bluuebunny/crossref_metadata_2025 huggingface dataset:
The impact of place-based pedagogy on teachers' professional identities, instructional decisions, and collaborations
Authors:   , Sheerman Julie
Published: April 2021

This design study uses a design-based, formative approach to consider teachers' understanding and use of place-based pedagogical practices. The study focuses on teachers' awareness, understanding and use of place as they implemented classroom instruction and built a professional development experience for colleagues. The research spans three months as the team of six teachers (colleagues at a local district) planned, implemented, and reflected on place-based pedagogical shifts. At the heart of the research is the question of how a place-based instructional perspective impacts teaching and professional growth. Ultimately, findings suggest that this group, both collectively and individually, has come to value place as it affects meaningful understanding. Not satisfied with strictly textbook-driven instruction, this team has developed ways to expand school walls, create meaningful experiences for educational colleagues and secure community partnerships valuable to all aspects of this professional growth. These teachers believe that understandings of the importance of place will transcend course titles and school boundaries in order to actively engage learners.
Decision-making involvement, self-efficacy, and the relationship to transition readiness in youth with sickle cell disease
Authors:   , Varty Maureen
Published: April 2021

Transition from pediatric to adult healthcare settings poses significant risks to morbidity and mortality for adolescents and young adults with sickle cell disease. Increasing transition readiness, the acquisition of disease-specific knowledge and self-management skills, has been proposed as strategy to improve health outcomes for adolescents and young adults (AYA) after transition. To date, few studies have looked at factors that may influence transition readiness, a measure of disease-specific knowledge and self-management, in AYAs with sickle cell disease. This limits healthcare providers' and researchers' abilities to develop interventions specific to the unique needs of the population. This dissertation study examined the relationships between decision-making involvement, self-efficacy of sickle cell disease self-management, and transition readiness in AYAs with sickle cell disease prior to transition to adult healthcare settings. This study found that higher levels of expressive behaviors such as sharing opinions and ideas in decision-making were associated with higher levels of AYA healthcare responsibility. Self-efficacy was positively associated with transition readiness but inversely related to AYA healthcare responsibility. Parent involvement was negatively associated with AYA healthcare responsibility. Future research interventions that increase AYA involvement in decision-making regarding disease management, increase self-efficacy, and safely reduce parent involvement may positively influence their capacity for self-management.
Elementary students' understanding of fractions with dynamic technology
Authors:   , Yeo Sheunghyun
Published: April 2021

This study examines students' mathematical strategies within a novel technological environment designed to support understanding of relationships between quantities and adjustable measuring units. In particular, 30 elementary students (grades 3-5) engaged in a series of fraction-as-measurement tasks to provide a cross-sectional snapshot of how they used a 'dynamic virtual ruler' that could be continuously dilated. Screencast recordings were collected from a task-based clinical interview and analyzed to investigate children's mathematical actions and mathematical ideas. Students' strategy patterns were characterized using four distinct types (Not Attending, Estimating, Determining, and Commeasuring) based on their solution strategies. In addition, I attended to their change of strategy types depending on the characteristics of the tasks (within the same task series, across task series). I also articulated possible mechanisms for changing strategies across the tasks from both instrumental and semiotic approaches. My findings provide theory-driven, empirically-tested set of tasks that can be used to introduce fractions is an alternative way in elementary mathematics classrooms, and eventually drawing insight for students to use dynamic technology meaningfully.
Predictive measures to identify target skill sets necessary for completion of future teachers in teacher preparation program
Authors:   , Hepler Brandy Lee
Published: April 2021

Effective teachers are those who can create a classroom climate which meets the needs of the students (Darling-Hammond, 2009; Hart and Hodsen, 2004). In an attempt to identify preservice teachers who can create this type of classroom, Missouri added a workplace inventory, the Missouri Educator Profile (MEP), to their required battery of teacher preparation program (TPP) entrance assessments between the years of 2013 and 2018. Theoretically, students who scored similarly to the normed teacher group would perform similarly to those proficient teachers in the classroom during practicum as well. While the MEP is still available for TPP use, it is no longer a requirement. The purpose of this mixed methods study is to examine the perceptions of the constructs of quality teachers through the lens of current practicing educators in a Missouri Teacher Preparation Program and to discover if indicators on the MEP are predictive of performance evaluation scores. The results of this study may have the potential to either persuade or dissuade Missouri TPPs to utilize the MEP.
Explainable pattern modelling and summarization in sensor equipped smart homes of elderly
Authors:   , Jain Akshay
Published: April 2021

