Digital Commons Network^™

Distribution And Condition Of Stony Corals In The Veracruz Reef System National Park: A Management Perspective, Mauricio López Padierna

HCNSO Student Theses and Dissertations

The Veracruz Reef System (VRS) is located in the southwestern Gulf of Mexico. It is comprised of 28 coral reefs in various stages of development and conservation. They are protected under the Parque Nacional Sistema Arrecifal Veracruzano National Park created in 1992. There are many threats to the reefs of the VRS, including the Port and city of Veracruz, which hosts half a million inhabitants and Mexico’s oldest active port. The inhabitants of Veracruz have used reef resources for thousands of years, as evidenced in archaeological sites on Sacrificios island, and constructions throughout the city, most notably in the San …

Age And Growth Of Whale Sharks (Rhincodon Typus) Near The South Ari Atoll, Maldives, Cameron T. Perry

HCNSO Student Theses and Dissertations

The whale shark (Rhincodon typus) has a global distribution in warm to warm temperate oceans, and is a species of high conservation concern currently categorized as Endangered on the International Union for Conservation of Nature (IUCN) Red List. Despite its dire conservation status and concerns about the growing number of ecotourism interactions with this species worldwide, relatively little information is available on key aspects of whale shark biology such as growth rates, reproductive rates, survival rates and breeding habitats. In particular, critical information such as age and growth of whale sharks is needed to improve the management and …

Cooperation And Competition Shape Ecological Resistance During Periodic Spatial Disturbance Of Engineered Bacteria, Cortney E. Wilson, Allison J. Lopatkin, Travis J. A. Craddock, William W. Driscoll, Omar T. Eldakar, Jose V. Lopez, Robert P. Smith

Biology Faculty Articles

Cooperation is fundamental to the survival of many bacterial species. Previous studies have shown that spatial structure can both promote and suppress cooperation. Most environments where bacteria are found are periodically disturbed, which can affect the spatial structure of the population. Despite the important role that spatial disturbances play in maintaining ecological relationships, it remains unclear as to how periodic spatial disturbances affect bacteria dependent on cooperation for survival. Here, we use bacteria engineered with a strong Allee effect to investigate how the frequency of periodic spatial disturbances affects cooperation. We show that at intermediate frequencies of spatial disturbance, the …

Angiotensin Receptor Blocker Drugs And Inhibition Of Adrenal Beta-Arrestin-1-Dependent Aldosterone Production: Implications For Heart Failure Therapy, Anastasios Lymperopoulos, Beatrix Aukszi

Chemistry and Physics Faculty Articles

Aldosterone mediates many of the physiological and pathophysiological/cardio-toxic effects of angiotensin II (AngII). Its synthesis and secretion from the zona glomerulosa cells of the adrenal cortex, elevated in chronic heart failure (HF), is induced by AngII type 1 receptors (AT1Rs). The AT1R is a G protein-coupled receptor, mainly coupling to Gq/11 proteins. However, it can also signal through β-arrestin-1 (βarr1) or -2 (βarr2), both of which mediate G protein-independent signaling. Over the past decade, a second, Gq/11 protein-independent but βarr1-dependent signaling pathway emanating from the adrenocortical AT1R and leading to aldosterone production has become appreciated. Thus, it became apparent that …

Power Means Of Matrices, Jose Franco

Mathematics Colloquium Series

In this talk we will study the different ways the power means of positive numbers can be extended to means of positive definite matrices. Then, we will analyze the properties these means satisfy. Among these properties, we will be interested in analytic properties such as monotonicity and convexity. Using these results, we will compare the power means with other interpolations between the Arithmetic-Geometric-Harmonic means.

Twenty Years Of Technology Integration And Foreign Language Teaching: A Phenomenological Reflective Interview Study, Nilsa Becho Sullivan, Kakali Bhattacharya

The Qualitative Report

The evolution of the use of technology in the foreign language classroom has proven to be a challenge. In this paper, we highlight a study whose purpose is to understand how one retired foreign language educator reflected on the ways in which she integrated different modes of technology in her classroom. In this interview study, the participant discussed how technology has evolved in the span of her twenty-year career as a foreign language educator and how she integrated various technologies as they evolved in her classroom. The researchers employed a modified van Kaam method as defined by Moustakas (1994) to …

Chlorophyll Concentration And Optical Absorption Spectra Of Particulate And Dissolved Material, Collected At Several Depths On Deepend Cruises Dp03 And Dp04 From January-December 2016, Chuanmin Hu, Jenifer Cannizzaro, David English

