Find out more about these discoveries and what they mean for improving the health of people in the united states and all around the globe other nih institutes including the eunice kennedy shriver national institute of child health and human development and national institute on alcohol abuse and alcoholism also support research to better control and ultimately end the hiv aids pandemic. Recent advances in aids vaccine research and development johnston mi1 noe js killen jy author information 1division of aids national institute of allergy and infectious diseases national institutes of health bethesda maryland 20892 there is an urgent need for a prophylactic vaccine to protect individuals from aids and to help abate the growing epidemic in october 1993 the . The last 2 years have seen tremendous advances in the ability to treat hiv type 1 hiv 1 infection fueled in part by new discoveries on the biology of the virus many patients have gained years of life thanks to the introduction of new treatment regimens nonetheless much remains to be accomplished the newer anti hiv 1 regimens do not fully eliminate the virus infection thereby requiring . Volume 8 number 3 2004 this review discusses the challenges in hearing aid design and fitting and the recent devel opments in advanced signal processing technologies to meet these challenges the first part of the review discusses the basic concepts and the building blocks of digital signal processing algorithms namely the signal detection and analysis unit the decision rules and the . Volume 8 number 4 2004 this is the second part of a review on the challenges and recent developments in hearing aids feedback and the occlusion effect pose great challenges in hearing aid design and usage yet conventional solutions to feedback and the occlusion effect often create a dilemma the solution to one often leads to the other this review discusses the advanced signal processing