In the next several decades, the proportion of the elderly population is expected to increase significantly. This has led to various efforts to help live them independently for longer periods of time. Smart homes equipped with sensors provide a potential solution by capturing various behavioral and physiological patterns of the residents. In this work, we develop techniques to model and detect changes in these patterns. The focus is on methods that are explainable in nature and allow for generating natural language descriptions. We propose a comprehensive change description framework that can detect unusual changes in the sensor parameters and describe the data leading to those changes in natural language. An approach that models and detects variations in physiological and behavioral routines of the elderly forms one part of the change description framework. The second part comes from a natural language generation system in which we identify important health-relevant features from the sensor parameters. Throughout this dissertation, we validate the developed techniques using both synthetic and real data obtained from the homes of the elderly living in sensor-equipped facilities. Using multiple real data retrospective case studies, we show that our methods are able to detect variations in the sensor data that are correlated with important health events in the elderly as recorded in their Electronic Health Records.
Is the grass really greener? A qualitative study of teacher reflections on their decision to migrate from small rural districts to larger school districts
Authors:   , Jurkowski Deanna L.
Published: April 2021

Teacher retention in rural schools continues to be an area of concern. This qualitative study examines why teachers migrate from small, rural school districts to teach in larger districts by interviewing teachers who have already made the move and who have taught in both environments. It also shares the perceptions of teachers as they reflect on their experience in the small district as well as how they now feel about their decision to leave the small rural district. Findings indicate that teachers look back fondly at their time in small rural schools and, while they do not regret their decision to leave, they do think more teachers should have that experience. Teachers discussed the similarities and differences of the district sizes and gave their personal reasons for leaving. Findings reveal teachers primarily leave small rural districts for financial concerns and enjoy a smaller workload at the secondary level in the larger districts. Workload at the elementary level seemed to be similar. Recommendations for small rural school district leaders are presented.
Imaging-based customization of lattice structures for biomedical applications
Authors:   , Ma Xuewei
Published: April 2021

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Synovial joints can provide movement and articulation, however, with overuse, aging, and trauma, joint replacement surgeries may be needed. Commercially available joint reconstruction implants have undergone great improvement during the past decades. Nevertheless, existing solutions using available implant designs and materials have limitations that lead to potential failure, particularly with young active patients. Bone cement and stress shielding have been identified as the major reasons for premature artificial joint failures. A breakdown of the cement may happen and revision surgery may be needed because of the aseptic loosening. The stress shielding problem is caused by the significant mismatch of stiffness properties between the patient trabecular bones and metallic implant materials for joint replacement surgeries. This research introduces a novel method to develop customized lattice structures with graded properties according to the mechanical properties derived from clinical Computed Tomography (CT) scan of the bone. Various lattice design variables are being analyzed for their effects on mechanical performance and geometrical features needed for biological fixation and manufacturability. The introduced mathematical models and techniques in the proposed work facilitate generic direct digital design and manufacturing of effective customized lattice structures with graded properties for joint reconstruction applications.
A comparative numerical study on the failure evolution at different simulation scales
Authors:   , Su Yu-Chen
Published: April 2021

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] In computational mechanics, different numerical approaches and simulation scales may lead to different results. It is because each approach has its own solution scheme feature, such as the governing equation, forcing function, and integration algorithm, for the specific scale including the nanoscale, mesoscale, and macroscale. Recently, a particle method that is the material point method (MPM) has become a popular research topic at macroscale due to its advantage combining the Eulerian and Lagrangian descriptions. However, the MPM has not been evaluated in a systematic manner for the fully coupled thermodynamic fluid-structure interaction (FSI) cases. Since the constitutive models and heat transfer in solid and fluid materials are quite different, a fully coupled computational scheme is designed in this dissertation for simulating the FSI with the MPM, in which the governing equations for both solid and fluid material points are related to each other. Additionally, the MPM has been upgraded to the generalized interpolation MPM (GIMP), also described in this work, for solving the problems with large deformation. At nanoscale, the object is usually divided by atoms or molecules. Therefore, another computational particle method, molecular dynamics (MD), has been widely utilized for simulating the movements of atoms or molecules. Although MD is an accurate tool at nanoscale, it would cost numerous computational resources. To obtain similar nanoscale information with less cost, a developed coarse-grained MD (CG-MD), which traverses the time and spatial scales, is introduced, verified, and validated in this dissertation. Although the MPM (or GIMP) and MD both belong to particle methods, their forcing functions are different, namely, they are continuous and discrete forcing functions for MPM and MD, respectively. With these similarity and difference, a series of mechanical simulations involving large deformation by using the GIMP, MD, and CG-MD were conducted and discussed in this dissertation to investigate the failure evolution at different simulation scales.
A socioecological perspective : the "ups and downs" of living with type 2 diabetes among working adults in the rural south
Authors:   , Glenn Lynn E.
Published: April 2021

Persons with higher patient activation levels are more likely to engage in preventive health behaviors. This qualitative study addressed a population that may be particularly vulnerable to poor diabetes outcomes: rural, working adults with type 2 diabetes (T2 DM) with low levels of patient activation. This study sought to gain a better understanding of the individual, interpersonal, health system, and community spheres of influence on engagement in diabetes self-management and recommended preventive health services among rural, working adults. A socioecological approach, based on Fisher's (2005) Resources and Supports for Self-Management Model, guided the study. The Patient Activation Measure (PAM-10) was used to identify individuals with low patient activation. Participants (N = 20) had PAM-10 scores less than 75 (M = 59.4) and were predominately African American (n = 12) and female (n = 14), earning incomes less than $50,000 (n = 13). The overarching theme, "ups and downs" of living with diabetes, emerged from the data. Four other major themes emerged: "the struggle", "you don't talk about it", "diabetes is not the priority", and "we're lucky to have what we have". Most participants had social support, employer health benefits, and a trusting, satisfactory relationship with health care providers. However, a lack of equitable workplace and community resources may have contributed to lack of engagement in diabetes self-management and preventive health services.
How financial decision-making changes when a marriage ends : evidence from the 1992-2016 health and retirement study
Authors:   , Xu Chen
Published: April 2021

