Results 131 to 140 of about 5,520 (288)

Grammar Searches for Wh‐Questions in Beginning‐Level Child Second Language Learners

International Journal of Applied Linguistics, EarlyView.
ABSTRACT It is important for learners to be able to ask wh‐questions in interaction. However, making wh‐questions can be difficult for beginning‐level EFL leaners, particularly for those learners whose L1 and L2 differ in the way wh‐questions are formed.
Haerim Hwang
wiley   +1 more source

COMPARISON BETWEEN COMPETING RISKS VIA THE COPULA-GRAPHIC ESTIMATOR COMPARACIÓN ENTRE RIESGOS COMPETITIVOS VÍA EL ESTIMADOR CÓPULA-GRÁFICO

Revista Colombiana de Estadística, 2011
The identifiability problem in competing risks associated to the dependence measure between the failure modes, can be solved by means of the copula-graphic estimator which assumes the copula function known. This paper compares, through a simulation study,
Yáñez Sergio, Brango Hugo, Jaramillo Mario C., Lopera Carlos M.   +3 more
doaj  

Seismic Reliability Analysis of Reinforced Concrete Arch Bridges Considering Component Correlation

Buildings
To more effectively account for the correlation between components in the seismic reliability analysis of reinforced concrete arch bridges, this study proposes a system seismic reliability analysis method based on the D-vine Copula function. First, based
Jianjun Liu, Jijin Zhang, Hanzhao Zhang, Hongping Ye, Xuemin Wang   +4 more
doaj   +1 more source

Goodness‐of‐Fit Tests for Positive Quadrant Dependence

International Statistical Review, EarlyView.
Summary When two random variables are positive quadrant dependent (PQD), they are more likely to assume small (or large) values simultaneously compared with when the random variables are independent. This dependence structure is of interest in many areas, including finance, actuarial science and engineering.
Chuan‐Fa Tang, Joshua M. Tebbs
wiley   +1 more source

Bernstein Approximations to the Copula Function and Portfolio Optimization

The copula function is considered within the context of financial multivariate data sets that are not normally distributed. The Bernstein polynomial approximation to copulae is given and motivated by its desirable properties. The multivariate convergence
Satchell, S.E., A. Sancetta
core  

Optimal Two Dimensional Preventive Maintenance Policy Based on Asymmetric Copula Function

, 2015
For some kinds of products, the consumers have strict requirements to the reliability of these products in the based warranty period. Then the manufacturer is inclined to provide the two-dimensional preventive maintenance policy to take the usage degree ...
Li, Zhen; Mechanical Engineering College, Shijiazhuang, Jia, Yunxian; Mechanical Engineering College, Shijiazhuang, Li, Xinyue; Mechanical Engineering College, Shijiazhuang   +2 more
core   +2 more sources

Situated Attention and Strategic Leadership Interfaces: The Role of CEO Humility and Digital Transformation Urgency for Corporate Venture Capital Investments

Journal of Management Studies, EarlyView.
Abstract Integrating the attention‐based view with the strategic leadership interfaces perspective, we propose a theoretical model of situational urgency mechanisms influencing the allocation of CEOs' attention towards responsive actions. Specifically, we theorize upon the role of humility, which leads CEOs towards embracing interfaces and makes them ...
Petrit Ademi, Philipp Schade, Monika C. Schuhmacher   +2 more
wiley   +1 more source

Copulas for Stochastic Volatility Models

Mathematics
In this article, a Fokker–Planck equation framework for the copula density associated with a two-dimensional stochastic differential equations system is developed.
Mauricio Contreras González, Roberto Ortiz Herrera, Marcelo Villena   +2 more
doaj   +1 more source

Combining Random Forest and Copula Function: a heuristic approach for selecting assets in a financial crisis perspective

, 2010
In this paper we propose a heuristic strategy aimed at selecting and analysing a set of fi nancial assets, focusing attention on their multivariate tail dependence structure.
Paola Zuccolotto, Giovanni De Luca, RIVIECCIO, GIORGIA, RIVIECCIO G., ZUCCOLOTTO P., Giorgia Rivieccio, DE LUCA G., ZUCCOLOTTO, Paola, DE LUCA, GIOVANNI   +8 more
core   +1 more source

Ripples in the Pond: Product Portfolio Reconfiguration and Dynamism in the Competitive Environment

Journal of Management Studies, EarlyView.
Abstract The management literature often overlooks how firms can alter the competitive landscape without introducing groundbreaking changes or innovations. Applying the awareness, motivation, and capability framework from competitive dynamics, we posit that as a firm intensifies its product portfolio reconfiguration, its rivals become increasingly ...
Christopher Jung, Mark R. Mallon, Stav Fainshmidt   +2 more
wiley   +1 more source