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-
- Description:
- The challenges of using inadequate online recruitment systems can be addressed with machine learning and software engineering techniques. Bi-directional personalization reinforcement learning-based architecture with active learning can get recruiters to recommend qualified applicants and also enable applicants to receive personalized job recommendations. This paper focuses on how machine learning...
- Keyword:
- Reinforcement learning, Active learning, Contextual Bandit, NLP, NER, Sentiment Analysis, Counter factual Evaluation, Travel Industry, Unit tests, Serverless Functions, Language Understanding, Azure Cosmos DB, Serverless Functions, Azure Personalizer,
- Subject:
- Natural language processing (Computer science), Artificial intelligence, Sentiment analysis, Reinforcement learning, and Machine learning
- Creator:
- Ezana N. Beyenne
- Owner:
- Ezana Negga Beyenne
- Publisher:
- Data Science Masters Theses
- Date Uploaded:
- 03/15/2023
- Date Modified:
- 03/15/2023
- Resource Type:
- Dissertation and Masters Thesis
-
- Description:
- Attitude control in quadrotor Unmanned Aerial Vehicle (UAV) systems is traditionally managed by optimal control loops tuned to minimize errors in performance. While robust, these loops perform sub-optimally in dynamic and unpredictable environments which inspire new interest in sophisticated solution and approaches such as reinforcement learning (RL) approaches which should...
- Keyword:
- Intelligent Systems, Reinforcement Learning, Quadcopters, Learning and Adaptive Systemsons, Aerial Systems: Mechanics and Control, Proximal Policy Optimization, Drones, and Attitude Control
- Subject:
- Space vehicles--Attitude control systems, Proximal Policy Optimization, Reinforcement learning, Policy Gradient, Drone aircraft, and Machine learning
- Creator:
- Stephen Kleppinger,
- Contributor:
- Bharadwaj, Shreenidhi (advisor)
- Owner:
- Stephen Michael Kleppinger
- Publisher:
- Northwestern University
- Language:
- English
- Date Uploaded:
- 04/05/2022
- Date Modified:
- 04/05/2022
- Date Created:
- 12-2021
- Resource Type:
- Masters Thesis
-
- Description:
- A study to investigate the role of population sex ratio in gender switching in an A. Triphyllum population along with the role of different environmental factors and management activities on plant size and population sex ratio in two different populations
- Keyword:
- plant biology and conservation
- Subject:
- Botany and Conservation of natural resources
- Creator:
- Tienes, Melissa
- Owner:
- Chris Diaz
- Date Uploaded:
- 03/16/2022
- Date Modified:
- 03/16/2022
- Date Created:
- 2011
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis discussed how motifs of height and depth in Black literature highlight Black characters’ inability to form positive racial identities. The thesis uses three canonical pieces of Black literature, Passing, Native Son, and Plum Bun, to demonstrate that Black characters who try to reimagine White space are forced into...
- Keyword:
- literature
- Creator:
- Stovall, Jessica Lee
- Owner:
- Chris Diaz
- Date Uploaded:
- 12/09/2021
- Date Modified:
- 12/09/2021
- Date Created:
- 2013
- Resource Type:
- Masters Thesis
-
- Keyword:
- social work
- Creator:
- Caldwell, Lewis A. H.
- Owner:
- Chris Diaz
- Date Uploaded:
- 04/07/2021
- Date Modified:
- 04/07/2021
- Date Created:
- 1940
- Resource Type:
- Masters Thesis
-
- Description:
- The 2005 NHL Lockout instituted a hard salary cap, which is the most limiting salary cap of the major US sports leagues. The NHL as a result doesn’t have the luxury of overpaying or dumping a contract as other professional sports leagues have, which places a huge constraint and emphasis...
