Digital Commons Network^™

Sign Language Recognition Using Kinect Sensor Based On Color Stream And Skeleton Points, Isack Bulugu

Tanzania Journal of Science

This paper presents a sign language recognition system based on color stream and skeleton points. Several approaches have been established to address sign language recognition problems. However, most of the previous approaches still have poor recognition accuracy. The proposed approach uses Kinect sensor based on color stream and skeleton points from the depth stream to improved recognition accuracy. Techniques within this approach use hand trajectories and hand shapes in combating sign recognition challenges. Therefore, for a particular sign a representative feature vector is extracted, which consists of hand trajectories and hand shapes. A sparse dictionary learning algorithm, Label Consistent K-SVD …

Evaluation Of Scatter Suppression Algorithm For X-Ray Exposure Of Soft Tissue Equivalent Phantoms Over Nominal Energy Range Using Fluka Code, Samson O Omondi, Innocent J Lugendo, Ramadhan R Kazema, Robert Kinyua

Tanzania Journal of Science

Soft tissue imaging is heavily impaired by streaks and cupping effects associated with X-ray scatter. Quality of images from projection imaging may be improved by the use of enhanced anti-scatter grids’ designs with potency to reject significant scatter. However, optimization of grid characteristics requires investigation to improve diagnostic image quality. Transmitted scatter spatially distributed degrades images engendering need for effective scatter correction protocols. This study investigated the pre-scan scatter suppression algorithm for X-ray exposure of soft tissue equivalent phantoms over nominal energy range. Adipose tissue and polymethyl methacrylate phantoms of cross-sectional area (30 x 30) cm2 and of varying thickness …

Biodiesel Production By Esterification Of Ricinoleic Acid Over A Series Of Synthesized Sulfated Zirconia Catalysts, Elianaso Elimbinzi, Stephen S Nyandoro

Tanzania Journal of Science

A series of sulfated zirconia (SZ) were synthesized and evaluated for catalytic esterification of ricinoleic acid obtained from the castor oil with butanol at 110 °C. The effect of alcohols’ chain length was studied using butanol (C4), propanol (C3), ethanol (C2) and methanol (C1) at 65 °C, and reflux of corresponding alcohol boiling points. The synthesized catalysts were characterized using nitrogen porosimetry, X-ray powder diffraction, thermogravimetric analysis and Diffuse Reflectance Infrared Fourier Transform Spectroscopy. Analysis of ricinoleic conversion was performed using gas chromatography. Sulfuric acid loading improved the surface area of zirconia at a lower dose. The surface areas of …

Variations In The Effects Caused By Magnetic Field On Chlorophyll, Nitrogen, Calcium, And Iron Contents In Species Of Vegetable Plants, Olusegun O. Alabi, Samuel O. Sedara, Kafayat Adeyemi, Felix Oladejo, Funmilayo Ayedun

Tanzania Journal of Science

The rates of reduction in chlorophyll and nutrients such as nitrogen, calcium and iron with the distance or range of source of Magnetic Field (MF) had not been considered. In this work, patterns of damage or reduction caused by a magnetic field on two different species of vegetables were studied. The first group was planted in an environment without the influence of MF, while the second group was subjected to high MF under the 330 kV electric lines. The magnetometer was used to measure the MF intensities. The chlorophyll content of each vegetable sample was determined on the field with …

Count Time Series Models For Road Traffic Accidents In Tanzania Mainland, Amina S Msengwa, Florence D Ngari

Tanzania Journal of Science

A pairwise analysis was conducted to assess the trends and factors associated with road traffic accidents in Tanzania. The Poisson and Negative Binomial Autoregressive Models were used to extend log linear functions by accounting time-varying components. A total of 85,514 road traffic accidents in Tanzania mainland that occurred from 2012 to 2017 were extracted from Tanzania Police Office records. Eleven factors were grouped into a human, vehicle, physical/environmental and pedestrian-related factors. The Likelihood ratio test, Akaike Information Criterion, Bayesian Information Criterion and residual ACF plots were used to evaluate the performance of the models in Dar es Salaam and other …

Hydrogeophysical Investigation For The Aquifers In Part Of Ilorin, Central Nigeria: Implication On Groundwater Prospect, Ayodele Kehinde Olawuyi

Tanzania Journal of Science

Hydrogeophysical study involving the use of Vertical Electrical Sounding (VES) was carried out in part of the basement complex rocks of Ilorin, central Nigeria, with the aim of determining its geoelectric parameters and groundwater potential. A total of thirty (30) VES were carried out using Schlumberger electrode configuration, with half electrode separation (AB/2) varying from 1m to 100m. Information on the subsurface lithologies, overburden thickness and aquiferous layers were obtained from the different VES locations in the study area. From the quantitative interpretations of the data collected, using the method of curve matching with the Orellana-Mooney master curves and 1-D …

