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2021

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Information Needs And Seeking Behaviour Of Library And Information Science Undergraduates During Covid-19 Pandemic In Niger Delta Region Of Nigeria, Lawrence Arumuru Dec 2021

Information Needs And Seeking Behaviour Of Library And Information Science Undergraduates During Covid-19 Pandemic In Niger Delta Region Of Nigeria, Lawrence Arumuru

Library Philosophy and Practice (e-journal)

This study was hinged on the information needs and seeking behaviour of library and information science undergraduates during the covid-19 pandemic in the Niger Delta region of Nigeria. Three questions were raised to put the study in the right perspective. The researcher employed the simple random type of sampling technique used to sample 184 respondents who are 200, 300, and 400 level undergraduates from Library and Information Science schools in the Niger Delta Region of Nigeria. The questionnaire was used as the sole instrument for data collection. The descriptive survey research design was adopted for the study. Data collected were …


Monitoring Photosynthetic Activity Using In Vivo Chlorophyll A Fluorescence In Microalgae And Cyanobacteria Biofilms In The Nerja Cave (Malaga, Spain), Yolanda Del Rosal, Juan Muñoz-Fernández, Paula S.M. Celis-Plá, Mariona Hernández-Mariné, Félix Álvarez-Gómez, Salvador Merino, Félix L. Figueroa Dec 2021

Monitoring Photosynthetic Activity Using In Vivo Chlorophyll A Fluorescence In Microalgae And Cyanobacteria Biofilms In The Nerja Cave (Malaga, Spain), Yolanda Del Rosal, Juan Muñoz-Fernández, Paula S.M. Celis-Plá, Mariona Hernández-Mariné, Félix Álvarez-Gómez, Salvador Merino, Félix L. Figueroa

International Journal of Speleology

The characterization of the most common photosynthetic biofilms in the Nerja Cave by the continuous monitoring of the in vivo chlorophyll a (Chl a) fluorescence and the incorporation of the irradiance as a new environmental variable related to previous studies in the cave, have allowed us to improve our knowledge about the photosynthetic pattern of the biofilms of the cave. Effective quantum yield (ΔF/Fm′) and relative electron transport rate (rETR) were determined during periods of the light, whereas the maximal quantum yield (Fv /Fm) was determined during dark periods. Increases in …


Online Vocal-Health Education Program For Teachers, Tammy Shilling, Heather Verhelle, Julia Johnson Dec 2021

Online Vocal-Health Education Program For Teachers, Tammy Shilling, Heather Verhelle, Julia Johnson

Faculty Publications

No abstract provided.


Exploring Resilience In Exemplary Rural School Superintendents, Silas Gaussoin-Radcliffe Dec 2021

Exploring Resilience In Exemplary Rural School Superintendents, Silas Gaussoin-Radcliffe

Dissertations

Purpose: The purpose of this exploratory phenomenological study was to identify and describe the strategies used by exemplary rural superintendents to maintain personal resiliency based on Everly, Strouse, and McCormack’s (2015) five factors of personal resilience (active optimism, decisive action, moral compass, relentless tenacity, and interpersonal support).

Methodology: This exploratory phenomenological study used purposeful criterion sampling and recommendations from the county superintendents in the identified geographic area. Each of the 8 identified exemplary rural superintendents was interviewed using an instrument aligned to the five factors of personal resilience and their definitions. The researcher collected rich qualitative interview data, that were …


The Importance Of Educational Technology In Teaching Physics Based On A Competency-Based Approach In Higher Education., Durdona Saydazimova Dec 2021

The Importance Of Educational Technology In Teaching Physics Based On A Competency-Based Approach In Higher Education., Durdona Saydazimova

Central Asian Journal of Education

This article presents a comparative analysis of the traditional and competent approach to the importance of educational technologies in teaching physics on the basis of a competency-based approach in technical higher education institutions, the basic concepts of improving physics teaching methods and individual approach.