Transitioning from being married to divorced or widowed is difficult, financially as well as emotionally. Individuals who had left money matters to their partners during marriage enter a period of decreased financial control after marital dissolution and need to build their capacity to manage their own finances. This research used the 1992-2016 Health and Retirement Study (HRS) to investigate the following questions: Compared to a marriage's financial decision maker, how does the non-decision maker assume financial control post-marriage and change asset allocation and wealth accumulation over time? Who loses out by remaining uninvolved in a marriage's financial decision-making? Descriptive analyses and a linear mixed regression model were used to explore whether, after becoming divorced or widowed, net worth is higher for financial decision makers than non-decision makers. A similar analysis was performed on the proportions of risky assets held in investment portfolios, examining whether proportions are higher for the decision makers. The results showed that divorce and widowhood were detrimental to financial health no matter a person's attributes. However, impacts disproportionately affected some groups, including respondents who were non-financial decision makers during marriage. Gender, race, and level of education also influenced how much marital dissolution impacted post-marriage asset allocation and wealth accumulation. The findings suggest that individual investors, financial planners, and researchers would benefit from figuring out how to design collaborative, responsive financial plans that enhance typically uninvolved persons' decision-making skills and adapt to life changes.
A phenomenological study of gifted cross-cultural kids at an international school : exploration of intersecting identities
Authors:   , Jaeger Seth
Published: April 2021

There are several common characteristics between cross-cultural students and gifted students (Gallagher, 2019; Sheard, 2008). At the same time, there is limited research into practices of international schools when identifying and supporting these highly-mobile gifted students (Gallagher and Curtain, 2017; Robinson, 2006). This lack of evidence suggests that many international schools do not cater for the needs of culturally and linguistically (CLD) gifted students by offering tailored programs for differentiation. Framed within the Third Culture Kid (TCK) identity construct, this phenomenological study investigates the experiences of identified gifted students who are being educated in an elite American-curriculum international school in South America. Utilizing qualitative data, this study seeks to answer the following question: how do gifted Cross-Cultural Kids understand the intersection of their gifted and cross culture identities? This study contextualizes that question inside the organizational environment of the school that used selection criteria based on the Cognitive Abilities Test (CogAT), the Measures of Academic Progress (MAP), and the Renzulli Scales for Rating the Behavioral Characteristics of Superior Students (RSRBCSS) for a gifted program. Through maximum variation sampling, 9 gifted third-culture students from middle and high school who have spent a portion of their academic careers in international schools were selected for interviews.
Media literacy education in higher education policy : pedagogical choices and learning outcomes
Authors:   , Mitchell Brad
Published: April 2021

This study proposes a participatory pedagogical framework founded on critical thinking as a method for analysis, reflection, and creative production of media through an understanding of the ways in which media literacy is being taught in higher education institutions in the United States. A qualitative design was utilized that included techniques of content and ethnographic analysis to focus on shared patterns across a sample of higher education courses in the U.S. containing elements of media literacy instruction. This study has found inconsistencies in the pedagogical approaches being utilized, a misunderstanding of the critical thinking and inquiry-based learning methods required for a critical field such as media literacy, and the lack of administrative oversight or policy support as key factors contributing to the discrepancies in media literacy's instruction and learning outcomes. Implications include recommendations for the field to consolidate theoretical frameworks, modifications to teaching, and policy and administrative advocacy efforts.
Comprehensive approach to dietary inclusion of high oleic soybean oil in monogastrics
Authors:   , Peckman Tylan
Published: April 2021

The banning of partially hydrogenated oils in food processing by the FDA has led to a search for alternative oil sources with a decreased potential for oxidation. While marketed and founded for use in the food industry, it is only a matter of time before this oil source makes its way into the livestock feed sector. Novel feed ingredients and different feed ingredient processing methods can vary the fatty acid supply in diets. Thus, when formulating diets, due to the potential effects on animal performance and the downstream effects on fresh meat properties, nutritionists must consider possible alterations in the fatty acid profile of a diet. ...
The role of hepatocellular eNOS in NAFLD development and hepatic mitochondrial adaptations to exercise
Authors:   , Cunningham Rory P.
Published: April 2021

