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Application Of Guided Local Search (Gls) In Portfolio Optimization, Collether John Feb 2021

Application Of Guided Local Search (Gls) In Portfolio Optimization, Collether John

Tanzania Journal of Science

Portfolio optimization is a major activity in any operating business. Conventional portfolio optimization research makes simplifying assumptions; for example, they assume no constraint in how many assets one holds (cardinality constraint). They also assume no minimum and maximum holding sizes (holding size constraint). Once these assumptions are relaxed, conventional methods become inapplicable, and hence new methods are needed to tackle this challenge. Threshold Accepting is an established algorithm in the extended portfolio optimization problem. In this paper, an algorithm called Guided Local Search (GLS) is applied using an accurate and efficient designed hill climbing algorithm, named HC-C-R. GLS sitting on …

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Cellulase-Producing Bacteria Isolated From Mufindi Paper Mill Industrial Effluent, Iringa Tanzania, Erick Sinza, Aneth Mwakilili, Cyprian Mpinda, Sylvester Lyantagaye Feb 2021

Cellulase-Producing Bacteria Isolated From Mufindi Paper Mill Industrial Effluent, Iringa Tanzania, Erick Sinza, Aneth Mwakilili, Cyprian Mpinda, Sylvester Lyantagaye

Tanzania Journal of Science

Effluent and effluent-contaminated soil samples collected from Mufindi Paper Mill Limited, Iringa Tanzania were investigated for the presence of cellulolytic bacteria. The components of cellulase are endoglucanase, exoglucanase and β-glucosidase and these are very important for complete hydrolysis of cellulose to glucose monomers. Isolates were grown on nutrient agar and screened for cellulolytic activity on carboxymethylcellulose (CMC) agar plates using Gram’s iodine solution. Cellulases activities; endoglucanase, exoglucanase and β-glucosidase were assayed using CMC, avicel and cellobiose substrates, respectively by dinitrosalicyclic acid method. Out of 17 cellulolytic isolates obtained, crude enzyme extracts of only five isolates expressed all cellulases activities, the …

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Capacity Analysis Of A Television White Space Network Deployed Under Distance Distribution Approach, Moses Ismail, Mussa Kissaka, Prosper Mafole Feb 2021

Capacity Analysis Of A Television White Space Network Deployed Under Distance Distribution Approach, Moses Ismail, Mussa Kissaka, Prosper Mafole

Tanzania Journal of Science

Television White Space (TVWS) is currently a leading technology for broadband connectivity in rural areas due to its penetration capability and robustness to attenuation and fading. Since most rural areas where TVWS is suitable are characterized by sparse population distribution, a deployed network must be adequately planned to provide the required coverage while meeting the targeted quality of service. This paper modelled and analyzed the capacity of a TVWS suitable for sparsely populated settings. The TVWS network was modelled using the distance distribution approach, and capacity simulation was carried out through Matlab. Results showed that, at the signal quality of …

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Multi-Bands Circular Ring Monopole Antenna With Double L-Shape For Wlan/Wimax Applications, Hassan Mkindu, Hashim Iddi Feb 2021

Multi-Bands Circular Ring Monopole Antenna With Double L-Shape For Wlan/Wimax Applications, Hassan Mkindu, Hashim Iddi

Tanzania Journal of Science

The rapid growth of technology increases the demands of low profile and compact antennas, supporting different wireless systems standards in mobile devices. Recently, several multi-band antenna designs have been proposed for mobile devices due to the current advancement of antenna technology. In this paper, a multi-band circular ring with a double L-shaped monopole antenna for Wireless Local Area Network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) applications is presented. The proposed antenna consists of a circular-shaped and rectangular strip connected with two inverted L-shaped trips. The H-shaped-strips are attached within the rectangular-strips. The antenna is fed by a 50 …

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A Model For Mapping Combined Effects Of Quality Of Service Parameters And Device Features On Video Streaming Quality Of Experience, Beatrice Buberwa, Mercy Mbise Feb 2021

A Model For Mapping Combined Effects Of Quality Of Service Parameters And Device Features On Video Streaming Quality Of Experience, Beatrice Buberwa, Mercy Mbise

