Results 261 to 270 of about 7,525,331 (294)
Some of the next articles are maybe not open access.
Cross-sectional echocardiography
British Medical Bulletin, 1989Cross-sectional echocardiography has become an essential part of the investigation of infants and children with heart disease. Frequently, it provides a precise diagnosis. In many instances, particularly in neonates and infants, surgery can be undertaken without the need to proceed to cardiac catheterisation.
M L, Rigby, A N, Redington
openaire +2 more sources
Multicollinearity in cross-sectional regressions
Journal of Geographical Systems, 2006The paper examines robustness of results from cross-sectional regression paying attention to the impact of multicollinearity. It is well known that the reliability of estimators (least-squares or maximum-likelihood) gets worse as the linear relationships between the regressors become more acute.
Jørgen Lauridsen, Jesús Mur
openaire +3 more sources
American Journal of Orthodontics and Dentofacial Orthopedics, 2014
Across-sectional study is an observational study in which the exposure and the outcome are determined at the same time point for each study participant. Cross-sectional studies comprise the simplest individual-level observational study design and are usually relatively inexpensive and easy to conduct compared with case-control or cohort studies.
openaire +2 more sources
Across-sectional study is an observational study in which the exposure and the outcome are determined at the same time point for each study participant. Cross-sectional studies comprise the simplest individual-level observational study design and are usually relatively inexpensive and easy to conduct compared with case-control or cohort studies.
openaire +2 more sources
MONOIDS WITH IDEMPOTENT CROSS-SECTIONS
International Journal of Algebra and Computation, 2001In this paper we consider monoids M with an idempotent cross-section Λ of regular [Formula: see text]-classes such that for all idempotents e, f of M with e≥f, there exists x in the unit group such that x-1ex, x-1fx∈Λ. Such monoids arise frequently in connection with group representations.
openaire +2 more sources
Cross-Sectional Research: A Critical Perspective, Use Cases, and Recommendations for IS Research
International Journal of Information Management, 2023Christian Maier +2 more
exaly
Cross-Coupling of Heteroatomic Electrophiles
Chemical Reviews, 2019Katerina M Korch, Donald A Watson
exaly
Nickel-Catalyzed Cross-Couplings Involving Carbon−Oxygen Bonds
Chemical Reviews, 2011Virgil Percec +2 more
exaly