DEEPEND Datasets

The optical absorption spectra from seawater’s particulate and dissolved components can be used to compute the penetration of light to various depths, estimate the proportion of living to non-living particulate matter, assess photosynthetic light availability and the type of phytoplankton present, and the validate of satellite or airborne ocean color measurements. Chlorophyll and phaeopigment concentrations are often used to estimate the amount of phytoplankton present, and to allow extrapolation of in situ fluorometric measurements. Water was collected using a CTD rosette near the surface and from several depths at each sampling station occupied by the DEEPEND cruises DP03 & DP04 …

The Relationship Between Near Shore Hardbottom Exposure And Benthic Community Composition And Distribution In Palm Beach County, Fl, Kristen A. Cumming

HCNSO Student Theses and Dissertations

Anthropogenic changes to the landscape, storm events and sea level rise are contributing to the erosion of beaches leading to an increase of the sediment load in near shore marine environments. Palm Beach, Florida is host to unique near shore hardbottom habitats. These areas are distinct from the vast expanses of surrounding sediments and play and important role of habitat and shelter for many different species. In this study, remotely sensed images from 2000-2015 were used to look at the movement of sediment and how it contributes to exposure rates of near shore hardbottom habitats in Palm Beach, Florida and …

Antecedents Of New Venture Creation Decision In Iranian High-Tech Industries: Conceptualizing By A Non-Teleological Approach, Mehdi Zivdar, Narges Imanipour

The Qualitative Report

Entrepreneurs’ decision-making process is one of the main research topics in entrepreneurship studies. This research aims to conceptualize the antecedents of new venture creation decision in Iranian high tech industries. The research utilizes an innovative non-teleological approach in order to take into account the specific regional context of Iran. Most research into entrepreneurial decision making utilizes teleological approaches; however, these models could not adequately explain the phenomena within the Iranian context. This qualitative study utilized event- based interviews with 20 nascent entrepreneurs. Results from coding, categorizing and validating the research findings, revealed 3 main categories as antecedents of new venture …

Learning To Teach: A Case Study Of Student Teachers’ Practicum And Policy Recommendations, Urip Sulistiyo, Amirul Mukminin, Kemas Abdurrahman, Eddy Haryanto

The Qualitative Report

This qualitative case study was conducted to gather information on the implementation of teaching practicum in order to improve the quality of the program in an English teacher education program at a state-owned university, Jambi, Indonesia. Information was gathered from five recent teacher graduates, five beginner teachers, five school principals, and five teacher educators on their perceptions of English Foreign Language Teacher Education Program (EFLTEP) graduates as beginner teachers. This qualitative study employed a background survey, document analyses and interviews for data collection. Document analyses were used to examine the aims and content of the English teacher education program and …

Exploring Family Change Processes: A Dynamic Qualitative Analysis Of Family Trajectories, Change And Coordination In Child Protection Cases, Ana Teixeira De Melo, Madalena Alarcão

The Qualitative Report

This paper reports an exploratory discovery-oriented study aimed at inspecting change processes and dynamics in families referred by the Courts and Child Protection Services for family assessment in the Integrated Family Assessment and Intervention Model (IFAIM; Melo & Alarcão, 2011, 2013) due to child neglect. The families received support for change during an assessment aimed at facilitating and exploring their potential for change. The parents reported, in quantitative diaries, their family’s experiences and changes inside and outside the sessions. We coded the data with a qualitative coding-scheme emergent from a preliminary qualitative exploration based on grounded theory methods and sensitizing …

Heart Valve Tissue Engineering: Mathematical Modeling For Bioreactor Studies, Manuel Salinas

Mathematics Colloquium Series

Mechanical conditioning has been shown to promote tissue formation in a wide variety of tissue engineering studies, but the underlying mechanisms by which external mechanical stimuli regulate cells and tissues are not fully understood. This is particularly relevant in the area of heart valve tissue engineering (HVTE) due to the intense hemodynamic environments that surround native valves. Some studies suggest that oscillatory shear stress (OSS) caused by steady flow and scaffold flexure play a critical role in engineered tissue formation derived from bone marrow derived stem cells (BMSCs). In addition, scaffold flexure may enhance the transport of nutrients such as …

Composition And Quantification Of Polycyclic Aromatic Hydrocarbons In Deep-Pelagic Fauna, Cruises Dp01 And Dp02 From May 2015 - August 2015, Isabel C. Romero

DEEPEND Datasets

This data set includes the biological PAH (Polycyclic Aromatic Hydrocarbons) data of target species collected during the DP01 (May 1-8, 2015) and DP02 cruises (August 8-21, 2015) in the Northern Gulf of Mexico. The target fish species include Ceratoscopelus warmingii, Chaulidus spp., Diaphus spp., Argyropelecus spp, Lampanyctus alatus, and Sigma elongatum. Also, analysis of shrimp (Acanthephyra purpurea) and cephalopod (Grimalditeuthis bonplandi, Histioteuthis corona, Japetella diaphana) samples were conducted. PAHs were analyzed following modified EPA method 8270D and QA/QC strict protocols. Detection and quantification of PAHs were performed using a gas chromatograph/mass spectrometric detector (GC/MS/MS).

