Digital Commons Network^™

Modelling The Impact Of Undetected Cases On The Transmission Dynamics Of Covid-19, Herieth Rwezaura

Tanzania Journal of Science

The spread of COVID-19 globally has caused negative impacts to the public, making understanding the dynamics of transmission a necessity. Essential factors such as undetected cases, asymptomatic cases, and several non-pharmaceutical interventions have played significant roles in the spreading mechanism of COVID-19 in the human population. It is imperative to understand the significance of these factors in order to determine whether COVID-19 will be eradicated or will continue to persist in the population. A mathematical model is formulated to investigate the impacts of vaccination and several non-pharmaceutical interventions on the dynamics of a COVID-19 accounting for asymptomatic cases, detected (identified) …

Biodiesel Generation From Palm Kernel Biomass Via An In-Situ Transesterification Approach, Chikaodili D Ikechukwu, Ikhazuagbe H Ifijen, Nyaknno U. Udokpoh

Tanzania Journal of Science

This study investigated an in-situ transesterification of palm kernel biomass at variable reaction times (4 h, 5 h and 6 h) and catalyst loading (2 wt%, 3 wt.% and 5 wt.%). The biodiesel yields were observed to vary with these parameters. GC-MS analysis showed high fatty acid methyl esters (FAMEs) contents for all the prepared biodiesel samples (C-18:1, C-14:0, C-16:0, and C-18:0). 2 wt.% catalyst loading and 4 h reaction time were observed to be the best reaction conditions from the experimented parameters that gave the best biodiesel yield at 300 rpm mixing intensity. The in-situ method recorded a higher …

Application Of Faulkenberry (2018) Bayes Factor To A Balanced Two Way Analysis Of Variance With Random Effects, Onyeike D. Egburonu, Omotayo A. Abidoye

Tanzania Journal of Science

The Analysis of Variance technique estimates variance components by comparing their mean squares to their expected values. Nevertheless, this method could give variance component estimates that are found outside the parameter space, i.e. negative estimates. In a bid to overcome this deficiency, alternate approaches are essential, and likelihood-based approaches have become common over time. Bayesian techniques have also been proposed and Bayes factors developed for examining various models. We applied the Bayes factor proposed by Faulkenberry (2018) to a Balanced Two Way ANOVA under three (3) cases, namely Case 1: the levels of the two factors are fixed; Case 2: …

Mathematical Characterization Of Biological Control Of Cassava Pests Model, Yidiat O. Aderinto, Faith O. Ibiwoye, Michael O. Oke, Folashade M. Jimoh

Tanzania Journal of Science

Pests are major constraints to the effective growth and development of every crop through their damage, and can be controlled effectively by the use of their natural enemies which is referred to as the biological pest control. In this study, the biological control model of cassava pests through optimal control theory was presented in order to minimize the population of the pests and stabilize the natural enemies population so as not to affect the crop negatively. A mathematical model was formulated via the Lotka-Volterra model, and the model was characterized. The optimality system was established, the equilibrium point with its …

Ceding Power In Intra-Household Bargaining In Times Of Economic Anxiety: An Experimental Study In Nepal, Margaret Boittin, Katrina Kosec, Cecilia Hyunjung Mo, Soosun You

All Papers

How do perceptions of one’s relative economic status affect beliefs regarding gender roles? We conducted a 2019 survey experiment with approximately 2,000 adults in Nepal. Employing an established survey treatment called a priming experiment to subtly alter half of respondents’ perceptions of their relative economic well-being, we find that increased feelings of relative deprivation make married women significantly less likely to support gender egalitarian perspectives. Women decrease their support for women making decisions over household expenditures, having equal control over household income, sharing household chores, and women working outside the home. A message randomly read to some women and designed …

Characterization Of The Ch Addition Product From Meta- And Ortho-Xylene + Ch Reaction And Direct Experimental Observation Of The Tetrabromine Cluster Br4 Using Synchrotron Photoionization Mass Spectrometry, Rory R. Mcclish

Master's Theses

This thesis is centered on the use of a unique gas-phase spectroscopy technique to characterize products and elucidate reaction mechanisms. Experiments were carried out at the Chemical Dynamics Beamline 9.0.2 of the Advanced Light Source located at the Lawrence Berkeley National Laboratory in Berkeley, CA. Computational work was performed on the scientific supercomputer at USF to supplement experimental findings. Chapter 1 contextualizes the work spurred in response to the deleterious interactions of anthropogenic emissions on Earth’s climate. Chapter 2 describes the theoretical manipulations foundational to the experimental design and interpretation. Chapter 3 delves into the physical details of the experimental …

We Can Make A Better Use Of Orcid: Five Observed Misapplications, Miriam Baglioni, Paolo Manghi, Andrea Mannocci, Alessia Bardi

Copyright, Fair Use, Scholarly Communication, etc.

