01474nas a2200121   4500008003900000245007800039210006900117260004900186300000800235520104000243100002401283856004501307       2005                          d00aBalancing comfort: occupants' control of window blinds in private offices0 aBalancing comfort occupants control of window blinds in private   aBerkeleybUniversity of California, Berkeley  a2813 a<p>The goal of this study was to develop predictive models of window blind control that could be used as a function in energy simulation programs and provide the basis for the development of future automated shading systems. Toward this goal, a two-part study, consisting of a window blind usage survey and a field study, was conducted in Berkeley, California, USA, during a period spanning from the vernal equinox to window solstice. A total of one hundred and thirteen office building occupants participated in the survey. Twenty-five occupants participated in the field study, in which measurements of physical environmental conditions were cross-linked to the participants’ assessment of visual and thermal comfort sensations. </p><p>Results from the survey showed that the primary window blind closing reason was to reduce glare from sunlight and bright windows. For the field study, a total of thirteen predictive window blind control logistic models were derived using the Generalized Estimating Equations (GEE) technique.</p>1 aInkarojrit, Vorapat  uhttp://escholarship.org/uc/item/3rd2f2bg