Inventory Of Gulf Oceanic Fauna Data Including Species, Weight, And Measurements. Cruises Dp01 May 1-8, 2015 And Dp02 August 9-21, 2015 R/V On The Point Sur In The Northern Gulf Of Mexico, April Cook, Tracey Sutton

DEEPEND Datasets

This data set includes the biological and environmental data for all of the species collected during the DP01 (May 2015) and DP02 cruises (August 2015). The main gear type used was a 10-m2 Multiple Opening Closing Net and Environmental Sensing System (MOCNESS). The MOCNESS was fitted with 6 nets which were opened according to the following depth scheme: net 0 from the surface to 1500m, net 1 from 1500-1200m, net 2 from 1200-1000m, net 3 from 1000-600m, net 4 from 600-200m, and net 5 from 200m to the surface. Two trawls were conducted at each station sampled to capture diel …

Academic Problem-Solving And Students’ Identities As Engineers, Mirka Koro-Ljungberg, Elliot P. Douglas, Nathan J. Mcneill, David J. Therriault, Christine S. Lee, Zaria Malcolm

The Qualitative Report

Socially constructed identities and language practices influence the ways students perceive themselves as learners, problem solvers, and future professionals. While research has been conducted on individuals’ identity as engineers, less has been written about how the language used during engineering problem solving influences students’ perceptions and their construction of identities as learners and future engineers. This study investigated engineering students’ identities as reflected in their use of language and discourses while engaged in an engineering problem solving activity. We conducted interviews with eight engineering students at a large southeastern university about their approaches to open and closed-ended materials engineering problems. …

Cruise Data For Neuston Net And Paired Bongo Net Tows From 48 Stations In The Northern Gulf Of Mexico From R/V Blazing Seven Cruises Lf2015a And Lf2015b June 2015 And July 2015, Jay R. Rooker, R.J. David Wells

DEEPEND Datasets

Shelf and slope waters in the Deep Water Horizon oil spill (DWHOS) area are known to serve as critical spawning, nursery, and foraging habitat of several important oceanic species including billfishes (e.g. blue marlin, white marlin, sailfish), tunas (bluefin tuna, yellowfin tuna), and other pelagic taxa (swordfish, dolphinfishes). The aim of this component was to further investigate potential ecological effects of the DWHOS on pelagic fishes during the early life period. Larval fishes were sampled from 48 stations in the northern Gulf of Mexico and cruise data was collected at each site including latitude/longitude, date, time and environmental data (sea …

Primary Utricle Structure Of Six Halimeda Species And Potential Relevance For Ocean Acidification Tolerance, Katherine E. Peach, Marguerite S. Koch, Patricia Blackwelder, Debbie Guerrero-Given, Naomi Kamasawa

Marine & Environmental Sciences Faculty Articles

Variations in utricle morphology may be responsible for different tolerances to ocean acidification (OA) within the macroalgal genus Halimeda, an important sediment producer on reefs. However, differences in species’ utricle morphology and their relationship to calcification and crystal formation have not been well articulated. In the present study, we characterized the utricle morphologies of six Halimeda species. Primary utricle ultrastructure was quantitatively and qualitatively compared to tissue inorganic content and crystal microstructure. Morphologies differed across species and several morphometric relationships were revealed. Primary utricle size (r²=0.70) and diffusion pathway length (r²=0.87) had inverse relationships with …

The Current Volume 27 : Issue 18, Nova Southeastern University

Student Newspapers

No abstract provided.

