Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Colby College (11)
- DePaul University (11)
- Prairie View A&M University (7)
- The University of Maine (7)
- Tuskegee University (6)
-
- Arcadia University (3)
- Butler University (2)
- Claremont Colleges (2)
- Illinois Wesleyan University (2)
- Kansas State University Libraries (2)
- University of Northern Iowa (2)
- University of South Carolina (2)
- Western Washington University (2)
- Clemson University (1)
- Duke Law (1)
- Old Dominion University (1)
- South Dakota State University (1)
- The University of Southern Mississippi (1)
- University of Arkansas, Fayetteville (1)
- University of Kentucky (1)
- University of Massachusetts Boston (1)
- University of Wisconsin Milwaukee (1)
- Keyword
-
- Agriculture (3)
- Honors (3)
- Undergraduate (3)
- Art (2)
- Carbon Dioxide (2)
-
- Climate change (2)
- Complete Issue (2)
- Conservation (2)
- DePaul College of Science and Health (2)
- Environment (2)
- Health Care (2)
- Hopf bifurcation (2)
- PH (2)
- Water quality (2)
- ALMANAC (1)
- APEX (1)
- African Americans (1)
- Air pollution (1)
- Alternative Energy (1)
- Amastigotes (1)
- Aroma (1)
- Art museums (1)
- Barbara ouellette (1)
- Bernard lown (1)
- Betsy leitch (1)
- Biofuel (1)
- Bjur (1)
- Blood (1)
- Blood cells (1)
- Blood transfusion (1)
- Publication
-
- Journal of Environmental and Resource Economics at Colby (11)
- DePaul Discoveries (9)
- Applications and Applied Mathematics: An International Journal (AAM) (7)
- Professional Agricultural Workers Journal (6)
- The Catch (5)
-
- The Compass (3)
- Butler Journal of Undergraduate Research (2)
- CrissCross (2)
- Journal of the Iowa Academy of Science: JIAS (2)
- Journal of the South Carolina Academy of Science (2)
- Kansas Agricultural Experiment Station Research Reports (2)
- Occam's Razor (2)
- Scientia (2)
- The STEAM Journal (2)
- Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences (1)
- Duke Law & Technology Review (1)
- Gulf and Caribbean Research (1)
- International Journal of Geospatial and Environmental Research (1)
- Kaleidoscope (1)
- Maine History (1)
- Minerva (1)
- New England Journal of Public Policy (1)
- The Journal of Undergraduate Research (1)
- Tigra scientifica (1)
- Virginia Journal of Science (1)
Articles 1 - 30 of 68
Full-Text Articles in Physical Sciences and Mathematics
Minerva 2015, The Honors College
Minerva 2015, The Honors College
Minerva
This issue of Minerva includes an interview with Honors alumnus and Nobel Peace Prize winner, Bernard Lown; a celebration of retiring Assistant Dean, Barbara Ouellette; and memorial articles celebrating the lives of notable Honors supporters, Betsy Leitch and Dennis Rezendes. Other highlights include a spread on Honors student travel and community engagement; and an article on Honors graduate, Jill Pelto, whose artwork graces the front and back covers of the 2015 Minerva.
Dynamics Of An Sir Model With Nonlinear Incidence And Treatment Rate, Balram Dubey, Preeti Dubey, Uma S. Dubey
Dynamics Of An Sir Model With Nonlinear Incidence And Treatment Rate, Balram Dubey, Preeti Dubey, Uma S. Dubey
Applications and Applied Mathematics: An International Journal (AAM)
In this paper, global dynamics of an SIR model are investigated in which the incidence rate is being considered as Beddington-DeAngelis type and the treatment rate as Holling type II (saturated). Analytical study of the model shows that the model has two equilibrium points (diseasefree equilibrium (DFE) and endemic equilibrium (EE)). The disease-free equilibrium (DFE) is locally asymptotically stable when reproduction number is less than one. Some conditions on the model parameters are obtained to show the existence as well as nonexistence of limit cycle. Some sufficient conditions for global stability of the endemic equilibrium using Lyapunov function are obtained. …
Climate. A Period Of Consequence: Environmental Literature Of 2006 (2006), Shaun O’Connell
Climate. A Period Of Consequence: Environmental Literature Of 2006 (2006), Shaun O’Connell
New England Journal of Public Policy
The author talks about the consequences of not respecting the climate and understanding global warming will cause ecocide and our own extinction.