- Keyword:
- hockey, NHL, sports analytics, national hockey league, and player performance
- Subject:
- Data Science
- Creator:
- Sean Prentis, Greg Ackerman, and Quinn MacLean
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 06/13/2020
- Date Modified:
- 06/13/2020
- Date Created:
- 2020-06-07
- Resource Type:
- Masters Thesis
-
- Description:
- CONTENTS: Tomography of Exsolution Processes in Magnetite; Amorphous Intergranular Phase Controls the Properties of Human Tooth Enamel; Inorganic-Organic-Inorganic Double-Hybrid Interfaces in Cuprite Nanorod- Gold Nanoparticle Composites; Characterization of DNA-wrapped CNTs using Atom Probe Tomography
- Keyword:
- materials science and engineering
- Subject:
- Materials science and Engineering
- Creator:
- Cohen, Michael Jarrett
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 06/02/2020
- Date Modified:
- 06/02/2020
- Date Created:
- 2014
- Resource Type:
- Masters Thesis
-
- Description:
- Advances in machine learning and artificial intelligence (AI) are enabling computers and robotics to take on an increasing number of work-related tasks that previously were the sole domain of humans. This trend raises questions: Which jobs will be most susceptible to replacement by automation? How many workers risk being replaced?...
- Keyword:
- Artificial Intelligence, Automation, Worker Displacement, and Labor Economics
- Subject:
- Artificial intelligence and Labor market
- Creator:
- Rick Miller
- Contributor:
- James Hackney, J.D. (Second Reader) and Dr. Anil D Chaturvedi (First Reader)
- Owner:
- Rick Miller
- Language:
- English
- Date Uploaded:
- 05/17/2020
- Date Modified:
- 05/17/2020
- Date Created:
- 2020-05-17
- Resource Type:
- Masters Thesis
-
- Description:
- Minnesota is the land of 10,000 lakes (technically 11,842 > 10 acres)! This bold proclamation can be seen everywhere from license plates to tourism pamphlets; it reveals how much water matters to the state on not only a commercial level, but as the very identity of the community. At the...
- Keyword:
- st. paul, water, property, price, lakefront, linear regression, minneapolis, python, twin cities, quality, hedonic pricing method, and minnesota
- Subject:
- Data Science
- Creator:
- David Charles Sedgwick
- Owner:
- Chris Diaz
- Date Uploaded:
- 11/26/2019
- Date Modified:
- 12/17/2019
- Date Created:
- 2019
- Resource Type:
- Masters Thesis
-
- Description:
- With a glut of competing priorities, the financial industry faces major challenges in extracting timely, relevant, and specifically-focused information from text. Without clear-cut business cases, making the investment in text analysis methods does not justify the return on investment. Furthermore, the business landscape continues to become increasingly complex, and at...
- Keyword:
- knowledge graphs, LDA, ontologies, topic modeling, text analytics, and machine learning
- Subject:
- Data Science
- Creator:
- Troy Danka
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 11/21/2019
- Date Modified:
- 12/17/2019
- Date Created:
- 2019
- Resource Type:
- Masters Thesis
-
- Description:
- Using transcripts from Kansas State University Libraries’ (KSUL) virtual reference services (VRS), an experimental design was created to investigate the value and impact of different natural language processing techniques in the context of creating predictive models. Models were created to use only the first few word tokens supplied by VRS...
- Keyword:
- academic libraries, virtual reference, predictive modelling, and natural language processing
- Subject:
- Data Science
- Creator:
- Jeremy Walker
- Owner:
- Jeremy Walker
- Date Uploaded:
- 06/23/2019
- Date Modified:
- 12/17/2019
- Date Created:
- 2019
- Resource Type:
- Masters Thesis
-
- Description:
- This study explored the mentoring experiences of doctoral students in science, technology, engineering, and mathematics (STEM) doctoral degree programs at Northwestern University. Research suggests that mentoring relationships support student success in STEM disciplines, and further, that lack of mentorship may be a barrier for female students. A mixed-methods approach employing...
