Digital Commons Network^™

Strategies For Securing Users’ Personal Data Against Security Threats In Mcc Networks, Ijeoma Kingsley Ofuokwu

Walden Dissertations and Doctoral Studies

Lack of security in Mobile Cloud Computing (MCC) networks is likely to have negative consequences. Information security managers are concerned with the lack of security in MCC networks because it is the number one reason for the low implementation of MCC. Grounded in the integrated system theory of information systems, the purpose of this qualitative pragmatic inquiry study was to identify strategies necessary to secure users’ personal data against security threats in MCC networks. The participants comprised four information security managers from two financial technology organizations in Northeastern Massachusetts implementing various strategies to secure their user's data against security threats …

Leadership Development Strategies For Enhanced Corporate Leadership Capability, Amanda J. Wilson

Walden Dissertations and Doctoral Studies

Some business leaders lack leadership development strategies to enhance corporate capability. Without these strategies, business leaders may be over or underspending on leadership training without clear or relevant outcomes. Grounded in the transformational leadership theory, the purpose of this qualitative multiple-case study was to explore leadership development strategies used by businesses to enhance corporate capability. Participants comprised six business leaders from the state of West Virginia who developed leadership strategies for enhanced corporate leadership capability. Data were collected through semi-structured interviews as well as a review of public websites and program documents. Thematic analysis was used to analyze the data. …

Administrators’ Challenges To Provide Sustainable Instruction To Children Of Military Personnel, Pamela Yvette Tucker

Walden Dissertations and Doctoral Studies

Military-connected students (MCSs) face academic challenges because of frequent transitions. During military parents' permanent change in duty station (PCS), MCSs are absent for 15 days or more. PCS-related absenteeism has increased over the last decade, and academic achievement has decreased. This basic qualitative capstone project study examined the challenges of high school administrators from Southeast Asian Pacific Island district schools to provide teachers with systematic professional development that supports sustainable instruction for MCSs during PCS-related absences. The conceptual framework for the study was Hersey and Blanchard's situational leadership theory (SLT). SLT suggests that administrators adopt leadership approaches to combat PCS-related …

Teacher Perceptions Of Instructional Influence On Students’ 21st Century Soft Skills Retention And Transference, Zoraida Wright

Walden Dissertations and Doctoral Studies

Many career and technical education (CTE) programs have moved from face-to-face to virtual internships (VIs) to train students who are expected to enter the job market. The problem was that many graduates of CTE VIs demonstrate 21st century soft skills during VIs, but upon entering the workplace, are unable to demonstrate the same soft skills. The purpose of this generic qualitative study was to explore secondary CTE teachers’ perceptions of how their instruction during VIs influenced students’ 21st-century soft skills to make student skills retainable and transferable; the TPACK conceptual framework was used as a lens for analysis. Semi-structured open-ended …

Teacher Educator And School Administrator Perceptions Of Teacher Preparedness To Implement Culturally Responsive Practice, Gail Olivia Hudson

Walden Dissertations and Doctoral Studies

The number of students from ethnically, culturally, and linguistically diverse backgrounds in K–12 public education settings has increased in the past two decades. However, 80% of teachers in public schools are White and middle-class, which does not mirror the student population. Even though higher education prepares teachers to be culturally sensitive to diverse cultures, more understanding is needed. The purpose of this qualitative exploratory single-embedded case study was to explore teacher educators’ and elementary (K–5) building administrators’ perceptions of preservice and early-career teachers’ preparedness from a university to implement culturally responsive practices for ethnically, culturally, and linguistically diverse students in …

Danish 0–9 School Leader Perceptions Of School Leadership During The Covid-19 Pandemic Shift To Online Learning As Guided By The Seven Fields Of School Leadership, Daniel Martin Palomares

Walden Dissertations and Doctoral Studies

The problem addressed in this study was the gap in the literature pertaining to Danish 0–9 school leader perceptions, experiences, and efforts during the COVID-19 pandemic restrictions during the 2020–2021 shift to online learning, guided by the Danish Ministry of Children and Education’s seven fields of school leadership. The purpose of this basic qualitative study was to explore Danish 0–9 school leader perceptions and experiences of the role of school leadership during the shift from face-to-face to online learning during the 2020–2021 COVID-19 pandemic as guided by the seven fields of school leadership. Edmondson’s psychological safety theory offered a framework …

Ischemic Evaluation And Revascularization In Patients Presenting With Advanced Atrioventricular Block Without Concomitant Acute Myocardial Infarction, Jasmeet Kalsi, John Suffredini, June K Pickett, Mahboob Alam, Waleed Kayani, Xiaoming Jia

The Texas Heart Institute Journal

No abstract provided.

