cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Establishing contextually aware sensors for elderly activity monitoring systems
Creators: name: Power, Luke
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 99999 Engineering not elsewhere classified
subject: FOS: Other engineering and technologies

description: Homecare systems have become a focus of research due to shifting care requirements of the elderly, with the home becoming a centre of care provision. Hospitals are reaching their capacity to provide services to this growing elderly population, and with the number of homecare professionals dwindling, solutions are required. Changing requirements, due to the increasing prevalence of non-communicable diseases, leads research to examine lifestyle metrics such as activity while monitoring home patients. Devices used to monitor these activities described in the literature however, express issues in establishing consistent activity determination, distinguishing between the contextually ambiguous actions of an occupant and ambiguity on data privacy. This research describes an information health system (IHS) to address the potential gaps in the area which are in line with shifting care requirements and a greater focus on the informal care provider in the absence of professional providers. The proposed care system will seek input from these stakeholders using surveys in a bid to establish overall feasibility in the space. Monitoring is achieved by creating a model of patient care requirements. Experimentation will examine monitoring devices as a capable standard to not only locate occupants within a home with a verifiable degree of accuracy but to determine care outcomes by explaining context within these locations using ADL and the results from the key stakeholder survey. Data captured is evaluated to determine activity and form a sensor driven care model, captured data is stored locally to alleviate privacy concerns associated with sensor device limitations. Contextual awareness within this data is examined by observing occupants interacting with ‘unique’ objects of interest (OOI) or the change of on-body sensor ques, such as posture or heart rate. Sensors are shown to be effaceable in this environment while fulfilling the stated care requirements of ADL, additional experiments seek to establish privacy. Novel validation methods were used to classify activity captured using the examined IHS devices. From these experiments, this research will attempt to establish sensor driven devices as the optimal approach to homecare due to the accuracy, novel examination of context, interoperability and low maintenance.
Factorizations of Rational Matrix Functions with Application to Discrete Isomonodromic Transformations and Difference Painlevé Equations
Creators: name: Dzhamay, Anton
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 39A10 (Primary) 14H70, 70H06, 34M55 (Secondary)

description: We study factorizations of rational matrix functions with simple poles on the Riemann sphere. For the quadratic case (two poles) we show, using multiplicative representations of such matrix functions, that a good coordinate system on this space is given by a mix of residue eigenvectors of the matrix and its inverse. Our approach is motivated by the theory of discrete isomonodromic transformations and their relationship with difference Painlevé equations. In particular, in these coordinates, basic isomonodromic transformations take the form of the discrete Euler-Lagrange equations. Secondly we show that dPV equations, previously obtained in this context by D. Arinkin and A. Borodin, can be understood as simple relationships between the residues of such matrices and their inverses.
description: 9 pages; minor typos fixed, journal reference added
title: GSICS quarterly. Volume 3, number 3 (2009)
Creators: name: Global Space-Based Inter-Calibration System Coordination Center,
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, Center for Satellite Applications and Research
Year: 2009
Subjects: subject: Satellite meteorology
subject: Global Observing System (Meteorology)

description: GSICS Quarterly is a newsletter designed to communicate GSICS activities to all GSICS members and partners, as well as to satellite data users and policy makers
A critical reflection on the introduction and implementation of a
      homeworking policy in a United Kingdom government department
Creators: name: Marshall-Camm, Judith
Publisher: name: Lancaster University
Year: 2019

description: This study provides a critical reflection on the introduction and
      implementation of a homeworking policy in a United Kingdom Government
      Department from the perspective of managers and employees. Prior to the
      introduction of the policy, homeworking had been available on an
      individually negotiated basis for a minority of individuals. The policy
      set out the expectation that all employees would work 1-2 days per week
      from home, the aim being to achieve a change in working methods and a
      reduction in office space. Within the literature there is a significant
      amount of research which looks at homeworking when it is available as a
      perk to certain employees, there is very little research from
      organisations where it is an expectation applicable to all. The research
      adopts a phenomenological philosophy and an inductive approach. The
      research strategy was an exploratory case study using focus groups
      initially to provide insight into overarching themes and refine and
      validate questions for subsequent interviews. Employees were segmented
      into three groups, homeworkers, non-homeworkers and managers for both the
      focus groups and the interviews. Coding was carried manually to identify
      themes. The research found despite the clear expectation of homeworking
      set out in the policy the desired outcome was not achieved. Despite
      extensive communication about the change employees were confused and
      interpreted the messages differently. Managers were content to be relieved
      of the decision making around homeworking requests. Not all employees
      welcomed the prospect of homeworking and the findings support other
      research in identifying barriers to homeworking, for example suitability
      of property and family life. Trust between employees was an issue, with
      concerns raised about some homeworkers not having enough suitable work to
      do from home. Finally, the findings show all groups expressed concern
      about the adverse impact on career progression.
Hamiltonian intermittency and Lévy flights in the three-body problem
Creators: name: Shevchenko, Ivan I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chaotic Dynamics (nlin.CD)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We consider statistics of the disruption and Lyapunov times in an hierarchical restricted three-body problem. We show that at the edge of disruption the orbital periods and the size of the orbit of the escaping body exhibit Lévy flights. Due to them, the time decay of the survival probability is heavy-tailed with the power-law index equal to -2/3, while the relation between the Lyapunov and disruption times is quasilinear. Applicability of these results in an "hierarchical resonant scattering" setting for a three-body interaction is discussed.
description: 34 pages, including 9 figures
The gas fired pottery kiln design and use for schools
Creators: name: Place, Martin Halstead
Publisher: name: University of British Columbia
Year: 2010

