689 research outputs found
Population balance equation for collisional breakage: A new numerical solution scheme and its convergence
No full text<p><strong>Synopsis</strong></p><p>These files represent a reference implementation of the finite volume method for the solution of the discretised population balance equation for collisional breakge. Several test cases are provided. </p><p>Implementation language: Matlab (FORTRAN-derivative)</p><p>The method and its capabilities are described in<br>P. Kuswah, A. Das, J. Saha, A. Bück, "Population balance equation for collisional breakage: A new numerical solution scheme and its convergence", Communications in Nonlinear Science and Numerical Simulation, vol 121, 107244, 2023. </p><p>If the method or code is used in other work, cite<br>P. Kuswah, A. Das, J. Saha, A. Bück, "Population balance equation for collisional breakage: A new numerical solution scheme and its convergence", Communications in Nonlinear Science and Numerical Simulation, vol 121, 107244, 2023. </p><p><strong>License</strong></p><p>The implementation is distributed as-is without taking over any responsibility by the authors or their affiliated institutions for potential damages resulting from its use. </p><p>The implementation is made available under Creative Commons Attribution Non Commercial No Derivatives 4.0 International. </p><p><strong>Folder contents</strong></p><p>The reference implementations are provided for the cases discussed in the mentioned publication. The implementation of the finite volume methode is stored in the sub-folders "DPBE_Brk", calling sequence and required initialisiations are given in the files "Main_FPT.m".</p><p>In case of problems, bug reports, feel free to contact any author.</p><p>On behalf of all authors,</p><p>Andreas Bück<br>Institute of Particle Technology<br>Friedrich-Alexander-Universität Erlangen-Germany<br>[email protected]<br>www.spg.forschung.fau.de</p><p> </p><p>v1.0: 31.08.2023</p>
Innovative mnemonics in chemical education: a handbook for classroom lectures/ by Arijit Das.
No full textThis book details formulae-based, time-economic, and innovative learning techniques in chemistry, which serve to help students grow an interest in chemistry, and memorise specific aspects of the subject. It highlights the limitations of conventional methods and solves them in innovative ways. The volume also provides different chemical applications and problems, which will encourage students to solve multiple choice-type questions (MCQs), and highlights some attractive, free educational chemistry tools, which can be used in solving a number of different problems.1 online resource (182 pages
Computation of Non-dominated Points Using Compact Voronoi Diagrams
No full textWe discuss in this paper a method of finding skyline or non-dominated points in a set P of n points with respect to a set S of m sites. A point p(i) is an element of P is non-dominated if and only if for each p(j) is an element of P, j not equal i, there exists at least one point s is an element of S that is closer to p(i) than p(j). We reduce this problem of determining non-dominated points to the problem of finding sites that have non-empty cells in an additively weighted Voronoi diagram under convex distance function. The weights of the said Voronoi diagram are derived from the co-ordinates of the points of P and the convex distance function is derived from S. In the 2-dimensional plane, this reduction gives a O((m + n) log m + n log n)-time randomized incremental algorithm to find the non-dominated points
Litho Process Development for Pillars to Enable High Density 4F<SUP>2</SUP> Memory Cells at 34nm Pitch
No full textThe authors from imec and TEL wish to thank the imec AP department, MRAM program members and the involved partners for their support
Computation of spatial skyline points
No full textThe database skyline query (or non-domination query) has a spatial form: Given a setPwithnpoint sites, and a point set S of m locations of interest, a site p is an element of P is a skyline point if and only if for each q is an element of P\{p}, there exists at least one location s is an element of S that is closer topthan toq. We reduce the problem of determining skyline points to the problem of finding sites that have non-empty cells in an additively weighted Voronoi diagram under a convex distance function. The weights of said Voronoi diagram are derived from the coordinates of the sites ofP, while the convex distance function is derived from the set of locationsS. In the two-dimensional plane, this reduction gives an O((n + m) log(n + m))-time algorithm to find the skyline points.
