Digital Commons Network^™

Vegetation Type Is An Important Predictor Of The Arctic Summer Land Surface Energy Budget, Jacqueline Oehri, Gabriela Schaepman-Strub, Jin Soo Kim, Raleigh Grysko, Heather Kropp, Inge Grünberg, Vitalii Zemlianskii, Oliver Sonnentag, Eugénie S. Euskirchen, Merin Reji Chacko, Giovanni Muscari, Peter D. Blanken, Joshua F. Dean, Alcide Di Sarra, Richard J. Harding, Ireneusz Sobota, Lars Kutzbach, Elena Plekhanova, Aku Riihelä, Julia Boike, Nathaniel B. Miller, Jason Beringer, Efrén López-Blanco, Paul C. Stoy, Ryan C. Sullivan, Marek Kejna, Frans Jan W. Parmentier, John A. Gamon, Mikhail Mastepanov, Christian Wille, Marcin Jackowicz-Korczynski, Dirk N. Karger, William L. Quinton, Jaakko Putkonen, Dirk Van As, Torben R. Christensen, Maria Z. Hakuba, Robert S. Stone, Stefan Metzger, Baptiste Vandecrux

School of Natural Resources: Faculty Publications

Despite the importance of high-latitude surface energy budgets (SEBs) for land-climate interactions in the rapidly changing Arctic, uncertainties in their prediction persist. Here, we harmonize SEB observations across a network of vegetated and glaciated sites at circumpolar scale (1994–2021). Our variance-partitioning analysis identifies vegetation type as an important predictor for SEB-components during Arctic summer (June-August), compared to other SEB-drivers including climate, latitude and permafrost characteristics. Differences among vegetation types can be of similar magnitude as between vegetation and glacier surfaces and are especially high for summer sensible and latent heat fluxes. The timing of SEB-flux summer-regimes (when daily mean values …

Bioenergy Crops As A Promising Alternative To Fossil Fuels In Louisiana: A Geographic Information System (Gis) Perspective, Yaw A. Twumasi, Zhu H. Ning, John B. Namwamba, Abena B. Asare-Ansah, Edmund C. Merem, Harriet B. Yeboah, Judith Oppong, Matilda Anokye, Diana B. Frimpong, Priscilla M. Loh, Julia Atayi, Rechael N.D. Armah, Caroline Y. Apraku, Opeyemi I. Oladigbolu, Cynthia C. Ogbu, Leah W. Njeri, Joyce Mcclendon-Peralta

Faculty Publications

Rising greenhouse gas emissions are causing climate change, and the world’s focus has shifted to the need to reduce our reliance on fossil fuels. There has been a rise in the published literature on the utilization of crops for bioenergy production in Louisiana. However, very few scholarly documents have used Geographic Information Systems (GIS) to map the distribution of potential bioenergy crops in Louisiana. This study seeks to fill the void by evaluating the potential of bioenergy crops in Louisiana for energy production using GIS. Given this objective, the agricultural census data for 1999, 2009, 2019, and 2020 obtained from …

Ceo Characteristics And Compensation In Fortune 100 Companies, Adam C. Carroll

Theses & Dissertations

The existing literature on CEO compensation places heavy emphasis on the interrelationships between educational background and personal experiences of a CEO and how it affects a firm’s performance and, in-turn, how the firm’s performance impacts the CEO compensation. However, there is sparse research on the direct impact that socio-demographic factors and other variables have on CEO compensation. This dissertation’s aim is to identify if socio-demographic factors play a role in how a firm compensates its CEOs by using information gathered from the CEOs of the top Fortune 100 companies.

Given the non-random and limited sample, the primary research methods in …

The Black Male Triumph Story: Successfully Achieving Graduate Degrees, Albert Charles Furlow Iii

Theses & Dissertations

Research Focus. In post-baccalaureate education, Black males have historically and continuously been underrepresented and misrepresented; however, this research was focused on abstracting the positive characteristics that were similar among successful post-baccalaureate Black male graduates. My research looked at the post-baccalaureate attainment of 16 Black male participants in a nuanced way by pinpointing the common positive attributes of the successful scholars. Specifically, I explored the importance of informing educators about necessary tools that contributed to the success of Black males in graduate school. The goal of my study was to target policymakers in education, present and future researchers, practitioners, and faculty …

The Role Of Student Services In Student Retention: A Case Study Of A Ugandan Private University, Olive Kajoina

