Sani R. Nassif

173 papers A* 20A 38B 3C 12Misc 6Journal 31Unranked 61
YearRankTypeTitle / Venue / Authors
2025 B conf
ETS
Zhe Zhang, Surendra Hemaram, Mahta Mayahinia, Christian Weis, Norbert Wehn, Mehdi B. Tahoori, Sani R. Nassif, Grigor Tshagharyan, Gurgen Harutyunyan, Yervant Zorian
2025 conf
ISVLSI
Zhe Zhang, Sani R. Nassif, Mehdi B. Tahoori
2025 J jnl
IEEE Trans. Circuits Syst. Artif. Intell.
Mohammad Hassani Sadi, Chirag Sudarshan, Sani R. Nassif, Norbert Wehn
2025 C conf
ISCAS
Philipp Fengler, Junpeng Chen, Sani R. Nassif, Ulf Schlichtmann
2025 conf
ISQED
Paula Carolina Lozano Duarte, Aradhana Dube, Georgios Zervakis, Mehdi B. Tahoori, Sani R. Nassif
2025 J jnl
CoRR
Paula Carolina Lozano Duarte, Aradhana Dube, Georgios Zervakis, Mehdi Baradaran Tahoori, Sani R. Nassif
2025 C conf
ISCAS
Walaa Amer, Sani R. Nassif, Fadi J. Kurdahi
2025 C conf
ISCAS
Mohamed Amine Riahi, Sani R. Nassif, Norbert Wehn
2024 Misc conf
VTS
Zhe Zhang, Mahta Mayahinia, Christian Weis, Norbert Wehn, Mehdi B. Tahoori, Sani R. Nassif, Grigor Tshagharyan, Gurgen Harutyunyan, Yervant Zorian
2024 A conf
DATE
Priyanjana Pal, Haibin Zhao, Maha Shatta, Michael Hefenbrock, Sina Bakhtavari Mamaghani, Sani R. Nassif, Michael Beigl, Mehdi B. Tahoori
2024 C conf
IOLTS
Zhe Zhang, Christian Weis, Norbert Wehn, Mehdi B. Tahoori, Sani R. Nassif
2024 conf
ISOCC
André Lucas Chinazzo, Norbert Wehn, Sani R. Nassif
2024 A conf
ITC
Zhe Zhang, Mahta Mayahinia, Christian Weis, Norbert Wehn, Mehdi B. Tahoori, Sani R. Nassif, Grigor Tshagharyan, Gurgen Harutyunyan, Yervant Zorian
2024 B conf
ASPDAC
Jan Lappas, Mohamed Amine Riahi, Christian Weis, Norbert Wehn, Sani R. Nassif
2024 conf
ISOCC
Jan Lappas, Norbert Wehn, Sani R. Nassif
2024 conf
ISQED
Philipp Fengler, Sani R. Nassif, Ulf Schlichtmann
2023 C conf
VLSI-SoC
Grégoire Eggermann, Marco Rios, Giovanni Ansaloni, Sani R. Nassif, David Atienza
2019 A conf
DATE
Alexandra Listl, Daniel Mueller-Gritschneder, Ulf Schlichtmann, Sani R. Nassif
2015 J jnl
IEEE Trans. Very Large Scale Integr. Syst.
Di-An Li, Malgorzata Marek-Sadowska, Sani R. Nassif
2015 conf
ISQED
Mohammad Saber Golanbari, Saman Kiamehr, Mehdi Baradaran Tahoori, Sani R. Nassif
2015 J jnl
IET Comput. Digit. Tech.
Sani R. Nassif, Martin A. Trefzer
2015 J jnl
IEEE Trans. Very Large Scale Integr. Syst.
Di-An Li, Malgorzata Marek-Sadowska, Sani R. Nassif
2014 conf
ASP-DAC
Sani R. Nassif, Gi-Joon Nam, Jerry Hayes, Sani Fakhouri
2014 A conf
DATE
Ulf Schlichtmann, Veit Kleeberger, Jacob A. Abraham, Adrian Evans, Christina Gimmler-Dumont, Michael Glaß, Andreas Herkersdorf, Sani R. Nassif, Norbert Wehn
2014 conf
ISPD
Gi-Joon Nam, Sani R. Nassif
2014 A* conf
DAC
Saman Kiamehr, Thomas H. Osiecki, Mehdi Baradaran Tahoori, Sani R. Nassif
2014 J jnl
Microelectron. Reliab.
