4,175 research outputs found

    Exploration of the Perceptions and Attitudes of School District Administrators Regarding Instructional Coaching in Central New York State Urban/Suburban Public School Districts

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    The purpose of this study was to gather perceptions and attitudes from school district administrators regarding an instructional coach’s role, the components that influence the utilization of instructional coaches, and the specialized professional development for instructional coaches. Exploratory-descriptive qualitative research sought to identify the critical components necessary for comprehensive implementation of instructional coaching. The study utilized semi-structured interviews with seven tenured urban and suburban Central New York State (NYS) school district administrators in positions such as assistant superintendents, directors, or supervisors of professional development or curriculum, instruction, and assessment. Four themes emerged from the data. The themes related to the implementation of instructional coaching were (a) job depiction, (b) capacity building, (c) interactions, and (d) organizational structure. The themes found aligned with Taylor’s (1911) scientific management theory principles for improving employee productivity. The critical components identified included (a) identifying clear roles and responsibilities for the instructional coach, (b) hiring the right people, (c) ongoing training, (d) building strong trusting relationships, and (e) having an organizational structure. The recommendations for improving the implementation of instructional coaching among the school districts included (a) a standardized set of selection criteria, (b) a clear job description for instructional coaches, (c) a standard training program, and (d) a standard evaluation tool to support the development of the instructional coach. In addition, the results of this study recommend a need for policy development in creating a certification and tracking system for instructional coaches to aid in the determination of the effectiveness of the school improvement strategy

    Idealization of intimate partner violence in romantic relationships: examining the role of television's influence on endorsement of controlling behaviors

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    Media messages of romantic relationships are prevalent, and these messages can influence how individuals behave in their romantic relationships, as well as influencing scripts and schemas about specific relationship behaviors. Young adults are particularly susceptible to media messages, especially when they are actively seeking messages to learn information about romantic relationships (Bachen and Illouz, 1996). Intimate partner violence (IPV) behaviors are ones that young adults are exposed to in media, even in popular television shows and films. IPV occurs in roughly 20-33 percent of college student dating relationships (e.g., Smith et al, 2005) and is a major public health concern (O'Leary et al., 2008; Zurbriggen, 2009). In the current study, participants were exposed to one of five conditions in a 2 x 2 experiment with a control condition, where relationship behavior (e.g., autonomy-promoting or controlling IPV) and framing of the behavior (e.g., idealized or condemned) were manipulated in clips from popular television programs. Participants then reported on their identification with one of the main characters, self-efficacy of performing both relationship behaviors, third person perceptions, and finally endorsement of both relationship behaviors, in addition to demographic items. The results demonstrated that young adults who viewed the controlling IPV behaviors, especially when those behaviors were condemned by the main female character, were more likely to endorse autonomy-promoting behaviors in relationships. Results also demonstrated that the more individuals consumed media, the more they believed others were more affected by media messages (e.g., third person perception) and this led to greater endorsement of autonomy-promoting behaviors. The main findings and implications are discussed, as well as future directions for both scholars and practitioners.Includes bibliographical references

    Molecular characterization and analysis of the acrB gene of Aspergillus nidulans: A gene identified by genetic interaction as a component of the regulatory network that includes the CreB deubiquitination enzyme

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    Copyright © 2003 by the Genetics Society of AmericaMutations in the acrB gene, which were originally selected through their resistance to acriflavine, also result in reduced growth on a range of sole carbon sources, including fructose, cellobiose, raffinose, and starch, and reduced utilization of ω-amino acids, including GABA and ß-alanine, as sole carbon and nitrogen sources. The acrB2 mutation suppresses the phenotypic effects of mutations in the creB gene that encodes a regulatory deubiquitinating enzyme, and in the creC gene that encodes a WD40-repeat-containing protein. Thus AcrB interacts with a regulatory network controlling carbon source utilization that involves ubiquitination and deubiquitination. The acrB gene was cloned and physically analyzed, and it encodes a novel protein that contains three putative transmembrane domains and a coiled-coil region. AcrB may play a role in the ubiquitination aspect of this regulatory network.Natasha A. Boase, Robin A. Lockington, Julian R. J. Adams, Louise Rodbourn and Joan M. Kell

    Training Deer to Avoid Sites Through Negative Reinforcement

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    Deer frequently visit areas where they may cause damage. Incidents along roadways and runways inflict numerous injuries to animals and humans, and cause considerable economic losses. Concerns are increasing that deer interactions with domestic animals may contribute to spread of disease. Deer foraging in residential areas, agricultural fields, or plant propagation sites can impede growth and possibly survival of desirable plants. We conducted a series of trials to determine whether mild electric shock would induce place avoidance in deer. Shock was delivered through a device attached to a collar. A noise cue was emitted as an animal approached a defined area if the animal failed to retreat a shock followed. Deer learned to avoid areas associated with shock. We concluded that place avoidance induced through negative reinforcement may be a feasible means to protect valuable resources from resident animals. However, the technological limitations of tested devices, costs to implement, and required training for individual deer reduced the practicality of this approach for highly mobile animals and as a means to protect resources with low economic significance