Since 2012, the “Open Researcher and Contributor ID” organisation (ORCID) has been successfully running a worldwide registry, with the aim of “providing a unique, persistent identifier for individuals to use as they engage in research, scholarship, and innovation activities”. Any service in the scholarly communication ecosystem (for example., publishers, repositories, CRIS systems, etc.) can contribute to a non-ambiguous scholarly record by including, during metadata deposition, referrals to iDs in the ORCID registry.

The OpenAIRE Research Graph is a scholarly knowledge graph that aggregates both records from the ORCID registry and publication records with ORCID referrals from publishers and repositories worldwide …

Formative Assessment In An Online Class Of Language Learning: Literature Review, Hernik Farisia

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Such published research provided the concept of formative assessment but the current practices of assessment for language learning digital based were weak. Therefore, this study intended to analyse and synthesize the results of relevant literature from any previous research to build a conceptual framework of using formative assessment and feedback in the digital age to promote a greater impact on reading achievement at elementary school. The literature selection was carried out using Publish or Perish (PoP) and screened by Convence.org program to records the eligible’ literature. A total of 8 articles were included in the analyses. The analyses of the …

The Effect Of Personal And Situational Factors On The Intention Of Whistleblowing With Moderated Legal Protection, Daisar Rahman, Nur Hayati

Jurnal Akuntansi dan Keuangan Indonesia

This research is to determine the effectiveness of legal protection in strengthening the relationship between attitude toward behavior, subjective norm, perceived behavioral control, the seriousness of wrongdoing, status of the wrongdoer, and reward with whistleblowing intentions. The population in this research was civil servants who were Regional Inspectors in all regencies in Madura. The sampling technique in this study was purposive sampling consisting of 104 civil servants who had functional positions as auditors, staffing auditors, or supervisors of regional government (P2UPD). Data was collected by distributing questionnaires directly to the respondents. The data analysis technique used in this study was …

Do Socio-Demographic Factors And Sources Of Information Relate To Climate Change Awareness? Evidence From Afrobarometer Round 7 Data, Ayodeji P. Ifegbesan, Razaq O. Azeez, Sesan Mabekoje

Journal of Environmental Science and Sustainable Development

Climate change has been considered the most significant environmental catastrophe which is currently threatening human survival. Like the rest of other countries on the African continent, climate change in Nigeria has debilitating effects on both the people and the community due to vulnerability and poor coping capability of the people. Numerous studies related to the problem of rising temperatures in Africa are now being carried out and documented. However, only a little research evidence is available, particularly from Nigeria, regarding the way socio-demographic factors and sources of information are related to climate change awareness. The Afrobarometer Round 7 data for …

Flood Analysis And Hydraulic Competence Of Drainage Structures Along Addis Ababa Light Rail Transit, Moses Kiwanuka, Seleshi Yilma, Joel Webster Mbujje, John Bosco Niyomukiza

Journal of Environmental Science and Sustainable Development

The occurrence of flooding events and the associated risks are increasing in the urban areas of most developing countries. Flooding in any circumstance causes major stresses on affected area’s economic, social and environmental regimes. Therefore, the current study presents a flood analysis and hydraulic competence of existing drainage structures on some selected roads of Addis Ababa City, after integration with Addis Ababa Light Rail Transit (AALRT) Drainage Systems. The existing side drains and cross drainage structures located within the study area were inspected and assessed to ascertain different aspects relating to their performance. Different watersheds were delineated. Hydrological analysis was …

Housing Condition In Coral Barracks, Nigeria, Sani Inusa Milala, Sani Aududu Maiyaki, Bala Ishiyaku, Sakina Yayajo, Ibrahim Idris, Mustapha Umar Saad

Journal of Environmental Science and Sustainable Development

Housing conditions in the coral barracks become interesting as research subjects to find out that the housing condition covers all-encompassing in both the dwelling’s physical attributes and housing satisfaction. Generally, having satisfactory housing accommodation is among the most prized aspects of human begins’ lives and a key component of people’s material living standards. The aim of this study was to assess the attributes and level of housing conditions in Coral Barracks, Nigeria to explore housing conditions and their attributes and cover only the non-commissioned officers’ quarters. A quantitative method using a questionnaire survey was used and the population size was …

