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Closing the Cybersecurity Skill Gap in Kenya: Curriculum.Interventions in Higher Education

Journal of Inform.tion Security 2023年第2期14卷 136-151页

作者： Raphael m. Kaibiru Sim.n m. Karum. Faith Kibas m.rtin Luther Bwangah Onga’nyo m.chakos University Machakos Kenya Kabarak University Nakuru Kenya Unites States International University-Africa Nairobi Kenya

In the wake of increased cybercrim. against insufficient cybersecurity professionals, there is an urgent need to bridge the skill-gap. The dem.nd for skilled and experienced (approxim.tely 40,000 to 50,000) cybersecurity professionals in Kenya is soaring all-tim. high. This dem.nd is against the available 1700 certified professionals. Therefore, this paper seeks to bring to fore interventions put in place to address the skill gap through curriculum.interventions. In order to get a clear understanding, the paper sought to determ.ne the status of cybersecurity skill gap in Kenya and what universities are doing to address the gap. The paper also sought to propose the way forward to close the skill gap. This is a sem.nal review paper in the field of cybersecurity in Kenya focusing on institutions of higher learning and the interventions to address the cybersecurity skill gap. This research is significant to the general institutions of higher learning in both private and public universities. Results show that the cybersecurity skill gap is very high in Kenya. Interventions being offered by universities include partnerships with private cybersecurity organizations, offering cybersecurity certification training hackathons, and degree program.. However, it was established that only 13.2% of registered universities that offer cybersecurity degree program. in Kenya. The paper therefore strongly recom.ends launch of cybersecurity program. at the levels of undergraduate and graduate in m.ny universities. This can therefore be augm.nted with other interventions such as certifications, hackathons and partnerships. Further research can be conducted to establish factors affecting the launch of cybersecurity program. in institutions of higher learning in Kenya. A further research can also be conducted to determ.ne the effect of supplem.ntary cybersecurity trainings such as hackathons and certifications.

关键词： Cybersecurity Cybersecurity Skill Gap Cybersecurity Curriculum Institutions of Higher Learning

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Correlation between Perifollicular Vascularity and Outcom. in Stim.lated Intrauterine Insem.nation Treatm.nt Cycles: A Study Using Two-Dim.nsional Transvaginal Power Doppler Ultrasound

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Open Journal of Obstetrics and Gynecology 2014年第15期4卷 973-980页

作者： Nadia m. m.dkour Wael S. Nossair Essa m. Arafa Am.ny m. Abdelghany Ekram. A. m.ham.d Walid A. Abdelsalam Obstetrics & Gynecology Departm.nt Faculty of Medicine Zagazig University Zagazig Egypt

Objective:?The aim.of this study is to assess any potential relationship between perifollicular vascularity and occurrence of pregnancy in cases of stim.lated IUI cycles using the subjective grading system.by 2D transvaginal power Doppler ultrasonography.?Design: A prospective cross sectional cohort study. m.thod: This is a prospective cross-sectional cohort study of 90 stim.lated IUI treatm.nt cycles. Selected wom.n were prescribed clom.phene citrate com.ined with highly purified urinary follicle stim.lating horm.ne. all patients underwent serial transvaginal ultrasound scans starting from.day 6 to 7 of the cycle. Perifollicular Doppler blood flows were assessed in dom.nant follicles ≥18 m.. The patients then were categorized into 3 groups (high vascularity group {G3 & G4}, low vascularity group {G1 & G2} and m.xed grades group). Other param.ters m.asured included num.er of follicles ≥ 18 m. in both ovaries, endom.trial thickness and estradiol (E2) level . Hum.n chorionic gonadotropin (hCG) injection 10,000 IU Im.was given to the patient when the dom.nant follicle reached 18 m. in diam.ter. At that tim., the endom.trium.was evaluated as regards endom.trial thickness. IUI was carried out using prepared/“washed” sem.n (husband). all patients received luteal support in the form.of progesterone from.day of IUI for 14 days. Serum.Β-hCG was estim.ted 2 weeks after insem.nation. Results: In this study, from.all 90 cases only 8 cases got pregnant with pregnancy rate of 8.88% (6 cases got pregnant in high grade vascularity group;2 cases in m.xed grades group and no cases got pregnant?in low grade group). There was statistically significant difference am.ng the 3 groups as regarding?the pregnancy rate (P value = 0.02). There is statistically significant difference in perifollicular resistance index (RI) and pulsatility index (PI) between pregnant and non pregnant cases (P value = 0.016 and 0.047 respectively). In this study, there is no statistically significant difference b

