Multilevel MPSoC Performance Evaluation: New ISSPT Model

To deploy the enormous hardware resources available in Multi Processor Systems-on-Chip (MPSoC) efficiently, rapidly and accurately, methods of Design Space Exploration (DSE) are needed to evaluate the different design alternatives. In this paper, we present a framework that makes fast simulation and performance evaluation of MPSoC possible early in the design flow, thus reducing the time-to-market. In this framework and within the Transaction Level Modeling (TLM) approach, we present a new definition of ISS level by introducing two complementary modeling sublevels ISST and ISSPT. This later, that we illustrate an arbiter modeling approach that allows a high performance MPSoC communication. A round-robin method is chosen because it is simple, minimizes the communication latency and has an accepted speed-up. Two applications are tested and used to validate our platform: Game of life and JPEG Encoder. The performance of the proposed approach has been analyzed in our platform MPSoC based on multi-MicroBlaze. Simulation results show with ISSPT sublevels gives a high simulation speedup factor of up to 32 with a negligible performance estimation error margin

Antibacterial Activity of Syrian Capparis spinosa. (Capparidaceae) Fruits and Roots

The ethanolic extract of Capparis Spinosa. Roots and Fruits were tested for their antibacterial activity against four species of bacteria, Bacillus subtilis, Escherichia coli, Klebsiella sp.and Staphylococcus aureus using disc diffusion technique. The extract concentrations of ethanolic roots and fruits extracts used were 0 (control), 125, 250, 500 and 1000 ppm in triplicates along with standard antibiotic, Ciprofloxacine (5 μg), Gentamycine (10 μg). Comparatively, ethanolic roots extracts showed higher activity than ethanolic fruits extracts. The results showed that In 1000 ppm ethanolic roots extract, a maximum of 3.2 cm ZI was observed against Staphylococcus aureus followed by 2.3 cm against Escherichia coli. The maximum ZI of 2.1 cm was recorded in 1000 ppm ethanolic extract of fruits against Pseudomonas aeruginosa followed by 1.5 cm against Bacillus subtilis. DOI: 10.7176/JBAH/9-18-02 Publication date:September 30th 201

Through-thickness microstructure and mechanical properties of electron beam similar welded AISI 316L stainless steel and dissimilar welded AISI 316L / Ti6Al4V

Through thickness microstructure and mechanical properties of defect-free electron beam welded 20 mm thick AISI 316L austenitic stainless steel has been investigated as a function of beam power. The weld microstructure is characterised by a columnar and equiaxed dendritic ferrite in an austenite matrix. The dendritic structure was finer at the bottom of the weld zone. A microstructural boundary called “Parting” was seen along the weld centreline. Tensile tests, using a digital image correlation technique, demonstrated that the highest strain was concentrated in the fusion zone. The bottom section of the weld metal exhibited a yield strength of about 14 – 52 MPa higher than the top section. The ultimate tensile strength in the bottom of the weld was also about 4% higher than the top. The final fracture was detected in the parting region. It was observed from the EBSD scan that the grains in the weld zone contained a weak orientation and showed a high Schmid factor intensity with interception between some strong grains and soft grains at the weld centreline boundary. This explains the high weld ductility and the failure to happen in the parting region. Dissimilar welding of 20 mm thick AISI 316L stainless steel to TiAl6V4 using electron beam welding process was carried out. A successful joint was possible through using of copper sheet with 1.5 mm thick as a transition layer between the two metals. Preheating the weld samples was performed to lower the heat input and reduce the residual stresses. A double pass welding technique was applied to achieve full weld penetration. The weld microstructure was studied by SEM, EDS and XRD. The sensitivity of the microstructure to cracking was evaluated by a microhardness test of the weld cross-section. The weld region near the stainless steel contained Fe and Cu in solid solution. While the weld area near the titanium alloy characterised by the copper solid solution with Cu-Ti and Cu-Fe- Ti intermetallic phases. Ti-Fe intermetallic compounds was suppressed and replaced by relatively soft Cu-Ti intermetallics, which significantly improved the joint toughness. However, the formation of Ti-Cu at the Ti/Cu interface makes this region still susceptible to cracking

Modèles D’estimation De L’émission Du Méthane Entérique Des Animaux D’élevage Au Maroc

Enteric CH4 emissions have been of great scientific interest as they represent a real energy loss for livestock and are also responsible for global warming. The objective of this study is to measure enteric methane emissions in farm animals, and then develop models for estimating quantities emitted based on the amount of dry matter ingested (MSI). Holstein cows (n = 38) received dietary rations of 50% forage and 50% feed concentrate, and a linear regression model was developed to predict CH4 production per animal (g). CH4 (animal / day) from the amount of dry matter ingested and the equation obtained was as follows: Y = 19.05X. Here, Y is the amount of CH4 (g CH4 / cow / day) and X is the amount of ingested dry matter (kg), with R² = 0.91, r = 0.97, and RMSPE = 5.53%. For small ruminants (n = 22), three dietary levels were used and methane production was measured. In addition, the equation obtained was: Y = 12.21 X with R² = 0.81, r = 0, 91 and RMSPE = 15.80%. In camelins (n = 12) and equines (n = 10), only one food level was used and methane measurements did not develop an estimation model. However, mean values of methane production were determined and they corresponded to 11.41 g CH4 / kg MSI in camels and 2.18 g CH4 / kg MSI in horses