Exploring The Impact Of The Aging Effect On Inferred Properties Of Solar Coronal Mass Ejections, F Regnault, Nada Al-Haddad, Noé Lugaz, Charles J. Farrugia, Bin Zhuang, Wenyuan Yu, A Strugarek

Faculty Publications

In situ measurements of coronal mass ejections (CMEs) when they pass over an interplanetary probe are one of the main ways we directly measure their properties. However, such in situ profiles are subject to several observational constraints that are still poorly understood. This work aims at quantifying one of them, namely, the aging effect, using a CME simulated with a three-dimensional magnetohydrodynamical code. The synthetic in situ profile and the instantaneous profile of the magnetic field strength differ more from each other when taken close to the Sun than far from it. Moreover, out of three properties we compute in …

Management Of Aphids On Winter High Tunnel Crops, Samantha A. Willden, Allison Zablah, Anna Wallingford, Laura L. Ingwell

Faculty Publications

High tunnels offer several benefits to specialty crop growers including crop protection and season extension. Although crops are actively grown in high tunnels during the winter, few management recommendations exist for winter pests that are actively feeding and reproducing in this protected environment. This study evaluated the efficacy of three commercially available predators used for the augmentative biological control of aphids, Adalia bipunctata, Orius insidiosus, and Chrysoperla carnea, in combination with OMRI-approved pesticides labeled for aphids on spinach and strawberry. Pesticides included PyGanic (pyrethrin), Neemix (azadirachtin), and Sil-MATRIX (Potassium silicate). Laboratory and field experiments indicate high survival of biocontrol agents …

New Insights Into Macrophage Polarization And Its Prognostic Role In Patients With Colorectal Cancer Liver Metastasis, Isha Khanduri, Harufumi Maki, Anuj Verma, Riham Katkhuda, Gayathri Anandappa, Shanyu Zhang, Zhimin Tong, Luisa M Solis Soto, Akshaya Jadhav, Ignacio I Wistuba, David Menter, Scott Kopetz, Edwin R Parra, Jean-Nicolas Vauthey, Dipen M Maru

Faculty, Staff and Student Publications

Background: As liver metastasis is the most common cause of mortality in patients with colorectal cancer, studying colorectal cancer liver metastasis (CLM) microenvironment is essential for improved understanding of tumor biology and to identify novel therapeutic targets.

Methods: We used a multiplex immunofluorescence platform to study tumor associated macrophage (TAM) polarization and adaptive T cell subtypes in tumor samples from 105 CLM patients (49 without and 56 with preoperative chemotherapy).

Results: CLM exhibited M2 macrophage polarization, and helper T cells were the prevalent adaptive T cell subtype. The density of total, M2 and TGFβ-expressing macrophages, and regulatory T cells was …

Prognostic Values Of Serum Lactate-To-Bicarbonate Ratio And Lactate For Predicting 28-Day In-Hospital Mortality In Children With Dengue Shock Syndrome, Lien Thi Ho, Truc Huynh Nguyen, Tuyet Kim Nguyen, Ha Thi-Thu Dinh, Thuy Thi-Diem Dinh, Anh Thi-Mai Pham, Viet Do Chau, Tung Huu Trinh, Luan Vo Thanh

Faculty, Staff and Student Publications

This study aimed to assess the clinical utility of blood lactate-to-bicarbonate (L/B) ratio, as a prognostic factor for 28-day in-hospital mortality in children with dengue shock syndrome (DSS), admitted to the pediatric intensive care unit (PICU). This single-center retrospective study was conducted at a tertiary children hospital in southern Vietnam from 2013 to mid-2022. Prognostic models for DSS mortality were developed, using a predefined set of covariates in the first 24 hours of PICU admission. Area under the curves (AUCs), multivariable logistic and Least Absolute Shrinkage and Selection Operator (LASSO) regressions, bootstrapping and calibration slope were performed. A total of …

Obstructive Sleep Apnea And Risk Of Postoperative Complications After Non-Cardiac Surgery

