174 research outputs found
Mexican American English in Context: Accommodation to Other Available Norms in Lower Michigan
Recent studies have examined the effects of regional varieties on the English ofMexican Americans outside the Southwest (Hartford 1978; Frazer 1996; Gordon2000; Wolfram, Carter, and Moriello 2004; Roeder 2006). The present study is an examination of the vowel systems of Mexican Americans in two communities in Lower Michigan - the Lansing area, where the Northern Cities Shift (NCS) is afeature of the predominant local dialect, and Berrien County in southwest Michigan,which has not shown extensive NCS influence. The findings reveal a kiteshapedpattern in the lower vowels of the Lansing speakers, which is attributableto a new variety of Mexican American English influenced strongly by tbe NCS.The degree of accommodation to this pattern by Mexican Americans in BerrienCounty - where the Mexican American community is less well established - correlates with their length of residence in the area
Effect of Five Different Rest Periods on Tiller Regrowth of Ryegrass
Five rest periods were imposed from April to May on a mixed pasture of two ryegrass (Lolium multiflorum Lam.) varieties and white clover (Trifolium repens L.). The rest period starting dates were: April 4, April 18, May 2, May 16, and May 30, for rest periods 1, 2, 3, 4, and 5, respectively. The total area allocated to the experiment was 1.1 ha, which was divided into 22 pastures. The experimental design used was a split-plot. Rest period was assigned to the main plot, grass to the subplot and legume to the subsubplot. The pastures were “mob-grazed” by cattle from 1 to 4 days to a prescribed residue level. The number of tillers per 0.25 m2 decreased linearly with advanced rest periods, at rates of approximately 40 tillers/0.25 m2/week. The percentage of tillers with seed heads increased linearly with advanced rest periods. The percentage of tillers with ripe seeds increased with later rest periods and reached 98% by rest period 5. The decrease in length of seed head probably was responsible for the decrease in seed weight/tiller. However, estimates indicated that because of the increase in percentage of tillers with ripe seeds with later rest periods about 100, 83, and 103 kg/ha of ripe seeds were produced in rest period 3, 4, and 5, respectively. This amount of seed produced is more than enough for a self-reestablishment of the pasture for the following winter
The Long Road to Developing Native Herbaceous Summer Forage Legume Ecotypes
Only a handful of well-adapted herbaceous summer forage legumes are currently marketed for drier regions of North America and even fewer are true natives. There is a growing demand for native germplasm in the region as a new generation of landowner attempts to return grasslands to a semblance of their original species and diversity. The objective of this paper is to describe preliminary research results of a grasslands team collecting, studying and promulgating native leguminous germplasm in Texas
Incorporating effective e-learning principles to improve student engagement in middle-school mathematics
Becoming Better Versed: Towards Design of Popular Music-based Rhyming Game for Disadvantaged Youths
This study examines patterns of rhyme identification among English Language
Learners (ELLs) towards the development of an educational game, JOLLY, intended to
improve phonemic awareness among school-aged children in the Philippines. Leveraging
on students’ intrinsic interest in Western popular music, we ask students to identify rhyming
words from among the song lyrics. We find that the extent to which an English phoneme is
similar to a Tagalog phoneme determines how likely it is to be identified. From these
findings, we draw implications on how JOLLY’s underlying domain model can be
structured with each song as a learning object and each learning object consisting of an
inventory of phonemes to be mastered. We also recommend the use of open, possibly social,
student models to help learners track their progress and that of their peers
Predicting Math Success in an Online Tutoring System Using Language Data and Click-Stream Variables: A Longitudinal Analysis
Previous studies have demonstrated strong links between students\u27 linguistic knowledge, their affective language patterns and their success in math. Other studies have shown that demographic and click-stream variables in online learning environments are important predictors of math success. This study builds on this research in two ways. First, it combines linguistics and click-stream variables along with demographic information to increase prediction rates for math success. Second, it examines how random variance, as found in repeated participant data, can explain math success beyond linguistic, demographic, and click-stream variables. The findings indicate that linguistic, demographic, and click-stream factors explained about 14% of the variance in math scores. These variables mixed with random factors explained about 44% of the variance
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