Snapshot of KIPP Leadership Practices through 2010 -- 2011

As part of the U.S. Department of Education's Investing in Innovation (i3) grant, the Knowledge Is Power Program (KIPP) Foundation commissioned Mathematica to document leadership practices at KIPP schools. This issue brief summarizes notable findings from the study, which focused on identifying leadership practices across diverse areas: leadership structure and transitions, and the selection, development, and evaluation of leaders. Among other notable findings, KIPP combines a tiered sequence of leadership roles at the local level with national staff development programs to generate a pipeline of school leaders. The study also found that KIPP's Leadership Competency Model defines the skills school leaders need and guides development and evaluation

Cover Crops and Corn Residue Removal: Impacts on Soil Hydraulic Properties and Their Relationships with Carbon

Large-scale crop residue removal may negatively affect soil water dynamics. Integrating cover crop (CC) with crop residue management can be a strategy to offset potential adverse effects of residue removal. We studied: (i) the impact of corn (Zea mays L.) residue removal (56%) with and without the use of winter rye (Secale cereale L.) CC on soil hydraulic properties, (ii) whether CC would ameliorate residue removal effects on hydraulic properties, and (iii) relationships of hydraulic properties with soil organic C (SOC) and other properties under irrigated no-till continuous corn on a silt loam in south central Nebraska after 5 and 6 yr of management. Cover crops did not affect soil hydraulic properties. However, residue removal reduced cumulative water infiltration by about 45% in one year. Across years, residue removal reduced plant available water (PAW) by 32% and mean weight diameter of water-stable aggregates (MWD) by 23% for the upper 5-cm soil depth. Under no CC, residue removal reduced SOC concentration by 25% in the 0- to 5-cm and by 11% in the 5- to 10-cm depths. Under residue removal, CC increased SOC concentration by 18% in the 0- to 5-cm and by 8% in the 5 to 10-cm depths. Cover crop did not completely offset the residue removal-induced decrease in SOC concentration in the upper 5-cm depth. Plant available water decreased as SOC concentration and MWD decreased. After 6 yr, corn residue removal adversely affected soil hydraulic properties and SOC concentration, but CC was unable to fully offset such adverse impacts

Did cover crop or animal manure ameliorate corn residue removal effects on soil mechanical properties after 10 years?

Crop residue removal may negatively affect soil mechanical properties, which are key components of soil quality. To evaluate potential long-term effects, we assessed the 10-yr impact of corn (Zea mays L.) residue removal (59 % of non-grain biomass annually) on surface soil mechanical properties (0–20 cm). We also evaluated whether adding carbon (C) amendments, such as using a winter rye (Secale cereale L.) cover crop or surface-applying cattle manure (24 Mg ha− 1 biannually) can ameliorate the effects of crop residue removal. This long-term study was under irrigated no-till continuous corn on a silt loam soil in south-central Nebraska, USA. Measurements included soil penetration resistance, field bulk density, aggregate strength, Atterberg limits (liquid limit, plastic limit, and plasticity index), Proctor maximum bulk density, and the water content at which the Proctor maximum bulk density (critical water content) occurs. Reduction in soil organic carbon (SOC) concentration explained most of the changes in soil mechanical properties. Long-term corn residue removal increased penetration resistance (+40 %) for the 0–20 cm depth, and reduced aggregate strength (− 44 %), plasticity index (− 22 %), and critical water content (− 13 %) in the 0–5 cm depth. Residue removal also reduced field bulk density (− 5%), liquid limit (− 12 %), and plastic limit (− 10 %) in the 0–10 cm depth, but increased Proctor maximum bulk density (+8 %) in the 0–5 cm depth. Winter rye cover crop reduced field bulk density (− 5%, 0–15 cm depth) and increased penetration resistance (+52 %, 0–20 cm depth). Surface-applied manure amendments increased the near-surface soil liquid limit (+8 %) and plastic limit (+8 %) in the 0–5 cm depth. Given the high rate of residue removal used in this experiment, our findings support that excessive corn residue removal over the long-term (~10 years) negatively affects near-surface soil mechanical properties, but that use of winter rye cover crop or surface-applied manure can minimally to partially ameliorate these effect

Work Study Students at VCU: Quality versus Quantity

VCU Libraries’ student full-time equivalents and budget are lower than its peer institutions in the Association of Southeastern Research Libraries, resulting in a significant lack of funding for student workers. The initial project goals were 1) to identify which steps the VCU Libraries could take to resolve this problem and 2) to investigate if this problem were university-wide in scope. Shortly following this determination, the president’s office VCU Update #10 proposed a “substantial increase in funding for student financial aid” and a university-wide survey on work-study was initiated by the VCU Career Center and distributed by the provost to university employers. The team goals were adjusted to 1) investigate the student’s perspective in obtaining work and the employment experience at VCU and 2) query both students and employers on how to improve the hiring process. Using a questionnaire to survey work-study employers along with experienced and prospective work-study students, the team collected both quantitative and qualitative data to be used by the university

Organizing the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST): National Institutes of Health, Health Care Financing Administration, and industry funding

The Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) is a prospective, randomized, multicenter clinical trial of carotid endarterectomy (CEA) versus carotid artery stenting (CAS) as prevention for stroke in patients with symptomatic stenosis greater than or equal to 50%. CREST is sponsored by the US National Institute of Neurological Disorders and Stroke (NINDS) of the US National Institutes of Health (NIH), with additional support by a device manufacturer, and will provide data to the US Food and Drug Administration (FDA) for evaluation of a stent device. Because of budget constraints for CREST, Health Care Financing Administration (HCFA) reimbursement for hospital costs incurred by CREST patients will be essential. The involvement of academic scientists, industry, and three separate government agencies (NIH, FDA, HCFA) has presented many challenges in conducting the trial. A review of the pathways followed to meet these challenges may be helpful to others seeking to facilitate sharing of the costs and burdens of conducting innovative clinical research

The Iowa Homemaker vol.15, no.5

She’s Been a Campus Personality By Prof. Blair Converse No Race Prejudice in Barbados By Rosemae Johnson Ideas Centuries Old By Sally Tragedy in One Act By Isabella Palmer Journalists Like Their Fun By Virginia Berry Watch the Cyclone Ends By Winn Heyer “We Thought it Would be That Easy” By Bess Ferguson Lastest Fashions for a Fall Breakfast by Katherine Hoffma