The novel design concept for the tensioning system of an inflatable planar membrane reflector

In this paper, the concept of scalability for actuators is introduced and explored, which is the capability to freely change the output characteristics on demand: displacement and force for a linear actuator, angular position and torque for a rotational actuator. This change can either be used to obtain power improvement (with a constant scale factor), or to improve the usability of a robotic system according to variable conditions (with a variable scale factor). Some advantages of a scalable design include the ability to adapt to changing environments, variable resolution of step size, ability to produce designs that are adequate for restricted spaces or that require strict energy efficiency, and intrinsically safe systems. Current approaches for scalability in actuators have shortcomings: the method to achieve scalability is complex, so obtaining a variable scaling factor is challenging, or they cannot scale both output characteristics simultaneously. Shape Memory Alloy (SMA) wire-based actuators can overcome these limitations, because its two output characteristics, displacement and force, are physically independent from each other. In this paper we present a novel design concept for linear scalable actuators that overcome SMA design and scalability limitations by using a variable number of SMA wires mechanically in parallel, immersed in a liquid that transmits heat from a separate heat source (wet activation). In this concept, more wires increase the maximum attainable force, and longer wires increase the maximum displacement. Prototypes with different number of SMA wires were constructed and tested in isometric experiments to determine force vs. temperature behavior and time response. The heat-transmitting liquid was either static or flowing using pumps. Scalability was achieved with a simple method in all tested prototypes with a linear correlation of maximum force to number of SMA wires. Flowing heat transmission achieved higher actuation bandwidth.

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Novel Design Concept for Microstrip Dual Band Bandpass Filter by Using Patch Loaded Resonator and Short-Circuited Stub

2020 IEEE Asia-Pacific Microwave Conference (APMC) ◽

10.1109/apmc47863.2020.9331683 ◽

2020 ◽

Author(s):

Ceyhun Karpuz ◽

Gulfem Balasu Firat Unuk ◽

Pinar Ozturk Ozdemir

Keyword(s):

Bandpass Filter ◽

Design Concept ◽

Dual Band ◽

Novel Design

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Calculation and Measurement of the Stiffness and Damping Coefficients for a Low Impedance Hydrodynamic Bearing

Journal of Tribology ◽

10.1115/1.2832480 ◽

1997 ◽

Vol 119 (1) ◽

pp. 57-63 ◽

Cited By ~ 4

Author(s):

M. J. Goodwin ◽

P. J. Ogrodnik ◽

M. P. Roach ◽

Y. Fang

Keyword(s):

Experimental Data ◽

Dynamic Stiffness ◽

Perturbation Technique ◽

The Novel ◽

Oil Film ◽

Hydrodynamic Bearing ◽

Damping Coefficients ◽

Stiffness And Damping ◽

Film Stiffness ◽

Novel Design

This paper describes a combined theoretical and experimental investigation of the eight oil film stiffness and damping coefficients for a novel low impedance hydrodynamic bearing. The novel design incorporates a recess in the bearing surface which is connected to a standard commercial gas bag accumulator; this arrangement reduces the oil film dynamic stiffness and leads to improved machine response and stability. A finite difference method was used to solve Reynolds equation and yield the pressure distribution in the bearing oil film. Integration of the pressure profile then enabled the fluid film forces to be evaluated. A perturbation technique was used to determine the dynamic pressure components, and hence to determine the eight oil film stiffness and damping coefficients. Experimental data was obtained from a laboratory test rig in which a test bearing, floating on a rotating shaft, was excited by a multi-frequency force signal. Measurements of the resulting relative movement between bearing and journal enabled the oil film coefficients to be measured. The results of the work show good agreement between theoretical and experimental data, and indicate that the oil film impedance of the novel design is considerably lower than that of a conventional bearing.