- Keyword:
- doctoral students, STEM, mentoring relationships, women, and mentorship
- Subject:
- Women in science, Education, Higher, and Mentoring in education
- Creator:
- Lisa J Blaskowski
- Owner:
- ljb729
- Location:
- Evanston
- Language:
- English
- Date Uploaded:
- 08/24/2018
- Date Modified:
- 08/24/2018
- Date Created:
- 2015-06-19
- Resource Type:
- Masters Thesis
-
- Description:
- Regtech, a reference to the application of new technologies to bank regulation, mandates a conversation about reducing the burden of bank regulation by letting computers take over some of the handling of regulatory text. Bank regulations and the related manuals, guidance, or other supplements are mostly unstructured. Software tools and...
- Keyword:
- Predictive Analytics, Market Risk Rule, Financial Industry Business Ontology, and Bank Secrecy Act
- Subject:
- Predictive Analytics
- Creator:
- Loretta Clare Ardaugh
- Owner:
- Scholarly Digital Publishing
- Date Uploaded:
- 07/26/2018
- Date Modified:
- 07/26/2018
- Date Created:
- 2017
- Resource Type:
- Masters Thesis
-
- Description:
- Carbonation, a neutralizing reaction in cement paste, can be used to date cracks in cementitious materials. Currently, comparison between two cracks is the only method available to predict a relative age with carbonation. These two crack studies require a crack of known age in a similar material with similar exposure...
- Keyword:
- civil engineering
- Creator:
- Laura E. Sullivan-Green
- Owner:
- Chris Diaz
- Date Uploaded:
- 08/14/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2005-03
- Resource Type:
- Masters Thesis
-
- Description:
- The concrete currently used in the slip-form paving process is a low slump concrete that requires both internal and external vibration in order to achieve satisfactory compaction. The use of vibrator fingers for the internal vibration often leads to trails on the surface of the pavement and to segregation around...
- Keyword:
- Slip-form pavement and Self-consolidating concrete
- Creator:
- Jean-Juste Mbele
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/19/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2007
- Resource Type:
- Masters Thesis
-
- Description:
- Performance monitoring of deep excavations typically includes slope inclinometers, optical surveying of soil deformation, tiltmeters and strain gages. Current monitoring data collection and processing requires time consuming site visits and manual data reduction by project engineers. Development of robotic and remote access geotechnical instrumentation conceptually allows processed data to be...
- Keyword:
- Excavation, Ground control, and Nondestructive testing
- Creator:
- Miltiadis Langousis
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2007-03
- Resource Type:
- Masters Thesis
-
- Description:
- Experimental Time Domain Reflectometry (TDR) data obtained from the field are compared with numerical simulations using a finite-difference solution of the transmission line equations. The model simulates transmission of a voltage pulse along a lossy coaxial cable where deformities on the cable, such as crimps and shears, are represented by...
- Keyword:
- Time-domain reflectometry and Structural health monitoring
- Creator:
- Stéphane P. Bordas
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 1998-12
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis combines field and laboratory measurements with three dimensional (3D) finite element analysis (FEM) to demonstrate the use of Time Domain Reflectometry (TDR) cable-grout composites to measure localized shearing in soft soil. Past field installations of TDR cable-grout composites in rock have lead to its widespread use in the...
- Keyword:
- Structural health monitoring and Time-domain reflectometry
- Creator:
- James Tanner Blackburn
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2002-04
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis presents the application of Time Domain Reflectometry technology in nine case studies. Presented in detail are cable and grout installation techniques, data acquisition instrumentation and autonomous real time monitoring of soil deformation using TDR. The goal of this work is to summarize the state of the technology in...
- Keyword:
- Structural health monitoring
- Creator:
- Matthieu L. Dussud
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2002-12
- Resource Type:
- Masters Thesis
-
- Description:
- Miniaturized, wireless instrumentation is now a reality and this thesis describes development of such a system to monitor crack response. Comparison of environmental (long-term) and blast-induced (dynamic) crack width changes in residential structures has lead to a new approach to monitoring and controlling construction vibrations. In wireless systems transducer power...
- Keyword:
- Structural health monitoring
- Creator:
- Hasan Ozer
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2005
- Resource Type:
- Masters Thesis
-
- Description:
- Public concern over construction vibration-induced cracking has led to the development of a radically new approach to vibration, an autonomous crack comparometer (ACC). This thesis chronicles the first step of developing equipment and software necessary for this system. The new system will automatically compare longterm weather induced micrometer changes in...