Reprinted from New England Journal of Public Policy 21, no. 2 (2007), article 5.
Forest Diversity And Disturbance: Changing Influences And The Future Of Virginia’S Forests, Christine J. Small, James L. Chamberlain
Forest Diversity And Disturbance: Changing Influences And The Future Of Virginia’S Forests, Christine J. Small, James L. Chamberlain
Virginia Journal of Science
The Virginia landscape supports a remarkable diversity of forests, from maritime dune woodlands, swamp forests, and pine savannas of the Atlantic Coastal Plain, to post-agricultural pine-hardwood forests of the Piedmont, to mixed oak, mesophytic, northern hardwood, and high elevation spruce-fir forests across three mountain provinces in western parts of the state. Virginia’s forests also have been profoundly shaped by disturbance. Chestnut blight, hemlock woolly adelgid, emerald ash borer, and other pests have caused declines or functional extirpation of foundation species. Invasive plants like multiflora rose, Oriental bittersweet, and Japanese stiltgrass threaten both disturbed and intact forests. Oaks and other fire-dependent …
Assessing The Impacts Of Inorganic And Organic Fertilizer On Crop Performance Under A Microirrigation-Plastic Mulch Regime, Niyi S. Omidire, Raymon Shange, Victor Khan, Russell Bean, Jewel Bean
Assessing The Impacts Of Inorganic And Organic Fertilizer On Crop Performance Under A Microirrigation-Plastic Mulch Regime, Niyi S. Omidire, Raymon Shange, Victor Khan, Russell Bean, Jewel Bean
Professional Agricultural Workers Journal
Abstract
This study was conducted at S & B Farm located in Eufaula, AL in 2014. The treatments were Inorganic fertilizer/“Farmer’s Mix” (NPK 13:13:13 + ammonium nitrate mixed in 3:1 ratio); Inorganic fertilizer/“Farmer’s Mix” (NPK 13:13:13 + ammonium nitrate mixed in 3:1 ratio + Bio-grow) plus microbe mix; and Organic Fertilizer – Mighty Grow (4-3-4) with a microbe mix. All fertilizers were applied prior to mulch application after which the following crops squash (Cucurbita pepo L.), cucumber (Cucumis sativus L.), and okra (Abelmoschus esculentus L. Moench) were directly seeded in a complete randomized …
Influence Of Ph And Bulk Density On Carbon Dioxide Efflux In Three Urban Wetland Types, Christopher Chappell, Andra Johnson
Influence Of Ph And Bulk Density On Carbon Dioxide Efflux In Three Urban Wetland Types, Christopher Chappell, Andra Johnson
Professional Agricultural Workers Journal
Abstract
The aim of this study was to understand soil carbon dioxide (CO2) efflux of three different urban wetlands and how pH and bulk density relate to soil CO2 efflux of each wetland. The three wetlands were bottomland, upland, and shrub/scrub. The study was conducted over a twenty week period using the Li-Cor 8100 “closed chamber” method to measure soil CO2 efflux. The findings show that the bottomland wetland efflux was significantly higher than the shrub/scrub and upland wetland. The pH of shrub/scrub was significantly higher than the upland. The bulk density of the bottomland was …
Assessing Small And Medium-Sized Farmers' Willingness To Produce Alternative Biofuel Feedstocks, Andra Johnson, Charles Butler
Assessing Small And Medium-Sized Farmers' Willingness To Produce Alternative Biofuel Feedstocks, Andra Johnson, Charles Butler
Professional Agricultural Workers Journal
Abstract
The study assessed the willingness of small and medium-sized farmers to produce alternative biofuel crops in Louisiana and Mississippi. Data were collected from a random sample of 304 participants. The results revealed that the majority of the respondents were males, African Americans, over 50 years, part-time farmers, and a third earned less than $1,000 per year from farming. Most of the respondents (75%) indicated an interest in alternative fuel development, and 72% do not use alternative fuels in their operations. Also, a majority of respondents (83%) indicated that they would like to learn more about opportunities for alternative fuel …
An Analysis Of The Characteristics And Practices Of Selected Alabama Small Livestock Producers: A Focus On Economics And Marketing, Jannette R. Bartlett, Nii O. Tackie, Mst Nusrat Jahan, Akua Adu-Gyamfi
An Analysis Of The Characteristics And Practices Of Selected Alabama Small Livestock Producers: A Focus On Economics And Marketing, Jannette R. Bartlett, Nii O. Tackie, Mst Nusrat Jahan, Akua Adu-Gyamfi
Professional Agricultural Workers Journal
Abstract
