Emotional Stress Relief Vest – Research on Heat Dissipation
Due to having Asperger's syndrome, I want to make a pressure vest suitable for hot and humid climates like Asia to help reduce the daily anxiety of children and adults with autism, ADHD, sensory disorders, etc. To solve this problem, I first tried using a porous material. But after seeing a pressure vest in person, I found it to be useless. Therefore, I came up with the idea of creating an active airflow cooling system between the body and the pressure vest. To experiment, I wanted to make pressure vests. However, I found that a high-frequency TPU welding machine is required. Thus, I made models of pressure vests using airbags, water-resistant nylon, and quick-drying fabric. I also made models, which came from sandwich fabric. Through this research, I discovered that the sandwich fabric design has the best passive heat dissipation, and the combination of the sandwich fabric and the active airflow cooling system has the best active heat dissipation.
從心開始—三角形的四心到各邊距離和
此研究討論三角形 ABC 的外心、重心、垂心、內心到三邊之距離,並依銳角、直角及鈍角三角形,去比較各距離總和之大小關係及相互之間的關聯性。其主要結果為: 1. 用外接圓半徑 R 及∠A,∠B,∠C 表示各心到三邊之距離。 2. 設外心、重心、垂心、內心到三邊之距離總和依序為d1,d2,d3,d4,其大小關係為: (1)在銳角∆中,d1≥d2≥d4≥d3,僅當正∆時,等號成立。 (2)在直角∆中,d1>d2>d4>d3。 (3)在鈍角∆中,d1>d2>d4恆成立。d3與d1、d2、d4比較,並無絕對關係,但在等腰鈍角∆,我們給出其大小順序的臨界值。 3. 在銳角∆及直角∆中,等式d2=2/3 d1+1/3 d3 和d2+1/3 d1-1/3 d3-1/3 d4=R 恆成立。