Michigan State University

About: Michigan State University is a education organization based out in East Lansing, Michigan, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 60109 authors who have published 137074 publications receiving 5633022 citations. The organization is also known as: MSU & Michigan State.

An identity-authentication system using fingerprints

Abstract: Fingerprint verification is an important biometric technique for personal identification. We describe the design and implementation of a prototype automatic identity-authentication system that uses fingerprints to authenticate the identity of an individual. We have developed an improved minutiae-extraction algorithm that is faster and more accurate than our earlier algorithm (1995). An alignment-based minutiae-matching algorithm has been proposed. This algorithm is capable of finding the correspondences between input minutiae and the stored template without resorting to exhaustive search and has the ability to compensate adaptively for the nonlinear deformations and inexact transformations between an input and a template. To establish an objective assessment of our system, both the Michigan State University and the National Institute of Standards and Technology NIST 9 fingerprint data bases have been used to estimate the performance numbers. The experimental results reveal that our system can achieve a good performance on these data bases. We also have demonstrated that our system satisfies the response-time requirement. A complete authentication procedure, on average, takes about 1.4 seconds on a Sun ULTRA I workstation (it is expected to run as fast or faster on a 200 HMz Pentium).

The influence of trainee attitudes on training effectiveness: test of a model

Abstract: Studies of the influence of trainee characteristics on training effectiveness have focused on the ability level necessary to learn program content. Motivational and environmental influences on training effectiveness have received little attention. The purpose of this study was to test an exploratory model describing the influence on trainee career and job attitudes on training outcomes (learning, behavior change, performance improvement). Results of the study suggest that job involvement and career planning are antecedents of learning and behavior change. Future research directions and practical implications of the results are discussed. Training can be defined as a planned learning experience designed to bring about permanent change in an individual's knowledge, attitudes, or skills (Campbell, Dunnette, Lawler, & Weick, 1970). Training effectiveness is usually determined by assessing some combination of the criteria presented in Kirkpatrick's (1967) hierarchical model of training outcomes. This hierarchy is composed of four levels of training effects: trainees' reactions to the program content and training process (reaction), knowledge or skill acquisition (learning), behavior change (behavior), and improvements in tangible individual or organizational outcomes such as turnover, accidents, or productivity (results). A number of training evaluation studies have provided support for the hierarchical model (e.g., Clement, 1978; Fromkin, Brandt, King, Sherwood, & Fisher, 1975; Latham, Wexley, & Purcell, 1975).

Biometric recognition: security and privacy concerns

Abstract: Biometrics offers greater security and convenience than traditional methods of personal recognition. In some applications, biometrics can replace or supplement the existing technology. In others, it is the only viable approach. But how secure is biometrics? And what are the privacy implications?.

Decreased Diversity of the Fecal Microbiome in Recurrent Clostridium difficile—Associated Diarrhea

Abstract: Antibiotic-associated diarrhea due to Clostridium difficile (CDAD) is thought to reflect colonization of a disrupted microbial community by the pathogen. We profiled the fecal microbiota of patients with CDAD (both initial and recurrent episodes) by culture-independent phylogenetic analysis of 16S rRNA-encoding gene sequences. Compared with those from control subjects and patients with an initial episode, the fecal communities in patients with recurrent CDAD were highly variable in bacterial composition and were characterized by markedly decreased diversity. Preservation and restoration of the microbial diversity could represent novel strategies for prevention and treatment of recurrent CDAD, which is often recalcitrant to existing therapies.

The fate of competing beneficial mutations in an asexual population

Abstract: In sexual populations, beneficial mutations that occur in different lineages may be recombined into a single lineage. In asexual populations, however, clones that carry such alternative beneficial mutations compete with one another and, thereby, interfere with the expected progression of a given mutation to fixation. From theoretical exploration of such ‘clonal interference’, we have derived (1) a fixation probability for beneficial mutations, (2) an expected substitution rate, (3) an expected coefficient of selection for realized substitutions, (4) an expected rate of fitness increase, (5) the probability that a beneficial mutation transiently achieves polymorphic frequency (≥ 1%), and (6) the probability that a beneficial mutation transiently achieves majority status. Based on (2) and (3), we were able to estimate the beneficial mutation rate and the distribution of mutational effects from changes in mean fitness in an evolving E. coli population.