The study examined the characteristics and practices of small livestock producers, focusing on economics and marketing. Data were obtained from a convenience sample of 121 small producers from several South Central Alabama counties, and were analyzed using descriptive statistics, including chi-square tests. The socioeconomic characteristics reflected a higher proportion of part-time farmers; a higher proportion with at most a two-year/technical degree or some college education; and a higher proportion with $40,000 or less annual household income. A majority had been farming more than thirty years, and most had small herds. Also, very few made profits; many sold animals live …
Screening Of Olive Cultivars For Tolerance To Fusicladium Oleagineum In South Africa, Zakhele Cyril Msimango
Screening Of Olive Cultivars For Tolerance To Fusicladium Oleagineum In South Africa, Zakhele Cyril Msimango
Professional Agricultural Workers Journal
Abstract
This study evaluated commercial olive cultivars for resistance to olive leaf spot (OLS). A growth chamber trial was undertaken with one temperature treatment (16°C) applied during inoculation while a relative humidity (RH) of above 80% was maintained. Plants were kept for 48 hours at 99% RH after inoculation and then moved to shade netted area for disease development at a temperature of 25±5°C. The results were used for categorizing the eight olive cultivars evaluated in this study according to their OLS susceptibility. ‘Frantoio’ was categorized as most tolerant; ‘Nandi’ and ‘Leccino’ were found to be moderately tolerant, and ‘Nocellara …
Unseen Minutia, Sara Kapadia
Ecoscience + Art Initiative: Designing A New Paradigm For College Education, Scholarship, And Service, Changwoo Ahn
Ecoscience + Art Initiative: Designing A New Paradigm For College Education, Scholarship, And Service, Changwoo Ahn
The STEAM Journal
The paper presents a new initiative, EcoScience + Art, which blooms at George Mason University. The creator explains the background, history, and recent activities of the initiative, and also introduces an on-going special project called “The Rain Project”, a student participatory project to design, construct, and monitor a green infrastructure (i.e., floating wetland) for sustainable stormwater management on campus. The special project is geared to design and present a new paradigm to integrate college education, scholarship, and service. The relevance of the initiative and the special project to STEAM education is discussed.
Fall 2015
Scientia
Prairie prep; Chicago Wildsounds listens for ecosystem health; Up, up and away; Fulbright Travelogue: Health care in Fortaleza, Brazil; New course explores the Pope's encyclical on the environment; A "scent-sational" career in the flavor and fragrance industry; Lab notes; Paying tribute
The Agricultural Footprints On The Environment, Philip Houtz
The Agricultural Footprints On The Environment, Philip Houtz
Kaleidoscope
Industrialized agricultural systems have given America a convenient and affordable means to supply a surplus of food products to its citizens. Transgenic technology, synthesized fertilizers, advanced pesticides, concentrated animal feeding operations (CAFOs), and the use of farm machinery have all contributed to humanity’s ability to feed the world’s rapidly growing population. However, the energy-intensive food operation of today may not be as ideal as we assume. Fossil fuels are burned to meet the energy requirements for the continual production of large quantities of fertilizer and to keep farm machines operational. Fertilizer and pesticide runoff from farmland ultimately drains into rivers …
Using Choice Experiment Valuation Methods To Measure Public Preference For A New National Park In Maine, Alexander G. Wilsterman
Using Choice Experiment Valuation Methods To Measure Public Preference For A New National Park In Maine, Alexander G. Wilsterman
Journal of Environmental and Resource Economics at Colby
With global population increasing faster than ever, the need to protect land from development is at an all-time high. This paper seeks the measure the public preference for a new national park located in northern Maine. A national park will both protect the land and inject a much-needed economic stimulus to the surrounding communities. The study uses the choice experiment valuation method to quantify its results. Through this revealed preference we can quantify which characteristics are most important to the public so that these characteristics may be considered if the project is ever approved.