Faculty, Staff and Student Publications

Obstructive sleep apnea (OSA), a common sleep disorder, poses significant challenges in perioperative management due to its complexity and multifactorial nature. With a global prevalence of approximately 22.6%, OSA often remains undiagnosed, and increases the risk of cardiac and respiratory postoperative complications. Preoperative screening has become essential in many institutions to identify patients at increased risk, and experts recommend proceeding with surgery in the absence of severe symptoms, albeit with heightened postoperative monitoring. Anesthetic and sedative agents exacerbate upper airway collapsibility and depress central respiratory activity, complicating intraoperative management, especially with neuromuscular blockade use. Additionally, OSA patients are particularly prone …

Human Papillomavirus And Associated Cancers: A Review, Janiese E Jensen, Greta L Becker, J Brooks Jackson, Mary B Rysavy

Faculty, Staff and Student Publications

The human papillomavirus is the most common sexually transmitted infection in the world. Most HPV infections clear spontaneously within 2 years of infection; however, persistent infection can result in a wide array of diseases, ranging from genital warts to cancer. Most cases of cervical, anal, and oropharyngeal cancers are due to HPV infection, with cervical cancer being one of the leading causes of cancer death in women worldwide. Screening is available for HPV and cervical cancer, but is not available everywhere, particularly in lower-resource settings. HPV infection disproportionally affects individuals living with HIV, resulting in decreased clearance, increased development of …

Mesoscopic Analysis Of Fatigue Damage Development In Asphalt Mixture Based On Modified Burgers Contact Algorithm In Discrete Element Modeling

Faculty, Staff and Student Publications

This study is aimed at examining the mesoscopic mechanical response and crack development characteristics of asphalt mixtures using the three-dimensional discrete element approach via particle flow code (PFC). The material is considered an assembly of three phases of aggregate, mortar, and voids, for which three types of contact are identified and described using a modified Burgers model allowing for bond failure and crack formation at contact. The laboratory splitting test is conducted to determine the contact parameters and to provide the basis for selecting three different load levels used in the indirect tensile fatigue test and simulation. The reliability of …

The Geodynamic Significance Of Continental Uhp Exhumation: New Constraints From The Tso Morari Complex, Nw Himalaya, Anna K. Bidgood, Andrew J. Parsons, Nick M.W. Roberts, Dave Waters, Simon Tapster, Phillip Gopon

School of Geography, Earth and Environmental Sciences

The burial and exhumation of continental crust to and from ultrahigh-pressure (UHP) is an important orogenic process, often interpreted with respect to the onset and/or subduction dynamics of continent-continent collision. Here, we investigate the timing and significance of UHP metamorphism and exhumation of the Tso Morari complex, North-West Himalaya. We present new petrochronological analyses of mafic eclogites and their host-rock gneisses, combining U-Pb zircon, rutile and xenotime geochronology (high-precision CA-ID-TIMS and high-spatial resolution LA-ICP-MS), garnet element maps, and petrographic observations. Zircon from mafic eclogite have a CA-ID-TIMS age of 46.91 ± 0.07 Ma, with REE profiles indicative of growth at …

Channel Prediction For Underwater Acoustic Communication: A Review And Performance Evaluation Of Algorithms, Haotian Liu, Lu Ma, Zhaohui Wang, Gang Qiao

Michigan Tech Publications

Underwater acoustic (UWA) channel prediction technology, as an important topic in UWA communication, has played an important role in UWA adaptive communication network and underwater target perception. Although many significant advancements have been achieved in underwater acoustic channel prediction over the years, a comprehensive summary and introduction is still lacking. As the first comprehensive overview of UWA channel prediction, this paper introduces past works and algorithm implementation methods of channel prediction from the perspective of linear, kernel-based, and deep learning approaches. Importantly, based on available at-sea experiment datasets, this paper compares the performance of current primary UWA channel prediction algorithms …

How Can A Behavioral Economics Lens Contribute To Implementation Science?, Nathan Hodson, Byron J Powell, Per Nilsen, Rinad S Beidas

2020-Current year OA Pubs

BACKGROUND: Implementation science in health is an interdisciplinary field with an emphasis on supporting behavior change required when clinicians and other actors implement evidence-based practices within organizational constraints. Behavioral economics has emerged in parallel and works towards developing realistic models of how humans behave and categorizes a wide range of features of choices that can influence behavior. We argue that implementation science can be enhanced by the incorporation of approaches from behavioral economics. Main body First, we provide a general overview of implementation science and ways in which implementation science has been limited to date. Second, we review principles of …

Management Of Aphids On Winter High Tunnel Crops, Samantha A. Willden, Allison Zablah, Anna Wallingford, Laura L. Ingwell

