SEKU Repository

Litho-structural mapping via machine learning and geodata on remotely sensed data in the Tharaka-Kanzungo, Kitui-Kenya

Fri, 31 Oct 2025 00:00:00 GMT

Litho-structural mapping via machine learning and geodata on remotely sensed data in the Tharaka-Kanzungo, Kitui-Kenya Odek, Jerald; Boitt, Mark; Thiong’o, Kuria; Kariuki, Patrick C. Litho-structural mapping is critical for resource exploration and hazard assessment, supporting economic development. This study applies Planetscope and ALOS Palser DEM data to conduct lithological and structural mapping in the Tharaka-Kanzungo region of Kenya's Northern Kitui County. The approach integrates support vector machine classification with manual (shaded relief) and automatic (PC Line module) lineament extraction. Planetscope’s high spatial resolution enabled effective rock unit discrimination, while ALOS Palser DEM data enhanced linear-structural analysis. SVM classification achieved 76.24% accuracy and a kappa of 70%, successfully identifying lithologies such as granitoid gneiss, semi-pelitic, calc-silicate, sillimanite-biotite, hornblendite, and crystalline limestone. Comparative results showed automatic methods detected more, shorter lineaments sensitive to texture and vegetation, whereas manual extraction captured fewer, longer, and distinct orientations. Stereographic projections further revealed tectonic features including shear foliations and lineations, aiding tectonic interpretation. The dominant NE-SW and NW-SE trends indicate structural influence on fluid pathways and potential mining zones. The integration of remote sensing techniques with ground-based validation produced a high-accuracy geological map, consistent with existing data. This approach demonstrates strong potential for updating maps and guiding mineral exploration in remote or inaccessible regions. DOI: 10.7176/JEES/15-5-02

Role of Women Farmer Groups in the Adoption of Climate-Smart Agricultural Practices Under Private Sector-Led Extension in Kitui West Sub-County, Kitui County, Kenya

Mon, 04 May 2026 00:00:00 GMT

Role of Women Farmer Groups in the Adoption of Climate-Smart Agricultural Practices Under Private Sector-Led Extension in Kitui West Sub-County, Kitui County, Kenya Kilonzo, Boniface K.; Kiruki, Harun M.; Mbala, Simon; Akuja, Thomas E. Smallholder farmers in Kitui West Sub-county, Kitui County, rely heavily on rain-fed agriculture, making them highly vulnerable to climate variability and change. Climate-Smart Agriculture (CSA) provides a sustainable approach to enhance productivity, resilience, and environmental conservation. However, adoption of CSA practices remains uneven, particularly among women farmers, despite their significant role in agricultural production. This study examined the role of women farmer groups in facilitating the adoption of climate-smart agriculture practices under private sector-led extension systems in Kitui West Sub-county. A mixed-methods approach was adopted, involving 196 smallholder farmers selected using Cochran’s sampling formula. In addition, purposive sampling was used to select women farmer groups, extension agents, and key stakeholders for interviews and focus group discussions. Data were analysed using chi-square tests and binary logistic regression in SPSS. The findings revealed that 75.1% of respondents belonged to women farmer groups, and group membership was significantly associated with CSA adoption (χ² = 10.842, p = 0.001). Frequency of meetings, perceived benefits, and discussiontopics were also significantly associated with CSA uptake (p < 0.05). A majority (81.5%) of respondents perceived women farmer groups as critical drivers of CSA adoption. The study concludes that women farmer groups are effective platforms for promoting CSA through knowledge sharing, collective learning, and access to extension services. The study recommends strengthening private sector partnerships, enhancing access to training and financial services, and promoting gender-responsive extension systems DOI: https://doi.org/10.37284/2707-4307

Factors driving the adoption of climate-smart Agriculture Practices Promoted by the Private Sector among Women Farmer Groups in Kitui West Subcounty, Kitui County, Kenya

Sun, 26 Apr 2026 00:00:00 GMT

Factors driving the adoption of climate-smart Agriculture Practices Promoted by the Private Sector among Women Farmer Groups in Kitui West Subcounty, Kitui County, Kenya Kilonzo, Boniface K; Kiruki, Harun M.; Mbala, Simon; Akuja, Thomas E. Climate-smart agriculture (CSA) has been promoted as a smart way of improving farm productivity. However, adoption levels have been low despite concerted efforts by both public and private sector actors. This has been attributed to reduced access to extension services, credit, and markets, especially by women farmer groups who make a significant contribution to the adoption of CSA. By actively involving women, the private sector-led model has far-reaching benefits in that women are usually organised into farmer groups, learn easily, and therefore adopt sustainable agricultural practices with ease. Guided by Diffusion of Innovation Theory, this study explored the potential of women farmer groups in driving the uptake of private sector-led adoption of climate-smart agriculture practices. A mixed-method approach was used, where qualitative research entailed data collection through interviews with 19 women farmer groups, private sector representatives, and stakeholders, while the quantitative method involved administering questionnaires to 196 farmers. Collected data was analysed using the Statistical Package for Social Sciences (SPSS) software. Results indicated that women farmers belonging to organised groups were more likely to adopt CSA practices than non-members (p < .05). The findings also revealed that women farmer groups play a facilitative role by enabling peer learning, resource pooling, and collective engagement with private sector actors. Results showed that women with access to institutional support, particularly extension and credit services, were more likely to adopt CSA practices than those without such support (p < .05). The study recommends strengthening private sector–led training and extension initiatives with a deliberate focus on women farmer groups. Second, policies should prioritise the formation and strengthening of women farmer groups as a strategy for scaling CSA practices. Third, government and development partners should enhance access to affordable credit and inputs through gender-responsive financing mechanisms to address key institutional barriers. DOI: https://doi.org/10.37284/eajab.9.1.4880

HLS 223: Clinical pharmacology

Wed, 30 Apr 2025 00:00:00 GMT

HLS 223: Clinical pharmacology South Eastern Kenya University April, 2025