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A Systematic Review Towards Big Data Analytics in Social Media

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Big Data Mining and Analytics 2022年第3期5卷 228-244页

作者： Md.Saifur rahman Hassan Reza School of Electrical Engineering and Computer Science University of North DakotaGrand ForksND 58202USA

The recent advancement in internet 2.0 creates a scope to connect people worldwide using society 2.0 and web 2.0 *** new era allows the consumer to directly connect with other individuals,business corporations,and the *** are open to sharing opinions,views,and ideas on any topic in different formats out *** creates the opportunity to make the"Big Social Data"handy by implementing machine learning approaches and social data *** study offers an overview of recent works in social media,data science,and machine learning to gain a wide perspective on social media big data *** explain why social media data are significant elements of the improved data-driven decision-making *** propose and build the"Sunflower Model of Big Data"to define big data and bring it up to date with technology by combining 5 V’s and 10 *** discover the top ten social data analytics to work in the domain of social media platforms.A comprehensive list of relevant statistical/machine learning methods to implement each of these big data analytics is discussed in this work."Text Analytics"is the most used analytics in social data analysis to *** create a taxonomy on social media analytics to meet the need and provide a clear ***,techniques,and supporting data type are also discussed in this research *** a result,researchers will have an easier time deciding which social data analytics would best suit their needs.

关键词： big data social media big data analytics social media analytics text analytics image analytics audio analytics video analytics predictive analytics descriptive analytics prescriptive analytics diagnostic analytics

Cascade controller based modeling of a four area thermal:gas AGC system with dependency of wind turbine generator and PEVs under restructured environment

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Protection and Control of Modern Power Systems 2022年第1期7卷 696-713页

作者： Debdeep Saha Lalit Chandra Saikia Asadur rahman Department of Electrical Engineering Indian Institute of Engineering Science and Technology ShibpurShibpurWest BengalIndia Department of Electrical Engineering National Institute of Technology SilcharSilcharAssamIndia Department of Electrical Engineering National Institute of Technology SrinagarSrinagarIndia

This paper investigates automatic generation control(AGC)of a realistic hybrid four-control area system with a dis-tinct arrangement of thermal units,gas units and additional power generation.A proportional-integral-double deriva-tive cascaded with proportional-integral(PIDD-PI)controller is employed as secondary controller in each control area for robust restructured AGC considering bilateral transactions and contract *** Harris Hawks algorithm is used to determine the optimal controller gains and system parameters under several *** vehicle(EV)aggregators are employed in each area to participate fully along with thermal and gas units to compensate for the unscheduled system demand in the local area.A comparison of non-cascaded controllers such as PI-PD,PD-PID and the proposed PIDD-PI proves the superiority of the *** effect of the decline in inertia is closely examined because of the sudden outage of a generating unit while at the same time considering the change in area frequency response characteristics and area control *** fleets make significant contributions to improving the system dynamics dur-ing system inertia *** use of EVs in the presence of a wind energy-supported grid can provide a stable efficacy to the power *** simulations with higher load demands,stochastic communication delays in presence of the WTG plant,and violations in system loadings and changes in gas turbine time constants in the absence of WTG demonstrate the robustness of the proposed control approach.

关键词： Automatic generation control Cascade controller Electric vehicle Harris Hawks algorithm Wind turbine generator

Anticancer Activities of Plant Secondary Metabolites:Rice Callus Suspension Culture as a New Paradigm

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Rice science 2021年第1期28卷 13-30页

作者： Wusirika Ramakrishna Anuradha Kumari Nafeesa rahman Pallavi Mandave Department of Biochemistry Central University of PunjabBathindaPunjab 151001India Department of Biological Sciences Michigan Technological University1400 Townsend Drive HoughtonMichigan 49931USA Interactive Research School for Health Affairs Bharati VidyapeethPuneMaharashtra 411043India

Plant natural products including alkaloids,polyphenols,terpenoids and flavonoids have been reported to exert anticancer activity by targeting various metabolic *** biological pathways regulated by plant products can serve as novel drug *** natural compounds or their derivatives used for cancer treatment and some novel plant-based compounds which are used in clinical trials were *** suspension culture with secondary metabolites can provide a continuous source of plant pharmaceuticals without time and space *** research has shown that rice callus suspension culture can kill>95%cancer cells with no significant effect on the growth of normal *** role of candidate genes and metabolites which are likely to be involved in the process and their potential to serve as anticancer and anti-inflammatory agents were *** scale production of plant callus suspension culture and its constituents can be achieved using elicitors which enhance specific secondary metabolites combined with bioprocess technology.