Andreas Herkersdorf, Hananeh Aliee, Michael Engel, Michael Glaß, Christina Gimmler-Dumont, Jörg Henkel, Veit Kleeberger, Michael A. Kochte, Johannes Maximilian Kühn, Daniel Mueller-Gritschneder, Sani R. Nassif, Holm Rauchfuss, Wolfgang Rosenstiel, Ulf Schlichtmann, Muhammad Shafique, Mehdi Baradaran Tahoori, Jürgen Teich, Norbert Wehn, Christian Weis, Hans-Joachim Wunderlich
2014 A conf
ICCAD
Iris Hui-Ru Jiang, Gi-Joon Nam, Hua-Yu Chang, Sani R. Nassif, Jerry Hayes
2014 conf
ISQED
Zhong Guan, Malgorzata Marek-Sadowska, Sani R. Nassif
2013 J jnl
IEEE Micro
Veit Kleeberger, Christina Gimmler-Dumont, Christian Weis, Andreas Herkersdorf, Daniel Mueller-Gritschneder, Sani R. Nassif, Ulf Schlichtmann, Norbert Wehn
2013 B conf
ETS
Yuma Higuchi, Kenichi Shinkai, Masanori Hashimoto, Rahul M. Rao, Sani R. Nassif
2013 Misc conf
ICCS
Thomas H. Osiecki, Min-Yu Tsai, Anne E. Gattiker, Damir A. Jamsek, Sani R. Nassif, William Evan Speight, Cliff C. N. Sze
2013 A conf
ICCAD
Shayak Banerjee, Zhuo Li, Sani R. Nassif
2013 conf
ESSDERC
Xingsheng Wang, Binjie Cheng, Andrew R. Brown, Campbell Millar, Jente B. Kuang, Sani R. Nassif, Asen Asenov
2013 A conf
DATE
Farshad Firouzi, Saman Kiamehr, Mehdi Baradaran Tahoori, Sani R. Nassif
2013 C conf
VLSI-SoC
Sani R. Nassif, Yale N. Patt, Magdy S. Abadir
2013 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Rani S. Ghaida, Kanak B. Agarwal, Sani R. Nassif, Xin Yuan, Lars Liebmann, Puneet Gupta
2013 A* conf
DAC
Jörg Henkel, Lars Bauer, Nikil D. Dutt, Puneet Gupta, Sani R. Nassif, Muhammad Shafique, Mehdi Baradaran Tahoori, Norbert Wehn
2013 conf
ISQED
Zhong Guan, Malgorzata Marek-Sadowska, Sani R. Nassif
2013 C conf
ISCAS
Binjie Cheng, Xingsheng Wang, Andrew R. Brown, Jente B. Kuang, Dave Reid, Campbell Millar, Sani R. Nassif, Asen Asenov
2013 conf
ISQED
Sani R. Nassif, Gi-Joon Nam, Shayak Banerjee
2012 A conf
ICCAD
Zhuo Li, Raju Balasubramanian, Frank Liu, Sani R. Nassif
2012 J jnl
Integr.