Golf Courses In Maine: Land Type Valuation Versus A Hedonic Pricing Analysis, Gregory Ladd, Jason Buco
Golf Courses In Maine: Land Type Valuation Versus A Hedonic Pricing Analysis, Gregory Ladd, Jason Buco
Journal of Environmental and Resource Economics at Colby
Many studies have been conducted analyzing the economic impact of golf courses on the local communities. These studies examine economic impacts of tournaments, endorsements, and vacation expenses of the major golf courses in the United States. However, there is little research conducted on the environmental impact of Golf courses, specifically in Maine. This paper performs a hedonic pricing analysis using housing prices in proximity to golf courses and compares it to the valuation of various land types in Maine. Housing prices were collected in the towns of Auburn, and North Yarmouth both near and distant from the local golf course. …
Converting Croplands To Grassland: A Spatial Analysis Of The Economic Feasibility Of Soil Greenhouse Gas Mitigation In Midwest, United States, Paco C. Defrancis
Converting Croplands To Grassland: A Spatial Analysis Of The Economic Feasibility Of Soil Greenhouse Gas Mitigation In Midwest, United States, Paco C. Defrancis
Journal of Environmental and Resource Economics at Colby
The global agriculture sector is responsible for close 20% of the aggregate anthropogenic greenhouse gas (GHG) emissions emitted since the start of the industrial age. Much of these emissions are attributed to the degradation of soils due to land use change when native ecosystems were converted to agricultural fields. Soil organic carbon (SOC) has been found to decrease in temperate soils when the native (such as a forest or grassland) ecosystem is replace by croplands. The aggregate amount of organic carbon stored in soils globally is estimated be 3.3x the size of the atmospheric carbon pool. Further soil degradation and …
Cost Benefit Analysis Of Café Standards Compared To The Alternative Fuel/Carbon Tax, Brian Levinson
Cost Benefit Analysis Of Café Standards Compared To The Alternative Fuel/Carbon Tax, Brian Levinson
Journal of Environmental and Resource Economics at Colby
The Cafe Standards were introduced in 1975 following the Oil Embargo. The goals of this program were simple. To reduce co2 emissions in vehicles by increasing a mandatory average mpg level for car manufacturers in the United States. Recently, in 2012, the Obama Administration set new Cafe Standard requirements for car manufacturers. By 2025, all new cars on the road in the United States must average 54.5 miles per gallon, which would double the current 27 mpg average in place right now. While the intentions of this policy are to reduce co2 emissions while at the same time increasing savings …
The Economics Of The Audubon Society's Sanctuary Program For Golf Courses, Dan Hyszczak
The Economics Of The Audubon Society's Sanctuary Program For Golf Courses, Dan Hyszczak
Journal of Environmental and Resource Economics at Colby
Millions of people play golf every year, and in 2011 Golf Courses gained $22 billion dollars in revenue. This statistic combined with golf’s inherent place in the natural environment lead to questions of value and development for golf course owners. In 1991, The Audubon Society created their Cooperative Sanctuary Program for Golf Courses (ACSP) to promote environmentally sustainable practices for golf courses and to recognize the courses that are the most environmentally in both the United States and around the world.