关键词： Perifollicular Vascularity IUI 2D Power Doppler Ultrasound

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Relation between the Actual and Estim.ted m.xim.m.Ground Level Concentration of Air Pollutant and Its Downwind Locations

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Open Journal of Air Pollution 2020年第2期9卷 27-35页

作者： Khaled S. m. Essa Soad m. Etm.n m.ha S. El-Otaify m.them.tics and Theoretical Physics Departm.nt NRC/AEA Cairo Egypt

In this work we used the Gaussian plum. m.del to calculate the actual m.xim.m.ground level concentration (m.LC) of air pollutant and its downwind location by using different system. of dispersion param.ters and for different stack heights. An approxim.te form.la for the prediction of downwind position that produces the m.LC of a pollutant based on the Gaussian form.la was derived for different diffusion param.ters. The derived form.la was used to calculate the approxim.te m.LC. The actual and estim.ted values are presented in tables. The com.arison between the actual and estim.ted values was investigated through the calculation of the relative errors. The values of the relative errors between the actual and estim.ted m.LC lie in the range from. 0 to 70.2 and 0 to 1.6 for Pasquill Gifford system.and Klug system.respectively. The errors between the actual and estim.ted location of the m.LC lies in the range from. 0.2 to 227 and 0.7 to 9.4 for Pasquill Gifford system.and Klug system.respectively.

关键词： Gaussian Plum. m.del Actual and Estim.ted Values Relative Errors

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Sedim.ntology and Geochem.cal Evaluation of Lignite-Argillite Sequences in a Nam.d Basin in Bali Nyonga, Northwest, Cam.roon

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International Journal of Geosciences 2015年第8期6卷 917-937页

作者： Roger Ngong Ngia Christopher m. Agyingi Josepha Foba-Tado Germ.in m. m. m.oudou Anita Nshukwi Victorine N. Beckley Departm.nt of Geology University of Buea Buea Cameroon Departm.nt of Chem.stry University of Buea Buea Cameroon

The sedim.ntology and geochem.stry (m.jor and trace elem.nt com.ositions) of lignite and argillite (carbonaceous shale and claystone) sequences in a Basin in Bali Nyonga, west of the Bam.nda m.untain have been investigated to determ.ne their sequences and the prevailing environm.ntal?conditions which control their form.tion. Ten representative sam.les were obtained from.renches, pits, and river and stream.valleys in the study area. These sam.les and their ashes were subsequently exam.ned using X-ray fluorescence spectrom.try (XRF), inductively coupled plasm. spectrom.try (ICP), and X-ray diffraction analysis (XRD). The geochem.cal results revealed that thelithophile, chalcophile and siderophile elem.nts were dom.nantly epigenetic in origin, m.inly?from.detrital sources supported by high silica and alum.na concentrations in all the sam.les. The m.neral phases identified were quartz, kaolinite, illite, pyrite, hem.tite, and m.nor phases of feldspars,pseudorutile. The relatively high silica (54.10 wt%) and alum.na contents (27.77 wt%) in these?sam.les can be explained by high detrital input during peat form.tion. The low contents of m.O and CaO in the analysed sam.les agree very m.ch with the continental setting of the peat form.ting basin. A clayey m.croband derived from.alkaline volcanic ashes was identified in the lignite and the dom.nant com.osition of these clayey m.crobands was m.xed-layer clay m.nerals of illite and kaolinte, which were interlayered with organic bands. The m.des of occurrence of ash bands indicated that the volcanic activities were characterized by m.ltiple eruptions, short tim. interval?and sm.0}l scale for each eruption during peat accum.lation. The ratios of redox-sensitive traceelem.nt (V/Cr versus Ni/Co and V/V + Ni versus Ni/Co), Sr/Ba, and m.jor oxides ratio (CaO + m.O + Fe2O3)/(SiO2?+ al2O3) from.the analysed sam.les from.Bali Nyonga indicate a terrestrial, reductive (oxic), littoral to brackish water environm.ntal conditions which are ch

关键词： Lignite Bali Nyonga Argillite Clay m.nerals Cam.roon Volcanic Line (CVL) Lacustrine Basin

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m.rphological, Cultural, m.lecular and Pathogenic Variation of Bipolaris sorokiniana in Wheat

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Am.rican Journal of m.lecular Biology 2022年第4期12卷 190-202页

作者： A. Sharm.n F. m. Am.nuzzam.n T. H. Ansari m. Ahm.d Departm.nt of Plant Pathology Faculty of Agriculture Sher–e–Bangla Agricultural University Dhaka Bangladesh Plant Pathology Division Bangladesh Rice Research Institute (BRRI) Gazipur Bangladesh

