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Recent Submissions
Social Media and Service Delivery in government portals: An Analysis of how Government of Kenya uses Social Media for service delivery
(IOSR Journal of Computer Engineering, 2020-04-05) Mwai, Josphat Karani; Karume, Simon Maina; Makokha, John Wanjala
The sustainable development goals (SDGs), which are at the heart of the 2030 Agenda for
Sustainable Development, are closely interrelated. This integrated nature of the SDGs has shed new light on the
need for integrated service delivery by various governments. One way for governments to achieve this
integrated service delivery is through, Whole Of Government (WoG) approaches which should been
accompanied by a more integrated approach to e-government and online service delivery. However, most e-government portals lack integration, interoperability and personalized service delivery. The purpose of this study was to investigate how social media technologies could be integrated into existing government portals for enhanced service delivery to citizens. The study employed design science research (DSR) research design to achieve its objectives. Purposive and censures sampling techniques were used in defining the sample. The target population consisted of experts involved in managing social media and portal service in government (94) and social media accounts on the eCitizen portal (4) Kenyan’s government national portal. Data was collected using automated social media analysis tool (social bakers), questionnaires and guided interviews. The study established that while government had already incorporated social media, social media with their portals, it was mainly being used for information dissemination and not to offer other services like public participation or transactional services. The study concluded by identifying measures and features that if implemented would improve integration of social media within government portals and also facilitate enhanced service delivery
through social media.
Thermodynamic Properties Of A Microcanonical Ensemble Of Mixture Of Helium-3 And Helium- 4 Isotopes With Duo-Fermion Spin Degeneracy
(Journal of Multidisciplinary Engineering Science and Technology, 2020-04-05) Chisira, Samwel Namayi; Masinde, Fred Wekesa; Makokha, John Wanjala; Lusamamba, Simon Mwatulo
A system of a mixture of Helium-3 and Helium-4 was considered in a weakly interacting system in this study. The partition function with duo-fermion spin was developed to bring out the superfluid properties of the system. The partition function was used to study and analyze the thermodynamic properties such as internal energy, specific heat and entropy of the system by singling out the duo-fermion spin component. It was found out that the internal energy and entropy increases with temperature. At high temperatures, the internal energy and entropy remains constant due to particle saturation. The specific heat increases exponentially with temperature and attains a peak value of 𝟓. 𝟎𝒙𝟏𝟎𝟏𝟗 𝒆𝒍𝒆𝒄𝒕𝒓𝒐𝒏 𝑽𝒐𝒍𝒕 𝒑𝒆𝒓 𝒎𝒐𝒍𝒆 𝑲𝒆𝒍𝒗𝒊𝒏 at 37 Kelvins.
Internal Energy Of Hybrid S-Wave And D-Wave Pairing In Bismuth Cuprates
(Journal of Multidisciplinary Engineering Science and Technology, 2020-06-05) Wanyonyi, Andrew Munyasia; Waswa, Michael Nakitare; Makokha, John Wanjala
Bogoliubov-Valatin Transformation was used to diagonalize a Hybrid Hamiltonian for electron-electron and electron-cooper pair
interaction. From the diagonalized Hamiltonian, an expression for ground state energy was obtained and used to determine internal energy of the system of Bismuth cuprates. It was noted that the internal energy of Bi-2201 is higher than of Bi-2212 and Bi-2223. At experimental transition temperature (Tc) (20 K, 95 K and 110 K), internal energies were recorded as 0.4843 eV, 0.010 eV and
0.0058 eV. While at room temperature (300 K), internal energy was found to be 0.9528 eV, 0.2323 eV and 0.1514 eV respectively for Bi-2201, Bi-2212 and Bi-2223. The observations are discussed with a view of explaining the cause for high temperature superconductivity which can help in achieving room temperature superconductivity. Considering this model, high Tc superconductors
can be identified and used to model room temperature superconductors.
Activity Concentration Levels of Natural Radionuclides in the Sediment Samples from Rosterman Gold Mine, Lurambi Sub – County, Kakamega County, Kenya
(International Journal of Research and Innovation in Applied Science, 2020-07-05) Wanyama, Conrad Khisa; Masinde, Fred Wekesa; Makokha, John Wanjala
Rosterman, located in Lurambi sub - county, Kakamega County, Western Kenya consists of gold mining that is done locally (artisanal gold mining). The activity concentration of 238U, 232Th and 40K in sediment samples from the wastes of gold mining were determined by gamma ray spectrometry using NaI (Tl) detector and decomposition of measured gammaspectra. As a measure of radiation hazard to the general population, gamma radiation dose rates were also evaluated. The average activity concentrations of 238U, 232Th and 40K were 85±2.24, 114±5.78and 260±12.18Bqkg-1, respectively. The mean absorbed dose rate in air was 52.5±4.2nGyh-1 while the annual average effective dose rate for indoor and outdoor were 0.4±0.02 and 0.3±0.01mSvy-1 respectively. The absorbed dose rate due to gamma radiation from naturally occurring radioactive materials was below the global average value of 60 nGyh-1. Hence, mining of gold at Rosterman has minimal hazardous health implicationto the general public.
Sommerfeld’s Coefficient Of Boson-Fermion Pair Condensate In Optimally-Doped Cuprates
(Journal of Multidisciplinary Engineering Science and Technology, 2021-12-05) Mukubwa, Abel; Masinde, Fred Wekesa; Makokha, John Wanjala
High temperature superconductivity has shown dependence on the interaction between a finite momentum Cooper-pair boson and a fermion. The occurrence of a superconducting energy gap in cuprates is defined by collective excitation of boson-fermion pair condensates (BFPC) above the ground state. The ground state energy of the system represents its total internal and has been used to determine Sommerfeld’s coefficient of a BFPC in high temperature superconductor’s. Atypically, the study is furthered by linking the theory to experiments, through extrapolations, leading to high-precision results both in cuprates and ironbased superconductors. For instance, the Sommerfeld’s coefficients of the model in YBa2Cu3O7 and Ca0.33Na0.67Fe2As2 are found to be 𝟑𝟎.𝟑𝟔𝐦𝐉𝐦𝐨𝐥−𝟏𝐊−𝟐 and 𝟏𝟏𝟒.𝟏𝐦𝐉𝐦𝐨𝐥−𝟏𝐊−𝟐 respectively while the empirical ranges in these materials are 𝟑𝟎±𝟓𝐦𝐉𝐦𝐨𝐥−𝟏𝐊−𝟐 and 𝟏𝟎𝟓± 𝟓 𝐦𝐉𝐦𝐨𝐥−𝟏𝐊−𝟐 respectively