Chakram & Runthika Creative Collective: Bridging Cinema and Alternative Pop Audiences

This project aimed to diversify the stylistic output of the artistic moniker Chakram under his burgeoning umbrella production company Runthika Creative Collective. Previously, this moniker focused on composing abstract and experimental music for the films also released under this moniker. Moving forward, this portfolio will grow to incorporate produced music from a lyrically driven EP to expand the range of audiences this moniker’s work appeals to, examples from the upcoming film, In Search of Sumitra, entitled ‘Mirror Image Neurons’ and ‘Elevator to the Dream Plane,’ a vocal single ‘Turtles,’ as well as a commissioned production ‘Evolution’ for Emily Shek, MPTI 2020. While this portfolio will retain the textural emphasis associated with previous work, its focus is to bridge the worlds of experimentalism and pop and join these often disparately categorized genres and divided audiences. Furthermore, at the crossroads of this unification, there will be a liminal space for cinephile audiences to explore the fringes of pop, while simultaneously introducing casual music listeners to accessible, yet uncanny reimaginations of lyrically driven content. Innovation occurs at the interdisciplinary confluence of two seemingly unrelated concepts, marrying pop with experimentalism is essential for the growth of both genres. This juxtaposition softens formulaic songwriting structures while utilizing the framework of established structures to allow for the diaspora of alternative music to new audiences. Ultimately, this portfolio contains a range of pieces that expand this producer’s musical skills and repertoire to unexplored territories with the challenge to package challenging and fringe artistic visions within an invitation to potential new audiences.https://remix.berklee.edu/graduate-studies-production-technology/1230/thumbnail.jp

Parametric Designs and Weight Optimization using Direct and Indirect Aero-structure Load Transfer Methods

Indiana University-Purdue University Indianapolis (IUPUI)Within the aerospace design, analysis and optimization community, there is an increasing demand to finalize the preliminary design phase of the wing as quickly as possible without losing much on accuracy. This includes rapid generation of designs, an early adaption of higher fidelity models and automation in structural analysis of the internal structure of the wing. To perform the structural analysis, the aerodynamic load can be transferred to the wing using many different methods. Generally, for preliminary analysis, indirect load transfer method is used and for detailed analysis, direct load transfer method is used. For the indirect load transfer method, load is discretized using shear-moment-torque (SMT) curve and applied to ribs of the wing. For the direct load transfer method, the load is distributed using one-way Fluid-Structure Interaction (FSI) and applied to the skin of the wing. In this research, structural analysis is performed using both methods and the nodal displacement is compared. Further, to optimize the internal structure, iterative changes are made in the number of structural members. To accommodate these changes in geometry as quickly as possible, the parametric design method is used through Engineering SketchPad (ESP). ESP can also provide attributions the geometric feature and generate multi-fidelity models consistently. ESP can generate the Nastran mesh file (.bdf) with the nodes and the elements grouped according to their geometric attributes. In this research, utilizing the attributions and consistency in multi-fidelity models an API is created between ESP and Nastran to automatize the multi-fidelity structural optimization. This API generates the design with appropriate parameters and mesh file using ESP. Through the attribution in the mesh file, the API works as a pre-processor to apply material properties, boundary condition, and optimization parameters. The API sends the mesh file to Nastran and reads the results file to iterate the number of the structural member in design. The result file is also used to transfer the nodal deformation from lower-order fidelity structural models onto the higher-order ones to have multi-fidelity optimization. Here, static structural optimization on the whole wing serves as lower fidelity model and buckling optimization on each stiffened panel serves as higher fidelity model. To further extend this idea, a parametric model of the whole aircraft is also created.2021-08-1

Rapid Generation of Parametric Aircraft Structural Models

Within the aerospace design, analysis and optimization community, there is an increasing demand for automatic generation of parametric feature tree (build recipe) attributed multidisciplinary models. Currently, this is mainly done by creating separate models for different disciplines such as mid-surface model for aeroelasticity, outer-mold line for aerodynamics and CFD, and built-up element model for structural analysis. Since all of these models are built independently, any changes in design parameters require updates on all the models which is inefficient, time-consuming and prone to deficiencies. Here a browser-based system, called the Engineering Sketch Pad (ESP), is used. It provides the user with the ability to interact with a configuration by building and/or modifying the design parameters and feature tree that define the configuration. ESP is based an open-source constructive solid modeler, named OpenCSM, which is built upon the OpenCASCADE geometry kernel and the EGADS geometry generation system. The use of OpenCSM as part of the AFRL’s CAPS project on Computational Aircraft Prototype Syntheses for automatic commercial and fighter jet models is demonstrated. The rapid generation of parametric aircraft structural models proposed and developed in this work will benefit the aerospace industry with coming up with efficient, fast and robust multidisciplinary design standardization of aircraft structures

Ion Mobility Mass Spectrometry Uncovers Guest-Induced Distortions in a Supramolecular Organometallic Metallosquare

The encapsulation of the tetracationic palladiummetallosquare with four pyrene-bis-imidazolylidene ligands[1]4+with aseries of organic molecules was studied byElectrosprayionization Travelling Wave Ion-Mobility MassSpectrometry (ESI TWIM-MS). The method allowed todetermine the Collision Cross Sections (CCSs), whichwereused to assess the sizechanges experienced by the host uponencapsulation of the guest molecules.When fullerenes wereused as guests,the host is expanded DCCS 13 2and 23 2,forC60or C70,respectively.The metallorectangle [1]4+was alsoused for the encapsulation of aseries of polycyclic aromatichydrocarbons (PAHs) and naphthalenetetracarboxylic diimide(NTCDI), to form complexes of formula [(NTCDI)2-(PAH)@1]4+.For these host:guest adducts,the ESI IM-MSstudies revealed that [1]4+is expanded by 47–49 2.. Theenergy-minimized structures of [1]4+,[C60@1]4+,[C70@1]4+,[(NTCDI)2(corannulene)@1]4+in the gas phase were obtainedby DFT calculations.IntroductionFunding for open access charge: CRUE-Universitat Jaume

