Cadmium telluride (CdTe) solar cells have attracted a lot of interest in recent years, attributed to their low cost and eco-friendly fabrication technique. However, the back contact is still the key issue for further improvement in device performance due to the work function difference between p-CdTe and metal contacts. In this study, the interatomic characteristics of zinc telluride (ZnTe) and Cu-doped ZnTe (ZnTe:Cu) as a back surface field (BSF) in CdTe structure is investigated using first-principles density functional theory (DFT) to overcome the Schottky barrier in CdTe solar cells. The incorporation of different doping levels of copper (Cu) in ZnTe on an atomic scale, where Zn1−xTe:Cux (x = 0, 2, 4, 6, 8, and 10) as the potential back surface field layers is investigated. The effect of doping concentration on electrical characteristics such as bandgap structure and density of states (DOS) were examined via ab initio with the Hubbard U (DFT + U) correction. The results showed an.....

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Evidence is steadily mounting on the prominence of online and technology-enabled learning in higher education. The present study intended to investigate whether virtual, interactive, real-time, instructor-led (VIRI) online learning has the potential to yield comparable student performance and engagement results to that of a traditional face-to-face (F2F) course. This is of great significance since the study delves into the possibilities of synchronous online learning in environments where resources are scarce and provide valuable insights into how technology can contribute to improving medical education and accessibility to educational resources in Iran and other comparable educational contexts. The participants were 18–30-year-old male (n = 16) and female (n = 24) students of nursing (n = 20) and operating room (n = 20) who enrolled in synchronous online and face-to-face courses as the requisite for the fulfilment of a bachelor’s degree. T-tests and descriptive statistics were the.....

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Metal-free N–S- and N–P-doped nanocarbon (SCNP and PCNP) electrocatalysts prepared through sustainable microwave-assisted synthesis using hemigraphis alternata plant leaves. The prepared heteroatom-doped nanocarbon materials are active catalysts for the two-electron oxygen reduction reaction (ORR) to produce 65–70% of hydrogen peroxide. As evidenced from the XPS, most proportion of the doped heteroatoms contain the oxygen functional groups in the nanocarbons. These attributes are the critical factors to see the selective two-electron transfer ORR for the PCNP and SCNP. This approach shed light on the critical role of dual heteroatoms doping and the oxygen functionalities in nanocarbon towards the selectivity of ORR. We believe that this method would allow the preparation of heteroatom that contains oxygen functionalities. Our work paves a sustainable way of preparation of nanocarbon based ORR catalysts that are only selective for two-electron transfer process. Graphical abstract:.....

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This research was conducted on the basis of the low level of basic movement skills of children aged 9-10 years. It is thought that many factors influence other game approaches, conventional and physical fitness. This research aims to determine the effect of play, conventional and physical fitness approaches on the basic movements of children aged 9-10 years. This type of research is a quasi-experiment with a sample size of 40 people divided into two groups using ordinally meat pairing, 20 experimental people and 20 control people. Basic movement skills are obtained with the TGMD-2 test which consists of locomotor movements and object control. Data were analyzed using the t-test technique. The results of research and data analysis show that children who use a play approach are better than conventional children, as seen from their basic movement skills and physical fitness, sig 0.000..

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Tellurium, zinc, and erbium oxides glasses are made using the melt-quenching technique. The XRD results show that the glass samples are naturally amorphous. The TeO4 units' extended vibration are performed using FTIR. On the other hand, the TeO3 as well as Er2O3 are detected using deconvolution. When the concentration of erbium ions increases, the density and molar volume will also increase. The high value of thermal diffusivity at 0.02 and 0.03 M fractions, a large value of glass stability (greater than 100 °C), and strong thermal stability are excellent for fibre drawing. As a result, the highest linear attenuation coefficient (LAC) values are found for the sample with 5 mol% Er2O3 content, where the values drop suddenly from 0.95744 to 0.21065 cm−1 over the tested energy which ranges between 0.284 and 2.51 MeV. Among the TZEr samples, TZEr5 has the lowest half-value layer (HVL) values ranging from 0.00243 to 0.08252 cm. Thus, both LAC and HVL are considered as suitable options fo.....