description: At the time of publication of this thesis little if any reliable technical data was available on the design, construct ion and operation of gas fired pottery kilns. A few publications have some information but for the most part very little information on the proportional relationships of the various' aspects of gas kiln designs are available. If one was to use only the information available in previous publications, inefficient, unsafe and illegally built kilns could easily be manufactured. Students, teachers and various public institutions are finding it necessary to design, build and operate gas kilns to fulfill the education of their students or fully explain the traditional methods of combustion firing and its unique results. It becomes more apparent that guidelines are necessary so that an efficient, safe and inexpensive kiln can be built and utilized without hampering the usefulness of a variety of designs available. This search for information about kiln design and construction had two main directions, the author consulted authorities having jurisdiction over gas kilns in British Columbia and Alberta and secondly he built and tested kilns using the data collected. These two sources of information were compared in relevant locations to publications available up to publication time. For the most part the investigation into kiln operation comes from informal instruction from a number of successful kiln builders and operators and provincial gas inspectors. It has been the researcher's finding that there is a very strong indication that the parameters given are a reliable and useful guide to safe, efficient and pollution controlled kiln design. The main parts of kiln design seem to be dimensional and dynamically interrelated and the parameters of design have shown a very high improvement in efficiency and pollution control which are important benefits. The dynamics of kiln design are only preliminary and broad in this thesis. Much more could be done with closer testing using more elaborate equipment and controls and with the guidelines used from this paper and further investigation even further improvements in design parameters may improve the efficiency and safety of future kilns. This thesis is designed to serve as a handbook which is the result of applied research. The thesis is set out in three parts. A brief essay establishing a rational for having a gas kiln, the model for designing a gas fired pottery kiln, and lastly examples of research and kiln firing logs from kilns designed using the model. Methods of construction, brick laying application of insulation and arch construction are not covered in this paper as they are well covered in the Olsen and Rhodes books. (see bibliography)
title: A Study of Right Truncated Lomax Rayleigh Distribution and Application for Group Acceptance Sampling Plan
Creators: name: Kanittha Yimnak
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Group acceptance sampling plan
Lifetime distribution
Lomax-Rayleigh distribution
Truncated distribution