Faculty Publications

High tunnels offer several benefits to specialty crop growers including crop protection and season extension. Although crops are actively grown in high tunnels during the winter, few management recommendations exist for winter pests that are actively feeding and reproducing in this protected environment. This study evaluated the efficacy of three commercially available predators used for the augmentative biological control of aphids, Adalia bipunctata, Orius insidiosus, and Chrysoperla carnea, in combination with OMRI-approved pesticides labeled for aphids on spinach and strawberry. Pesticides included PyGanic (pyrethrin), Neemix (azadirachtin), and Sil-MATRIX (Potassium silicate). Laboratory and field experiments indicate high survival of biocontrol agents …

Exploring The Impact Of The Aging Effect On Inferred Properties Of Solar Coronal Mass Ejections, F Regnault, Nada Al-Haddad, Noé Lugaz, Charles J. Farrugia, Bin Zhuang, Wenyuan Yu, A Strugarek

Faculty Publications

In situ measurements of coronal mass ejections (CMEs) when they pass over an interplanetary probe are one of the main ways we directly measure their properties. However, such in situ profiles are subject to several observational constraints that are still poorly understood. This work aims at quantifying one of them, namely, the aging effect, using a CME simulated with a three-dimensional magnetohydrodynamical code. The synthetic in situ profile and the instantaneous profile of the magnetic field strength differ more from each other when taken close to the Sun than far from it. Moreover, out of three properties we compute in …

Using Functional Principal Component Analysis (Fpca) To Quantify Sitting Patterns Derived From Wearable Sensors., Rong W. Zablocki, Sheri J. Hartman, Chongzhi Di, Jingjing Zou, Jordan A. Carlson, Paul R. Hibbing, Dori E. Rosenberg, Mikael Anne Greenwood-Hickman, Lindsay Dillon, Andrea Z. Lacroix, Loki Natarajan

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Sedentary behavior (SB) is a recognized risk factor for many chronic diseases. ActiGraph and activPAL are two commonly used wearable accelerometers in SB research. The former measures body movement and the latter measures body posture. The goal of the current study is to quantify the pattern and variation of movement (by ActiGraph activity counts) during activPAL-identified sitting events, and examine associations between patterns and health-related outcomes, such as systolic and diastolic blood pressure (SBP and DBP).

METHODS: The current study included 314 overweight postmenopausal women, who were instructed to wear an activPAL (at thigh) and ActiGraph (at waist) simultaneously …

An Efficient Wheel-Integrated Wireless Power Transfer System Based On High-Permittivity Metasurface, Yu Yao, Maziar Nekovee

School of Engineering, Computing and Mathematics

Efficient wireless power transfer (WPT) systems seamlessly integrated with electric vehicles (EVs) are crucial to their successful massive rollout. This paper proposes a WPT system with a high-permittivity metasurface integrated with a wheel for efficiency enhancement. The single-turn coils with coupling-enhanced rings are explored as transmitter (Tx) and receiver (Rx). The metasurface is composed of high-permittivity elements placed on both surfaces. The symmetric system model ensures bidirectional transmission between EVs and power grids. With the aid of the metasurface, the efficiency of the WPT system is substantially enhanced and maintained within 400 mm.

Characteristic Of Dual Polarization Sentinel-1 For Estimation Of Seawater Intrusion On Kalianda Coast, South Lampung: A Preliminary Study, Choirunnisa Salsabila, Mochamad Firman Ghazali, Ananda Dermawan, Lauditta Zahra, Ni Made Mega Melliana, Mila Aulia

Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments)

Seawater intrusion can increase soil salinity, which occurs due to flooding, evaporation, and land cover changes in coastal areas. This research aims to map and observe the characteristics of seawater intrusion in Way Urang, Kalianda, South Lampung, using Dual-polarization of Sentinel-1 SAR imagery with VV, VH, VV+VH, and (VV+VH)/2 polarization. There were 28 samples used in this research which were divided into two types, GCP (ground control point) and ICP (independent check point). GCP samples are used to create a seawater intrusion estimation model using the regression method, while ICP samples are used to test the validation model using the …

Full Issue

The Thetean: A Student Journal for Scholarly Historical Writing

No abstract provided.

Human Nature And The Integration Of Faith And Reason, Bradley Kime

The Thetean: A Student Journal for Scholarly Historical Writing

In his 1838 Divinity School address, Ralph Waldo Emerson said that "every man is an inlet into the deeps of Reason." Heavily influenced by Hindu Monism, Emerson believed human beings were one with the universal soul the immanent divinity of the natural universe. Because of humanity's divine nature, Emerson saw reason as an intuitive revelation springing from within every individual, while faith was simply a recognition of one's innate intuition. Faith and reason were two sides of the same coin. Emerson's Transcendentalism illustrates how conceptions of faith, reason, and their relationship often rest on underlying beliefs about human nature.

