1,721,144 research outputs found
Supplemental material for Indian summer monsoon variability and vegetation changes in the core monsoon zone, India, during the Holocene: A multiproxy study
No full textSupplemental material, Supplemental_Material for Indian summer monsoon variability and vegetation changes in the core monsoon zone, India, during the Holocene: A multiproxy study by Kamlesh Kumar, Shailesh Agrawal, Anupam Sharma and Shilpa Pandey in The Holocene</p
sj-pdf-1-jit-10.1177_15280837221090663 – Supplemental Material for A detailed investigation of N95 respirator sterilization with dry heat, hydrogen peroxide, and ionizing radiation
No full textSupplemental Material, sj-pdf-1-jit-10.1177_15280837221090663 for A detailed investigation of N95 respirator sterilization with dry heat, hydrogen peroxide, and ionizing radiation by Amit Kumar, Shailesh Joshi, Subramanian Venkatesan and Venkatraman Balasubramanian in Journal of Industrial Textiles</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Designing and implementation of interfacing circuit for CM of HV UG cables
Full text linkM.E.-Power Systems-ThesisIt is well known fact that the moisture content and heat generated from the cables deteriorates the insulation resistance and the cable sheath. For the comfort and reliable transaction of power of buried cables, high voltage cables are used. Oil-filled high voltage cable is most commonly used for well transmission and distribution of electrical energy. Oil-filled (132-500 kV) are laid in specially constructed concrete lined trenches. Surroundings of the cores are the combination of filler material giving the mechanical support with the capacity to conduct heat away from the cables. Theampacity of the cable to function within its characteristics and overall the structure life-time is influenced by the thermal conductivity of the adjacent materials. With the increase in moisture content, thermal conductivity also increases.
For computing the data analysis of moisture content and temperature inside the cable conduit, I have designed an interfacing circuit for condition monitoring of HV buried cables which works on a relaxation oscillator phenomena and based on a Wheatstone bridge. The designed interfacing circuit utilizes two different resistive sensors (impedance moisture sensor and temperature sensor)for converting incremental resistance change due to the moisture and the temperature due to the thermal stress into frequency and duty cycle respectively. The change in resistance to the original resistance of the sensor is proportional to the moisture ingress onto the moisture sensor available in the filler material of the UG cable. This circuit is simulated on a NI Multisim software and hardware implemented on a breadboard. Both simulation results and experimental results have been captured obtained from oscilloscope is presented.EIED, Thapar University Patial
Controlling of power MOSFET using humidity sensor
No full textM.E.-Power Systems-ThesisIn the dissertation work presented here, LMC555CM timers are used to generate the PWM signals on the basis of the humidity level present in the atmosphere. Here, we have designed a signal conditioning circuit for the triggering of semi-conductor devices such as BJT, MOSFET and IGBT etc. to control the power applied to the electrical load (5V PMDC motor). The circuit comprises of 555 dual timer, EX-OR gate (74LS86D), variable capacitor in the place of capacitive humidity sensor, 5v input supply and other basic electrical components. Signal conditioning circuit works on the principle that change in moisture level contributes to the change in dielectric constant of thin film Al2O3 based capacitive sensor used as sensing film between the two electrodes. PWM output of two dual timers is then compared by using EX-OR logic gate. The duty cycle of the logic gate output signal changes according to the change in capacitance of the capacitive sensor. For better switching performance 555 timers are used instead of other timers to get the PWM output at high frequency (near to 50 KHz). Totem-pole arrangement is used as a driver circuit for power MOSFET to reduce the switching losses at higher frequencies. These PWM signals are used as firing signals for the semi-conductor devices to control the speed of PMDC connected to the drain terminal of power MOSFET. The designed electronic circuit is simulated on NI-Multisim 12.0 software and implemented in real time on breadboard.EIED, Thapar University Patial
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Design of cosine control firing circuit using sinusoidal oscillator
Full text linkME, EIEDThe theme of dissertation is to design & implement the firing circuit for a converter. The idea
behind our dissertation is to use cosine signal for the firing circuit which has several
advantage. The various circuits like UJT relaxation oscillator triggering, RC triggering &
Ramp triggering etc undergoes the problem of limited firing angle. But Cosine Firing Scheme
(CFS) can be implemented for the very precise control of firing angle. Another advantage of
CFS is that it can be controlled digitally using microcontrollers. Thus can be used for the
closed loop circuit. For giving the AC supply of 6-0-6 V earlier we are using the Centre tap
transformer which makes the circuit bulky and also the overall cost of the firing circuit is
high. Instead of Centre tap transformer we are using sinusoidal oscillator which has a high
frequency in the firing circuit and its cost is cheaper than transformer and easily available and
the bulkiness of the firing circuit reduces. In the earlier research the voltage which we get at
the pulse transformer doesn’t have the high frequency therefore so there will be delay to turnon
the thyristor. For designing the firing circuit we are using digital & analog component
such as SCRs, BJTs, MOSFETs, 1-phase converter comparator, Monoshot, SR flip flop, 555
timer, opamp etc. The model is simulated on Multisim software and implemented on bread
board for its real time implementation and several results are obtained on oscilloscope.EIED,Thapar University,Patial
Water-mediated and instantaneous transfer of graphene grown at 220(degrees)C enabled by a plasma
No full textAtomically thin graphene holds exceptional promise to enable new functionalities and drastically improve performance of electronic, energy, sensing, and bio-medical devices. One of the most promising approaches to device-compatible graphene synthesis is chemical vapour deposition on a copper catalyst; this technique however is limited by very high temperatures (∼900 °C) and a lack of control as well as post-growth separation from the catalyst. We demonstrate and explain how, through the use of a plasma, a graphene film containing single layer graphene can be grown at temperature as low as 220 °C, the process can be controlled and an instant and water-mediated decoupling mechanism is realised. Potential use of our films in flexible transparent conductive films, electrical devices and magneto-electronics is demonstrated. Considering the benefits of catalyst reuse, energy efficiency, simplicity, and environmental friendliness, we present this versatile plasma process as a viable alternative to many existing graphene production approaches
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