5,135 research outputs found
Conservation evo-devo: preserving biodiversity by understanding its origins
Unprecedented rates of species extinction increase the urgency for effective conservation biology management practices. Thus, any improvements in practice are vital and we suggest that conservation can be enhanced through recent advances in evolutionary biology, specifically advances put forward by evolutionary developmental biology (i.e., evo-devo). There are strong overlapping conceptual links between conservation and evo-devo whereby both fields focus on evolutionary potential. In particular, benefits to conservation can be derived from some of the main areas of evo-devo research, namely phenotypic plasticity, modularity and integration, and mechanistic investigations of the precise developmental and genetic processes that determine phenotypes. Using examples we outline how evo-devo can expand into conservation biology, an opportunity which holds great promise for advancing both fields
Shuttle/ISS EMU Failure History and the Impact on Advanced EMU PLSS Design
As the Shuttle/ISS EMU Program exceeds 30 years in duration and is still successfully supporting the needs of the International Space Station (ISS), a critical benefit of such a long running program with thorough documentation of system and component failures is the ability to study and learn from those failures when considering the design of the next generation space suit. Study of the subject failure history leads to changes in the Advanced EMU Portable Life Support System (PLSS) schematic, selected component technologies, as well as the planned manner of ground testing. This paper reviews the Shuttle/ISS EMU failure history and discusses the implications to the AEMU PLSS
Recent Developments: Sharp v. State: Despite Not Formally Objecting, Defense Counsel Properly Preserved the Issue of Whether the Circuit Court Inappropriately Weighed Defendant\u27s Decision Not to Plead Guilty at Sentencing; The Circuit Court Did Not Impermissibly Consider Defendant\u27s Rejection of the Plea Offer at Sentencing.
The Court of Appeals of Maryland held that defense counsel’s statements conveyed an objection to the circuit court’s perceived consideration of the defendant’s decision not to plead guilty at sentencing. Sharp v. State, 446 Md. 669, 113 A.3d 1089 (2016). As a result, the court held that defense counsel sufficiently preserved the issue for appellate review. Id. at 684, 113 A.3d at 1098. Ultimately, though, the circuit court’s statements at sentencing did not give rise to the inference of an impermissible consideration. Id. at 701, 113 A.3d at 1108
Recent Developments: Sharp v. State: Despite Not Formally Objecting, Defense Counsel Properly Preserved the Issue of Whether the Circuit Court Inappropriately Weighed Defendant\u27s Decision Not to Plead Guilty at Sentencing; The Circuit Court Did Not Impermissibly Consider Defendant\u27s Rejection of the Plea Offer at Sentencing.
The Court of Appeals of Maryland held that defense counsel’s statements conveyed an objection to the circuit court’s perceived consideration of the defendant’s decision not to plead guilty at sentencing. Sharp v. State, 446 Md. 669, 113 A.3d 1089 (2016). As a result, the court held that defense counsel sufficiently preserved the issue for appellate review. Id. at 684, 113 A.3d at 1098. Ultimately, though, the circuit court’s statements at sentencing did not give rise to the inference of an impermissible consideration. Id. at 701, 113 A.3d at 1108
Design and Testing of Suit Regulator Test Rigs
The next generation space suit requires additional capabilities for controlling and adjusting internal pressure compared to that of historical designs. Next generation suit pressures will range from slight pressure, for astronaut prebreathe comfort, to hyperbaric pressure levels for emergency medical treatment of decompression sickness. In order to test these regulators through-out their development life cycle, novel automated test rigs are being developed. This paper addresses the design philosophy, performance requirements, physical implementation, and test results with various units under test
Shuttle/ISS EMU Failure History and the Impact on Advanced EMU PLSS Design
As the Shuttle/ISS EMU Program exceeds 30 years in duration and is still supporting the needs of the International Space Station (ISS), a critical benefit of such a long running program with thorough documentation of system and component failures is the ability to study and learn from those failures when considering the design of the next generation space suit. Study of the subject failure history leads to changes in the Advanced EMU Portable Life Support System (PLSS) schematic, selected component technologies, as well as the planned manner of ground testing. This paper reviews the Shuttle/ISS EMU failure history and discusses the implications to the AEMU PLSS
What is wrong with consumerism
Contemporary consumerism is frequently the target of criticisms
by intellectuals, academics, religious spokesmen and commentators.
Five of the more common of these criticisms are selected for
analysis and examination; these being (a) the need criticism (b) the
materialism criticism (c) the addiction criticism (d) the selfishness
criticism, and (e) the irrationality criticism. Each is then shown
either to be misconceived or to lack empirical support
Advanced EMU Portable Life Support System (PLSS) and Shuttle/ISS EMU Schematics, A Comparison
In order to be able to adapt to differing vehicle interfaces such as suitport and airlock, adjust to varying vehicle pressure schedules, tolerate lower quality working fluids, and adapt to differing suit architectures as dictated by a range of mission architectures, the next generation space suit requires more adaptability and robustness over that of the current Shuttle/ISS Extra-vehicular Mobility Unit (EMU). While some features have been added to facilitate interfaces to differing vehicle and suit architectures, the key performance gains have been made via incorporation of new technologies such as the variable pressure regulators, Rapid Cycle Amine swing-bed, and Suit Water Membrane Evaporator. This paper performs a comparison between the Shuttle/ISS EMU PLSS schematic and the Advanced EMU PLSS schematic complete with a discussion for each difference
Shuttle/ISS EMU Failure History and the Impact on Advanced EMU Portable Life Support System (PLSS) Design
As the Shuttle/ISS EMU Program exceeds 35 years in duration and is still supporting the needs of the International Space Station (ISS), a critical benefit of such a long running program with thorough documentation of system and component failures is the ability to study and learn from those failures when considering the design of the next generation space suit. Study of the subject failure history leads to changes in the Advanced EMU Portable Life Support System (PLSS) schematic, selected component technologies, as well as the planned manner of ground testing. This paper reviews the Shuttle/ISS EMU failure history and discusses the implications to the AEMU PLSS
- …