This research note explores the impact of international migration on global population distribution since 1990s. The is a function both intensity as well effectiveness migration, that imbalance between flows and counter-flows. presence reciprocal well-recognized feature systems; however, this dimension has been difficult to capture at level due lack origin-destination flow data. In note, we app...

The overall growth of the population and continuing migration to urban increases demand meet sustainability in city. Further, urbanization development buildings reduces vegetation. This study focuses on detection extraction vegetation using image processing from high resolution satellite images. Here, this paper four steps are used detect tree crown, Detection Vegetation area masking Non-vegeta...

Angle-gather migration creates seismic images for different reflection angles at the reflector. We formulate an angle-gather time migration algorithm and study its properties. The algorithm serves as an educational introduction to the angle gather concept. It also looks attractive as a practical alternative to conventional common-offset time migration both for velocity analysis and for AVO/AVA ...

Angle-gather migration creates seismic images for different reflection angles at the reflector. We formulate an angle-gather time migration algorithm and study its properties. The algorithm serves as an educational introduction to the angle gather concept. It also looks attractive as a practical alternative to conventional common-offset time migration both for velocity analysis and for AVO/AVA ...

In distributed evolutionary algorithms, migration interval is used to decide migration moments. Nevertheless, migration moments predetermined by intervals cannot match the dynamic situation of evolution. In this paper, a scheme of setting the success rate of migration based on subpopulation diversity at each interval is proposed. With the scheme, migration still occurs at intervals, but the pro...

While migration is a basic element of population dynamics in most societies, in Iran, rural-urban migration is a particular concern of both social scientists and policy makers. Rural-urban migration accounts for over half of the growth of most Iranian cities. On the other hand, this movement is often cited as having negative effects on rural area, including a shortage of supply of agricultural ...

Since the reform and opening-up, population migration has become increasingly active, which not only meets demand of labor shortage in inflow areas, but also drives employment outflow areas. Population focus market research. Therefore, it is great significance to accurately judge grasp changes characteristics migration. Based on relevant economic theories models migration, this paper analyzes C...

Cities experience significant, near random walk productivity shocks, yet population is slow to adjust. In practise local population changes are dominated by variation in net migration, and we argue that understanding gross migration is essential to quantify how net migration may slow population adjustments. Housing is also a natural candidate for slowing population adjustments because it is dif...

Biogeography-based optimization algorithm(BBO) is a new kind of optimization algorithm based on Biogeography. It is designed based on the migration strategy of animals to solve the problem of optimization. In this paper, a new algorithm-Biogeography Migration Algorithm for Traveling Salesman Problem(TSPBMA) is presented. Migration operator is designed. It is tested on four classical TSP problem...

Internal migration has an important role in population redistribution and development. It is instrumental in the redistribution of human resources and productivity improvements. Migration is multi-dimensional in nature, involving temporal and spatial dimensions. This paper uses the 2 per cent sample data from the 1991 and 2000 population censuses to examine the levels and patterns of inter-stat...