Tanzania Journal of Science

Maintaining quality of streaming video is challenged by network faults resulting into freezes and rebufferings on the video. On top of the network effects, device features have impacts on the image of the video frames displayed during streaming. Despite the simultaneous impacts of video quality from network and device, previous studies considered individual impact of network parameters or devices as influencing factors to propose Quality of Experience (QoE) models. This study proposed QoE model by mapping combined effects from both network and device on video streamed QoE. An experiment to study the effects of video quality from combined effects of …

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Acetylcholinesterase Activity And Oxidative Stress Biomarkers In Fiddler Crabs (Austruca Occidentalis) Along The Coastal Mangrove Areas Of Dar Es Salaam, Tanzania, James Lugata, Flora Stephano, Harishchandra Pratap Feb 2021

Acetylcholinesterase Activity And Oxidative Stress Biomarkers In Fiddler Crabs (Austruca Occidentalis) Along The Coastal Mangrove Areas Of Dar Es Salaam, Tanzania, James Lugata, Flora Stephano, Harishchandra Pratap

Tanzania Journal of Science

The aquatic organisms such as crustaceans serve as bioindicators of the environmental stressors which affect the aquatic ecosystems. The present study assessed environmental health status through fiddler crabs (Austruca occidentalis) towards oxidative stress biomarkers and AChE activity in mangroves with different levels of salinity and environmental contamination. Fiddler crabs were collected from Mtoni Kijichi, Kunduchi and Mbweni, which experience different levels of contamination from high to low along the Dar es Salaam coastline. Malondialdehyde the biomarker of oxidative stress was analysed by lipid peroxidation (LPO) assay and AChE activity was tested using Ellman assay in the crab tissues (muscles, hepatopancreas …

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Effects Of Time On Ph, Total Bacteria Counts, And Total Hydrocarbon Contents In The Bioremediation Of Crude Oil Contaminated Soil Using Indigenous Bio-Stimulants, Ita Uwidia, Osalodion Uwidia Feb 2021

Effects Of Time On Ph, Total Bacteria Counts, And Total Hydrocarbon Contents In The Bioremediation Of Crude Oil Contaminated Soil Using Indigenous Bio-Stimulants, Ita Uwidia, Osalodion Uwidia

Tanzania Journal of Science

This study was conducted to investigate the effect of time on pH, total bacteria counts, and total hydrocarbon contents in the bioremediation of crude oil contaminated soil using pig waste and sawdust as bio-stimulants. Dried soil samples (500 g each) were weighed each into seven different plastic bowls, and each bowl was contaminated with 10 g of crude oil. Six of the contaminated soil samples in six of the plastic bowls were amended with a combination of pig waste and sawdust as bio-stimulants in the ratio of 1:1 in amounts of 150 g, 125 g, 100 g, 75 g, 50 …

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Analysis Of A Reform Option For The Tanzanian Pension System, Andongwisye Mwakisisile, Torbjörn Larsson Feb 2021

Analysis Of A Reform Option For The Tanzanian Pension System, Andongwisye Mwakisisile, Torbjörn Larsson

Tanzania Journal of Science

In this study, an analysis of a reform option for the Tanzanian pension system was done. The current system is dominated by mandatory defined benefit operating under pay-as-you-go principles. The retirement benefits are based on the average of the three best final salaries in the ten years preceding retirement. Several studies and international experts have shown that such systems face unsustainability. We propose a reform to a notional defined contribution system in which the benefits depend on accumulated contributions indexed by internal rates of returns. Simulation of results for a time horizon of fifty years shows that the notional defined …

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Analysis Of Repeated Milk Yields And Composition Traits By Mixed Models For Crossbred Holstein Friesian Dairy Cows, Ewonetu Senbeta, Kefelegn Kefenie, Adane Abebe Feb 2021

Analysis Of Repeated Milk Yields And Composition Traits By Mixed Models For Crossbred Holstein Friesian Dairy Cows, Ewonetu Senbeta, Kefelegn Kefenie, Adane Abebe

Tanzania Journal of Science

This study evaluated the effects of milking month, milking time, and lactation stage on milk yield and composition traits of crossbred dairy cows. Twelve crossbred Holstein Friesian cows with the same parity were purposefully selected and categorized into three groups; each consisting of four. All cows were individually managed for 120 days. Milk yield record was done every day for the morning and evening time whereas milk samples were taken every fifteen-day intervals. Data collected were analysed by PROC MIXED procedure of SAS 9.4. The “morning milkings” in all milking months showed the highest variations for “milk yield” whereas the …

