scholarly journals Elastic Trapped Modes in Solid Acoustic Resonators of Various Shapes

2021 ◽  
Vol 2015 (1) ◽  
pp. 012032
Author(s):  
Ilya Deriy ◽  
Ivan Toftul ◽  
Mihail Petrov ◽  
Andrey Bogdanov
Keyword(s):  
Building Blocks ◽  
Microwave Devices ◽  
Q Factor ◽  
Trapped Modes ◽  
Acoustic Resonators ◽  
Main Building ◽  
Radiative Losses

Abstract Resonators are one of the main building blocks of many acoustic, photonic, and microwave devices such as metasurfaces, sensing devices, antennas, and many more. One of the main properties of any resonator, which also determines the properties of the structure, based on the resonator, is the quality (Q) factor. Q-factor of the resonator is limited due to material and radiative losses. In this paper, we propose the existence of modes of solid resonators, immersed in a nonviscious fluid, which are non-radiative, and therefore, their Q-factor is limited only by material losses.

SIMULATION AND ANALYSIS OF ASYMMETRIC METAMATERIAL RESONATOR-ASSISTED MICROWAVE SENSOR

2010 ◽  
Vol 24 (12) ◽  
pp. 1207-1215 ◽  
Author(s):  
JINGJING YANG ◽  
MING HUANG ◽  
ZHE XIAO ◽  
JINHUI PENG
Keyword(s):  
Topological Structure ◽  
Asymmetry Parameter ◽  
Field Enhancement ◽  
Q Factor ◽  
Trapped Modes ◽  
Design Requirement ◽  
High Q ◽  
Dielectric Sample ◽  
Microwave Sensor ◽  
Potential Applications

Based on the field enhancement principle of trapped modes, two new asymmetric metamaterial resonators are presented. Transmission response (S21) of the rectangular wave-guide filled with an asymmetric metamaterial resonator is simulated. Results show that the asymmetric resonator possesses high Q-factor and improved sensitivity. The microwave sensor based on the asymmetric resonator can be flexibly tailored to design requirement by varying the asymmetry parameter or the topological structure of the resonator. The asymmetric metamaterial resonator-assisted microwave sensor will have potential applications in biosensor and chemosensor fields for sensing minute amounts of dielectric sample substance.

scholarly journals The Lean Startup Framework: Closing the Academic–Practitioner Divide

2020 ◽  
pp. 104225871989941 ◽  
Author(s):  
Dean A. Shepherd ◽  
Marc Gruber
Keyword(s):  
Business Model ◽  
New Ventures ◽  
Building Blocks ◽  
Market Opportunity ◽  
Research Opportunities ◽  
Main Building ◽  
Research Findings ◽  
Startup Process ◽  
Customer Development ◽  
Lean Startup

The lean startup framework is one of the most popular contributions in the practitioner-oriented entrepreneurship literature. This study seeks to generate new insights into how new ventures are started by describing the five main building blocks of the lean startup framework (business model, validated learning/customer development, minimum viable product, perseverance vs. pivoting, market-opportunity navigation), enriching the framework with existing research findings, and proposing promising research opportunities in a way that reduces the academic−practitioner divide. In so doing, we hope to enhance researchers’ understanding of the startup process; provide knowledge for educators; and, ultimately, improve the startup process for practitioners.

scholarly journals TOWARDS A MORSE THEORY FOR RANDOM DYNAMICAL SYSTEMS

2004 ◽  
Vol 04 (03) ◽  
pp. 277-296 ◽  
Author(s):  
HANS CRAUEL ◽  
LUU HOANG DUC ◽  
STEFAN SIEGMUND
Keyword(s):  
Dynamical Systems ◽  
Morse Theory ◽  
Building Blocks ◽  
Random Dynamical Systems ◽  
Morse Decomposition ◽  
Main Building ◽  
Morse Sets

A generalization of the concepts of deterministic Morse theory to random dynamical systems is presented. Using the notions of attraction and repulsion in probability, the main building blocks of Morse theory such as attractor–repeller pairs, Morse sets, and the Morse decomposition are obtained for random dynamical systems.

