احمد مصطفى ابوكنه, سلافة آدم عبد الرحيم محمد

كلية الدراسات العليا-جامعة السودان للعلوم والتكنولوجيا · السودان

Breast fibroadenomas are common benign breast tumors and detailed descriptions of their sonographic appearances are necessary for differential diagnosis from other benign lesions or breast cancers.The main objective of this study was to evaluate the sonographic criteria of breast fibroadenoma. The data was collected from Khartoum breast center. A total of 50 women their ages between 17-36 years with palpable breast lump diagnosed by histopathology as fibroadenoma were scanned by ultrasound machine (GE healthcare Logiq 5) with high frequency transducer 7.5 MHz from April 2016 to August 2016.The result of this study revealed that the mean age affected by fibroadenoma was in the age group (22-26 years). The dominant sonographic features of fibroadenoma were; hypoechoic, well defined homogenous mass with posterior enhancement and width to height ratio ≥1.4. there were no significant difference between all type of fibroadenoma.Ultrasonography is the modality of choice for the evaluation of a simple breast fibroadenoma with the typical sonographic features and could eliminate the need for further invasive procedures including biopsy.

ربيعة مجكدود, رحيمة مويسات

كلية العلوم الانسانية والاجتماعية-جامعة محمد بوضياف - المسيلة · الجزائر

يعتبر زمن نيتشه زمنا مريضا ينخر جسد حضارته وحاول أن يعريها من أقنعتها الزائفة ليكشف عن الفساد والانحلال و العدمية التي تغلغلت فيه، هذا العصر العدمي الذي خيم عليه ليل الميتافيزيقا وغربت عنه شمس القيم الحقيقية التي تدعوا إلى الحياة والسعادة والصيرورة وهذا ما دفع بنيتشه إلى بناء مشروع فلسفي قصد قطع درب الميتافيزيقا: وذلك للقضاء على القيم التقليدية السائدة، لهذا يمثل نيتشه منعطفا في تاريخ الفلسفة الحديثة من خلال منهجه الجينيالوجي الذي اعتمده للبحث عن أصل ومسار القيم الأخلاقية من خلال التسليم بمبدأ إرادة القوة، التي عمل نيتشه من خلالها القضاء على الميتافيزيقا وكل ما هو معادي للوجود، بهذا تمثل فلسفة قلب القيم مؤشر ايجابي لتحرير الإنسان من قبضة العدمية والميتافيزيقا ودعوة صريحة لقيام وبناء أخلاق نبيلة، الإنسان صانعها وإرادة القوة أساسها.

