3-D Prediction of Uncut Fiber for Unidirectional CFRP Drilling

Anand Prakash Jaiswal(아난드 프라카쉬 자이스왈),Hyung Wook Park(박형욱) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.6

An Enhanced Cellular Automata based Scheme for Noise Filtering

Anand Prakash Shukla,Suneeta Agarwal 보안공학연구지원센터(IJSIP) 2014 International Journal of Signal Processing, Image Vol.7 No.4

An Automatic Detection of Sleep using Different Statistical Parameters of Single Channel EEG Signals

Anand Prakash,Vandana Roy 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.10

The present work deals with the automatic detection of the sleep stages from the single-channel EEG data. Various stages of sleep are Awake, sleep stage 1, 2, 3 and 4 and rapid eye movement. Statistical attributes are extracted with the help of Ensemble Empirical Mode Decomposition, Hjorth parameter and zero-crossing rate. Ten-cross fold classification process is followed after best ranked attribute selection. After attributes are selected, the data is classified using bagging classifier. Accuracies of 98.46%, 95.62%, 93.87%, 93.17% and 91.93% for two-stages, three-stages, four-stages, five-stages and six-stages classification respectively. This classifier can be used for the real life application due to higher accuracies.

A Review on EEG Artifacts and its Different Removal Technique

Anand Prakash,Vandana Roy 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.9

Electroencephalograms are the neurological signals which help in the study of various diseases. These are often contaminated with various artifacts. It is difficult to study and analysis of brain signals in the existence of these artifacts. EOG, ECG, motion and EMG are the common artifacts which cause disturbance to neurological signal. This review paper focuses on the artifact removal techniques with their features. Important parameters were taken into consideration while the study of various published papers. Strength and weakness of each paper are mentioned. This review of various papers is best of my knowledge.

Touring the online matchmaking platform: A study of the “sado-ritual syndrome” with a special reading of Shashi Deshpande’s The Binding Vine

Nikita ANAND,Kumar PARAG,Aditya PRAKASH Asian Center for Women's Studies : Ewha Womans Uni 2023 Asian Journal of Women's Studies(AJWS) Vol.29 No.4

Eligible bachelors and bachelorettes trust matchmaking services reverentially and sometimes go across the seven seas to meet, communicate, romance, and understand their chosen one. Platforms like Jeevansathi.com, Shaadi.com, and Bharat Matrimony promise to help them make the right marriage decision and get along for true compatibility. However, they have also contributed to the growing politics of “Sado-Ritual Syndrome” against the female population. Such matchmaking platforms work to convince both parties to manipulate each other with Western matrimony features such as a salaried male partner, a grand wedding, monogamy, multilingualism, and preferences based on profession and class. Shashi Deshpande, in her novel The Binding Vine, written in 1993, has elaborately addressed these features to critically investigate how sex in heterosexual marital relationships strips the wife of choice, respect, and agency by making the husband’s ejaculation the major responsibility of the wife. This paper attempts to expose this ideological system of matchmaking and its role in building people’s otherness encouraging them to treat human beings as options.

Factors influencing the career preferences of medical students and interns: a cross-sectional, questionnaire-based survey from India

