7 research outputs found
Identification of Surface Defects on Solar PV Panels and Wind Turbine Blades using Attention based Deep Learning Model
According to Global Electricity Review 2022, electricity generation from
renewable energy sources has increased by 20% worldwide primarily due to more
installation of large green power plants. Monitoring the renewable energy
assets in those large power plants is still challenging as the assets are
highly impacted by several environmental factors, resulting in issues like less
power generation, malfunctioning, and degradation of asset life. Therefore,
detecting the surface defects on the renewable energy assets would facilitate
the process to maintain the safety and efficiency of the green power plants. An
innovative detection framework is proposed to achieve an economical renewable
energy asset surface monitoring system. First capture the asset's
high-resolution images on a regular basis and inspect them to detect the
damages. For inspection this paper presents a unified deep learning-based image
inspection model which analyzes the captured images to identify the surface or
structural damages on the various renewable energy assets in large power
plants. We use the Vision Transformer (ViT), the latest developed deep-learning
model in computer vision, to detect the damages on solar panels and wind
turbine blades and classify the type of defect to suggest the preventive
measures. With the ViT model, we have achieved above 97% accuracy for both the
assets, which outperforms the benchmark classification models for the input
images of varied modalities taken from publicly available sources
A Resilient Power Distribution System using P2P Energy Sharing
The adoption of distributed energy resources (DERs) such as solar panels and
wind turbines is transforming the traditional energy grid into a more
decentralized system, where microgrids are emerging as a key concept.
Peer-to-Peer (P2P) energy sharing in microgrids enhances the efficiency and
flexibility of the overall system by allowing the exchange of surplus energy
and better management of energy resources. This work analyzes the impact of P2P
energy sharing for three cases - within a microgrid, with neighboring
microgrids, and all microgrids combined together in a distribution system. A
standard IEEE 123 node test feeder integrated with renewable energy sources is
partitioned into microgrids. For P2P energy sharing between microgrids, the
results show significant benefits in cost, reduced energy dependence on the
grid, and a significant improvement in the system's resilience. We also
predicted the energy requirement for a microgrid to evaluate energy resilience
for the control and operation of the microgrid. Overall, the analysis provides
valuable insights into the performance and sustainability of microgrids with
P2P energy sharing.Comment: arXiv admin note: text overlap with arXiv:2212.0231
Modelling of the Electric Vehicle Charging Infrastructure as Cyber Physical Power Systems: A Review on Components, Standards, Vulnerabilities and Attacks
The increasing number of electric vehicles (EVs) has led to the growing need
to establish EV charging infrastructures (EVCIs) with fast charging
capabilities to reduce congestion at the EV charging stations (EVCS) and also
provide alternative solutions for EV owners without residential charging
facilities. The EV charging stations are broadly classified based on i) where
the charging equipment is located - on-board and off-board charging stations,
and ii) the type of current and power levels - AC and DC charging stations. The
DC charging stations are further classified into fast and extreme fast charging
stations. This article focuses mainly on several components that model the EVCI
as a cyberphysical system (CPS)
Samanantar: The Largest Publicly Available Parallel Corpora Collection for 11 Indic Languages
We present Samanantar, the largest publicly available parallel corpora
collection for Indic languages. The collection contains a total of 49.7 million
sentence pairs between English and 11 Indic languages (from two language
families). Specifically, we compile 12.4 million sentence pairs from existing,
publicly-available parallel corpora, and additionally mine 37.4 million
sentence pairs from the web, resulting in a 4x increase. We mine the parallel
sentences from the web by combining many corpora, tools, and methods: (a)
web-crawled monolingual corpora, (b) document OCR for extracting sentences from
scanned documents, (c) multilingual representation models for aligning
sentences, and (d) approximate nearest neighbor search for searching in a large
collection of sentences. Human evaluation of samples from the newly mined
corpora validate the high quality of the parallel sentences across 11
languages. Further, we extract 83.4 million sentence pairs between all 55 Indic
language pairs from the English-centric parallel corpus using English as the
pivot language. We trained multilingual NMT models spanning all these languages
on Samanantar, which outperform existing models and baselines on publicly
available benchmarks, such as FLORES, establishing the utility of Samanantar.