- Keyword:
- Structural health monitoring
- Creator:
- Damian R. Siebert
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2000-06
- Resource Type:
- Masters Thesis
-
- Description:
- The thesis describes the second phase of development of the Autonomous Crack Comparometer (ACC) system to incorporate measurements of ground motions and add several changes in the autonomous operation. In order to obtain the ground motion and air blast data, four additional transducers have been added. There are now a...
- Keyword:
- Structural health monitoring
- Creator:
- Michaël Louis
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2000
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis consists of the data and analysis of structural responses for two different studies: the Office of Surface Mining (OSM) study of the velocity response of “atypical” residential structures and the Autonomous Crack Monitoring (ACM) study. The main basis of this thesis was to do additional analysis on a...
- Keyword:
- Structural health monitoring
- Creator:
- Laureen M. McKenna
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2002-03
- Resource Type:
- Masters Thesis
-
- Description:
- Autonomous Crack Measurement (ACM) facilitates simultaneous measurement of crack response to environmental changes and vibrations produced by various construction activities. Dual-purpose crack displacement sensors measure crack response, while the vibration environment is defined by standard seismological transducers and the weather environment is defined as changes in temperature and humidity. This...
- Keyword:
- Structural health monitoring and Cracking of concrete
- Creator:
- Mickey L. Snider
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2003-05
- Resource Type:
- Masters Thesis
-
- Description:
- All structures have cosmetic cracks, which have no influence on structural integrity and usually remain unremarked until the structure’s occupants sense ground vibrations. Such vibrations are often associated with engineering activity, but are rarely responsible for cracks. However, this is difficult to prove without scientific basis. Automated Crack Monitoring (ACM)...
- Keyword:
- Structural health monitoring and Cracking of concrete
- Creator:
- Markian B. Petrina
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2004-08
- Resource Type:
- Masters Thesis
-
- Description:
- Cosmetic cracks are very common in structures, and most of the time they remain unnoticed and do not decrease the structural integrity. Although these cracks are unremarkable and barely noticeable, occupants become concerned about these cracks when construction occurs nearby. In order to investigate the true nature of these cracks,...
- Keyword:
- Structural health monitoring and Cracking of concrete
- Creator:
- Remi Baillot
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2004-12
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis summarizes two further developments of the Autonomous Crack Monitoring (ACM) system, which facilitates simultaneous measurement of crack response to environmental changes and various dynamic events. The first component was measurement of crack responses in three different materials and locations in a residential structure subjected to ground vibrations produced...
- Keyword:
- Structural health monitoring
- Creator:
- Mike J. Waldron
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2006-06
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis summarized the qualification and testing of two commercial Autonomous Crack Monitoring (ACM) systems for use in measuring micrometer displacement of cracks. Qualification involved the assessment of both laboratory and field performance in a residential structure subjected to nearby quarry blasting for the production of roadway aggregate. Aggregate and...
- Keyword:
- Structural health monitoring
- Creator:
- Brandon G. Hughes
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2006-06
- Resource Type:
- Masters Thesis
-
- Description:
- Autonomous Crack Monitoring (ACM) and Autonomous Crack Propagation Sensing (ACPS) are two types of structural health monitoring in which characteristics of cracks are recorded over long periods of time. ACM seeks to correlate changes in widths of cosmetic cracks in structures to nearby blasting or construction vibration activity for the...
- Keyword:
- Structural health monitoring and Wireless sensor networks
- Creator:
- Matthew P. Kotowsky
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2010
- Resource Type:
- Masters Thesis
-
- Description:
- The Moraceae family includes several species producing edible fruits, including mulberry, fig, breadnut, and osage-orange.