Evaluation Of Petroleum Hydrocarbons Contamination In Soils And Groundwater Using Electrical Resistivity And Hydrochemical Methods-Case Study: Ayetoro, Osogbo Southwestern Nigeria, Mutiu A Fakunle, Muhydeen A Ibraheem, Wasiu B Agbaje, Luqman A Abidoye

Tanzania Journal of Science

The presence of Petroleum Hydrocarbons (PHCs) in hand-dug wells has become a concern to the residents of Ayetoro area, Osogbo. Consequently, the detection of PHCs was evaluated using, nine Vertical Electrical Soundings (VES) and 2D electrical resistivity tomography surveys. Soil samples collected were analyzed for porosity and permeability. Hand-dug well water samples were screened for PHCs. VES revealed that second layer had high apparent resistivity of 14415.0 Ωm, indicating presence of PHCs that had penetrated to maximum depth of 19.1 m. The highest resistivity of the control points was 48.0 Ωm, indicating absence of PHCs. The 2D resistivity revealed highest …

Spatial Distribution Patterns Of The Populations Of Two Subterranean Termites (Blattodea: Termitidae) In Eucalyptus (Myrtales: Myrtaceae) Plantations, Olaniyi T Alamu, Francis K Ewete, Ayangbade E Ayandokun, John A Ete

Tanzania Journal of Science

The study was conducted in Afaka, Northern Guinea Savanna of Nigeria to determine the spatial distribution patterns of the populations of Ancistrotermes sp. and Microtermes sp. in Eucalyptus camaldulensis Dehnh, Eucalyptus citriodora Hook, Eucalyptus cloeziana F. and Eucalyptus tereticornis Muell plantations. Spatial distributions patterns of the two termite species populations were determined using indices such as ratios of population variance to mean, Lloyd’s index, Green coefficient, Taylor power and Iwao’s regression models. The values of variance to mean ratios, Lloyd’s index and Green coefficient showed that the populations of both termite species had aggregated distribution pattern in all the Eucalyptus …

Synergistic Effects Of Halide Ions And Acacia Senegal Gum On The Corrosion Inhibition Of Mild Steel In Sulfuric Acid Solution, Jovine Emmanuel, Joseph Buchweishaija

Tanzania Journal of Science

The synergistic effects of halide ions, Br– and I– and Acacia senegal gum exudates on the corrosion inhibition of mild steel in 0.5 M sulfuric acid solution has been investigated by potentiodynamic polarization measurements and electrochemical impedance spectroscopy techniques. Results showed that Acacia senegal gum exudate moderately reduces the corrosion rate of mild steel. The inhibition efficiencies on mild steel electrodes increased with increase in gum exudate concentrations up to 300 ppm, corresponding to the inhibition efficiency of about 43% and its inhibition efficiency increased up to 81.6% with addition of halide ions due to synergistic effects. The enhancement effect …

Influence Of Carbonitriding Conditions On Phase Composition And Residual Stresses For 20mncr5 Low Alloy Steel, Richard J Katemi, Jeremy Epp

Tanzania Journal of Science

This paper reports an investigation of the influence of carbonitriding conditions for 20MnCr5 low alloy steel. Three gaseous carbonitriding conditions were investigated based on different carbon and nitrogen potentials to attain varying levels of carbon between 0.62 and 0.93% mass, whereas for nitrogen between 0.19 and 0.26% mass at the surface. Analysis of retained austenite and residual stress distributions was conducted using X-ray diffraction technique. The effective case depth varied between 900 and 1200 µm. The case microstructures were characterized by varying proportions of retained austenite and martensite, while the core contained essentially bainitic microstructures. The maximum amount of retained …

Leisure Time Management And Communication Skills As The Predictors Of Academic Motivation Among University Students, Hussain Mohammed Aburayash

Journal of the Association of Arab Universities for Research in Higher Education مجلة اتحاد الجامعات العربية للبحوث في التعليم العالي

The study examines the role of leisure time management and communication skills as the predictors of academic motivation among university students, and relationship between time management, communication skills and academic motivation. The sample was included (549) students from Jordanian public and private Universities, with various specializations and deferent academic levels, All which chosen in the available method. Data were collected through the interknit of time that lusted. Data were collected by three instruments, leisure time management questionnaire, communication skills scale and academic motivation scale. The study using correlation and multiple regression analysis. The finding show that there are positive and …