description: Science & Technology Asia, 30, 1, 14-24
R-matrix formalism for electron scattering in two dimensions
Creators: name: Racec, P. N.
name: Racec, E. R.
name: Neidhardt, H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the scattering phenomena in two dimensions produced by a general finite-range nonseparable potential. This situation can appear either in a Cartesian geometry or in a heterostructure with cylindrical symmetry. Increasing the dimensionality of the scattering problem new processes as the scattering between conducting channels and the scattering from conducting to evanescent channels are allowed. For certain values of the energy called resonance energy the transmission through the scattering region changes dramatically in comparison with an one-dimensional problem. If the potential has an attractive character even the evanescent channels can be seen as dips of the total transmission. The multi-channel current scattering matrix is determined using its representation in terms of the R-matrix. The resonant transmission peaks are characterized quantitatively through the poles of the current scattering matrix. Detailed maps of the localization probability density sustain the physical interpretation of the resonances. Our formalism is applied to a quantum dot in a two-dimensional electron gas and to a conical quantum dot dot embedded inside a cylindrical nanowire.
description: RevTex4, 18 pages, 10 figures. Joint IFIN-HH, ICTP, IAEA Workshop "Trends in Nanoscience: Theory, Experiments, Technology", August 23-30, 2009, Sibiu, Romania
Gupta-Feynman based Quantum Field Theory of Einstein's Gravity
Creators: name: Plastino, A.
name: Rocca, M. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: This paper is an {\sf application} to Einstein's gravity (EG) of the mathematics developed in A. Plastino, M. C. Rocca: J. Phys. Commun. {\bf 2}, 115029 (2018). We will quantize EG by appeal to the most general quantization approach, the Schwinger-Feynman variational principle, which is more appropriate and rigorous that the functional integral method, when we are in the presence of derivative couplings \nd We base our efforts on works by Suraj N. Gupta and Richard P. Feynman so as to undertake the construction of a Quantum Field Theory (QFT) of Einstein Gravity (EG). We explicitly use the Einstein Lagrangian elaborated by Gupta \cite{g1} but choose a new constraint for the theory that differs from Gupta's one. In this way, we avoid the problem of lack of unitarity for the $S$ matrix that afflicts the procedures of Gupta and Feynman. Simultaneously, we significantly simplify the handling of constraints. This eliminates the need to appeal to ghosts for guarantying the unitarity of the theory. Our ensuing approach is obviously non-renormalizable. However, this inconvenience can be overcome by appealing tho the mathematical theory developed by Bollini et al. \cite{tp3,tp18,tp19,tp20,pr} Such developments were founded in the works of Alexander Grothendieck \cite{gro} and in the theory of Ultradistributions of Jose Sebastiao e Silva \cite{tp6} (also known as Ultrahyperfunctions). Based on these works, we have constructed a mathematical edifice, in a lapse of about 25 years, that is able to quantize non-renormalizable Field Theories (FT). Here we specialize this mathematical theory to treat the quantum field theory of Einsteins's gravity (EG). Because we are using a Gupta-Feynman inspired EG Lagrangian, we are able to evade the intricacies of Yang-Mills theories.
description: 16 pages
Dynamical systems associated with crossed products
Creators: name: Svensson, Christian
name: Silvestrov, Sergei
name: de Jeu, Marcel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 47L65, 16S35, 37B05, 54H20

description: In this paper, we consider both algebraic crossed products of commutative complex algebras A with the integers under an automorphism of A, and Banach algebra crossed products of commutative C^*-algebras A with the integers under an automorphism of A. We investigate, in particular, connections between algebraic properties of these crossed products and topological properties of naturally associated dynamical systems. For example, we draw conclusions about the ideal structure of the crossed product by investigating the dynamics of such a system. To begin with, we recall results in this direction in the context of an algebraic crossed product and give simplified proofs of generalizations of some of these results. We also investigate new questions, for example about ideal intersection properties of algebras properly between the coefficient algebra A and its commutant A'. Furthermore, we introduce a Banach algebra crossed product and study the relation between the structure of this algebra and the topological dynamics of a naturally associated system.
description: 13 pages. 2 references addes and minor text improvements made
title: A New Existence and Stability Results of a Backward Impulsive FDEs
Creators: name: Samei, Mohammad Esmael
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Caputo fractional derative
FDEs
Generalized Hyers-Ulam stability
Localand non-local backward problem

description: Science & Technology Asia, 30, 1, 25-53
On the dynamics between gravity and entanglement
Creators: name: MV, Pradosh Keshav
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Recent developments on Bell's experiments demonstrate that entanglement could indeed eliminate the gap between classical and quantum physics. At the same time, it is difficult for a classical theory to include a particular feature like entanglement without compromising the theory's smooth working on a four-dimensional scale geometry. A unified theory should reconsider this difficulty. On the other hand, pregeometry hold the assumption of a non-commutative space where the Requardt-Roy model seems to be a promising one. From the ordinary five-dimensional approach first initiated by Kaluza-Klein, a toy model is proposed to show the insignificant description of gravity at Planck's scale physics. It is found that the classical nature of quantum correlations are fine tuned within the geometry of space-time at four dimensions. Such a nature can be better understood by studying the pregeometric effects of gravity at five-dimensions. A combined description of gravity and entanglement is found sufficient to explain the fundamental difficulties of discrete space-time manifolds in both the theories.
description: 26 pages, 1 figure
Supplementary Results Section from Schizotypy is associated with difficulties detecting emotional facial expressions
Creators: name: Uono, Shota
name: Sato, Wataru
name: Sawada, Reiko
name: Kawakami, Sayaka
name: Yoshimura, Sayaka
name: Toichi, Motomi
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: The results for ratings of naturalness and familiarity
title: Closed Form of Nearest Point of Linear Pentagonal Fuzzy Number and its Application to Course Assignment Problem with Fuzziness in Preference Level
Creators: name: Worrawate Leela-Apiradee
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Fuzzy preference
Nearest point
Pentagonal fuzzy number
Teaching assign-ment problem