Anand Ramalingam, Ashish Kumar Singh, Sani R. Nassif, Gi-Joon Nam, Michael Orshansky, David Z. Pan
2012 Misc conf
VTS
Eun Jung Jang, Anne Gattiker, Sani R. Nassif, Jacob A. Abraham
2012 conf
ISPD
Shayak Banerjee, Kanak B. Agarwal, Sani R. Nassif
2012 conf
ICICDT
Rani S. Ghaida, Kanak B. Agarwal, Sani R. Nassif, Xin Yuan, Lars W. Liebmann, Puneet Gupta
2012 conf
ASP-DAC
Vijay Janapa Reddi, David Z. Pan, Sani R. Nassif, Keith A. Bowman
2012 A* conf
DAC
Rouwaida Kanj, Rajiv V. Joshi, Zhuo Li, Jerry Hayes, Sani R. Nassif
2011 A conf
ICCAD
Zhuo Li, Raju Balasubramanian, Frank Liu, Sani R. Nassif
2011 A conf
ICCAD
Rani S. Ghaida, Kanak B. Agarwal, Sani R. Nassif, Xin Yuan, Lars Liebmann, Puneet Gupta
2011 A conf
ICCAD
Rouwaida Kanj, Tong Li, Rajiv V. Joshi, Kanak Agarwal, Ali Sadigh, David Winston, Sani R. Nassif
2011 conf
ISQED
Shayak Banerjee, Kanak B. Agarwal, Sani R. Nassif, James A. Culp, Lars Liebmann, Michael Orshansky
2011 Misc conf
VTS
Eun Jung Jang, Anne E. Gattiker, Sani R. Nassif, Jacob A. Abraham
2011 conf
CICC
Shayak Banerjee, Kanak B. Agarwal, Sani R. Nassif
2011 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Xiaoji Ye, Wei Dong, Peng Li, Sani R. Nassif
2011 conf
Asian Test Symposium
Eun Jung Jang, Jaeyong Chung, Anne E. Gattiker, Sani R. Nassif, Jacob A. Abraham
2011 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Chin-Hsiung Hsu, Yao-Wen Chang, Sani R. Nassif
2011 J jnl
IEEE Trans. Very Large Scale Integr. Syst.
Yun Ye, Frank Liu, Min Chen, Sani R. Nassif, Yu Cao
2011 J jnl
IEEE Trans. Circuits Syst. I Regul. Pap.
Jente B. Kuang, Jeremy D. Schaub, Fadi H. Gebara, Dieter F. Wendel, Thomas Fröhnel, Sudesh Saroop, Sani R. Nassif, Kevin J. Nowka
2011 J jnl
VLSI Design
Rouwaida Kanj, Rajiv V. Joshi, Sani R. Nassif
2011 C conf
ISCAS
Mehrdad Majzoobi, Golsa Ghiaasi, Farinaz Koushanfar, Sani R. Nassif
2010 J jnl
IEEE Des. Test Comput.
Sani R. Nassif
2010 conf
CICC
Jente B. Kuang, Jeremy D. Schaub, Fadi H. Gebara, Dieter F. Wendel, Sudesh Saroop, Tuyet Nguyen, Thomas Fröhnel, Antje Müller, Christopher M. Durham, Rolf Sautter, Bryan Lloyd, Bryan J. Robbins, Juergen Pille, Sani R. Nassif, Kevin J. Nowka
2010 A conf
DATE
Shayak Banerjee, Kanak B. Agarwal, Chin Ngai Sze, Sani R. Nassif, Michael Orshansky
2010 A conf
DATE
Sani R. Nassif, Nikil Mehta, Yu Cao
2010 J jnl
IEEE Trans. Very Large Scale Integr. Syst.
Ritu Singhal, Asha Balijepalli, Anupama R. Subramaniam, Chi-Chao Wang, Frank Liu, Sani R. Nassif, Yu Cao
2010 conf
ISPD
Sani R. Nassif, Kevin J. Nowka
2010 A conf
ISLPED
Rouwaida Kanj, Rajiv V. Joshi, Sani R. Nassif
2010 A conf
ICCAD
Chin-Hsiung Hsu, Yao-Wen Chang, Sani R. Nassif
2010 conf
ASAP
Sani R. Nassif
2009 A conf
ICCAD
Rouwaida Kanj, Rajiv V. Joshi, Chad Adams, James D. Warnock, Sani R. Nassif
2009 A conf
DATE
Sherief Reda, Sani R. Nassif
2009 A conf
ICCAD
Chin-Hsiung Hsu, Yao-Wen Chang, Sani R. Nassif
2009 conf
ISQED
Rouwaida Kanj, Rajiv V. Joshi, Jente B. Kuang, J. Kim, Mesut Meterelliyoz, William R. Reohr, Sani R. Nassif, Kevin J. Nowka
2009 conf
ISQED
Nancy Ying Zhou, Rouwaida Kanj, Kanak Agarwal, Zhuo Li, Rajiv V. Joshi, Sani R. Nassif, Weiping Shi
2009 A conf
ICCAD
Aditya Bansal, Rama N. Singh, Rouwaida Kanj, Saibal Mukhopadhyay, Jin-Fuw Lee, Emrah Acar, Amith Singhee, Keunwoo Kim, Ching-Te Chuang, Sani R. Nassif, Fook-Luen Heng, Koushik K. Das