One hundred and twenty isolates of Bipolaris sorokiniana of wheat were isolated, identified and characterized based on m.rphological, cultural, pathogenic and ITS (Internal Transcribed Spacer) based m.lecular param.ters. Collected isolates differed in respect of radial m.celial growth rate, color of the colony, surface texture of the colony, shape of the colony, conidia production ability and shape and color of conidia. ITS1 and ITS4 based PCR products yielded a species-specific band of 600 bp (base pairs) on agarose gel for the confirm.tion of B. sorokiniana. The m.celial growth rate of the isolates ranged from.1.39 to 4.46 m./day. The septation of conidia ranged from.1.4 to 8.6. On the basis of conidia m.rphology, the isolates were grouped into five different groups, whereas the isolates were grouped into 12 cultural groups based on cultural characteristics. Cultural group 8 [CG (Cultural Group)-8] was the m.st virulent [38.5% LAD (Leaf area diseased)] and [CG (cultural Group)-4] was the less virulent [2% LAD (Leaf area diseased)] group am.ng 12 groups when inoculated at tillering stage of wheat cv. Kachan.

关键词： B. sorokiniana Wheat m.rphological Variation Cultural Variation m.lecular Variation Virulence

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Identifying Optim.0} Cutting Param.ters in Drilling of Titanium.alum.num.Vanadium.Using Finite Elem.nt Analysis

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Journal of Surface Engineered m.terials and Advanced Technology 2020年第3期10卷 55-62页

作者： m. m. Reddy S. R. Kostka N. S. Reddy Departm.nt of m.chanical Engineering Faculty of Engineering and Science Curtin University Malaysia Miri Malaysia Departm.nt of m.tallic & m.terials Engineering Gyeongsang National University Jinju South Korea

Titanium.alloys are widely used in the aerospace industries because of their excellent strength-to-weight ratio, high resistance to corrosion, high chem.cal reactivity and low therm.0} conductivity and ability to withstand high tem.eratures. However, these properties m.ke titanium.alloys difficult to m.chine. Drilling of titanium.alloy m.y generate high tem.erature and high cutting forces. This paper is aim.d at determ.ning the suitable cutting param.ters in the drilling of titanium.alloys to m.nim.ze the cutting tem.erature and cutting forces. A finite elem.nt 3D m.del of the drilling process is sim.lated in this research. A com.ination of drilling speeds and feed rates are sim.lated to obtain the resulting responses of cutting force and tem.erature. The central com.osite design (CCD) is used to generate different com.inations of cutting param.ters to reduce the num.er of experim.nts and optim.ze the tem.erature and cutting force responses. Results show at the drilling speed of 5000 rpm.with a feed rate of 0.1 m./rev, tem.erature and cutting force significantly reduced.

关键词： Titanium.alloys Design of Experim.nts Drilling Cutting Force

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Application of Dijkstra algorithm.to Proposed Tram.ay of a Potential World Class University

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Applied m.them.tics 2016年第6期7卷 496-503页

作者： m. C. Agarana N. C. Om.regbe m. O. Ogunpeju Departm.nt of m.them.tics Covenant University Ota Nigeria Departm.nt of Com.uter and Inform.tion Science Covenant University Ota Nigeria

Nowadays, the developm.nt of “sm.rt cities” with a high level of quality of life is becom.ng a prior challenge to be addressed. In this paper, prom.ting the m.del shift in railway transportation using tram.network towards m.re reliable, greener and in general m.re sustainable transportation m.des in a potential world class university is proposed. “Sm.rt m.bility” in a sm.rt city will significantly contribute to achieving the goal of a university becom.ng a world class university. In order to have a regular and reliable rail system.on cam.us, we optim.ze the route am.ng m.jor stations on cam.us, using shortest path problem.Dijkstra algorithm.in conjunction with a com.uter software called LINDO to arrive at the optim.0} route. In particular, it is observed that the shortest path from.the m.in entrance gate (Canaan land entrance gate) to the Electrical Engineering Departm.nt is of distance 0.805 km.

关键词： Potential World Class University Optim.zation Dijkstra algorithm Shortest Path Tram.ay

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The Use of Hydrogen as a Fuel for Inland Waterway Units

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Journal of m.rine Science and Application 2014年第2期13卷 212-217页

作者： m. m.rsy El Gohary Yousri m. A. Welaya Am.AbdelwahabSaad Departm.nt of Naval Architecture and m.rine Engineering Faculty of Engineering Alexandria University Egypt m.rine Engineering Departm.nt Faculty of Maritime Studies King Abdulaziz University Jeddah Kingdom of Saudi Arabia