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Given the limited empirical evidence on conceptualizing authenticity in food, this study explored the dimensionality of perceived authenticity in food within a state fair setting. By using a rigorous scale development procedure through a mixed method, this study developed and validated a set of scales to measure authenticity in food and confirmed four underlying factors of food authenticity: unique, original, local, and traditional. The findings provide a foundation for scale development along with theoretical insights on authentic food with the four dimensions identified. Practically, this study provides managerial guidelines for state fair organizers to better evaluate food authenticity concerning the four dimensions, plan strategic marketing tools that could attract more consumers, and improve their offerings to visitors’ authentic experiences. © 2022 Taylor & Francis Group, LLC...

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In line with the objectives of Industry 4.0, the Health 4.0 initiative promotes the integration of cutting-edge technology into medical practice. The Health 4.0 concept includes virtual reality (VR) as a component that has the potential to play an important role. Even though VR in the medical field is a hot issue right now, there is still a lack of understanding about VR-assisted treatment from a broad viewpoint. The combination of healthcare with the metaverse will result in more efficient resource distribution and usage within the healthcare system. The data pertaining to healthcare in the metaverse are kept on a public server, and Artificial Intelligence (AI)-based devices are used to retrieve it. Through the use of metaverse's healthcare systems, patients get a diagnosis in a timely manner. Because the metaverse is meant to be used for specific things, its effects on society, the economy, and culture are also determined by those things. The main findings of this review are to highl.....

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Moon phases are the part of the moon shape that is directly illuminated by the sun as seen from the earth. The moon phases change gradually in about 27 days as the positions of the moon's orbit around the earth and the earth's orbit around the sun shift. The part of the moon that can be seen is from the reflection of sunlight and it depends on the position of the moon in its orbit. However, most students do not clearly understand the concept of moon phases and were unable to explain the factors that influence the occurrence of moon phases, identify changes in the shape of moon phases, sketch the order according to the sequence of moon phases and name the moon phases. As a result, the purpose of this research is to create an android application for the moon phases topic, which also serves as a medium of teaching aids for teachers and students. The foundational knowledge elements through the 3x3 Model of 21st Century Learning have been embedded through this android application. The metho.....

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Advanced technologies such as the Internet of Things provide an integrated platform for weather focusing, including rainfall and flood prediction. Large rainfall data frequently contain noise, which can be difficult to analyze using a standard time series model due to violated assumptions. Singular spectrum analysis (SSA) is a model-free time series analysis method that is widely used. This study aims to predict the rainfall trends in the Special Region of Yogyakarta, Indonesia, using the Recurrent SSA (SSA-R) and Vector SSA (SSA-V). The SSA-R forecasts using the recurrent continuation directly with the linear recurrent formula, while the SSA-V is a modified recurrent method. This study used 50 years of monthly rainfall data (1970-2019) from 25 stations in the special region of Yogyakarta, Indonesia. The SSA steps for forecasting rainfall data include decomposition (embedding and singular value decomposition), reconstruction (grouping and diagonal averaging), and evaluating the SSA mod.....

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Most global problems are being solved by using sustainable energy harvesting technologies to retain the social ecosystem in great condition. The triboelectric nanogenerator (TENG) which is a renewable energy harvesting device, collects the waste mechanical energy from its surroundings and performs the electric signal conversion. TENG have garnered increased attention in recent years by offering prospective use in energy harvesting technology. Particularly, there is a need for flexible energy conversion that serves as a power supply for portable electronic equipment. In this study, ZnO nanosheet thin film prepared on the flexible conductive aluminium foil through a low temperature immersion technique was used to generate electrical energy. The effect of heat treatment on ZnO nanosheet thin film was also investigated on the surface morphology, structural properties and nanogerator performance. The high density of interconnected ZnO nanosheet were observed before and after heat treatment .....

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