Ruban Anand,Prakash Somi Sankaran 한국보건의료인국가시험원 2019 보건의료교육평가 Vol.16 No.-

Purpose: The study aimed to identify the motivational factors and demographic variables influencing the career preferences of medical students and interns in India. Methods: We conducted a questionnaire-based survey at Christian Medical College, Vellore, India. The participants were 368 of the 460 medical students and interns enrolled at the institution from October 2015 to August 2016. We designed the questionnaire to collect demographic data, students’ preferences for career specialties, and the motivational factors influencing them. Then, we analyzed the influence of these factors and demographic variables on career preferences using regression analysis. Results: Of the 368 respondents, 356 (96.7%) expressed their intention to pursue a residency program (known as postgraduate courses in India) after the Bachelor of Medicine and Bachelor of Surgery (MBBS) program, and about two-thirds indicated their preference to do so in India. The specialties most preferred by students were general surgery, general medicine (internal medicine), and pediatrics, while the least preferred were anatomy, obstetrics and gynecology, and community medicine (also known as social and preventive medicine). Factor analysis yielded three motivational factors, which we named ‘personal growth,’ ‘professional growth,’ and ‘personal satisfaction’ based on the items loaded in each. The motivational factors were predicted by demographic variables (gender, geographical background, current stage in the MBBS program, and the presence of relatives in the health professions). Demographic variables and the motivational factors also had significant influences on career preferences. Conclusion: This study provides insights into the motivational factors that influence the career preferences of Indian medical students and interns. A robust longitudinal study would be required to study intra-individual variations in preferences and the persistence of choices.

Chemical strain formation through anion substitution in Cu₂WS₄ for efficient electrocatalysis of water dissociation

Tiwari, Anand P.,Azam, Ashraful,Novak, Travis G.,Prakash, Om,Jeon, Seokwoo The Royal Society of Chemistry 2018 Journal of Materials Chemistry A Vol.6 No.17

<P>Researchers have revealed that the electrocatalytic activity can be improved by creation of defects in the crystal lattice of 2D layered transition metal dichalcogenides (TMDCs) or ternary metal chalcogenides (TMCs) such as MoS2 or Cu2MoS4, respectively. However, the role of anion substitution in the enhancement of overall electrocatalytic activity in TMCs remains unproven. Here, we show the substitution of anion atom sulfur (S) with selenium (Se) in a new electrocatalyst Cu2WS4 for efficient hydrogen evolution reaction (HER) activity. The higher electrocatalytic activity of Cu2WS4 after anion atom substitution can be attributed to the creation of chemical strain in the lattice, which causes an increase of active sites for hydrogen adsorption and desorption. Experimentally, the anion substituted Cu2W(SySe1 − y)4 samples show superior electrocatalytic activities with a low onset potential of −0.320 V at 10 mA cm<SUP>−2</SUP> for the HER, which is two-fold lower than that of the pristine Cu2WS4 (−0.650 V at 10 mA cm<SUP>−2</SUP>) sample. In addition, after 1000 cycles with continuous electrolysis in an acid electrolyte for 12 h, the anion substituted samples Cu2W(SySe1 − y)4 preserve their structure and robust catalytic activity perfectly. As a result, our work demonstrates a new approach for developments of real applications of TMCs in energy conversion.</P>

Prediction of weld zone shape with effect of tool pin profile in friction stir welding process

Prashant Prakash,Ravi Shankar Anand,Sanjay Kumar Jha 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.1

This article investigates the effect of tool pin profile on weld zone shape using computational fluid dynamics techniques in friction stir welding process. The effect of tool pin profile on weld zone shape was investigated by four different pin profile tools: Cylindrical, conical, cylindrical-conical and stepped-conical. In the numerical simulation process, workpiece material and tool are considered as non-Newtonian fluids and solid material, respectively. And simulation is carried out under transient state condition. Temperature distribution and material flow profile developed by the tool pin profile are analyzed for the understanding of viscosity profile of the weld zone region. Critical iso-viscosity surface is developed from the viscosity profile to determine the difference between deformed and undeformed material, which is finally used to determine the weld zone shape. The simulation result shows that maximum temperature and material flow velocity are produced by stepped-conical pin profile tool with respect to all other tools. It is observed from the iso-viscosity surface analysis that a vaseshaped geometry developed around the contact region of the tool and workpiece. The weld zone shape produced by stepped-conical pin profile tool is cylinder dominant vase shape, and weld zone shape of all other tools is basin dominant vase shape. Numerical model was also validated with experimental results of temperature distribution and weld zone shape thickness which showed good agreement.

