There are many techniques of image enhancement. Their parameters are traditionally tuned by maximization of SNR criterion, which is unfortunately based on the knowledge of an ideal image. Our approach is based on Hartley entropy, its estimation, and differentiation. Resulting gradient of entropy is estimated without knowledge of ideal images, and it is a subject of minimization. Both SNR maximi...

Background and purpose: There are several ways to enhance marriage. Prevention and Relationship Enhancement Program (PREP) are among the methods of educating relationships. Relationship education programs have made a significant contribution to the growth and development of millions of couples. This study aimed to investigate the effectiveness of the  Prevention and Relationship Enhancement Pro...

This paper considers the adverse effects on speaker verification accuracy caused by two independent forms of speech signal degradation common in mobile communications. The two forms are packet loss in the communications system and ambient noise at the wireless device. The effects of these degradations are assessed independently on a common database of 2000 speakers. Baseline verification perfor...

This paper presents a novel image enhancement algorithm using a multilevel windowed inverse sigmoid (MWIS) function for rendering images captured under extremely non uniform lighting conditions. MWIS based image enhancement is a combination of three processes viz. adaptive intensity enhancement, contrast enhancement and color restoration. Adaptive intensity enhancement uses the non linear trans...

This study attempts to integrate the product and service marketing context into the framework of the drivers and the outcomes of B2B relationship value. Self-reporting survey was conducted to collect data from Taiwan's information and communication technology (ICT) industry. The empirical results reveal that the relationship benefits have greater effects on relationship value than relationship ...