643 research outputs found
Quantum Dissension: Generalizing Quantum Discord for Three-Qubit States
We introduce the notion of quantum dissension for a three-qubit system as a
measure of quantum correlations. We use three equivalent expressions of
three-variable mutual information. Their differences can be zero classically
but not so in quantum domain. It generalizes the notion of quantum discord to a
multipartite system. There can be multiple definitions of the dissension
depending on the nature of projective measurements done on the subsystems. As
an illustration, we explore the consequences of these multiple definitions and
compare them for three-qubit pure and mixed GHZ and W states. We find that
unlike discord, dissension can be negative. This is because measurement on a
subsystem may enhance the correlations in the rest of the system. This approach
can pave a way to generalize the notion of quantum correlations in the
multiparticle setting.Comment: 9 pages 6 figures typo fixed and some arguments adde
Surface modification of polymer nanocomposites by glow discharge plasma treatment
Systematic study was carried out to characterize the effects of Argon ion plasma on nanocomposite
polymer membrane. Nanoparticles of cobalt (Co) are synthesized by chemical
root. 20 micron nanocomposite polymeric membranes were prepared using solution casting
and spin coating method. Argon ion plasma treatment was done for these membranes.
These membranes were characterized before and after plasma treatment to make comparative
study by different technique such as optical microscopy, SEM-scanning electron
microscope, Fourier transform infrared spectroscopy. Results show that plasma treatment
is a quite effective tool for improving surface and chemical properties of composite membranes
with unique characteristics.ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ Π²ΠΏΠ»ΠΈΠ² ΡΠΎΠ½Π½ΠΎ-ΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΎΡ ΠΎΠ±ΡΠΎΠ±ΠΊΠΈ Π½Π° Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½ΠΈ Π·
Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»ΡΠΌΠ΅ΡΡ. ΠΠ°Π½ΠΎΡΠ°ΡΡΠΈΠ½ΠΊΠΈ ΠΊΠΎΠ±Π°Π»ΡΡΡ ΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΎ Ρ
ΡΠΌΡΡΠ½ΠΈΠΌ ΡΠΈΠ½ΡΠ΅Π·ΠΎΠΌ. ΠΠ΅ΠΌΠ±ΡΠ°Π½ΠΈ Π·Π°Π²ΡΠΎΠ²ΡΠΊΠΈ 20 mm Π²ΠΈΠ³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΎ Π½Π°Π½Π΅ΡΠ΅Π½Π½ΡΠΌ Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»ΡΠΌΠ΅ΡΡ Π· ΡΠΎΠ·ΡΠΈΠ½Ρ Π· ΠΏΠΎΠ΄Π°Π»ΡΡΠΎΡ ΡΠΎΠ½Π½ΠΎ-ΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΎΡ ΠΎΠ±ΡΠΎΠ±ΠΊΠΎΡ. ΠΠ΅ΠΌΠ±ΡΠ°Π½ΠΈ Π²ΠΈΠ²ΡΠ΅Π½ΠΎ ΠΏΠ΅ΡΠ΅Π΄ ΡΠ° ΠΏΡΡΠ»Ρ ΡΡ
ΠΎΠ±ΡΠΎΠ±ΠΊΠΈ ΠΏΠ»Π°Π·ΠΌΠΎΡ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΠΎΠΏΡΠΈΡΠ½ΠΎΡ ΠΌΡΠΊΡΠΎΡΠΊΠΎΠΏΡΡ, ΡΠΊΠ°Π½ΡΠ²Π½ΠΎΡ Π΅Π»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΡ ΠΌΡΠΊΡΠΎΡΠΊΠΎΠΏΡΡ ΡΠ° ΡΠ½ΡΡΠ°ΡΠ΅ΡΠ²ΠΎΠ½ΠΎΡ Π€ΡΡβΡ-ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΡΡ. ΠΠΈΡΠ²Π»Π΅Π½ΠΎ, ΡΠΎ ΡΠΎΠ½Π½ΠΎ-ΠΏΠ»Π°Π·ΠΌΠΎΠ²Π° ΠΎΠ±ΡΠΎΠ±ΠΊΠ° β Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΠΈΠΉ Π·Π°ΡΡΠ± ΠΏΠΎΠ»ΡΠΏΡΠ΅Π½Π½Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΈΡ
ΡΠ° Ρ
ΡΠΌΡΡΠ½ΠΈΡ
Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½ Π· Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ½ΠΈΡ
ΠΌΠ°ΡΠ΅ΡΡΠ°Π»ΡΠ².ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΈΠΎΠ½Π½ΠΎ-ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΠΎΠΉ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ Π½Π° ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Ρ ΠΈΠ· Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°. ΠΠ°Π½ΠΎΡΠ°ΡΡΠΈΡΡ ΠΊΠΎΠ±Π°Π»ΡΡΠ° ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠΌ ΡΠΈΠ½ΡΠ΅Π·ΠΎΠΌ. ΠΠ΅ΠΌΠ±ΡΠ°Π½Ρ ΡΠΎΠ»ΡΠΈΠ½ΠΎΠΉ 20 mm ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½Ρ Π½Π°Π½Π΅ΡΠ΅Π½ΠΈΠ΅ΠΌ Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ° Ρ ΡΠ°ΡΡΠ²ΠΎΡΠ° Ρ ΠΏΠΎΡΠ»Π΅Π΄ΡΡΡΠ΅ΠΉ ΠΈΠΎΠ½Π½ΠΎ-ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΠΎΠΉ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΎΠΉ. ΠΠ΅ΠΌΠ±ΡΠ°Π½Ρ ΠΈΠ·ΡΡΠ΅Π½Ρ Π΄ΠΎ ΠΈ ΠΏΠΎΡΠ»Π΅ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ ΠΏΠ»Π°Π·ΠΌΠΎΠΉ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ, ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ΅ΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ ΠΈ ΠΈΠ½ΡΡΠ°ΠΊΡΠ°ΡΠ½ΠΎΠΉ Π€ΡΡΡΠ΅-ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ. ΠΡΡΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΈΠΎΠ½Π½ΠΎ-ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½Π°Ρ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠ° β ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ΅ ΡΡΠ΅Π΄ΡΡΠ²ΠΎ ΡΠ»ΡΡΡΠ΅Π½ΠΈΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΡΡ
ΠΈ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΌΠ΅ΠΌΠ±ΡΠ°Π½ Ρ Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ½ΡΡ
ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ²
Moving toward lean construction through automation of planning and control in last planner system: A systematic literature review
The Last Planner System (LPS) is a production planning and control system based on Lean Construction (LC) principles. Effectively implementing the LPS in the construction industry remains challenging, impeding the realization of LC principles. Automation of planning and control in the LPS has gained attention to address this challenge. However, research exploring the state-of-the-art of such automation and its impacts on realizing LC principles is still lacking. Therefore, this study performed a systematic literature review of 112 relevant studies, identifying 50 functionalities and associated benefits of automation across six LPS stages, with the lookahead planning stage having the maximum functionalities. Analyzing their interactions with LC principles revealed that automated planning and control in the LPS can support achieving ten LC principles. Future research directions are suggested in areas such as constraint management, knowledge reuse, dynamic replanning, and construction workforce training
