Voice control of the space shuttle video system

A pilot voice control system developed at the Jet Propulsion Laboratory (JPL) to test and evaluate the feasibility of controlling the shuttle TV cameras and monitors by voice commands utilizes a commercially available discrete word speech recognizer which can be trained to the individual utterances of each operator. Successful ground tests were conducted using a simulated full-scale space shuttle manipulator. The test configuration involved the berthing, maneuvering and deploying a simulated science payload in the shuttle bay. The handling task typically required 15 to 20 minutes and 60 to 80 commands to 4 TV cameras and 2 TV monitors. The best test runs show 96 to 100 percent voice recognition accuracy

As interseções do self e as políticas: Uma pesquisa poética sobre a complexidade da formação de professores

This article explores the intersection of selves and policies for teacher educators in an era of teacher education reform. Borne out of a promise to one another to write about our experiences navigating increasingly complex market-driven, neoliberal attacks on our work and world, we collected data across several years that documented our attempt to break our silence (Lorde, 1977) and explore how we, as teacher educators, make sense of neoliberal reforms and policies in teacher preparation. We draw specifically on Dunn’s theory of the Hydra of Teacher Education (2016), alongside literature on reforms and policies in teacher preparation and teacher educators’ forms of resistance to frame our work, and utilize arts-based poetic inquiry methodology (Prendergast, 2009; Rath, 2001) to explore the real, everyday implications of educational policy in our lives and in our careers. The poems we created as a “performative act” (Prendergast, 2009, p. xxiii) revealed that our experiences seemed to follow a cycle from hopelessness, to silence, to acquiescence, to collective resistance. We look carefully at this last portion of the cycle in our work, wondering how, if at all, teacher educators can resist the neoliberalization of teacher preparation. We conclude with implications for research, policy, and the practice of teacher education as we write to understand, write to resist, and write to survive.Este artículo explora la intersección del yo y las políticas para la educación del profesorado en una era de reforma de la formación docente. Nacidos de una promesa mutua de escribir sobre nuestras experiencias navegando cada vez más complejos ataques neoliberales impulsados por el mercado en nuestro trabajo y en el mundo, recopilamos datos durante varios años que documentaban nuestro intento de romper nuestro silencio (Lorde, 1977) y exploramos cómo nosotros damos sentido a las reformas y políticas neoliberales en la preparación de los docentes, como formadores de docentes. Nos referimos específicamente a la teoría de Dunn en Hydra of Teacher Education (2016), junto con la literatura sobre reformas y políticas de preparación docente y las formas de resistencia de los formadores de docentes para enmarcar nuestro trabajo, y utilizar una metodología de investigación poética basada en las artes (Prendergast, 2009; Rath, 2001) para explorar las implicaciones reales y cotidianas de la política educativa en nuestras vidas y en nuestras carreras. Los poemas que creamos como un “acto performativo” (Prendergast, 2009, p. Xxiii) revelaron que nuestras experiencias parecían seguir un ciclo desde la desesperanza, al silencio, a la aquiescencia, a la resistencia colectiva. Miramos detenidamente esta última parte del ciclo en nuestro trabajo, preguntándonos cómo, si es que lo hacen, los formadores de docentes pueden resistir la neoliberalización de la preparación del maestro. Concluimos con implicaciones para la investigación, las políticas y la práctica de la formación docente mientras escribimos para comprender, escribimos para resistir y escribimos para sobrevivir.Este artigo explora a interseção do eu e das políticas para a formação de professores em uma era de reforma da formação docente. Nascido de uma promessa mútua de escrever sobre nossas experiências explorando ataques neoliberais cada vez mais complexos, impulsionados pelo mercado em nosso trabalho e no mundo, recolhemos dados por vários anos documentando nossa tentativa de romper nosso silêncio (Lorde, 1977) e nós exploramos nós damos sentido às reformas e políticas neoliberais na preparação de professores como como educadores de professores. Referimo-nos especificamente à teoria de Dunn na Hydra of Teacher Education (2016), juntamente com a literatura sobre reformas e políticas de preparação de professores e as formas de resistência dos educadores de professores para enquadrar nosso trabalho e usar uma metodologia de pesquisa poética com base nas artes (Prendergast, 2009; Rath, 2001) para explorar as implicações reais e diárias da política educacional em nossas vidas e carreiras. Os poemas que criamos como um “ato performativo” (Prendergast, 2009, p. xxiii) revelaram que nossas experiências pareciam acompanhar o ciclo do desespero, do silêncio, da aquiescência, da resistência coletiva. Observamos atentamente esta última parte do ciclo em nosso trabalho, perguntando-nos como, se o fizerem, educadores de professores podem resistir à neoliberalização da preparação de professores. Concluímos com implicações para a pesquisa, políticas e práticas de formação de professores à medida que escrevemos para compreender, escrever para resistir e escrever para sobreviver

