scholarly journals Nanoobject mass measurement using the node displacement of the second mode of the nanomechanical resonator

2021 ◽  
Vol 2086 (1) ◽  
pp. 012026
Author(s):  
N A Solomonov ◽  
K N Novikova ◽  
I V Nadoyan ◽  
A M Mozharov ◽  
V A Shkoldin ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Vibration Mode ◽  
Mass Measurement ◽  
Traditional Approach ◽  
Shift Measurement ◽  
Suggested Approach ◽  
Nanomechanical Resonator ◽  
New Approach ◽  
Second Mode ◽  
Node Displacement

Abstract This work suggests a new approach to weighting the nanoscale objects placed at the tip of cantilever vibrating inside the camera of scanning electron microscope. In contrast to traditional approach to mass determination, we suggest tracing the shift of the node of the second vibration mode as an alternative to frequency shift measurement. We demonstrate the applicability of our approach to carbon nanowhisker cantilevers grown on tungsten needles by focused electron beam induced deposition. We compare experimentally the performance of the suggested approach with the traditional frequency shift-based method.

A New Pattern of Old Fabric: Taʻlīm-i fārisī and the Grammatical Description of the Persian Language in the Ottoman Empire

2021 ◽  
Vol 27 (41) ◽  
pp. 31-48
Author(s):  
Munir Drkić ◽  
Ahmed Zildžić
Keyword(s):  
Ottoman Empire ◽  
19Th Century ◽  
Paradigm Shift ◽  
Traditional Approach ◽  
New Approach ◽  
Persian Language ◽  
European Languages ◽  
Language Students ◽  
The 19Th Century

This paper aims to examine the work entitled Taʻlīm-i fārisī in the context of the Ottoman tradition of the grammatical study of the Persian language. Taʻlīm-i fārisī, most likely penned by Kemal-pasha, is a short yet exceedingly significant primer for Persian language students dated in the middle of the 19th century. After a brief overview of the Persian grammar studies in the Ottoman Empire, the authors present the work and its author and conduct an analysis of the content of Taʻlīm-i fārisī. In terms of its underlying methodology, this work stands halfway between two principal tendencies: one is the traditional approach to studying the Persian language in the Ottoman Empire; another is a new approach developed under the influence of grammatical description of European languages. This paradigm shift in the Persian language's grammatical description within the Ottoman Empire is readily observable in the primer under review.

scholarly journals Aggregator of Demand Response for Renewable Integration and Customer Engagement: Strengths, Weaknesses, Opportunities, and Threats

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2391 ◽  
Author(s):  
Kody Ponds ◽  
Ali Arefi ◽  
Ali Sayigh ◽  
Gerard Ledwich
Keyword(s):  
Demand Response ◽  
Electricity Market ◽  
Swot Analysis ◽  
Traditional Approach ◽  
Customer Engagement ◽  
Energy Integration ◽  
New Approach ◽  
Advantages And Disadvantages ◽  
Knowledge Based ◽  
Political Economic

The world is progressing towards a more advanced society where end-consumers have access to local renewable-based generation and advanced forms of information and technology. Hence, it is in a current state of transition between the traditional approach to power generation and distribution, where end-consumers of electricity have typically been inactive in their involvement with energy markets and a new approach that integrates their active participation. This new approach includes the use of distributed energy resources (DER) such as renewable-based generation and demand response (DR), which are being rapidly adopted by end-consumers where incentives are strong. This paper presents the role of the DR aggregator to effectively integrate DER technology as a new source of energy capacity into electricity networks using information communication technology and industry knowledge., Based on DR aggregators, this framework will efficiently facilitate renewable energy integration and customer engagement into the electricity market. To this aim, advantages and disadvantages of DR aggregators are discussed in this paper from political, economic, social, and technological (PEST) points of view. Based on this analysis, a strengths, weaknesses, opportunities, and threats (SWOT) analysis for a typical DR aggregator is presented.

Application of QR Method for Analysis of Spatial-Mega Frame Structure

2011 ◽  
Vol 243-249 ◽  
pp. 6049-6052
Author(s):  
Wen Jun Pan ◽  
Xian Guo Ye ◽  
Lei Chang
Keyword(s):  
Finite Element ◽  
Variational Principle ◽  
Reliable Method ◽  
Frame Structure ◽  
New Approach ◽  
Nodal Displacement ◽  
Simplified Calculation ◽  
Node Displacement

With the generalized displacement parameters of spline knots chosen as basic unknowns, the node displacement functions of spatial mega frames were built up, then element node displacements could be expressed by these parameters. New stiffness equation of spatial mega frame was deduced according to energy variational principle. The nodal displacement and nodal forces were worked out by the displacement parameters of spline knots. Process of block assembling for spline-discretization matrix was introduced briefly. One spatial mega frame was calculated by QR method and different finite element softwares. Comparation among the results and those of references proves that QR method is exactly an economical, effective and reliable method for computation of spatial mega frames. It provides a new approach for simplified calculation to spatial mega structures, so has good theoretical and practical value.

scholarly journals A new approach to understanding teachers’ classroom practices

2014 ◽  
Vol 7 ◽  
Author(s):  
Lyla Alsalim
Keyword(s):  
Education Reform ◽  
Teaching And Learning ◽  
Classroom Practices ◽  
Teacher Practices ◽  
Traditional Approach ◽  
Reform Initiatives ◽  
New Approach ◽  
Teachers Beliefs ◽  
Recent Reform