Theses & Dissertations

Student services plays an essential role in higher education not only by reducing student dropout rates, but also by increasing student retention. This study explored the role of student services in promoting student retention which in turn addresses the problem of college student drop out at a private, non-profit Ugandan university. The purpose of the study was to identify the types of student services available at the university and understand how such are utilized to meet student needs and promote student retention. A qualitative case study method was be used to understand the role of student services in student retention …

Faculty And Staff Perceptions Of Their Roles In Preparing Students For College And Career Readiness: A Qualitative Exploration Of High Schools, Community Colleges, And Universities, Monica Ruiz

Theses & Dissertations

In 2020, nearly half of Texas’s 385,000 public high school graduates were unprepared for college-level reading or math. Limited research reveals K-12 faculty perceive limited roles and responsibilities in the college process, relying heavily on guidance counselors and college admissions counselors for preparing students for college and careers. The purpose of this study was to help fill this gap by answering the central research question: How do high school and college-level faculty and staff prepare high school students for college and careers? I chose a qualitative, interpretive design to explore educators’ individual and shared social meanings and interpretations. I used …

Nursing Students' Knowledge Of And Attitudes Towards Near-Death Experiences, Laura Lee Varela

Theses & Dissertations

Incidence of reported near-death experiences (NDEs) has increased over decades; however, they continue to be inappropriately pathologized or dismissed. These types of responses to disclosures of NDEs by patients can potentially lead to them having problems integrating the experience into their lives. The purpose of this study was to assess undergraduate nursing students’ levels of accurate knowledge of and attitudes towards NDEs and to determine the predictors of nursing students’ knowledge of and attitudes toward NDEs. Additionally, I explored the sources in which nursing students acquire NDE knowledge. I accomplished this by using a cross-sectional, correlational research study design. I …

An Autoethnograpy Of A Baby Boomer In Higher Education: Challenges And Catalysts For Change, Deborra Finlan

Theses & Dissertations

Higher education as a baby boomer brings mental, physical, and economic adjustments, concerns, and insecurities. Additionally, life delivers unexpected challenges and barriers which can cause hardships requiring various types of motivation. Fortunately, there are also catalysts which can contribute toward successes. Literature from four major elements were the focus in this study: motivation, adult learning, challenges, barriers, and catalysts. Theorists and theories included Vroom’s expectancy theory of motivation with the added factor of cost, and Ryan and Deci’s theory on self-determination; Mezirow’s transformative learning and Knowles’s self-directed learning; Cross’s theory on educational barriers—situational, dispositional, and institutional; and Cobb’s social support …

U.S. Army Physician Assistant Retention: A Latent Class Analysis, Robert Greener

Theses & Dissertations

Introduction: Retaining employees is crucial to the success of organizations. While significant effort has been made to model employee retention, models have been unable to significantly predict retention. The purpose of this quantitative, non-experimental, cross-sectional study was to develop an improved employee retention model which could be used as a practical guide to improve employee retention. Materials and Methods: The study analyzed a survey created, implemented, and collected by the Statistical Cell at the U.S. Army Center of Excellence. In September of 2020, all 864 active-duty PAs were sent a link to the survey and 290 completed the survey, …

Anti-Dysplastic Effect Of Nettle Extract And Its Nano-Formulation On 7,12-Dimethylbenz[A]Anthracene Induced Hamster Buccal Pouch Carcinogenesis, Samah K. Ezzat, Amira M. Elsherbini

Mansoura Journal of Dentistry

Objective: Oral squamous cell carcinoma (OSCC) is the most common malignancy in the oral cavity with no definitive cure. In this study, chitosan loaded with nettle was used for the treatment of 7,12-Dimethylbenz[a] anthracene (DMBA)-induced oral squamous cell carcinoma compared to regular chemotherapy with 5-Fluorouracil (5-FU).Material and methods: Sixty pathogen-free male Syrian golden hamsters were used. The control group served as a negative control with no intervention, while the remaining animals received DMBA for 16 weeks then they were divided equally into 5 groups as follows; DMBA group received no treatment, while the 5-FU group was treated with 15mg/kg of …

Immunohistochemical Assessment Of Angiogenesis And Cell Proliferation In Aggressive Versus Non-Aggressive Central Giant Cell Granuloma., Mena F. Mesiha, Mahmoud F. El Sherbeny, Sherif Y. El Nagdy