Whole body loss of endothelial nitric oxide synthase (eNOS) worsens hepatic mitochondrial function and exacerbates nonalcoholic fatty liver disease/steatohepatitis (NAFLD/NASH) development and progression. However, the precise role of eNOS in hepatocytes in the contribution to NAFLD has not been established. Here, we use gain- and loss- of-function approaches including a hepatocyte-specific eNOS knockout mouse model (eNOShep-/-), and lifestyle interventions (diet and exercise), to investigate the role of hepatocellular eNOS in NAFLD/NASH development and hepatic mitochondrial adaptations to exercise. Ablation of hepatocellular eNOS via genetic and viral knockout exacerbated hepatic steatosis and inflammation, decreased hepatic mitochondrial fatty acid oxidation and respiration, and impaired mitophagy. Conversely, overexpressing hepatocellular eNOS via viral approaches increased hepatocyte respiration, markers of mitophagy, while attenuating NASH progression. Interestingly, these detriments were not rescued by BNIP3 overexpression or nitric oxide (NO) donors in eNOS deficient hepatocytes. In addition, elevated H2O2 emission and hepatic steatosis in eNOShep-/- mice was completely ablated with 10 weeks of voluntary wheel running exercise. Interestingly, eNOShep-/- male mice had a blunted exercise-induced increase in hepatic fatty acid oxidation. eNOShep-/- mice also had impaired markers of energy sensing ability of the cell and attenuated activation of the autophagy initiating factor ULK1. While mitochondrial respiration and markers of mitochondrial content were not increased with exercise, female mice showed markers of mitochondrial biogenesis. Collectively, these data uncover the important and novel role of hepatocellular eNOS in exercise-induced hepatic mitochondrial adaptations, and help to further the understanding behind the mechanistic role of eNOS in NAFLD development.
A multiple case study of female students' academic self-efficacy while participating in a middle school robotics program
Authors:   , Davis Carey
Published: April 2021

An instructional focus on Science, Technology, Engineering, and Math (STEM) is a current popular educational due to the widespread need for skilled workers in these growing fields. Compounding this labor shortage is the fact that female students and workers are underrepresented in STEM subjects. The purpose of this study was to examine the experiences of female middle school students participating in school-based robotics programs to gain a deeper understanding of the relationship between gender beliefs and academic self-efficacy related to STEM subjects. The results of this study were organized into the theme of experience, influence, coaching, impact, and student descriptors. Contributing factors in the decision to either remain in robotics or leave the program were noted in the category of influence. For the most part, coaching strategies aligned with the idea of the coach as facilitator and schools varied in how they attracted new students. Impact was divided into the coded impact areas of skills, long term, careers, and post-secondary impacts. The theme of student descriptors applied any time coaches and students described students or themselves in specific characteristics, traits, or behaviors. The majority of observations regarding specific gender-related behavior fell into this theme. The data gained in this study contributed information to the field of study in the areas of significance to the field of study, recommendations for schools, and suggestions for further research. The results indicated that individual gender schema is well-established by the middle school years, and it is a transformative moment in life when one must choose what to do with that knowledge. Based on the findings of this study, school districts should fully support robotics programs, focus on mentorship, and expand opportunity while eliminating obstacles for students. First, research should be conducted to determine where gender schema comes into play at the elementary level. Second, research should be conducted to determine what factors students use choosing between robotics and other activities in middle school. Third, schools that are experiencing great success at producing students who enter STEM careers should be studied.
Leveraging large scale beef cattle genomic data to identify the architecture of polygenic selection and local adaptation
Authors:   , Rowan Troy
Published: April 2021

Since the invention of the first array-based genotyping assay for cattle in 2008, millions of animals have been genotyped worldwide. Leveraging these genotypes offers exciting opportunities to explore both basic and applied research questions. Commercial genotyping assays are of adequate variant density to perform well in prediction contexts but are not sufficient for mapping studies. Using reference panels made up of individuals genotyped at higher densities, we can statistically infer the missing variation of low-density assays through the process of imputation. Here, we explore the best practices for performing routine imputation in large commercially generated genomic datasets of U.S. beef cattle. We find that using a large multi-breed imputation reference maximizes accuracy, particularly for rare variants. Using three of these large, imputed datasets, we explore two major population genetics questions. First, we map polygenic selection in the bovine genome, using Generation Proxy Selection Mapping (GPSM). This identifies hundreds of regions of the genome actively under selection in cattle populations. Using a similar approach, we identify dozens of genomic variants associated with environments across the U.S., likely involved local adaptation. Understanding the genomic basis of local adaptation in cattle will enable select and breed cattle better suited to a changing climate.
The precision of retrieving temporal information : behavioral and electrophysiological studies
Authors:   , Scofield John E.
Published: April 2021