关键词： plant metabolite cancer metabolism rice callus suspension culture cytotoxicity anticancer agent

An Asset-Based Approach to Mitigate Zero-Day Ransomware Attacks

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Computers, Materials & Continua 2022年第11期73卷 3003-3020页

作者： Farag Azzedin Husam Suwad Md Mahfuzur rahman Information&Computer Science Department KFUPMDhahranKSA

This article presents an asset-based security system where security practitioners build their systems based on information they own and not solicited by observing attackers’*** security solutions rely on information coming from *** are current monitoring and detection security solutions such as intrusion prevention/detection systems and *** article envisions creating an imbalance between attackers and defenders in favor of *** such,we are proposing to flip the security game such that it will be led by defenders and not *** are proposing a security system that does not observe the behavior of the *** the contrary,we draw,plan,and follow up our own protection strategy regardless of the attack *** objective of our security system is to protect assets rather than protect against *** machine introspection is used to intercept,inspect,and analyze system *** system callbased approach is utilized to detect zero-day ransomware *** core idea is to take advantage of Xen and DRAKVUF for system call interception,and leverage system calls to detect illegal operations towards identified critical *** utilize our vision by proposing an asset-based approach to mitigate zero-day ransomware *** obtained results are promising and indicate that our prototype will achieve its goals.

关键词： Zero-day attacks ransomware system calls virtual machine introspection

High voltage power transformer condition assessment considering the health index value and its decreasing rate

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High Voltage 2021年第2期6卷 314-327页

作者： Winanda Riga Tamma rahman Azis Prasojo Suwarno School of Electrical Engineering and Informatics Institut Teknologi BandungBandungIndonesia Electrical Engineering Department Politeknik Negeri MalangMalangIndonesia

A health index method is a useful tool for the transformer assessment *** method has been used in several previous ***,most of them have not observed the health index decreasing rate as an aspect to improve the transformer con-dition assessment.A health index method with different approaches is proposed,considering the values and decreasing rate to assess the transformer *** data from in-service and out-of-service 150 kV power transformers provided by the Indonesian electric company are *** correlation between operating age and Health Index value and Health Index decreasing rate was also *** increasing operation age,the Health Index value tends to decrease with a correlation coefficient R2 of *** analysis was conducted to power transformers with historical data of 3 years or more,which showed that the tendency of the Health Index value decreasing rate is higher with older *** paper also illustrates the Health Index analysis of 35 out-of-service transformers,resulting in a more suitable Health Index value compared to the previous *** study proposes the transformer risk assessment based on its health index value and the decreasing rate.

关键词： value power service

The link between intracellular calcium signaling and exosomal PD-L1 in cancer progression and immunotherapy

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Genes & Diseases 2024年第1期11卷 321-334页

作者： Md Rakibul Alam Md Mizanur rahman Zhiguo Li Department of Toxicology and Cancer Biology College of MedicineUniversity of KentuckyLexingtonKY 40506USA Department of Medicine(Nephrology) Faculty of Medicine and DentistryUniversity of AlbertaEdmontonAlberta T6E2H7Canada

Exosomes are small membrane vesicles containing microRNA,RNA,DNA fragments,and proteins that are transferred from donor cells to recipient *** cells release exo-somes to reprogram the factors associated with the tumor microenvironment(TME)causing tu-mor metastasis and immune *** evidence revealed that cancer cell-derived exosomes carry immune inhibitory molecule program death ligand 1(PD-L1)that binds with re-ceptor program death protein 1(PD-1)and promote tumor progression by escaping immune ***,some FDA-approved monoclonal antibodies are clinicallyused for cancer treatment by blocking PD-1/PD-L1 *** notable treatment outcomes,some pa-tients show poor drug *** PD-L1 plays a vital role in lowering the treatment response,showing resistance to PD-1/PD-L1 blockage therapy through recapitulating the ef-fect of cell surface *** enhance therapeutic response,inhibition of exosomal PD-L1 is *** signaling is the central regulator of tumorigenesis and can regulate exosome biogenesis and secretion by modulating Rab GTPase family and membrane fusion ***-mune checkpoints are also connected with calcium signaling and calcium channel blockers like amlodipine,nifedipine,lercanidipine,diltiazem,and verapamil were also reported to suppress cellular PD-L1 ***,to enhance the PD-1/PD-L1 blockage therapy response,the reduction of exosomal PD-L1 secretion from cancer cells is in our therapeutic *** this review,we proposed a therapeutic strategy by targeting calcium signaling to inhibit the expression of PD-L1-containing exosome levels that could reduce the anti-PD-1/PD-L1 therapy resistance and increase the patient's drug response rate.

关键词： Calcium signaling CD8^(+)T cells Exosomal PD-L1 Exosomes biogenesis Immunosuppression Immunotherapy

Forest cover dynamics in Palas Valley Kohistan, Hindu Kush-Himalayan Mountains, Pakistan

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Journal of Mountain Science 2021年第2期18卷 416-426页

作者： Noor ul HAQ Fazlur rahman Iffat TABASSUM MEHRAN Department of Geography University of PeshawarPeshawar 25120Pakistan Department of Urban and Regional Planning University of PeshawarPeshawar 25120Pakistan

