In this paper, it is offered to use the method of modulated reflection for the measurementof complex transfer factor of a radome wall on various sites of its surface. The circuit of equipmentallowed to carry out of su...In this paper, it is offered to use the method of modulated reflection for the measurementof complex transfer factor of a radome wall on various sites of its surface. The circuit of equipmentallowed to carry out of such measurement is given. The advantage of the given method in comparisonwith measurements on a gleam is shown. The results of the experimental research are given and theestimation of the accuracy of proposed method is considered.展开更多
【目的】分析竹产业阶段性转移的时空特征及其影响因素,为推动竹产业高质量发展和区域政策调整提供经验借鉴。【方法】基于1998—2020年中国13个省份竹资源和竹产业相关统计数据,采用地理信息系统(Geographic Information System,GIS)...【目的】分析竹产业阶段性转移的时空特征及其影响因素,为推动竹产业高质量发展和区域政策调整提供经验借鉴。【方法】基于1998—2020年中国13个省份竹资源和竹产业相关统计数据,采用地理信息系统(Geographic Information System,GIS)分析竹产业转移时空特征,采用双向固定效应和空间杜宾模型实证检验竹产业转移的驱动因素和空间溢出效应。【结果】(1)中国竹林资源呈现向西转移的趋势,而竹产业产值则呈现北进西移的趋势,湖南成为继江西后的资源重心和产业重心。(2)竹资源和竹产业转移的全局Moran′s I指数显著为正,且多数年份在1%水平下显著。(3)产业结构升级、研发投入是促进竹产业转移的重要因素,而林草固定资产投资、城乡收入差距则会阻碍竹产业转移。(4)产业结构升级、研发投入、林草固定资产投资和城乡收入差距对竹产业转移的影响存在显著的时间异质性。【结论】中国省域的竹产业转移具有空间正相关性。产业结构升级、研发投入、林草固定资产投资和城乡收入差距是显著影响竹产业转移的共性因素,其影响存在显著的时间异质性。展开更多
In recent years, researches on rural human capital are of great concern, but for how to effectively use the rural human capital is scanty, and thus, the transfer of rural human capital becomes a kind of way to solve r...In recent years, researches on rural human capital are of great concern, but for how to effectively use the rural human capital is scanty, and thus, the transfer of rural human capital becomes a kind of way to solve rural human capital utilization. A portion of China rural human capital has been successful transferred, however, because of the restrain of their conditions, they can only be engaged in some low level work. In China rural areas, there are a lot of rural human capitals who are not successful transferred. How to successfully transfer the rest of this part rural human capital and how to make them play roles will be an important task. In this paper, according to the practical situations, we first defined the rural human capital, and then briefly summarized the importance of human capital transfer. At last, we found out the restriction factors of rural human capital transfer in China, and put forward some suggestions and measures to solve the problems.展开更多
文摘In this paper, it is offered to use the method of modulated reflection for the measurementof complex transfer factor of a radome wall on various sites of its surface. The circuit of equipmentallowed to carry out of such measurement is given. The advantage of the given method in comparisonwith measurements on a gleam is shown. The results of the experimental research are given and theestimation of the accuracy of proposed method is considered.
文摘【目的】分析竹产业阶段性转移的时空特征及其影响因素,为推动竹产业高质量发展和区域政策调整提供经验借鉴。【方法】基于1998—2020年中国13个省份竹资源和竹产业相关统计数据,采用地理信息系统(Geographic Information System,GIS)分析竹产业转移时空特征,采用双向固定效应和空间杜宾模型实证检验竹产业转移的驱动因素和空间溢出效应。【结果】(1)中国竹林资源呈现向西转移的趋势,而竹产业产值则呈现北进西移的趋势,湖南成为继江西后的资源重心和产业重心。(2)竹资源和竹产业转移的全局Moran′s I指数显著为正,且多数年份在1%水平下显著。(3)产业结构升级、研发投入是促进竹产业转移的重要因素,而林草固定资产投资、城乡收入差距则会阻碍竹产业转移。(4)产业结构升级、研发投入、林草固定资产投资和城乡收入差距对竹产业转移的影响存在显著的时间异质性。【结论】中国省域的竹产业转移具有空间正相关性。产业结构升级、研发投入、林草固定资产投资和城乡收入差距是显著影响竹产业转移的共性因素,其影响存在显著的时间异质性。
基金Supported by Model of New Generation Migrant Laborers' Quality Construction in Heilongjiang Province Based on Sociology Net(GZ11D202)Post-crisis Migrant Workers Returning Home for Entrepreneurial(10C011)+1 种基金Urbanization of Heilongjiang Province and Ecological Interactive Mode(12B033)Evaluation for Urban and Rural Employment and Manpower in Heilongjiang Province(11552020)
文摘In recent years, researches on rural human capital are of great concern, but for how to effectively use the rural human capital is scanty, and thus, the transfer of rural human capital becomes a kind of way to solve rural human capital utilization. A portion of China rural human capital has been successful transferred, however, because of the restrain of their conditions, they can only be engaged in some low level work. In China rural areas, there are a lot of rural human capitals who are not successful transferred. How to successfully transfer the rest of this part rural human capital and how to make them play roles will be an important task. In this paper, according to the practical situations, we first defined the rural human capital, and then briefly summarized the importance of human capital transfer. At last, we found out the restriction factors of rural human capital transfer in China, and put forward some suggestions and measures to solve the problems.