2008 A ed.
ICCAD
Sani R. Nassif, Jaijeet S. Roychowdhury
2008 conf
ISQED
Victoria Wang, Kanak Agarwal, Sani R. Nassif, Kevin J. Nowka, Dejan Markovic
2008 conf
ISQED
Rouwaida Kanj, Zhuo Li, Rajiv V. Joshi, Frank Liu, Sani R. Nassif
2008 conf
ASP-DAC
Rajeshwary Tayade, Sani R. Nassif, Jacob A. Abraham
2008 conf
CICC
Kevin J. Nowka, Sani R. Nassif, Kanak Agarwal
2008 Misc conf
VLSI Design
Fadi J. Kurdahi, Nikil D. Dutt, Ahmed M. Eltawil, Sani R. Nassif
2008 A conf
DATE
Diana Marculescu, Sani R. Nassif
2008 book
Michael Orshansky, Sani R. Nassif, Duane S. Boning
2008 A conf
ICCAD
Xiaoji Ye, Wei Dong, Peng Li, Sani R. Nassif
2008 conf
PATMOS
Sani R. Nassif
2008 ch.
Handbook of Algorithms for Physical Design Automation
Haihua Su, Sani R. Nassif
2008 conf
ASP-DAC
Sani R. Nassif
2008 conf
CICC
Sani R. Nassif
2008 A conf
ISLPED
Rouwaida Kanj, Rajiv V. Joshi, Zhuo Li, Jente B. Kuang, Hung C. Ngo, Nancy Ying Zhou, Weiping Shi, Sani R. Nassif
2008 conf
ISQED
Rouwaida Kanj, Rajiv V. Joshi, Keunwoo Kim, Richard Williams, Sani R. Nassif
2008 A* conf
DAC
Yun Ye, Frank Liu, Sani R. Nassif, Yu Cao
2008 conf
ASP-DAC
Sani R. Nassif
2008 J jnl
IEEE Trans. Very Large Scale Integr. Syst.
Kanak Agarwal, Sani R. Nassif
2007 A* conf
DAC
Anand Ramalingam, Ashish Kumar Singh, Sani R. Nassif, Michael Orshansky, David Z. Pan
2007 A* conf
DAC
Kanak Agarwal, Sani R. Nassif
2007 conf
ACM Great Lakes Symposium on VLSI
Rajeshwary Tayade, Vijay Kiran Kalyanam, Sani R. Nassif, Michael Orshansky, Jacob A. Abraham
2007 conf
ISQED
Rouwaida Kanj, Rajiv V. Joshi, Jayakumaran Sivagnaname, Jente B. Kuang, Dhruva Acharyya, Tuyet Nguyen, Chandler McDowell, Sani R. Nassif
2007 conf
ESSCIRC
Sani R. Nassif
2007 J jnl
CoRR
Peng Li, Frank Liu, Xin Li, Lawrence T. Pileggi, Sani R. Nassif
2007 A* conf
DAC
Ritu Singhal, Asha Balijepalli, Anupama R. Subramaniam, Frank Liu, Sani R. Nassif, Yu Cao
2007 conf
ESSCIRC
Wei Zhao, Yu Cao, Frank Liu, Kanak Agarwal, Dhruva Acharyya, Sani R. Nassif, Kevin J. Nowka
2006 conf
ISQED
Anand Ramalingam, David Z. Pan, Frank Liu, Sani R. Nassif
2006 A conf
ICCAD
Anand Ramalingam, Gi-Joon Nam, Ashish Kumar Singh, Michael Orshansky, Sani R. Nassif, David Z. Pan
2006 A conf
ICCAD
Bin Zhang, Ari Arapostathis, Sani R. Nassif, Michael Orshansky
2006 C conf
ISCAS
Emrah Acar, Kanak Agarwal, Sani R. Nassif
2006 conf
CICC
Bhavna Agrawal, Frank Liu, Sani R. Nassif
2006 J jnl
IEEE Des. Test Comput.