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Mineralogy And Geochemistry Of Shale-Hosted Copper Of The Middle Buanji Group, Chimala Area, South-Western Tanzania, Almachius Mutasingwa, Michael Msabi, Neema Jackson, Seetharamaiah Jagarlamudi Feb 2021

Mineralogy And Geochemistry Of Shale-Hosted Copper Of The Middle Buanji Group, Chimala Area, South-Western Tanzania, Almachius Mutasingwa, Michael Msabi, Neema Jackson, Seetharamaiah Jagarlamudi

Tanzania Journal of Science

The mineralogical and geochemical assessments are presented in this paper to constrain the mineralogy and copper concentrations of the shale-hosted copper in the Middle Buanji Group of the Upper Paleoproterozoic (1.67 Ga). The XRD analysis revealed that illite and chamosite are the major clay minerals present in the shales together with pseudomalachite, quartz, and muscovite that constitute over 95% by proportion of the sample. The minerals biotite, birnessite, ferroselite, bearsite, chloritoid, and anatase are present in association with shale-hosted copper in low amounts (i.e., <5% by proportion of the sample). The pseudomalachite [Cu5(PO4)2(OH)4] is considered as ore mineral of copper in the shales of the Middle Buanji Group. Field observations revealed the presence of different shale layers within the Middle Buanji Group such as red, grey and green/blue in which copper mineral is distributed. On average, the copper concentrations in the shale layers were unevenly distributed throughout the red-grey-green shales layers with values of 0.31 wt%, 5.2 wt% and 13.19 wt%, respectively. A noticeable amount of copper mineralization up to 25.7 wt% was restricted within the green shale layer as compared to red (0.31 wt%) and grey (10.9 wt%) layers. Keywords: Pseudomalachite; Supergene enrichment; Shale-hosted copper; Green shale layer

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Effectiveness Of Common Household Washing Of Tomatoes On The Removal Of Pesticide Residues, John Mahugija, Flaviana Ngabala, Faustin Ngassapa Feb 2021

Effectiveness Of Common Household Washing Of Tomatoes On The Removal Of Pesticide Residues, John Mahugija, Flaviana Ngabala, Faustin Ngassapa

Tanzania Journal of Science

The effectiveness of common household washing processes of tomatoes on the removal of pesticide residues was investigated in Iringa, Tanzania. Analyses of cleaned-up extracts were carried out using gas chromatography-mass spectrometry (GC-MS). Nine pesticide residues were detected in unwashed and washed samples. The compounds detected were chlorothalonil, pirimiphos-methyl, chlorpyrifos, profenofos, endosulfan sulphate, endosulfan ether, lambda cyhalothrin, cypermethrin and metalaxyl. The concentrations of chlorothalonil, pirimiphos-methyl, chlorpyrifos, profenofos, cypermethrin and lambda cyhalothrin in some unwashed and washed samples exceeded the maximum residue limits (MRLs). Washing reduced the concentrations of chlorothalonil and endosulfan sulphate in tomatoes by 22.2–98.0% (mean = 70%) and 33.3–55.6% …

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Mobile Pedestrian Navigation Framework For Multi-Factors Resources Allocation, Joseph Mushi, Baraka Jungwa Feb 2021

Mobile Pedestrian Navigation Framework For Multi-Factors Resources Allocation, Joseph Mushi, Baraka Jungwa

Tanzania Journal of Science

Although it is possible for pedestrian to walk to unfamiliar places, familiarizing and finding a way out of new environments is quite challenging unless a pedestrian navigation system (PNS) is used. Most existing PNS solutions are employing vehicle navigation framework, however, such systems are designed to work efficiently for vehicular systems and not suitable for finding shortest path in environment with poor geospatial mapping. This study designed pedestrian navigation framework for PNS that supports resource allocations in environment with poor geospatial mapping. Mixtures of qualitative and quantitative methods have been used to interview prospective users for requirement specifications and experimental …

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Floristic Studies On Herbaceous And Grass Species Growing In The University Of Lagos, Nigeria, George Nodza, Ruth Anthony, Temitope Onuminya, Oluwatoyin Ogundipe Feb 2021

