Journal Articles: Recent submissions

Now showing items 1-20 of 2350

Sampling-based approaches to improve estimation of mortality among patient dropouts: experience from a large PEPFAR-funded program in western Kenya

Yiannoutsos, Constantin T.; An, Ming-Wen; Frangakis, Constantine E.; Musick, Beverly S.; Braitstein, Paula; Wools-Kaloustian, Kara; Ochieng, Daniel; Martin, Jeffrey N.; Bacon, Melanie C.; Ochieng, Vincent O.; Kimaiyo, Sylvester (Public Library of Science, 2008-12-02)

Background: Monitoring and evaluation (M&E) of HIV care and treatment programs is impacted by losses to follow-up (LTFU) in the patient population. The severity of this effect is undeniable but its extent unknown. Tracing ...
Reinforcing the 21st century pedagogical skills through the application of the question formulation technique (QFT) in secondary schools in south eastern region of Kenya

Kasivu, Gideon M.; Mwania, Jonathan M.; Kimatu, Josphert N.; Kimatu, Josphert N.; Mulwa, Janet K.; Kiilu, Redempta M.; Kithungu, Rose M.; Musyoka, James; Migwambo, Rebecca (2024-04-05)

Studies show that only 27% of graduates believe that Universities and colleges taught them how to ask their own questions. The Question Formulation Technique (QFT) imparts students a way that makes them to think critically ...
Enhancing adoption of climate services through an innovation systems approach

Mwangi, Mary; Kituyi, Evans; Ouma, Gilbert (Elsevier, 2020-07)

Recent years have marked the emergence of the innovation systems approach as a shift from the conventional linear models of technology transfer. Linear technology diffusion models hinder participatory approaches of local ...
A Sesotho news headlines dataset for sentiment analysis

Mokhosi, Refuoe; Shikali, Casper S.; Sethobane, Matello (Elsevier, 2024-03-27)

Sentiment Analysis (SA) is a subset of Natural Language Processing (NLP) which has become a promising research area enabling the provision of language specific services. Although research in high resource languages such ...
The genome organization of the lake magadi tilapia, oreochromis alcolapia grahami, a cichlid extremophile

Bernardi, Giacomo; Kavembe, Geraldine D.; Bergman, Harold L.; Bucciarelli, Giuseppe; Wood, Chris M. (Elsevier, 2024-03-10)

The genome of vertebrates is made of a mosaic of long stretches of DNA, called isochores, which are compositionally uniform, and belong to a few families of GC-poor (L1 and L2) and GC-rich (H1, H2, and H3) components. ...
Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica)

Li, Miao-Miao; Meegahakumbura, Muditha K.; Wambulwa, Moses C.; Burgess, Kevin S.; Moller, Michael; Shen, Zong-Fang; Li, De-Zhu; Gao, Lian-Ming (Elsevier, 2024-03)

Chinese Assam tea (Camellia sinensis var. assamica) is an important tea crop with a long history of cultivation in Yunnan, China. Despite its potential value as a genetic resource, its genetic diversity and domestication/breeding ...
Zeolite Na-A supported TiO2: Effects of TiO2 loading on structural, optical and adsorption properties

Munguti, Lawrence K.; Dejene, Francis B.; Muthee, Dorah K. (Elsevier, 2023-03)

Zeolite Na-A supported TiO2 nanopowders were synthesized via a modified sol–gel technique and the effects of TiO2 loading were characterized for thermal, structural, morphological, optical and textural behaviour. Thermal ...
Farmers’ knowledge, perceptions, and management practices of false codling moth (thaumatotibia leucotreta) in smallholder capsicum sp. cropping systems in Kenya

Onamu, Emmanuel M.; Mutyambai, Daniel M.; Nyangau, Isaac M.; Nderitu, John H.; Kasina, Muo; Kilalo, Dorah C.; Mweke, Allan N. (MDPI, 2024)

False codling moth (FCM) Thaumatotibia leucotreta Meyrick (Lepidoptera: Tortricidae) is currently the main pest of phytosanitary concern in international trade, causing rejection and decline of horticultural produce from ...
Levels of polycyclic aromatic hydrocarbons (PAHs) in healthcare waste incinerators’ bottom ash from five County hospitals in Kenya

Githinji, Muriithi J.; Njogu, Paul M.; Ng'ang'a, Zipporah W.; Karama, Mohamed (Scientific Research Publishing, 2024-03)

