The School Bell Has a Different Ring

The ultimate goal of education is intelligent self-direction in solving problems in a rapidly changing world. Homemaking is being presented in a new way to the high school classes today. Experiments designed to discover ways of teaching everyday social relationships are being conducted in the Core Curriculum project in the Theodore Roosevelt High School in Des Moines, the homemaking program in the Story City High School, and on a smaller scale in the Personal Problems class in the Ames High School

Room for Improvement

If Mother is shaking her head over the worn spot on the carpet and wondering what to do about Dad\u27s easy chair, (it was ready for the attic years ago and he won\u27t give it up) she\u27ll be waiting for you to come home spring vacation all steamed up with some new ideas. Don\u27t disappoint her, for there are any number of things that you can do to regenerate comfort, beauty, simplicity and hospitality into a worse for wear living room or house

Assessing the Cell Phone Challenge to Survey Research in 2010

Updates an analysis of the complexity of including cell phone samples in surveys and issues of non-coverage bias. Examines weighted estimates from landline, cell, and combined samples; demographic and other characteristics of each group; and implications

Emil Zuckerkandl, M.D. (1849-1910): Bridging Anatomic Study and the Operating Room Table.

In the mid-19th century, the Vienna School of Anatomy was at the epicenter of the rapidly growing field of anatomy. One of the school’s most distinguished professors, Hungarian-born anatomist Emil Zuckerkandl was instrumental in transforming anatomy from a descriptive science to one of practical and clinical value. A prolific researcher interested in nearly all areas of morphology and most famously, the chromaffin system, Zuckerkandl’s discoveries from more than a century ago still provide a foundation for surgeons to this day

Looking back to look forward: 5G/COVID-19 conspiracies and the long history of infrastructural fears

Almost as soon as the COVID-19 pandemic began spreading throughout much of the world, conspiracies arose that blamed the virus on the deployment of fifth-generation cellular networks (5G) infrastructure. These conspiracies had significant consequences, including protests against 5G and the destruction of 5G infrastructure. This article uses a media genealogy approach to place the 5G/COVID-19 conspiracies within the long and recurring cycle of conspiracies focused on mobile infrastructure. Placed within that broader history, this article argues that the 5G/COVID-19 conspiracies should have been unsurprising, and these types of infrastructural conspiracies should be a more significant part of mobile media and communication (MMC) research because infrastructures are an often invisible, yet crucial, part of the mobile practices studied within MMC research. The article concludes by theorizing about why mobile infrastructures are such a frequent target for conspiracy theories and argues that researchers should begin planning now for combatting the conspiracies that will almost inevitably arise when the next generation of mobile infrastructure gets linked to fears about public health

Energy expenditure of interruptions to sedentary behavior

<p>Abstract</p> <p>Background</p> <p>Advances in technology, social influences and environmental attributes have resulted in substan-tial portions of the day spent in sedentary pursuits. Sedentary behavior may be a cause of many chronic diseases including obesity, insulin resistance, type 2 diabetes and the metabolic syndrome. Research demonstrated that breaking up sedentary time was beneficially associated with markers of body composition, cardiovascular health and type 2 diabetes. Therefore, the purpose of this study was to quantify the total energy expenditure of three different durations of physical activity within a 30-minute sedentary period and to examine the potential benefits of interrupting sedentary behavior with physical activity for weight control.</p> <p>Methods</p> <p>Participants completed four consecutive 30-minute bouts of sedentary behavior (reading, working on the computer, or doing other desk activities) with and without interruptions of walking at a self-selected pace. Bout one contained no walking interruptions. Bout two contained a 1-minute walking period. Bout three contained a 2-minute walking period. Bout four contained a 5-minute walking period. Body composition and resting metabolic rate were assessed.</p> <p>Result</p> <p>Twenty males and females (18-39 years) completed this study. Results of the repeated measures analysis of variance with post-hoc testing showed that significantly more energy was expended during each 30 minute sedentary bout with a walking break than in the 30 minute sedentary bout (<it>p </it>< 0.05 for all comparisons). On average, participants expended an additional 3.0, 7.4, and 16.5 additional net or activity kilocalories during bouts 2, 3, and 4, respectively compared with bout 1. When extrapolated for a full eight-hour working day, this data shows that an individual would theoretically expend an additional 24, 59 or 132 kilocalories per day, if they stood up and walked at a normal, self selected pace for one, two or five minutes every hour, respectively, compared with sitting for the 8-hour period.</p> <p>Conclusions</p> <p>This study demonstrated that making small changes, such as taking a five minute walking break every hour could yield beneficial weight control or weight loss results. Therefore, taking breaks from sedentary time is a potential outlet to prevent obesity and the rise of obesity in developed countries.</p