Mansoura Journal of Dentistry

Objective: The current study investigated the expression of MCM3 and CD31 in aggressive versus non-aggressive central giant cell granuloma (CGCG ) Materials and methods: Thirty-three paraffin blocks for CGCG cases were collected from Oral Pathology Departments, Faculty of Dentistry, Mansoura, and Alexandria Universities. The Immunohistochemical staining for CD31 and MCM 3 was performed, assessed, and scored. Results: Mean age of the studied cases was 35.6±9.1 years. The lesions that occurred in the mandible represented the majority of cases [27 cases (81.8%)]. The study revealed an association between aggressiveness and the presence of large swelling, pain, cortical perforation, root resorption, and …

Stem Cell Marker As A Factor For The Different Biological Behavior Of Ameloblastoma And Odontogenic Keratocyst, Hanan M. Sayed Ahmed, Doaa A. Esmaeil, Sherif Y. Elnagdy

Mansoura Journal of Dentistry

Objective: To investigate the immunohistochemical expression of SOX2 among the studied cases of ameloblastoma and odontogenic keratocyst in order to show if it correlates to the biological behavior of those odontogenic lesions. Materials and Methods: The study was carried out on 30 histo-pathologically confirmed cases of (15 ameloblastomas and 15 odontogenic keratocysts). These blocks were collected from archived files of the Department of Oral Pathology, Faculty of Dentistry, Mansoura University. Sections were subjected to Immunohistochemical staining by SOX2 according to a standard protocol. Results: OKCs showed higher expression of SOX2 than Ab in all epithelial layers not confined to the …

Clinicopathological Study Of Oral Plasma Cell Granuloma, Aya M. El-Bastawesi, Mona M. Ibrahim, Nadia A. El-Sissy

Mansoura Journal of Dentistry

Objective: To identify the characteristic clinical and Histopathologic features encountered in the oral lesions of PCG and thus, clarifying the variability nature of the studied oral plasma cell granulomas (OPCGS). Materials and Methods a sample of 25 retrospective paraffin blocks of the OPCGS were thoroughly investigated histopathologically. Results: the studied OPCG was mainly represented as a gingival swelling, there was a female tendency in most of the studied OPCGS (92%), ranging from 11-73 years with a mean of 42.40. the majority of the current OPCG (64%) did not express any bone changes. the OPCGS of the present work were characterized …

Immunohistochemical Expression Of Ezh2 In Mucoepidermoid Carcinoma Of Salivary Glands, Amira A. Mansour, Mona M. Ibrahim, Ahmed E. Ahmed, Azza A. El Sissi

Mansoura Journal of Dentistry

Objective: To disclose the variation in EZH2 expression among the different grades of MEC and to analyze the marker's immunohistochemical (IHC) expression in relation to the clinicopathologic data of all cases. Material and methods: The present study was conducted on 15 blocks diagnosed as MEC including equal numbers of different grades. These blocks were selected from the archives of the Oncology Center, Mansoura University. The specimens embedded in the retrieved paraffin blocks were all fixed in 10% formalin. Sections of 4 microns’ thickness intervals were serially cut and prepared for the EZH2 staining. Chi-square, Monte Carlo, and Fisher Exact tests …

Effect Of Food Simulating Solvents On Surface Roughness And Microhardness Of Bulk Fill Resin Composites., Hadeer M. Hal, Ashraf I. Ali, Noha A. El-Wassefy, Marmar A. Montaser

Mansoura Journal of Dentistry

Objectives: To evaluate the effect of food simulating solvents on surface roughness and microhardness of bulk fill resin composites in-vitro. Materials and methods: A total of 180 discs were made with (Filtek One bulk fill, REVEAL HD and x-tra fil bulk fill (n=60). The baseline data of surface roughness and microhardness measurements were recorded. Each group was divided into three subgroups, subgroup1 was immersed into methyl ethyl ketone (n=20), subgroup2 was immersed into ethanol (n=20) and, subgroup3 was immersed into artificial saliva (n=20) as control group. After 30 days, half of each subgroup was tested for surface roughness (n=10) by …

Mdpb-Containing Self-Etch Dental Adhesive: Antibacterial Activity And Effect Of Different Dentinal Surface Preparation, Sally N. Zaki, Ragy N. Saad, Hamdi H. Hamdan, Salah H. Mahmoud

Mansoura Journal of Dentistry

Objective: To evaluate the effect of MDBP-containing self-etch (SE) adhesive and different dentin surface pretreatments on antibacterial activity Materials and Methods: A total of forty disc shaped specimens fabricated (8 mm in diameter and 1.5 mm thickness) were divided into four main groups according to type of the surface treatment method; deionized water(control), CHX, Papin enzyme and Riboflavin. Each group was sub-divided into 2subgroups (n=5) according to the type of adhesive: classic or MDPB containing SE adhesives. Bonded specimens were stored in deionized water for 24 hr. (n=6). The plates contained dices shaped specimen was incubated at 37o C for …

Will Snc Bring Back Winter Carnival?, Alex Downing

Ask the Abbot

Abbot Pennings answers questions about Winter Carnival, archived from the SNC website.