description: Science & Technology Asia, 30, 1, 54-69
title: Hydroxyapatite/MgO Composites from Biowaste Pokea Clam Shells (Batissa violacea): Structure and Mechanical Properties for Medical Application
Creators: name: Laode A. Kadir
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Hydroxyapatite
HAp-MgO composite
Hydrothermal
Pokea clam shells
Mechanical properties

description: Science & Technology Asia, 30, 1, 70-78
Algebraic dependence of commuting elements in algebras
Creators: name: Silvestrov, Sergei
name: Svensson, Christian
name: de Jeu, Marcel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Rings and Algebras (math.RA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 16S99, 81S05, 39A13

description: The aim of this paper to draw attention to several aspects of the algebraic dependence in algebras. The article starts with discussions of the algebraic dependence problem in commutative algebras. Then the Burchnall-Chaundy construction for proving algebraic dependence and obtaining the corresponding algebraic curves for commuting differential operators in the Heisenberg algebra is reviewed. Next some old and new results on algebraic dependence of commuting q-difference operators and elements in q-deformed Heisenberg algebras are reviewed. The main ideas and essence of two proofs of this are reviewed and compared. One is the algorithmic dimension growth existence proof. The other is the recent proof extending the Burchnall-Chaundy approach from differential operators and the Heisenberg algebra to the q-deformed Heisenberg algebra, showing that the Burchnall-Chaundy eliminant construction indeed provides annihilating curves for commuting elements in the q-deformed Heisenberg algebras for q not a root of unity.
description: LaTeX, 14 pages, no figures
title: Circular Bootstrap on Residuals for Interval Forecasting in K-NN Regression: A Case Study on Durian Exports
Creators: name: Patchanok Srisuradetchai
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Circular bootstrap
ETS
Interval forecasting
Probabilistic forecasting
SARIMA

description: Science & Technology Asia, 30, 1, 79-94
Quantum Gravity Corrections to the Mean Field Theory of Nucleons
Creators: name: Naqash, Abrar Ahmed
name: Majumder, Barun
name: Mitra, Soumodeep
name: Bangle, Moomin Mushtaq
name: Faizal, Mir
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this paper, we analyze the correction to the mean field theory potential for a system of nucleons. It will be argued that these corrections can be obtained by deforming the Schrödinger's equation describing a system of nucleons by a minimal length in the background geometry of space-time. This is because such a minimal length occurs due to quantum gravitational effects, and modifies the low energy quantum mechanical systems. In fact, as the mean field potential for the nucleons is represented by the Woods-Saxon potential, we will explicitly analyze such corrections to this potential. We will obtain the corrections to the energy eigenvalues of the deformed Schrödinger's equation for the Woods-Saxon potential. We will also construct the wave function for the deformed Schrödinger's equation.
description: Accepted in The European Physical Journal C, in press
title: Effect of Distance and Radionuclide Activity on Radiation Dose Exposure around the Chernobyl Nuclear Power Plant (ChNPP): Analysis with Poisson Regression Models and Correlation Tests
Creators: name: Nadrah Nadrah
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Chernobyl nuclear power plant
Dose distribution
Radioactive isotopes
Radi-ation exposure
Spatial analysis

description: Science & Technology Asia, 30, 1, 95-116
Nature of the Mott transition in Ca2RuO4
Creators: name: Gorelov, E.
name: Karolak, M.
name: Wehling, T. O.
name: Lechermann, F.
name: Lichtenstein, A. I.
name: Pavarini, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the origin of the temperature-induced Mott transition in Ca2RuO4. As a method we use the local-density approximation+dynamical mean-field theory. We show the following. (i) The Mott transition is driven by the change in structure from long to short c-axis layered perovskite (L-Pbca to S-Pbca); it occurs together with orbital order, which follows, rather than produces, the structural transition. (ii) In the metallic L-Pbca phase the orbital polarization is ~0. (iii) In the insulating S-Pbca phase the lower energy orbital, ~xy, is full. (iv) The spin-flip and pair-hopping Coulomb terms reduce the effective masses in the metallic phase. Our results indicate that a similar scenario applies to Ca_{2-x}Sr_xRuO_4 (x<0.2). In the metallic x< 0.5 structures electrons are progressively transferred to the xz/yz bands with increasing x, however we find no orbital-selective Mott transition down to ~300 K.
description: 4 pages, 3 figures; published version
Real Paley-Wiener theorems and local spectral radius formulas
Creators: name: Andersen, Nils Byrial
name: de Jeu, Marcel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 42B10, 47A11