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Witherup, Colby
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2013-05-13
- Resource Type:
- Masters Thesis
-
- Description:
- The underutilized tropical fruit tree, “cempedak” (Artocarpus integer (Thunb.) Merr. , Moraceae), is a major crop in Malaysia but the distribution of genetic diversity in the crop and its putative wild progenitor, “bangkong” (Artocarpus integer var. silvestris Corner), have not been studied. To investigate the diversity and origins of cempedak,...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Wang Mei Hua, Maria
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2014-11-20
- Resource Type:
- Masters Thesis
-
- Description:
- Current ecological restoration efforts seek to restore a target community, maximize biodiversity or provide habitat for rare species. In practice, restoration ecology is often initiated and sustained without knowledge or reverence to the belowground ecosystem processes, though these processes often subtend the long-term sustainability of aboveground and belowground ecological communities.
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Umek, Lauren G.
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2007-05-15
- Resource Type:
- Masters Thesis
-
- Description:
- Past efforts to reintroduce the native legume species Desmodium glutinosum and Lespedeza violacea into restored woodlands have not produced self-sustaining populations. Proposed factors preventing reintroduction include herbivory, persistent environmental effects of invasive shrubs, poor performance of commercial Rhizobium inoculants, and competitive displacement associated with elevated nitrogen availability. To address these...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Tsang, Byron Yan
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2012-11-27
- Resource Type:
- Masters Thesis
-
- Description:
- Pollination is a reproductive necessity in the majority of the world’s flowering plants. Pollen limitation threatens plant reproduction, particularly in self-incompatible species. Although assessing pollen limitation usually requires pollen supplementation experiments, alternative methods support the findings of traditional pollen supplementation experiments.
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Tonietto, Rebecca K.
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2009-04-28
- Resource Type:
- Masters Thesis
-
- Description:
- Pollination is a reproductive necessity in the majority of the world’s flowering plants. Pollen limitation threatens plant reproduction, particularly in self-incompatible species. Although assessing pollen limitation usually requires pollen supplementation experiments, alternative methods support the findings of traditional pollen supplementation experiments.
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Taira, Karen Elizabeth
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2013-10-29
- Resource Type:
- Masters Thesis
-
- Description:
- Two experiments were conducted to assess the germination, growth, and survival of Cirsium pitcheri Torr. ex Eaton T & G in the Chicagoland region. The first experiment involved growing seeds from various native populations to determine tolerance for the current Chicagoland climate. The second experiment tested three of the populations...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Staehlin, Benjamin
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2009-04-29
- Resource Type:
- Masters Thesis
-
- Description:
- Habitat fragmentation can alter the conditions of natural plant populations, introducing novel selective pressures. The ability of a population to respond to environmental change can be inferred by assessing the population’s genetic diversity and the heritability of traits thought to be under selection.
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Rivera, Ricardo
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2013-05-13
- Resource Type:
- Masters Thesis
-
- Description:
- Identifying factors that shape the spatial distribution of genetic variation within and among natural populations is crucial to understanding many population> and landscape>level processes. In this study, I characterize the strength and extent of spatial genetic structure in Oenothera harringtonii (Onagraceae), an insect>pollinated, gravity>dispersed herb endemic to the grasslands of...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Rhodes, Matthew Kent
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2013-09-26
- Resource Type:
- Masters Thesis
-
- Description:
- The tallgrass prairie once dominated much of the mid-western United States. Today, this highly productive system has been severely reduced, contributing to an array of environmental problems. The recent renaissance in natural area restoration and stewardship of the tallgrass prairie in the Chicago Wilderness region (Illinois, USA), especially in the...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Palmer, Corey
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/08/2023
- Date Created:
- 2014-05-16
- Resource Type:
- Masters Thesis
-
- Description:
- Nitrogen (N) deposition can alter belowground microbial communities, especially ectomycorrhizal (ECM) fungi, resulting in a reduced ability of associated trees to access organic nutrients. This study tested whether N addition decreases ECM species richness and shifts ECM species composition across spatial scales in a subtropical slash pine (Pinus elliottii) plantation...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Ning, Chen
