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Search Results: 1 - 10 of 8917 matches for " Athambawa Mohamed Razmy "
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Effect of Sample Size on the Control Limits of Exponentially Weighted Moving Average Distance Square Scheme  [PDF]
Athambawa Mohamed Razmy
Open Access Library Journal (OALib Journal) , 2016, DOI: 10.4236/oalib.1102663
Abstract:
In the series of quality monitoring schemes with exponentially weighted moving average, the exponentially weighted moving average distance square scheme was introduced for joint monitoring of process mean and variance. This scheme claims that it has a special feature that the control limits of the scheme are independent of sample size and therefore it gives more freedom to the users. However, this claim was not studied in detail. In this study, the control limits were found for this scheme through simulations, for different sample sizes with different combination of other scheme parameters. This study concludes that the control limits for designing this scheme are independent of sample size.
Significance of Initial Maternal Hemoglobin Concentration during Pregnancy in Birth Weight and Preterm Delivery in Sri Lanka  [PDF]
Athambawa Mohamed Razmy
Open Access Library Journal (OALib Journal) , 2016, DOI: 10.4236/oalib.1102725
Abstract:
Objective: The study was conducted to investigate the influence of initial hemoglobin (Hb) concentration of Sri Lankan pregnant mothers on baby’s birth weight and preterm delivery. Methods: For this retrospective study, 3867 primigravid pregnant women in Sri Lanka were followed till they deliver the baby. Sampling method was cluster sampling where all the pregnant mothers giving singleton birth in the selected 15 health division were followed for three years. Mothers’ initial Hb concentration, weight gain during the pregnancy and neonatal outcomes were assessed. Results: Severe iron deficiency anemia at the initial stage of pregnancy had 3.9 - 14.4 folder higher relative risk of low birth weight (LBW) and 3.0 - 8.1 folder higher relative risk of preterm delivery at 95% confidence interval. The minimum incidence of preterm delivery and maximum weight gain of mothers occurs in association with an initial Hb concentration of 105 - 125 g/L. Conclusion: The excess level of initial iron content at pregnancy does not contribute for any adverse effect on pregnancy outcome as like in the later part of pregnancy and therefore supplement of iron during the initial pregnancy for mothers can be carried out regardless of whether the mother is anemic.
Obstetric and Perinatal Outcomes of Teenage Pregnancies: A Cross-Sectional Study  [PDF]
Ahamed Lebbe Failur Rahman, Athambawa Mohamed Razmy, Mohammed Muzammil Al-Ameen Rizath
Open Access Library Journal (OALib Journal) , 2017, DOI: 10.4236/oalib.1103839
Abstract:
The teenage pregnancy is still preferred in different part of the world against the advice of the medical practitioners. This study aimed to describe the obstetric and perinatal outcomes of the teenage mothers and to compare these with outcomes of the adult mothers. For this purpose, 762 teenage and 756 adult mothers were followed in the eastern region of Sri Lanka for 21 months. This study found that the premature birth was the only negative perinatal outcome directly related to teenage mothers. All other negative pregnancy outcomes associated with teenage pregnancy were caused by the factors which are prevailing in higher percentages among teenagers such as low BMI and less number of parity. No differences in occurrence of small to date (IUGR), perinatal complications and lower segment caesarean section (LSCS) were observed between teenage and adult mothers. Finally, this study concludes the teenage pregnancy can be accepted for the mothers with higher BMI if the risk for premature birth is controlled.