Can the Adaptive Multi-Paddock Grazing System Increase Carbon Sequestration in Alberta's Grassland Soils?

Natural grasslands cover around 40% of the Earth’s surface and play an important role as a source of ecological goods and services. By sequestering around 30% of terrestrial global carbon, grasslands play a critical part in the alleviation of climate change. Despite their ecological significance, grasslands have been reduced to a fraction of their original extent. In Canada, up to 70% of grasslands have been destroyed, making it the most endangered ecosystem in North America. What remains is often intensely grazed and a diverse ecosystem of wild animals is replaced by domestic livestock. The continuous application of poor grazing management by ranchers is one of the main causes for the depletion of natural grasslands, resulting in the release of stored soil carbon back into the atmosphere. Fortunately, 60-70% of the depleted carbon can be re-sequestered through the adoption of improved grazing management, thus improving grassland ecosystems. The Adaptive Multi-Paddock (AMP) grazing system is an example of improved grazing management. AMP grazing is a system in which livestock is frequently rotated between multiple fenced paddocks. Compared to conventional grazing practices (Non-AMP), the AMP system is a favorable solution which can improve carbon sequestration in world wide grasslands soils– and in turn, contribute to the mitigation of climate change. By regenerating grassland ecosystems, AMP grazing could potentially aid in creating a more sustainable, resilient agroecosystem. Our goal is to study the effect of AMP grazing on soil organic carbon (SOC) sequestration in Canadian grasslands. First, we collected soil cores from 30 study sites located throughout the grassland ecoregions in Canada. Each site consisted of a pair of ranches: one AMP and one Non-AMP. Second, we analyzed the soil cores for total carbon using an elemental analyzer. There does not seem to be any substantial difference in total carbon between AMP and Non-AMP systems, however we have yet to differentiate between soil organic carbon and soil inorganic carbon. Once we distinguish the two variables we will be able to confirm the effectiveness of the AMP grazing system in increasing carbon sequestration in Canadian grasslands. Literature Cited: Derner, J. D., &amp; Schuman, G. E. (2007). Carbon sequestration and rangelands: a synthesis of land management and precipitation effects. Journal of soil and water conservation, 62(2), 77-85. Gauthier, D. A., &amp; Wiken, E. B. (2003). Monitoring the conservation of grassland habitats, Prairie Ecozone, Canada. Environmental Monitoring and Assessment, 88(1-3), 343-364. Samson, F., &amp; Knopf, F. (1994). Roundtable: prairie conservation in North America. BioScience, 44(6), 418-421 Kraus, D. (2016). Why Canada’s Prairies are the World’s Most Endangered Ecosystem. Retrieved from: http://www.natureconservancy.ca/en/blog/archive/grasslands-the-most.html#.XUnsE-hKi70 Lal, R. (2002). Soil carbon dynamics in cropland and rangeland. Environmental pollution, 116(3), 353-362 Teague, W. R. (2018). Forages and pastures symposium: Cover crops in livestock production: Whole-system approach: Managing grazing to restore soil health and farm livelihoods. Journal of animal science, 96(4), 1519-1530