Trip Based Modeling Of Fuel Consumption In Modern Heavy-Duty Vehicles Using Artificial Intelligence, Sasanka Katreddi, Arvind Thiruvengadam Dec 2021

Trip Based Modeling Of Fuel Consumption In Modern Heavy-Duty Vehicles Using Artificial Intelligence, Sasanka Katreddi, Arvind Thiruvengadam

Faculty & Staff Scholarship

Heavy-duty trucks contribute approximately 20% of fuel consumption in the United States of America (USA). The fuel economy of heavy-duty vehicles (HDV) is affected by several real-world parameters like road parameters, driver behavior, weather conditions, and vehicle parameters, etc. Although modern vehicles comply with emissions regulations, potential malfunction of the engine, regular wear and tear, or other factors could affect vehicle performance. Predicting fuel consumption per trip based on dynamic on-road data can help the automotive industry to reduce the cost and time for on-road testing. Data modeling can easily help to diagnose the reason behind fuel consumption with a …


Leveraging The 1,3-Azadiene-Anhydride Reaction For The Synthesis Of Functionalized Piperidines Bearing Up To Five Contiguous Stereocenters, Jorge Garcia, Jane Eichwald, Jayme Zesiger, Timothy K. Beng Dec 2021

Leveraging The 1,3-Azadiene-Anhydride Reaction For The Synthesis Of Functionalized Piperidines Bearing Up To Five Contiguous Stereocenters, Jorge Garcia, Jane Eichwald, Jayme Zesiger, Timothy K. Beng

Student Published Works

A modular and scalable strategy, which remodels 3-methylglutaric anhydride to 2-oxopiperidines bearing at least three contiguous stereocenters is described. The approach relies on the chemoselective and stereocontrolled annulation of 1,3-azadienes with the anhydride component. The resulting acid-tethered allylic 2-oxopiperidines are then engaged in several selective fragment growth processes, including catalytic denitrative alkenylation, halolactonization, and Vilsmeier–Haack functionalization.


Ecological Risk Assessment For The State-Wide Small Pelagic Scalefish Resource, S. Blazeski, J. Norriss, K. A. Smith, M. Hourston Dec 2021

Ecological Risk Assessment For The State-Wide Small Pelagic Scalefish Resource, S. Blazeski, J. Norriss, K. A. Smith, M. Hourston

Fisheries Research Reports

In July 2021, the Department of Primary Industries and Regional Development convened an ecological risk assessment (ERA) of the fisheries that access the State-wide Small Pelagic Scalefish Resource. The ERA considered the potential ecological impacts of the West Coast Purse Seine Fishery, South Coast Purse Seine Fishery, Purse Seine Development Zones and the recreational fishers who catch small pelagic scalefish. The assessment evaluated the impact of each fishing sector/method on all relevant retained and bycatch species, endangered, threatened and protected species, habitats and the broader environment.


In The Beginning: Foundations Of A Successful Deanship, Neil Fulton Dec 2021

In The Beginning: Foundations Of A Successful Deanship, Neil Fulton

Lincoln Memorial University Law Review Archive

The job of a modern law school dean is demanding and complex. Decanal tenures are increasingly short. Those who take on the work of being a law school dean are asked to accomplish a great deal in a short period of time. As a result, the first year of any decanal tenure is vital. The lessons of experience learned by many deans and foundational ideas of leadership scholars provide guideposts for new deans to chart a course through their first year. This essay explores those ideas for new deans to consider and implement in their own way.


2021-12-20_Michiganoverview_Covidschooloutbreak, Michigan Department Of Health & Human Services Dec 2021

2021-12-20_Michiganoverview_Covidschooloutbreak, Michigan Department Of Health & Human Services

Michigan COVID-19 Outbreak Reports

The School Outbreak Data page was obtained from Michigan's COVID-19 data page: https://www.michigan.gov/coronavirus/0,9753,7-406-98163_98173_102480---,00.html.

This report is created by the Michigan Department of Health & Human Services from data self-reported by local health departments. Data is updated every week.

K-12 School-Related Outbreak Reporting: In accordance with the Council of State and Territorial Epidemiologists' outbreak definition, a K-12 school-associated COVID-19 case (confirmed or probable) is defined as a student, teacher, or staff member physically present in the school setting or participated in a school sanctioned extracurricular activity within 14 days prior to illness onset (or a positive test result) OR …


More Alike Than Different: Student Perceptions Of Academic Librarians By Genders And Subject Areas, Elizabeth Price, Jody C. Fagan Dec 2021

More Alike Than Different: Student Perceptions Of Academic Librarians By Genders And Subject Areas, Elizabeth Price, Jody C. Fagan

Libraries

This study explored differences in how undergraduate students of different genders and academic disciplines perceived academic librarians at a U.S. public university. No evidence indicated differences between students identifying as male or female, and few statistically significant differences were found among four Subject Areas (Arts, Humanities + Social Sciences, Business, Health + Education, and STEM). Our results have implications for local practice though they are not generalizable to other institutions. Despite a lack of significant findings, librarians should continue to explore ways to measure how students of different disciplines perceive academic libraries and/or librarians as valuable to their academic success.