Revenue Collections, December 2022, Tennessee. Department Of Revenue

2022 Revenue Collection Reports

No abstract provided.

(R1981) Evaluating The Mhd Non-Newtonian Fluid Motion Past A Stretching Sheet Under The Influence Of Non-Uniform Thickness With Dufour And Soret Effects Implementing Chebyshev Spectral Method, M. M. Khader, Ram Prakash Sharma

Applications and Applied Mathematics: An International Journal (AAM)

A study is made on the development of hydromagnetic non-Newtonian Casson and Williamson boundary layer flow in an electrically conducting fluid in the presence of heat flux, mass flux, and the uniform magnetic field. The governing non-linear system of PDEs is transformed into a set of non-linear coupled ODEs and then treated numerically by using the Chebyshev spectral method. The velocity, temperature, and concentration fields of the steady boundary layer flow, which are generated by the stretched sheet with non-uniform thickness are discussed. The simultaneous effects of the external magnetic field, Soret and Dufour phenomena with reference have been explored. …

(R1886) Effect Of Aggregation Function In Moma-Plus Method For Obtaining Pareto Optimal Solutions, Alexandre Som, Abdoulaye Compaoré, Kounhinir Somé, Blaise Somé

Applications and Applied Mathematics: An International Journal (AAM)

In this work, we have proposed some variants of MOMA-Plus method that we have numerically tested for the resolution of nonlinear multiobjective optimization problems. This MOMA-Plus method and variants differ from each other by the choice of aggregation functions in order to reduce the number of objective functions. The theoretical results allowing us to use these aggregation functions to transform multiobjective optimization problems into single objective optimization problems are proved by two theorems. This study has highlighted the advantages of each aggregation function according to the type of Pareto front of the optimization problem. Six benchmarks test problems have been …

Earlier Snowmelt May Lead To Late Season Declines In Plant Productivity And Carbon Sequestration In Arctic Tundra Ecosystems, Donatella Zona, Peter M. Lafleur, Koen Hufkens, Barbara Bailey, Beniamino Gioli, George Burba, Jordan P. Goodrich, Anna K. Liljedahl, Eugénie S. Euskirchen, Jennifer D. Watts, Mary Farina, John S. Kimball, Martin Heimann, Mathias Göckede, Martijn Pallandt, Torben R. Christensen, Mikhail Mastepanov, Efrén López-Blanco, Marcin Jackowicz-Korczynski, Albertus J. Dolman, Luca Belelli Marchesini, Roisin Commane, Steven C. Wofsy, Charles E. Miller, David A. Lipson, Josh Hashemi, Kyle A. Arndt, Lars Kutzbach, David Holl, Julia Boike, Christian Wille, Torsten Sachs, Aram Kalhori, Xia Song

Daugherty Water for Food Global Institute: Faculty Publications

Arctic warming is affecting snow cover and soil hydrology, with consequences for carbon sequestration in tundra ecosystems. The scarcity of observations in the Arctic has limited our understanding of the impact of covarying environmental drivers on the carbon balance of tundra ecosystems. In this study, we address some of these uncertainties through a novel record of 119 site-years of summer data from eddy covariance towers representing dominant tundra vegetation types located on continuous permafrost in the Arctic. Here we found that earlier snowmelt was associated with more tundra net CO2 sequestration and higher gross primary productivity (GPP) only in June …

Luther And Jean Marsh Papers, 1944-2001, Luther Alvin Marsh, Jean (Crawford) Marsh

Center for Restoration Studies Archives, Manuscripts and Personal Papers Finding Aids

No abstract provided.

Which Interval-Valued Alternatives Are Possibly Optimal If We Use Hurwicz Criterion, Marina Tuyako Mizukoshi, Weldon Lodwick, Martine Ceberio, Vladik Kreinovich

Departmental Technical Reports (CS)

In many practical situations, for each alternative i, we do not know the corresponding gain xi, we only know the interval [li,ui] of possible gains. In such situations, a reasonable way to select an alternative is to choose some value α from the interval [0,1] and select the alternative i for which the Hurwicz combination α*ui + (1 − α)*li is the largest possible. In situations when we do not know the user's α, a reasonable idea is to select all alternatives that are optimal for some α. In this paper, we describe a feasible algorithm for such a selection.