Floristic Studies On Herbaceous And Grass Species Growing In The University Of Lagos, Nigeria, George Nodza, Ruth Anthony, Temitope Onuminya, Oluwatoyin Ogundipe

Tanzania Journal of Science

Rapid loss in flora diversity, changing patterns of vegetation and land use patterns in the University of Lagos Akoka campus has necessitated investigation on the herb and grass species so as to determine their compositions, structures and diversity within the area. Twenty sampling plots of 10m x 10m each were studied in five selected locations using random sampling. The samples were counted and identified using Flora of West Tropical Africa. A total of 75 taxa (herbs = 53 spp and grasses = 22 spp) belonging to 26 families and 64 genera were recorded in the area. Of all the families, …

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Monthly And Seasonal Rainfall Concentrations And Predictability In Tanzania, Pasvolo Mwinuka, Christian Uiso, Ladslaus Chang’A, Mwingereza Kumwenda Feb 2021

Monthly And Seasonal Rainfall Concentrations And Predictability In Tanzania, Pasvolo Mwinuka, Christian Uiso, Ladslaus Chang’A, Mwingereza Kumwenda

Tanzania Journal of Science

This study aimed at determining the monthly and seasonal rainfall concentration, predictability and the changes in rainfall seasons in Tanzania. Rainfall predictability was determined using Colwell’s indices, Rainfall Concentration Index (RCI) and Coefficient of Variation (CV). Results showed that rainfall in December–February (DJF), January–March (JFM) and February–April (FMA) has predictability due to constancy of 60%, RCI ≤ 9 and CV < 0.4 in Lake zone, Central zone, Southern Coast zone, Western and Southern Highlands zone. Rainfall in October to December (OND) was reliable in the Island zone, North-Eastern highlands zone and Northern coast zone with an average predictability due to constancy of 65%. In the Lake zone, all seasons (DJF, JFM, FMA, MAM, OND and DJFMAM) had uniform rainfall distribution (RCI = 8.7, CV = 0.35) and predictability due to constancy of 80% which leads to the conclusion that Lake Zone has unimodal rainfall distribution. Rainfall predictability in Tanzania has a West-East gradient. The western zones had an average predictability due to constancy of 68%. In general, rainfall in Tanzania is observed to be highly variable; only 20% of the predictability is concerned with reliability in the rainfall occurrence within the seasons and 80% is due to seasonality. Keywords: Rainfall concentration index; predictability; coefficient of variation; seasonality; constancy.

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Geometric Morphometric Comparison Of Abu Mullet, Planiliza Abu (Heckel, 1843) Populations In Bushehr Basin, Iran: Fatemeh Shabaninejad, Yazdan Keivany, Dara Bagheri, Fatemeh Shabaninejad, Yazdan Keivany, Dara Bagheri Feb 2021

Geometric Morphometric Comparison Of Abu Mullet, Planiliza Abu (Heckel, 1843) Populations In Bushehr Basin, Iran: Fatemeh Shabaninejad, Yazdan Keivany, Dara Bagheri, Fatemeh Shabaninejad, Yazdan Keivany, Dara Bagheri

Tanzania Journal of Science

Many fish behavior and habitats could be defined based on the fish morphology, thus, using the fish body shape, in addition  to its genetic characteristics, could be used to infer the type of fish habitat and its characteristics. This study aimed to compare the body shapes of five populations of abu mullet, Planiliza abu (Heckel, 1843), in Bushehr basin using geometric morphometric method. Some 162 specimens from Hendijan, Genaveh, Helleh, Kaki and Mond rivers were used. Three morphometric characters, total length (TL), fork length (FL) and standard length (SL) were measured. Samples were photographed from the left side, then 18 …

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Manifestations Of Power And Marginality In Marriage Practices: A Qualitative Analysis Of Sukuma Songs In Tanzania, Esther J. Masele, Venkatachalam Lakshmanan Feb 2021

Manifestations Of Power And Marginality In Marriage Practices: A Qualitative Analysis Of Sukuma Songs In Tanzania, Esther J. Masele, Venkatachalam Lakshmanan

Journal of International Women's Studies

This study examined manifestations of power and marginality in Sukuma marriage practices. The study was conducted in Kishapu District, Tanzania. It drew its materials from Sukuma marriage rituals, which include singing and performance of songs. The study adopted an ethnographic research design and used both primary and secondary data to analyse the construction of gender roles in songs and societal views. The songs were observed at live performances, and data related to their composition, interpretation, and impact were gathered through interviews with the singers. Thematic Code Analysis was used to analyze the data, which were then interpreted based on poststructuralist …