Tetrahymena thermophila and Candida albicans Group I intron-derived ribozymes can catalyze the trans-excision-splicing reaction

Group I intron-derived ribozymes can catalyze a variety of non-native reactions. For the trans-excision-splicing (TES) reaction, an intron-derived ribozyme from the opportunistic pathogen Pneumocystis carinii catalyzes the excision of a predefined region from within an RNA substrate with subsequent ligation of the flanking regions. To establish TES as a general ribozyme-mediated reaction, intron-derived ribozymes from Tetrahymena thermophila and Candida albicans, which are similar to but not the same as that from Pneumocystis, were investigated for their propensity to catalyze the TES reaction. We now report that the Tetrahymena and Candida ribozymes can catalyze the excision of a single nucleotide from within their ribozyme-specific substrates. Under the conditions studied, the Tetrahymena and Candida ribozymes, however, catalyze the TES reaction with lower yields and rates [Tetrahymena (kobs) = 0.14/min and Candida (kobs) = 0.34/min] than the Pneumocystis ribozyme (kobs = 3.2/min). The lower yields are likely partially due to the fact that the Tetrahymena and Candida catalyze additional reactions, separate from TES. The differences in rates are likely partially due to the individual ribozymes ability to effectively bind their 3′ terminal guanosines as intramolecular nucleophiles. Nevertheless, our results demonstrate that group I intron-derived ribozymes are inherently able to catalyze the TES reaction

\u3cem\u3eTetrahymena thermophila\u3c/em\u3e and \u3cem\u3eCandida albicans\u3c/em\u3e Group I Intron-Derived Ribozymes Can Catalyze the Trans-Excision-Splicing Reaction

Group I intron-derived ribozymes can catalyze a variety of non-native reactions. For the trans-excision-splicing (TES) reaction, an intron-derived ribozyme from the opportunistic pathogen Pneumocystis carinii catalyzes the excision of a predefined region from within an RNA substrate with subsequent ligation of the flanking regions. To establish TES as a general ribozyme-mediated reaction, intron-derived ribozymes from Tetrahymena thermophila and Candida albicans, which are similar to but not the same as that from Pneumocystis, were investigated for their propensity to catalyze the TES reaction. We now report that the Tetrahymena and Candida ribozymes can catalyze the excision of a single nucleotide from within their ribozyme-specific substrates. Under the conditions studied, the Tetrahymena and Candida ribozymes, however, catalyze the TES reaction with lower yields and rates [Tetrahymena (kobs) = 0.14/min and Candida (kobs) = 0.34/min] than the Pneumocystis ribozyme (kobs = 3.2/min). The lower yields are likely partially due to the fact that the Tetrahymena and Candida catalyze additional reactions, separate from TES. The differences in rates are likely partially due to the individual ribozymes ability to effectively bind their 3′ terminal guanosines as intramolecular nucleophiles. Nevertheless, our results demonstrate that group I intron-derived ribozymes are inherently able to catalyze the TES reaction

Editorial : Symbiosis in a Changing Environment

& nbsp;& nbsp;Non peer reviewe

Providing Strategic Direction and Marketing Insights for a Mature Aquatic Facility

As local communities all over the country are facing declining usage of aquatic centers as they age, recreation departments must decide how to address the increasing loss of revenue while also continuing to provide a desired service. The purpose of this study was to evaluate the current situation of a municipal aquatic center located in the Southeast United States in order to determine what steps could be taken to increase usage and decrease negative cash flow. While the Center is still very functional, little has been done in recent decades to update or market it and usage has greatly declined. The study reports how the town sought outside expertise in order to determine what elements of the marketing mix may be better used to minimize the negative cash flow generated by the Center and direct future strategic planning. The SWOT analysis developed through the use of a nominal group is described with the panel\u27s recommendations for future steps and development options included. The town is now able to make an informed decision as to how best spend limited resources and direct efforts to not only resuscitate their aging facility, but also enhance the image of the town and develop much needed new revenue streams

First Results from SPARO: Evidence for Large-Scale Toroidal Magnetic Fields in the Galactic Center

