220 research outputs found
sj-docx-3-cpc-10.1177_10556656231225573 - Supplemental material for Management of Velopharyngeal Dysfunction (VPD) Following Cleft Palate Repair: A Comprehensive Decision-Making Process Based on Severity and Structural Deficiencies
No full textSupplemental material, sj-docx-3-cpc-10.1177_10556656231225573 for Management of Velopharyngeal Dysfunction (VPD) Following Cleft Palate Repair: A Comprehensive Decision-Making Process Based on Severity and Structural Deficiencies by Syed Altaf Hussain, Charanya Vijayakumar, Subramaniyan Balasubramanian, Sara Rahavi-Ezabadi, Vishnu Sundar, Deborah Sybil and Zaid Hussain in The Cleft Palate Craniofacial Journal</p
sj-docx-1-cpc-10.1177_10556656231225573 - Supplemental material for Management of Velopharyngeal Dysfunction (VPD) Following Cleft Palate Repair: A Comprehensive Decision-Making Process Based on Severity and Structural Deficiencies
No full textSupplemental material, sj-docx-1-cpc-10.1177_10556656231225573 for Management of Velopharyngeal Dysfunction (VPD) Following Cleft Palate Repair: A Comprehensive Decision-Making Process Based on Severity and Structural Deficiencies by Syed Altaf Hussain, Charanya Vijayakumar, Subramaniyan Balasubramanian, Sara Rahavi-Ezabadi, Vishnu Sundar, Deborah Sybil and Zaid Hussain in The Cleft Palate Craniofacial Journal</p
sj-docx-2-cpc-10.1177_10556656231225573 - Supplemental material for Management of Velopharyngeal Dysfunction (VPD) Following Cleft Palate Repair: A Comprehensive Decision-Making Process Based on Severity and Structural Deficiencies
No full textSupplemental material, sj-docx-2-cpc-10.1177_10556656231225573 for Management of Velopharyngeal Dysfunction (VPD) Following Cleft Palate Repair: A Comprehensive Decision-Making Process Based on Severity and Structural Deficiencies by Syed Altaf Hussain, Charanya Vijayakumar, Subramaniyan Balasubramanian, Sara Rahavi-Ezabadi, Vishnu Sundar, Deborah Sybil and Zaid Hussain in The Cleft Palate Craniofacial Journal</p
Effects of Temperature and Light on Aerial Breathing of the Longnose Gar, Lepisosteus Osseus
No full textAuthor Institution: Department of Zoology, University of OklahomaSAKSENA, VISHNU P. Effects of temperature and Light on Aerial Breathing of the Longnose Gar, Lepisosteus osseus. Ohio J. Sci. 72(1): 58, 1975
An Analysis of Symphony No. 19 ( Vishnu ) by Alan Hovhaness, and Kshetrajna , an Original Composition for Orchestra.
No full textThis dissertation consists of two parts, both of which share a common link through their inspiration from Hinduism. Part I is an analysis of Hovhaness\u27s Symphony No. 19 (Vishnu). Part II is an original composition in three movements for orchestra entitled Kshetrajna. Hovhaness\u27s Symphony No. 19 (Vishnu), composed between July and August, 1966, in Luzern, Switzerland, is a single movement work of tripartite structure, for symphony orchestra. The title, Vishnu, refers to the second person of the Hindu trinity, whose name is a remarkable metaphor for the explosive energies and sustaining forces of the universe. The work is impressionistic in a sense; Hovhaness achieves a great wealth of atmospheric effects, highly suggestive of cosmic space and events (viz., exploding galaxies, vast emptiness and timelessness). Hovhaness is very much a mystic, and this one quality is poignantly manifested in Vishnu through the many Eastern and mesmeric devices employed in the work. In the following analysis the various parameters of form, tonality and modality, senza misura practices, melody and vertical sonority found in Hovhaness\u27s 19th symphony are described in depth. The second part of the dissertation, Kshetrajna, is an original orchestral composition in three movements by the author. The title, Kshetrajna, is a Sanskrit term meaning knower of the field. The work draws its inspiration from the thirteenth chapter of the Bhagavad Gita in which Krishna relates to Arjuna knowledge about the field (physical manifestation in its totality) and its knower (the conscious ego). Two basic motives are thus interwoven through the course of the work, and manipulated in diverse ways. The three movements generally adhere to the scheme, fast-slow-fast, respectively. The movements are essentially through-composed, and follow no traditional formal outlines
DRM : Technological Measure for Digital Contents on the Silicon Plaform
No full textElectronic Information is the logical extension of the development in technology and the response to the growing need of the users for easy access to information. Rights holders can also gain better access to large amounts of rights data online. Managing electronic information needs tools for Electronic Information Management (EIM). EIM means using office technology systematically to help one store, retrieve, and safeguard his organization’s information. When we think of reducing paper, we rely more and more on technology to create digital information - software files, digital photographs, and Email which gives EIM a broader scope. With current technology it’s possible to manage a complete “library” of information with centralized security, backups and control, different levels of retrieval and access, and archival storage. Digital Right Management offers a better way to manage the records we rely on. Whether documents are stored in an original electronic file format or scanned from paper, managing their storage, access and retention becomes easier with EIM technology
