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RISS 인기검색어
- 검색키워드
- 저자 : Ravinder Singh Sawhney (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
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Sentiment analysis of demonetization of 500 & 1000 rupee banknotes by Indian government
Prabhsimran Singh,Ravinder Singh Sawhney,Karanjeet Singh Kahlon 한국통신학회 2018 ICT Express Vol.4 No.3
All government policies have a down side and the burden of the down side is often felt only by the common man. This paper considers one such government policy, the demonetization of high denomination currency by the Indian government that took effect midnight on November 8, 2016. In this paper, we have minutely analyzed this government policy from the common person’s perspective by using the concept of sentiment analysis and taking Twitter as a tool. In addition to performing a nation-wide analysis, we have also performed state-wide analysis using geolocation to further elucidate the reasons of displeasure among people of respective states.
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Design of fullerene-based biomarker for detection of lead impurities
Milanpreet Kaur,Ravinder Singh Sawhney,Derick Engles,Rupan Preet Kaur 한국통신학회 2016 ICT Express Vol.2 No.4
The fullerene-based molecular junction in a device configured for sensor applications in medical diagnostics has been evaluated in this study. The presence of highly carcinogenic agents such as lead is detected using this molecular device, which is configured and investigated using extended Hückel theory (EHT) and the non-equilibrium Green’s function. The electrical parameters that we calculated can be employed to determine the concentration of lead impurities by evaluating its transmission coefficients and molecular orbitals. Our results suggests that the alignment of current increases with increasing impurity level (i.e., of 6, 12, and 18 lead atoms), thus indicating sensor characteristics.
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Contemplating charge transport by modeling of DNA nucleobases based nano structures
Rajan Vohra,Ravinder Singh Sawhney,Kunwar Partap Singh 한국물리학회 2020 Current Applied Physics Vol.20 No.5
Electrical charge transport through two basic strands Thymine and Adenine of DNA has been analyzed using jellium model approach. The FFT-2D computations have been performed for semi empirical Extended Huckel Theory using Atomistix Tool kit to contemplate the charge transport metrics like current and conductance. We have scrutinized the behavior of the devices in the range of -2 V–2 V for a step size of 0.2 V. A prominent observation is the drop in HLGs of Adenine and Thymine, when working as device as compared to their intrinsic values and this is comparative more visible in case of Adenine. The current in the thymine based device exhibit linear increase with voltage in spite of having low conductance. Further the broader transmission peaks represent the strong coupling of electrodes to the scattering molecule (Thymine). The NDR effect of Adenine based device for higher bias can be utilized in various future electronics applications.
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Non-invasive cancer detection using molecular device based on aromatic molecules
Rupan Preet Kaur,Ravinder Singh Sawhney,Derick Engles,Milanpreet Kaur 한국통신학회 2016 ICT Express Vol.2 No.4
Major advances in the molecular diagnostics of screening tissue and blood samples have fueled the search for biomarkers and diagnostic nanosensors that can detect abnormalities early in their development cycles. In this paper, we propose an aromatic molecular junction-based biomarker that can trace the concentration of lead in any live sample. A nanomolecular device based on an anthracenedithiol molecule was modeled. Its electrical transport attributes were computed using a semi-empirical extended Huckel theory combined with non-equilibrium Green’s function formalism. We observed that the current and conductance assay had prominent changes when the molecular junction device was exposed to variant concentrations of lead. Based on our results, we propose aromatic molecular junction-based biomarkers that can detect even minor adulterations of lead when plied at operating voltage range.
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