المؤلفون: Bush, Malcolm, Lansing, Jennifer, Zapata-Gietl, Claudia, Thomas, Kathryn, Escobar, Carolina

المصدر: Online Submission. 2018.

تمت مراجعته من قبل الزملاء: N

Page Count: 56

Sponsoring Agency: John D. and Catherine T. MacArthur Foundation

الواصفات: Blended Learning, Electronic Learning, English (Second Language), English Instruction, Program Effectiveness, Spanish Speaking, Native Language, Language Proficiency, Outcomes of Education, Low Income Students, Females, Community Needs, Adult Students, Family Environment, Student Satisfaction, Adult Basic Education, Community Colleges, Community Organizations

مصطلحات جغرافية: Illinois (Chicago)

معرفات التقييم و الدراسة: Test of Adult Basic Education

مستخلص: This article describes process and outcome evaluations of a blended Cyber ESL program for native Spanish speakers in Chicago who could not use regular ESL classes. The outcomes measured against before and after scores and several comparison groups showed large gains in English language proficiency. 58% percent of students from the cohorts which took the appropriately normed English tests advanced at least one grade level and 31% advanced two grade levels in a sixteen-week course. Focus groups with students revealed large satisfaction with the course. The students had a wide-age range of characteristics but the majority were women and from lower-income households. The results showed an advantage for combined online and in-person tutorial approach over just class-room or just online approaches especially for certain students. Forty-one million U.S. residents are native Spanish speakers. An innovative approach to improving their English is a major contribution to their integration into the economic mainstream. [This research was carried out under the auspices of the Center for Urban Research and Learning at Loyola University of Chicago.]

Abstractor: As Provided

المؤلفون: Lansing, Jennifer Lyn.

المصدر: For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations..

مصطلحات موضوعية: Ectomycorrhizal fungi. Mycorrhizal fungi. Mycorrhizas Plant-fungus relationships. Forest ecology Nitrogen fertilizers

الوصف: Thesis (Ph. D.)--University of California, Davis and San Diego State University, 2003.
Includes bibliographical references (leaves 142-144). Also available via the World Wide Web. (Restricted to UC campuses).

الإتاحة: http://uclibs.org/PID/11984Test

المؤلفون: Lu, Tianjun, Lansing, Jennifer, Zhang, Wenwen, Bechle, Matthew J., Hankey, Steven C.

مصطلحات موضوعية: Hazardous air pollutants, Volunteer-based monitoring, Local emissions, Exposure assessment

الوصف: Land Use Regression (LUR) models of Volatile Organic Compounds (VOC) normally focus on land use (e.g., industrial area) or transportation facilities (e.g., roadway); here, we incorporate area sources (e.g., gas stations) from city permitting data and Google Point of Interest (POI) data to compare model performance. We used measurements from 50 community-based sampling locations (2013-2015) in Minneapolis, MN, USA to develop LUR models for 60 VOCs. We used three sets of independent variables: (1) base-case models with land use and transportation variables, (2) models that add area source variables from local business permit data, and (3) models that use Google POI data for area sources. The models with Google POI data performed best; for example, the total VOC (TVOC) model has better goodness-of-fit (adj-R-2: 0.56; Root Mean Square Error [RMSE]: 032 mu g/m(3)) as compared to the permit data model (0.42; 037) and the base-case model (0.26; 0.41). Area source variables were selected in over two thirds of models among the 60 VOCs at small-scale buffer sizes (e.g., 25 m-500 m). Our work suggests that VOC LUR models can be developed using community-based sampling and that models improve by including area sources as measured by business permit and Google POI data. (C) 2019 The Authors. Published by Elsevier B.V. ; U.S. Environmental Protection Agency [R835873]; Minneapolis Health Department ; This publication was developed as part of the Center for Air, Climate, and Energy Solutions (CACES), which was supported under Assistance Agreement No. R835873 awarded by the U.S. Environmental Protection Agency. It has not been formally reviewed by EPA. The views expressed in this document are solely those of authors and do not necessarily reflect those of the Agency. EPA does not endorse any products or commercial services mentioned in this publication. The authors acknowledge Patrick Hanlon for providing the VOC sampling data and funding from Minneapolis Health Department.