An Examination Of Perceptions Of Intimate Partner Violence Severity Within Same-Sex Compared To Opposite-Sex Couples, Eric K. Frazier Dec 2021

An Examination Of Perceptions Of Intimate Partner Violence Severity Within Same-Sex Compared To Opposite-Sex Couples, Eric K. Frazier

ETD Archive

Background: About 1 in 4 women and 1 in 10 men have experienced intimate partner violence (IPV; CDC, 2019). Although there have been numerous studies on IPV, our knowledge pertains to IPV in heterosexual couples. Although IPV occurs at similar rates in both opposite and same sex couples, studies suggest that individuals are more likely to evaluate IPV in opposite-sex couples as more severe compared to same-sex couples. Therefore, the purpose of this study was to examine college students’ perceptions of IPV in both opposite-sex and same-sex couples. Procedure: The study included 144 participants who read eight vignettes, four of …


Teaching Computer Science Csc 222, Harrison Dekker Dec 2021

Teaching Computer Science Csc 222, Harrison Dekker

Library Impact Statements

No abstract provided.


Cryptococcus Neoformans Melanization Incorporates Multiple Catecholamines To Produce Polytypic Melanin, Rosanna P. Baker, Christine Chrissian, Ruth E. Stark, Arturo Casadevall Dec 2021

Cryptococcus Neoformans Melanization Incorporates Multiple Catecholamines To Produce Polytypic Melanin, Rosanna P. Baker, Christine Chrissian, Ruth E. Stark, Arturo Casadevall

Publications and Research

Melanin is a major virulence factor in pathogenic fungi that enhances the ability of fungal cells to resist immune clearance. Cryptococcus neoformans is an important human pathogenic fungus that synthesizes melanin from exogenous tissue catecholamine precursors during infection, but the type of melanin made in cryptococcal meningoencephalitis is unknown. We analyzed the efficacy of various catecholamines found in brain tissue in supporting melanization using animal brain tissue and synthetic catecholamine mixtures reflecting brain tissue proportions. Solid-state NMR spectra of the melanin pigment produced from such mixtures yielded more melanin than expected if only the preferred constituent dopamine had been incorporated, …


Secret Sharing And Its Variants, Matroids,Combinatorics., Shion Samadder Chaudhury Dr. Dec 2021

Secret Sharing And Its Variants, Matroids,Combinatorics., Shion Samadder Chaudhury Dr.

Doctoral Theses

The main focus of this thesis is secret sharing. Secret Sharing is a very basic and fundamental cryptographic primitive. It is a method to share a secret by a dealer among different parties in such a way that only certain predetermined subsets of parties can together reconstruct the secret while some of the remaining subsets of parties can have no information about the secret. Secret sharing was introduced independently by Shamir [139] and Blakely [20]. What they introduced is called a threshold secret sharing scheme. In such a secret sharing scheme the subsets of parties that can reconstruct a secret …


To Lift Or Not To Lift: An Institutional Ethnography Of Patient Handling Practices, Hans-Peter De Ruiter Dec 2021

To Lift Or Not To Lift: An Institutional Ethnography Of Patient Handling Practices, Hans-Peter De Ruiter

Dissertations

The handling (lifting, mobilizing, moving etc) of patients is an integral part of the carework in health-care institutions. For obvious reasons, this puts healthcare providers at risk for musculoskeletal injuries (MSIs); furthermore the risk of such injuries has been considered an inherent risk of care work. In the last decade a concerted effort has been made to decrease (with the goal of eliminating) caregiver injuries by implementing safe patient handling programs (SPHP). These programs are presented as evidence-based algorithms that require the use of mechanical lifting devices. Institutions implement SPHPs as policies and procedural guidelines to which caregivers must conform. …


Quality Of Life Among Children With Physical Disabilities, Sharron E. Guillett Dec 2021