Format Preference And Utilisation Of Library Information Resources By Undergraduates Of Public Universities In A Nigerian State, Bosede Adebimpe Ajiboye, Rahman Olorunleke Arowolo

Library Philosophy and Practice (e-journal)

The existence of an academic environment is incomplete without a functioning library, which forms the fulcrum of all academic institutions in knowledge development and information depository. Irrespective of the format, information must be protected and persevered for posterity. The study used a descriptive design method based on both qualitative and quantitative approaches. Structured Questionnaire was used to obtain data from 210 respondents while for the qualitative data the researcher interviewed the Heads of Automation and Readers’ Services Units of the three universities studied. Data were analysed using descriptive statistics, frequencies, percentage, mean and standard deviation. The formats of information resources …

The Issue Of Women In Science: Exploring The Gender Gap In Egypt's Scientific Research Productivity., Yomna Saleh

Theses and Dissertations

Research productivity and impact are highly valued in the scientific field. It is regarded as a significant determinant of career advancement, financial support, academic recognition, and prominent personal position. Unfortunately, this is an area that has demonstrated a long history of gender disparity. This quantitative study aims to validate and identify gender gaps concerning women’s research productivity to help assess effectiveness of interventions and policies aiming to improve female participation and representation in scientific research. Although, gender gap in scientific publications is a global phenomenon, but this should not mask potential variations at both the national and regional levels. Hence …

Energy Planning Model Design For Forecasting The Final Energy Consumption Using Artificial Neural Networks, Haidy Eissa

Theses and Dissertations

“Energy Trilemma” has recently received an increasing concern among policy makers. The trilemma conceptual framework is based on three main dimensions: environmental sustainability, energy equity, and energy security. Energy security reflects a nation’s capability to meet current and future energy demand. Rational energy planning is thus a fundamental aspect to articulate energy policies. The energy system is huge and complex, accordingly in order to guarantee the availability of energy supply, it is necessary to implement strategies on the consumption side. Energy modeling is a tool that helps policy makers and researchers understand the fluctuations in the energy system. Over the …

Sustainable Wastewater Treatment Technology For Rural Communities, Yousra Ahmed

Theses and Dissertations

Egypt is considered the country with the largest population in the Middle East Region. It is also expected to have the most significant population increase. The main objective of the present research was to develop a sustainable and effective wastewater treatment technology based on locally available materials such as sand and fabric in the treatment process. From the results obtained from the different experimental runs, it can be concluded that the use of fabric-aided sand filters achieves significant removal efficiency, especially in terms of COD and TSS. The results indicated the technical feasibility of utilizing different fabric materials with nylon …

Experiences Of Western Australian Rural Nursing Graduates: A Mixed Method Analysis, Amanda C. Graf, Barbara Nattabi, Elisabeth Jacob, Diane Twigg

Research outputs 2014 to 2021

Aims and objectives: To determine whether the current rural graduate programmes in Western Australia adequately support new graduate nurses transitioning into practice.

Background: Graduate nurse's transition to employment is a time of significant change and challenge, often resulting in periods of transition shock. These challenges are magnified in rural areas where graduates have to relocate to commence their career with limited rural nursing experience. Graduate programmes were developed to smooth the transition for university trained bachelor's degree registered nurses into the workforce. Supportive graduate nursing programmes are essential for enabling transition to practice and reduce attrition rates.

Design: Longitudinal convergent …

It Cannot Happen, Never: A Qualitative Study Exploring Youth Views On Disclosure Of Hiv Diagnosis To Their Sexual Partners In Southern Malawi, Maggie Zgambo, Diana Arabiat, Deborah M. Ireson Dr

Research outputs 2014 to 2021

With the availability of antiretroviral therapy, more children living with HIV live longer than before and grow into young adulthood. This study examined the concerns of youth about disclosure of an HIV diagnosis to their sexual partners and attempted to gain an understanding of their HIV status disclosure experiences, views, and plans. A focused ethnography was undertaken. Using semi-structured interviews, data were collected from 20 youth between the ages of 15 and 24 years who were attending an HIV clinic. The findings highlight that youth generally struggled to disclose their HIV status to their sexual partners. The most frequent reasons …

