Final Manuscript submitted to the Fire Safety Journal Chen et. al., Fire detection using smoke and gas sensors Final Manuscript Fire detection using smoke and gas sensors Shin-Juh Chen 1 , Chris Hovde 1 , Kristen A. Peterson 1 , and André Marshall 2 1 Southwest Sciences Inc., 1570 Pacheco Street, Suite E-11 Santa Fe, NM 87505, USA 2 Department of Fire Protection Engineering University of Maryland, College Park, MD 20742-3031, USA Submitted to Fire Safety Journal Paper No. 1298 Manuscript No. U161 January 17, 2007 (2:07pm) Corresponding Author: Shin-Juh Chen, Ph.D. Southwest Sciences, Inc. 1570 Pacheco Street, Suite E-11 Santa Fe, NM 87505 TEL: (505) 984-1322 FAX: (505) 988-9230 EMAIL: sjchen@swsciences.com