The knowledge of when an event took place provides benefits to episodic memory, such as distinguishing among multiple traces and learning event sequences. As a tool for understanding memory, time is appealing given its ever-changing quality, and the ease with which it is targeted at retrieval. Whereas studies of episodic retrieval typically employ categorical measures of retrieval, characterizing a continuous feature such as time warrants measures sensitive to the precision of retrieved information. Through four experiments, we adapted a paradigm for assessing the fine-grained precision of retrieval to understand the nature of judging the time at which a memory was encoded. Subjects studied a series of pictures and were subsequently tested on when they previously studied items. Temporal judgments were less accurate with passing time, with negligible guessing. Neurally, ERP amplitudes in left parietal electrodes tracked the precision of temporal judgments, with higher ERP amplitudes associated with better precision. Additionally, frequency power in both the alpha and theta bands were associated with temporal precision. Finally, while testing spatial retrieval, a correspondence emerged between spatial and temporal precision on a trial to trial basis, but a dissociation was found in which the recency effects found in temporal judgments was not present in spatial judgments. Together, these findings elucidate the role of time and space in episodic memory retrieval.
The transition experience of faculty members into academic leadership
Authors:   , Qazi Matin
Published: April 2021

The purpose of this case study was to understand the lived experiences of faculty members as they transitioned into the academic leadership role of chair. The case study design was used to provide an intensive bounded analysis of the real-life transition experiences of new chairs. Seven new chairs provided data through two interviews each and documents including their resumes, calendars, and appointment letters. By bounding the case study to the University of Missouri, the data provided a rich dataset which captured the collective experience of transitioning into academic leadership, the complexities of their transitions, and how they navigate the transitional challenges. Three primary themes emerged from the data: Theme I: Transition is a Multifaceted Departure, Theme II: Leadership is Interpersonal, and Theme III: Chairs are Finding their Way. I delineated the collective experience of chairs at the University of Missouri to leadership. I reflected their strategies to navigate this path and discussed the resources that are provided to support them along the way. This increased understanding of the transition process and its associated challenges will improve the policy and practice in the appointment of department chairs, and it will inform perspective chairs of the obstacles that other chairs have experienced. The major policy implications of this study are that earlier appointment of chairs provides more time to prepare for the role and allows greater time to design a succession plan with collaborating predecessors. In addition, the leadership should provide need-based support system on the required competency areas for incoming chairs.
Black women's narratives of resilience through vicarious incarceration and reintegration
Authors:   , Hairston Teah Monique
Published: April 2021

Systemic racism has resulted in the disproportionate imprisonment of Black people. With Black men constituting a large percentage of incarcerated bodies, many Black women (44 [percent])--mothers, wives, sisters, etc.--will experience vicarious incarceration. This research examines the ways this population, as caretakers and supporters of their incarcerated loved, ones manage resilience in their daily lives as they navigate a racist, sexist society. Ten women were interviewed about their experiences with vicarious incarceration and reentry. I conclude that the women manage resiliency largely through the support of other Black women and community-family, who--in many instances--are also experiencing vicarious incarceration and/or other racial stress and trauma. Findings provide implications for the need for effective resources, more specifically, culturally-informed, culturally-relevant resources--to assist Black communities with healing from the effects of incarceration, and to prevent and intervene in the intergenerational cycles of criminal justice entanglement.
Manual De Praticas Em Educação Física Na Educação Profissional E Tecnológica Utilizando O Aplicativo Gratuito Efe – Eptfis
Authors: Viana Valderi Nascimento , Fecury Amanda Alves , Oliveira Euzébio de , Dendasck Carla Viana , Dias Claudio Alberto Gellis de Mattos
Published: April 2021

O aplicativo, EFE-EduFisEPT, age como suporte para as atividades escolares de educação física, utilizando a pedagogia histórico-critica ocorre o confronto dos saberes científicos do professor com os saberes empíricos dos alunos, ocasionando o desenvolvimento de uma nova visão e atuação em sociedade. O objetivo deste manual é orientar o docente de Educação física acerca do conteúdo e práticas para aulas de educação física em EPT e quanto a funcionalidade do aplicativo gratuito EFE – EPTFis. Com sua interface simples, o uso do aplicativo se torna fácil e com funcionalidades intuitivas. Este produto educacional existe como suporte para que o professor desenvolva uma educação física mais crítica, que entenda o aluno além do ser biológico, ou seja, um ser social, político, cultural e histórico. Em que cada aula, o aluno poderá compreender que o conteúdo apresentado está ligando a várias dimensões da realidade, contribuindo para uma visão de sociedade baseada em valores e atitudes para o objetivo comum: conhecimento para gerar menos exclusões e discriminações.
I Refugee: Memories / Yo refugiado: Memorias
Authors: Garza Alicia
Published: April 2021

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Непосредственная имплантация с немедленной функциональной нагрузкой временными несъемными зубными протезами в концепции «all-on-6» при тотальной реабилитации стоматологического пациента
Authors: Рубникович С.П. , Хомич И.С.
Published: April 2021

