Results 31 to 40 of about 1,164,453 (292)

Monitoring of Shallow-Grooved Tramway Crossings

open access: yesCommunications, 2023
The article presents selected results and the sequencing of research into the project "Long-Term Monitoring of Rail Structures in Tramway Crossings with a Focus on Shallow-Grooved Crossings Aimed at the Optimization of their Maintenance and Noise ...
Magdalena Křečková   +1 more
doaj   +1 more source

Born-Oppenheimer Approximation near Level Crossing [PDF]

open access: yes, 2000
We consider the Born-Oppenheimer problem near conical intersection in two dimensions. For energies close to the crossing energy we describe the wave function near an isotropic crossing and show that it is related to generalized hypergeometric functions ...
A. Gordon   +26 more
core   +6 more sources

Level Crossing Analysis of Growing surfaces

open access: yes, 2002
We investigate the average frequency of positive slope $\nu_{\alpha}^{+} $, crossing the height $\alpha = h- \bar h$ in the surface growing processes. The exact level crossing analysis of the random deposition model and the Kardar-Parisi-Zhang equation ...
Barabasi A-L   +15 more
core   +1 more source

Method for pre-processing of level crossing image [PDF]

open access: yesTransport Problems, 2015
Actuality of problem in the improvement of transport safety at level crossings (LC) is caused by increasing the number of vehicles and reducing discipline of vehicle drivers.
Roman RYBALKA, Konstantin HONCHAROV
doaj  

Level Crossing Analysis of the Stock Markets

open access: yes, 2006
We investigate the average frequency of positive slope $\nu_{\alpha}^{+}$, crossing for the returns of market prices. The method is based on stochastic processes which no scaling feature is explicitly required.
Bahraminasab A Movahed M S Nassiri S D Masoudi A A   +21 more
core   +1 more source

NaI revisited: Theoretical investigation of predissociation via ultrafast XUV transient absorption spectroscopy. [PDF]

open access: yes, 2019
Avoided crossings can trigger abrupt changes of electronic character and redirect the outcomes of photochemical reactions. Here, we report a theoretical investigation into core-level spectroscopic probing of predissociation dynamics of sodium iodide (NaI)
Kobayashi, Yuki   +3 more
core   +1 more source

Semigroup Structures and Commutative Ideals of BCK-Algebras Based on Crossing Cubic Set Structures

open access: yesAxioms, 2022
First, semigroup structure is constructed by providing binary operations for the crossing cubic set structure. The concept of commutative crossing cubic ideal is introduced by applying crossing cubic set structure to commutative ideal in BCK-algebra, and
Mehmet Ali Öztürk   +2 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Safe implementation of automatic microprocessor systems of level crossing on the example of the SPA-4 system [PDF]

open access: yesTransport Problems, 2007
Fulfilling high requirements of safety and reliability is an importantquestion in devices of railway traffic control. Increased safety in computer systems is reached in the simplest way through redundancy of hardware and software, but also with other ...
Mieczysław KORNASZEWSKI   +1 more
doaj  

Quantum Phase Transitions in the Interacting Boson Model: Integrability, level repulsion and level crossing [PDF]

open access: yes, 2003
We study the quantum phase transition mechanisms that arise in the Interacting Boson Model. We show that the second-order nature of the phase transition from U(5) to O(6) may be attributed to quantum integrability, whereas all the first-order phase ...
E. A. Yuzbashyan   +4 more
core   +3 more sources

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