Highly active and stable layered ternary transition metal chalcogenide for hydrogen evolution reaction

Tiwari, Anand P.,Kim, Doyoung,Kim, Yongshin,Prakash, Om,Lee, Hyoyoung Elsevier 2016 Nano energy Vol.28 No.-

<P><B>Abstract</B></P> <P>Layered ternary transition metal chalcogenides (TTMCs) material has great potentials that can overcome to the limitation of active sites which is challenging in binary transition metal chalcogenides (BTMC), such as MoS<SUB>2</SUB>, towards electrochemical hydrogen production. Here, we demonstrate TTMC material which contains two transition metals Cu and Mo with chalcogen S. The TTMC, Cu<SUB>2</SUB>MoS<SUB>4</SUB> has been successfully synthesized by a facile solution-processed method. Moreover, by anion doping such as Se in as the synthesized Cu<SUB>2</SUB>MoS<SUB>4</SUB>, it has been found that TTMC can be exfoliated into single layer nanosheets. Furthermore, by controlling the number of layers, single layers TTMC exhibit the highest electrocatalytic activity towards hydrogen evolution reaction (HER) because the single layers can provide more catalytic active sites than multilayers and bulk. The onset potential for hydrogen generation is −96mV for single layer TTMC electrode material with corresponding Tafel slope 52mV/decade. After 1000 cycles with continuous electrolysis in acid electrolyte for 15h, the electrode material preserves its structure and robust catalytic activity perfectly. Our new TTMC materials show highly active electrocatalytic performance and high stability which overcome the intrinsic limitation of BTMC. As a result, our work can guide new strategy for the developments of real applications of TMCs in HER.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Single layered ternary transition metal chalcogenides have been synthesized for highly active and stable electrocatalyst. </LI> <LI> Se-doping plays an essential role to exfoliate Cu<SUB>2</SUB>Mo(S<SUB>1-y</SUB>Se<SUB>y</SUB>)<SUB>4</SUB> for high electrochemical active surface. </LI> <LI> Se-doping strategy can be implemented to exfoliate and enhance electrocatalytic activity of transition metals chalcogens. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Effective approaches to synthesis of single layered ternary transition metal chalcogenide (TTMC) have been developed to produce highly active and stable electrocatalyst towards hydrogen evolution reaction. The single layered TTMC are achieved by Se-doping in Cu<SUB>2</SUB>MoS<SUB>4</SUB> which can be applicable for other transition metal chalcogenide (TMC).</P> <P>[DISPLAY OMISSION]</P>

Transgenic potato overproducing L-ascorbic acid resisted an increase in methylglyoxal under salinity stress via maintaining higher reduced glutathione level and glyoxalase enzyme activity.

Upadhyaya, Chandrama Prakash,Venkatesh, Jelli,Gururani, Mayank Anand,Asnin, Leonid,Sharma, Kavita,Ajappala, Hemavathi,Park, Se Won Kluwer Academic Publishers 2011 Biotechnology letters. Vol.33 No.11

<P>Salt-tolerance was studied in transgenic potato. It was conferred by overexpression of ascorbate pathway enzyme (D-galacturonic acid reductase, GalUR). As genetic engineering of the GalUR gene in potato enhances its ascorbic acid content (L-AsA), and subsequently plants suffered minimal oxidative stress-induced damage, we now report on the comprehensive aptness of this engineering approach for enhanced salt tolerance in transgenic potato (Solanum tuberosum L. cv. Taedong Valley). Potatoes overexpressing GalUR grew and tuberized in continuous presence of 200 mM of NaCl. The transgenic plants maintained a higher reduced to oxidized glutathione (GSH:GSSG) ratio together with enhanced activity of glutathione dependent antioxidative and glyoxalase enzymes under salinity stress. The transgenics resisted an increase in methylglyoxal that increased radically in untransformed control plants under salinity stress. This is the first report of genetic engineering of ascorbate pathway gene in maintaining higher level of GSH homeostasis along with higher glyoxalase activity inhibiting the accumulation in methylglyoxal (a potent cytotoxic compound) under salt stress. These results suggested the engineering of ascorbate pathway enzymes as a major step towards developing salinity tolerant crop plants.</P>