This paper builds off of prior research that connects golf course beauty with revenue by examining the effects of …
Preferences For Coral Reef And Fishery Management In Okinawa, Japan, Nils Carlson
Preferences For Coral Reef And Fishery Management In Okinawa, Japan, Nils Carlson
Journal of Environmental and Resource Economics at Colby
This study is an example of how a nonmarket valuation method – a choice experiment – can be used to influence and guide ecosystem conservation efforts. Using a choice experiment survey, this study estimates the willingness to pay (WTP) for certain hypothetical attributes of a restored and conserved coral reef in Okinawa, Japan. I find that an increase in the amount of fish available to catch in ten years as well as an increase in the extent and health of the coral reefs and the number of marine biodiversity found in the Okinawan waters after ten-years, both positively affect respondent’s …
An Exploratory Statistical Analysis Of The External And Internal Effects Of Art Museums In The United States, John Eder
Journal of Environmental and Resource Economics at Colby
An Exploratory Statistical Analysis of the External and Internal Effects of Art Museums in the United States
The Effects Of Land Conservation On Productivity, Robert Mccormick, Carolyn Fuwa
The Effects Of Land Conservation On Productivity, Robert Mccormick, Carolyn Fuwa
Journal of Environmental and Resource Economics at Colby
In this research the relationship between productivity of land conservation is analyzed using panel data of the GDP and acres conserved of all 50 U.S. states from 1998-2005. Two main theories of the conservation productivity relationship exist. The first maintains that conservation impedes productivity because it does not allow land cultivation. Conversely, the second theory maintains that land conservation has a positive effect on GDP due to the recreation and tourism it creates. Through the use of fixed effects and random effects regressions, the amount of land conserved per state is not a significant predictor of state GDP The GDP …
A Survey On Climate Change: How Beliefs Shape Responsibility, Connor P. Clancy, Sarah Beth Solomon
A Survey On Climate Change: How Beliefs Shape Responsibility, Connor P. Clancy, Sarah Beth Solomon
Journal of Environmental and Resource Economics at Colby
This paper examines the lack of awareness and feelings of personal responsibility for climate change. Previous literature suggests that while part of the United States population may be aware of climate change, they do not feel personally responsible for causing it despite feeling climate change’s effects just like everyone else. Furthermore, studies suggest that individuals also do not believe climate change will affect them now, but rather it is an issue for future generations. Using a survey, we examine which demographics and personal factors are most important in eliciting awareness for climate change, and furthermore, personal responsibility for its effects. …
Invited Introduction To Jerec, Noelwah Netusil
Invited Introduction To Jerec, Noelwah Netusil
Journal of Environmental and Resource Economics at Colby
No abstract provided.
Welcome By The Editor, Sahan T. M. Dissanayake
Welcome By The Editor, Sahan T. M. Dissanayake
Journal of Environmental and Resource Economics at Colby
No abstract provided.
Understanding The Backlog Problems Associated With Requests For Continued Examination Practice, Sean Tu
Understanding The Backlog Problems Associated With Requests For Continued Examination Practice, Sean Tu
Duke Law & Technology Review
One of the greatest problems facing the current patent administration is a long patent pendency period. This study focuses on Request for Continued Examination (RCE) practice, and its effects on the current patent application backlog problem. RCEs are used to continue prosecution after a patent examiner has issued a final rejection. However, now that RCEs are placed on an examiner’s special docket, some examiners may pick up prosecution one to two years after the last action. Accordingly, there are great inefficiencies that may be created by this delay, such as relearning issues and questions from the previous action, diminished value …
Kafkas Das Urteil Und Die Philosophie Des Strafsystems, Amelia Smith
Kafkas Das Urteil Und Die Philosophie Des Strafsystems, Amelia Smith
CrissCross
No abstract provided.
Text To Screen Adaptation: Examining Reverse Ekphrasis In Joe Wright’S Films Adapting For, Hannah Dhue
Text To Screen Adaptation: Examining Reverse Ekphrasis In Joe Wright’S Films Adapting For, Hannah Dhue
CrissCross
Adapting for the screen is an arduous task – one that never seems to fulfill readers’ expectations. Screenwriter Charlie Kaufman expertly illustrated this phenomenon with his award-winning script, Adaptation (2002). In the film, Nicholas Cage plays both Charlie, a scatterbrained but devoted screenwriter, and Donald, Charlie’s laid-back twin. Charged with adapting Susan Orlean’s The Orchid Thief, Charlie lets his fear of failing to meet his audience’s expectations turn his work into a nightmarish, insurmountable task. When Charlie’s boss suggests that he make the book’s two main characters fall in love in the film version, he challenges the deviation from the …
Ghostshipping, Margot A. Kelley
Yesterday's Edges: Land, Sea, Sky, Ellen Goldsmith