T. M. Mak, Sani R. Nassif
2006 J jnl
IBM J. Res. Dev.
Kerry Bernstein, David J. Frank, Anne E. Gattiker, Wilfried Haensch, Brian L. Ji, Sani R. Nassif, Edward J. Nowak, Dale J. Pearson, Norman J. Rohrer
2006 C conf
ISCAS
Sani R. Nassif, Kanak Agarwal, Emrah Acar
2006 A* conf
DAC
Rouwaida Kanj, Rajiv V. Joshi, Sani R. Nassif
2006 A conf
ISLPED
Sani R. Nassif
2006 conf
ISQED
Praveen Elakkumanan, Jente B. Kuang, Kevin J. Nowka, Ramalingam Sridhar, Rouwaida Kanj, Sani R. Nassif
2006 A* conf
DAC
Kanak Agarwal, Sani R. Nassif
2006 conf
ISQED
Fadi J. Kurdahi, Ahmed M. Eltawil, Young-Hwan Park, Rouwaida Kanj, Sani R. Nassif
2006 A* conf
DAC
Sani R. Nassif, Vijay Pitchumani, Norma Rodriguez, Dennis Sylvester, Clive Bittlestone, Riko Radojcic
2005 conf
ISQED
Sani R. Nassif, Zhuo Li
2005 conf
ISPD
Rajeev R. Rao, David T. Blaauw, Dennis Sylvester, Charles J. Alpert, Sani R. Nassif
2005 C conf
ICCD
Hailin Jiang, Malgorzata Marek-Sadowska, Sani R. Nassif
2005 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Haifeng Qian, Sani R. Nassif, Sachin S. Sapatnekar
2005 J jnl
J. Low Power Electron.
Emrah Acar, Anirudh Devgan, Sani R. Nassif
2005 A conf
DATE
Peng Li, Frank Liu, Xin Li, Lawrence T. Pileggi, Sani R. Nassif
2005 Misc conf
VLSI Design
Anirudh Devgan, Sani R. Nassif
2005 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Haifeng Qian, Sani R. Nassif, Sachin S. Sapatnekar
2005 conf
ISCAS (1)
Rahul M. Rao, Kanak Agarwal, Dennis Sylvester, Himanshu Kaul, Richard B. Brown, Sani R. Nassif
2005 A conf
ITC
Ramyanshu Datta, Sani R. Nassif, Robert K. Montoye, Jacob A. Abraham
2005 A* conf
DAC
Sani R. Nassif, Paul S. Zuchowski, Claude Moughanni, Mohamed Moosa, Stephen D. Posluszny, Ward Vercruysse
2004 A conf
ICCAD
Haifeng Qian, Joseph N. Kozhaya, Sani R. Nassif, Sachin S. Sapatnekar
2004 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Haihua Su, Jiang Hu, Sachin S. Sapatnekar, Sani R. Nassif
2004 A conf
ISLPED
Rahul M. Rao, Kanak Agarwal, Dennis Sylvester, Richard B. Brown, Kevin J. Nowka, Sani R. Nassif
2004 conf
ISPD
Haifeng Qian, Sani R. Nassif, Sachin S. Sapatnekar
2004 J jnl
IEEE Des. Test Comput.
Juan Antonio Carballo, Sani R. Nassif
2004 A conf
ICCAD
Sani R. Nassif, Duane S. Boning, Nagib Hakim
2004 A conf
ISLPED
Sani R. Nassif
2004 A* conf
DAC
Kanak Agarwal, Dennis Sylvester, David T. Blaauw, Frank Liu, Sani R. Nassif, Sarma B. K. Vrudhula
2003 A conf
ISLPED
Haihua Su, Frank Liu, Anirudh Devgan, Emrah Acar, Sani R. Nassif
2003 J jnl
IEEE Des. Test Comput.