The Life History Of Learning Subsistence Skills Among Hadza And Bayaka Foragers From Tanzania And The Republic Of Congo, Sheina Lew-Levy, Erik J. Ringen, Alyssa N. Crittenden, Ibrahim A. Mabulla, Tanya Broesch, Michelle A. Kline

Anthropology Faculty Research

Aspects of human life history and cognition, such as our long childhoods and extensive use of teaching, theoretically evolved to facilitate the acquisition of complex tasks. The present paper empirically examines the relationship between subsistence task difficulty and age of acquisition, rates of teaching, and rates of oblique transmission among Hadza and BaYaka foragers from Tanzania and the Republic of Congo. We further examine cross-cultural variation in how and from whom learning occurred. Learning patterns and community perceptions of task difficulty were assessed through interviews. We found no relationship between task difficulty, age of acquisition, and oblique transmission, and a …

The Correlation Between Poverty, Water Quality, Community Health, And Education In Guatemala And Tanzania, Jessica R. Besnier

Senior Honors Projects, 2020-current

This paper explores the relationship between poverty, water quality, community health, and education in Tanzania and Guatemala. These metrics will allow for a thorough analysis of the relationships between the countries and will determine their impact on the other aspects in these two countries. While Guatemala and Tanzania are very different countries, they share many things in common such as inequalities among different groups, having many different groups of indigenous people, having most people living in rural areas, and are located on a coast. Also, they share similarities regarding poverty, water quality, community health, and education. By looking into these …

Effect Of Sludge Content On Different Types Of Food Waste Degradation In Anaerobic Digester, Mumtahina Binte Latif

Civil Engineering Theses - Archive

Food waste (FW) is the second-largest component in landfills which impacts environments adversely by generating excessive leachate and greenhouse gas. Generally, conventional anaerobic digester and composting can be used for FW disposal. However, the former is highly expensive while the latter is energy inefficient. In contrast, household or community level underground anaerobic digester offers a cost-efficient solution as well as retrieves valuable energy from FW. The addition of nutrients such as sludge to organic waste especially FW accelerates the production of energy by limiting volatile fatty acid (VFA) accumulation. The objective of the current study is to find out the …

Outcomes Of Cardiac Surgery At The Aga Khan University Hospital Nairobi – A One Year Review, Nelly Joseph Kahamba

Master of Medicine in General Surgery

Background: Cardiovascular diseases are the number one cause of death worldwide where an estimated 17.9 million people die yearly, according to WHO. Most of this disease burden lies in the low and middle-income countries. Management of cardiovascular diseases can be medical and/or surgical. Open heart surgery is one among the major surgeries performed worldwide. It is well established in high income countries where up to 200,000 cardiac surgeries can be performed yearly. In low-income countries particularly sub-Saharan Africa where most of the disease burden is, there are about 22 centres that cater to this growing need for cardiac surgery. There …

Performance In Mortality Prediction Of Saps 3 And Mpm0-Iii Scores Among Adult Patients Admitted To The Icu Of A Private Tertiary Referral Hospital In Tanzania, Nadeem Kassam

Master of Medicine in Internal Medicine

Background Illness predictive scoring systems are significant and meaningful adjuncts of patient management in the intensive care unit. They assist in predicting patient outcomes, improve clinical decision making and provide insight into the effectiveness of care and management while optimizing the use of hospital resources. We evaluated mortality predictive performance of Simplified acute physiology score (SAPS 3) and Mortality probability models (MPM0-III) in predicting ICU outcome as well as identified disease pattern and clinical factors associated with increased mortality. Methods This was a retrospective cohort study of adult patients admitted to the Intensive Care Unit (ICU) of the Aga Khan …

Companions On An Ignatian Journey: A Reflection On The Universal Apostolic Preferences, Beth Ford Mcnamee

Jesuit Higher Education: A Journal

The Universal Apostolic Preferences[i] focus my sense of mission and vocation in Jesuit higher education. I offer these personal and professional reflections as a fellow pilgrim and companion on the journey. I am a lay woman striving to embody the Jesuit, Catholic mission of Saint Joseph’s University (SJU). All Jesuit university students, staff, and faculty are also colleagues in this common mission. Together we are invited to prayer, accompaniment, discernment, conversion of heart, and action in light of these preferences.

Notes

[i] Society of Jesus, Universal Apostolic Preferences, accessed January, 2021, https://www.jesuits.global/uap/.