description: We systematically develop real Paley-Wiener theory for the Fourier transform on R^d for Schwartz functions, L^p-functions and distributions, in an elementary treatment based on the inversion theorem. As an application, we show how versions of classical Paley-Wiener theorems can be derived from the real ones via an approach which does not involve domain shifting and which may be put to good use for other transforms of Fourier type as well. An explanation is also given why the easily applied classical Paley-Wiener theorems are unlikely to be able to yield information about the support of a function or distribution which is more precise than giving its convex hull, whereas real Paley-Wiener theorems can be used to reconstruct the support precisely, albeit at the cost of combinatorial complexity. We indicate a possible application of real Paley-Wiener theory to partial differential equations in this vein and furthermore we give evidence that a number of real Paley-Wiener results can be expected to have an interpretation as local spectral radius formulas. A comprehensive overview of the literature on real Paley-Wiener theory is included.
description: 27 pages, no figures. Reference updated. Final version, to appear in Trans. Amer. Math. Soc
On the Banach $*$-algebra crossed product associated with a topological dynamical system
Creators: name: de Jeu, Marcel
name: Svensson, Christian
name: Tomiyama, Jun
Publisher: name: arXiv
Year: 2009
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47L65, 46H10, 37B05, 54H20

description: Given a topological dynamical system $Σ= (X, σ)$, where $X$ is a compact Hausdorff space and $σ$ a homeomorphism of $X$, we introduce the associated Banach $^*$-algebra crossed product $\ell^1 (Σ)$ and analyse its ideal structure. This algebra is the Banach algebra most naturally associated with the dynamical system, and it has a richer structure than its well studied $C^*$-envelope, as becomes evident from the possible existence of non-self-adjoint closed ideals. This paper initiates the study of these algebras and links their ideal structure to the topological dynamics. It is determined when exactly the algebra is simple, or prime, and when there exists a non-self-adjoint closed ideal. In addition, a structure theorem is obtained for the case when $X$ consists of one finite orbit, and the algebra is shown to be Hermitian if $X$ is finite. The key to these results lies in analysing the commutant of $C(X)$ in the algebra, which can be shown to be a maximal abelian subalgebra with non-zero intersection with each non-zero closed ideal.
description: 19 pages. Some typos corrected and minor changes in presentation. Final version, to appear in Journal of Functional Analysis
title: Interval-Valued Picture Fuzzy Ideals of Semigroups
Creators: name: Winita Yonthanthum
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Interval-valued fuzzy sets
Interval-valued picture fuzzy sets
Interval-valuedpicture fuzzy ideals

description: Science & Technology Asia, 30, 1, 117-137
Signatures of extended radio emission from escaping electrons in the Lighthouse Nebula
Creators: name: Bordas, Pol
name: Zhang, Xiying
name: Bosch-Ramon, Valentí
name: Paredes, Josep Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Several supersonic runaway pulsar wind nebulae (sPWNe) with jet-like extended structures have been recently discovered in X-rays. If these structures are the product of electrons escaping the system and diffusing into the surrounding interstellar medium, they can produce a radio halo extending for several arcmin around the source. We model the expected radio emission in this scenario in the Lighthouse Nebula sPWN. We assume a constant particle injection rate during the source lifetime, and isotropic diffusion into the surrounding medium. Our predictions strongly depend on the low- and high-energy cutoffs given in the particle distribution. Our results indicate that extended radio emission can be detected from the Lighthouse Nebula without the need to invoke extreme values for the model parameters. We provide synthetic synchrotron maps that can be used to constrain these results with observations by current highly sensitive radio instruments.
description: Accepted for publication in A&A
Classification of E_0--Semigroups by Product Systems
Creators: name: Skeide, Michael
Publisher: name: arXiv
Year: 2009
Subjects: subject: Operator Algebras (math.OA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 46L55, 46L53, 60J25, 46L08

description: This paper presents the complete classification of E_0-semigroups by product systems in the case of von Neumann correspondences, and under countability assumptions in the case of C*-correspondences.
description: 103 pages; to appear in Memoirs of the AMS. Further reaching Revision; thanks to the Referee! Theorem B.34 has now a proof
title: Enhancing Olive Mill Wastewater Treatment: A Study of pH Influence in Multi-Step Column
Creators: name: Elsherif, Khaled
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Activatedcarbon
Biosorbents
Environmentalpollution
Olivemillwastewater
Wastewater treatment

description: Science & Technology Asia, 30, 1, 138-157
A Design Methodology for Computer Security Testing
Creators: name: Ramilli, Marco <1983>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: ING-INF/05 Sistemi di elaborazione delle informazioni

description: The field of "computer security" is often considered something in between Art and Science. This is partly due to the lack of widely agreed and standardized methodologies to evaluate the degree of the security of a system. This dissertation intends to contribute to this area by investigating the most common security testing strategies applied nowadays and by proposing an enhanced methodology that may be effectively applied to different threat scenarios with the same degree of effectiveness. 

