Miracle-dz/UniFAR-FTUs huggingface dataset:
Expansion of E-Learning Market in India Due to Global Pandemic

Purpose: The purpose of the study was to examine the factors that are responsible for the expansion of e-learning market in India due to global pandemic. For this study, four factors, namely, Perceived Usefulness, Perceived Ease of Use, Habit and Trust were used to determine the behavioral intention of the students using e-learning platforms.Methodology/Approach: An online survey was conducted to collect data from 180 students using e-learning platforms in India after global pandemic. IBM SPSS was used in order to test the conceptual model and to validate and statistically analyze the results.Findings: The factor Perceived Usefulness was found to be significant on Behavioral Intention, whereas Perceived Ease of Use, Habit and Trust were found to be not significant.Implications: Educational technology organizations and various other e-learning platforms can use the results from the research study in order to improvise their existing strategy and to attract a greater number of schools or college institutions to adopt e-learning as a part of their curriculum in India.
Flow past two tandem circular cylinders of unequal diameter

Summary The present work investigates the structure associated with flow past two tandem circular cylinders with a diameter ratio of 0·33. The smaller cylinder is always upstream. The two parameters varied in the present work are the spacing between the cylinders denoted by l/d 2where l is the centre to centre spacing and d2 is the diameter of the downstream cylinder, and the Reynolds number Re based on d 2 Just like the case of flow past two equal size cylinders, a critical spacing was found to exist. For spacing less than the critical value, shear layers that separate from the upstream cylinder reattach onto the downstream cylinder (reattached flow regime) whereas for spacing larger than the critical value both cylinders shed vortices (co-shedding flow regime). For diameter ratio d l/d2 of 0·33 and at Re ≈ 6·27 × 104, the critical spacing is at l/d2 ≈ 1·8 to 2·2. In 1·8 ≤ l/d 2 ≤ 2·2, bi-stable flow situation where the flow structure changes intermittently between the reattached and the co-shedding types was observed and the probability that the flow is co-shedding within the bi-stable regime is found to follow a normal distribution.It was also found that the reattached flow regime can be sub-divided into two sub-regimes. In 0·66 ≤ l/d 2 ≤ 1·2 (sub-regime 1), the vortex formation length, l f, of vortices shed by the downstream cylinder appears to be shorter, resulting in larger drag force on the downstream cylinder and larger r.m.s. pressure around it. In 1·4 ≤ l/d 2 ≤ 1·18 (subregime 2), l f appears to be larger which results in a smaller drag force and smaller r.m.s. pressure distribution when compared with sub-regime 1. Only the downstream cylinder has a Strouhal number S2 associated with it in the reattached flow regime. The general trend is that of a slight reduction in S2 with increasing l/d 2 which is consistent with the relation of larger l f at larger l/d 2 in the reattached flow regime. In the coshedding regime, the Strouhal numbers of both cylinders are similar. The Reynolds number was varied in the range 3·15 × 104 ≤ Re ≤ 8·81 × 104. It was observed that both the mean drag and the r.m.s. lift and drag forces reduce in magnitude when Re was increased. From the spectra of the lift force, reduction in C'L was found to be due to a reduction in the regularity of the vortex shedding process. From the pressure distribution of the downstream cylinder at constant l/d 2, it was found that the reduction in mean drag with increasing Re is caused by an increase in base pressure which in turn is likely to be the consequence of an increase in vortex formation length. The upper and lower limits of the range in the lldi at which bistable flow was detected were found to decrease with increasing Re. At l/d 2 = 2·0, the flow was of the reattached type at Re = 3·15 × 104 and 4·75 × 104 but became bi-stable at Re ≥ 6·27 × 104.
Platelet Parameters and Their Relationships With the Thickness of the Retinal Nerve Fiber Layer and Ganglion Cell Complex in Primary Open-Angle Glaucoma

