A new family of preconditioners for conjugate gradient-like iterative methods applied to large sparse linear least squares problems, min k Ax ? b k 2 , is proposed. The family is based on incomplete Gram-Schmidt (IGS) factorizations of A. Particular attention has been given to the following members of the family: Incomplete Classical Gram-Schmidt (ICGS),… (More)
Recently fibroblast growth factor 21 (FGF21) has been identified as a potent regulator in glucose and lipid homeostasis. Here, we firstly investigated the metabolic role of FGF21 in human liver-derived HepG2 cells, and suggested that overexpression of FGF21 suppressed triglyceride accumulation by inhibiting the transcription of the gene necessary for de… (More)
Low-power design is essential for passive RFID tags to achieve expected level of sensitivity. Considering the mechanism of the passive tags powered, a low peak power is also important. This paper is focused on optimization on peak power. A tag IC is also presented. The IC, which is compatible with the EPC C1G2 RFID protocol, was designed and fabricated… (More)
This paper reports the availability of a database of protein structural domains (DDBASE), an alignment database of homologous proteins (HOMSTRAD) and a database of structurally aligned superfamilies (CAMPASS) on the World Wide Web (WWW). DDBASE contains information on the organization of structural domains and their boundaries; it includes only one… (More)
A simulation model is developed in this study for managing state highway maintenance. The purpose of this model is to develop causal links between revenue sources and expense demands of highway maintenance so as to suggest how to formulate cost allocation policies and programming strategies that are fair, economic and sustainable.