General Rotorcraft Aeromechanical Stability Program (GRASP): Theory manual

The general rotorcraft aeromechanical stability program (GRASP) was developed to calculate aeroelastic stability for rotorcraft in hovering flight, vertical flight, and ground contact conditions. GRASP is described in terms of its capabilities and its philosophy of modeling. The equations of motion that govern the physical system are described, as well as the analytical approximations used to derive them. The equations include the kinematical equation, the element equations, and the constraint equations. In addition, the solution procedures used by GRASP are described. GRASP is capable of treating the nonlinear static and linearized dynamic behavior of structures represented by arbitrary collections of rigid-body and beam elements. These elements may be connected in an arbitrary fashion, and are permitted to have large relative motions. The main limitation of this analysis is that periodic coefficient effects are not treated, restricting rotorcraft flight conditions to hover, axial flight, and ground contact. Instead of following the methods employed in other rotorcraft programs. GRASP is designed to be a hybrid of the finite-element method and the multibody methods used in spacecraft analysis. GRASP differs from traditional finite-element programs by allowing multiple levels of substructure in which the substructures can move and/or rotate relative to others with no small-angle approximations. This capability facilitates the modeling of rotorcraft structures, including the rotating/nonrotating interface and the details of the blade/root kinematics for various types. GRASP differs from traditional multibody programs by considering aeroelastic effects, including inflow dynamics (simple unsteady aerodynamics) and nonlinear aerodynamic coefficients

Decision Making and Uncertainty

In an article intitled, “Epistemological Dead End and Ergonomic Disaster? The North Amercian Collections Inventory Project,” Journal of Academic Librarianship 13 (September 1987): 209-213, David Henige charges that academic libraries are deceiving themselves when they assign a number to a subject collection and claim that this number represents the strength of the collection. Assigning numbers or levels to subject collections is the methodology used by the RLG Conspectus to rate academic collections. This article by Davis and Saunders offers a counter argument, based on subjective probabilities, to justify the RLG procedure

The DNA Paternity Test: Legislating the Future Paternity Action

Individuals brought action under the Federal Tort Claims Act (FTCA), asserting that two of them had been switched at birth in 1946 and sent home with the wrong mothers due to the negligence of the United States

The DNA Paternity Test: Legislating the Future Paternity Action

Background:Investors brought Securities Act suits against corporation, individual directors, controlling shareholder, and investment bankers, alleging false registration statement

The DNA Paternity Test: Legislating the Future Paternity Action

This Article will first briefly examine the historical development of the paternity suit in the beginning of Part II. Part II will then focus upon the standards of proof, presumptions and affirmative defenses concomitant to the traditional paternity action. Part III will examine the concepts and legal applications behind blood group / genetic marker testing and the probability formulas derived from these tests used to exclude or include a putative father. Part IV will examine the technology behind DNA paternity testing and its current evidentiary admissibility. Part V will discuss some of the substantive and public policy issues relating to paternity determinations. Finally, in Part VI, we offer our version of a possible model uniform paternity statute which would create either a rebuttable or a conclusive presumption when the paternity test results achieve a certain level indicating paternity

Building resilience through supportive school environments: the Health Promoting Schools Framework as a model for promoting resilience in culturally diverse students

Recent World Health Reports note that five of the ten leading causes of disability worldwide relate to mental health problems. These reports refer specifically to the importance of strengthening protective factors as the foundation for positive mental health, namely, fostering resilience. Scant research has addressed determinants of resilience from an organisational or systemic perspective, particularly in settings such as schools or with vulnerable populations such as migrants and refugees. Contemporary interventions predominantly focus on risk factors, both as outcomes and evaluation indicators, rather than shifting to a strengths-based model. Increasing epidemiological evidence confirms that young people who are socially integrated and connected to school, and rate highly on measures of resilience, experience better socioeconomic, educational and health outcomes. This paper reviews key findings from several research projects conducted in Queensland during the past five years. Multilevel models are being used to investigate personal and systemic determinants of human and social capital related to resilience in children and young people within the school setting, including an investigation of protective factors from a cross-cultural perspective. Our research identifies those characteristics of the Health Promoting School that build supportive structures to foster children’s resilience. The empirical results of these key studies will be outlined. A salutogenic model of the pathways by which schools can build their capacity to enhance children’s resilience, through fostering human, cultural and social capital as the foundation for a supportive organisational environment, is presented, including discussion of emerging issues within transcultural mental health promotion

Providing Economic Incentives in Environmental Regulation

CHAIRMAN BREGER: Let me welcome you to this AdministrativeConference colloquy on providing economic incentives in environmentallitigation

An Evaluation of Protocols for UAV Science Applications

This paper identifies data transport needs for current and future science payloads deployed on the NASA Global Hawk Unmanned Aeronautical Vehicle (UAV). The NASA Global Hawk communication system and operational constrains are presented. The Genesis and Rapid Intensification Processes (GRIP) mission is used to provide the baseline communication requirements as a variety of payloads were utilized in this mission. User needs and desires are addressed. Protocols are matched to the payload needs and an evaluation of various techniques and tradeoffs are presented. Such techniques include utilization rate-base selective negative acknowledgement protocols and possible use of protocol enhancing proxies. Tradeoffs of communication architectures that address ease-of-use and security considerations are also presented