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Khalid, Muhammad Waqas,Kim, Young Il,Haq, Muhammad Aneeq,Lee, Dongju,Kim, Bum Sung,Lee, Bin Elsevier 2020 Ceramics international Vol.46 No.7
<P><B>Abstract</B></P> <P>Structural ceramics such as Al<SUB>2</SUB>O<SUB>3</SUB> and Al<SUB>2</SUB>O<SUB>3</SUB>–ZrO<SUB>2</SUB> composites are widely used in harsh environment applications. The conventional sintering process for fabrication of these ceramics is time-consuming method that requires large amount of energy. Microwave sintering is a novel way to resolve this problem. However, to date, very limited research has been carried out to study the effects of different ZrO<SUB>2</SUB> crystal structures on Al<SUB>2</SUB>O<SUB>3</SUB>–ZrO<SUB>2</SUB> composites, especially on the sintering kinetics, when fabricated by microwave sintering.</P> <P>The microwave hybrid sintering of Al<SUB>2</SUB>O<SUB>3</SUB> and Al<SUB>2</SUB>O<SUB>3</SUB>–ZrO<SUB>2</SUB> composites was performed in this study. Tetragonal zirconia and cubic zirconia were used as two different reinforcements for an α–alumina matrix, and the mechanical and thermal properties were studied. It was found that Al<SUB>2</SUB>O<SUB>3</SUB> experienced a remarkable increase in fracture toughness of up to 42% when t-ZrO<SUB>2</SUB> was added. Al<SUB>2</SUB>O<SUB>3</SUB>–c-ZrO<SUB>2</SUB> also showed increased fracture toughness. The sintering kinetics were also thoroughly investigated, and the average activation energy values for the intermediate stage of sintering were estimated to be 246 ± 11 kJ/mol for pure Al<SUB>2</SUB>O<SUB>3</SUB>, 319 ± 71 kJ/mol for Al<SUB>2</SUB>O<SUB>3</SUB>–c-ZrO<SUB>2</SUB>, and 342 ± 77 kJ/mol for Al<SUB>2</SUB>O<SUB>3</SUB>–t-ZrO<SUB>2</SUB>. These values indicated that the activation energy was increased by the addition of either type of ZrO<SUB>2</SUB>, with the highest value shown by Al<SUB>2</SUB>O<SUB>3</SUB>–t-ZrO<SUB>2</SUB>.</P>
Data Science and Machine Learning Approach to Improve E-Commerce Sales Performance on Social Web
Hussain Saleem,Khalid Bin Muhammad,Altaf H. Nizamani,Samina Saleem,M. Khawaja Shaiq Uddin,Syed Habib-ur-Rehman,Amin Lalani,Ali Muhammad Aslam International Journal of Computer ScienceNetwork S 2023 International journal of computer science and netw Vol.23 No.8
E-Commerce is a buzzword well known for electronic commerce activities including but not limited to the online shopping, digital payment transactions, and B2B online trading. In today's digital age, e-commerce has been playing a very important and vital role in areas such as retail shopping, sales automation, supply chain management, marketing and advertisement, and payment services. With a huge amount of data been collected from various e-commerce services available, there are multiple opportunities to use that data to analyze graphs and trends. Strategize profitable activities, and forecast future trade. This paper explains a contemporary approach for collecting key data metrics and implementing cost-effective automation that will support in improving conversion rates and sales performance of the e-commerce websites resulting in increased profitability.