1,809 research outputs found
International Response to Dolly: Will Scientific Freedom Get Sheared
This Comment will discuss the current threat to scientific freedom posed by absolute bans on human cloning. Parts II and III discuss the response of the United States and the international community to Dolly. Part IV discusses the legal position of scientific freedom in the U.S. and abroad. Finally, Part V will posit that a total ban on human cloning infringes on the freedom of scientific inquiry, and endangers the public by encouraging the establishment of black market cloning clinics
Dispersion aerosol indirect effect in turbulent clouds: Laboratory measurements of effective radius
Cloud optical properties are determined not only by the number density nd and mean radius ṝ of cloud droplets but also by the shape of the droplet size distribution. The change in cloud optical depth with changing nd, due to the change in distribution shape, is known as the dispersion effect. Droplet relative dispersion is defined as d=σr / ṝ . For the first time, a commonly used effective radius parameterization is tested in a controlled laboratory environment by creating a turbulent cloud. Stochastic condensation growth suggests d independent of nd for a nonprecipitating cloud, hence nearly zero albedo susceptibility due to the dispersion effect. However, for size‐dependent removal, such as in a laboratory cloud or highly clean atmospheric conditions, stochastic condensation produces a weak dispersion effect. The albedo susceptibility due to turbulence broadening has the same sign as the Twomey effect and augments it by order 10%
A State Policymakers' Guide to Federal Health Reform: Part I: Anticipating How Federal Health Reform Will Affect State Roles
Examines how federal healthcare reform will affect states' tools and roles in connecting people to services, promoting coordination and integration, improving care for those with complex needs, being results-oriented, and increasing efficiencies
Muscle Activity in Single- vs. Double-Leg Squats
International Journal of Exercise Science 7(4) : 302-310, 2014. Muscular activity, vertical displacement and ground reaction forces of back squats (BS), rear-leg elevated split squats (RLESS) and split squats (SS) were examined. Nine resistance-trained men reported for two sessions. The first session consisted of the consent process, practice, and BS 1-repetition maximum testing. In the second session, participants performed the three exercises while EMG, displacment and ground reaction force data (one leg on plate) were collected. EMG data were collected from the gluteus maximus (GMX), biceps femoris (BF), semitendinosus (ST), rectus femoris (RF), vastus lateralis (VL), vastus medialis (VM), tibialis anterior (TA), and medial gastrocnemius (MGas) of the left leg (non-dominant, front leg for unilateral squats). Load for BS was 85% one repetition maximum, and RLESS and SS were performed at 50% of BS load. Repeated measures ANOVA was used to compare all variables for the three exercises, with Bonferroni adjustments for post hoc multiple comparisons, in addition to calculation of standardized mean differences (ES). Muscle activity was similar between exercises except for biceps femoris, which was significantly higher during RLESS than SS during both concentric and eccentric phases (ES = 2.11; p=0.012 and ES= 2.19; p=0.008), and significantly higher during BS than the SS during the concentric phase (ES = 1.78; p=0.029). Vertical displacement was similar between all exercises. Peak vertical force was similar between BS and RLESS and significantly greater during RLESS than SS (ES = 3.03; p=0.001). These findings may be helpful in designing resistance training programs by using RLESS if greater biceps femoris activity is desired
Variation of Sound Velocity in Fatigued Aluminum 2024-T4 as a Function fo Hydrostatic Pressure
It is well known that a pressure or stress derivative measurement of the sound velocity gives information about the nonlinear elastic properties of the material under investigation. Over the last several decades numerous experiments on various solids using uniaxial stress apparatus or oil-filled hydrostatic pressure chambers have been reported. In most cases the pressure or stress must be increased to several thousand kilobars to obtain reasonable measurements. The necessity of using such high pressure usually results from the low sensitivity of the devices or techniques used to measure the change in the sound velocity
Materials Characterization Using Acoustic Nonlinearity Parameters and Harmonic Generation: Effects of Crystalline and Amorphous Structures
The importance of nonlinearity in the description of material behavior is gaining widespread attention. Nonlinearity plays a major, if not dominating, role in a number of material properties. For example, properties that are important in engineering design such as thermal expansion or the pressure dependence of optical refraction are inherently nonlinear [1]. New assembley techniques such as the use of ultrasonic gauges to determine the loading of critical fasteners depend upon nonlinear properties of the fasteners [2]. Areas of considerable fundamental interest in nonlinearity include lattice dynamics [3], radiation stress in solids [4,5], and nonlinear optics [6
National contingency plan for response to an incursion of Melon Fly Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) in Australia