Health-care waste contains potentially harmful microorganisms and compounds which can infect and affect hospital patients, healthcare workers, the general public and environment. Therefore, management of health care waste ...
Maximal activation weighted memory for aspect based sentiment analysis

Mokhosi, Refuoe; Shikali, Casper S.; Qin, Zhiguang; Liu, Qiao (Elsevier, 2022-11)

The vast diffusion of social networks has made an unprecedented amount of user-generated data available, increasing the importance of Aspect Based Sentiment Analysis(ABSA) when extracting sentiment polarity. Although recent ...
Enhancing African low-resource languages: Swahili data for language modelling

Shikali, Casper S.; Mokhosi, Refuoe (Elsevier, 2020-08)

Language modelling using neural networks requires adequate data to guarantee quality word representation which is important for natural language processing (NLP) tasks. However, African languages, Swahili in particular, ...
Assessment of the impact of road transport policies on air pollution and greenhouse gas emissions in Kenya

Mbandi, Aderiana M.; Malley, Christopher S.; Schwela, Dietrich; Vallack, Harry; Emberson, Lisa; Ashmore, Mike R. (Elsevier, 2023)

We compile a detailed road transport inventory for greenhouse gases and air pollutants to explore energy emissions from alternative policy scenarios for the Kenya road transport sector. In 2010, road transport emissions ...
The structural use of timber in construction. A review

Oluchiri, Timothy O.; Sabuni, Bernadette; Wamalwa, C.; Omondi, B (2024)

Timber is one of the construction materials which when properly used, can have positive impact to both human beings and the entire ecosystem. This study therefore examines the performance, challenges and prospects of timber ...
A model to promote utilization of skilled health providers among women of reproductive age in Kandara sub-county, Murang’a County - Kenya

Gachathi, Daniel M.; Makworo, Drusilla; Mutunga-Mwenda, Catherine S. (2024)

Background: Lack of utilization of skilled delivery services by pregnant women contributes to increased number of maternal and neo-natal morbidities and mortalities. In Kenya, skilled deliveries stand at 62% while unskilled ...
Effect of shade intensities on growth, biomass and grain yield of green grams (vigna radiata) and maize (zea mays) in Kitui County

Mwangi, Timothy I.; Nguluu, Simon N.; Akuja, Thomas E. (East African Nature and Science Organization, 2024)

Maize and green grams are important food security crops grown and consumed in the arid and semi-arid regions of Kenya. High temperatures and low soil moisture lead to yield reduction. A two-season study was conducted to ...
Bricks as a sustainable building material. A review

Oluchiri, Timothy O.; Saburi, B.; Wamalwa, C.; Omondi, B. (2024-03)

Brick is one of the oldest building materials and a key product used by builders to enhance the quality of the buildings. It continues to be one of the most popular and leading construction material because of its pleasant ...
Performance of compressed lightweight concrete manufactured using a blend of sawdust, fish scales and sand aggregates

Oluchiri, Timothy O.; Oyawa, Walter O.; Winja, Mathew (2019-10)

The performance of Masonry blocks with partial replacement of sand by sawdust blended with crushed and grounded fish scales is evaluated. The parameters used in this study comprised of analyzing the physical properties and ...
Soil to plant transfer factors of natural radionuclides in khat (catha endulis) from Igembe south Subcounty, Kenya

Eliud, Elias M.; Riara, Martin M.; Kamweru, Paul; Ngugi, Fidelis (2024-01)

This study evaluated the soil to plant transfer factors of khat (Catha endulis) to determine the absorption potential of natural radionuclides. Soil and leaves of Khat were sampled from Igembe south subcounty, Kenya and ...
Stakeholders’ participation as an institutional determinant of strategic plan implementation in public secondary schools in Kenya

Kawinzi, Jeremiah M.; Kiilu, Redempta M.; Mulwa, Janet K. (2023-12)

This study sought to investigate institutional determinants of strategic plan implementation in public secondary schools in Machakos County, Kenya. The study objective sought to determine the influence of the stakeholders’ ...
Availability of computer facilities and integration of information communication technology in teaching and learning in public primary schools in Kenya

Shikomera, Mandila B.; Mulwa, Janet K.; Mwania, Jonathan M. (2023-09-05)

This study sought to investigate the influence of availability of computer facilities on integration of information communication technology in teaching and learning in public primary schools in Kakamega County, Kenya. The ...

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