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Assessment of the impact of climate change on the freshwater availability of Kaduna River basin, Nigeria

parameters in the northern basement complex, Nigeria. Civil and Environmental Research. Vol. 3. Iss. 7 p. 11–19. I man R.L., H elton J.C. 1988. An investigation of uncertainty and sensitivity analysis techniques for computer models. Risk Analysis. Vol. 8. Iss. 1 p. 71–90. DOI 10.1111/j.1539-6924.1988.tb01155.x K endall M.G. 1975. Rank correlation methods. 4th ed. Charles Griffin, London, U.K. ISBN 0852641990 pp. 202. K undu S., K hare D., M ondal A. 2016. Future changes in rainfall, temperature and reference evapotranspiration in the central India

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Quantification of Suspended Sediment Load by Double Correlation in the Watershed of Chellif (Algeria)

Abstract

The sediment transport in rivers in Algeria is very high. However, it is poorly quantified in some wadis because of the absence and the shortage of data especially the concentration of fine particles and also the unavailability of gauging stations. To fill this gap, a technique for estimating sediment yield, based on data recorded at the gauging station has been developed. The estimation of suspended sediment yield was conducted by a statistical analysis with double correlation on average daily flow and solid concentrations. The results obtained by applying this model to the watershed Chellif are very encouraging because the correlation coefficients of the found models are between 61% and 91% for the first correlation and between 86% and 97% for the second correlation. The estimated quantity of suspended sediment load is between 2.35 and 4.12 million tonnes per year, it appears important; This is due to the vulnerability of the Chellif basin facing erosion, the importance of its area and the importance of fluid flows in wadi Cheliff and its torrential regime. Mention here some of the results and their significance to the study.

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Influence of Prunus spinosa L. shrub on the grassland vegetation in western Romania

Influence of Prunus spinosa L. shrub on the grassland vegetation in western Romania

Prunus spinosa L. is a shrub species that is leading the permanent grassland to the shrubland successional phase. This species has a great occurrence in western Romania and is difficult to control it because it has a great ability of vegetative spreading from roots. The massive presence of this species in some grassland is due mainly to the abandonment and to the diminishing of the livestock. The vegetation was analysed with the linear point-quadrat method. This work has in view to analyse the influence of this species on some vegetation parameters as species richness, number of grasses, legumes and other species, contribution of grasses, legumes and other species, biodiversity indexes (Shannon - H' and Simpson - D and pastoral value VP.

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A Correlational Study on Project Management Methodology and Project Success

Abstract

This non-experimental correlational study extends previous research investigating the relationship between project management methodology and reported project success, as well as the moderating variables of industry and project manager experience. The sample included North American project managers with five years’ experience, 25 years of age or older, and experience with multiple project management methodologies. The survey instrument consisted of 58 questions, utilizing a 5-point Likert scale to record responses. The survey contained three sections, including demographic information, questions related to a successful project, and questions related to a less-than successful (failed / challenged) project. 367 usable responses were received. The examination of the constructs included Pearson’s correlation coefficient as well as linear regression to determine the impact of moderating variables. Results indicated that project management methodology has a weak correlation with reported project success, and this correlation is not moderated by industry nor project manager experience. The results did not align with previously conducted studies, illustrating a need to continue the study of methods impacting success including investigating additional moderating variables.

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Spatial variability of concentration and aggressiveness of precipitation in North-East of Algeria

. Representation of daily rainfall distributions using normalized rainfall curves. International Journal of Climatology. Vol. 16. Iss. 10 p. 1157–1163. K endall M.G. 1975. Rank correlation methods. 4 th ed. London. UK. Charles Griffin pp. 202. K hanchoul K. 2006. Quantification de l’érosion et des transports solides dans certains bassins versants de l’extrème Nord-Est algérien [Quantification of erosion and solid transport in certain watersheds of the extreme north-east of Algeria]. PhD Thesis. Annaba. Badji Mokhtar University pp. 278. K hezazna A., A

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Quantification and study of monthly variation of suspended sediment loads in Tafna basin – Algeria

analysis of outfall drainage basin of Tafna (Algeria). Soil and Water Research (SWR). Vol. 8(2) p. 63–70. B ouchelkia H., B elarbi F., R emini B. 2014. Quantification of suspended sediment load by double correlation in the watershed of Chellif (Algeria). Journal of Water and Land Development. No. 21 p. 39–46. B ouchelkia H., R emini B. 2003. Quantification du transport solide dans le bassin versant algérien du Chellif [Quantification of sediment transport yield in the Algerian basin of Chellif]. Ingénieries. No. 33 p. 45–56. B ouzeria H., G henim

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Effectiveness of Straw Mulch on Infiltration, Splash Erosion, Runoff and Sediment in Laboratory Conditions

sediment load by double correlation in the watershed of Chellif (Algeria). Journal of Water and Land Development. No 21 p. 39–46. Cerdà A. 1999. Parent material and vegetation affect soil erosion in eastern Spain. Soil Science Society of America Journal. No 63 p. 362-368. Choi J, Shin M.H., Yoon J.S., Jang J.R. 2012. Effect of rice straw mulch on runoff and Nps pollution discharges from a vegetable field. In: Soil and water engineering. International Conference of Agricultural Engineering - Cigr -AgEng 2012: Agriculture and engineering for healthier live. Valencia

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Effective Factors on Project Success in Malaysian Construction Industry

-87. Olawumi, T. O. and Chan, D. W. (2019). Building information modelling and project information management framework for construction projects. Journal of Civil Engineering Management, 25(1), 53-75. Pace, M. (2019). A Correlational Study on Project Management Methodology and Project Success. Journal of Engineering, Project, Production Management . Peduzzi, P., Concato, J., Kemper, E., Holford, T. R., and Feinstein, A. R. (1996). A simulation study of the number of events per variable in logistic regression analysis. Journal of clinical epidemiology, 49

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Features of application of the Penman–Monteith method for conditions of a drip irrigation of the steppe of Ukraine (on example of grain corn)

Abstract

In the article presented the features of application and adaptation of the calculation method for determination of evapotranspiration Penman–Monteith. With the purpose of effective use of this method in the practice of a drip irrigation in the steppe zone of Ukraine, on the base of the field’s experiments results were conducted correlation of Kc with a taking into account deviations from standard conditions (on the example of grain corn).

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Evaluation of heavy metal contamination in sediments of the Seybouse River, Guelma – Annaba, Algeria

Abstract

The surface sediments of Seybouse River and its affluents have been studied and assessed to determine their degree of heavy metal contamination (Cd, Pb, Cu, Ni, Zn and Fe). The contamination factor (CF), the contamination degree (CD) and statistical tools (correlation and APC) has been used in assessing: metal contamination, sediment toxicity and to identify the origin of metals which have enriched the sediments. Heavy metals concentrations of sediments are generally heterogeneous and vary according to the metal and the sampling site. The results have been compared to the reference values of the unpolluted sediments and have shown that Seybouse River sediments are more contaminated by Pb, Cd and Zn respectively. CF values indicate moderate to considerable contamination for most stations. CD values show that the most toxic sediments are located mainly at the estuary and downstream of large agglomerations. The matrix correlation between the metallic elements shows a very strong correlation between Pb, Cd, Cu and Zn indicating that they have a similar source. These different metallic elements appear as traces of anthropogenic pollution. Despite using wastewater treatment plants as protective measures, Seybouse River pollution is remaining a big issue and more efforts has to be done by local authorities.

Open access