Quality Practices & Service Innovation as Strategies for Addressing Challenges of Circular and non-Circular Start-ups : A Comparative Study
No full textStartups play a pivotal role in driving innovation and sustainability, yet they face significant challenges. This research investigates the challenges faced by circular startups and non-circular startups in Sweden during business model development, with a focus on how quality practices and service innovation strategies can be used to address these challenges. While previous studies have primarily focused on challenges faced by CSUs, they have given limited attention to how these challenges are addressed, especially in comparison to non-CSUs. For this research , the author used a qualitativeresearch approach, data was collected mainly through semi-structured interviews with six startups and supported with secondary sources. Key findings highlight that CSUs often face unique challenges such as securing initial funding, aligning regulatory requirements, and achieving market acceptance for their circular offering. In contrast, non-CSUs encounter challenges primarily related to unique innovation. While exploring quality practices and service innovations used by each startup, I highlighted how they differ. By providing actionable insights, this study contributes to broader discourse on sustainable business development and offers recommendations for startups to enhance operational resilience, customer satisfaction, and market adaptability
Quality Practices & Service Innovation as Strategies for Addressing Challenges of Circular and non-Circular Start-ups : A Comparative Study
No full textStartups play a pivotal role in driving innovation and sustainability, yet they face significant challenges. This research investigates the challenges faced by circular startups and non-circular startups in Sweden during business model development, with a focus on how quality practices and service innovation strategies can be used to address these challenges. While previous studies have primarily focused on challenges faced by CSUs, they have given limited attention to how these challenges are addressed, especially in comparison to non-CSUs. For this research , the author used a qualitativeresearch approach, data was collected mainly through semi-structured interviews with six startups and supported with secondary sources. Key findings highlight that CSUs often face unique challenges such as securing initial funding, aligning regulatory requirements, and achieving market acceptance for their circular offering. In contrast, non-CSUs encounter challenges primarily related to unique innovation. While exploring quality practices and service innovations used by each startup, I highlighted how they differ. By providing actionable insights, this study contributes to broader discourse on sustainable business development and offers recommendations for startups to enhance operational resilience, customer satisfaction, and market adaptability
Understanding the evolution of hydrogen supply chains in the western United States: An optimization-based approach focusing on California as a future hydrogen hub.
No full textInterest in hydrogen as a clean source of energy has grown considerably over the past decade. With its ambitious climate goals and a vibrant economy, California looks poised to become one of the major hydrogen hubs in the country. However, insufficient infrastructure to support demand and lack of economies of scale, are critical factors that have impeded the uptake of hydrogen in California. Infrastructure requirements span across the supply chain including production, delivery, and distribution. Strong early investments are required, with a clear vision of where and when the future hydrogen system buildout will happen. The first chapter in my dissertation employs a suite of hydrogen supply chain (HSC) models developed by the US Department of Energy (DOE), to explore technology feasibilities (particularly for California) and identify factors that are most critical for achieving the lowest levelized costs of hydrogen across the supply chain. I find that feedstock prices, size of the hydrogen market and infrastructure utilization are the prominent parameters that affect the levelized costs of hydrogen.These factors would evolve over time and space. Choosing a cost optimal technology in every section of the HSC after considering these factors is a complex optimization problem. I worked with researchers at the National Renewable Energy Laboratory (NREL) and Institute of Transportation studies (ITS, UC Davis) to upgrade NREL’s Scenario Evaluation and Regionalization Analysis Model (SERA), a hydrogen infrastructure optimization model. I then employ SERA to understand how demand uncertainties, sector coupling (between the HSC and electricity grid) and renewable hydrogen policies could impact the buildout of hydrogen infrastructures in the western United States, primarily to meet California’s projected hydrogen demands from 2025-2050.