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Persistence Of The Glass Ceiling In Academia Globally With A Focus On Women Academics In Kenyan Universities, Bhoke Chacha Feb 2021

Persistence Of The Glass Ceiling In Academia Globally With A Focus On Women Academics In Kenyan Universities, Bhoke Chacha

Journal of International Women's Studies

Despite the existence of elaborate legal frameworks in Kenya that guarantee gender equity in all spheres of life, women academics in Kenyan universities still encounter many roadblocks in their quest to become professors. One position that has dominated recent discourse regarding the promotion of women in Kenyan universities is that women have generally arrived late into academia. It is also argued that the conflict between women’s traditional roles at home and productive work interferes with academic leadership. This paper offers a rebuttal of these arguments, and gives empirical statistics on the number of women PhDs that have come through the …

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Contextualizing The Politics Of Ten-Household Cluster Initiatives (Nyumba Kumi) For Human Security In Kenya, Edmond M. Were, Paul A. Opondo Feb 2021

Contextualizing The Politics Of Ten-Household Cluster Initiatives (Nyumba Kumi) For Human Security In Kenya, Edmond M. Were, Paul A. Opondo

Journal of African Conflicts and Peace Studies

National security has been a preserve of the State to the detriment of the welfare of the masses. Human security on the other hand incorporates the basic security elements that are globally recognized and touch on the daily lives of the masses. The Ten Household Cluster Initiatives that have been practiced in East Asia, Caribbean and parts of Western Europe and adapted in Eastern Africa are an avenue through which human security can be addressed though they are tightly controlled by the state and characterized by human rights flaws. Their rationalization is anchored in theories of individualism and communitarianism that …

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Climate, Vegetation, And Weathering Across Space And Time In Lake Tanganyika (Tropical Eastern Africa), Sarah J. Ivory, Michael M. Mcglue, Cara Peterman, Patrick Baldwin, Joseph Lucas, Andrew Cohen, James Russell, Justina Saroni, Emma Msaky, Ishmael Kimirei, Michael Soreghan Feb 2021

Climate, Vegetation, And Weathering Across Space And Time In Lake Tanganyika (Tropical Eastern Africa), Sarah J. Ivory, Michael M. Mcglue, Cara Peterman, Patrick Baldwin, Joseph Lucas, Andrew Cohen, James Russell, Justina Saroni, Emma Msaky, Ishmael Kimirei, Michael Soreghan

Earth and Environmental Sciences Faculty Publications

Climate and vegetation influence weathering rates and processes; however, evaluating the effects of each and feedbacks between systems, has yet to be accomplished for many types of landscapes. A detailed understanding of how these processes interact to shape landscapes is particularly crucial for reconciling future scenarios of changing climate, where profound alterations to both the biosphere and geosphere are anticipated. In the tropics, ecosystem services, such as soil and water quality, are linked to both vegetation and weathering processes that form a strong control on natural resources that are the foundation of many communities’ daily subsistence. This understanding is further …

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World Transit Research February 2021 Newsletter, Institute Of Transport Studies Monash University Feb 2021

World Transit Research February 2021 Newsletter, Institute Of Transport Studies Monash University

World Transit Research Newsletter

No abstract provided.

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Availability And Utilization Of Information And Communication Technology (Ict) Facilities For Services In Nigeria French Language Village Library, Augustine Alhaji Adejo (Ph.D) Jan 2021

Availability And Utilization Of Information And Communication Technology (Ict) Facilities For Services In Nigeria French Language Village Library, Augustine Alhaji Adejo (Ph.D)

Library Philosophy and Practice (e-journal)

This study focused on the availability and utilization of Information and Communication Technology (ICT) facilities for services in Nigeria French language village library. A descriptive survey research design was used for the study. The population of the study comprised of ten (10) library staff who are currently working in the Library. Since the number of library staff are minimal and accessible, total enumeration technique was used. The instrument used for data collection from respondents were checklist which was used to determine what are the ICT facilities are available in NFLV’s library as well as a structured questionnaire. The findings revealed …

