The article presents the development unemployment and interest rates against the average of important economic variables such as GDP dynamics, transaction prices in one of the local property markets in Poland in the y...The article presents the development unemployment and interest rates against the average of important economic variables such as GDP dynamics, transaction prices in one of the local property markets in Poland in the years 2000-2002. The strength, direction and time delay of the relationships between these variables and transaction prices have been considered during the only period of decline in property prices in the years 2000-2002. The specified relationships have been described using linear regression equations.展开更多
There is a danger of power generation efficiency decreasing due to voltage increase when clustered residential PV systems are grid-interconnected to a single distribution line. As a countermeasure, installation of the...There is a danger of power generation efficiency decreasing due to voltage increase when clustered residential PV systems are grid-interconnected to a single distribution line. As a countermeasure, installation of the reactive power control of an inverter at each residence has been considered. However, there are not many types of inverters that can operate reactive power control because there are insufficient effects on a low voltage distribution line with low penetration PV with reactive power control. Therefore, it is necessary to consider how to increase generation efficiency with a lower number of inverters. In this paper, four Japanese standard distribution line structures, for example of a residential area on ＂C1＂, where 2,160 residential PV systems are grid-interconnected, are selected. The optimal setting of reactive power control at each residence is computed on the distribution lines with a greedy method.展开更多
The aim of the research in the paper was to study redlining practice within the greater Johannesburg area. The aim can be summarised by the following objectives： firstly, to investigate the evidence of redlining in t...The aim of the research in the paper was to study redlining practice within the greater Johannesburg area. The aim can be summarised by the following objectives： firstly, to investigate the evidence of redlining in the Greater Johannesburg area and to test its existence; secondly, to investigate the reasons why the areas were redlined; thirdly, to understand what the South Africa government and society did to combat the redlining practice. The research methodology was based on a questionnaire and interviews. A pool of respondents from the Greater Johannesburg suburbs that had interest or were affected by the practice of redlining was sought and interviewed. Analysis of the responses was made and conclusions were drawn from the responses. Secondary data was also sought from publications on the redlining practice to support the primary interviews data. From the interview responses and the secondary data, it was established that redlining existed in Greater Johannesburg and that the areas where redlining was practised could be marked on a map.展开更多
文摘The article presents the development unemployment and interest rates against the average of important economic variables such as GDP dynamics, transaction prices in one of the local property markets in Poland in the years 2000-2002. The strength, direction and time delay of the relationships between these variables and transaction prices have been considered during the only period of decline in property prices in the years 2000-2002. The specified relationships have been described using linear regression equations.
文摘There is a danger of power generation efficiency decreasing due to voltage increase when clustered residential PV systems are grid-interconnected to a single distribution line. As a countermeasure, installation of the reactive power control of an inverter at each residence has been considered. However, there are not many types of inverters that can operate reactive power control because there are insufficient effects on a low voltage distribution line with low penetration PV with reactive power control. Therefore, it is necessary to consider how to increase generation efficiency with a lower number of inverters. In this paper, four Japanese standard distribution line structures, for example of a residential area on ＂C1＂, where 2,160 residential PV systems are grid-interconnected, are selected. The optimal setting of reactive power control at each residence is computed on the distribution lines with a greedy method.
文摘The aim of the research in the paper was to study redlining practice within the greater Johannesburg area. The aim can be summarised by the following objectives： firstly, to investigate the evidence of redlining in the Greater Johannesburg area and to test its existence; secondly, to investigate the reasons why the areas were redlined; thirdly, to understand what the South Africa government and society did to combat the redlining practice. The research methodology was based on a questionnaire and interviews. A pool of respondents from the Greater Johannesburg suburbs that had interest or were affected by the practice of redlining was sought and interviewed. Analysis of the responses was made and conclusions were drawn from the responses. Secondary data was also sought from publications on the redlining practice to support the primary interviews data. From the interview responses and the secondary data, it was established that redlining existed in Greater Johannesburg and that the areas where redlining was practised could be marked on a map.
