Regional development is a complex process that can be analysed in various contexts, including environmental, social and economic factors. Variations in the levels of development are naturally observed across countries and regions, but they play a special role in trans-border regions. The aim of this study is to investigate differences in the level of development of two Polish voivodships (Warmia and Mazury, and Podlasie) and two Lithuanian counties (Marijampol? and Alytus) which are trans-border regions (NUTS 4 level). The study was conducted by analysing three subordinate criteria, namely environmental, social and economic factors, as well as the overall development of the evaluated regions with the use of the analytical hierarchy process and technique for order preference by similarity to ideal solution methods. The evaluated trans-border regions are characterised by a predominance of rural areas and considerable variations in development. The entire area is characterised by high natural value. This is an important observation because the condition of the natural environment is a key determinant of well-being, and it directly influences the quality of life. The analysis revealed considerable demographic problems, mainly in Lithuanian regions, resulting from low population growth and a negative net migration rate which influence population structure. Disproportions in regional development call for regional policies that are adapted to local needs and resources.
This note is concerned with the limiting properties of the least squares estimation for the random coefficient autoregressive model. In contrast with existing results, ours is applicable to a wide range of models under more general assumptions. 相似文献
The study aimed to assess if long-term exposure to urbanization changes the structure and composition of soil collembolan communities in urban green components (street lawns and park lawns) and in all urban green. Species diversity metrics, rarefaction, species richness estimators (Chao 1 and ACE) and multivariate analysis were used for the comparison of changes in community structure and diversity pattern over ca 30 years’ time span. Our results clearly demonstrate a shift, through time, in Collembola community composition and structure in an urban ecosystem and confirm that there is a linkage between long-term exposure to urbanization and changes in collembolan communities. Long-term urbanization led to erosion in species diversity and the formation of species-poor communities, species replacement, loss of specialized forms and promoted the invasion of exotic species. However, we show that the time span considered produced significant differences in diversity attribute values for the collembolan communities from street lawns and insignificant differences in park lawns, also we noted lack of significant differences in collembolan abundance across the two urban green components. The observed temporal changes in collembolan communities indicate that their response to disturbances in urban settings and selecting species is shaped by multiple processes. We conclude that more resistant collembolan communities were found over time in less stressed urban greening components such as park lawn soils compared to street lawn soils. 相似文献
ABSTRACTChild sexual abuse (CSA) is a robust predictor of trauma symptoms. Past research has identified many correlates of trauma symptoms following disclosure of CSA. Theory suggests that loss of social contact may be another important contributor to adolescents’ trauma symptoms following CSA. A clinical sample of 166 adolescents (95% female) between 11 and 19 years (M = 13.80, SD = 1.87) reported on perceived loss of social contact, the extent to which the CSA was coercive, appraisals of self-blame for the abuse, supportiveness of a primary non-abusing caregiver, and trauma symptoms. The adolescent’s relationship to the abuser, abuse severity and duration were coded from forensic interviews. Results indicated that greater perceived loss of social contact was associated with higher levels of trauma symptoms, even after controlling for other correlates of trauma symptoms and demographic variables. These findings suggest that perceived loss of social contact may be an important variable to consider in assessing and intervening with adolescents who have been sexually abused. 相似文献