Diyala Journal of Human Research

Edge detection is a widely studied problem in image processing and there are several well-developed edge detection algorithms in that domain. These algorithms are inherently scalable, localized and distributed in nature, with same computational approach applied at each pixel. Every pixel utilizes the values of pixels in its local neighborhood. Therefore application of these image processing algorithms in large sensor networks for solving the problem of edge detection is tempting. But applying those techniques directly in sensor network domain is not possible as unlike regular pattern of pixels in an image the sensors locations are random within the domain. This is due to the random deployment of sensor nodes over the geographical area.





In this work we propose an approach to modify these image processing techniques, taking into consideration the randomness of sensor nodes in the sensor field, to solve the boundary detection problem in sensor networks. A sensor network could be deployed in a region where there exist distinct sensing environments. To detect the demarcation of this boundary is the primary focus of our work. we propose an approach to modify the existing gradient based edge detection techniques in image processing domain to solve the boundary detection problem in sensor networks. Since the sensor readings are spatially correlated, in order to moderate noisy measurements, we combine information from neighboring sensors in our scheme. We give anon-weighted neighborhood approach and a weighted neighborhood approach to interpolate the missing sensor values. Taking the radio range (R) and the density of deployment of the sensor nodes(D) as the two parameters we have analyzed the performance of our approach using different simulation environments and different performance metrics. Our analysis shows that the performance highly depends upon the two parameters R and D. With high density of deployment performance achieved increases. Finally we have defined a metric to achieve optimization in the choice of radio range (R) for a particular density(D).

Theis study was concerned with the antimicrobial effect in vitro of aqueous and ethanolic extracts of three species of plants (Chlorocyperus rotundus L., Dianthus chinensis L.and Glycyrrhiza glabra L.)were assayed against four species of pathogenic bacteria (Escherichia coli ,Proteus mirabilis, Staphylococcus aureus and Streptococcus pyogenes ).All isolates were sensitive to aqueous and ethanolic extracts of( Dianthus chinensis L.)singly and all combination except aqueous extracts of (Chlorocyperus rotundus L.,Dianthus chinensis L.and Glycyrrhiza glabra L.)did not inhabit any of the test organisms.The aqueous and ethanolic extracts of (Chlorocyperus rotundus L. singly did not inhibit of gram-negative or ganism , so the aqueous and ethanolic extracts of(Glycyrrhiza glabra L.) singly did not inhibit gram-positive organism .The highest inhibition zone of 16 mm was observed with a combination of extracts on Streptococcus pyogenes.


key words: Antimicrobic ,Concoctions,Pathogenic ,susceptibility.

Prevalence of celiac disease in Diyala children and adolescents with short stature


The aim of the present study was to determine the prevalence of celiac disease (CD) in children and adolescences of short stature in diyala governorate. A total of 80 short stature patients (65% males) their ages were between 4-17 years of with or without gastrointestinal symptoms were studied over three years (2003-2006). Routine physical and laboratory examinations performed to exclude other causes of short stature and those with negative workup were studied with endoscopic intestinal biopsy. Seventeen 17 (21.25%) of them showed histological abnormalities compatible with CD,70.58% of them were males. There was no statistically significant difference in anthropometric characters between patients with CD and short stature and those with short stature of undetermined cause .82% of patients with CD showed abnormal duodenal mucosa endoscopically and 82.35% of them they have marsh's grade three histopathological changes. Those with normal histopathological results are referred for endocrinological studies.


Conclusions: There was high prevalence of celiac disease among short stature children and adolescents in diyala governorate.

The study of change in the location of the geomagnetic north pole for the epoch (1900-2005) by using spherical harmonic coefficient.





In this paper we study the nature of the location change of geomagnetic north pole (GMNP) for epoch (1900-2005). Using the spherical harmonic coefficient defining the International Geomagnetic Reference Field Model (IGRF) for the (22) epochs (1900-2005), the coordinates of the (GMNP) (longitude and latitude) were computed. Also, I study the secular variation of total intensity () and declination (D) (the angle between the horizontal component of the geomagnetic field and true geographic north ) at the geomagnetic north pole location (lat 79.73°N, long 71.82°W , year 2005), we found that the rate of change of field intensity (F) is roughly (0.04-0.06% per year).The declination change from (14o west ) to (25o east ).

Markov processes are considered an appropriate for queuing system. As they suppose that unites arrival process to the system followed a certain distribution and the service times should be separate form each others. This means that each time is considered