Teaching is generally considered a complex practice that involves the constant and dynamic interaction between the teacher, the students and the subject matter. One of the main goals of most education reform initiatives has been to change teachers’ classroom practices. Most recent reform curricula focus on highlighting teacher practices that promote and evoke students’ understanding alongside the changes in content (Tirosh & Graeber, 2003). Changes to a teacher’s role that are included in the education reform movement call for more research in order to understand and theorise teachers’ classroom practices. In this paper, I will present patterns-of-participation (PoP) as a promising framework that aims to understand the role of the teacher for emerging classroom practices. Instead of relying on a traditional approach to understanding classroom practices by analysing teachers’ beliefs, this framework applies a participatory approach to look for patterns in the participation of individual teachers in many social practices at the school and in the classroom. Some of these practices are directly related to the teaching and learning of mathematics while others are not. And some of them relate to communities that are not actually present in the classroom or at the school. PoP views teachers’ social interaction in a certain community as a piece which is influenced by other pieces of social interactions. In every interaction, the ‘pieces’ shape a ‘fluctuating pattern' that shows the shifting impact of different, previous practices and the dynamic relations between them (Skott, 2010; 2011; 2013).

scholarly journals Characterization of laser Doppler vibrometers using acousto-optic modulators

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 361
Author(s):  
Michael Gaitan ◽  
Jon Geist ◽  
Benjamin J. Reschovsky ◽  
Ako Chijioke
Keyword(s):  
Frequency Shift ◽  
Excitation Frequency ◽  
Laser Doppler Vibrometer ◽  
Laser Doppler ◽  
New Approach ◽  
Frequency Reference ◽  
Discrete Velocity ◽  
Velocity Shift ◽  
Vibration Excitation

We report on a new approach to characterize the performance of a laser Doppler vibrometer (LDV). The method uses two acousto-optic modulators (AOMs) to frequency shift the light from an LDV by a known quantity to create a synthetic velocity shift that is traceable to a frequency reference. Results are presented for discrete velocity shifts and for sinusoidal velocity shifts that would be equivalent to what would be observed in an ideal accelerometer vibration calibration. The method also enables the user to sweep the synthetic vibration excitation frequency to characterize the bandwidth of an LDV together with its associated electronics.

A New Pattern of Old Fabric: Taʻlīm-i fārisī and the Grammatical Description of the Persian Language in the Ottoman Empire

2021 ◽  
Vol 27 (41) ◽  
pp. 31-48
Author(s):  
Munir Drkić ◽  
Ahmed Zildžić
Keyword(s):  
Ottoman Empire ◽  
19Th Century ◽  
Paradigm Shift ◽  
Traditional Approach ◽  
New Approach ◽  
Persian Language ◽  
European Languages ◽  
Language Students ◽  
The 19Th Century

This paper aims to examine the work entitled Taʻlīm-i fārisī in the context of the Ottoman tradition of the grammatical study of the Persian language. Taʻlīm-i fārisī, most likely penned by Kemal-pasha, is a short yet exceedingly significant primer for Persian language students dated in the middle of the 19th century. After a brief overview of the Persian grammar studies in the Ottoman Empire, the authors present the work and its author and conduct an analysis of the content of Taʻlīm-i fārisī. In terms of its underlying methodology, this work stands halfway between two principal tendencies: one is the traditional approach to studying the Persian language in the Ottoman Empire; another is a new approach developed under the influence of grammatical description of European languages. This paradigm shift in the Persian language's grammatical description within the Ottoman Empire is readily observable in the primer under review.

On the Exact Representation of the Boundary Surfaces of the Swept Volume of a Cylinder Undergoing Rational Bézier and B-Spline Motions

1999 ◽  
Author(s):  
J. Xia ◽  
Q. J. Ge
Keyword(s):  
Tool Path ◽  
Traditional Approach ◽  
Object Motion ◽  
Exact Representation ◽  
Tool Path Planning ◽  
New Approach ◽  
B Spline ◽  
Volume Analysis ◽  
Swept Volume ◽  
Boundary Surfaces

Abstract This paper develops methods for the exact analysis and representation of the swept volume of a circular cylinder undergoing rational Bézier and B-spline motions. Instead of following the traditional approach of analyzing the point trajectory of an object motion for swept volume analysis, this paper seeks to develop a new approach to swept volume analysis by studying the plane trajectory of a rational motion. It seeks to bring together recent work in swept volume analysis, plane representation of developable surfaces, as well as computer aided synthesis of freeform rational motions. The results have applications in design and approximation of freeforms surfaces as well as tool path planning for 5-axis machining of freeform surfaces.

scholarly journals “GENIT” AS EFFECTIVE DESIGN OF LEARNING MEDIA

2018 ◽  
Vol 42 ◽  
pp. 00043
Author(s):  
Mardiki Supriadi
Keyword(s):  
Traditional Approach ◽  
Educational Communication ◽  
Higher Learning ◽  
Educational Goals ◽  
New Approach ◽  
Learning Content ◽  
Teaching Content ◽  
Media And Technology ◽  
The Impact ◽  
Positive Effect

There are two main approaches to using media in schools: students can learn "from" Media and technology, and they can learn "with" media and technology. The basis for The use of media and technology as a "tutor" in schools is "educational communication," that is the deliberate act of communicating content (teaching content) for students by assuming that they will learn something "from" this communication, so communication is not again free but controlled and conditioned for educational purposes. Findings on the impact of technologybased instruction in education can be concluded that technology as a tutor has a positive effect on learning, one of them is the student can complete a set of educational goals in less time than necessary in a traditional approach. However, these two approaches only make the task become easier but do not activate and facilitate them to think critical and higher learning. “Media Genit” uses a new approach as an approach that can optimize perspective-based cognitive processes, constructivism, which constitutes an environment in which the student as a designer thinks creative about content combined with real-world tasks, student learning content, enjoy the learning process, and recognize that they have created something that is valuable.

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