PERCEPTION OF WORKING ONLINE VERSUS OFFLINE AMONG ACADEMIC PROFESSIONALS

COVID- 2019 is a challenge for the survival of humans and the society. Business organizations are facing the worst hit due to continuous lockdown. Education institutions and the universities are facing a tough time to balance teaching-learning effectiveness. Many education institutions have adopted online technology with optimum utilization of available resources; others face a tough time for survival. This study aims at understanding teachers’ perception towards offline and online teaching. 480 academic professionals were selected based on simple random sampling techniques. Paired sample T test and One-way ANOVA is used to study and find out the difference in the perception of working online and offline among academic professionals. The study finds significant differences in teachers’ perception of offline and online teaching among the academic professionals.COVID- 2019 is a challenge for the survival of humans and the society. Business organizations are facing the worst hit due to continuous lockdown. Education institutions and the universities are facing a tough time to balance teaching-learning effectiveness. Many education institutions have adopted online technology with optimum utilization of available resources; others face a tough time for survival. This study aims at understanding teachers’ perception towards offline and online teaching. 480 academic professionals were selected based on simple random sampling techniques. Paired sample T test and One-way ANOVA is used to study and find out the difference in the perception of working online and offline among academic professionals. The study finds significant differences in teachers’ perception of offline and online teaching among the academic professionals

Current-induced phase control in charged-ordered Nd0.5Ca0.5MnO3 and Pr0.6Ca0.4MnO3 crystals

Single crystals of Nd0.5Ca0.5MnO3 and Pr0.6Ca0.4MnO3 show current-induced insulator-metal transitions at low temperatures. In addition, the charge-ordering transition temperature decreases with increasing current. The electroresistive ratio, defined as r0.5/rI where r0.5 is the resistivity at a current of 0.5 mA and rI the resistivity at a given applied current, I, varies markedly with temperature and the value of I. Thermal hysteresis observed in Nd0.5Ca0.5MnO3 and Pr0.6Ca0.4MnO3 at the insulator-metal transition indicates that the transition is first-order. The current-induced changes are comparable to those induced by magnetic fields, and the insulator-metal transition in Pr0.6Ca0.4MnO3 is accordingly associated with a larger drop in resistivity.Comment: 12 pages, 3 figures, first submitted to submitted to J. Phys. D; applied physics on 18th march 200

Role of Apamarga Yavakshara in the management of Mutrashmari - A Conceptual Study

Mutrashmari is one of the most common disorders of the Mutravaha Srotas. It is one of the Astamahagada and considered as "Yama” because sometimes it causes acute excruciating pain.[1] In contemporary medical science it is correlated with urolithiasis. Symptoms in general include radiating pain from loin to groin, hematuria, burning micturition, malaise. Prevalence of Urolithiasis varies according to geographical distribution, sex and age. The treatment modalities of urolithiasis in conventional science are conservative medications and surgical procedures which are expensive, involve invasive treatments, needs hospitalization and in most of the cases recurrence rate is high. Ayurveda explains variety of Yogas for the management of Mutrashmari. A combination of Apamarga and Yava Kshara is indicated in Mutrashmari as per Rasatarangini.[2] So this study is taken up, to explore the combined effect of Apamarga and Yava Kshara in Mutrashmari keeping in view the shortcomings of different modern medical treatments

Linearizing techniques for voltage controlled oscillator based analog to digital converters

Voltage controlled oscillator (VCO) based ADC is an important class of time-domain ADC that has gained widespread acceptance due to their several desirable properties. VCO-based ADCs behave like an open-loop continuous time ΔΣ modulator and achieve excellent resolution by first order noise shaping the quantization error. However, the SNDR of an open-loop VCO-based ADC is severely distortion limited by the voltage-to-frequency tuning characteristics of the VCO. This work examines various techniques that have already been proposed to overcome the VCO tuning non-linearity problem. Two new VCO-based ADC architectures, that overcome the limitations of the conventional approaches, are proposed. In the first approach, the ADC is linearized by forcing the VCO to operate at only two operating points using a front-end two level modulator. With this technique, the linearity is improved without using either a multi-bit feedback DAC or calibration. Fabricated in a 90 nm CMOS process, the prototype ADC achieves better than 71 dB SFDR and 59.1 dB SNDR in 8 MHz signal bandwidth while consuming 4.3 mW power. The ADC achieves a figure of merit of 366 fJ/conv-step, which is comparable with other state of the art time based ADCs. In the second approach, the need for a front-end two level modulator is obviated using linearizers, which introduce an inverse of VCO’s voltage to frequency characteristics in the signal path. A deterministic digital calibration unit runs continuously in the background and builds the inverse voltage to frequency transfer function. Implemented in a 90nm CMOS process, this on-chip calibration improves SFDR of the prototype ADC from 46 dB to more than 83 dB. The ADC consumes 4.1 mW power and achieves 73.9 dB SNDR in 5 MHz signal bandwidth resulting in an excellent figure of merit of 101 fJ/conv-step