access 160+ million publications and connect with 25+ million researchers. join for free and gain visibility by uploading your research.

mdpi is a publisher of peer-reviewed, open access journals since its establishment in 1996.

sci-hub website. get free access to academic journals. download research papers for free from sciencedirect, ieee, wiley, springer, nature and others

「國家科學及技術委員會全球資訊網」(nstc)

semantic scholar uses groundbreaking ai and engineering to understand the semantics of scientific literature to help scholars discover relevant research.

永析統計及論文諮詢顧問為 統計分析 專業領域之 統計諮詢 公司，熟悉並提供 文獻蒐集 、 問卷設計 、 研究方法 、 統計模型 、 數據分析 、 資料處理 、 產業資料 、 論文諮詢 及 期刊 等服務，運用 演算法分析 ，協助您分析及解讀數據上的insight，找到數據內隱藏的真相，是業界值得信賴的專家。

the world’s largest collection of open access research papers

scientific research publishing is an academic publisher with more than 200 open access journal in the areas of science, technology and medicine. it also publishes academic books and conference proceedings.

材料世界網報導台灣及全球材料與科技相關研發成果及新聞含材料,電池,光電,顯示,照明,半導體,構裝,能源,奈米,熱電,散熱,科技,化工,薄膜,生質

browse our vast collection of ebooks in specialist subjects led by a global network of editors.