Dynamic Hilbert clustering based on convex set for web services aggregation

In recent years, web services run by big corporations and different application-specific data centers have all been embraced by several companies worldwide. Web services provide several benefits when compared to other communication technologies. However, it still suffers from congestion and bottlenecks as well as a significant delay due to the tremendous load caused by a large number of web service requests from end users. Clustering and then aggregating similar web services as one compressed message can potentially achieve network traffic reduction. This paper proposes a dynamic Hilbert clustering as a new model for clustering web services based on convex set similarity. Mathematically, the suggested models compute the degree of similarity between simple object access protocol (SOAP) messages and then cluster them into groups with high similarity. Next, each cluster is aggregated as a compact message that is finally encoded by fixed-length or Huffman. The experiment results have shown the suggested model performs better than the conventional clustering techniques in terms of compression ratio. The suggested model has produced the best results, reaching up to 15 with fixed-length and up to 20 with Huffma

A new species of Solanum L.(Solanaceae) from Baghdad city Iraq

Solanum americanum is a new annual shrubby plant seen recently in fields and gardens of Baghdad city. A new species is described and illustrated, inhabit wet or semi dry places and have consequently a mesophytic habit. A detailed morphological study of the stems, leaves, Inflorescence, flower, male and female reproductive organs and fruits has been done, revealed several interesting taxonomic characteristics, which have not previously been studied in Iraq. Also, anatomical studies reveals constant taxonomical characteristics such as the presence of anthocayanine in outer row of epidermis, distinct chlorenchyma in whole cortex, the wide pith of stems, and presence of distinct mesophyll that differentiated into palisade layer and spongy layer in leaves, amphistomatic bearing anomocytic stomatal complexes that are significant and constant characteristics in species studied

EFFECTIVENESS OF E-BOOK IN IMPROVING OMANI KINDERGARTEN KIDS COMPREHENSION AND MOTIVATION TOWARDS STORIES READING

Nowadays technology became an affective and worthy tool for learning and acquisition of knowledge. Although e-books have many facilities and tools which motivate children to read and develop their reading skills, most of the early childhood institutions in Oman are not using e-books for teaching children. Therefore, this study aims to investigate the difference between using e-books and printed books to motivate kindergarteners to read and enhancing their understanding of the text. This study compares between experimental group which use e-books and control group which use printed books. Findings show that there are no significant differences between the two groups with regard to motivation. However, children who read from paper books got better scores in the comprehension test. The study concludes with some future recommendations.  Article visualizations

The impact of nano fertilization and salicylic acid on growth, yield and anti-oxidant contents in rocket plant under salt stress

Saabunud / Received 20.01.2022 ; Aktsepteeritud / Accepted 24.04.2022 ; Avaldatud veebis / Published online 24.04.2022 ; Vastutav autor / Corresponding author: Duraid K. A. Al-Taey; [email protected] investigation aimed to study the effect of organic fertilizers, nano-fertilizers and salicylic acid on the growth and yield of rocket (Eruca sativa L.) and the content of active compounds and antioxidants when the plants were exposed to salt stress. The experiment was conducted using a randomized complete block design (RCBD) according to the split-plot system. The main factor was water quality (1.2 dS m–1 and 8 dS m–1). While the combination treatments of Nano fertilizer, Salicylic acid and poultry manure were distributed in sub-plots and each treatment included three replicates. The treatments irrigated with saline water showed a reduction of glucosinolate and ascorbate contents (58 μg g–1 and 105.71 μg g–1, respectively). Salinity led to an increase in glutathione and proline in the leaves (1146 and 2.2 μg g–1, respectively), while the fertilization treatments (poultry manure + nano-NPK; poultry manure + salicylic acid + nano-NPK) resulted in an increase in the glucosinolate content of the leaves under salt stress (85.6 and 89.2 μg g–1, respectively). The nano-NPK treatment achieved a high value of the leaves’ ascorbic acid content under the unstressed conditions (166.73 μg g–1), while the salicylic acid + nano-NPK treatment achieved the highest value of ascorbic acid under salt stress (137.4 μg g–1). The combination of salicylic acid + poultry manure + nano-NPK obtained the highest value of glutathione content in the leaves (1950 μg g–1) under the stress conditions. There is a positive correlation between salt stress and glutathione + proline, while the salt stress condition had a negative effect on glucosinolate, ascorbate and yield