Quality Of Life Among Children With Physical Disabilities, Sharron E. Guillett

Dissertations

A triangulated descriptive research design was used to examine the relationships between quality of life (QOL), health status and physical disability among children between the ages of 8 and 15. A non-random sample (N = 80) of children with and without physical disabilities and their parents participated in this exploratory study. Children were asked to rank their quality of life from one to ten using a modified version of the Child Health Assessment Ladder (CHASL) (Norton, 1987) and then to discuss the rank they chose. QOL scores did not differ significantly between groups (M = 7 for both groups). Thirty …


Evaluating The Impact Of A Mindfulness Intervention On Mindful Attention And Awareness Resilience To Stress, And Perceived Stress In Newly Licensed Nurses In A Nurse Residency Program, Vicki L. Washington Dec 2021

Evaluating The Impact Of A Mindfulness Intervention On Mindful Attention And Awareness Resilience To Stress, And Perceived Stress In Newly Licensed Nurses In A Nurse Residency Program, Vicki L. Washington

Dissertations

A career in the healthcare profession of nursing provokes significant stress in newly licensed nurses. Previous studies suggested that mindful practice enhanced well-being by bringing awareness to thinking and living in the present moment (being mindful), decreased stress, and enhanced resilience to stress.

The purpose of this study was to evaluate the impact of a mindfulness intervention on mindful attention and awareness, resilience to stress, perceived stress, and health status in newly licensed nurses in a nurse residency program (NRP).


Mansouramycins E–G, Cytotoxic Isoquinolinequinones From Marine Streptomycetes, Mohamed Shaaban, Khaled A. Shaaban, Gerhard Kelter, Heinz Herbert Fiebig, Hartmut Laatsch Dec 2021

Mansouramycins E–G, Cytotoxic Isoquinolinequinones From Marine Streptomycetes, Mohamed Shaaban, Khaled A. Shaaban, Gerhard Kelter, Heinz Herbert Fiebig, Hartmut Laatsch

Center for Pharmaceutical Research and Innovation Faculty Publications

Chemical investigation of the ethyl acetate extract from the marine-derived Streptomyces sp. isolate B1848 resulted in three new isoquinolinequinone derivatives, the mansouramycins E–G (1a–3a), in addition to the previously reported mansouramycins A (5) and D (6). Their structures were elucidated by computer-assisted interpretation of 1D and 2D NMR spectra, high-resolution mass spectrometry, and by comparison with related compounds. Cytotoxicity profiling of the mansouramycins in a panel of up to 36 tumor cell lines indicated a significant cytotoxicity and good tumor selectivity for mansouramycin F (2a), while the activity profile of E ( …


Towers Of Trash: Dissecting India’S Solid Waste Management Crisis, Maya L. Reddy Dec 2021

Towers Of Trash: Dissecting India’S Solid Waste Management Crisis, Maya L. Reddy

Student Theses 2015-Present

This paper explores the complex issue of poor solid waste management in the nation of India. The infamous Ghazipur landfill in New Delhi serves as a focal point of this paper as it provides drastic examples of the consequences of solid waste management systems that do not operate effectively. Drawing on information from various scholarly sources, Chapter 1 discusses the issue of solid waste mismanagement in India and its surrounding quantitative and qualitative data. Chapter 2 highlights the socioeconomic, cultural, and religious aspects of consumption, growth, and waste, specifically in relation to prevailing sociological attitudes on material wealth and luxury. …


Characterization And Interpretation Of Feldspathic Chromite Assemblages (Fcas) In Four Ordinary Chondrites: An Electron Backscatter Diffraction (Ebsd) Study, Kimberly Louisa Maccini Dec 2021

Characterization And Interpretation Of Feldspathic Chromite Assemblages (Fcas) In Four Ordinary Chondrites: An Electron Backscatter Diffraction (Ebsd) Study, Kimberly Louisa Maccini

Dissertations and Theses

Feldspathic Chromite Assemblages (FCAs) are chemically distinctive assemblages rich in Na, Al, and Cr that are found in a variety of chondrites. They consist of concentrations of chromite associated mainly with feldspathic material, either feldspar or the glassy material known as maskelynite. Professor Alan Rubin (2003) has proposed that some FCAs formed by shock melting, but the origin of different types of feldspathic chromite assemblages are unclear and have not been studied with more modern techniques such as Electron Backscatter Electron Diffraction (EBSD).

