4,570 research outputs found
Relationship between water quality, watermilfoil frequency, and weevil distribution in the State of Washington
During the summer of 1997, we surveyed 50 waterbodies
in Washington State to determine the distribution of the
aquatic weevil
Euhrychiopsis lecontei
Dietz. We collected data
on water quality and the frequency of occurrence of watermilfoil
species within selected watermilfoil beds to compare
the waterbodies and determine if they were related to the
distribution
E. lecontei
. We found
E. lecontei
in 14 waterbodies,
most of which were in eastern Washington. Only one lake
with weevils was located in western Washington. Weevils were
associated with both Eurasian (
Myriophyllum spicatum
L.) and
northern watermilfoil (
M. sibiricum
K.). Waterbodies with
E.
lecontei
had significantly higher (
P
< 0.05) pH (8.7
±
0.2)
(mean
±
2SE), specific conductance (0.3
±
0.08 mS cm
-1
) and
total alkalinity (132.4
±
30.8 mg CaCO
3
L
-1
). We also found
that weevil presence was related to surface water temperature
and waterbody location ( = 24.3,
P
â€
0.001) and of all
the models tested, this model provided the best fit (Hosmer-
Lemeshow goodness-of-fit = 4.0,
P
= 0.9). Our results suggest
that in Washington State
E. lecontei
occurs primarily in
eastern Washington in waterbodies with pH
â„
8.2 and specific
conductance
â„
0.2 mS cm
-1
. Furthermore, weevil distribution
appears to be correlated with waterbody location (eastern
versus western Washington) and surface water temperature
Leveraging State Economic Development Resources to Create Job Opportunities for People with Disabilities
A 2009 research brief produced for the NTAR Leadership Center, a consortium led by the John H. Heldrich Center for Workforce Development at Rutgers, The State University of New Jersey. Founded in 2007 under a grant/contract with the Office of Disability Employment Policy at the U.S. Department of Labor, the NTAR Leadership Center's mission is to build capacity and leadership at the federal, state, and local levels to enable change across workforce development and disability-specific systems that will increase employment and economic self-sufficiency for adults with disabilities. This brief examines existing state, regional, and local economic development resource tools and discusses ways in which states and localities can leverage traditional loan and financing programs that enhance job creation, provide access to local employment opportunities, or help support employment for residents, including those with disabilities
A methodology for designing aircraft to low sonic boom constraints
A method for designing conceptual supersonic cruise aircraft to meet low sonic boom requirements is outlined and described. The aircraft design is guided through a systematic evolution from initial three view drawing to a final numerical model description, while the designer using the method controls the integration of low sonic boom, high supersonic aerodynamic efficiency, adequate low speed handling, and reasonable structure and materials technologies. Some experience in preliminary aircraft design and in the use of various analytical and numerical codes is required for integrating the volume and lift requirements throughout the design process
The Restructuring of the Saskatchewan Wheat Pool: Overconfidence and Agency
This paper examines how agency problems combined with overconfidence and hubris by coop management lead to financial failure in the Saskatchewan Wheat Pool. As a consequence of both of these problems, the Pool made poor investment decisions and ended up in severe financial difficulties. These problems were exacerbated by three additional factors: (1) ownership and control were separated via an A-B share structure, leading to a situation where neither farmer members nor investors had an incentive to monitor management activities; (2) the sheer volume of investment activity undertaken made it virtually impossible for the board to stay on top of what was happening; and (3) as a result of the change financial structure, senior management had available a large amount of debt capital that it could spend.Agribusiness, Crop Production/Industries,
Role of a Required Information Literacy Competency Exam in the First College Year
James Madison University has had required information literacy competency exam situated within the first year of Universityâs General Education Program for over a decade. This test, previously the Information Seeking Skills Test (ISST) and now, Madison Research Essentials Skills Test (MREST) is directly mapped to the Association for College & Research Librariesâ (ACRL) Information Literacy Standards for Higher Education. For many years, the only data regularly gathered noted if the students were passing, passing at the advanced level or not, and how the students performed on each objective. With this paper, the author explains how the test data is currently mined to discover more about the MREST and MREST test item behavior, score setting, and student performance comparisons of MREST passers versus non-passers. Each of these elements is further mined to learn more about what our students know, donât know and need to know to successfully navigate a university information landscape
The effect of using test-outs and assigned activities on the vocabulary achievements of sixth grade students
With each new concept or activity developed, a way to express that concept or activity is a must with man. Verbal communication is a peculiar distinction of man. It sets him off from all other life forms on earth. This may account for the excitement felt when a child utters his first word. At that point a child has taken a giant step toward socialization. For those words to become verbal communication, meaning must accompany them. Meaning comes from experiences--experiences in which a child is actively involved whether it be intellectually, emotionally, physically or any combination of the three. This paper will deal with students obtaining meaning primarily through physical/intellectual experiences. The following two questions will be answered. 1. Do students retain words after having had experiences with their meanings? 2. Do the kinds of experience(s) a student has with a word\u27s meaning influence the retention of that meaning
The Autobiography as Language Reflection
Often, preservice teachers need to be reminded of the many influences on children\u27s language. By reflecting on their own past language experiences, perhaps prospective teachers can better examine the important elements for language development
Visible But Blurry Boundaries: Librarians in the Writing Center, Writing Tutors in the Libraries
Learning Communities and the Completion Agenda
Learning communities are widely recognized as a powerful pedagogy that promotes deep learning and student engagement, while also addressing a range of challenges that plague higher education. The Completion Agenda represents a complex set of intersecting priorities advocated by federal and state government, nonprofit organizations, colleges, and universities that shift the national focus from expanding access to degree completion. Policy shifts and emerging educational practices aligned with the Completion Agenda such as dual credit courses, prescriptive degree maps, and the expansion of online general education courses are considered in terms of their impact on the administration of learning community programs. Although subtle adjustments in curricula may be necessary, learning communities remain critically important to preserving the quality of student learning and the integrity of undergraduate curricula in a policy environment that sometimes seems to emphasize efficiencies in degree completion above all else.
Kathy E. Johnson is Dean of University College, Associate Vice Chancellor for Undergraduate Education, and Professor of Psychology at Indiana University-Purdue University Indianapolis (IUPUI)
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