The United States And Portuguese Angola: Space, Race, And The Cold War In Africa, Alex J. Marino

Graduate Theses and Dissertations

This dissertation is an international history of the role of the United States in the process of decolonization in Angola, a former colony of Portugal. I argue that the United States embraced Portugal, Angola, and neighboring Democratic Republic of Congo as irreplaceable Cold War allies. Decolonization in Africa challenged America’s relationship with all three countries, as competing forces within the American public called for Washington to adopt an anti-colonial, anti- racist ideology, while others demanded their government to support white supremacy at home and abroad. Decolonization in Angola, a protracted liberation struggle that started in 1961 and lasted until 1974, …

Electronic Information Resources: An Overview Of Problems Faced By The Faculty Members, Ms. Saddiqa, Mohammad Hussain

Library Philosophy and Practice (e-journal)

Purpose: This study is an attempt to investigate the problems faced by respondents while accessing electronic information resources. The study's specific objectives were to examine the demographic information, to probe the problems faced by the faculty members and to examine the difference of opinion between male and female faculty members regarding problems concerned with the electronic information resource.

Research Design and Methodology: The survey research method was used, and data was collected from the respondents through the structured questionnaire. The stratified sampling technique was used, and 340 faculty members were selected from the total population of 661. The collected data …

From Dugouts To Double Outriggers; Lexical Insights Into The Development Of Swahili Nautical Technology, Martin Walsh

Wacana, Journal of the Humanities of Indonesia

The early history of nautical technology in the western Indian Ocean and adjoining parts of the eastern Africa coast is poorly understood. In the absence of evidence from shipwrecks, it has hitherto been based largely on the uncertain interpretation of a few documentary references and speculation surrounding technological parallels and assumed lexical resemblances. This paper examines some of the linguistic evidence in a more rigorous way, by undertaking a cross-dialectal comparison of names for watercraft and terms for outriggers in Swahili (Kiswahili), a Bantu language spoken on the islands and in scattered communities along the western seaboard of the Indian …

Chimes: April 16, 2021, Calvin University

Chimes

Student athlete Simon Detmer breaks national para athletics record by Harm Venhuizen

Committee to decide future of academic cuts by Juliana Knot

Suspect arrested after female students harassed on Calvin, Cornerstone campuses by Juliana Knot

Admissions offers slate of virtual events for prospective students by Jamison Van Andel

Last man standing: men in SPAUD reflect on overwhelmingly female field by Sarah Gibes

Students struggle to find time for sabbath by Michaela Giovannelli

Surface-Eroding Drug Delivery Films For Sequential And/Or Intermittent Release Of Psychoactive Drugs, Jason Price

Honors Theses

ABSTRACT JASON BLAKE PRICE: Surface-Eroding Drug Delivery Films for Sequential and/or

Intermittent Release of Psychoactive Drugs For patients with psychiatric diseases, adherence to medication schedules, medication

errors, and abuse are common issues. Promising new forms of therapy for these patients, such as micro-dosed lysergic acid diethylamide (LSD), where patients receive 10-20% of a full dose every third day, present further drug delivery challenges. Sequential or intermittent release of drugs from an implanted device could ensure long-term drug compliance, automate drug dosing during the life of the implant, and eliminate potential for abuse and medication errors. To this end, we generated …

Multiple-Micronutrient Supplementation In Pregnant Adolescents In Low- And Middle-Income Countries: A Systematic Review And A Meta-Analysis Of Individual Participant Data, Emily C. Keats, Nadia Akseer, Pravheen Thurairajah, Simon Cousens, Zulfiqar Ahmed Bhutta, Global Young Women’S Nutrition Investigators’ Group

Woman and Child Health

Context: Approximately 7.3 million births occur annually among adolescents in low- and middle-income countries. Pregnant adolescents constitute a nutritionally vulnerable group that could benefit from intervention to mitigate the mortality and adverse birth outcomes associated with adolescent pregnancy.
Objective: The aim of this systematic review and meta-analysis was to assess the following: (1) the effect of multiple-micronutrient (MMN) supplementation vs iron and folic acid (IFA) supplementation among adolescents on maternal morbidity, birth outcomes, and mortality outcomes, (2) the effects of MMN supplementation in adolescents compared with the effects in adult women, and (3) the effect modification, if any, of MMN …

Understanding Perceptions Of Quality Among Early Childhood Education Stakeholders In Tanzania And Lesotho: A Multiple Qualitative Case Study, Dawn Davis, Debra Miller, Dorothy Mrema, Moikabi Matsoai, Ntsoaki Mapetla, Abbie Raikes, Anna Burton

Department of Child, Youth, and Family Studies: Faculty Publications

Recent global efforts around early childhood education (ECE) have led to increased investments and access, especially in low- and middle-income countries (UNESCO, 2019). As access grows, focus has shifted from enrollment to quality (Gove, 2017). This paper explores how ECE stakeholders in Tanzania and Lesotho define ECE quality. Findings show that stakeholders define quality in similar ways, highlighting the importance of trained teachers who implement specific teaching practices, strong partnerships with families and the community, critical infrastructure, and government support. However, review of the country contexts found that current conditions and support for these quality indicators were lacking.