    Interviewer: 'Are women and girls ever responsible for the domestic violence they encounter?' Student: 'No, well, unless they did something really, really bad 
'

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    Research shows the ‘gendered nature’ of domestic violence, with Women’s Aid (a UK-based charity) estimating that 1 in 4 women are affected (2014). This paper reports on a project - funded by Comic Relief, completed by Nottinghamshire Domestic Violence Forum (now known as Equation) and evaluated by Nottingham Trent University. The project adopts a Whole School Approach in seeking to prevent domestic violence. Students at three secondary schools attended between one and five blocks of work, and special events. There is evidence of positive developments - with young people showing understanding of domestic violence as well as the margins between healthy and unhealthy relationships. However, not all students could reply ‘never’ to the question of ‘are women and girls to blame for the domestic violence they experience?’, remarking that if the woman had done something ‘really, really bad’ then violence might be justified. We argue that young people’s uncertainties need to be situated within the gender-unequal socio-contexts of contemporary society, and further call for a WSA to domestic violence prevention to be a compulsory part of the UK national curriculum

    Heterologous Production of an Energy-Conserving Carbon Monoxide Dehydrogenase Complex in the Hyperthermophile Pyrococcus furiosus

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    Carbon monoxide (CO) is an important intermediate in anaerobic carbon fixation pathways in acetogenesis and methanogenesis. In addition, some anaerobes can utilize CO as an energy source. In the hyperthermophilic archaeon Thermococcus onnurineus, which grows optimally at 80°C, CO oxidation and energy conservation is accomplished by a respiratory complex encoded by a 16-gene cluster containing a carbon monoxide dehydrogenase, a membrane-bound [NiFe]-hydrogenase and a Na+/H+ antiporter module. This complex oxidizes CO, evolves CO2 and H2, and generates a Na+ motive force that is used to conserve energy by a Na+-dependent ATP synthase. Herein we used a bacterial artificial chromosome to insert the 13.2 kb gene cluster encoding the CO-oxidizing respiratory complex of T. onnurineus into the genome of the heterotrophic archaeon, Pyrococcus furiosus, which grows optimally at 100°C. P. furiosus is normally unable to utilize CO, however, the recombinant strain readily oxidized CO and generated H2 at 80°C. Moreover, CO also served as an energy source and allowed the P. furiosus strain to grow with a limiting concentration of sugar or with peptides as the carbon source. Moreover, CO oxidation by P. furiosus was also coupled to the re-utilization, presumably for biosynthesis, of acetate generated by fermentation. The functional transfer of CO utilization between Thermococcus and Pyrococcus species demonstrated herein is representative of the horizontal gene transfer of an environmentally-relevant metabolic capability. The transfer of CO utilizing, hydrogen-producing genetic modules also has applications for biohydrogen production and a CO-based industrial platform for various thermophilic organisms

    Mechanics of lipid bilayer junctions affecting the size of a connecting lipid nanotube

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    In this study we report a physical analysis of the membrane mechanics affecting the size of the highly curved region of a lipid nanotube (LNT) that is either connected between a lipid bilayer vesicle and the tip of a glass microinjection pipette (tube-only) or between a lipid bilayer vesicle and a vesicle that is attached to the tip of a glass microinjection pipette (two-vesicle). For the tube-only configuration (TOC), a micropipette is used to pull a LNT into the interior of a surface-immobilized vesicle, where the length of the tube L is determined by the distance of the micropipette to the vesicle wall. For the two-vesicle configuration (TVC), a small vesicle is inflated at the tip of the micropipette tip and the length of the tube L is in this case determined by the distance between the two interconnected vesicles. An electrochemical method monitoring diffusion of electroactive molecules through the nanotube has been used to determine the radius of the nanotube R as a function of nanotube length L for the two configurations. The data show that the LNT connected in the TVC constricts to a smaller radius in comparison to the tube-only mode and that tube radius shrinks at shorter tube lengths. To explain these electrochemical data, we developed a theoretical model taking into account the free energy of the membrane regions of the vesicles, the LNT and the high curvature junctions. In particular, this model allows us to estimate the surface tension coefficients from R(L) measurements

    Effect of Pre-breeding Weight and MGA Supplementation on Heifer Performance

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    Developing heifers to reach a target weight of 50% of mature body weight at the beginning of the breeding season is an effective method for reducing heifer development cost. Net costs to produce a bred yearling heifer and 2-year-old cow were lower when heifers were developed to 50% rather than 55% of mature body weight, regardless of breeding season length. Administration of oral progestin to heifers developed to 50% mature body weight prior to breeding did not affect reproductive performance during the first breeding season when heifers were exposed to bulls 13 days after the end of progestin treatment

    Mutual optical injection in coupled DBR laser pairs

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    We report an experimental study of nonlinear effects, characteristic of mutual optical coupling, in an ultra-short coupling regime observed in a distributed Bragg reflector laser pair fabricated on the same chip. Optical feedback is amplified via a double pass through a common onchip optical amplifier, which introduces further nonlinear phenomena. Optical coupling has been introduced via back reflection from a cleaveended fibre. The coupling may be varied in strength by varying the distance of the fibre from the output of the chip, without significantly affecting the coupling time. © 2008 Optical. Society of America
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