Ahmed Khedr, Ali El-Moursy, Marya Jehad

كلية الحوسبة والمعلوماتية-جامعة الشارقة · الامارات

With the exponential growth of the Internet of Things (IoT), computationally intensiveand delay-sensitive applications are rapidly growing. The data generated by these appli-cations such as real-time image processing, augmented reality, video games, and location-based applications need significant computation power. However, IoT devices are lim-ited in terms of battery life, processing power, and storage capacity. Cloud computing issuggested to be utilized in offloading computation-heavy tasks from IoT devices to cloudservers. Although task offloading from IoT devices to the cloud may overcome the limita-tions of IoT devices, Cloud computing might result in high latency which directly affectsthe deliverable and performance of the IoT applications. Fog computing has been devel-oped to address this issue by placing storage and processing components at the edge ofthe network closer to IoT devices. Fog computing can deliver computing resources to IoTdevices with lower latency compared to cloud computing. However, the optimal fog noderesource allocation while minimizing the delay is challenging and must be done efficiently.Therefore, task offloading to fog nodes encountered the challenge of minimizing thee delayfor IoT applications.In some IoT areas such as the Internet of Vehicles (IoV), the challenge becomes moreserious. IoV is one of the most important implementations of the IoT which attempts toensure the safety of the vehicle and its environment in addition to achieving automaticdriving. Applications in the IoV are delay-sensitive and have more strict QoS than thosein other IoT applications. Furthermore, it is more challenging to apply the fog computingarchitecture to IoV networks due to the high mobility of vehicles. On the other hand,the coverage of fog nodes in fog computing is limited geographically and vehicles mightenter areas with poor fog computing coverage. Hence, areas with poor fog computingcoverage can be handled by vehicle-to-vehicle (V2V) task offloading which is challengingto optimize as well. In this thesis, we address task offloading in two different scenarios. The first scenariois the task offloading model for the IoT. This model is designed as a multi-objective opti-mization problem to find the best offloading decision. The objective is to reduce responsetime and total task offloading cost, which include latency cost processing cost, and mem-ory cost. An IoT-Fog architecture has been used to offload the task in this model. Weprovide extensive experiments and comparisons with the standard SSA, ACO, PSO, ABC,and RR algorithms to show the efficacy of the model. The second task offloading sce-nario is a multi-hop task offloading model for the IoV in areas with poor fog computingcoverage. A candidate vehicles selection mechanism is used in this model to select the can-didate vehicles from the neighboring vehicles and ensure that the vehicle can successfullytransmit the tasks to the candidate vehicle for processing. We provide extensive experi-ments and comparisons with the standard SSA, BAT, greedy, GPUPSO, TLBO, ACO, GA,and RO algorithms to show the efficacy of the model. We proposed a Multi-ObjectiveTask Offloading model based on Modified SSA (MOTO-MSSA) for IoT and a Multi-HopTask Offloading based on Modified SSA (MHTO-MSSA) for IoV to address those twochallenges using the modified SSA (MSSA). The results reveal that MOTO-MSSA boostsconvergence speed and exceeds existing techniques in terms of cost and response time withminimum overhead. The results demonstrate that MHTO-MSSA achieves faster conver-gence and outperforms BAT and SSA by approximately 2 times and 3 times, respectively.Moreover, MHTO-MSSA effectively reduces latency across different task sizes. For a 500KB task compared to basic SSA, BAT, and greedy algorithms, respectively

سفيان بوزيد , محمد بن دوبة

كلية العلوم الاقتصادية والتجارية وعلوم التسيير-جامعة عبد الحميد بن باديس مستغانم · الجزائر

عبد الأمير داخل زيدان

الجامعة التكنولوجية · العراق

عبد الرحيم عماد عبد الرحيم حمدان, مروان حداد, منقذ اشتية

كلية الدراسات العليا-جامعة النجاح الوطنية · فلسطين

The circadian clock is an endogenous self-sustaining mechanism which regulates a wide variety of rhythmic molecular and physiological processes during the 24-h period and thus allows plants to adapt to different daily and seasonal changes in their environment. However, there is little information about how the circadian clock has an impact on crop performance. In barley plants (Hordeum vulgare), the core oscillator mechanism which generates circadian rhythms consists of several components: CIRCADIAN CLOCK ASSOCIATED1 (CCA1) is a morning-expressed transcription factor, while TIMING OF CAB EXPRESSION 1 (TOC1) is considered an evening-expressed transcription factor. As elements of the core oscillator, regulation of these genes is an important part of the circadian clock, and uncovering those regulatory mechanisms can shed light on how the clock works and how it incorporates environmental feedback. The main objectives of this study are to identify natural variation in the circadian clock in a collection of barley accessions using high-throughput measurements of chlorophyll fluorescence (F) and to determine the variation of circadian parameters in response to environmental variation. Chlorophyll fluorescence (F) measurements have been used as a tool for studying circadian rhythms in a collection of 84 different barley accessions, and by using this technique, the correlation between parameters of the circadian rhythms and geographical differences, for example, elevation at the site of origin of the accessions, have also been analyzed. Results obtained from this study indicated that there are circadian oscillations of ~24 hours of F parameters, and these oscillations varied between different barley accessions as a consequence of CCA1, which varied in the regulation of rhythmic oscillations of F parameters. Also, plants showed a strong correlation between parameters of the circadian rhythms of fluorescence and geographical differences at the sites of origin of the barley plants.