Calcium Transient Assays For Compound Screening With Human Ipsc-Derived Cardiomyocytes: Evaluating New Tools, Neil J. Daily, Radleigh Santos, Joseph Vecchi, Pinar Kemanli, Tetsuro Wakatsuki

Mathematics Faculty Articles

Calcium (Ca2+) plays a central role in regulating many biological processes in the cell from muscle contraction to neurotransmitter release. The need for reliable fluorescent calcium indicator dyes is of vast importance for studying many aspects of cell biology as well as screening compounds using phenotypic high throughput assays. We have assessed two of the latest generation of calcium indicator dyes, FLIPR Calcium 6 and Cal-520 AM for studying calcium transients (CaTs) in induced pluripotent stem cell (iPSC) -derived human cardiomyocytes. FLIPR Calcium 6 and Cal-520 dyes both displayed robust CaTs with a high signal-to-noise ratio (SNR) and were non-toxic …

Teacher Empowerment: A Focused Ethnographic Study In Brunei Darussalam, Shanthi Thomas

The Qualitative Report

Teacher empowerment, as a process that enables teachers’ intrinsic motivation and brings out their innate potential, is of critical importance in modern times. However, the teacher empowerment construct in existing education literature originated in the west, and its dimensions are aligned to the western cultural scenario. The purpose of this study was to understand the behaviours of school leaders, teacher colleagues, students as well as their parents, and themselves, that teachers perceived as empowerment-facilitating and/or empowerment impeding. This study took place in a secondary school in Brunei Darussalam, a private secondary school. This study was designed as a ‘focused ethnography’, …

Comparison Of Three Clinical Tests Of Accommodation To Hofstetter's Norms To Guide Diagnosis And Treatment, Marc Brian Taub

Student Theses, Dissertations and Capstones

Purpose. It has been documented previously that the push up (PU) and pull away (PA) methods overestimate accommodative amplitude (AA), while the minus lens-to-blur (MLB) method underestimates it. It also has been shown that the PU and PA methods produce similar results. We sought to compare data obtained from these three clinically used methods to determine AA in children and young adults with base-line normative data predicted by Hofstetter.

Methods. Ninety healthy subjects (mean 11.7 years, range: 6-36 and 50F/40M), split into two groups, children (mean 9.8 years, range: 6-13 and 38F/22M) and young adults (mean 25.5 years, range: 21-36 …

Educational Program Attributes And Faculty Teaching Behaviors As Predictors Of National Physical Therapy Examination Success, Natonya Frazier-Early

Department of Physical Therapy Student Theses, Dissertations and Capstones

Purpose: To determine the differences between PT program NPTE 3-year ultimate pass rates (3YUPR) based on program length and faculty scholarship. To explore relationships between 3YUPR and quality faculty behaviors. Subjects: A total of 112 CAPTE accredited PT educational programs in the United States and Puerto Rico during 2013. Method: A quantitative design method was used to retrospectively test differences between program and faculty traits and student NPTE 3YUPR using data from the Commission on Accreditation in Physical Therapy Education (CAPTE), PT Annual Accreditation Reports (AAR) and Federation of State Boards of Physical Therapy (FSBPT) score reports. A self-generated faculty …

Going Under The Hood: The Winners And Losers Of Florida's Transportation Network Companies Law, Carlos Ibarcena

Nova Law Review

Florida House Bill 221 was signed into law on May 9, 2017.1 With the enactment of the Bill, Florida joins forty-six other states, and the District of Columbia, in enacting statewide legislation to legalize and regulate transportation network companies (“TNC”), such as Uber and Lyft.

Halmos College Of Natural Sciences And Oceanography Graduate Program Catalog 2017-2018, Nova Southeastern University

Halmos College of Natural Sciences and Oceanography Course Catalogs

No abstract provided.

College Of Optometry Overview 2017, Nova Southeastern University

Health Professions Divisions Course Catalogs and Course Descriptions

No abstract provided.

Horizons Spring 2017, Nova Southeastern University

Horizons

No abstract provided.

2017 First Look, Nova Southeastern University

First Look

No abstract provided.

Spectral Properties Of A Sequence Of Matrices Connected To Each Other Via Schur Complement And Arising In A Compartmental Model, Evan Haskell, Vehbi Emrah Paksoy

Mathematics Faculty Articles

We consider a sequence of real matrices An which is characterized by the rule that A_n−1 is the Schur complement in A_n of the (1,1) entry of A_n, namely −en, where en is a positive real number. This sequence is closely related to linear compartmental ordinary differential equations. We study the spectrum of A_n. In particular,we show that An has a unique positive eigenvalue λ_n and {λ_n} is a decreasing convergent sequence. We also study the stability of A_n for small n using the Routh-Hurwitz criterion.

Nsu Translational Research And Economic Development Fy 2017 Annual Report, Nova Southeastern University

Annual Reports

No abstract provided.

Heath Professions Division Dissertation Guide 2017, Nova Southeastern University

Health Professions Divisions Course Catalogs and Course Descriptions

No abstract provided.