Creating the Air of Christmas

The Yuletide spirit comes alive every year when pines are decked with lights and·ornaments, boughs of evergreen are hung on front . doors, and bright red candles illuminate the Creche on mantle pieces. As expressed by Miss Emelda Kunau, assistant professor of applied art, It is getting ready for the holiday that sets the proper mood

Triad in Education

Iowa State\u27s Home Economics Education majors are being prepared to teach adults, as well as junior and senior high school students. They are learning the ways of adult-students by actually conducting adult classes on subjects geared to the homemaker

Tested Recipe for Teaching

Dr. \Vilma Brewer, new head of the Food and Nutrition Department, has developed a basic recipe to promote favorable instructor-student communication. It consists of a mutual understanding, aids for the presentation of knowledge, and the spice of the instructor\u27s personality

Merry Christ:mas..!

I wish I could make clever Christmas cards to send to people, wistfully yearned Mary. How on earth does Jane do it

The Achievement Gap Dilemma/Talking With Children Matters

Talking With Children Matters A purpose of this paper was to review research literature on the Hart and Risley (1995) study and consider if similar research supports the conclusion of the original study. An example of support for the study is “Providence Talks,” a 2013 project to teach poor parents how to speak to their children utilizing an electronic device to count words. This project was made possible by a 2013 award from Bloomberg Philanthropies Mayor’s Challenge. An additional example is the Clinton Foundation’s “Too Small to Fail Initiative” (2014) which hosted the White House Word Gap Event in 2014 (Sperry, Sperry, & Miller, 2018). Support is also indicated in a 2006 study by Hoff which found that differences in word exposure partially or fully explain the SES gap in language skills. While Hart and Risley (1995) have support for their quantity of word theory, research indicates there are various aspects related to greater language development beyond quantity of words. The question of word quantity may be more critical at specific years of growth. For example, the quantity and quality of words a parent uses matter differently the first 3 years of life. Quantity of input is more important in the second year, while quality is more important in the third year (Rowe, 2012). Research considering the validity of Hart and Risley (1995) findings is addressed in this paper. Further, this paper also reviews recent research as it relates to the total picture of language development, including the critical role parents play in that task, what happens to the child\u27s brain during growth, and the role of neuroscience in child development. The Achievement Gap Dilemma This paper addresses legitimate intervention programs that are utilized, their goals, and the extent of their success. Further, it examines what requirements are essential for a successful quality early childhood education program

Zellen als lebende Materialien: Kraftspektroskopische Untersuchung der Mechanotransduktion

Mechanotransduction describes a cellular mechanism of sensing and converting mechanical cues into biochemical signals to regulate cell processes, such as adhesion, migration, proliferation and/or apoptosis. Thus, becoming an ever-growing field of research with high potential for medical applications. I present a new strategy towards reliable microindentation measurements, which is essential for investigating mechanotransduction using soft substrates. I show a precise, reproducible determination of Young’s moduli through an automatic analysis of indentation data. The algorithm presented detects Young’s moduli in a region without dependence on indentation depth while minimizing the fitting error. This strategy is a step towards a comprehensive study of soft materials on a spatial scale similar to cell interactions. It has broad applicability ranging from fundamental research to developing innovative implants that match the in vivo situation. Also, I present novel approaches for multifaceted cellular manipulation. I show that layer thickness of a soft material fixed to a stiff underlying substrate can be crucial for cell adhesion. These findings are pioneer for new implant designs and advanced application fields. I present two atomic force microscopy-based manipulation systems that allow applying specific mechanical stimuli to single cells and a subsequent correlation to whole cell detachment and single bond strengths. The unique AFM-based shear system presented combines application of shear stimuli and cell detachment measurements, whereas the AFM-based modulation system combines oscillatory pushing and pulling with cell detachment measurements. Both shear and oscillatory forces are essential in our body. Thus, the strategies presented in this thesis are of significant medical interest allowing an overarching study of mechanotransduction and may pave the way towards smart stimulation devices that allow cell adhesion on demand

Fish species of greatest conservation need in wadeable Iowa streams: status, habitat associations, and effectiveness of species distribution models

Effective conservation of fish species of greatest conservation need (SGCN) requires an understanding of species-habitat relationships and distributional trends. Thus, modeling the distribution of fish species may serve as a potentially valuable tool for conservation planning. Our goals were to evaluate the status of fish SGCN in wadeable Iowa streams, test the effectiveness of existing species distribution models, and identify the relative influence and importance of habitat variables measured at multiple spatial scales on fish SGCN occurrences. Fish assemblage and habitat data were collected from 86 wadeable stream segments in the Mississippi River drainage of Iowa during 2009 and 2010. The frequency of occurrence of ten fish SGCN in stream segments where they were historically documented varied from 0.0% to 100.0% with a mean of 53.0% suggesting the status of Iowa fish SGCN is highly variable. The accuracy of existing species distribution models was evaluated with Cohen\u27s kappa values and other model performance measures calculated by comparing field collected presence-absence data to model predicted presences and absences for twelve fish SGCN. Kappa values varied from 0.00 to 0.50 with a mean of 0.15, and indicated that only three models predicted species occurrence more accurately than would be expected by chance. Poor model performance likely reflects the difficulties associated with modeling the distribution of rare species and the inability of large-scale explanatory variables to explain variation in species occurrences. Thus, we developed occurrence models for seven fish SGCN using large-scale habitat variables (e.g., stream order, elevation, gradient), small-scale habitat variables (e.g., depth, velocity, coarse substrate), and habitat variables measured at multiple scales to identify the most influential spatial scale on species occurrences. On average, correct classification rates and Cohen\u27s kappa values were greatest for multiple-scale models, intermediate for small-scale models, and lowest for large-scale models. However, large-scale models predicted the occurrences of two species with greater accuracy than small-scale models. Our results highlight the need for long-term monitoring efforts to better understand distributional trends and habitat associations of fish SGCN, and the necessity of understanding the factors that constrain the distribution of fishes across spatial scales to ensure that management decisions and actions occur at the appropriate scale

Golfers and Golf Courses

Golf continues to be a popular recreational activity. National Golf Foundation statistics (Table 1) provide a glimpse of this popularity. According to these numbers, 24.5 million persons (11.6 percent of the U.S. population age 12 and above) played golf in the U.S. in 1993. This represents a 1.2 percent decline since the number of U.S. golfers peaked in 1990 at 27.8 million. After falling to 24.8 million in 1991, the U.S. golf population has remained relatively steady. Nebraska Population, 1990-2010 Alternative Scenarios Methodolog

Granular dynamics in compaction and stress relaxation

Elastic and dissipative properties of granular assemblies under uniaxial compression are studied both experimentally and by numerical simulations. Following a novel compaction procedure at varying oscillatory pressures, the stress response to a step-strain reveals an exponential relaxation followed by a slow logarithmic decay. Simulations indicate that the latter arises from the coupling between damping and collective grain motion predominantly through sliding. We characterize an analogous "glass transition" for packed grains, below which the system shows aging in time-dependent sliding correlation functions.Comment: 5 pages, 5 figure