We study the basic age-structured population model describing the HIV infection process, which is defined by PDEs. The model allows the production rate of viral particles and the death rate of productively infected cells to vary and depend on the infection age. By using the direct Lyapunov method and constructing suitable Lyapunov functions, dynamical properties of the agestructured model witho...

In this paper, we present a dynamic simulation model which projects the future population of the city of Leeds as a basis for policy analysis and scenario planning. We argue that microsimulation modelling is not entirely effective in the representation of student populations. Alternative approaches using both spatial interaction models and student agents are presented and evaluated. The results...

dbSNP of NCBI, providing the information for SNP genotype and frequency of many populations. However, many previous association studies provide only the SNP nucleotide position or primer sequences, without giving an SNP ID of NCBI. In this study, we built the dbSNP, SNP fasta and SNP flanking marker databases for the rat, mouse and human organisms from the NCBI databases. Boyer-Moore algorithm,...

Assessment and monitoring of rice agriculture over large areas has been limited by cloud cover, optical sensor spatial and temporal resolutions, and lack of systematic or open access radar. Dense time series of open access Sentinel-1 C-band data at moderate spatial resolution offers new opportunities for monitoring agriculture. This is especially pertinent in South and Southeast Asia where rice...

Using cosmological N-body simulations, we investigate the influence of the matter density parameter Ωm and the linear theory power spectrum P (k) on statistical properties of the dark matter halo population — the mass function n(M), two-point correlation function ξ(r), and pairwise velocity statistics v12(r) and σ12(r). For fixed linear theory P (k), the effect of changing Ωm is simple: the hal...

operational variables of a mineral processing circuit are subjected to different variations. steady-statesimulation of processes provides an estimate of their ideal stable performance whereas their dynamicsimulation predicts the effects of the variations on the processes or their subsequent processes. in thispaper, a dynamic simulator containing some of the major equipment of mineral processing...

nowadays, it is common to find optimal point of the dynamic problem; dynamic problems whose optimal point changes over time require algorithms which dynamically adapt the search space instability. in the most of them, the exploitation of some information from the past allows to quickly adapt after an environmental change (some optimal points change). this is the idea underlining the use of memo...