Hairy cellulose nanocrystalloids: a novel class of nanocellulose

Nanoscale ◽  
2016 ◽  
Vol 8 (33) ◽  
pp. 15101-15114 ◽  
Author(s):  
Theo G. M. van de Ven ◽  
Amir Sheikhi
Keyword(s):  
Cellulose Nanofibrils ◽  
Building Blocks ◽  
Wood Fibers ◽  
Main Building ◽  
Chemically Treated ◽  
Modified Cellulose

Cellulose nanofibrils (left), the main building blocks of wood fibers, are chemically treated to fall apart from the amorphous regions and yield hairy nanocrystalline celluloses and modified cellulose biopolymers (right).

scholarly journals Uncovering value creation in innovation ecosystems: paths towards shared value

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Marika Arena ◽  
Giovanni Azzone ◽  
Giulia Piantoni
Keyword(s):  
Conceptual Model ◽  
Value Creation ◽  
Design Methodology ◽  
Building Blocks ◽  
Shared Value ◽  
Content Type ◽  
Main Building ◽  
Innovation Ecosystems ◽  
Creating Shared Value ◽  
Key Characteristics

PurposeAlthough innovation ecosystems (IEs) are generally considered capable of creating shared value (SV), this potentiality has often been taken for granted and not deeply analysed, yet. As a result, in the literature, there is not a framework that defines the process of SV creation in IEs or which aspects should be considered for understanding it. Moving from these considerations, this paper aims to propose a conceptual model of how IEs can create SV, identifying the main building blocks of the process and the aspects that characterize these building blocks.Design/methodology/approachThe authors reviewed the literature on IEs and value creation over the last 15 years, by structurally analysing 120 articles. On the basis of such review, the authors identified main dimensions of analysis focusing on the conceptualization of SV in IEs.FindingsFirst, the authors developed a conceptual model relying on a process-based logic and framing the SV creation in terms of inputs, here intended as four key characteristics (actors, structure, governance and relations), internal processes (strategies and internal mechanisms) and outputs (the value created). Second, each element of value creation is explored, highlighting the main evidence emerging from prior studies in connection to each block.Originality/valueThis paper drives the identification of some relevant relationships that connect the characteristics of the IEs, the strategies and the internal mechanisms to the output of the process, i.e. the SV created.

scholarly journals Pilot Target Supply System Based on the FST Technologies: Main Building Blocks, Layout Algorithms and Results of the Testing Experiments

2013 ◽  
Vol 8 (0) ◽  
pp. 3404052-3404052 ◽  
Author(s):  
Irina V. ALEKSANDROVA ◽  
Elena R. KORESHEVA ◽  
Eugeniy L. KOSHELEV ◽  
Igor E. OSIPOV
Keyword(s):  
Building Blocks ◽  
Supply System ◽  
Main Building

Composing Collaborationist Collages about Commercial Security

2020 ◽  
Vol 1 (1) ◽  
pp. 61-97
Author(s):  
Anna Leander
Keyword(s):  
Building Blocks ◽  
Academic Work ◽  
Research Strategy ◽  
New Materialism ◽  
Analytical Strategy ◽  
Main Building ◽  
War Games ◽  
Martha Rosler ◽  
Feminist New Materialism

This article is an argument about why it is worth taking the trouble to work with feminist, new materialist approaches inspired by Haraway, Mol, Stengers and others, when studying IR questions. It introduces and exemplifies one specific analytical strategy for doing so, namely one of “composing collaborationist collages”, focusing first on the main building blocks of the approach and then on the (dis-)advantages of working with it. In terms of the building blocks, I underline that composing makes it possible to join the heterogeneous and unlikely, that collaging accentuates the scope for playing with heterogeneity and that collaborating is a necessary part of this process as a well as a helpful check on one’s positionality. I then proceed by focusing on the (dis-)advantages of composing collaborationist collages, making the arguments that this research strategy directs attention to (dis-)connections and to the temporal politics of emergence. It also requires a willingness to face the uncertainties associated with creative academic work. The article introduces composing collaborationist collages as a research strategy. It does so working with material from feminist new materialism, practice theories, the exhibition War Games featuring installations by Hito Steyerl and Martha Rosler and my own work on the politics of commercial security.

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