We find that falling electricity prices and electrolyzer capital expenditures encourage investments in renewable hydrogen production (grid connected electrolysis) across the Western states, more so outside California. Consequently, a complete reliance on the electricity grid for hydrogen supply can be expensive for California, as there needs to be a more elaborate build out of delivery infrastructure. If California’s electricity grid rates continue to be higher (as compared to neighboring states), its regional hydrogen imports could range between 30-75% of its demand by 2050. With more favorable rate structures for grid-connected electrolyzers in California, some of those regional imports could be offset. Investments in blue hydrogen (fossil derived with carbon capture and sequestration) in California could continue well beyond 2030, but some of it could be disincentivized with additional renewable hydrogen mandates.
Evolution of the hydrogen delivery network is found to be driven by the rate of demand growth and its spatial distribution. For meeting road transportation demands, which is very distributed and growing only incrementally, hydrogen delivery using trucks seems to be cost-effective in most scenarios. Within trucking, liquid trucks present a better opportunity while demand scales up. But with large, concentrated demand (like in hubs), pipelines are the preferred option for hydrogen delivery. Generally, investments in building dedicated hydrogen pipelines require high degrees of demand certainty, which could be spurred by farsighted policy incentives. Line packing of hydrogen pipelines could be a valuable hydrogen storage proposition for California, which does not have access to some of the cheap underground bulk storage options (like salt caverns) within state. I demonstrate that long-term investment planning (like for 25 years) reduces system costs in all scenarios and is a critical piece in driving down the costs of hydrogen usage.
Given that the hydrogen ecosystem is still very nascent, much of the investment decisions will be policy driven, not only regional policy but global. In the last chapter of my dissertation, I review the status of hydrogen policies globally. I identify major economies like Japan, South Korea, Germany, and California as early adopters with specific policies that have encouraged hydrogen across different sectors, but with varying levels of adoption. Hydrogen is identified as a potent decarbonization vector by all these jurisdictions and there are substantial opportunities for collaborations that could help scale up a global hydrogen economy
Films minces de polythiophènes orientés et conducteurs pour applications en thermoélectricité
No full textThe aim of this thesis is to develop new polymeric thermoelectric (TE) materials based on oriented polythiophene (PBTTT) films. High-temperature rubbing produces oriented films of controlled orientation and crystallinity. Various doping methods with suitable dopants (F4TCNQ, F6TCNNQ and FeCl3) produced enhanced TE properties along the rubbing direction. A combination of polarized UV-Vis-NIR spectroscopy and TEM uncovered the amount and orientation of dopants intercalated in the crystals of PBTTT. The diffusion coefficient of dopants is correlated to the length of alkyl side chains : PBTTT with C12 side chains shows the best TE properties because of a fast and effective diffusion of dopants in the polymer films. Finally, we evaluated the impact of dopant (geometry, electronegativity) on the TE properties. Doping oriented PBTTT with FeCl3 helped reach record electrical conductivity of 2×105 S/cm and TE power factors of 1 mW/mK2.Cette thèse concerne la fabrication de matériaux thermoélectriques (TE) à base de films minces orientés de polythiophènes (PBTTT). Le brossage à haute température produit des films minces de cristallinité et d’orientation contrôlées. Différentes méthodes de dopage avec des dopants tels F4TCNQ, F6TCNNQ et FeCl3 ont permis de fabriquer des films polymère conducteurs orientés aux propriétés TE anisotropes. Une combinaison de spectroscopie UV-vis-NIR polarisée et de MET donne accès à l’orientation et à la quantité de dopants intercalés dans les cristaux polymère. Le coefficient de diffusion du dopant est corrélé à la longueur des chaînes alkyls des polymères : les PBTTTs ayant des chaînes alkyls en C12 présentent les meilleurs propriétés TE en raison d’une diffusion rapide et efficace des dopants dans le polymère. Finalement, nous avons étudié l’effet du type de dopant (son électronégativité, sa taille) sur les propriétés TE des films. Le dopage de films orientés de C12-PBTTT avec FeCl3 permet d’atteindre des valeurs records de conductivité de 2.105 S/cm et des facteurs de puissance de l’ordre de 1 mW/mK2
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