Dr. Delen's research has appeared in major journals including Decision Support Systems, Communications of the ACM, Computers and Operations Research, Computers in Industry, journal of Production Operations Management, Artificial Intelligence in Medicine, and Expert Systems with Applications, among others. He recently published four textbooks: Advanced Data Mining Techniques with Springer, 2008; Decision Support and Business Intelligence Systems with Prentice Hall, 2021; Business Intelligence: A Managerial Approach, with Prentice Hall, 2021; and Practical Text Mining, with Elsevier, 2021. He is often invited to national and international conferences for keynote addresses on topics related to data/ text mining, business intelligence, decision support systems, and knowledge management. He served as the general co-chair for the 4th International Conference on Network Computing and Advanced Information Management (September 2-4, 2008, in Seoul, South Korea) and regularly chairs tracks and mini-tracks at various information systems conferences. He is the associate editor-in-chief for International journal of Experimental Algorithms, associ-ate editor for International journal of RF Technologies and journal of Decision Analytics, and is on the editorial boards of five other technical journals. His research and teaching interests are in data and text mining, decision support systems, knowledge management, business intelligence, and enterprise modeling.
Update: The 2021 winners of the Global Mobile Awards are here
Sustainable development perspectives confine to improve the geotechnical properties of weak soils by using such a material which has high engineering performance, less environmental impacts and is cost effective. Moreover, the eco-friendly-improved soil should also be resistive against the adverse environmental factors. So, the present paper focuses on the effects of wet-dry cycles on the durability of bio-improved sand. Xanthan gum (biopolymer) was used to improve sand collected from Muscat, capital city of Oman. The specimens prepared by mixing biopolymer and ordinary Portland cement with the sand were cured for 7, 14 and 28 days in controlled laboratory environment. Standard slake durability tests were peformed on the specimens to determine the slake durability index after each wet-dry cycle. The results indicated that a small proportion of biopolymer treatment to sand had similar slake durability characterstics which are comparable to the treatment with a high proportion of cement. However, in the environment friendly perspective, cementation induced by biopolymer takes precedence over the Portland cement. The qualitative description of biocemented sand elucidated by micrographs taken by scanning electron microscope (SEM) inferred the enhanced durability to the connection of sand particles through biopolymer. The authors believe that present study will contribute in the development of techniques for the application of biopolymer in eco-friendly ground improvement.