Prevalence of Diabetic Retinopathy among Diabetics: A Hospital Based Study at Ashraff Memorial Hospital, Kalmunai  [PDF]
Mohammed Muzammil Al-Ameen Rizath, Jayasiri Deshapriya Dias, Hameem Mohammed Ismy Mohammed, Mohamed Meerasahib Maroozathul Ilahi, Athambawa Mohamed Razmy
Open Access Library Journal (OALib Journal) , 2015, DOI: 10.4236/oalib.1102230
Abstract: Diabetic Retinopathy and diabetics are two highly associated severe diseases in human. This study assesses the risk of getting Diabetic Retinopathy among the Diabetic patients in the Kalmunai region. In this hospital based cross sectional study, all the diabetic patients who were attending to the diabetic clinic of the Ashraff memorial hospital from January 2014 to December 2014 were screened for Diabetic Retinopathy and their demographic details were recorded. Obtained information was analyzed for estimating the risk for Diabetic Retinopathy among the diabetic patients and it was estimated as 13.16%. No difference in risk of getting Diabetic Retinopathy was observed among different age group, educated level and gender. Risk of getting Diabetic Retinopathy increases with the increase of the duration suffered by the diabetic. The relative risk of getting Diabetic Retinopathy for patients with diabetic for more 12 years is 3.55 times greater compared to the fresh diabetic patients.
Comparison of Rectangular and Elliptical Control Region EWMA Schemes for Joint Quality Monitoring  [PDF]
A. M. Razmy, T. S. G. Peiris
Open Journal of Statistics (OJS) , 2014, DOI: 10.4236/ojs.2014.411091
Abstract: The exponential weighted moving average technique used in process mean and variance monitoring charts was combined by Gan in 1997 and proposed two combined joint monitoring schemes one with rectangular control region and the other with elliptical control region. Performance of these two schemes may very depend on the shifts in mean or variance to be detected quickly. In this paper, performances of these two schemes are evaluated with respect to the average run length properties. The results reveal that elliptical scheme is little faster in detecting the shifts in process mean and increase in variance within a limit.
Association between the Performance of the University Security Officers and Their Physical Fitness: A Case Study  [PDF]
A. M. Razmy, A. Jabeer
Open Access Library Journal (OALib Journal) , 2017, DOI: 10.4236/oalib.1103239
Abstract:
Physical fitness is considered to be a vital factor for performing any duty. Specially in the university security service, this factor is given more priority when employing the officers. In this case study, association between the performance of the university security officers and their physical fitness was studied. All male university security officers in the permanent and contract category working in the South Eastern University of Sri Lanka were assessed for their performance and their physical fitness were measured in terms height, weight, blood pressure, physical appearance, neck circumference and record of long lasting diseases. This study found no performance difference between permanent and contract employees but the variation in performance is much higher among the permanent employees. No relationship was established between performance and age or BMI. The physical appearance of the officer is a much influencing factor of determining the performance.
The Impact of Board Members Involvement on Return on Equity (ROE)  [PDF]
Tochukwu Christian Nwokwu, A. M. C. P. Atapattu, Azeez A. Athambawa
Modern Economy (ME) , 2019, DOI: 10.4236/me.2019.104090
Abstract: From a developing economy, the impact of board members involvement on return on equity has been analyzed. The current study uses the correlation and regression models to analyze publicly available data of which the sample firms were taken from 11 sectors that are quoted in the Nigerian Stock Exchange for one financial year. Several diagnostic tests have been applied to justify the validity of the results. The empirical investigations reveal that two of the independent variables have significant impact on return on equity. This research paper in its originality is the first of its kind in a developing economy like Nigeria.