Lee Kong Chian School Of Business Year In Review 2021-2022, Singapore Management University

SMU Corporate Reports

As Singapore and the world reopens, this has led to changes, especially as people feel safe to travel abroad again. This has impacted us of course. We have seen an 8.9 percent drop in undergraduate applications from our 2022 high. This decline is due in no small part to the relaxation of travel restrictions. However, despite the drop, the quality of applications this year is similar or maybe even slightly better than the year before. In the end, we matriculated 884 students, above our target. This includes 38 scholarship recipients who accepted our offer, representing a record yield. We have …

Predictions Of Indentation Stiffness Of Musculoskeletal Regions Using Ultrasound, Sean Doherty

ETD Archive

Tissue indentation response is an important metric for understanding how different musculoskeletal regions respond to loading and is a function of the tissue’s form. Modem imaging techniques provide information about the internal structures of human tissue. Ultrasound remains one of the most common imaging techniques performed, given its portability and low costs. Prior work and data collection on 100 patients involved the collection of ultrasound images at eight different locations across the musculoskeletal extremities. Given the tissue structure information that the medical imaging provided, it was hypothesized that the mechanical properties of the tissue could be predicted from this data. …

Strengthening Effects Of Carbon Nanotubes And Graphene Nanoplatelets Reinforced Nickel Metal Matrix Composites, Amit Patil

ETD Archive

Carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) with superior mechanical, thermal, chemical, and electrical properties are appealing reinforcements for the fabrication of lightweight, high-strength, and wear-resistant metal matrix composites with outstanding mechanical and tribological performance. The nickel-carbon nanotube composites (Ni-CNT) and nickel-graphene nano-platelet composites (Ni-GNP) were processed using two separate ball milling methods, namely dry ball milling (DM) and solution ball milling (SBM), and then sintered using the spark plasma sintering (SPS) technique. The influence of the premixing process, milling time, reinforcement morphology, and concentration on matrix grain size, microstructure, dispersion in the nickel matrix, mechanical properties, and tribological performance …

Final Master's Portfolio, Marisa Mount

Master of Arts in English Plan II Graduate Projects

The following portfolio project contains four separate pieces of writing produced during the author's MA coursework.

Rad51-Mediated Interhomolog Recombination During Budding Yeast Meiosis Is Promoted By The Meiotic Recombination Checkpoint And The Conserved Pif1 Helicase, Andrew Ziesel, Qixuan Weng, Jasvinder S. Ahuja, Abhishek Bhattacharya, Raunak Dutta, Evan Cheng, G. Valentin Borner Ph.D., Michael Lichten, Nancy M. Hollingsworth

Biological, Geological, and Environmental Faculty Publications

During meiosis, recombination between homologous chromosomes (homologs) generates crossovers that promote proper segregation at the first meiotic division. Recombination is initiated by Spo11-catalyzed DNA double strand breaks (DSBs). 5' end resection of the DSBs creates 3' single strand tails that two recombinases, Rad51 and Dmc1, bind to form presynaptic filaments that search for homology, mediate strand invasion and generate displacement loops (D-loops). D-loop processing then forms crossover and noncrossover recombinants. Meiotic recombination occurs in two temporally distinct phases. During Phase 1, Rad51 is inhibited and Dmc1 mediates the interhomolog recombination that promotes homolog synapsis. In Phase 2, Rad51 becomes active …

The Livingston Survey 2022, S. Anderson, B. Bovino, M. Brown, Thomas Lam, Et Al

Sim Kee Boon Institute for Financial Economics

The 16 participants in the December Livingston Survey weakened their forecasts for real GDP growth, compared with their projections in the June 2022 survey. The forecasters, who are surveyed by the Federal Reserve Bank of Philadelphia twice a year, expect 2.0 percent annualized growth in real GDP during the second half of 2022. They project 0.4 percent annualized growth over the first half of 2023. The forecasters predict that real GDP will continue to decline and reach -1.0 percent annualized growth in the second half of 2023.

Singapore Management University Report To Stakeholders 2021/2022, Singapore Management University

Report to Stakeholders

The title of the annual report, “Our Evolving Garden”, points to how the University continues to develop and progress as “One SMU”. With the world now learning to live with COVID-19 as endemic, the last year has been one in which SMU students have been able to resume many of the activities that contribute towards providing a transformative education. For example, they were able to attend many more events on campus and to travel overseas for internships, exchanges, and community service projects. Faculty too were able to attend academic conferences and meet with educational partners, business connections and research associates …