Цель исследования. Продемонстрировать возможность быстрой тотальной функциональной и эстетической реабилитации стоматологического пациента несъёмными временными конструкциями зубных протезов с винтовой фиксацией с уровня имплантатов, установленных в концепции “all-on-6”.
Объекты и методы исследования. На клиническом примере продемонстрировано восстановление функции и эстетики стоматологического пациента временными несъёмными конструкциями зубных протезов с опорой на дентальные имплантаты с винтовой фиксацией. Зубные протезы были изготовлены с применением интраорального сканирования и аддитивных технологий из bis-GMA полимера.
Результаты исследования и их обсуждение. Удаление несостоятельных зубов и установка дентальных имплантатов проводились одномоментно, но в два последовательных этапа, в связи с пожеланиями пациента – сначала на верхней, потом на нижней челюсти с интервалом в несколько дней. Временные конструкции из полимера (3D печать) с винтовой фиксацией с уровня имплантатов с полной функциональной нагрузкой были изготовлены в течение двух дней после имплантации и корректировались после фиксации нижнего временного протеза с опорой на имплантаты для определения оптимального соотношения челюстей. С момента обращения пациента до фиксации временных протезов на верхней и нижней челюсти прошло 7 дней. Замена временных конструкций несъемных протезов на постоянные из диоксида циркония с винтовой фиксацией планируется через 2,5 месяца со дня установки имплантатов.
Заключение. Быстрая нетравматичная тотальная реабилитация стоматологических пациентов временными несъёмными конструкциями зубных протезов с опорой на дентальные имплантаты с винтовой фиксацией с уровня имплантатов по методике “all-on-6”, изготовленными при помощи внутриротового сканирования и аддитивных технологий демонстрирует их высокую эффективность.
PERANCANGAN ALAT PENGERUK GARAM MENGGUNAKAN SISTEM BLADE DOZER DAN CONVEYOR
Authors: Ulfiyah Laily
Published: April 2021

Pulau Madura merupakan salah satu penyokong kebutuhan garam nasional, dan proses panen garam masih dilakukan secara tradisional sehingga produksi garam masih kurang untuk memenuhi kebutuhan garam nasional. Perancangan dan pembuatan alat pengeruk garam untuk membantu proses panen garam merupakan salah satu cara mengatasi hal ini. Alat pengeruk garam ini dirancang dengan memanfaatkan fungsi blade saat mengeruk dan conveyor  yang digerakkan oleh mesin Honda Astrea Grand 100cc untuk membantu garam masuk ke penampung. Sistem kerja alat ini mengeruk, menampung dan langsung . Alat ini mampu mempercepat proses panen garam sebesar 100% lebih daripada dengan pengeruk manual sekaligus menghemat tenaga.
Preparation and Characterization of Immobilized Molybdenum Complex on Pillared Montmorillonite K-10
Authors: Harun Farah Wahida , Mahamat Nor Siti Balkis , Othman Siti Salhah
Published: April 2021

This study was carried out to immobilize molybdenyl (VI) acetylacetonate (MoO2(acac)2) complex on alumina pillared montmorillonite K-10 (MMT K-10). Pillar MMT K-10 was produced by introducing MMT K-10 with a hydrolysis solution of NaOH with AlCl3. Different concentrations of pillaring solution were prepared in terms of OHto Al3+ ratio (0.5, 1.0, 1.5 and 2.0) to observe the structural characteristics of MMT K-10. The pillared materials were then immobilized with 0.1 M MoO2(acac)2 and were characterized using X-ray diffractometry (XRD), scanning electron microscopy coupled in an energy dispersive X-ray spectrometer (SEM-EDX) and Fourier transform infrared spectroscopy with attenuated total reflection (FTIR-ATR) techniques. FTIR bands at ca. 890 – 930 cm-1 indicate that the Mo complex was immobilized on the surface of pillared MMT K-10 not in between the layers. This is supported by the SEM and XRD analysis where the SEM micrograph showed deposition of Mo on the surface of MMT K-10 as well as no modification of basal spacing was observed by XRD. Meanwhile, the d(001) spacing of the alumina pillared MMT K10 samples were seen to increase slightly as the concentration of OH/Al3+ increased.
Towards Ontology-Based Integration of Biomedical Atlases
Authors: Mohd Zaizi Nurzi Juana , Burger Albert
Published: April 2021

Medical imaging in clinical analysis has been the subject of significant research for many years. In many cases scan images like CT scan and MRI scan may compliment physical examinations. Linking these scan images to biomedical atlases is fundamental to facilitate analysis. Biomedical atlas provides mapping between the graphical model and the ontology. Mapping from one atlas to another corresponding atlas is complex when it involves atlases from different model organisms. For example, having a general accepted nomenclature for the components of mouse embryo which is in parallel with the human atlas nomenclature provide an efficient means for analysis and modeling in biomedicine. However, this lead to interoperability issue. Therefore, taking the advantage of Semantic Web, Intelligent Agents and Ontology, this project starts with research linking imaging data of mouse embryo MRI to a standard canonical mouse atlas as designed in Edinburgh Mouse Atlas Project and also research on spatial rules to identify matching regions in atlases and images.
Qualitative Content Analysis: A Case Study of a Malaysian Government Education Website
Authors: Azizan Nurdiana , Smith Ross , Cooper Vanessa , Abu Bakar Noraizah
Published: April 2021