Here EBSD was used to study FCAs in four metamorphosed ordinary chondrites of different shock stages, including …


Understanding Dyslexia As A Neurological Learning Disability: A Plan For An Instructive Website For Parents And Early Elementary Teachers, Rasma M. Gertners Dec 2021

Understanding Dyslexia As A Neurological Learning Disability: A Plan For An Instructive Website For Parents And Early Elementary Teachers, Rasma M. Gertners

Masters Projects

The learning disability known as “dyslexia” is often misunderstood by parents and educators. Dyslexia is a life-long, neurodevelopmental disorder characterized by a deficit in phonological awareness and processing. Its likely causes are genetic as well as environmental. Other conditions known to co-occur with dyslexia are Speech and Language Disorder, Attention Deficit Hyperactivity Disorder, Autism Spectrum Disorder, memory problems, and others. In order for children with dyslexia to reach their highest reading potential, the disorder must be remediated before age seven or eight using intensive, explicit reading interventions. Teachers and other education professionals, using prescribed screening instruments, can identify phonological awareness …


Cuny York College–Hosted Nasa Stem Outreach Program Graduates Over 30,000 Students – The Legacy Continues Amidst The Covid-19 Pandemic, Nazrul I. Khandaker Dec 2021

Cuny York College–Hosted Nasa Stem Outreach Program Graduates Over 30,000 Students – The Legacy Continues Amidst The Covid-19 Pandemic, Nazrul I. Khandaker

Publications and Research

The NASA MUREP (Minority University Research and Education Project) and SEMAA (Science, Engineering, Mathematics and Aerospace Academy) at York College CUNY (City University of New York), borough of Queens, New York City, recently earned a distinction by graduating over 30,000 underrepresented minority students since 1999 with the culmination of the fall 2021 session! African American students are leading the graduates, followed by Hispanic and Asian students being almost equal in proportion. The primary objective of both MAA (MUREP Aerospace Academy) and SEMAA is getting underrepresented minority students exposure to innovative STEM content and prepare many of them to enter higher …


Localizing Early Epic Material In Pindar’S Sicilian Odes: Epichoric Concerns And Panhellenic Fame, Vasiliki Kousoulini Dec 2021

Localizing Early Epic Material In Pindar’S Sicilian Odes: Epichoric Concerns And Panhellenic Fame, Vasiliki Kousoulini

New England Classical Journal

Pindar’s Sicilian odes composed for Hieron and Chromius are embellished with various mythological narratives that are also encountered in early epic material. I suggest that Pindar not only localizes - to some extent - these originally Panhellenic mythological narratives in order to embed them in the foundation narratives that he constructs for the Sicilian victors but that the poet creates a complex interplay between epichoric and Panhellenic elements within the context of the Sicilian odes. In this way, Pindar creates for Hieron and his newly-founded city a mythical past and legitimizes his right to rule before the eyes of local …


Teachers’ Perceptions About Mathematics In A Socio-Religious Context: A Case From Pakistan, Munira Amirali, Anjum Halai Dec 2021

Teachers’ Perceptions About Mathematics In A Socio-Religious Context: A Case From Pakistan, Munira Amirali, Anjum Halai

Institute for Educational Development, Karachi

This study investigated mathematics teachers’ beliefs about the nature of mathematics and the contributory factors shaping them. A survey of 200 trained and untrained mathematics teachers from public and private schools was carried out in Karachi Pakistan, a context with a strong influence of religion on the socio-cultural practices of the people. The survey was followed by a focus-group discussion with selected teachers and is the focus of this paper. This is a ground-breaking study in a hitherto under-researched socio-religious context.
Teachers across the system showed a strong similarity in beliefs. A commonly held view was that mathematics is created …


Numerical Analysis Of Least-Squares Group Finite Element Method For Coupled Burgers' Problem, Najat Jalil Noon Dec 2021

Numerical Analysis Of Least-Squares Group Finite Element Method For Coupled Burgers' Problem, Najat Jalil Noon

Baghdad Science Journal

In this paper, a least squares group finite element method for solving coupled Burgers' problem in 2-D is presented. A fully discrete formulation of least squares finite element method is analyzed, the backward-Euler scheme for the time variable is considered, the discretization with respect to space variable is applied as biquadratic quadrangular elements with nine nodes for each element. The continuity, ellipticity, stability condition and error estimate of least squares group finite element method are proved. The theoretical results show that the error estimate of this method is . The numerical results are compared with the exact solution and other …


Isolation And Identification Of Some Bacterial Isolates From Soil Contaminated With Crude Oil And Testing Their Effectiveness, Nabila Kridi, Mohammed Said Al-Shater, Mohammed Manhal Al Zoubi Dec 2021