The Effects of Residual Blood of Carcasses on Poultry Technological Quality  [PDF]
Bourbab Mohamed, Idaomar Mohamed
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.310181
Abstract: The objective of this work is to show the effect of residual blood on the quality of chicken meat, work based on the hypothesis that increasing the concentration of residual blood would explain the observed quality degradation by several authors. Lots of chickens are killed with two different types of slaughter: Slaughter without stunning for a maximum flow of blood or bleeding perfect PS, shooting seals slight lead to keep almost all blood from the carcass or bleeding IS flawed. To prove the residual blood factors that are responsible for high pHu level and high values of (L* A* B*) in poultry, this study compares the pHu level and values of (L* A* B*) in poultry both perfectly and imperfectly bled. Samples from imperfectly bled carcasses show a high value average number of A* = 12.68 and B* = 16.85; and L* = 54.09 VS the average number of A* = 8.50 and B* = 14.43 and L* = 50.27. At 3℃ storage temperature, the average pHu of perfectly bled poultry was (5.7) which was significantly (P < 0.01) lower than the average pHu of imperfectly bled poultry (6.08). At 7℃ storage temperature, the average pHu of perfectly bled poultry was (6.07) which was significantly (P < 0.05) lower than the average pHu of imperfectly bled one (6.27). We found out the effect of season on the results of pHu measures, so we conducted aanalysis of pHu in summer and winter. Residual blood of the poultry is responsible for high values of (L* A* B*) and high values of pHu therefore the deterioration of the poultry Colour.
Monitoring of Temporal and Spatial Changes of Land Use and Land Cover in Metropolitan Regions through Remote Sensing and GIS  [PDF]
Mohamed Ali Mohamed
Natural Resources (NR) , 2017, DOI: 10.4236/nr.2017.85022
Abstract: The use of remote sensing techniques and subsequent analysis by means of geographical information system (GIS) offers an effective method for monitoring temporal and spatial changes of landscapes. This work studies the urbanization processes and associated threats to natural ecosystems and resources in the metropolitan areas of Berlin and Erlangen-Fürth-Nürnber?Schwabach (EFNS). To compute the land use/cover (LULC) of the study areas, a supervised classification of “maximum likelihood” using Landsat data for the years of 1972, 1985, 1998, 2003, and 2015 is used. Results show that the built-up area is the dominant land use in both regions throughout the study period. This land use has increased at the expense of green and open areas in EFNS and at the expense of agricultural land in Berlin. Likewise, 5% of forest in EFNS is replaced with urban infrastructure. However, the amount of forest in Berlin increased by 3%. While EFNS experienced relatively big changes in its water bodies from 1972 to 1985, changes in water bodies in Berlin were rather slight during the last 40 years. The overall accuracy of our remotely sensed LULC maps was between 88% and 94% in Berlin and between 85.87% and 87.4% for EFNS. The combination of remote sensing and GIS appears to be an indispensable tool for monitoring changes in LULC in urban areas and help improving LU planning to avoid environmental and ecological problems.
Analysis of Digital Elevation Model and LNDSAT Data Using Geographic Information System for Soil Mapping in Urban Areas  [PDF]
Mohamed Ali Mohamed
Natural Resources (NR) , 2017, DOI: 10.4236/nr.2017.812047
Abstract:
This study applies digital analysis methods of topographic data derived from digital elevation models (DEMs) and Landsat remotely sensed spectral data using GIS tools to evaluate the quality and limitations of the morphometric parameters (terrain attributes: TAs). This aims to check its suitability for digital soil mapping (DSM) and survey in urban areas at the target scale 1:50,000. This scale represents the standard scale level for compiling soil inventories within all German states. The study is conducted on an urban area of 112.68 km2 in the southwest part of the state of Berlin in Germany. These relief units are the basis for determining the soil mapping units at the scale of 1:50,000. The generated preliminary soil map was compared to soil maps made using traditional soil survey methods. For the mainly natural soils, the equivalence area is 94.91%, and for the anthropogenic soils, the equivalence area is 95.34%. The proposed methodology is adequate for preliminary mapping of soil units based on the digital derivation of TAs. Landsat scenes are spatially explicit, physical representations of environmental covariates on the land surface. The free DEM-ASTER in combination with Landsat OLI images is found to be the appropriate model to represent the terrain surface and derive the TAs for environmental modeling and fitting of derivation the relief units and their topography features. However, the 30 m spatial resolution and the fairly coarse spectral resolution of DEMs and Landsat images limit their utility for digital soil mapping at this scale in urban areas with little topographic variation.
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