Jalousie window sustainable living. A commonly accepted advantage of jalousie windows is their ability to be left part way open in heavy rains as a way to maintain desirable ventilation, whether a sunshower or prolonged tropical storm. An experiment in 1960 tested the efficacy of jalousie windows in tropical climates to exclude rain while still allowing for air flow. A major issue with excluding rain while allowing air flow is that both tend to come from the same direction. The angled slatted jalousie windows give the impression of solving this issue, however, the actual efficacy of the windows to let in air
Types of nationalism Types of nationalism Many scholars argue that there is more than one type of nationalism. Nationalism may manifest itself as part of official state ideology or as a popular (non-state) movement and may be expressed along civic, ethnic, cultural, religious or ideological lines. These self-definitions of the nation are used to classify types of nationalism. However, such categories are not mutually exclusive and many nationalist movements combine some or all of these elements to varying degrees. Nationalist movements can also be classified by other criteria, such as scale and location. Some political theorists make the case that any distinction between