Djalal Rezki, Nadjet Ramtani, Yasmine Madi

كلية العلوم الاقتصادية والتجارية والإدارة-جامعة عبد الرحمان ميرة - بجاية · الجزائر

Le contrôle de gestion a pour ambition d'optimiser les performances de l'entreprise en élaborant des outils adaptés, tels que la gestion budgétaire. Celle-ci repose sur trois piliers essentiels : la prévision, la budgétisation et le contrôle budgétaire. Cet outil a pour objectif de permettre à l'entreprise d'atteindre ses objectifs en analysant les écarts entre les réalisations effectives et les prévisions.L'objectif de cette étude est de mettre en évidence l'importance de la fonction de contrôle de gestion et l'application de la méthode de gestion budgétaire au sein de la SPA Cevital. Pour atteindre cet objectif, nous avons mené une étude approfondie sur le contrôle budgétaire des ventes, focalisée sur le calcul et l'analyse des écarts budgétaire.Dans ce cadre, l'étude pratique menée au sein de Cevital nous a permis d'évaluer l'efficacité de la gestion budgétaire à travers d'analyse des écarts budgétaires. Cette étude, couvrant les années 2022 et 2023, a révélé des domaines nécessitant des ajustements, notamment dans la prévision des ventes et la gestion des coûts. Les résultats ont montré que des écarts budgétaires défavorables étaient souvent liés à des fluctuations du marché, effectuant la performance financière globale de l'entreprise.En conclusion, la gestion budgétaire joue un rôle capital dans l'amélioration des performances de l'entreprise, en permettant une évaluation continue et en facilitant la prise des décisions stratégiques pour atteindre les objectifs fixés.

بن عودة يوسف, عثمان بقنيش

كلية الحقوق والعلوم السياسية-جامعة عبد الحميد بن باديس مستغانم · الجزائر

قرقوة إدريس , كريمة محاوي

كلية الآداب والعلوم الإنسانية-جامعة جيلالي ليابس – سيدي بلعباس · الجزائر

Abdullah Sultan, مصطفى الاو انماشان

كلية الهندسة-جامعة الملك فهد للبترول والمعادن · السعودية

Viscoelastic surfactants (VES) have wide range of applications in the oil and gas industry ‎including removing near well-bore damage. However, tolerance toward high ‎concentration of di- and tri-valent ions and stability at high temperature are still ‎challenging. ‎Product profiling was carried out based on unheralded sustainable rheology studies at ‎upscale thermal measurements for subsequent selective test with counterions (Mn+Cln, ‎M=Na, Ca, Mg, Fe), COOH-functionalized carbon nanotubes (CNT) and quaternary ‎amine-modified montmorillonite (MMT)-based organonanoclays in multi-component ‎brine medium, hitherto undisclosed.‎Incremental changes were observed in the viscoelastic properties of zero-shear viscosity ‎‎(ηo) and elastic modulus (G’) by miniature additions of nanoparticles for all the ‎counterions at elevated temperature of 95oC.‎Thermal resilience of composite VES samples within the context of in-situ temperature ‎was studied by conventional thermogravimetric analysis (TGA).Free and bound solvent ‎‎(mainly water) losses are indicative of declining rheological performance. The CNT-‎included samples showed the highest thermal endurance with regards to both solvent ‎losses at 220oC for the divalent ions which makes them most suitable for high-‎temperature formation applications. The (un)modified VES fractions were investigated by ‎proton NMR spectroscopy. A marked chemical-shift band evolved from the NMR data ‎distinguishing the compositions at different temperatures. The low-temperature samples ‎showed strong alkylic character while the high-temperature equivalents depicted ‎susceptible unsaturated bonds responsible for their otherwise improved rheological and ‎thermal performance earlier observed. Routine integration of the proton NMR confirmed ‎relative hydrogen abundance of the COOH-functionalized Carbon Nanotubes (CNT) ‎samples over the quarternary amine-modified Nano Clays (NC) and pristine compositions. ‎In the main acid stage of the single coreflooding experiment, the gelled acid and the ‎gelled acid/NC mix indicated wormholes that travelled halfway and a high pressure ‎response which underlines their good diversion potentials at 65oC as against the regular ‎acid and gelled acid/CNT mix which showed breakthrough response as confirmed by the ‎picturesque CT scan implying they are less effective for diversion at this temperature. ‎