Paradigm shift in teaching-learning from classroom to virtual mode – Challenges and opportunities

Since the unprecedented declaration of lockdown there has been a paradigm shift in medical education from chalk and board to virtual mode imposing both challenges and opportunities to faculty and students alike. As guest lecture is an innovative way of pedagogy we addressed them through an online talk to analyse the preferences towards sudden change in medical education. Students and faculty were addressed about the paradigm shift in teaching learning methods through an online guest lecture and the attendees answered a feedback questionnaire on different Teaching Learning methods. Based on responses to the questions results were plotted in Microsoft Excel and completed questionnaires were analyzed for statistics. : 90% of students and 100% of faculty found online guest lecture interesting and opined positively about having more online lectures in academic year. As far as teaching learning method is concerned both faculty and as students preferred offline/ traditional/ classroom teaching. : Online guest lecture offers more opportunities than challenges for both faculty and students. Arranging online guest lectures is economical, cost effective, has ease of attending from place of convenience provided robust internet connection is ensured, eliminates travel time as well as reduces the programme budget. Hence more number of virtual guest lectures can be arranged in an academic year for benefit of medical undergraduates. It is a novel platform for student teacher interaction and arrangement of more and more online guest lectures from eminent speakers excelling in various superspecialities should be encouraged.

Vibration Analysis of Cylindrical with Splitter Plates under Different Deflection Angles at High Reynolds Number

In order to study the influence of the splitter plate in the elastic support system, the SST k-omega turbulence model is used to solve the problem, and the cylindrical system with splitter plate is numerically simulated by overset mesh. This paper studies the effect of the splitter plate on the vibration system at different deflection angles. The results show that the splitter plate has little effect on the system when the deflection angle is low. When the deflection angle is about 10 degrees, the system vibration characteristics will have a sudden change, the amplitude will decrease, and the vortex frequency will increase. Between the deflection angle of 10 degrees and 45 degrees, as the deflection angle increases, the amplitude increases and the vortex frequency decreases. It can be seen from the motion trajectory that the deflection angle changes suddenly after 10 degrees, and the system has a very small amplitude between 10 degrees and 25 degrees. In this declination interval, the splitter plate controls the vibration of the cylindrical system better.

“Wegoquiz” to Improve Students’ English Achievement

Pandemic began to enter this country around March 2020. Since then, almost all teachers, students and schools were shocked by the very sudden change. Online learning becomes one of the solution in learning.However, many students could not follow this online learning well. Therefore, the teachers have to be very careful in choosing and planning online learning media for teaching otherwise the result would be dissatisfying. This paper reports a best practice on the use of “wegoquiz”media in improving the students’ English achievement at SMAN 1 Batang Anai. It is a combination of three media in online learning. The three media are learning website with google site, google meet and quizziz. These media were used to the third year students in the first semester of 2021/2022 academic year. The result shows that by using “wegoquiz”,the students’engagement in learning process is improving a lot. They learned using the website, they attended google meet and they did the quizziz several times. As a result, their English achievement is also improving significantly.

Potential for Further Evolution of CRDs

Although Grondona prepared detailed guidelines that his system should be implemented in relation to durable, essential, basic imported commodities, he also understood that, once established successfully, CRDs' operations could evolve in various ways in order to achieve greater benefits. For example, the inclusion of precious metals such as gold and silver, albeit on a somewhat different basis than industrial commodities, is an interesting possibility. Grondona also recommended that other products such as basic manufactured components like standardised steel or aluminium strip could be included. Another potential evolution is a CRD's role in a currency crisis: a sudden change in the exchange rate would be countered to some extent by a CRD being asked to sell or buy commodities, which would tend to resist the initial change. A CRD's terms of operation might be adjusted in order to strengthen its influence as such a countermeasure.

Experimental Study on Source Failure Mechanism and Acoustic Emission Characteristics of Red Sandstone Under Uniaxial Compression

In order to study the rock fracture mechanism and precursor characteristics, uniaxial compression experiments of red sandstone were carried out. Using acoustic emission technology and digital speckle correlation method as experimental observation means, the evolution characteristics of deformation field and acoustic emission index during rock deformation were studied. The results show that : (1) The deformation concentration of rock deformation localization zone is the main cause of nonlinear evolution of rock stress-strain curve. (2) The volume parameters of different types of cracks in rock acoustic emission change with the relative displacement rate and dislocation rate of deformation localization zone. (3) In terms of failure types, there are more high-frequency components of tensile fracture main frequency, more low-frequency components of shear fracture main frequency, and wider distribution of mixed fracture main frequency. In the time sequence, the spectrum distribution of acoustic emission signals is wide and the amplitude is small at the sudden change time. At the sudden change time, the spectrum distribution of acoustic emission signals becomes narrow, the amplitude increases, and the spectrum distribution of peak points is greatly narrowed. Therefore, it is considered that the spectrum distribution is greatly narrowed can be used as an early warning precursor.