When worlds collide: heterotopias in fantasy fiction for young adult readers in France and Britain
My dissertation examines the alternative worlds in recent fantasy fiction for young adults in Britain and France. I compare J. K. Rowling's Harry Potter series (1997-2007) and Philip Pullman's His Dark Materials (1995-2000) trilogy to two French fantasy series, Erik L'Homme's Le Livre des toiles (The Book of the Stars) (2001-2003) and Pierre Bottero's Ewilan (2003-2007) series. My work contributes to scholarship on French children's literature and reflects some of the ways in which comparative approaches to writing for children and young adults can highlight the differences in literary traditions as new genres, such as that of la fantasy in France, emerge as acceptable modes of literary production. Via the spatiality theories of Michel Foucault, Michel de Certeau and others, I argue that the alternative worlds in these texts constitute training grounds that prepare protagonists and their readers to develop codes of ethical action. Focusing on fantasy allows me to explore and compare two very different traditions of writing for children and adolescents. While the British Golden Age of children's fiction led to works such as Alice in Wonderland, Peter Pan, Winnie-the-Pooh and later to C.S. Lewis's Chronicles of Narnia, a similar shift towards imaginary, fantasy worlds did not occur in France, where writing for children and young adults was grounded in instructional strategy. I argue that in current fantasy narratives, protagonists model resistant and subversive strategies that readers can also use to oppose abuses of power in their own world. What is at stake in these texts is not the traditional binary between light and dark or good and evil. Through the mental and moral growth of their protagonist-heroes, fantasy authors are teaching their readers of all ages to think critically about responding to moral injustices and ethical uncertainties in their own world and in their everyday lives. By imagining these impossible worlds, fantasy provides readers of all ages with the mental practice necessary for becoming capable and mature problem-solvers, who are equipped to face the challenges and problems in their own world with bravery and hope
Transition in Occupations of Refugees During Resettlement
Purpose: In 2016, there were 22.5 million refugees worldwide (UNHCR, 2017). California resettled just over 5,000 of those 85,000 (Igielnik & Krogstad, 2017). Limited research has been conducted in the United States (U.S.) focusing on the refugee experience; furthermore, there is a significant gap in research regarding the impact of the refugee experience on the occupations of refugees as they transition to living in the U.S. Smith (2012) explored the adaptation of cultural weaving among Karen refugees to maintain their previous occupations and the impact of daily weaving on their lives within Western culture; however, the study focused only on work occupations. This study sought to capture the experience of refugees and the impact of their transition on a broad array of occupations. Adding to occupational science literature regarding the occupational impact of the refugee experience, as well as aiding in addressing issues of occupational justice (Townsend, & Wilcock, 2004).
Methods: This research was a qualitative-descriptive, phenomenological study. Data was collected through semi-structured interviews. Questions were guided by Person-Environment-Occupation model (Law, et al., 1996) and Transitions Theory (Blair, 2000), to address personal and cultural values, environments where occupations are performed, and occupational patterns to identify changes in meaningful occupations due to the refugee process. Participants have legal status as refugees, have been in the U.S. between one and five years, resettled in Northern California, are at least 18 years old and were not required to speak English. As this study aimed to capture a broad experience of transition and limit confounding factors influencing how the participant responded to changes in occupations, participants could be of any ethnicity, country of origin, or gender. Two participants were recruited through snowball sampling. Interviews were audio taped and transcribed. Interviews were coded using Thematic Analysis to generate common themes across cases (Braun & Clarke, 2006). Rigor was strengthened through member checks and peer review.
Findings: Through analysis of the interviews, the researchers found five major themes: contextual barriers, internal factors, adaptation, belonging, and transition. The first four themes form a loop and influence each other both positively and negatively and, ultimately, affect engagement in occupations. Transition is the theme that envelops and influences the whole. Using these five themes, the researchers developed the Transition-related Effects on Refugee Occupations (TERO) Model. Key findings include that refugees may experience more meaning and role change/loss in their occupations, rather than adoption of new occupations. Additionally, the researchers found social network to be important for positive occupational engagement throughout country transition.
Implications: As occupational therapists, the tendency towards working with refugee populations may be to focus on their transitions to new occupations. However, data from this study indicates that it may be more pertinent to address role and meaning change/loss in current occupations
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