Elastic Process: A Framework for Joint Disaggregation of Memory and Computation in Linux

Scaling is essential in cloud computing to accommodate the variable need for resourcesby different applications. Scaling is always associated with the challenge of distributing resources, and this challenge usually stems from the fact that the underlying operating system is designed to be monolithic. Past efforts have attempted to break the monolithic design of the operating system like &ldquo;ElasticOS&rdquo; and &ldquo;LegoOS&rdquo; and introduce distributed resource management primitives to the operating system. However, previous efforts either suffered from performance degradation or faced a severe development challenge that requires modifying the complex monolithic source code of Linux kernel. We propose Elastic Process; an auto scaling framework with a new approach to achieve joint disaggregation of memory and compute primarily in userspace. By using tools like &ldquo;Ptrace&rdquo; and &ldquo;CRIU&rdquo; we were able to build a prototype that demonstrates joint disaggregation of memory and computation. Our test results on macro applications and off-the-shelf application shows execution time performance improvement as well as network traffic reduction when compared to remote swap approach. Our results for macro application also shows more performance improvement when using multiple threads.</p

ВИБІР АДСОРБЕНТУ З ВІДХОДІВ АПК ТА НАНОТРУБОК ДЛЯ БЕЗПЕКИ РОСЛИННОЇ ОЛІЇ

The aim of this investigation is to find the most effective adsorbent that provides the highest level of removal the peroxide compounds and benzopyrene from sunflower oil using the surfactants. In the technology of sun flower oil refining the particular place is allocated for the absorption refining that lets considerably decrease the content of substances are soluble in the vegetable oils – pigments, waxes, the rests of phospholipids, soaps and oxidation products (primary and secondary ones), metal ions as well, and in such a way increase considerably the oil quality and improve its subsequent refinement. The effectiveness of refinement by absorption is determined with choice of the absorbent in considerable extent, but such a choice is not sufficient in Ukraine, and that because this study is dedicated to the absorbent development on the base of sun flower seeds wastes left after their treatment – their shells. The raw materials of these wastes will be exposed to the pyrolysis stage similar to the nanotubes obtained from coke pyrolysis. This carbon – containing product has been tested as absorbent in order to increase the quality of sunflower oil. &nbsp;Целью исследования было выявление наиболее эффективного адсорбента, который обеспечивал бы большую степень выведения перекисных соединений и бенз(а)пирена ПАВ из подсолнечного масла. В технологии рафинации подсолнечного масла особое место предназначено адсорбционной очистке, которая позволяет значительно снизить содержание растворенных в масле веществ – пигментов, восков, остатков фосфолипидов, а также мыл, продуктов окисления (первичных и вторичных), йонов металлов и таким образом значительно повысить качество масел и улучшить его дальнейшую переработку. Эффективность адсорбционного очищения в значительной мере определяется выбором адсорбента, выбор которых на Украине недостаточен, поэтому работа посвящена разработке адсорбента на основе отходов переработки семян подсолнечника-лузги. Сырье из отходов проходит стадию пиролиза так же как и нанотрубки, которые получают при пиролизе кокса. Этот углеродсодержащий продукт испытывался в качестве адсорбента для повышения качества подсолнечного масла.Метою дослідження є виявлення найбільш ефективного адсорбенту, що забезпечує найбільший ступінь виведення перекисних сполук та бенз(а)пірену ПАВ із соняшникової олії. У технології рафінації соняшникової олії особливе місце визначено адсорбційному очищенню, яке дозволяє значно знизити вміст розчинених у рослинних оліях речовин – пігментів, восків, залишків фосфоліпідів, а також мила, продуктів окиснення (первинних та вторинних), іонів металів і, таким чином,&nbsp; значно підвищити якість олії та покращити її подальшу переробку. Ефективність адсорбційного очищення значною мірою визначається вибором адсорбенту, вибір яких на Україні ще недостатній, тому робота присвячена розробці адсорбенту на основі відходів переробки насіння соняшника – його лушпиння. Сировина з відходів проходить стадію піролізу як і нанотрубки, що отримують при піролізі коксу. Цей вуглецевміщуючий продукт випробувався як адсорбенту для підвищення якості соняшникової олії. &nbsp

The etiopathogenesis of uterine leiomyomas: A review

To summarize the available literature data on the etiopathogenesis of uterine fibroids as well as the risk factors for the development of this diseas