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2014-07-17
- Resource Type:
- Masters Thesis
-
- Description:
- The environmental and plant physiological correlates of plant growth and reproductive effort in the locally threatened orchid, Cypripedium candidum Muhl. ex Willd were examined in the context of a conceptual model of demographic and reproductive trade-offs, focusing on three Illinois populations. This study addresses the current status and long-term trends...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Nies, Anne
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2014-05-02
- Resource Type:
- Masters Thesis
-
- Description:
- Plant-aphid systems provide a valuable opportunity for studying the ecological consequences of land use change for interacting species. The North American tallgrass prairie has undergone severe reduction and fragmentation due to agricultural development. The prairie perennial Echinacea angustifolia, a model system for studying population-level effects of habitat fragmentation, hosts a...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Muller, Katherine
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2013-05-15
- Resource Type:
- Masters Thesis
-
- Description:
- The introduction of non-native pests in general, and invasive plants in particular, has been receiving increasing interest by scientists, environmental groups, and to a certain extent the general public. Deleterious effects from the release of such alien species include threats to the environment, national economies, and even human health. The...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Madeja, Glen
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/06/2023
- Date Created:
- 2010-05-05
- Resource Type:
- Masters Thesis
-
- Description:
- Underutilized crops have the potential to economically benefit developing countries and to improve global food security. Breadfruit (Artocarpus altilis, Moraceae) is one such crop that can provide essential nutrients and requires relatively low-energy input to maintain compared to major crops. Humans have selected for many cultivars of breadfruit since its...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Laricchia, Kristen
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/08/2023
- Date Created:
- 2014-12-05
- Resource Type:
- Masters Thesis
-
- Description:
- With increasing urbanization and creation of novel habitat types, green roofs can provide usable habitat for many species. To date, most research on green roofs has focused on minimizing the environmental impacts of buildings but little is known about the ecological services they provide. Previous research has shown that although...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Ksiazek, Kelly
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/08/2023
- Date Created:
- 2011-06-17
- Resource Type:
- Masters Thesis
-
- Description:
- Hybridization is an important evolutionary pathway to genetic diversity, fitness, and ultimately to the emergence of new species. In contrast, hybridization between a native and an introduced species can lead to a loss of locally adapted gene complexes and ultimately to the extinction of the native. In the last decade,...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Huebner, Diane C.
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/08/2023
- Date Created:
- 2009-05-04
- Resource Type:
- Masters Thesis
-
- Description:
- Once widespread throughout southern Wisconsin, Quercus savannas are now one of the most endangered communities due to fire suppression and increasing landscape fragmentation. These plant communities are also highly susceptible to invasions by nonnative, exotic species. Understanding the mechanisms of exotic species invasion has been the focus of numerous studies....
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Hevey, Robert
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/08/2023
- Date Created:
- 2014-04-24
- Resource Type:
- Masters Thesis
-
- Description:
- Fire is an agent of ecosystem change that has played a critical role in shaping the tallgrass prairie ecosystem. Periodic prescribed fire maintains the prairie by removing woody and invasive plant species, and stimulating growth of native herbaceous species. Fire’s beneficial effect on the tallgrass prairie aboveground community, in terms...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Gross, Rachel
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/08/2023
- Date Created:
- 2008-10-20
- Resource Type:
- Masters Thesis
-
- Description:
- Due to concerns about population declines and habitat destruction, secretive marsh birds (SMBs) are of high conservation concern at state, regional, and national levels. Gaps in research on SMB habitat pose barriers to conservation and wetland restoration efforts.
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Glisson, Wesley James
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/08/2023
- Date Created:
- 2012-10-04
- Resource Type:
- Masters Thesis
-
- Description:
- Restoration managers may select seed from a variety sources for their restoration projects. If the purchased seed is not of the local ecotype, land managers run the risk of poor establishment in the short-term and outcrossing between local and non-local ecotypes, genetic swamping, and the loss of local genetic diversity...
- Keyword:
- plant biology
- Subject:
- plant biology
- Creator:
- Gallagher, Megan Katherine
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/14/2017
- Date Modified:
- 11/08/2023
- Date Created:
- 2011-05-24
- Resource Type:
- Masters Thesis