Sani R. Nassif, Soha Hassoun
2003 A conf
ISLPED
Emrah Acar, Anirudh Devgan, Rahul M. Rao, Ying Liu, Haihua Su, Sani R. Nassif, Jeffrey L. Burns
2003 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Haihua Su, Sachin S. Sapatnekar, Sani R. Nassif
2003 conf
ISVLSI
Ravishankar Arunachalam, Emrah Acar, Sani R. Nassif
2003 A* conf
DAC
Haihua Su, Emrah Acar, Sani R. Nassif
2003 conf
ASP-DAC
Emrah Acar, Ravishankar Arunachalam, Sani R. Nassif
2003 A* conf
DAC
Haifeng Qian, Sani R. Nassif, Sachin S. Sapatnekar
2002 A conf
DATE
Emrah Acar, Sani R. Nassif, Lawrence T. Pileggi
2002 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Joseph N. Kozhaya, Sani R. Nassif, Farid N. Najm
2002 conf
ISPD
Haihua Su, Sachin S. Sapatnekar, Sani R. Nassif
2002 A* conf
DAC
Haihua Su, Jiang Hu, Sachin S. Sapatnekar, Sani R. Nassif
2002 conf
PATMOS
Juan Antonio Carballo, Sani R. Nassif
2002 conf
ISCAS (5)
Anne E. Gattiker, Sani R. Nassif, Rashmi Dinakar, Chris Long
2002 conf
SLIP
Sani R. Nassif, Onsi Fakhouri
2002 conf
Timing Issues in the Specification and Synthesis of Digital Systems
Duane S. Boning, Joseph Panganiban, Karen Gonzalez-Valentin, Sani R. Nassif, Chandler McDowell, Anne E. Gattiker, Frank Liu
2002 conf
ISQED
Emrah Acar, Sani R. Nassif, Ying Liu, Lawrence T. Pileggi
2001 conf
ISQED
Emrah Acar, Lawrence T. Pileggi, Sani R. Nassif, Ying Liu
2001 conf
ASP-DAC
Hidetoshi Onodera, Andrew B. Kahng, Wayne Wei-Ming Dai, Sani R. Nassif, Juho Kim, Akira Tanabe, Toshihiro Hattori
2001 conf
ICECS
Joseph N. Kozhaya, Sani R. Nassif, Farid N. Najm
2001 conf
CICC
Sani R. Nassif
2001 conf
ASP-DAC
Sani R. Nassif
2001 A conf
ICCAD
Joseph N. Kozhaya, Sani R. Nassif, Farid N. Najm
2001 conf
ISQED
Anne E. Gattiker, Sani R. Nassif, Rashmi Dinakar, Chris Long
2000 A* conf
DAC
Vikas Mehrotra, Shiou Lin Sam, Duane S. Boning, Anantha P. Chandrakasan, Rakesh Vallishayee, Sani R. Nassif
2000 conf
ISQED
Sani R. Nassif
2000 A conf
DATE
Sani R. Nassif
2000 A* conf
DAC
Sani R. Nassif, Joseph N. Kozhaya
2000 A* conf
DAC
Ying Liu, Sani R. Nassif, Lawrence T. Pileggi, Andrzej J. Strojwas
2000 C conf
ISCAS
Sani R. Nassif, Joseph N. Kozhaya
2000 A* conf
DAC
N. S. Nagaraj, Andrzej J. Strojwas, Sani R. Nassif, Ray Hokinson, Tak Young, Wonjae L. Kang, David Overhauser, Sung-Mo Kang
1999 A conf
ICCAD
Sani R. Nassif, Tuyen V. Nguyen
1998 conf
SBCCI
A. Carvalho, Fadi J. Kurdahi, Sani R. Nassif
1997 conf
ISPD
David P. LaPotin, Uttam Ghoshal, Eli Chiprout, Sani R. Nassif
1986 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Sani R. Nassif, Andrzej J. Strojwas, Stephen W. Director
1986 A* conf
DAC
Luís M. Vidigal, Sani R. Nassif, Stephen W. Director
1984 J jnl
Integr.
David P. LaPotin, Sani R. Nassif, Jayanth V. Rajan, Michael L. Bushnell, John A. Nestor
1984 J jnl
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Sani R. Nassif, Andrzej J. Strojwas, Stephen W. Director