Evolutionary footprints of a cold relic in a rapidly warming world

With accelerating global warming, understanding the evolutionary dynamics of plant adaptation to environmental change is increasingly urgent. Here we reveal the enigmatic history of the genus Cochlearia (Brassicaceae), a Pleistocene relic that originated from a drought-adapted Mediterranean sister genus during the Miocene. Cochlearia rapidly diversified and adapted to circum-Arctic regions and other cold-characterized habitat types during the Pleistocene. This sudden change in ecological preferences was accompanied by a highly complex, reticulate polyploid evolution, which was apparently triggered by the impact of repeated Pleistocene glaciation cycles. Our results illustrate that two early diversified arctic-alpine diploid gene pools contributed differently to the evolution of this young polyploid genus now captured in a cold-adapted niche. Metabolomics revealed central carbon metabolism responses to cold in diverse species and ecotypes, likely due to continuous connections to cold habitats that may have facilitated widespread adaptation to alpine and subalpine habitats, and which we speculate were coopted from existing drought adaptations. Given the growing scientific interest in adaptive evolution of temperature-related traits, our results provide much-needed taxonomic and phylogenomic resolution of a model system as well as first insights into the origins of its adaptation to cold.

PENDAMPINGAN MASSIVE OPEN ONLINE COURSE (MOOC) DAN MEETING ONLINE PLATFORMS DALAM UPAYA MENINGKATKAN KOMPETENSI GURU MERDEKA BELAJAR DI SMA NEGERI SUBOH

This community service activity (PKM) was carried out to assist in the situation experienced by Suboh State High School/SMK teachers against the sudden change in learning modes due to the Covid-19 pandemic. This activity, carried out in online training, explains how to design engaging online learning using MOOCs (Massive Online Open Courses) and Meeting Online Platforms technology. The online seminar is held using the Zoom platform within 180 minutes. The presentation of material on designing engaging online learning with Massive Open Online Courses (MOOCs) and Meeting Online Platforms is divided into three main parts, namely 1) introduction to Meeting Online Platforms for online learning, 2) introduction to Massive Open Online Courses (MOOCs) for learning online, and 3) Massive Open Online Courses (MOOCs) and Meeting Online Platforms. In general, this PKM activity provides an introduction and understanding of online learning design with technology that teachers of SMA/SMK Negeri Suboh can use to improve information technology skills

Flv3A facilitates O2 photoreduction and affects H2 photoproduction independently of Flv1A in diazotrophic Anabaena filaments

The model heterocyst-forming filamentous cyanobacterium, Anabaena sp. PCC 7120 (Anabaena) represents multicellular organisms capable of simultaneously performing oxygenic photosynthesis in vegetative cells and the O2-sensitive N2-fixation inside the heterocysts. The flavodiiron proteins (FDPs) have been shown to participate in photoprotection of photosynthesis by driving excess electrons to O2 (Mehler-like reaction). Here, we addressed the physiological relevance of the vegetative cell-specific Flv1A and Flv3A on the bioenergetic processes occurring in the diazotrophic Anabaena under variable CO2. We demonstrate that both Flv1A and Flv3A are required for proper induction of the Mehler-like reaction upon a sudden change in light intensity, which is likely important for the activation of carbon-concentrating mechanisms (CCM) and CO2 fixation. Nevertheless, Flv3A showed a more important role in photoprotection than Flv1A. Under low CO2 diazotrophic conditions, Flv3A is capable of mediating moderate O2 photoreduction, independently of Flv1A, but in coordination with Flv2 and Flv4. Strikingly, the lack of Flv3A resulted in strong downregulation of the heterocyst-specific uptake hydrogenase, which led to enhanced H2 photoproduction under both oxic and micro-oxic conditions. These results reveal a novel regulatory network between the Mehler-like reaction and the H2 metabolism, which is of great interest for future photobiological production of H2 in Anabaena.