Our data and models are available publicly at
https://indicnlp.ai4bharat.org/samanantar/ and we hope they will help advance
research in NMT and multilingual NLP for Indic languages.Comment: Accepted to the Transactions of the Association for Computational
Linguistics (TACL
LEARN: A multi-centre, cross-sectional evaluation of Urology teaching in UK medical schools
OBJECTIVE: To evaluate the status of UK undergraduate urology teaching against the British Association of Urological Surgeons (BAUS) Undergraduate Syllabus for Urology. Secondary objectives included evaluating the type and quantity of teaching provided, the reported performance rate of General Medical Council (GMC)-mandated urological procedures, and the proportion of undergraduates considering urology as a career. MATERIALS AND METHODS: LEARN was a national multicentre cross-sectional study. Year 2 to Year 5 medical students and FY1 doctors were invited to complete a survey between 3rd October and 20th December 2020, retrospectively assessing the urology teaching received to date. Results are reported according to the Checklist for Reporting Results of Internet E-Surveys (CHERRIES). RESULTS: 7,063/8,346 (84.6%) responses from all 39 UK medical schools were included; 1,127/7,063 (16.0%) were from Foundation Year (FY) 1 doctors, who reported that the most frequently taught topics in undergraduate training were on urinary tract infection (96.5%), acute kidney injury (95.9%) and haematuria (94.4%). The most infrequently taught topics were male urinary incontinence (59.4%), male infertility (52.4%) and erectile dysfunction (43.8%). Male and female catheterisation on patients as undergraduates was performed by 92.1% and 73.0% of FY1 doctors respectively, and 16.9% had considered a career in urology. Theory based teaching was mainly prevalent in the early years of medical school, with clinical skills teaching, and clinical placements in the later years of medical school. 20.1% of FY1 doctors reported no undergraduate clinical attachment in urology. CONCLUSION: LEARN is the largest ever evaluation of undergraduate urology teaching. In the UK, teaching seemed satisfactory as evaluated by the BAUS undergraduate syllabus. However, many students report having no clinical attachments in Urology and some newly qualified doctors report never having inserted a catheter, which is a GMC mandated requirement. We recommend a greater emphasis on undergraduate clinical exposure to urology and stricter adherence to GMC mandated procedures
Biochemical and <i>in silico</i> analysis of the binding mode of erastin with tubulin
Erastin (ERN) is a small molecule that induces different forms of cell death. For example, it has been reported to induce ferroptosis by disrupting tubulin subunits that maintain the voltage-dependent anion channels (VDACs) of mitochondria. Although its possible binding to tubulin has been suggested, the fine details of the interaction between ERN and tubulin are poorly understood. Using a combination of biochemical, cell-model and in silico approaches, we elucidate the interactions of ERN with tubulin and their biological manifestations. After confirming ERN's antiproliferative efficacy (IC50, 20 ± 3.2 M) and induction of cell death in the breast cancer cell line MDA-MB-231, the binding interactions of ERN with tubulin were examined. ERN bound to tubulin in a concentration-dependent manner, disorganizing the structural integrity of the protein, as substantiated via the tryptophan-quenching assay and the aniline-naphthalene sulfonate binding assay, respectively. In silico studies based on molecular docking revealed a docking score of −5.863 kcal/mol, suggesting strong binding interactions of ERN with tubulin. Additionally, molecular dynamics simulation and Molecular Mechanics Poisson–Boltzmann Surface Area (MM-PBSA) analyses evinced the binding free energy (ΔGbinding) of −31.235 kcal/mol, substantiating strong binding affinity of ERN with tubulin. Ligplot analysis showed hydrogen bonding with specific amino acids (Asn A226, Thr A223, Gln B247 and Val B355). QikProp-based ADME (absorption, distribution, metabolism and excretion) assessment showed considerable therapeutic potential for ERN. Communicated by Ramaswamy H. Sarma</p