Content analysis is a set of qualitative methods utilized to analyse data from verbal, print or electronic communication channels. Text-based information from interviews, focus groups and open-ended survey questions can be evaluated using this method. This paper shall put forth the definition of qualitative content analysis and discuss the basic principles of its technique. The method for conducting qualitative content analysis research will then be outlined and explained. A case study of a Malaysian government education website is provided to demonstrate the application of the said method. The case study explores several critical success factors (CSFs) involved in the transfer of knowledge from the Government to targeted users via an education-based website. Fifteen interviews were conducted and 14 CSFs are identified and segregated into six thematic groups. This exercise shall provide practical guidance to the practitioners that are directly involved in the process. The identification and understanding of the CSFs would provide the much needed direction for the website administrators and content creators. They would have access to essential information that enable them to make strategic decisions related to their website’s content development and delivery activities. This would then enhanced their capacity to deliver the requisite knowledge to their targeted users.
Anti-Bacterial Activities of Melastoma Malabathricum Stem Bark Fractions against Streptococcus Mutans
Authors: Hanafiah Rohazila Mohamad , Abd Ghafar Siti Aisyah , Ibrahim Zurairah , Wan Ahmad Wan Yaacob , Wan Mohd Noor Wan Syaidatul Aqma , Ibrahim Nazlina
Published: April 2021

The objective of this study is to isolate and identify the bioactive compounds that possess antibacterial activities from Melastoma malabathricum stem bark acetone extract (MMSBAE) against Streptococcus mutans. M. malabathricum is widely used in the Southeast Asia to treat many ailments. A total of 12 fractions was purified by vacuum liquid chromatography (VLC) and further analysed by TLC-bioautography to determine antibacterial activities. TLC-bioautography showed that fraction 9 possesses antibacterial activities against S. mutans. Identification of fraction 9 had been done by GCMS and revealed 21 compounds. Some of the compound were important as agent pharmaceutical such as ?-amyrin, ?-sitosterol, hexadecenoic acid, stearic acid and hexacosanoic acid. Crystal violet and glass surface assay were used to determine anti-biofilm and anti-adherence activity, respectively. The concentrations of fraction 9 that produce 50% reduction in anti-biofilm and anti-adherence activities were 5 mg/mL and 2.50 mg/mL, respectively. Scanning electron microscopy (SEM) was performed to visualize the effect of the fraction 9 on biofilm structure of S. mutans. SEM analysis showed lysed biofilm were found on treated cells. These results indicated that this fraction possesses a powerful anti-cariogenic potential against S. mutans.
Combination Effects of Cymbopogon sp. Essential Oil on Selected Bacteria
Authors: Abdul Wahab Nur Aishah , Muhamad Hairul Shahril , Alhadi Nabilah Ahmad , Mat Radzi Salina , Mohamed Rehan Maryam , Mohd Noor Hanina
Published: April 2021

Combination effects between Cymbopogon flexuosus and Cymbopogon nardus essential oils were studied to determine whether the combination could emerge as better and more powerful antimicrobial agents against six selected bacteria includes Bacillus subtilis, Escherichia coli, Salmonella typhimurium, Serratia marcescens, Staphylococcus aureus, and Staphylococcus epidermidis. This combination study exhibited 40.67% additive, 28.67% antagonistic, 16.00% indifferent and 14.66% synergistic effects. C. flexuosus and C. nardus essential oils in combination showed a high inhibitory activity against S. aureus with 16% synergistic, 64% additive and 20% indifferent effects.
An Adaptive Multi Amplitude Thresholds Embedding Algorithm for Audio Steganography
Authors: Alsabhany Ahmed A. , Mohd Ridzuan Farida Hazwani , Ab Halim Azni Haslizan
Published: April 2021

Secure data transfer is an ever-growing challenge. Steganography refers to the art and science of secret communication. Audio steganography provides a smart solution for secure data transferring. The idea is based on hiding a secret message inside an audio signal. The challenge is to produce a stego file that can embed more data without decreasing the quality of the audio file, which may compromise the existence of the embedded message. As the technology advances, old methods become vulnerable and easy to compromise. Several methods include an encryption algorithm to add a second line of defense against a probable eavesdropper. This paper proposes a novel algorithm that aims to improve the perceptual transparency, robustness, and capacity of the embedded message. The main idea of the algorithm is to avoid embedding in the silent or near to silent intervals of the audio samples, and to scramble the embedded message as much as possible. The algorithm uses AES-256 to increase the level of robustness. The proposed algorithm is uniquely adapted to the message size and expected to perform better than the existing algorithms.
Preparations, Characterizations and Comparative Study on Electrochemical Performance of ZnO/SWNT and TiO2 /SWNT Nanocomposites
Authors: Mohd Shaifuddin Muhammad Amir Faiz , Che Abdullah Che Azurahanim , Ribut Siti Huzaimah , Rosli Natrah Shafiqah , Mohd Zawawi Ruzniza
Published: April 2021