Modulation Instability of Ultrashort Pulses in Quadratic Nonlinear Media beyond the Slowly Varying Envelope Approximation
We report a modulational instability (MI) analysis of a mathematical model
appropriate for ultrashort pulses in cascaded quadratic-cubic nonlinear media
beyond the so-called slowly varying envelope approximation. Theoretically
predicted MI properties are found to be in good agreement with numerical
simulation. The study shows the possibility of controlling the generation of MI
and formation of solitons in a cascaded quadratic-cubic media in the few cycle
regimes. We also find that stable propagation of soliton-like few-cycle pulses
in the medium is subject to the fulfilment of the modulation instability
criteria
Entanglement dynamics of three-qubit states in noisy channels
We study entanglement dynamics of the three-qubit system which is initially
prepared in pure Greenberger-Horne- Zeilinger (GHZ) or W state and transmitted
through one of the Pauli channels or the
depolarizing channel. With the help of the lower bound for three-qubit
concurrence we show that the W state preserves more entanglement than the GHZ
state in transmission through the Pauli channel . For the Pauli
channels and the depolarizing channel, however, the
entanglement of the GHZ state is more resistant against decoherence than the
W-type entanglement. We also briefly discuss how the accuracy of the lower
bound approximation depends on the rank of the density matrix under
consideration.Comment: 2 figures, 32 reference
XES, XESame, and ProM 6
Process mining has emerged as a new way to analyze business processes based on event logs. These events logs need to be extracted from operational systems and can subsequently be used to discover or check the conformance of processes. ProM is a widely used tool for process mining. In earlier versions of ProM, MXML was used as an input format. In future releases of ProM, a new logging format will be used: the eXtensible Event Stream (XES) format. This format has several advantages over MXML. The paper presents two tools that use this format - XESame and ProM 6 - and highlights the main innovations and the role of XES. XESame enables domain experts to specify how the event log should be extracted from existing systems and converted to XES. ProM 6 is a completely new process mining framework based on XES and enabling innovative process mining functionality
Spectral Dependence of Polarized Radiation due to Spatial Correlations
We study the polarization of light emitted by spatially correlated sources.
We show that in general polarization acquires nontrivial spectral dependence
due to spatial correlations. The spectral dependence is found to be absent only
for a special class of sources where the correlation length scales as the
wavelength of light. We further study the cross correlations between two
spatially distinct points that are generated due to propagation. It is found
that such cross correlation leads to sufficiently strong spectral dependence of
polarization which can be measured experimentally.Comment: 5 pages, 4 figure
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Non-paraxial Split-step Finite-difference Method for Beam Propagation
A method based on symmetrized splitting of the propagation operator in the finite difference scheme for non-paraxial beam propagation is presented. The formulation allows the solution of the second order scalar wave equation without having to make the slowly varying envelope and one-way propagation approximations. The method is highly accurate and numerically efficient. Unlike most PadΓ© approximant based methods, it is non-iterative in nature and requires less computation. The method can be used for bi-directional propagation as well
Translating Message Sequence Charts to other Process Languages Using Process Mining
Message Sequence Charts (MSCs) are often used by software analysts when discussing the behavior of a system with different stakeholders. Often such discussions lead to more complete behavioral models in the form of, e.g., Event-driven Process Chains (EPCs), Unified Modeling Language (UML), activity diagrams, Business Process Modeling Notation (BPMN) models, Petri nets, etc. Process mining on the other hand, deals with the problem of constructing complete behavioral models by analyzing event logs of information systems. In contrast to existing process mining techniques, where logs are assumed to only contain implicit information, the approach presented in this paper combines the explicit knowledge captured in individual MSCs and the techniques and tools available in the process mining domain. This combination allows us to discover high-quality process models. To constructively add to the existing work on process mining, our approach has been implemented in the process mining framework ProM (www.processmining.org)
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