Security testing methodologies are the first step towards standardized security evaluation processes and understanding of how the security threats evolve over time. This dissertation analyzes some of the most used identifying differences and commonalities, useful to compare them and assess their quality. 

The dissertation then proposes a new enhanced methodology built by keeping the best of every analyzed methodology. The designed methodology is tested over different systems with very effective results, which is the main evidence that it  could really be applied in practical cases. Most of the dissertation discusses and proves how the presented testing methodology could be applied to such different systems and even to evade security measures by inverting goals and scopes. Real cases are often hard to find in methodology' documents, in contrary this dissertation wants to show real and practical cases offering technical details about how to apply it. 

Electronic voting systems are the first field test considered, and  Pvote and Scantegrity are the two tested electronic voting systems. The usability and effectiveness of the designed methodology for electronic voting systems is proved thanks to this field cases analysis. Furthermore reputation and anti virus engines have also be analyzed with similar results. 

The dissertation concludes by presenting some general guidelines to build a coordination-based approach of electronic voting systems to improve the security without decreasing the system modularity.
Multi-mode entanglement of N harmonic oscillators coupled to a non-Markovian reservoir
Creators: name: Li, Gao-xiang
name: Sun, Li-hui
name: Ficek, Zbigniew
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multi-mode entanglement is investigated in the system composed of $N$ coupled identical harmonic oscillators interacting with a common environment. We treat the problem very general by working with the Hamiltonian without the rotating-wave approximation and by considering the environment as a non-Markovian reservoir to the oscillators. We invoke an $N$-mode unitary transformation of the position and momentum operators and find that in the transformed basis the system is represented by a set of independent harmonic oscillators with only one of them coupled to the environment. Working in the Wigner representation of the density operator, we find that the covariance matrix has a block diagonal form that it can be expressed in terms of multiples of $3\times 3$ and $4\times 4$ matrices. This simple property allows to treat the problem to some extend analytically. We illustrate the advantage of working in the transformed basis on a simple example of three harmonic oscillators and find that the entanglement can persists for long times due to presence of constants of motion for the covariance matrix elements. We find that, in contrast to what one could expect, a strong damping of the oscillators leads to a better stationary entanglement than in the case of a weak damping.
description: 21 pages, 4 figures
Extending representations of normed algebras in Banach spaces
Creators: name: Dirksen, Sjoerd
name: de Jeu, Marcel
name: Wortel, Marten
Publisher: name: arXiv
Year: 2009
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46H25 (Primary) 46H10, 46H15 (Secondary)

description: Let X be a non-degenerate left Banach module over a normed algebra A having a bounded approximate left identity. We show that, if A is a left ideal of a larger algebra, then this representation can be extended to a representation of the larger algebra. Based on this result, we study in detail the existence and properties of representations of the various centralizer algebras of A which are compatible with the original representation of A. As a special case we obtain that, if A embeds as a topological algebra into the bounded operators on X, then the left centralizer algebra of $A$ embeds as a topological algebra as the left normalizer of the image, and the double centralizer algebra of A embeds as a topological algebra as the normalizer of the image. We also consider ordered and involutive contexts, and cover the right-sided cases, which are not always the obvious analogues of the left-sided cases, in detail as well.
description: 22 pages. Minor changes in presentation. To appear in the proceedings (Contemporary Mathematics) of "Operator Structures and Dynamical Systems" (Lorentz Center, Leiden, Netherlands, July 21 - 25, 2008)
Optical Design for Automatic Identification and Portable Systems
Creators: name: De Marco, Luisa <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: ING-INF/02 Campi elettromagnetici