وصف الملف: application/pdf

العلاقة: http://hdl.handle.net/10919/93218Test; https://doi.org/10.1016/j.scitotenv.2019.04.285Test; 677

الإتاحة: https://doi.org/10.1016/j.scitotenv.2019.04.285Test
http://hdl.handle.net/10919/93218Test

المؤلفون: Pruetz, Jill D., Brink, Gavin, Cruz Palma, Eduardo, Dobson, Kaelyn, Husic, Diane W., LaDuke, Thomas C., Lansing, Jennifer, Master, Terry, Mesen, Israel

المصدر: Neotropical Primates; Dec2022, Vol. 28 Issue 1/2, p13-18, 6p

المؤلفون: Rosenbaum, James E., Ahearn, Caitlin, Lansing, Jennifer

المصدر: Handbooks of Sociology and Social Research ; Handbook of the Sociology of Education in the 21st Century ; page 431-455 ; ISSN 1389-6903 2542-839X ; ISBN 9783319766928 9783319766942

الإتاحة: https://doi.org/10.1007/978-3-319-76694-2_19Test

المؤلفون: Lansing, Jennifer

المساهمون: Reznick, Bruce A., Berndt, Bruce C., Zaharescu, Alexandru, Stolarsky, Kenneth B.

المصدر: IDEALS

مصطلحات موضوعية: stat, geo

الوصف: In this dissertation, we discuss properties of the Stern sequence, denoted by s(n), and define a related sequence. First, we give a brief historical background and known results. We then discuss the second and third largest values for the Stern sequence, as well as the asymptotics when a value m will first appear in a row in the diatomic array. We also investigate the distribution of values for the Stern sequence, as well as the gaps of the ordered values from a row. After this, we investigate the properties of the related sequence called w(n):=s(3n)/2. We give recurrences for the sequence and find generalized recurrences and a reduction formula. We attempt to find a combinatorial interpretation for w(n), as well as a generating function for the sequence. We also find the largest value of w(n) for a row of its triangular array. We consider sums of w(n) and the average order of magnitude, which is the same average order of the Stern sequence. We also examine the greatest common divisor of consecutive terms, as well as the sequence w(n) modulo 2. Finally, we define a polynomial analogue and investigate some of its properties.

العلاقة: http://hdl.handle.net/2142/49483Test

الإتاحة: http://hdl.handle.net/2142/49483Test

المؤلفون: Anders, Katherine, Dennison, Melissa, Lansing, Jennifer Weber, Reznick, Bruce

المصدر: Annals of Combinatorics ; volume 17, issue 1, page 15-26 ; ISSN 0218-0006 0219-3094

مصطلحات موضوعية: Discrete Mathematics and Combinatorics

الإتاحة: https://doi.org/10.1007/s00026-013-0188-3Test

المؤلفون: Allen, Michael F., Lansing, Jennifer, Allen, Edith B.

المصدر: Progress in Botany ; page 344-367 ; ISSN 0340-4773 ; ISBN 9783642523045 9783642562761

الإتاحة: https://doi.org/10.1007/978-3-642-56276-1_14Test

المؤلفون: Allen, Michael F., Allen, Edith B., Lansing, Jennifer L., Pregitzer, Kurt S., Hendrick, Ron L., Ruess, Roger W., Collins, Scott L.

المصدر: Journal of Arid Environments ; volume 74, issue 10, page 1170-1176 ; ISSN 0140-1963

مصطلحات موضوعية: Earth-Surface Processes, Ecology, Ecology, Evolution, Behavior and Systematics

الإتاحة: https://doi.org/10.1016/j.jaridenv.2010.05.001Test
https://api.elsevier.com/content/article/PII:S0140196310001278?httpAccept=text/xmlTest
https://api.elsevier.com/content/article/PII:S0140196310001278?httpAccept=text/plainTest