Objective Glaucoma is a neurodegenerative disease of the visual system. Platelet parameters are correlated with visual field mean deviation (MD) in glaucoma, but there is a lack of relative data on their relationship with structural changes in the retina. This study aimed to explore the relationship between platelet parameters and retinal nerve fiber layer (RNEL), ganglion cell complex (GCC) thickness, and cup/disk area ratio, evaluated by optical coherence tomography (OCT) in primary open-angle glaucoma (POAG). Methods A total of 118 consecutive patients with POAG and 120 age- and sex-matched control subjects were included in this retrospective study. Demographic data, platelet parameters in blood tests, visual field, and OCT results were evaluated. The RNFL was divided into the temporal, superior, nasal, and inferior quadrants. Based on the visual field MD, the patients were stratified into mild (MD ≤ 6.0 dB), moderate (6 dB < MD ≤ 12 dB), and severe (MD > 12.0 dB) subgroups. Results Patients with POAG had significantly lower platelet (PLT) levels and significantly higher platelet distribution width (PDW) and mean platelet volume (MPV) levels than controls. As the visual field MD increased, structural evaluation by OCT identified loss of disk rim area, average GCC thickness, and average RNFL thickness (all P < 0.001), as well as increased PDW (P < 0.001) and MPV (P = 0.004) levels in patients with POAG. The Spearman's rank correlation analysis showed that PDW levels were significantly correlated with OCT parameters such as RNFL thickness (r = −0.370, P < 0.001), GCC thickness (r = −0.294, P = 0.001), and cup/disk area ratio (r = 0.322, P < 0.001), as well as visual field MD (r = 0.607, P < 0.001) and mean sensitivity (MS) (r = −0.570, P < 0.001). Significantly correlations were also found between MPV and RNFL thickness (r = −0.321, P < 0.001), GCC thickness (r = −0.194, P = 0.041), and cup/disk area ratio (r = 0.237, P = 0.010). All the quadrants showed similar negative correlations between PDW, MPV, and RNFL thickness. The multiple linear regression analyses showed significant association between PDW and RNFL thickness (β = −0.331, P < 0.001), PDW and GCC thickness (β = −0.288, P = 0.002), MPV and RNFL thickness (β = −0.313, P = 0.001), and MPV and GCC thickness (β = −0.188, P = 0.048). Conclusion This study found significantly negative association between PDW, MPV levels and RNFL, GCC thickness, as well as positive association between PDW, MPV levels, and cup/disk area ratio in patients with POAG, suggesting that platelet activation may contribute to glaucomatous optic neuropathy.
Ryanair pilots: Unlikely pioneers of transnational collective action

In aviation, EU single market rules empowered Ryanair over three decades to defeat all pilot unions across Europe, regardless of the notionally strong power resources on which they were relying in their countries. Nonetheless, in December 2017, a transnational group of union-related pilots, the European Employee Representative Committee was critical in forcing Ryanair to finally recognize trade unions. This study shows that multinationals’ ability to circumvent national union power resources does not necessarily undermine transnational collective action. Hence, transnational union strength does not primarily depend on an aggregation of national power resources, but on union activists’ ability to exploit union-friendly peculiarities that the EU governance regime is also providing. We show that the apparently weaker institutional power resources at EU level provides more effective leverage for transnational collective action than apparently stronger power resources embedded within French, Danish, or Norwegian labour law. This requires an understanding of scale.
Student attitudes toward research in an undergraduate social science research methods course

ABSTRACT This study used a mixed-methods longitudinal design to investigate change in students’ understanding, attitudes, anxiety, perceptions of relevance, and disinterest in a required social science undergraduate research methods course across a semester. Participants were 78 undergraduates (94% women, 6% men; 92% white non-Hispanic/Latinx, M age = 25.62, SD = 7.17) at a university in the United States. Results suggest that participant attitudes toward and perceptions of research methods shifted over the course of the semester. Overall, anxiety decreased, while positive attitudes increased. However, initial perceptions and changes in perceptions varied among the three course sections. Over time, students largely recognized the course’s relevance and conveyed positive attitudes toward research and their success in overcoming the challenge of completing the course. Implications for pedagogy include the need for continued assessment of learners, development of students’ self-concept as researchers, teaching of research as a process, and connection to application.
Fuzzy Neural Network Control of Inverted-Pendulum System

This paper analyze the forces of single inverted pendulum system in detail. Through constituting the fuzzy rules and constructing the fuzzy neural networks (FNN) structure, this paper use BP arithmetic to train the system and use this system to control the inverted pendulum. The result of the simulation indicates that FNN can be used in many fields.
Melatonin Modulation of Radiation-Induced Molecular Changes in MCF-7 Human Breast Cancer Cells