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A novel flexible tool with rotary ultrasonic spindle for fine grinding of tungsten carbide

MATEC Web of Conferences ◽

10.1051/matecconf/201818500018 ◽

2018 ◽

Vol 185 ◽

pp. 00018

Author(s):

Albert Wen-Jeng Hsue ◽

Yi-Zhong Zheng

Keyword(s):

Tungsten Carbide ◽

The Novel ◽

Machining Processes ◽

Flexible Tool ◽

Operational Conditions ◽

Cnc Grinding ◽

Grinding Conditions ◽

Novel Design ◽

Conventional Machining ◽

Tungsten Steel

Tungsten carbide is a typical difficult-to-cut material by conventional machining processes. In this paper, a novel design of flexible abrasives tool combined with a rotary ultrasonic machining (RUM) spindle is conducted to reduce the labor force significantly. The newly designed flexibility of tool-tip is aimed at preventing overcutting from the CNC grinding. The grinding conditions with resulted surface morphology of the tungsten steel were investigated through Taguchi design of experiment and ANOVA analysis. The machining capability of the novel flexible tool is compared with conventional tools through specific grinding paths under proper operational conditions.

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Why Do So Few Consumers Use Health Care Quality Report Cards? A Framework for Understanding the Limited Consumer Impact of Comparative Quality Information

Medical Care Research and Review ◽

10.1177/1077558718774945 ◽

2018 ◽

Vol 76 (5) ◽

pp. 515-537 ◽

Cited By ~ 2

Author(s):

Neeraj Bhandari ◽

Dennis P. Scanlon ◽

Yunfeng Shi ◽

Rachel A. Smith

Keyword(s):

Health Care Quality ◽

Care Quality ◽

Report Cards ◽

Quality Information ◽

The Novel ◽

Cognitive Limitations ◽

Provider Quality ◽

The Media ◽

New Generation ◽

Novel Design

Despite growing investment in producing and releasing comparative provider quality information (CQI), consumer use of CQI has remained poor. We offer a framework to interpret and synthesize the existing literature’s diverse approaches to explaining the CQI’s low appeal for consumers. Our framework cautions CQI stakeholders against forming unrealistic expectations of pervasive consumer use and suggests that they focus their efforts more narrowly on consumers who may find CQI more salient for choosing providers. We review the consumer impact of stakeholder efforts to apply the burgeoning knowledge of consumers’ cognitive limitations to the design and dissemination of the new generation of report cards; we conclude that while it is too limited to draw firm conclusions, early evidence suggests consumers are responding to the novel design and dissemination strategies. We find that consumers continue to have difficulty accessing reliable report cards, while the media remains underused in the dissemination of report cards.

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Translucent Answer Predictions in Multi-Hop Reading Comprehension

Proceedings of the AAAI Conference on Artificial Intelligence ◽

10.1609/aaai.v34i05.6272 ◽

2020 ◽

Vol 34 (05) ◽

pp. 7700-7707

Author(s):

G P Shrivatsa Bhargav ◽

Michael Glass ◽

Dinesh Garg ◽

Shirish Shevade ◽

Saswati Dana ◽

...

Keyword(s):

Reading Comprehension ◽

Question Answering ◽

State Of The Art ◽

Local Context ◽

The Novel ◽

Loose Coupling ◽

Loosely Coupled ◽

Neural Architecture ◽

Coupled Networks ◽

Novel Design

Research on the task of Reading Comprehension style Question Answering (RCQA) has gained momentum in recent years due to the emergence of human annotated datasets and associated leaderboards, for example CoQA, HotpotQA, SQuAD, TriviaQA, etc. While state-of-the-art has advanced considerably, there is still ample opportunity to advance it further on some important variants of the RCQA task. In this paper, we propose a novel deep neural architecture, called TAP (Translucent Answer Prediction), to identify answers and evidence (in the form of supporting facts) in an RCQA task requiring multi-hop reasoning. TAP comprises two loosely coupled networks – Local and Global Interaction eXtractor (LoGIX) and Answer Predictor (AP). LoGIX predicts supporting facts, whereas AP consumes these predicted supporting facts to predict the answer span. The novel design of LoGIX is inspired by two key design desiderata – local context and global interaction– that we identified by analyzing examples of multi-hop RCQA task. The loose coupling between LoGIX and the AP reveals the set of sentences used by the AP in predicting an answer. Therefore, answer predictions of TAP can be interpreted in a translucent manner. TAP offers state-of-the-art performance on the HotpotQA (Yang et al. 2018) dataset – an apt dataset for multi-hop RCQA task – as it occupies Rank-1 on its leaderboard (https://hotpotqa.github.io/) at the time of submission.

