It is well-known that the αG(M)-invariant introduced by Tian plays an important role in the study of the existence of Kähler-Einstein metrics on complex manifolds with positive first Chern class ([T1], [T2], [TY]). Based on the estimate of αG(M)-invariant, Tian in 1990 proved that any complex surface with c1(M) > 0 always admits a Kähler-Einstein metric except in two cases CP2#1CP2 and CP2#2CP2...

The stellar luminosity function derived from the sample of stars within 5.2–20 pc is the nearby luminosity function. The luminosity function obtained from deep low spatial resolution surveys to distances of typically 100–200 pc is the photometric luminosity function. We obtain and tabulate a best estimate of the parent distribution from which Malmquist corrected photometric luminosity functions...

background: the job content questionnaire (m-jcq) is an established self-reported instrument used across the world to measure the work dimensions based on the karasek's demand-control-support model. objective: to evaluate the psychometrics properties of the malay version of m-jcq among nurses in malaysia. methods: this cross-sectional study was carried out on nurses working in 4 public hospital...

Kernel ridge regression (KRR) is a standard method for performing non-parametric regression over reproducing kernel Hilbert spaces. Given n samples, the time and space complexity of computing the KRR estimate scale as O(n) and O(n) respectively, and so is prohibitive in many cases. We propose approximations of KRR based on m-dimensional randomized sketches of the kernel matrix, and study how sm...

This study concerns the genetic diversity and taxonomic status of Marrubium species from central and south-west of Zagros region, Iran. It is investigated by Inter-Simple Sequence Repeat analysis. A total of 68 accessions from five Marrubium species were collected from their natural habitats. Molecular analysis was approved with 17 primers, of which 12 were carried out in the reaction mixture. ...

[1] ‏ahmad, s. and simonovic, s.p. (2005). an artificial neural network model for generating hydrograph from hydrometeorological parameters, j. hydrol, 315, 236-251. [2] agarwal, a., mishra, s.k., ram, s. and singh, j.k. (2006). simulation of runoff and sediment yield using artificial neural networks, biosys. eng, 94(4), 597-613. [3] amini, m., abbaspour, k.c., khademi, h., fathianpour, n., afy...

where γ runs over the set of all geodesics with endpoints on ∂M . All potential fields dv given by (dv)ij = 1 2 (∇ivj +∇jvi) with v = 0 on ∂M belong to the kernel of I. The ray transform I is called s-injective if this is the only obstruction to injectivity, i.e., if If = 0 implies that f is potential. S-injectivity can only hold under certain assumptions on (M, g). A natural conjecture is that...

Let g = 0,±1 be a fixed integer. Given two sequences of complex numbers (φm) ∞ m=1 and (ψn) ∞ n=1 and two sufficiently large integers M and N , we estimate the exponential sums ∑ p≤M gcd(ag,p)=1 ∑ 1≤n≤N φpψnep (ag ) , a ∈ Z, where the outer summation is taken over all primes p ≤ M with gcd(ag, p) = 1.

Towards an unbiased estimate of fluctuations in reef abundance and volume during the Phanerozoic W. Kiessling Museum of Natural History, Humboldt-University Berlin, Invalidenstr. 43, 10115 Berlin, Germany Received: 17 August 2005 – Accepted: 8 September 2005 – Published: 22 September 2005 Correspondence to: W. Kiessling ([email protected]) © 2005 Author(s). This work is lic...