Reading Disasters: Science, Literary Devices, And The Culture Of Reassurance In Children's Nonfiction Literature On Natural Disasters, Emily Willis

The Thetean: A Student Journal for Scholarly Historical Writing

September 21, 1938, dawned chilly but calm on the Northeast coast of the United States. Weather forecasts indicated the possibility for rain and high tides from a storm brewing somewhere over the Atlantic Ocean, but nothing prepared Northeasterners for the nightmare that would be upon them that afternoon. By three o'clock p.m., the "Long Island Express," a category three hurricane, barreled across New York and other parts of the New England coast, causing nea rly $400 million in damages. "While forecasters attempted to stay one step ahead of the storm, they were caught off-guard," states Sean Potter in a vignette …

The Men Who Could Speak Japanese: The Navy Japanese Language School At Boulder, Colorado (1942-1946) And The Legacy Of World War Ii Japanese-Language Officers, Katherine White

The Thetean: A Student Journal for Scholarly Historical Writing

On their last day of class at the US Navy Japanese Language School (USNJLS or JLS), Captain Roger Pineau and his fellow classmates waited in a room on the second floor of the University of Colorado library. They had spent the last eleven months immersed in a rigorous study of the Japanese language, and today their teachers had promised a sample of what they would experience as Japanese-language officers in the Pacific War. The six students sat intently as their conversation sensei (teacher) entered the classroom, removed a Japanese newspaper from his briefcase, placed his pocket watch on the table, …

"Take Every Good": A Study Of The Hidden Trends In The Latter--Day Saint Indian Placement Program, Annie Penrod Walker

The Thetean: A Student Journal for Scholarly Historical Writing

The Latter-day Saint Indian Placement Program unofficially started in 1947 when a seventeen-year-old Navajo girl named Helen John was harvesting sugar beets with her family in Richfield, Utah. Helen had been attending school on the Navajo reservation in Arizona for years, but that summer her father told her that once they returned to the reservation she would have to stay home and work, allowing her younger siblings to have a turn at school. Upset and disappointed, Helen ran off in tears and was overheard by Amy Avery, the wife of the farmer Helen's family was working for. Helen revealed her …

An Enduring Force: The Photography Of Laura Gilpin Among The Twentieth-Century Navajo, Carlyle Schmollinger

The Thetean: A Student Journal for Scholarly Historical Writing

While some artisits travel the world in search of inspiration, Laura

Gilpin found hers in the arid, desert landscape of the southwestern United States. Gilpin had an affinity for the Navajo. In 1968, eleven years before her death, she published the first edition of her seminal work, The Enduring Navajo. A feat in its own right, the collection of photographs and accompanying text was the product of many years spent among the peoples located in the Southwest region of the United States. In the epilogue to her book, Gilpin boldly proclaims her love of the Navajo when talking about the …

"The End Is Near": Pop Culture Adaptations Of Premillennial Themes, Kelsey Samuelsen

The Thetean: A Student Journal for Scholarly Historical Writing

March 1997: Thirty-nine people poison themselves, committing suicide in order to board an alien space ship allegedly trailing the Hale-Bopp Comet. December 2009: A fa iled cure for cancer sparks a pandemic which immediately kills most of the population and leaves the rest ravaged and cannibalistic. January 2000: The turn of the century threatens to crash the world's computers, wreaking havoc on civilized society. These scenarios, a mixture of fabricated and factual, represent the variety of apocalyptic myths in American culture. The popularity of end-of-the-world themes has risen in recent years. Numerous depictions of such events in well-known books, films, …

"Damn The Tyrant's Cause!": Primary Source Analysis Of The Morris Family Letters From 1829 To 1846, Lark Plessinger

The Thetean: A Student Journal for Scholarly Historical Writing

From 1829 to 1846, members of the Morris family wrote a series of letters to their brother Jonathan Morris, who remained in Chorley, England, regarding their experiences immigrating to America. This set of letters only includes the correspondence addressed to Jonathan, but it still provides valuable insights about this transitional, frontier period of American history as witnessed by the Morris family. By analyzing the different concerns voiced in these letters, the social, economic, and political world of those who immigrated to nineteenth-century Ohio comes to life.