A parallelized tool to calculate the electrical mobility of charged aerosol nanoparticles and ions in the gas phase

Electrical Mobility is a transport property that describes a particle behavior in the gas phase. When dealing with the free molecular regime, ascertaining the shape of a nanoparticle or an ion directly from measurements of mobility becomes quite difficult as the particle no longer can be assumed to have spherical shape. Here we propose an efficient parallelized tool, IMoS, that makes use of all-atom models to calculate the mobility of nanoparticles in a variety of gases. The program allows for different types of calculations that range from the efficient Projection Approximation (PA) algorithm to the 4-6-12 Lennard-Jones potential Trajectory Method. It also includes a diffuse inelastic simulation that achieves Millikan's predicted 1.36 value over PA. When compared to experimental results, the error of the most efficient calculations is shown to be approximately 2–4% on average

Ion Mobility Mass Spectrometry Uncovers Guest‐Induced Distortions in a Supramolecular Organometallic Metallosquare

The encapsulation of the tetracationic palladium metallosquare with four pyrene-bis-imidazolylidene ligands [1]4+ with a series of organic molecules was studied by Electrospray ionization Travelling Wave Ion-Mobility Mass Spectrometry (ESI TWIM-MS). The method allowed to determine the Collision Cross Sections (CCSs), which were used to assess the size changes experienced by the host upon encapsulation of the guest molecules. When fullerenes were used as guests, the host is expanded ΔCCS 13 Å2 and 23 Å2 , for C60 or C70 , respectively. The metallorectangle [1]4+ was also used for the encapsulation of a series of polycyclic aromatic hydrocarbons (PAHs) and naphthalenetetracarboxylic diimide (NTCDI), to form complexes of formula [(NTCDI)2 (PAH)@1]4+ . For these host:guest adducts, the ESI IM-MS studies revealed that [1]4+ is expanded by 47-49 Å2 .. The energy-minimized structures of [1]4+ , [C60 @1]4+ , [C70 @1]4+ , [(NTCDI)2 (corannulene)@1]4+ in the gas phase were obtained by DFT calculations

Measurement and Theory of Gas-Phase Ion Mobility Shifts Resulting from Isotopomer Mass Distribution Changes

The unanticipated discovery of recent ultra-high-resolution ion mobility spectrometry (IMS) measurements revealing that isotopomers—compounds that differ only in the isotopic substitution sites—can be separated has raised questions as to the physical basis for their separation. A study comparing IMS separations for two isotopomer sets in conjunction with theory and simulations accounting for ion rotational effects provides the first-ever prediction of rotation-mediated shifts. The simulations produce observable mobility shifts due to differences in gas−ion collision frequency and translational-to-rotational energy transfer. These differences can be attributed to distinct changes in the moment of inertia and center of mass between isotopomers. The simulations are in broad agreement with the observed experiments and consistent with relative mobility differences between isotopomers. These results provide a basis for refining IMS theory and a new foundation to obtain additional structural insights through IMS

Steganography using cone insertion algorithm and mobile based stealth steganography

Title from first page of PDF file (viewed January 3, 2011)Includes bibliographical references (p. 40-41)To achieve secure communications, the cousins cryptography and steganography are used. The former scrambles secret messages in such way that only the intended recipient is capable of unscrambling them. The latter seeks to hide a secret message inside an innocuous message, audio, image, or video file (called the cover medium), in such a way that eavesdroppers will not suspect the very existence of the secret message. Combined, cryptography and steganography provide a secure form of communication: The former will encode the secret message in such a way that even if it intercepted, it is hard decrypt it; the latter will hide the encoded secret message. Images are the most popular cover medium used in steganography. Many different image file formats exist, most of them for specific applications. There are different steganographic algorithms for different image formats In this work, using the idea of splitting the cover image into several bit planes, I propose to hide secret messages in the intersection points of those planes with certain geometric objects. The resulting image containing the message is called stego-image. The latter should be such that a third party intercepting it will not have any indication that a secret message is present in the image. The geometric objects I have used are the cone and the hexagonal prism, and our technique has been implemented in both Matlab and Google Android

Predicting ion mobility as a function of the electric field for small ions in light gases

High resolution mobility devices such as Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS) and Differential Mobility spectrometers (DMS) use strong electric fields to gas concentration ratios, E/N, to separate ions in the gas phase. While extremely successful, their empirical results show a non-linear, ion-dependent relation between mobility K and E/N that is difficult to characterize. The one-temperature theory Mason-Schamp equation, which is the most widely used ion mobility equation, unfortunately, cannot capture this behavior. When the two-temperature theory is used, it can be shown that the K−E/N behavior can be followed quite closely numerically by equating the effect of increasing the field to an increase in the ion temperature. This is attempted here for small ions in a Helium gas environment showing good agreement over the whole field range. To improve the numerical characterization, the Lennard-Jones (L-J) potentials may be optimized. This is attempted for Carbon, Hydrogen, Oxygen and Nitrogen at different degrees of theory up to the fourth approximation, which is assumed to be exact. The optimization of L-J improves the accuracy yielding errors of about 3% on average. The fact that a constant set of L-J potentials work for the whole range of E/N and for several molecules, also suggests that inelastic collisions can be circumvented in calculations for He. The peculiar K−E/N hump behaviors are studied, and whether mobility increases or decreases with E/N is shown to derive from a competition between relative kinetic energy and the interaction potentials