ALPS generant tank and cell assembly

Diaphragm and balloon bladders for hydrazine expulsion in liquid propellant system and titanium tank fabricatio

Brownfields One-Stop Shop Forum: A Test Strategy for Inter-Agency Cooperation in Northeast Ohio

The Brownfields One Stop Shop (BOSS) is the culmination of a process created over a year ago that brought together several federal and local public agencies to address the complexities of applying resources to support brownfields redevelopment. The idea was originally developed by the United States Environmental Protection Agency’s Region 5 brownfields Project Manager, Edwin Smith, and by the United States Department of Housing and Urban Development’s Cleveland Office Community Builder, Paul Diegelman. Together, they developed an initial concept for a collaborative introductory meeting, and presented the idea to the Cleveland Federal Executive Board members. The project was accepted as a natural outgrowth of the broad federal outreach effort of the Federal Interagency Working Group on Brownfields. The BOSS is a locally based initiative

Thermal recoil force, telemetry, and the Pioneer anomaly

Precision navigation of spacecraft requires accurate knowledge of small forces, including the recoil force due to anisotropies of thermal radiation emitted by spacecraft systems. We develop a formalism to derive the thermal recoil force from the basic principles of radiative heat exchange and energy-momentum conservation. The thermal power emitted by the spacecraft can be computed from engineering data obtained from flight telemetry, which yields a practical approach to incorporate the thermal recoil force into precision spacecraft navigation. Alternatively, orbit determination can be used to estimate the contribution of the thermal recoil force. We apply this approach to the Pioneer anomaly using a simulated Pioneer 10 Doppler data set.Comment: 10 pages, 3 figures. Published versio

The Emperor\u27s New Clothes: A Survey of Significant Court Decisions Interpreting Pennsylvania\u27s Sovereign Immunity Act and Its Waivers

This article surveys and analyzes the history of sovereign immunity in the Commonwealth of Pennsylvania. The article traces the adoption of sovereign immunity, its abrogation by the Pennsylvania Supreme Court, and the General Assembly\u27s reaffirmation of the doctrine in the Sovereign Immunity Act. The article provides a review of the important sections of the Sovereign Immunity Act and examines many of the appellate decisions which have addressed the Act and the waivers of immunity contained therein

Independent analysis of the orbits of Pioneer 10 and 11

Independently developed orbit determination software is used to analyze the orbits of Pioneer 10 and 11 using Doppler data. The analysis takes into account the gravitational fields of the Sun and planets using the latest JPL ephemerides, accurate station locations, signal propagation delays (e.g., the Shapiro delay, atmospheric effects), the spacecrafts' spin, and maneuvers. New to this analysis is the ability to utilize telemetry data for spin, maneuvers, and other on-board systematic effects. Using data that was analyzed in prior JPL studies, the anomalous acceleration of the two spacecraft is confirmed. We are also able to put limits on any secondary acceleration (i.e., jerk) terms. The tools that were developed will be used in the upcoming analysis of recently recovered Pioneer 10 and 11 Doppler data files.Comment: 22 pages, 5 figures; accepted for publication in IJMP

Coastal Training Strategy for the Ohio Lake Erie Basin

An analysis of the market for coastal resources management training in Ohio’s Lake Erie basin identified the challenges faced by coastal decision-makers and the disparities currently existing within this market. The primary challenges identified were in the quality of instruction and in the types of training provided. Disparities indicated were with coordination, equipment and logistical factors, external and internal marketing and promotional assistance, funding, personnel and staff assistance, and legislative and regulatory concerns. These disparities are indications of opportunities to establish partnerships and collaborative networks to facilitate coordinated training initiatives; to re-examine and develop course content and locations to better meet the needs and expectations of decision-makers more effectively; and to develop strategies for the dissemination of training information and opportunities effectively and efficiently to decision-makers, policy makers, and training providers

The Study of the Pioneer Anomaly: New Data and Objectives for New Investigation

Radiometric tracking data from Pioneer 10 and 11 spacecraft has consistently indicated the presence of a small, anomalous, Doppler frequency drift, uniformly changing with a rate of ~6 x 10^{-9} Hz/s; the drift can be interpreted as a constant sunward acceleration of each particular spacecraft of a_P = (8.74 \pm 1.33) x 10^{-10} m/s^2. This signal is known as the Pioneer anomaly; the nature of this anomaly remains unexplained. We discuss the efforts to retrieve the entire data sets of the Pioneer 10/11 radiometric Doppler data. We also report on the recently recovered telemetry files that may be used to reconstruct the engineering history of both spacecraft using original project documentation and newly developed software tools. We discuss possible ways to further investigate the discovered effect using these telemetry files in conjunction with the analysis of the much extended Doppler data. We present the main objectives of new upcoming study of the Pioneer anomaly, namely i) analysis of the early data that could yield the direction of the anomaly, ii) analysis of planetary encounters, that should tell more about the onset of the anomaly, iii) analysis of the entire dataset, to better determine the anomaly's temporal behavior, iv) comparative analysis of individual anomalous accelerations for the two Pioneers, v) the detailed study of on-board systematics, and vi) development of a thermal-electric-dynamical model using on-board telemetry. The outlined strategy may allow for a higher accuracy solution for a_P and, possibly, will lead to an unambiguous determination of the origin of the Pioneer anomaly.Comment: 43 pages, 40 figures, 3 tables, minor changes before publicatio

Identifying Solar Flare Precursors Using Time Series of SDO/HMI Images and SHARP Parameters

We present several methods towards construction of precursors, which show great promise towards early predictions, of solar flare events in this paper. A data pre-processing pipeline is built to extract useful data from multiple sources, Geostationary Operational Environmental Satellites (GOES) and Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager (HMI), to prepare inputs for machine learning algorithms. Two classification models are presented: classification of flares from quiet times for active regions and classification of strong versus weak flare events. We adopt deep learning algorithms to capture both the spatial and temporal information from HMI magnetogram data. Effective feature extraction and feature selection with raw magnetogram data using deep learning and statistical algorithms enable us to train classification models to achieve almost as good performance as using active region parameters provided in HMI/Space-Weather HMI-Active Region Patch (SHARP) data files. Case studies show a significant increase in the prediction score around 20 hours before strong solar flare events

COMMENTARY: The Use of Focus Groups for Design and Implementation of Collaborative Environmental Administrative Programs: A Comparison of Two State-Level Processes in Ohio

Development and implementation of administrative programs are important steps in the process of change through public law and policy. These programs set the specific mechanisms that will be used to carry out the intent of the law or policy as best an agency can determine. Administrative personnel may involve the general public and stakeholders in program development and implementation in order to improve program design, increasingly used as part of collaborative environmental management strategies. This article examines the use of focus groups as a stakeholder participation method in collaborative program development and implementation processes in two different environmentally-oriented agency programs at the state level in Ohio—the Clean Ohio Revitalization Fund of the Ohio Department of Development, and the Ohio Coastal Resources Management Training Program of the Ohio Department of Natural Resources, NOAA, and the Ohio Sea Grant Program. The comparison confirms three categories of benefits in using focus groups: better program development and implementation through more in-depth and nuanced information from stakeholders, an enhanced administrative and civic capacity through development of a shared knowledge base, and an enhanced sense of legitimacy for the program among future program beneficiaries. The comparison also identified some constraints and challenges for using focus groups, including the importance of skilled facilitators with substantive knowledge of the environmental context of the program development process and the skills to resolve contentious stakeholder interactions when the processes are distributive in nature