Isolation And Identification Of Some Bacterial Isolates From Soil Contaminated With Crude Oil And Testing Their Effectiveness, Nabila Kridi, Mohammed Said Al-Shater, Mohammed Manhal Al Zoubi

Baghdad Science Journal

Bacterial strains were isolated from oil-contaminated soil, in 2018, these isolates were identified, and with the aim of finding out the ability of these isolates to degrede the oil compounds, the color change of medium which added to it isolates was read by the method of Pacto Bushnell Hans. Then the change in the petroleum compounds was read by gas chromatography, for the most effective isolates. The nine isolated bacterial showed different degrees of color change, and the isolates (Pseudomonas, Bacillus, Micrococcus) outperformed the color change amount (78, 78, 77) %, respectively, compared to the control, and the three isolates …


Impact Of Denial-Of-Service Attack On Directional Compact Geographic Forwarding Routing Protocol In Wireless Sensor Networks, Nasrina M Samir, Maisarah Musni, Zurina Mohd Hanapi, Mohamed Ridzal Radzuan Dec 2021

Impact Of Denial-Of-Service Attack On Directional Compact Geographic Forwarding Routing Protocol In Wireless Sensor Networks, Nasrina M Samir, Maisarah Musni, Zurina Mohd Hanapi, Mohamed Ridzal Radzuan

Baghdad Science Journal

Directional Compact Geographic Forwarding (DCGF) routing protocol promises a minimal overhead generation by utilizing a smart antenna and Quality of Service (QoS) aware aggregation. However, DCGF was tested only in the attack-free scenario without involving the security elements. Therefore, an investigation was conducted to examine the routing protocol algorithm whether it is secure against attack-based networks in the presence of Denial-of-Service (DoS) attack. This analysis on DoS attack was carried out using a single optimal attacker, A1, to investigate the impact of DoS attack on DCGF in a communication link. The study showed that DCGF does not perform efficiently in …


An Experimental Study Of The Server-Based Unfairness Solutions For The Cross-Protocol Scenario Of Adaptive Streaming Over Http/3 And Http/2, Chanh Minh Tran, Tho Nguyen Duc, Phan Xuan Tan, Eiji Kamioka Dec 2021

An Experimental Study Of The Server-Based Unfairness Solutions For The Cross-Protocol Scenario Of Adaptive Streaming Over Http/3 And Http/2, Chanh Minh Tran, Tho Nguyen Duc, Phan Xuan Tan, Eiji Kamioka

Baghdad Science Journal

Since the introduction of the HTTP/3, research has focused on evaluating its influences on the existing adaptive streaming over HTTP (HAS). Among these research, due to irrelevant transport protocols, the cross-protocol unfairness between the HAS over HTTP/3 (HAS/3) and HAS over HTTP/2 (HAS/2) has caught considerable attention. It has been found that the HAS/3 clients tend to request higher bitrates than the HAS/2 clients because the transport QUIC obtains higher bandwidth for its HAS/3 clients than the TCP for its HAS/2 clients. As the problem originates from the transport layer, it is likely that the server-based unfairness solutions can help …


Stability And Mechanical Properties Of W1-X Mox B4.2 (X=0.0-1.0) From First Principles, Weiguang Gong, Rui Xu, Xuecheng Shao, Quan Li, Changfeng Chen Dec 2021

Stability And Mechanical Properties Of W1-X Mox B4.2 (X=0.0-1.0) From First Principles, Weiguang Gong, Rui Xu, Xuecheng Shao, Quan Li, Changfeng Chen

Physics & Astronomy Faculty Research

Heavy transition-metal tetraborides (e.g., tungsten tetraboride, molybdenum tetraboride, and molybdenum-doped tungsten tetraboride) exhibit superior mechanical properties, but solving their complex crystal structures has been a long-standing challenge. Recent experimental x-ray and neutron diffraction measurements combined with first-principles structural searches have identified a complex structure model for tungsten tetraboride that contains a boron trimer as an unusual structural unit with a stoichiometry of 1:4.2. In this paper, we expand the study to binary MoB4.2 and ternary W1-xMoxB4.2 (x=0.0-1.0) compounds to assess their thermodynamic stability and mechanical properties using a tailor-designed crystal structure search method in conjunction with first-principles energetic calculations. Our …