Dermoscopic Features Of Uncomplicated Tinea Versus Steroid-Modified Tinea: An Observational Study In Indian Patients, Mithila Ninad Gadekar, Nausheen Syed, Ashutosh Chate, Sushrut Save

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Tinea is one of the most common superficial fungal skin infections. Steroid-modified tinea infections may present with atypical morphology. This study aims to observe the difference between dermoscopic features of uncomplicated dermatophytosis and steroid-modified dermatophytosis.
Methods: This observational study was conducted in 60 patients with tinea cruris, tinea corporis and tinea faciei in the outpatient dermatology department of a tertiary care center. Patients were divided into group A and group B. Group A included 30 patients with no history of steroid use in the past three months. Group B included 30 patients with a history of steroid …

Plasma Malondialdehyde Levels Related To Acne Vulgaris Severity, Fitri Puspita, Nelva Karmila Jusuf, Ariyati Yosi

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Acne vulgaris (AV) is a multifactorial disorder characterized by the formation of open and closed comedones, papules, pustules, nodules, and cysts. Oxidative stress plays a role in the pathogenesis of AV. Reactive Oxygen Species (ROS), especially lipid peroxides (LPO), plays a role in mediating acne inflammation. Malondialdehyde (MDA) is one of the byproducts of LPO commonly used as a biomarker of cell damage.
Methods: This cross-sectional analytic study consisted of sixty patients with AV. The samples were taken from the blood plasma of AV subjects. An enzyme-linked immunosorbent assay (ELISA) examination was performed. The normality of data …

Indonesian Clinical Practice Guidelinesfor Systemic And Biologic Agents For Adults With Plaque Psoriasis, Novianto E, Budianti Wk, Fitri Em, Wiryadi Be, Soebaryo Rw, Pusponegoro Ehd, Effendi Eh, Rahmayunita G

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: In response to various biologic and non-biologic systemic agents available in Indonesia, proper and accredited treatment guidelines are required to ensure patient safety. Appropriate treatment is crucial and may affect remission time and morbidities. These guidelines were developed by the Indonesian Society of Dermatology and Venereology – Kelompok Studi Psoriasis Indonesia (INSDV-KSPI) to provide updated decision-making algorithms for the biologic and non-biologic systemic agents for the treatment of adult patients with plaque psoriasis.
Methods: Experts from twelve institutions across Indonesia were involved in developing the guidelines. Subsequently, a focus group discussed various journals, researchable questions, eligibility criteria, …

Generalized Pustular Psoriasis And Cushing’S Syndrome In Childhood Due To Corticosteroids Misuse, Fitri Azizah, Yusnita Rahman, Rahadi Rihatmadja, Triana Agustin, Rinadewi Astriningrum, Githa Rahmayunita

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Generalized pustular psoriasis (GPP) is characterized clinically by yellowish sterile pustules surrounded by erythema. GPP in children is very rare and may appear following steroid withdrawal in psoriasis vulgaris.
Case Illustration: A 14-year-old female presented to the emergency unit with generalized erythematous plaques and multiple pustules with lake of pus after abruptly stopped oral and topical corticosteroid for two weeks. The patient had used topical and oral corticosteroids for almost a year to treat psoriasis. Physical examination revealed moderately ill and tachycardic, with short stature, moon face, amenorrhea, and multiple erythematous plaques with multiple pustules and lake …

Intense Pulsed Light (Ipl) As Adjuvant Therapy For Acne Vulgaris: A Case Series, Widyaningsih Oentari, Angie Regina Sutrisno, Nelva Karmila Jusuf, Khairina Nasution

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Acne vulgaris is a chronic inflammatory disease of the pilosebaceous follicle with polymorphic clinical manifestation typically found on facial, neck and/or back area. The pathogenesis is complex and multifactorial. Management of acne vulgaris is determined based on its severity. Adjuvant therapies, such as intense pulsed light (IPL), have been described in accelerating the healing process during treatment.
Case Illustration: We report two cases regarding the usage of IPL as adjuvant therapy in acne vulgaris. Both patients were diagnosed with moderate acne vulgaris. The first patient was given topical adapalene 0.1% gel every night and sunscreen in the …

Low-Calorie Diet Improves Pasi Score In Psoriasis Patients With Obesity: An Evidence-Based Case Report, Kristian Kuniawan, Alessa Fahira, Edwin Ti Ramadan, Windy Keumala Budianti