Transition in the Fractal Geometry of Arctic Melt Ponds

During the Arctic melt season, the sea ice surface undergoes a remarkable transformation from vast expanses of snow covered ice to complex mosaics of ice and melt ponds. Sea ice albedo, a key parameter in climate modeling, is determined by the complex evolution of melt pond configurations. In fact, ice–albedo feedback has played a major role in the recent declines of the summer Arctic sea ice pack. However, understanding melt pond evolution remains a significant challenge to improving climate projections. By analyzing area–perimeter data from hundreds of thousands of melt ponds, we find here an unexpected separation of scales, where pond fractal dimension D transitions from 1 to 2 around a critical length scale of 100 m2 in area. Pond complexity increases rapidly through the transition as smaller ponds coalesce to form large connected regions, and reaches a maximum for ponds larger than 1000 m2, whose boundaries resemble space-filling curves, with D ≈ 2. These universal features of Arctic melt pond evolution are similar to phase transitions in statistical physics. The results impact sea ice albedo, the transmitted radiation fields under melting sea ice, the heat balance of sea ice and the upper ocean, and biological productivity such as under ice phytoplankton blooms

Engineering a microbiosphere to clean up the ocean – inspiration from the plastisphere

Plastic is a ubiquitous material that has become an essential part of our lives. More than one hundred million tons of plastic has accumulated in the world’s oceans as a result of poor waste management. This plastic waste gradually fragments into smaller pieces known as microplastics and nanoplastics. These small plastic particles can cause significant damage to marine ecosystems, and negatively impact human health. According to a recent review of international patents, the majority of ocean-cleaning inventions are limited to microplastics larger than 20 μm. Furthermore, such technologies are ineffective for nanoplastics, which measure less than 1000 nm, or even fibrous plastics. Alternative solutions need to be considered for the large-scale in situ removal of microplastics and nanoplastics from the ocean. In this perspective, we present the concept of engineering a microbial ecosystem, which we term the microbiosphere. The concept is based on key observations that have been made for natural plastic-based ecosystems known as plastispheres. These observations relate to the solid support material, self-sustainability, attachment to plastic, degradation of plastic, and risk of pathogenicity. Inspiration can be taken from the plastisphere whereby a novel microbial ecosystem could be designed and engineered as a bioremediation tool to rid the ocean of micro- and nanoplastics. Such an engineered system could outcompete pathogens for marine plastic waste and potentially reduce the risk of infectious diseases

Attitudes Towards School and Addiction to Social Networking Sites Among High School Students in Irbid Governorate.

هدفت الدراسة الحالية التعرف إلى الاتجاهات نحو المدرسة والإدمان على مواقع التواصل الاجتماعي والعلاقة بينهما لدى طلبة المدارس الثانوية في محافظة إربد. وقد تكونت عينة الدراسة من (400) طالبٍ وطالبة من طلبة الصفين الحادي عشر والثاني عشر من الفرعين: العلمي والأدبي. وقد أشارت نتائج الدراسة إلى وجود فروق دالة إحصائيًا على أبعاد الاتجاهات نحو المعلمين، والاتجاهات نحو الموضوعات والأنشطة، والاتجاهات نحو البيئة المدرسية تعزى لمتغير الجنس، وكان متوسط درجات الإناث أعلى، كما أشارت النتائج إلى عدم وجود فروق دالة إحصائيًا لبُعد الاتجاهات نحو الزملاء تعزى لمتغير الجنس؛ وعدم وجود فروق لجميع أبعاد الاتجاهات نحو المدرسة تعزى لمتغير المستوى الصفي. كما تبين وجود فروق دالة إحصائيًا في متوسطات الدرجات على مقياس الإدمان على مواقع التواصل الاجتماعي تعزى لمتغير الجنس، وكان متوسط درجات الذكور أعلى، وعدم وجود فروق دالة تعزى لمتغيري المستوى الصفي والفرع الأكاديمي. وأشارت النتائج أيضا إلى أن الإدمان على مواقع التواصل الاجتماعي قد ارتبط سلبيا بالاتجاهات نحو المدرسة جميعها.The current study aimed to identify attitudes towards school and addiction to social networking sites and the relationship between them among secondary school students in Irbid governorate. The study sample consisted of (400) male and female students from the eleventh and twelfth grades of the two branches: scientific and literary. To achieve the objectives of the study, two measures were used: one for attitudes towards school, and the other for addiction to social networking sites. The results of the study indicated that there were statistically significant differences in the dimensions of attitudes towards teachers, attitudes towards subjects and activities, and attitudes towards the school environment due to the gender variable, and the average scores of females were higher. ; There are no differences in all dimensions of attitudes towards school due to the grade level variable. It was also found that there were statistically significant differences in the average scores on the addiction scale on social networking sites due to the gender variable, and the average scores of males were higher, and there were no significant differences due to the variables of grade level and academic stream