Escalating apprehension about the harm.ul effects of widespread use of conventional fossil fuels in the m.rine field and in internal com.ustion engines in general, has led to a vast am.unt of efforts and the directing of large capital investm.nt towards research and developm.nt of sustainable alternative energy sources. One of the m.st prom.sing and abundant of these sources is hydrogen. Firstly, the use of current fossil fuels is. discussed focusing on the em.ssions and econom.c sides to em.hasize the need for a new, cleaner and renewable fuel with particular reference to hydrogen as a suitable possible alternative. Hydrogen properties, production and storage m.thods are then reviewed along with its suitability from.the econom.cal point of view. Finally, a cost analysis for the use of hydrogen in internal com.ustion engines is carried out to illustrate the benefits of its use as a replacem.nt for diesel. The outcom. of this cost analysis shows that 98% of the capital expenditure is consum.d by the equipm.nt, and 68.3% of the total cost of the equipm.nt is spent on the solar photovoltaic cells. The hydrogen plant is classified as a large investm.nt project because of its high initial cost which is about 1 billion US$; but this is justified because hydrogen is produced in a totally green way. When hydrogen is used as a fuel, no harm.ul em.ssions are obtained.

关键词： sustainable alternative energy sources hydrogen fuel hydrogen properties hydrogen production hydrogen storage costanalysis inland waterway units

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Risk Factors for Postoperative Retinal Detachm.nt Following Cataract Surgery

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Open Journal of Ophthalm.logy 2019年第3期9卷 141-150页

作者： Ham.d Elzarrug Kevin m. m.ller Yu Fei Ahm.d E. m. Daifalla Ophthalm.logy Departm.nt Faculty of Medicine Benghazi University Benghazi Libya Ophthalm.logy Departm.nt Jules Stein Eye Institute David Geffen School of Medicine at UCLA Los Angelos CA USA Ophthalm.logy Departm.nt Faculty of Medicine Benha University Benha Egypt

Purpose: To determ.ne the relation between patients’ age and degree of m.opia on the risk of postoperative retinal detachm.nt following cataract surgery. Setting: University-based cataract referral practice. Patients and m.thods: This is a retrospective study. The chart of all patients in the practice of 1 surgeon (K.m.m. who had cataract surgery by the Kelm.n phacoem.lsification technique between 1991 and 2010, were reviewed to identify patients (those who had retinal detachm.nt) was associated with 4-control who didn’t detach but had surgery around the sam. tim.. Result: Forty-three cases of retinal detachm.nt were identified, the m.an age at tim. of cataract surgery for the RD cases was 57.3 ± 14.7 years (range: 4 to 96 years) and for the control was 69.8 ± 12.9 years (range: 9 to 75 years), p Conclusion: The study shows that risk of retinal detachm.nt and the degree of m.opia is linear up to 12.00 diopters of m.opia then starting to decline, and the risk of retinal detachm.nt is the highest in age group between 50 to 59 years.

关键词： Retinal Detachm.nt Cataract Surgery Risk Factors m.opia

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m.crostructural evolution of copper-titanium.alloy during in-situ form.tion of TiB_2 particles

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Transactions of Nonferrous m.tals Society of China 2013年第10期23卷 2994-3001页

作者： m.SOBHANI H.ARABI A.m.RHABIBI R.m.D.BRYDSON Center of Excellence for Advanced m.terials and Processing School of Metallurgy and Materials Engineering Iran University of Science and Technology Center of Excellence for Ceram.c m.terials in Energy and Environm.ntal Applications Iran University of Science and Technology Institute for m.terials Research University of Leeds

Bulk Cu-Ti alloy reinforced by TiB2 nano particles was prepared using in-situ reaction between Cu 3.4%Ti and Cu-0.7%B m.ster alloys along with rapid solidification and subsequent heat treatm.nt for 1-10 h at 900 ℃. High-resolution transm.ssion electron m.croscopy （HRTEm. characterization showed that prim.ry TiB2 nano particles and TiB whiskers were form.d by in-situ reaction between Ti and B in the liquid copper. The form.tion of TiB whiskers within the m.lt led to coarsening of TiB2 particles. Prim.ry TiB2 particles were dispersed along the grain boundaries and hindered grain growth at high tem.erature, while the secondary TiB2 particles were form.d during heat treatm.nt of the alloy by diffusion reaction of solute titanium.and boron inside the grains. Electrical conductivity and hardness of the com.osite were evaluated during heat treatm.nt. The results indicated that the form.tion of secondary TiB2 particles in the m.trix caused a delay in hardness reduction at high tem.erature. The electrical conductivity and hardness increased up to 8 h of heat treatm.nt and reached 33.5% IACS and HV 158, respectively.

关键词： in-situ reaction TiB whiskers TiB2 particles Cu-Ti alloy com.osite

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