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: The association between psoriasis and metabolic syndrome is appealing as the two may share a similar cross-linking systemic inflammation process. The inflammation processes occurring in obesity and psoriasis may aggravate one another. This raised the question of whether a low-calorie diet would possibly reverse the aforementioned process. This study aims to determine whether calorie restriction reduces psoriasis area and severity index (PASI) in obese patients with moderate-to-severe psoriasis receiving conventional treatment compared to no calorie restriction.
Methods: We searched Pubmed/Pubmed Central, ScienceDirect, Cochrane library, EBSCOhost, and Scopus databases using keywords derived from our clinical question. The inclusion …

Long Term Observation Of The Grassland Vegetation Used Intensively Or Extensively And Ecologically, H.-D. Matthes, J. Matthes, W. Jentsch, V. Pastushenko

IGC Proceedings (1977-2023)

The aim of the present paper was to study alterations of the grassland flora from 55 plots following a more extensive management under long term observation within 6 years. Extensification of grassland use leads to an increase of the numbers of plant species by 32%, “Red-list-species” included. The moisture number of the soils slightly increased and the reaction and nitrogen numbers decreased. Results are presented for different vegetation units.

Influence Of Extensive Management On Botanical Composition Of Permanent Meadow Sward, K. Mlynarczyk, E. Korona, E. Marks

IGC Proceedings (1977-2023)

The aim of undertaken investigations was to find the possibilities of grassland management with special respect to the biodiversity and the landscape conservation. Changes in botanical composition of the meadow sward against a background of different mowing utilization were examined on the semi-natural meadows situated on the peat-mursh soil in Masurian Landscape Park (north-east Poland). The areas mown with biennial pause and completely turned off from uses followed gradual simplifying of species composition and increasing of bog species participation. Results show on advisability of passing one harvest each year or with one-year pauses.

Vegetation Changes In Sown Grassland In The Uk After Nine Years Of Extensive Grazing Management, C. A. Marriott, G. T. Barthram

IGC Proceedings (1977-2023)

The effect of extensive grazing management with sheep on vegetation change in sown pastures (initially containing Lolium perenne and Trifolium repens) in the uplands of Scotland was investigated from 1990-1999. One treatment was representative of current more intensive management systems; it was fertilized, and maintained at a sward surface height of 4 cm. Two treatments were unfertilized and were maintained at sward surface heights of 4 cm or 8 cm; the ewe numbers carried on these treatments averaged 74% and 44%, respectively, of those on the fertilized treatment. In all treatments the sheep were Scottish Blackface ewes. Their single …

The Influence Of Rising Atmospheric Co2 On Grassland Ecosystems, J. A. Morgan, P. C. D. Newton, J. Nösberger, C. E. Owensby

IGC Proceedings (1977-2023)

Increasing atmospheric CO₂ concentrations and climatic change will have significant effects on the ecology of grasslands. This paper evaluates results from four CO₂ enrichment studies in contrasting grasslands. A Swiss study investigates the effects of elevated CO₂ (600 μL L^-1 CO₂) on perennial ryegrass (Lolium perenne L.) and white clover (Trifolium repens L), a New Zealand study examines how elevated CO₂ (475 μL L^-1 CO₂) affects a botanically diverse pasture, and studies in the Kansas tallgrass prairie and the Colorado shortgrass steppe investigate the effects of an approximate …

The Effectiveness Of Occupation-Based Virtual Reality Intervention On Upper Extremity Functional Improvement In Post-Stroke Individuals: A Systematic Review, Darcy Bowman, Tiffani Suhm, Ann Marie Brown, Aubrey Barrett, Hannah Reilley

Student Journal of Occupational Therapy

Purpose: Virtual reality (VR)-based therapy is an emerging practice in the clinical setting and still requires research documenting its efficacy. This review analyzed the effectiveness of VR-based therapy on upper extremity (UE) motor recovery in individuals with chronic stroke by analyzing multiple randomized controlled trials.

Methods: Search limits for this review consisted of articles published between January 2010 and January 2020 and available in English. Search keywords were based on language in individual databases (e.g. stroke or cerebrovascular accident, upper extremity, occupational therapy). Articles were limited to include only randomized control trials consisting of adult patients (18+) with …

Securing The Precipitous Heights: U.S. Lawfare As A Means To Confront China At Sea, In Space, And Cyberspace, Garret S. Bowman

Pace International Law Review

No abstract provided.