منابع مشابه
Moving towards a Fully Automatic Knowledge Assessment Tool
Information about a student’s level or state of knowledge is a key aspect for efficient, personalized learning activities. E-learning systems gain such information in two ways: directly by examining users’ self-assessment and administering predefined tests and indirectly by making inferences on observed user behaviors. However, most of the current solution approaches either demand excessive man...
متن کاملMoving towards a Competitive Fully Enzymatic Biodiesel Process
Enzymatic biodiesel synthesis can solve several problems posed by the alkaline-catalyzed transesterification but it has the drawback of being too expensive to be considered competitive. Costs can be reduced by lipase improvement, use of unrefined oils, evaluation of soluble/immobilized lipase preparations, and by combination of phospholipases with a soluble lipase for biodiesel production in a ...
متن کاملZigzag Stacks and m-Regular Linear Stacks
The contact map of a protein fold is a graph that represents the patterns of contacts in the fold. It is known that the contact map can be decomposed into stacks and queues. RNA secondary structures are special stacks in which the degree of each vertex is at most one and each arc has length of at least two. Waterman and Smith derived a formula for the number of RNA secondary structures of lengt...
متن کاملMaking the Brain More Tolerant, Safely and Inexpensively
Circulatory arrest and stroke are among the leading causes of death and disability worldwide, and they are difficult to treat. Only a limited number of therapeutic approaches have reached the bedside (eg, hypothermia and recombinant tissue plasminogen activator)1 and, unfortunately, relatively few patients are eligible. Virtually all experimental compounds tested so far have failed at some stag...
متن کاملStratifying Quotient Stacks and Moduli Stacks
Recent results in geometric invariant theory (GIT) for non-reductive linear algebraic group actions allow us to stratify quotient stacks of the form [X/H ], where X is a projective scheme and H is a linear algebraic group with internally graded unipotent radical acting linearly onX , in such a way that each stratum [S/H ] has a geometric quotient S/H . This leads to stratifications of moduli st...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: College & Research Libraries News
سال: 1989
ISSN: 2150-6698,0099-0086
DOI: 10.5860/crln.50.1.19