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An Enhanced FPGA Based Asynchronous Microprocessor Design Using VIVADO and ISIM

Bulletin of Electrical Engineering and Informatics ◽

10.11591/eei.v7i2.818 ◽

2018 ◽

Vol 7 (2) ◽

pp. 199-208

Author(s):

Archana Rani ◽

Naresh Grover

Keyword(s):

The Novel ◽

Design And Implementation ◽

Microprocessor Design ◽

Novel Design

This paper deals with the novel design and implementation of asynchronous microprocessor by using HDL on Vivado tool wherein it has the capability of handling even I-Type, R-Type and Jump instructions with multiplier instruction packet. Moreover, it uses separate memory for instructions and data read-write that can be changed at any time. The complete design has been synthesized and simulated using Vivado. The complete design is targeted on Xilinx Virtex-7 FPGA. This paper more focuses on the use of Vivado Tool for advanced FPGA device. By using Vivado we get enhaced analysis result for better view of properly Route Placed design.

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A Robotized Needle Insertion Device for Percutaneous Procedures

Volume 7: 29th Mechanisms and Robotics Conference, Parts A and B ◽

10.1115/detc2005-84577 ◽

2005 ◽

Cited By ~ 1

Author(s):

Olivier Piccin ◽

Pierre Renaud ◽

Laurent Barbe´ ◽

Bernard Bayle ◽

Benjamin Maurin ◽

...

Keyword(s):

Ct Scan ◽

Medical Application ◽

Needle Insertion ◽

Computer Assisted ◽

The Novel ◽

Percutaneous Therapy ◽

Percutaneous Procedures ◽

Insertion Device ◽

Haptic Control ◽

Novel Design

In this paper, a new robotized needle insertion device is proposed for computer-assisted percutaneous therapy. The insertion device is integrated in a robotic system dedicated to gesture guidance in a Computed Tomography (CT) scan. The presented design fulfills the stringent requirements of such a medical application: compatibility with a CT-scan and haptic control by the practitioner are ensured as well as safety and sterilization. The novel design of the insertion device is first presented, outlining its main properties, before introducing preliminary experimental results.

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A Multifunctional Microfluidic Device Based on Bifurcation Geometry

ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B ◽

10.1115/fedsm-icnmm2010-30950 ◽

2010 ◽

Author(s):

Ahmed Fadl ◽

Stefanie Demming ◽

Zongqin Zhang ◽

Bjo¨rn Hoxhold ◽

Stephanus Bu¨ttgenbach ◽

...

Keyword(s):

Microfluidic Device ◽

Microfluidic Devices ◽

Optical Lithography ◽

Working Fluid ◽

The Novel ◽

Flow Rates ◽

Single Function ◽

Fluidic Device ◽

Bifurcation Structures ◽

Novel Design

Developing multifunctional devices are essential to realize more efficient Microsystems. With miniaturization processes taking place in many different applications, the rooms for single function microfluidic devices are limited. In this study, we introduce a multifunctional micro fluidic device based on bifurcation geometry which is capable of performing pumping and mixing at the same time. Optical lithography is used to fabricate the designed microfluidic device. The microfluidic device is tested at low actuator frequencies, and ethanol is employed as a working fluid. The operational principles are based on rectifying the oscillatory flows by using bifurcation structures for flow rectification. The results prove the feasibility of the novel design, and results are presented in terms of flow rates and maximum back pressures.

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