Forest cover change in the mountainous region is driven by a variety of anthropogenic and natural *** Hindu Kush-Himalayan Mountains has experienced a considerable vegetation cover change due to intensive human activities,such as population growth,proximate causes,accessibility,unstable political situations,government policy failure and *** present study seeks to find out the impact of population growth and road network expansion on forest cover of Palas valley based on remotely sensed data and employing geospatial *** in forest cover were determined by classifying time-series satellite images of Landsat and Sentinel 2 *** images of October 1980,2000,2010 and 2017 were classified into six land cover classes and then the impact of population growth and accessibility on forest cover was ***,forest cover and land-use change detection map was prepared using classified images of 1980 and *** data were collected mainly from field visits(ground verification),census reports,Communication and Works Department,*** imageries were obtained from the United States Geological Survey’s websites and classified in ERDAS imagine 2014 and ESRI ArcGIS 10.2.1 using supervised classification-maximum likelihood *** of this study revealed that a substantial reduction in forest cover has taken place mainly in the proximity of human *** the average,during the study period,annually more than 460 hectares of forest area has been converted into other uses.

关键词： Forest cover changes Population growth Road networks Deforestation Palas Valley Pakistan

Unconfined compressive strength of MICP and EICP treated sands subjected to cycles of wetting-drying,freezing-thawing and elevated temperature:Experimental and EPR modelling

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第5期15卷 1226-1247页

作者： Isaac Ahenkorah Mizanur rahman Rajibul Karim Simon Beecham WSP Golder WA6003Australia UniSA STEM University of South AustraliaMawson LakesSA5095Australia

Microbial-induced carbonate precipitation(MICP)and enzyme-induced carbonate precipitation(EICP)are two bio-cementation techniques,which are relatively new methods of ground *** both techniques share some similarities,they can exhibit different overall behaviours due to the differences in urease enzyme sources and treatment *** paper presented 40 unconfined compressive strength(UCS)tests of MICP and EICP treated sand specimens with similar average calcium carbonate(CaCO3)content subjected to cycles of wetting-drying(WD),freezing-thawing(FT)and elevated temperature(fire resistance test e FR and thermogravimetric analysis e TG).The average CaCO3 content after a certain number of WD or FT cycles(ACn)and their corresponding UCS(qn)reduced while the mass loss *** EICP treated sand specimens appeared to exhibit a lower resistance to WD and FT cycles than MICP treated specimens possibly due to the presence of unbonded or loosely bonded CaCO3 within the soil matrix,which was subsequently removed during the wetting(during WD)or thawing(during FT)*** test and TG analysis showed a significant loss of mass and reduction in CaCO3 content with increased temperatures,possibly due to the thermal decomposition of CaCO3.A complete deterioration of the MICP and EICP treated sand specimens was observed for temperatures above 600*** observed behaviours are complex and theoretical understanding is far behind to develop a constitutive model to predict ***,a multi-objective evolutionary genetic algorithm(GA)that deals with pseudo-polynomial structures,known as evolutionary polynomial regression(EPR),was used to seek three choices from millions of polynomial *** best EPR model produced an excellent prediction of qn with a minimum sum of squares error(SSE)of 2.392,mean squared error(MSE)of 0.075,root mean square error(RMSE)of 0.273 and a maximum coefficient of determination of 0.939.

关键词： Bio-cementation Enzyme-induced carbonate precipitation (EICP) Microbial-induced carbonate precipitation (MICP) Calcium carbonate Urease enzyme

Theoretical investigation of the pressure broadening D1 and D2 lines of cesium atoms colliding with ground-state helium atoms

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Chinese Physics B 2019年第10期28卷 300-308页

作者： Moussaoui Abdelaziz Alioua Kamel Allouche Abdul-rahman Bouledroua Moncef Universite Cherif Messaidia B.P.1553Souk-Ahras 41000Algerie Laboratoire de Physique de la Matiere et du Rayonnement LPMR Universite Cherif MessaidiaB.P.1553Souk-Ahras 41000Algerie Universite Lyon 1 CNRSLASIM UMR5579bat.A.Kastler43 Bd du 11 novembre 1918F-69622 VilleurbanneFrance Laboratoire de Physique des Rayonnements LPR Universite Badji MokhtarB.P.12Annaba 23000Algerie

Full quantum mechanical calculations are performed to determine the broadening in the far wings of the cesium D1 and D2 line shapes arising from elastic collisions of Cs atom with inert helium atoms. The potential energy curves of the low-lying CsHe molecular states, as well as the related transition dipole moments, are carefully computed from ab initio methods based on state-averaged complete active space self-consistent field-multireference configuration interaction(SACASSCF-MRCI) calculations, involving the spin-orbit effect, and taking into account the Davidson and BSSE *** absorption and emission reduced coefficients are determined in the temperature and wavelength ranges of 323-3000 K and 800-1000 nm, respectively. Both profiles of the absorption and the emission are dominated by the free-free transitions,and exhibit a satellite peak in the blue wing near the wavelength 825 nm, attributed to B^2Σ1/2^+→ X^2Σ1/2^+/transitions. The results are in good agreement with previous experimental and theoretical works.

关键词： absorption coefficient emission coefficient pressure broadening potential curves