Results 21 to 30 of about 3,528,368 (298)
Second harmonic generation at the quantum-interference induced transparency in semiconductor quantum wells: The influence of permanent dipole moments [PDF]
The influence of permanent dipole moments of quantized states on intersubband second harmonic generation based on quantum-interference induced transparency in semiconductor quantum wells is explored using the harmonic balance method.
Ikonic, Z., Kocinac, S., Milanovic, V.
core +1 more source
Per-Spectral Characterizations Of Some Bipartite Graphs
A graph is said to be characterized by its permanental spectrum if there is no other non-isomorphic graph with the same permanental spectrum. In this paper, we investigate when a complete bipartite graph Kp,p with some edges deleted is determined by its ...
Wu Tingzeng, Zhang Heping
doaj +1 more source
Transitions into permanent employment in Spain : an empirical analysis for young workers [PDF]
We analyze the Spanish temporary workers’ transitions into permanent employment and to what extent those who become unemployed are able to achieve a permanent job.
García-Pérez, J. Ignacio +1 more
core +5 more sources
A systematic framework for analyzing the dynamic effects of permanent and transitory shocks [PDF]
This paper proposes a systematic framework for analyzing the dynamic effects of permanent and transitory shocks on a system of n economic variables. We consider a two-step orthogonolization on the residuals of a VECM with r cointegrating vectors.
Gonzalo, Jesús, Ng, Serena
core +3 more sources
Bipartite Graphs Associated with Pell, Mersenne and Perrin Numbers
In this paper, we consider the relationships between the numbers of perfect matchings (1-factors) of bipartite graphs and Pell, Mersenne and Perrin Numbers.
Öteleş Ahmet
doaj +1 more source
Role of reinforcement methods in retention of composite restorations of primary anterior teeth
Objectives This study aimed to evaluate the retention of composite restorations of primary anterior teeth reinforced with composite posts, glass fiber posts, para-pulpal pins with composite posts, and para-pulpal pins alone.
Ghassem Ansari +3 more
doaj +1 more source
The occurrence of a short-circuit fault in a transformer results in a rapid increase in the short-circuit current, and the temperature of the transformer winding rises rapidly.
Junyang Wang +5 more
doaj +1 more source
Introduction: The first permanent molars are the most affected due to age of eruption and their anatomical characteristics. Objective: to determine the prevalence of caries and premature loss of the first permanent molar in a group of grade school ...
Mariana Morales-Chávez +1 more
doaj +1 more source
Leakage flux magnitude and pattern greatly affect transformer short-circuit resistance. In this paper, finite element calculations and experimental measurements is used to calculate the leakage magnetic field of a transformer.
Tiannan Meng +5 more
doaj +1 more source
Objective: In vitro leakage studies suggest that temporary restorations only provide a short-term seal. However, it remains unclear whether the clinical outcome is impacted by the time elapsing between the completion of a root canal treatment (RCT) and ...
Sara Olsson +4 more
doaj +1 more source