This work has successfully prepared and characterized the nanocomposite based metal oxides, Zinc Oxide and Titanium Dioxide (ZnO and TiO2) with Single-Walled Nanotubes (SWNTs). Metal oxides are well-known alternatives to graphite as anode materials for lithium-ion batteries, due to their ability of highly capacities. In this study, green synthesis ZnO and TiO2 were synthesized from Kaffir Lime and Ilmenite mineral respectively, and their composite is prepared in the presence of SWNTs. The as prepared ZnO/SWNT and TIO2/SWNTs composite have been characterized by field emission scanning electron microscope (FESEM), Raman, and electron dispersive X-ray (EDX). The result of FESEM and EDX shows the metal oxide nanoparticles with average size 11.3 ± 3.0 nm was successfully deposited onto the SWNT. Electrochemical characterization of the prepared nanocomposites was carried out using cyclic voltammetry, and galvanostatic charge/discharge tests. The main difference found between these two nanocomposite is the internal resistance, thus giving specific capacitance 3.56 F/g and 0.78 F/g for SWNT/TiO2 and SWNT/ZnO respectively. The investigation highlights the importance of anchoring of green synthesis metal oxides nanoparticles on SWNTs for maximum utilization of electrochemically active ZnO, TiO2 and carbon nanotubes (CNTs) for energy storage application.
Synthesis and Mesomorphic Studies of Copper(II) with Carboxylato and N-Donor Ligands
Authors: Ozair Lailatun Nazirah , Mohd Redwan Farhanah , Mohd. Yamin Bohari , Azizi Farah Aini , Mustafani Muhammad Syahmi , Nasir Muhammad Syafiq , Hasan Nurul Husna , Yahya Mohd Adib
Published: April 2021

Metal containing liquid crystals also known as metallomesogens is an orientationally ordered liquid that combines properties of both crystalline state and liquid state. Three linear and one branched alkyl chain complexes of general formula [Cu2(RCOO)4(X)2], where R = CH3(CH2)13 (Complex 1, Complex 2), p-CH3(CH2)14OC6H4 (Complex 3) and CH3(CH2)7CH[(CH2)5CH3] (Complex 4), X = pyridine or 2,2-bipyridine were prepared. The single crystal X-ray crystallography of [Cu2(CH3(CH2)13COO)4(py)2] (Complex 1) shows dinuclear complexes with each square pyramidally Cu(II) centre was bridged by four carboxylato molecules and a pyridine molecule. For all complexes, the IR spectra gave the ??coo values in the range of 164 - 240 cm-1 , suggesting two binding modes of the alkylcarboxylate ligands. The UV-vis spectra shows a broad d-d band at ?max ~ 664 – 699 nm (?max ~55 – 341 M-1 cm-1 ), indicating that the distorted square pyramidal geometry at Cu(II). From the results of differential scanning calorimetry (DSC) and optical polarizing microscopy (OPM), complexes 1-4 exhibited liquid crystal mesophases.
Location-Based Cryptographic Techniques for Data Protection
Authors: Mohd Shamsuddin Nur Syafiqah , Ali Pitchay Sakinah
Published: April 2021

Data protection has become one of the significant issues in cloud computing when end users must rely on their cloud providers for security purposes. Cloud providers never guarantee the security of data. One of the best ways to overcome this issue is to have the data encrypted before it reaches the cloud servers. Cryptographic becomes a common mechanism used to transmit data securely in open networks, but there are also some challenges to implement encryption internally due to key management. Either the keys are vulnerable towards any security attacks such as HTTP-focused-brute-force attack during transmit over the network, in case of the keys are kept at the user site, or keys are missing if the device is stolen. Thus, location-based encryption adds another layer of security on top of existing encryption method. Location-based encryption enhances security by implementing location information into the encryption and decryption process to counter the possible problems. Location coordinates are used as a key for encrypting the data and the cipher text can only be decrypted if and only the decrypted location is matched with the location that has been computed with the key. In this paper discuss on location-based encryption technique that has been implemented in previous works which are asymmetric, symmetric and hybrid algorithm followed by its strengths and weaknesses. This paper finds that majority of the researchers used hybrid algorithm to implement their location-based encryption instead of using the asymmetric algorithm or hybrid algorithm alone because the hybrid algorithm has fast computation of symmetric algorithm and high security of asymmetric dual keys
Factors Influencing Information Seeking Behaviour for Halal Food Products Among Malaysian Muslim Consumers: A Conceptual Framework
Authors: S. Omari Firas , Azman Norhidayah , Ismail Roesnita
Published: April 2021

In the new global economy, information seeking behavior of halal food products has become a central issue for Muslims. Muslims in Malaysia form two-third of the entire population who makes the significance of consuming halal food products. This paper presents a conceptual framework on the information seeking behavior of Malaysian Muslim consumers while searching for halal food products. This conceptual framework presents the potential factors that might influence the information seeking behavior for halal food products among Malaysian Muslim consumers. This paper assumes that there is a relationship among human information attributes, namely: attitude, habit and awareness of individual and sources of information as factors that may lead to an effective information searching process. This study provides insights into how Malaysian Muslim consumers seek information for a halal food product that offers an effective searching process.