In the Scandinavian countries： Sweden, Norway and Denmark, the project GNU （Gr^enseoverskridende Nordisk Undervisning, i.e. Transnational Nordic Teaching） is experimenting with ways of conducting teaching across th...In the Scandinavian countries： Sweden, Norway and Denmark, the project GNU （Gr^enseoverskridende Nordisk Undervisning, i.e. Transnational Nordic Teaching） is experimenting with ways of conducting teaching across the borders in the elementary schools. The cloud classes are organised with one class from each country in the subjects： language, science, math, social science/history. The teachers from the three classes work together to design teaching they conduct together with assignments the students will be able to solve only in collaboration with their fellow students in the three classes. The three year project ends in 2014 but already now there are some interesting findings on how transnational teaching collaboration works for teachers and students. This paper will focus on the different uses of web based tools of synchronous and asynchronous communication and discuss challenges and benefits in regard to learning and pedagogy with virtual classroom.展开更多
In cutting areas, soil preparation is occasionally necessary before reforestation. The aim of this action is a spatial planning that enables to perform further operations without problems. The removal, collection and ...In cutting areas, soil preparation is occasionally necessary before reforestation. The aim of this action is a spatial planning that enables to perform further operations without problems. The removal, collection and transportation of stumps from the soil are part of this action. Issues related to climate change and the shortcoming of fossil energy sources call attention to increase the rate of renewable energy sources. Using the stumps removed from the soil as fuel is a significant resource within the biomass potential. For lifting a stump together with its roots, a grab mounted on a shovel is generally used. The utilisation of the lifted stumps for energy purposes increased worldwide, especially in the Scandinavian countries. In order to rationalise this operation, analyses of stump lifting time have been carried out. Results of some Hungarian experiments are presented below. The authors tested a machine mounting one grab for stump lifting on three tree types （Scots pine, robinia and poplar） and found functions correlating stump extraction force and stump diameter, which can be used in order to choose the right machine and determine the cost of the operation.展开更多
家具的“有机设计”(Organic Design)概念,最早始于1941年在纽约现代艺术博物馆中举办的一次题为“家庭陈设中的有机设计”(Organic Design in Home Funishings)展览,在由当时美国工业设计部主任埃略特·诺伊斯(Eliot Noyes)主持的...家具的“有机设计”(Organic Design)概念,最早始于1941年在纽约现代艺术博物馆中举办的一次题为“家庭陈设中的有机设计”(Organic Design in Home Funishings)展览,在由当时美国工业设计部主任埃略特·诺伊斯(Eliot Noyes)主持的这次展览上,来自克兰布鲁艺术学院的查尔斯·埃姆斯(Charles Eames)和埃罗·沙里宁(Eeso Saovinen)合作设计的椅子系列获得了头奖。这是一组用胶合板模压成型的椅子,椅子的造型根据不同场合人体坐姿的不同,做成双向曲面的形状,一改过去已有的单向弯曲,创造了三维曲面。如图示1。展览的主办者是这样评价的:“一个设计,当它整体中的各部分能根据结构、材料和使用目的很和谐地组织在一起时,就可以称作是有机的。在这一定义中,可以不存在徒劳无用的装饰或多余之物。展开更多
文摘In the Scandinavian countries： Sweden, Norway and Denmark, the project GNU （Gr^enseoverskridende Nordisk Undervisning, i.e. Transnational Nordic Teaching） is experimenting with ways of conducting teaching across the borders in the elementary schools. The cloud classes are organised with one class from each country in the subjects： language, science, math, social science/history. The teachers from the three classes work together to design teaching they conduct together with assignments the students will be able to solve only in collaboration with their fellow students in the three classes. The three year project ends in 2014 but already now there are some interesting findings on how transnational teaching collaboration works for teachers and students. This paper will focus on the different uses of web based tools of synchronous and asynchronous communication and discuss challenges and benefits in regard to learning and pedagogy with virtual classroom.
文摘In cutting areas, soil preparation is occasionally necessary before reforestation. The aim of this action is a spatial planning that enables to perform further operations without problems. The removal, collection and transportation of stumps from the soil are part of this action. Issues related to climate change and the shortcoming of fossil energy sources call attention to increase the rate of renewable energy sources. Using the stumps removed from the soil as fuel is a significant resource within the biomass potential. For lifting a stump together with its roots, a grab mounted on a shovel is generally used. The utilisation of the lifted stumps for energy purposes increased worldwide, especially in the Scandinavian countries. In order to rationalise this operation, analyses of stump lifting time have been carried out. Results of some Hungarian experiments are presented below. The authors tested a machine mounting one grab for stump lifting on three tree types （Scots pine, robinia and poplar） and found functions correlating stump extraction force and stump diameter, which can be used in order to choose the right machine and determine the cost of the operation.
文摘家具的“有机设计”(Organic Design)概念,最早始于1941年在纽约现代艺术博物馆中举办的一次题为“家庭陈设中的有机设计”(Organic Design in Home Funishings)展览,在由当时美国工业设计部主任埃略特·诺伊斯(Eliot Noyes)主持的这次展览上,来自克兰布鲁艺术学院的查尔斯·埃姆斯(Charles Eames)和埃罗·沙里宁(Eeso Saovinen)合作设计的椅子系列获得了头奖。这是一组用胶合板模压成型的椅子,椅子的造型根据不同场合人体坐姿的不同,做成双向曲面的形状,一改过去已有的单向弯曲,创造了三维曲面。如图示1。展览的主办者是这样评价的:“一个设计,当它整体中的各部分能根据结构、材料和使用目的很和谐地组织在一起时,就可以称作是有机的。在这一定义中,可以不存在徒劳无用的装饰或多余之物。
