Information Sciences, Volume 54

Volume 54, Number 1-2, March 1991

• Shashi K. Gadia, Chuen-Sing Yeung:
  Inadequacy of interval timestamps in temporal databases. 1-22
  
• Pushpa N. Rathie, Inder Jeet Taneja:
  Unified (r, s)-entropy and its bivariate measures. 23-39
  
• Peter M. G. Apers, Peter Scheuermann:
  Schema architectures and their relationship to transaction processing in distributed database systems. 41-66
  
• Arie Segev:
  Strategies for distributed query optimization. 67-88
  
• Rajani R. Joshi:
  Leader-independent nonparametric consistent algorithms for incremental learning. 89-102
  
• Renhong Zhao, Rakesh Govind:
  Algebraic characteristics of extended fuzzy numbers. 103-130
  
• S. N. Merchant, B. V. Rao:
  Coshar transform. 131-145
  
• Vijay Kumar, Meichun Hsu:
  A superior two-phase locking algorithm and its performance. 147-168
  
• Ming-Tat Ko, Richard C. T. Lee:
  On weighted rectilinear 2-center and 3-center problems. 169-190
  

Volume 54, Number 3, April 1991

• Sajal K. Das, Dilip Sarkar, V. K. Agrawal, Lalit M. Patnaik:
  Extended colored Petri net: An efficient tool for analyzing concurrent systems. 191-218
  
• John H. Halton:
  On the thickness of graphs of given degree. 219-238
  
• Prashant Palvia:
  An interactive DSS tool for physical database design. 239-262
  
• Gregory J. E. Rawlins, Derick Wood:
  Restricted-oriented convex sets. 263-281