, a type-D solution. We first take the full metric and then write simplifications of the metric by taking some of the constants in the metric null. When we do not equate any of the arbitrary constants in the metric to zero, we find the solution is given in terms of the general Heun function, apart from some simple functions multiplying this solution. This is also true, if we equate one of the constants $Q_0$ or $a_1$ to zero. When both the NUT-related constant $a_1$ and $Q_0$ are zero, the singly confluent Heun function is the solution. When we also equate the constant $ν_0$ to zero, we get the double confluent Heun-type solution. In the latter two cases, we have an exponential and two monomials raised to powers multiplying the Heun type function. Thus, we generalize the Batic et al. result for type-D metrics for this metric and show that all variations of the Wahlquist metric give Heun type solutions.
description: 11 pages, 4 figures. Matches the published version
SND-MAC: An Efficient Media Access Control Method for Integrated Services in High Speed Wireless Networks
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 100503 Computer Communications Networks
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: With the development of the wireless communication technology): a wide range of services such as the voice, video, and data communication should be provided to users. To support integrated services, efficient Medium Access Control (MAC) methods should be developed. In this paper; a new MAC, reservation-scheme and contention-scheme combined, termed the Sequence Number based Dynamic MAC (SND-MAC), is proposed to efficiently realize the integrated service in wireless communication networks. The SND-MAC can fit for the integrated service overload in the network adaptively to keep the performance always good. The reservation scheme used in the Heavy Overload Mode (HOM) of the SND-MAC is different from traditional ones in the sense that wireless terminals need not send reserve requests which will cause collisions to the control centers. The method can greatly improve the channel utility. Under the HOM of the SND-MAC, there are no collisions during the communication. No slots will be wasted and the frame can be fully utilized. Moreover no hidden terminal problems will happen. The SND-MAC will improve the system performance significantly, especially in the case where the integrated communication overload in the wireless network is heavy. It allows the voice, video and data terminals to share the wireless channel efficiently, and makes it possible to realize integrated services based on wireless networks efficiently. The SND-MAC can also be applied to wired networks with the control center such as HFC (Hybrid of Fiber and Cable) networks.
A Review on Quantitative Models for Sustainable Food Logistics Management
Creators: name: Soysal, M.
name: Bloemhof-Ruwaard, J.M.
name: Meuwissen, M.P.M.
name: Van Der Vorst, J.G.A.J.
Publisher: name: CentMA
Year: 2012
Subjects: Food logistics management; Sustainability; Quantitative models; Key performance indicators; Literature review

description: The last two decades food logistics systems have seen the transition from a focus on traditional supply chain management to food supply chain management, and successively, to sustainable food supply chain management. The main aim of this study is to identify key logistical aims in these three phases and analyse currently available quantitative models to point out modelling challenges in sustainable food logistics management (SFLM). A literature review on quantitative studies is conducted and also qualitative studies are consulted to understand the key logistical aims more clearly and to identify relevant system scope issues. Results show that research on SFLM has been progressively developing according to the needs of the food industry. However, the intrinsic characteristics of food products and processes have not yet been handled properly in the identified studies. The majority of the works reviewed have not contemplated on sustainability problems, apart from a few recent studies. Therefore, the study concludes that new and advanced quantitative models are needed that take specific SFLM requirements from practice into consideration to support business decisions and capture food supply chain dynamics.
description: International Journal on Food System Dynamics, Vol 3, No 2 (2012)
Food labelled Information: An Empirical Analysis of Consumer Preferences
Creators: name: Banterle, Alessandro
name: Cavaliere, Alessia
name: Ricci, Elena Claire
Publisher: name: CentMA
Year: 2013
Subjects: food labelling; consumer preferences; food product attributes; focus group; survey

description: This paper aims at analysing which kinds of currently labelled information are of interest and actually used by consumers, and which additional kinds could improve consumer choices. We investigate the attitude of consumers with respect to innovative strategies for the diffusion of product information, as smart-labels for mobile-phones. The empirical analysis was organised in focus groups followed by a survey on 240 consumers. Results show that the most important nutritional claims are vitamins, energy and fat content. Consumers show a high interest in the origin of the products, GMOs, environmental impact, animal welfare and type of breeding.
description: International Journal on Food System Dynamics, Vol 3, No 2 (2012)
High-Rayleigh-number convection in porous-fluid layers
Creators: name: Reun, Thomas Le
name: Hewitt, Duncan R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a numerical study of convection in a horizontal layer comprising a fluid-saturated porous bed overlain by an unconfined fluid layer. Convection is driven by a vertical, destabilising temperature difference applied across the whole system, as in the canonical Rayleigh-Bénard problem. Numerical simulations are carried out using a single-domain formulation of the two-layer problem based on the Darcy-Brinkman equations. We explore the dynamics and heat flux through the system in the limit of large Rayleigh number, but small Darcy number, such that the flow exhibits vigorous convection in both the porous and the unconfined fluid regions, while the porous flow still remains strongly confined and governed by Darcy's law. We demonstrate that the heat flux and average thermal structure of the system can be predicted using previous results of convection in individual fluid or porous layers. We revisit a controversy about the role of subcritical "penetrative convection" in the porous medium, and confirm that such induced flow does not contribute to the heat flux through the system. Lastly, we briefly study the temporal coupling between the two layers and find that the turbulent fluid convection above acts as a low-pass filter on the longer-timescale variability of convection in the porous layer.
description: Accepted for publication in Journal of Fluid Mechanics, 25 pages, 13 figures
1/f noise in a dilute GaAs two-dimensional hole system in the insulating phase
Creators: name: Deville, G.
name: Leturcq, R.
name: L'Hote, D.
name: Tourbot, R.
name: Mellor, C. J.
name: Henini, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have measured the resistance and the 1/f resistance noise of a two-dimensional low density hole system in a high mobility GaAs quantum well at low temperature. At densities lower than the metal-insulator transition one, the temperature dependence of the resistance is either power-like or simply activated. The noise decreases when the temperature or the density increase. These results contradict the standard description of independent particles in the strong localization regime. On the contrary, they agree with the percolation picture suggested by higher density results. The physical nature of the system could be a mixture of a conducting and an insulating phase. We compare our results with those of composite thin films.
description: 4 pages, 3 figures; to appear in Physica E (EP2DS-16 proceedings)
Time-delayed quantum feedback and incomplete decoherence suppression with no-knowledge measurement
Creators: name: Saiphet, Jirawat
name: Suwanna, Sujin
name: Carvalho, André R. R.
name: Chantasri, Areeya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The no-knowledge quantum feedback was proposed by Szigeti et al., Phys. Rev. Lett. 113, 020407 (2014), as a measurement-based feedback protocol for decoherence suppression for an open quantum system. By continuously measuring environmental noises and feeding back controls on the system, the protocol can completely reverse the measurement backaction and therefore suppress the system's decoherence. However, the complete decoherence cancellation was shown only for the instantaneous feedback, which is impractical in real experiments. Therefore, in this work, we generalize the original work and investigate how the decoherence suppression can be degraded with unavoidable delay times, by analyzing non-Markovian average dynamics. We present analytical expressions for the average dynamics and numerically analyze the effects of the delayed feedback for a coherently driven two-level system, coupled to a bosonic bath via a Hermitian coupling operator. We also find that, when the qubit's unitary dynamics does not commute with the measurement and feedback controls, the decoherence rate can be either suppressed or amplified, depending on the delay time.
description: 10 pages and 5 figures