Radiation therapy is an important component of cancer treatment scheduled for cancer patients, although it can cause numerous deleterious effects. The use of adjuvant molecules aims to limit the damage in normal surrounding tissues and enhance the effects of radiation therapy, either killing tumor cells or slowing down their growth. Melatonin, an indoleamine released by the pineal gland, behaves as a radiosensitizer in breast cancer, since it enhances the therapeutic effects of ionizing radiation and mitigates side effects on normal cells. However, the molecular mechanisms through which melatonin modulates the molecular changes triggered by radiotherapy remain mostly unknown. Here, we report that melatonin potentiated the anti-proliferative effect of radiation in MCF-7 cells. Treatment with ionizing radiation induced changes in the expression of many genes. Out of a total of 25 genes altered by radiation, melatonin potentiated changes in 13 of them, whereas the effect was reverted in another 10 cases. Among them, melatonin elevated the levels of PTEN and NME1, and decreased the levels of SNAI2, ERBB2, AKT, SERPINE1, SFN, PLAU, ATM and N3RC1. We also analyzed the expression of several microRNAs and found that melatonin enhanced the effect of radiation on the levels of miR-20a, miR-19a, miR-93, miR-20b and miR-29a. Rather surprisingly, radiation induced miR-17, miR-141 and miR-15a but melatonin treatment prior to radiation counteracted this stimulatory effect. Radiation alone enhanced the expression of the cancer suppressor miR-34a, and melatonin strongly stimulated this effect. Melatonin further enhanced the radiation-mediated inhibition of Akt. Finally, in an in vivo assay, melatonin restrained new vascularization in combination with ionizing radiation. Our results confirm that melatonin blocks many of the undesirable effects of ionizing radiation in MCF-7 cells and enhances changes that lead to optimized treatment results. This article highlights the effectiveness of melatonin as both a radiosensitizer and a radioprotector in breast cancer. Melatonin is an effective adjuvant molecule to radiotherapy, promoting anti-cancer therapeutic effects in cancer treatment. Melatonin modulates molecular pathways altered by radiation, and its use in clinic might lead to improved therapeutic outcomes by enhancing the sensitivity of cancerous cells to radiation and, in general, reversing their resistance toward currently applied therapeutic modalities.
Socket shield technique: An unconventional method for immediate implant placement - A review

The aim of this review is to present the currently available studies on the treatment outcome of socket shield technique (SST) with an attempt to compare it with the conventional technique for immediate implant placement. An electronic search was performed using PubMed, Google Scholar, and Cochrane databases. All relevant human studies reporting the treatment outcome of SST in conjunct with immediate implant placement were included. In vitro studies, case reports, reviews, systematic reviews and articles not related to SST were excluded. The initial electronic database search identified 606 articles. After removing the duplicates, reading the titles and abstracts, 19 articles were eligible for full-text reading. Two case series were excluded as the specific treatment outcomes of the clinical cases were not mentioned. Further, one article was included after hand searching of the reference lists. Eighteen articles were included for the final review. These 18 articles consisted of 15 full texts and 3 abstracts. Out of them, 3 were randomized controlled trials, 7 were retrospective studies, 4 were prospective studies, 1 was a prospective case series, 1 was a prospective nonrandomized controlled study and 2 were comparative studies. This review concludes that though the implant survival rate may be comparable in SST and the conventional technique, the SST seems to perform better in terms of bone preservation, esthetic outcome, and patient satisfaction. Furthermore, further randomized clinical trials are required to generate strong evidence for recommending SST over the conventional technique for long-lasting successful treatment outcomes with immediate implants.
Machine Learning Techniques for Opinion Mining from Social Media

Expressing emotions through various channels is part of human life. Directly or indirectly, we somehow reflect our opinions through speech, writings, etc., in our daily life. Opinions containing emotional or sentimental words have huge impact in the society. Analyzing the emotions and sentiments of people has its own importance. For example, we can measure the well being of a society, prevent suicides, and measure the degree of satisfaction of their customers by analyzing the comments or the feedback. The world wide web sites like social media, forums, review sites, and blogs generate a large volume of data in the form of opinion, emotion, and sentiment about social events, government policies, political events etc. Increased use of technology has made people proactively express their opinion through social media sites like Twitter, Facebook, and Instagram. Decision makers can make use of social media content to understand how people react to policies, events, and consumer products. But, social media analytics is a complex task due to the challenges in the natural language processing of social media language. These messages do not adhere to grammatical standards. The unstructured data from the social media needs to be cleansed and well-structured for opinion mining. These messages often reflect the opinion, emotion, and sentiment of the SCIREA Journal of Computer http://www.scirea. org/journal/Computer May 8, 2022 Volume 7, Issue 1, February 2022 https://doi.org/10.54647/computer52271
Division of Suitable Eco-climatic Planting Areas of Winter Wheat in Longdong Area

Based on the winter wheat yields and meteorology data from 1972 to 2003 in Longdong,the distribution characters of the meteorological factors and the relationship between winter wheat yield and meteorological conditions during the growing periods of winter wheat were analyzed.The winter wheat planting areas in Longdong were divided into 5 different planting regions,according to the determined division indexes.The effective measures for fully utilizing climate resources,adjusting crop configuration and developing the economic were put forward.
Largely Improved Mechanical Properties of Polyurethane Nanocomposites via In Situ Polymerization with Low Loading of Graphene Oxide