Behçet’s Disease : A Clinical Review

يُعد مرض بهجت من الاضطرابات الالتهابية الجهازية النادرة التي تنتشر بمسارات مزمنة متكررة غير معروفة الاسباب. تقترح الدراسات الحالية ان مرض بهجت ممكن ان يكون بسبب المناعة الذاتية للجسم ضد تجاه بعض العوامل المعدية او العوامل البيئية لدى الاشخاص المؤهلين وراثيا للاصابة. يتم تمييز المرض غالبا بوساطة التهاب الفم , القرحة التناسلية والتهاب العنبية المزمن ,وكلها تكون بمثابة "بصمة" للمرض . ومع ذلك، يمكن أن تتأثر العديد من الأعضاء الأخرى بما في ذلك الأجهزة الوعائية والعصبية والعضلية الهيكلية والجهاز الهضمي. يحدث مرض بهجت بشكل متكرر في السكان الأوراسيين على طول الطريق التجاري القديم المعروف باسم "طريق الحرير" الذي يمتد من شرق آسيا إلى حوض البحر الأبيض المتوسط. يتم تشخيص مرض بهجت من خلال المعايير السريرية فقط ويتطلب استبعاد التشخيصات الأخرى بناءً على الاعراض السريرية. لا توجد فحوصات مختبرية خاصة بهذا المرض. غالبًا ما يؤدي هذا المرض النادر إلى العمى واعتلالات جهازية مميتة. تشمل الأسباب الرئيسية للوفاة أمراض الأوعية الدموية الرئيسية واعتلالات الجهاز العصبي المركزي. تُستخدم الكورتيكوستيرويدات بشكل شائع لعلاج المظاهر السريرية لـمرض بهجت مع أدوية مثبطة للمناعة. من العلاجات التي سجلت نجاحا في علاج مرض بهجت هو TNF مثل Infliximab و Etanercept و Adalimumab .Behcet’s disease (BD) is a rare relapsing systemic inflammatory disorder with a chronic, relapsing-remitting course of unknown etiology, current knowledge suggests that BD could follow an autoimmune process triggered by an infectious or environmental agent in genetically predisposed individuals. BD has been hallmarked predominantly by oral aphthosis, genital ulcers, and chronic relapsing bilateral uveitis, all of which represent the “stigmata” of disease. However, many other organs including the vascular, neurological, musculoskeletal, and gastrointestinal systems can be affected. BD occurs most frequently in Eurasian populations along the ancient trading route known as the “Silk Road” which extends from eastern Asia to the Mediterranean basin. The diagnosis of BD is only supported by clinical criteria and requires the exclusion of other diagnoses based on clinical presentation. There are no pathognomonic laboratorial findings of BD. This rare disease often leads to blindness and fatal systemic involvement. Main causes of death include major vessel disease and central nervous system involvement. Corticosteroids are commonly used to treat clinical manifestations of BD in combination with immunosuppressant drugs. Tumor necrosis factor (TNF)-blocking agents such as Infliximab, Etanercept, and Adalimumab have been reported to have success in patients with BD.&nbsp

A practical comparison between the methods of determining the focal length of a convex lens

This study was conducted to determine the best method for determining the focal length of the lens of the lens, and the effect of the value of the thickness of the lens and the focal length in determining the type of method to be followed in the laboratories of optics to obtain the most accurate values ​​and the easiest and fastest. Three methods were chosen to determine the focal dimension, the most used methods in this laboratory, and several convex lenses (with different focal lengths) were used with each method. The software used in its version (R2013a) was used to draw and represent the data

New artificial neural network design for Chua chaotic system prediction using FPGA hardware co-simulation

This study aims to design a new architecture of the artificial neural networks (ANNs) using the Xilinx system generator (XSG) and its hardware co-simulation equivalent model using field programmable gate array (FPGA) to predict the behavior of Chua’s chaotic system and use it in hiding information. The work proposed consists of two main sections. In the first section, MATLAB R2016a was used to build a 3×4×3 feed forward neural network (FFNN). The training results demonstrate that FFNN training in the Bayesian regulation algorithm is sufficiently accurate to directly implement. The second section demonstrates the hardware implementation of the network with the XSG on the Xilinx artix7 xc7a100t-1csg324 chip. Finally, the message was first encrypted using a dynamic Chua system and then decrypted using ANN’s chaotic dynamics. ANN models were developed to implement hardware in the FPGA system using the IEEE 754 Single precision floating-point format. The ANN design method illustrated can be extended to other chaotic systems in general

Field-programmable gate array design of image encryption and decryption using Chua’s chaotic masking

This article presents a simple and efficient masking technique based on Chua chaotic system synchronization. It includes feeding the masked signal back to the master system and using it to drive the slave system for synchronization purposes. The proposed system is implemented in a field programmable gate array (FPGA) device using the Xilinx system generator tool. To achieve synchronization, the Pecora-Carroll identical cascading synchronization approach was used. The transmitted signal should be mixed or masked with a chaotic carrier and can be processed by the receiver without any distortion or loss. For different images, the security analysis is performed using the histogram, correlation coefficient, and entropy. In addition, FPGA hardware co-simulation based Xilinx Artix7 xc7a100t-1csg324 was used to check the reality of the encryption and decryption of the images

A practical comparison between the methods of determining the focal length of a convex lens

This study was conducted to determine the best method for determining the focal length of the lens of the lens, and the effect of the value of the thickness of the lens and the focal length in determining the type of method to be followed in the laboratories of optics to obtain the most accurate values ??and the easiest and fastest. Three methods were chosen to determine the focal dimension, the most used methods in this laboratory, and several convex lenses (with different focal lengths) were used with each method. The software used in its version (R2013a) was used to draw and represent the data

Use of (Saccharomyces cerevisiae) Mutant in Bioremediation of Some Heavy Metals

The study aimed to use of baker’s yeast Saccharomyces cerevisiae in Bioremediation of some heavy metals and improving its capability by mutation. The dried baker's yeast from Aldnaamaya China Company used in this study. The yeast subjected to serial diagnostic tests to ensure its belongings to S. cerevisiae. To improve the ability of the yeast to remove the metals, it was mutated by Nitrosoguanidine, and among different mutants, it was found that three of them designated as Sc6-1, Sc6-2 and Sc6-3, were more resistant to the antifungal cycloheximide in a concentration of 5 and 10 µg/ ml. These mutants were selected to study their efficiency to remove metals under the specific circumstances of attachment 10 minutes, pH 6, temperature 25○C, the stirring speed 150 rpm/ min, by using an inoculums size 1×106 cells/ ml in a solution containing 1mg/L of from each metal. it was found that the mutant Sc6-2 has gain an excellent efficiency to remove of chromium, nickel, cobalt, cadmium, lead, iron and copper in combined at a rate 72.23%, while the removal efficiency of these elements by the other mutants Sc6-1 and Sc6-3 were 64.67% and 65.37% respectively