We have observed the linear polarization of 450 micron continuum emission from the Galactic center, using a new polarimetric detector system that is operated on a 2 m telescope at the South Pole. The resulting polarization map extends ~ 170 pc along the Galactic plane and ~ 30 pc in Galactic latitude, and thus covers a significant fraction of the central molecular zone. Our map shows that this region is permeated by large-scale toroidal magnetic fields. We consider our results together with radio observations that show evidence for poloidal fields in the Galactic center, and with Faraday rotation observations. We compare all of these observations with the predictions of a magnetodynamic model for the Galactic center that was proposed in order to explain the Galactic Center Radio Lobe as a magnetically driven gas outflow. We conclude that the observations are basically consistent with the model.Comment: 11 pages, 2 figures, 1 table, submitted to ApJ Let

Statistical Assessment of Shapes and Magnetic Field Orientations in Molecular Clouds through Polarization Observations

We present a novel statistical analysis aimed at deriving the intrinsic shapes and magnetic field orientations of molecular clouds using dust emission and polarization observations by the Hertz polarimeter. Our observables are the aspect ratio of the projected plane-of-the-sky cloud image, and the angle between the mean direction of the plane-of-the-sky component of the magnetic field and the short axis of the cloud image. To overcome projection effects due to the unknown orientation of the line-of-sight, we combine observations from 24 clouds, assuming that line-of-sight orientations are random and all are equally probable. Through a weighted least-squares analysis, we find that the best-fit intrinsic cloud shape describing our sample is an oblate disk with only small degrees of triaxiality. The best-fit intrinsic magnetic field orientation is close to the direction of the shortest cloud axis, with small (~24 deg) deviations toward the long/middle cloud axes. However, due to the small number of observed clouds, the power of our analysis to reject alternative configurations is limited.Comment: 14 pages, 8 figures, accepted for publication in MNRA

Plasmodium falciparum (Haemosporodia: Plasmodiidae) and O'nyong-nyong virus development in a transgenic Anopheles gambiae (Diptera: Culicidae) strain

Transgenic Anopheles gambiae Giles (Diptera: Culicidae) mosquitoes have been developed that confer sexual sterility on males that carry a transgene encoding a protein which cuts ribosomal DNA. A relevant risk concern with transgenic mosquitoes is that their capacity to transmit known pathogens could be greater than the unmodified form. In this study, the ability to develop two human pathogens in these transgenic mosquitoes carrying a homing endonuclease which is expressed in the testes was compared with its nontransgenic siblings. Infections were performed with Plasmodium falciparum (Welch) and o'nyong-nyong virus (ONNV) and the results between the transgenic and nontransgenic sibling females were compared. There was no difference observed with ONNV isolate SG650 in intrathoracic infections or the 50% oral infectious dose measured at 14 d postinfection or in mean body titers. Some significant differences were observed for leg titers at the medium and highest doses for those individuals in which virus titer could be detected. No consistent difference was observed between the transgenic and nontransgenic comparator females in their ability to develop P. falciparum NF54 strain parasites. This particular transgene caused no significant effect in the ability of mosquitoes to become infected by these two pathogens in this genetic background. These results are discussed in the context of risk to human health if these transgenic individuals were present in the environment

Navegando no terreno disputado da política e prática da formação de professores: Os autores respondem a SCALE

Stanford Center for Assessment, Learning, and Equity (SCALE) provided a commentary on the manuscripts in the first part of this special issue, which highlighted the benefits of edTPA and the necessity for such assessment programs to improve teacher education and strengthen teaching practices. In turn, the authors responded to the SCALE commentary. The authors’ responses raise concerns about equity, fairness, and unintended consequences of teacher performance assessments. These responses highlight the need for continued dialogue on ways to improve teacher education and strengthen the teaching profession.Stanford Center for Assessment, Learning and Equity (SCALE) ofreció un comentario sobre los manuscritos en la primera parte de esta edicion especial, que destacó los beneficios de edTPA y la necesidad de dichos programas de evaluación para mejorar la formación docente y para fortalecer las prácticas docentes. A la vez, los autores respondieron al comentario SCALE. Las respuestas de los autores plantean inquietudes sobre la equidad, la rectitud y las consecuencias involuntarias de las evaluaciones del desempeño docente. Estas respuestas revelan la necesidad de un diálogo continuo sobre las formas de mejorar la formación docente y fortalecer la profesión docente.Stanford Center for Assessment, Learning and Equity Stanford (SCALE) ofereceu um comentário sobre os manuscritos na primeira parte desta edição especial, que destacou os benefícios do edTPA e a necessidade de tais programas de avaliação para melhorar a formação de professores e fortalecer práticas de ensino. Ao mesmo tempo, os autores responderam ao comentário SCALE. As respostas dos autores levantam preocupações sobre equidade, retidão e as conseqüências involuntárias das avaliações de desempenho dos professores. Essas respostas revelam a necessidade de um diálogo contínuo sobre formas de melhorar a formação de professores e fortalecer a profissão docente