description: This thesis proposes design methods and test tools, for optical systems, which may be used in an industrial environment, where not only precision and reliability but also ease of use is important. The approach to the problem has been conceived to be as general as possible, although in the present work, the design of a portable device for automatic identification applications has been studied, because this doctorate has been funded by Datalogic Scanning Group s.r.l., a world-class producer of barcode readers.
The main functional components of the complete device are: electro-optical imaging, illumination and pattern generator systems. 
For what concerns the electro-optical imaging system, a characterization tool and an analysis one has been developed to check if the desired performance of the system has been achieved. Moreover, two design tools for optimizing the imaging system have been implemented. The first optimizes just the core of the system, the optical part, improving its performance ignoring all other contributions and generating a good starting point for the optimization of the whole complex system. The second tool optimizes the system taking into account its behavior with a model as near as possible to reality including optics, electronics and detection.
For what concerns the illumination and the pattern generator systems, two tools have been implemented. The first allows the design of free-form lenses described by an arbitrary analytical function exited by an incoherent source and is able to provide custom illumination conditions for all kind of applications. The second tool consists of a new method to design Diffractive Optical Elements excited by a coherent source for large pattern angles using the Iterative Fourier Transform Algorithm.
Validation of the design tools has been obtained, whenever possible, comparing the performance of the designed systems with those of fabricated prototypes. In other cases simulations have been used.
title: On Designing of Modified Exponentially Weighted Moving Average Control Chart based on Sign Rank for Zero-Inflated Data
Creators: name: Saowanit Sukparungsee
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Average run length
Median run length
Standard deviation run length
Zero-inflation binomial
Zero-inflation poisson

description: Science & Technology Asia, 30, 1, 158-176
Nonlinearities in modified gravity cosmology I: signatures of modified gravity in the nonlinear matter power spectrum
Creators: name: Cui, Weiguang
name: Zhang, Pengjie
name: Yang, Xiaohu
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A large fraction of cosmological information on dark energy and gravity is encoded in the nonlinear regime. Precision cosmology thus requires precision modeling of nonlinearities in general dark energy and modified gravity models. We modify the Gadget-2 code and run a series of N-body simulations on modified gravity cosmology to study the nonlinearities. The modified gravity model that we investigate in the present paper is characterized by a single parameter ζ, which determines the enhancement of particle acceleration with respect to general relativity (GR), given the identical mass distribution (ζ= 1 in GR). The first nonlinear statistics we investigate is the nonlinear matter power spectrum at k < 3h/Mpc, which is the relevant range for robust weak lensing power spectrum modeling at l < 2000. In this study, we focus on the relative difference in the nonlinear power spectra at corresponding redshifts where different gravity models have the same linear power spectra. This particular statistics highlights the imprint of modified gravity in the nonlinear regime and the importance to include the nonlinear regime in testing GR. By design, it is less susceptible to the sample variance and numerical artifacts. We adopt a mass assignment method based on wavelet to improve the power spectrum measurement. We run a series of tests to determine the suitable simulation specifications (particle number, box size and initial redshift). We find that, the nonlinear power spectra can differ by ~30% for 10% deviation from GR (|ζ-1| = 0.1) where the rms density fluctuations reach 10. This large difference, on one hand, shows the richness of information on gravity in the corresponding scales, and on the other hand, invalidates simple extrapolations of some existing fitting formulae to modified gravity cosmology.
description: 13 pages, 6 figures. V2, version for publication in PRD
Entagled Optical Solitons in Non-Linear Kerr Dielecrtric
Creators: name: Rybakov, Yu. P.
name: Kamalov, T. F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider optical 1D envelope solitons in Kerr dielectric with cubic non-linearity and use two solitons configurations for modelling entangled states of photons. We calculate spin, momentum and energy of solitons on the basis of approximate solutions to the nonlinear Maxwell equations and construct entangled two solitons singlet states in special stochastic representation.
description: 5 pages, no figures. arXiv admin note: substantial text overlap with arXiv:quant-ph/0703146
Local spectral radius formulas for a class of unbounded operators on Banach spaces
Creators: name: Andersen, Nils Byrial
name: de Jeu, Marcel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Spectral Theory (math.SP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We exhibit a general class of unbounded operators in Banach spaces which can be shown to have the single-valued extension property, and for which the local spectrum at suitable points can be determined. We show that a local spectral radius formula holds, analogous to that for a globally defined bounded operator on a Banach space with the single-valued extension property. An operator of the class under consideration can occur in practice as (an extension of) a differential operator which, roughly speaking, can be diagonalised on its domain of smooth test functions via a discrete transform, such that the diagonalising transform establishes an isomorphism of topological vector spaces between the domain of the differential operator, in its own topology, and a sequence space. We give concrete examples of (extensions of) such operators (constant coefficient differential operators on the d-torus, Jacobi operators, the Hermite operator, Laguerre operators) and indicate further perspectives.
description: Minor changes in presentation. 23 pages, final version, to appear in Journal of Operator Theory
Uniform approximation of homeomorphisms by diffeomorphisms
Creators: name: Müller, Stefan
Publisher: name: arXiv
Year: 2009
Subjects: subject: Dynamical Systems (math.DS)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 57R12, 57Q55, 58C35, 28D05