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Using Whatsapp Messenger For Improving Learners' Engagement In Teaching And Learning: A Case Of Undergraduate Students At The Sokoine University Of Agriculture, Tanzania, Wulystan Pius Mtega Dr Jan 2021

Using Whatsapp Messenger For Improving Learners' Engagement In Teaching And Learning: A Case Of Undergraduate Students At The Sokoine University Of Agriculture, Tanzania, Wulystan Pius Mtega Dr

Library Philosophy and Practice (e-journal)

This study was set to investigate how WhatsApp Messenger supported learner-centred teaching and learning. Specifically, the study evaluated the level of exchange of scholarly information resources among students through WhatsApp Messenger, determined how WhatsApp supports learner-centred learning and assessed challenges influencing students when using WhatsApp Messenger in teaching and learning. The study involved undergraduate students and instructors at the Department of Records and Information Studies. It employed random sampling techniques in selecting students and purposive techniques in selecting instructors to be included in the study. Major results indicate that WhatsApp Messenger was highly adopted and used for supporting learning. All …

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Covid-19 And Teleneurology In Sub-Saharan Africa: Leveraging The Current Exigency, Philip Adebayo, Olusegun John Oluwole, Funmilola Tolulope Taiwo Jan 2021

Covid-19 And Teleneurology In Sub-Saharan Africa: Leveraging The Current Exigency, Philip Adebayo, Olusegun John Oluwole, Funmilola Tolulope Taiwo

Faculty of Health Sciences, East Africa

tion residing in rural areas that have poor access to medical experts. Despite having a ridiculously huge, underserved population, very few African countries currently have any form of sustained and organized telemedicine practice, and even fewer have dedicated tele-neurology services. The ongoing COVID-19 pandemic has proved to be one of the most significant disruptors of vital sectors of human endeavor in modern times. In the healthcare sector, there is an increasing advocacy to deliver non-urgent care via telemedicine. This paper examined the current state of tele-neurology practice and infrastructural preparedness in sub-Saharan Africa. Currently, there is over 70% mobile phone …

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Mentoring Experiences In Higher Education: Voices Of Early Career Academics (Ecas) At The University Of Dar Es Salaam, Tanzania, Joel J. Kayombo Jan 2021

Mentoring Experiences In Higher Education: Voices Of Early Career Academics (Ecas) At The University Of Dar Es Salaam, Tanzania, Joel J. Kayombo

Journal of Humanities and Social Sciences

Based on phenomenological inquiry, this paper analyses the perspectives and experiences of early career academics (ECAs) in obtaining mentoring support at the University of Dar es Salaam (UDSM). Phenomenological focus group discussions and phenomenological interviews were used to access narrative accounts from 21 ECAs. The study employed specific and step-by-step idiographic case study data analysis with a precise focus on the shared experiences of participants. The findings unveil mixed experiences in obtaining mentoring support among ECAs, the presence of peer mentoring, and the pivotal role of personal relationship in mentorship practices. Moreover, it was revealed that limited resources, time, and …

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Hip-Hop Poetry And Political Transformation: Citing Examples From Tanzania, Method Samwel Jan 2021

Hip-Hop Poetry And Political Transformation: Citing Examples From Tanzania, Method Samwel

Journal of Humanities and Social Sciences

This article describes the role of hip-hop in political transformation of African countries, citing examples from Tanzania. The article presents that hip-hop artists view the political systems of most African countries as the source of the continent’s socio-economic crisis and, therefore, demand for change of African political systems and behaviours. This article is a result of a qualitative research that deployed various research methods, including text collection and analysis, transcription, interviews, and administration of questionnaires. Hip hop texts were collected, transcribed, and analysed. Data collection, analysis and interpretation were guided by the reader response literary theory, which views the interpretation …

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Archaeological Perspective On The Impacts Of Caravan Trade Expansion In East Africa: Emerging Alternative Histories, Thomas J. Biginagwa, Philbert Katto Jan 2021

Archaeological Perspective On The Impacts Of Caravan Trade Expansion In East Africa: Emerging Alternative Histories, Thomas J. Biginagwa, Philbert Katto

