Endolithic microbial model for Martian exobiology: The road to extinction

Martian exobiology is based on the assumption that on early Mars, liquid water was present and that conditions were suitable for the evolution of life. The cause for life to disappear from the surface and the recognizable fingerprints of past microbial activity preserved on Mars are addressed. The Antarctic cryptoendolithic microbial ecosystem as a model for extinction in the deteriorating Martian environment is discussed

Group-Theoretical Derivation of Angular Momentum Eigenvalues in Spaces of Arbitrary Dimensions

The spectrum of the square of the angular momentum in arbitrary dimensions is derived using only group theoretical techniques. This is accomplished by application of the Lie algebra of the noncompact group O(2,1).Comment: 4 pages; to appear in Journal of Mathematical Physic

Quantum Mechanical Derivation of the Wallis Formula for π\pi

A famous pre-Newtonian formula for $\pi$ is obtained directly from the variational approach to the spectrum of the hydrogen atom in spaces of arbitrary dimensions greater than one, including the physical three dimensions.Comment: 4 pages; to appear in J. Math. Phys.; v2: minor typo fixe

Community Policing: Reinventing the Wheel?

Community Policing (CP) has been a much used, overused and abused term. Many blindly adopt it, others blindly reject it. This brief article argues that a cogent policing strategy that deploys CP should start with the focus on the epidemiology of crime and the understanding of how crime is produced. There is no need to reinvent the wheel of policing strategies. Just drive it

A Girl\u27s Right to Bare Arms: An Equal Protection Analysis of Public-School Dress Codes

Public schools throughout the country have faced heavy criticism for instituting dress codes that many perceive to be targeting girls and imposing overly restrictive requirements on their attire. Critics of public-school dress codes often take particular issue with the notion that restrictive dress codes are necessary to prevent classroom distractions. Because public schools are state actors, they must comply with constitutional requirements. Thus, when schools impose different rules on the basis of gender, those rules must comply with the Equal Protection Clause of the U.S. Constitution. This clause mandates that the government offer an exceedingly persuasive justification for any sex-based classification. Moreover, the justification offered by the school must be genuine and may not rely on nor perpetuate gender-based stereotypes. Courts have generally accepted schools’ arguments that their dress codes served the interests of student health and safety, preventing classroom distraction, and instilling morals and discipline. This Note evaluates the application of the Equal Protection Clause to public-school dress codes, explores the various school justifications that have been deemed acceptable, and argues that, under the standard set forth in Equal Protection jurisprudence, a school’s desire to prevent classroom distraction may no longer be an acceptable defense absent authentic evidence of its necessity

Actuator saturation and its influence on vibration reduction by actively controlled flaps

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/77213/1/AIAA-2001-1467-982.pd

Aeroelastic Response of Bird-Damaged Fan Blades Using a Coupled CFD/CSD Framework

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140712/1/6.2014-0334.pd

Forced and Aeroelastic Responses of Bird-Damaged Fan Blades: A Comparison and Its Implications

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140641/1/1.C033424.pd

Optimization of Flexible Flapping-Wing Kinematics in Hover

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140679/1/1.j053083.pd