• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 4224
  • 2483
  • 955
  • 550
  • 488
  • 304
  • 121
  • 104
  • 103
  • 83
  • 75
  • 75
  • 70
  • 70
  • 67
  • Tagged with
  • 11487
  • 2035
  • 1179
  • 945
  • 837
  • 819
  • 751
  • 707
  • 686
  • 610
  • 598
  • 541
  • 536
  • 534
  • 525
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

DETERMINATION OF AEROSOL SIZE DISTRIBUTION FROM BACKSCATTERED RADIATION BY MEANS OF "PSEUDO" EMPIRICAL ORTHOGONAL FUNCTIONS (SCATTERING).

BEN-DAVID, AVISHAY. January 1986 (has links)
The amount of information (types of solutions, accuracy and moments of the solution) about tropospheric rural aerosol size distribution that can in theory be obtained from backscattered measurements, without using any additional information about the anticipated solution, has been discussed. In practice, additional assumptions (constraints) must be used to solve for aerosol size distribution. The inferred solution reflects those assumptions and is therefore not objective. The quality of the solution depends on the applicability of the constraints to the given problem. A library of pseudo-empirical functions is used to form a set of orthogonal basis functions. It is assumed that any unknown aerosol size distribution may be constructed from a linear sum of these basis functions. The problem then becomes one of solving for the unknown coefficients of the basis functions. A solution with a smoothing constraint and a positivity constraint has been developed. Results of the method, when backscattered radiation is used as measurements, are presented. Discussion on the limitations of the method and the effects upon the solution of the different assumptions that are used is given. Some possible uses of the solution are considered.
72

Patterns in the dynamics and distribution of insect populations

Gaston, K. J. January 1989 (has links)
No description available.
73

Some contributions to the analysis of skew data on the line and circle

Pewsey, Arthur Richard January 2002 (has links)
No description available.
74

Chemometric strategies for determining the geochemical association & solid-phase partitioning of selenium : application to soils of the East Midlands

Seed, Kevin J. January 2001 (has links)
No description available.
75

Bayesian regression and discrimination with many variables

Chang, Kai-Ming January 2002 (has links)
No description available.
76

Provincial economic growth, inter provincial and coastal inland income inequality in China from 1991 to 1999

Wang, Zheng January 2003 (has links)
No description available.
77

On exceptional sets in the metrical theory of uniform distribution

Nair, R. January 1986 (has links)
No description available.
78

A fracture mechanics approach to fatigue crack propagation under variable amplitude loading

Razmjoo, Gholam Reza January 1990 (has links)
No description available.
79

The raindrop size distribution and applications to scattering and extinction

Montanari, C. P. January 1997 (has links)
No description available.
80

Dynamic and transient system control using fast acting quadrature boosters

Fang, Yong Jie January 1996 (has links)
No description available.

Page generated in 0.1106 seconds