Journal of Humanities and Social Sciences

The last two decades have witnessed an increase of archaeological research interest in the East African caravan trade, a topic that was traditionally exclusive to historians. Long-term empirical evidence currently generated by archaeologists continues to consolidate our understanding of the caravan trade, and helps to question some inferences previously drawn from colonial libraries. This paper presents archaeological evidence unearthed from the Northern and Southern caravan routes located in the corresponding areas in the contemporary northern and southern Tanzania. The paper engages material evidence to re-examine some of the consequences of the caravan trade commonly reported in historical writings. Doing so, …

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Patterns Of Linkages Between Technical Institutions And Extractive Industries In Developing Practical Skills Of Graduates In Tanzania, Kenneth Raston Nzowa, Blackson Kanukisya, Aneth Komba Jan 2021

Patterns Of Linkages Between Technical Institutions And Extractive Industries In Developing Practical Skills Of Graduates In Tanzania, Kenneth Raston Nzowa, Blackson Kanukisya, Aneth Komba

Journal of Humanities and Social Sciences

This study sought to examine patterns of linkages between technical institutions and extractive industries in developing practical skills of graduates. Specifically, the objectives were to examine forms of linkages between technical institutions and extractive industry firms in selected sites; and analyse work-organizing in linkages of technical institutions with extractive industry firms. To this end, a multiple-case study design was employed. Data collection involved a total of 55 participants, constituting 21 trainees, 12 trainers, and 3 principals/deputy principals. Other participants were 15 officials from extractive industry firms; 3 from regulatory body for technical institutions, as well as 1 industrial association in …

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Assessment Of Heavy Metal Concentration In Soils Around Geita The Gold Mine, Tanzania, Mariam G. Mgendi, Mkabwa L. K Manoko, W.J.S. Mwegoha, C. Southway C. Southway Jan 2021

Assessment Of Heavy Metal Concentration In Soils Around Geita The Gold Mine, Tanzania, Mariam G. Mgendi, Mkabwa L. K Manoko, W.J.S. Mwegoha, C. Southway C. Southway

Journal of Humanities and Social Sciences

Health issues related to gold mining cannot be underestimated. Gold mining produce acid mine drainage (AMD), which in turn releases heavy metals into the nearby environment, hence causing environmental pollution. Heavy metals are naturally very toxic, thus pose a great health concern especially when their concentration exceeds the recommended permissible limits. In this study, concentrations of five heavy metals—including Pb, Ni, Cr, Cu and Zn—were assessed in the soil around Geita Gold Mine (GGM). A total of 17 sampling sites were established from which the soil samples were collected at 0-15cm and 15-30cm soil depth. The concentration of both total …

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Influence Of The Use Of The Internet On The Reading Culture Of Students Of Government College, Umuahia Abia State, Nigeria, Juliana Obiageri Akidi, Florence Ada Oyije Agbese, Chukwuemeka Chukwueke Jan 2021

Influence Of The Use Of The Internet On The Reading Culture Of Students Of Government College, Umuahia Abia State, Nigeria, Juliana Obiageri Akidi, Florence Ada Oyije Agbese, Chukwuemeka Chukwueke

Library Philosophy and Practice (e-journal)

The Internet has simplified information services provided in this ICT era. One can easily acquire the required knowledge and information on a single click, thus, making information generation and dissemination timely. Regrettably, this may not be so for categories of individuals who seemed to have deviated from the original plan of the Internet for academics. Hence, this study was necessitated to investigate the influence of the use of the Internet on the reading culture of students of Government College, Umuahia. Three objectives guided the study. The research design adopted was a survey research design. The population of the study comprised …

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Use Of Print And Electronic Resources Among The Post-Graduate Students In The Teaching Departments Of University Of Kerala, Thiruvananthapuram, Meenu Mohan, Mini Devi B Jan 2021

Use Of Print And Electronic Resources Among The Post-Graduate Students In The Teaching Departments Of University Of Kerala, Thiruvananthapuram, Meenu Mohan, Mini Devi B

Library Philosophy and Practice (e-journal)

The study explores the use of print and electronic resources among the postgraduate students in the teaching departments of university of Kerala, Thiruvananthapuram. The other objectives are to examine the awareness about print and electronic resources, to determine which resources are suitable for students, identify the satisfaction level and problems faced in using print and electronic resources and to investigate the suggestions for using print and electronic resources. Respondents were selected from the postgraduate students through simple random sampling method applying questionnaire method. Collected data was analyzed using SPSS software and MS Excel. The findings revealed that majority of the …

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