Analysis Of An Obstetrics Point-Of-Care Ultrasound Training Program For Healthcare Practitioners In Zanzibar, Tanzania., Elizabeth A Hall, Danielle Matilsky, Rachel Zang, Naomasa Hase, Ali Habibu Ali, Patricia C Henwood, Anthony J Dean

Department of Emergency Medicine Faculty Papers

BACKGROUND: A point-of-care ultrasound education program in obstetrics was developed to train antenatal healthcare practitioners in rural Zanzibar. The study group consisted of 13 practitioners with different training backgrounds: physicians, clinical officers, and nurse/midwives. Trainees received an intensive 2-week antenatal ultrasound course consisting of lectures and hands-on practice followed by 6 months of direct supervision of hands-on scanning and bedside education in their clinical practice environments. Trainees were given a pre-course written exam, a final exam at course completion, and practical exams at 19 and 27 weeks. Trainees were expected to complete written documentation and record ultrasound images of at …

Effects Of Social Context On Women’S Political Engagement: Evidence From Focus Group Experiments In Tanzania, Elizabeth Kay Mcguire

Yale Graduate School of Arts and Sciences Dissertations

Both theory and policy experts have sought to understand how norms around women’s political participation may shift. This dissertation provides evidence that the engagement of women can be affected by social contexts at the micro-level. Through two randomized field experiments, I show that the social referents who are present during a discussion about women and gender culture in Tanzania have a significant impact, not only in how those topics are discussed, but also on the behavior of the subjects with regards to women’s political participation. Between these two experiments, I conducted over 400 total focus groups in both rural and …

Amjambo Africa! (April 2021), Kathreen Harrison

Amjambo Africa!

In this Issue

COVID-19 denial in Burundi and Tanzania.....................2

Cameroonian deportations..3

In Her Presence .................4/5

Health care

Vaccine Q&A

Amjambo’s 3rd birthday.......6

MEBIC..................................10

Dr. Shah on vaccine safety.11

Magufuli of Tanzania..........12

World Market Basket..........14

Farming

African donuts

Soil safety..............................15

Baking Academy.................18

Bikes for all Mainers...........19

Childcare..............................20

Finance................................21

Columns & letters..............................24/25/26/27

Bangor/DEI..........................28

Novruz Festival....................29

Gisele Mukundwa...............31

Musical diversity.................31

Translations

French..................................7

Swahili.................................8

Somali..................................9

Kinyarwanda.....................22

Portuguese.........................23

Otto Warburg And His Contributions To The Screw Pine Family (Pandanaceae), Martin W. Callmander, Robert Vogt, Anna Donatelli, Sven Buerki, Chiara Nepi

Biology Faculty Publications and Presentations

Otto Warburg (1859–1938) had a great interest in tropical botany. He travelled in South-East Asia and the South Pacific between 1885 and 1889 and brought back a considerable collection of plant specimens from this expedition later donated to the Royal Botanical Museum in Berlin. Warburg published the first comprehensive monograph on the family Pandanaceae in 1900 in the third issue of Das Pflanzenreich established and edited by Adolf Engler (1844–1930). The aim of this article is to clarify the taxonomy, nomenclature and typification of Warburg's contributions to the Pandanaceae. Considerable parts of Warburg's original material was destroyed in Berlin …

Intimate Partner Violence Is A Barrier To Antiretroviral Therapy Adherence Among Hiv - Positive Women: Evidence From Government Facilities In Kenya, Bornice C. Biomndo, Alexander Bergmann, Nils Lahmann, Lukoye Atwoli

Internal Medicine, East Africa

Introduction: Intimate Partner Violence (IPV) is linked to low engagement with HIV management services and adverse clinical outcomes, including poor ART adherence. In sub-Saharan Africa, studies on pregnant/postpartum women and transactional sex workers have produced divergent evidence regarding IPV’s association with poor ART adherence. We investigate this association among a broad group of women.

Methods: We sampled 408 HIV-positive women receiving free ART from different types of HIV clinics at government health facilities, assessing for IPV exposure by a current partner, ART adherence rate, and other factors that affect ART adherence (e.g. education, disclosure). ART adherence rates were measured using …

The Lingering Shadows: An Examination Of Collective Memory From Vietnam To The War On Terrorism, Kenneth Henry Decker 21

Honor Scholar Theses

No abstract provided.