Sentence:  These amendments to the Vocational Rehabilitation Act were designed to help provide for more specialized rehabilitation facilities , for more sheltered and `` half-way '' workshops , for greater numbers of adequately trained personnel , for more comprehensive services to individuals ( particularly to the homebound and the blind ) , and for other administrative <WSD>improvements</WSD> to increase the program 's overall effectiveness . 
Meaning of the word marked with <WSD> tags:  the act of improving something