sj-csv-1-pie-10.1177_09544089221076799 - Supplemental material for Hydroxyapatite dispersed sulphonated PEEK composite membrane: Synthesis, structural and mechanical characterization
No full textSupplemental material, sj-csv-1-pie-10.1177_09544089221076799 for Hydroxyapatite dispersed sulphonated PEEK composite membrane: Synthesis, structural and mechanical characterization by Tanmoy Chakraborty, Apurba Das, Bhabatosh Biswas, Sunit Sarkar, Nillohit Mukherjee, Arijit Sinha and Shubhabrata Datta in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
sj-docx-1-pij-10.1177_13506501211039736 - Supplemental material for Tribological Characteristics of Thermomechanically Processed 7075 Al Alloy Through Nano-scratch Characterization
No full textSupplemental material, sj-docx-1-pij-10.1177_13506501211039736 for Tribological Characteristics of Thermomechanically Processed 7075 Al Alloy Through Nano-scratch Characterization by Souriddha Sanyal, Ashoktaru Chakraborty, Angshuman Sarkar, Susanta K Pradhan, Utpal Madhu, Sumit Chabri, Apurba Das and Arijit Sinha in Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology</p
Observation of donor-acceptor tunnelling levels of ar(h2o)2
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Previous issue date: 24Water dimer is probably the most extensively studied hydrogen bonded system. The ground vibrational state of (HO) is eight-fold degenerate and it splits into six levels (A, E, B, A, E, B). It has a large \textit{a}-dipole, which inverses on donor-acceptor interchange tunnelling. The result is that the E states of (HO) give spectra of the rigid rotor type whereas the A and B states give rotational tunnelling spectra\footnote{ G. T. Fraser, International Review in Physical Chemistry, 1991, 10, 189–206.}.
The incorporation of argon (Ar) introduces a new dipole in the system (along the trimer a-axis). The (HO) (dimer) ‘‘a’’ axis is the ‘‘b’’ axis for the Ar(HO) (trimer). In the trimer, the ‘\textit{a}-dipole’ transitions appear rigid rotor like for all three tunnelling states, whereas the ‘\textit{b}-dipole’ transitions show tunnelling splitting spectra. Due to the reduced barrier height in Ar(DO), the three states namely A, E, B could be observed previously. The splitting is measured to be only 106 MHz\footnote{E. Arunan, T. Emilsson, H. S. Gutowsky, The Journal of chemical physics, 2002, 116, 4886-4895} in Ar(DO) compared to 1 GHz in (DO).
The tunnelling splitting in Ar(HO) could not be observed early as the splitting was expected to be several GHz. Moreover, only the A and E states are allowed for the Ar(HO) as the other B state has zero statistical weight. The A state could appear either above or below the E states depending on the K quantum number. With the help of a fourfold periodic potential\footnote{J. D. Lewis, T. B. Malloy Jr, T. H. Chao, J. Laane, Journal of Molecular Structure, 1972, 427-449}, we have accurately predicted the fingerprints of \textit{b}-dipole AA transitions and observed them using a pulsed nozzle Balle-Flygare Fourier transform microwave spectrometer. Measurement of these transitions enabled us to determine the donor-acceptor tunnelling splitting of 4257.41(4) MHz in Ar(HO), compared to about 20 GHz in (HO). Also the more detailed structural parameters of the Ar(HO) have been evaluated in this work and critically compared with the (HO)
Cross network information sharing for handheld device based distributed system.
No full text13th International Command and Control Research and Technology Symposium (ICCRTS), June 17-19, 2008, Seattle, WA.TwiddleNet leverages on smart phones to facilitate information sharing among first responder teams during humanitarian aid and mass casualty scenarios. Situational awareness and relief efforts coordination can thus be derived from the timely and shared information. In view of large-scale disaster relief efforts, TwiddleNet is likely to operate in multiple sites with unique network establishments. The thesis focuses on testing various scenarios for cross-network, information-sharing operations. A new architecture, based on the study of the Nokia Mobile Server concepts and existing TwiddleNet operating models, is suggested in the thesis as well.Technology Agency author (civilian).http://archive.org/details/crossnetworkinfo10945450
Predicting the hybridization state: a comparative study between conventional and innovative formulae
No full textIn previous published articles, formulae-based mnemonics by counting the total number of σ bonds with a lone pair of electrons (LP), a localized negative charge (LNC), or a localized lone pair of electrons (LLP) and subtracting one (01) from this total value (TSLP, TSLNC, or TSLLP) to predict the power of the hybridization state of simple molecules or ions and organic compounds, including heterocyclic compounds have been discussed. These are the innovative and time-efficient methods of enhancing student interest. Here, in this new article, the limitations of conventional formulae in comparison to the use of innovative formulae have been discussed along with the application of the hybridization state in different fields of chemical education. This article encourages students to solve multiple choice type questions (MCQs) at different competitive examinations in a time economic ground on the prediction of hybridization state of simple molecules or ions to know their normal and subnormal geometry and prediction of hybridization state of hetero atom in different heterocyclic compounds to know the planarity of the compounds, which is very essential factor for prediction of aromaticity of heterocyclic compounds. Educators can use this comparative study in their classroom lectures to make chemistry authentic and intriguing. Because the use of mnemonics in classroom lectures is an essential tool to become a distinguished educator
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