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Integrating Natural Language Processing and Software Engineering
Prasanth Yalla,Nakul Sharma 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.11
This paper tries to put various ways in which Natural Language Processing (NLP) and Software Engineering (SE) can be seen as inter-disciplinary research areas. We survey the current literature, with the aim of assessing use of Software Engineering and Natural Language Processing tools in the researches undertaken. An assessment of how various phases of SDLC can employ NLP techniques is presented. The paper also provides the justification of the use of text for automating or combining both these areas. A short research direction while undertaking multidisciplinary research is also provided.
First measurement of T -odd moments in D0→KS0π+π−π0 decays
Prasanth, K.,Libby, J.,Adachi, I.,Aihara, H.,Al Said, S.,Asner, D. M.,Aulchenko, V.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bahinipati, S.,Bakich, A. M.,Bansal, V.,Barberio, E.,Berger, M.,Bhardwaj, American Physical Society 2017 Physical Review D Vol.95 No.9
<P>We report the first measurement of the T-odd moments in the decay D-0 -> K-S(0) pi + pi(-)pi(0) from a data sample corresponding to an integrated luminosity of 966 fb(-1) collected by the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider. From these moments we determine the CP-violation-sensitive asymmetry a(CP)(T-odd) = [-0.28 +/- 1.38 (stat.)(-0.76)(+0.23) (syst.)] x 10(-3) , which is consistent with no CP violation. In addition, we perform a(CP)(T-odd) measurements in different regions of the D-0 -> K-S(0) pi + pi(-)pi(0) phase space; these are also consistent with no CP violation.</P>
Improved Stability in Lower Extremity Exoskeletons using Foot Extensions
R. Prasanth Kumar,Jungwon yoon 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Existing lower extremity exoskeletons lack sufficient foot support area to guarantee safe operation for rehabilitation of patients, and normal posture/gait for users carrying heavy loads on backpack. In order to enhance the stability of lower extremity exoskeletons, an adaptive foot system is presented. It consists of two foot extensions, one extending behind the toe and another on the heel side that extends the support area behind the heel when the foot is flat and retracts when the heel is off the ground. Such a system has an important application in rehabilitation for enhancing stability where safety of patients is critical. We present a detailed description of the adaptive foot system and analyze the stability in sagittal plane.
Arun Prasanth Nagalingam,Boon Loong Toh,Swee Hock Yeo 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.10 No.3
Polishing the laser powder bed fused (L-PBF) components and achieving uniform roughness is exceptionally challenging. Moreover, retaining the dimensional integrity of intricate features during polishing is difficult. This research aims to overcome these issues by developing a novel multi-jet hydrodynamic cavitation abrasive finishing (MJ-HCAF) approach for polishing the complex L-PBF components. The technique proposed in this article uses cavitation principles as a constructive tool for polishing hard-to-machine materials within 10 min. A new industrial-scale apparatus was developed to realize the proposed concept. L-PBF Inconel 625 surfaces were polished to demonstrate the MJ-HCAF technique's effectiveness. The MJ-HCAF technique resulted in up to ~ 85% improvement in surface texture quality (final Sa ≤ 0.5 µm; Sz ≤ 10 µm). Moreover, the final appearance was controlled to glossy or matt polish to suit aerospace aesthetic requirements. The proposed technique uses water as the primary working fluid with abrasives ≤ of 1.0% to generate a polished surface (conventional abrasive-based methods use 60–80%)—indicating an emerging class of cleaner manufacturing process. The Product Sustainability Index (PSI) for a sustainable approach showed that cavitation-assisted abrasive polishing mode has the highest PSI score of 7.88. The key factors leading to its high score are its synergistic effects, low-cost water operation, and extremely low abrasive usage.
A Sectional Matrix Method for IPT Coil Shape Optimization
Venugopal Prasanth,Pavol Bauer,J.A. Ferreira 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
In this paper, Neumann’s integral is evaluated for computing self-inductance using a multi-turn sectional matrix method. Analytical equations are derived considering the increase in dimensions of the coil due to an impinging air-gap between the turns. The resulting sectional self-inductance matrix is computed and the concepts of sectional partial self-inductance and sectional partial mutual inductance are introduced. The effects of the various partial inductances are considered as a function of the air-gap, dimensions and turns. Further, the mutual inductance of a pair of coils is considered and the coupling is obtained analytically. The coils considered are to be used for shape optimization of IPT coils. Finally, the results are compared with experimentation. This technique being generic can be applied to a number of different polygonal shapes and can be further simplified by the theory of vector decomposition of current elements. A case study with self-inductance and perimeter as optimization objective is considered.
A novel dynamic walker with heel, ankle, and toe rocker motions
Kumar, R. Prasanth,Ö,zer, Abdullah,Kim, Gabsoon,Yoon, Jungwon Cambridge University Press 2011 Robotica Vol.29 No.6
<B>SUMMARY</B><P>This paper proposes a novel dynamic walker capable of walking with heel, ankle, and toe rocker motions. The heel and toe rocker motions are obtained by using inelastic stoppers between leg and foot, which limit the range of rotation of the foot about the ankle joint. A generalized set of equations of motion and associated transition equations applicable for multiple foot segments is derived. Passive dynamic walking is studied with equal heel and toe strike angles for the case of symmetric foot walking. It is shown that by including the ankle joint, low-speed walking is made possible. The energy efficiency of the proposed walker is studied theoretically and through numerical simulations. Finally, three different underactuated modes of active walking that do not require toe and heel actuation are presented. In order to implement these modes of walking, the proposed walker can be constructed with little modification from an existing flat-foot walker that uses ankle rocker motion alone. Results show that substantial benefits can be obtained in efficiency and stability compared to point/flat-foot walker of the same leg length and mass distribution.</P>
Pramod Kumar(Pramod Kumar ),Prasanth T(Prasanth T ),Satisha TS(Satisha TS ),Nitin Gupta(Nitin Gupta ),Sumita Manandhar(Sumita Manandhar ) 대한치과이식임플란트학회 2022 The Korean Academy of Implant Dentistry Vol.41 No.3
Immediate implant placement is the current modality to provide implant placement following tooth extraction. Immediate implants in posterior multirooted teeth pose challenges in terms of proper angulation and parallelism. Engaging the inter-radicular septal bone provides the advantage of primary stability. Osteotomy site preparation through the septal bone with roots of the natural teeth as a guide provides a precise osteotomy procedure with minimal collateral damage to the adjacent area. This case series aimed to assess the success of immediate implant placement in posterior multirooted teeth using the residual roots as anatomical guides. Three cases of grossly decayed posterior teeth were treated with immediate implant placement. The osteotomy site was prepared using the roots as surgical guides. Implant stability was assessed by resonance frequency analysis (RFA) immediately after placement and 6 months post-op. Healing was uneventful in all cases. Optimal implant stability quotient (ISQ) values of above 70 were achieved, which are suggestive of good primary stability. The desired angulation and parallelism were obtained by utilizing the residual roots as anatomical guides. Six months post-surgically, the patient presented with healthy peri-implant tissue and successful osseointegration. Root-guided implant placement is a novel technique wherein residual roots provide a surgical guide for the placement of immediate implants in multirooted posterior teeth.