description: We prove that a compactly supported homeomorphism of a smooth manifold of dimension greater or equal to 5 can be approximated uniformly by compactly supported diffeomorphisms if and only if it is isotopic to a diffeomorphism. If the given homeomorphism is in addition volume preserving, then it can be approximated uniformly by volume preserving diffeomorphisms.
description: v4: 5 pages; long overdue revision; clarified and improved statements, notation, and proofs. The main theorem may already be known, but I have not been able to find a precise reference. After talking to a number of topologists without getting a satisfactory answer, I decided to write up the proof myself. Comments and references welcome
Comprehensive Plans for Improving Rural Counties
Creators: name: Solberg, Erling D.
name: Solberg, Erling D.
Publisher: name: Unknown
Year: 1972
Subjects: Community/Rural/Urban Development
Land Economics/Use
Resource /Energy Economics and Policy

description: Excerpt from the report: For many rural counties, now is the time to prepare a comprehensive plan—an overall pattern of development. A comprehensive plan shows how a county can best use what it has, to become the kind of place it wants to be. It specifies how present and future improvements and uses of land and other natural resources should be related. It is a guide to both public and private development activities.
DES Map Shows a Smoother Distribution of Matter than Expected: A Possible Explanation
Creators: name: Oks, Eugene
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The largest and most detailed map of the distribution of dark matter in the Universe has been recently created by the DES team. The distribution was found to be slightly (be few percent) smoother, less clumpy than predicted by the general relativity. This result was considered as a hint of some new physical laws. In the present paper we offer a relatively simple model that could explain the above result without resorting to any new physical laws. The model deals with the dynamics of a system consisting of a large number of gravitating neutral particles, whose mass is equal to the mass of hydrogen atoms. The central point of the model is a partial inhibition of the gravitation for a relatively small subsystem of the entire system. It would be sufficient for this subsystem to constitute just about few percent of the total ensemble of the particles for explaining the few percent more smooth distribution of dark matter (observed by the DES team) compared to the prediction of the general relativity. The most viable candidate for the dark matter particles in this model is the second flavor of hydrogen atoms (SFHA) that has only S-states and therefore does not couple to the electric dipole radiation or even to higher multipole radiation, so that the SFHA is practically dark. The SFHA has the experimental confirmation from atomic experiments, it does not go beyond the Standard Model, it is based on the standard quantum mechanics, and it explains the puzzling astrophysical observations of the redshifted line 21 cm from the early Universe. Thus, our model explaining the DES result of a little too smooth distribution of dark matter without resorting to any new physical laws seems to be self-consistent.
title: Cybersecurity Insurance Modeling Using Archimedean Copulas
Creators: name: Felivia Kusnadi
Publisher: name: Research Administration Division
publisherIdentifierScheme: ROR
Year: 2025
Subjects: Archimedean copula
Computer network
Cybersecurity insurance
Depen-dence
Virus spread

description: Science & Technology Asia, 30, 1, 177-188
Maximal abelian subalgebras and projections in two Banach algebras associated with a topological dynamical system
Creators: name: de Jeu, Marcel
name: Tomiyama, Jun
Publisher: name: arXiv
Year: 2011
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46K05 (Primary) 47L65, 46L55 (Secondary)

description: If $Σ=(X,σ)$ is a topological dynamical system, where $X$ is a compact Hausdorff space and $σ$ is a homeomorphism of $X$, then a crossed product Banach $\sp{*}$-algebra $\ell^1(Σ)$ is naturally associated with these data. If $X$ consists of one point, then $\ell^1(Σ)$ is the group algebra of the integers. The commutant $C(X)'_1$ of $C(X)$ in $\ell^1(Σ)$ is known to be a maximal abelian subalgebra which has non-zero intersection with each non-zero closed ideal, and the same holds for the commutant $C(X)'_*$ of $C(X)$ in $C^*(Σ)$, the enveloping $C^*$-algebra of $\ell^1(Σ)$. This intersection property has proven to be a valuable tool in investigating these algebras. Motivated by this pivotal role, we study $C(X)'_1$ and $C(X)'_*$ in detail in the present paper. The maximal ideal space of $C(X)'_1$ is described explicitly, and is seen to coincide with its pure state space and to be a topological quotient of $X\times\mathbb{T}$. We show that $C(X)'_1$ is hermitian and semisimple, and that its enveloping $C^*$-algebra is $C(X)'_*$. Furthermore, we establish necessary and sufficient conditions for projections onto $C(X)'_1$ and $C(X)'_*$ to exist, and give explicit formulas for such projections, which we show to be unique. In the appendix, topological results for the periodic points of a homeomorphism of a locally compact Hausdorff space are given.
description: Some typos corrected. Final version, 23 pages, to appear in Studia Mathematica