Abstract Polyurethane nanocomposites were prepared and reinforced by graphene oxide (GO) via in situ polymerization. A two-step solvent-replacement process was used to perfectly disperse GO in the PU nanocomposites. The composites exhibited significant improvement in mechanical properties. With only a small amount (0.02 wt%) of GO, the tensile strength showed an increment of 60%. The interfacial interaction between GO and the polymer matrix was deeply investigated by scanning electron microscopy, Fourier transform infrared spectroscopy, atomic force microscopy, and thermogravimetric analysis. The results showed that the thickness and thermal stability of the polymer-grafted-GO increased obviously. The extreme improvement of the mechanical properties is attributed to the excellent dispersion of GO in the matrix and the strong interfacial interaction. In addition, the resiliency of the PU–GO nanocomposites is still outstanding.
Assessment of G Protein-Coupled Oestrogen Receptor Expression in Normal and Neoplastic Human Tissues Using a Novel Rabbit Monoclonal Antibody

In addition to the classical oestrogen receptors, ERα and ERβ, a G protein-coupled oestrogen receptor (GPER) has been identified that primarily mediates the rapid, non-genomic signalling of oestrogens. Data on GPER expression at the protein level are contradictory; therefore, the present study was conducted to re-evaluate GPER expression by immunohistochemistry to obtain broad GPER expression profiles in human non-neoplastic and neoplastic tissues, especially those not investigated in this respect so far. We developed and thoroughly characterised a novel rabbit monoclonal anti-human GPER antibody, 20H15L21, using Western blot analyses and immunocytochemistry. The antibody was then applied to a large series of formalin-fixed, paraffin-embedded human tissue samples. In normal tissue, GPER was identified in distinct cell populations of the cortex and the anterior pituitary; islets and pancreatic ducts; fundic glands of the stomach; the epithelium of the duodenum and gallbladder; hepatocytes; proximal tubules of the kidney; the adrenal medulla; and syncytiotrophoblasts and decidua cells of the placenta. GPER was also expressed in hepatocellular, pancreatic, renal, and endometrial cancers, pancreatic neuroendocrine tumours, and pheochromocytomas. The novel antibody 20H15L21 will serve as a valuable tool for basic research and the identification of GPER-expressing tumours during histopathological examinations.
Integrative Evaluation of Core Competence for Supply Chain Copartner

The core competence of copartners is the key factor to decide whether they can join the supply chain. And the integrative evaluation for the copartners' core competence is the typical multi-target and multi-hiberarchy problem. Some related rules are established to filter the index, and then the index system of the core competence of copartners is constructed. The practical method to avoid data distortion and the principal component analysis method including subjective evaluation to make index-weights are brought out.Moreover, the multi-index and multi-hiberarchy integrative evaluation model of selecting the supply chain partner by using the fuzzy decision-making theory is set up and demonstrated.
Mobile Opportunistic Networks: Architectures, Protocols and Applications

The widespread availability of mobile devices coupled with recent advancements in networking capabilities make opportunistic networks one of the most promising technologies for next-generation mobile applications. Are you ready to make your mark? Featuring the contributions of prominent researchers from academia and industry, Mobile Opportunistic Networks: Architectures, Protocols and Applications introduces state-of-the-art research findings, technologies, tools, and innovations. From fundamentals to advanced concepts, the book provides the comprehensive technical coverage of this rapidly emerging communications technology you need to make contributions in this area. The first section focuses on modeling, networking architecture, and routing problems. The second section examines opportunistic networking technologies and applications. Presenting the latest in modeling opportunistic network connection structures and pairwise contacts, the text discusses the fundamentals of opportunistic routing. It reviews the most-popular routing protocols and introduces a routing protocol for delivering data with load balancing and reliable transmission capabilities. Details an approach to analyzing user behavior based on realistic data in opportunistic networks Presents analytical approaches for mobility and heterogeneous connections management in mobile opportunistic networks Compares credit-based incentive schemes for mobile wireless ad hoc networks and challenged networks Discusses the combined strengths of cache-based approaches and Infostation-based approaches Addressing key research challenges and open issues, this complete technical guide reports on the latest advancements in the deployment of stationary relay nodes on vehicular opportunistic networks. It also illustrates the use of the service location and planning (SLP) technique for resource utilization with quality of service (QoS) constraints in opportunistic capability utilization networks. The book introduces a novel prediction-based routing protocol, and supplies authoritative coverage of communication architectures, network algorithms and protocols, emerging applications, industrial and professional standards, and experimental studiesincluding simulation tools and implementation test beds.