scholarly journals GENERATING MULTISCROLL CHAOTIC ATTRACTORS: THEORIES, METHODS AND APPLICATIONS

2006 ◽  
Vol 16 (04) ◽  
pp. 775-858 ◽  
Author(s):  
JINHU LÜ ◽  
GUANRONG CHEN
Keyword(s):  
Piecewise Linear ◽  
Rapid Development ◽  
Linear Functions ◽  
Future Research ◽  
Chaotic Attractors ◽  
Circuit Implementation ◽  
Practical Applications ◽  
Component Design ◽  
Potential Applications ◽  
Circuit Component

Over the last two decades, theoretical design and circuit implementation of various chaos generators have been a focal subject of increasing interest due to their promising applications in various real-world chaos-based technologies and information systems. In particular, generating complex multiscroll chaotic attractors via simple electronic circuits has seen rapid development. This article offers an overview of the subject on multiscroll chaotic attractors generation, including some fundamental theories, design methodologies, circuit implementations and practical applications. More precisely, the article first describes some effective design methods using piecewise-linear functions, cellular neural networks, nonlinear modulating functions, circuit component design, switching manifolds, multifolded tori formation, and so on. Based on different approaches, computer simulation and circuit implementation of various multiscroll chaotic attractors are then discussed in detail, with some theoretical proofs and laboratory experiments presented for verification and demonstration. It is then followed by some discussion on potential applications of multiscroll chaotic attractors, including secure and digital communications, synchronous prediction, random bit generation, and so on. The article is finally concluded with some future research outlooks, putting the important subject into engineering perspective.

Analytical Review of Biometric Technology Employing Vivid Modalities

2021 ◽  
pp. 2250004
Author(s):  
Vandana ◽  
Navdeep Kaur
Keyword(s):  
Security And Privacy ◽  
Future Research ◽  
Multimodal Biometrics ◽  
Biometric Technology ◽  
Practical Applications ◽  
Biometric Systems ◽  
Potential Applications ◽  
Analytical Review ◽  
Comprehensive Survey ◽  
Technology Market

The digitalization has been challenged with the security and privacy aspects in each and every field. In addition to numerous authentication methods, biometrics has been popularized as it relies on one’s individual behavioral and physical characters. In this context, numerous unimodal and multimodal biometrics have been proposed and tested in the last decade. In this paper, authors have presented a comprehensive survey of the existing biometric systems while highlighting their respective challenges, advantage and limitations. The paper also discusses the present biometric technology market value, its scope, and practical applications in vivid sectors. The goal of this review is to offer a compact outline of various advances in biometrics technology with potential applications using unimodal and multimodal bioinformatics are discussed that would prove to offer a base for any biometric-based future research.

scholarly journals Smart Logistics – Conceptualization and Empirical Evidence

2021 ◽  
Vol 20 (2) ◽  
Author(s):  
Manuel Woschank ◽  
Helmut Zsifkovits
Keyword(s):  
Industry 4.0 ◽  
Secondary Data ◽  
Future Research ◽  
Practical Applications ◽  
Smart Logistics ◽  
Technological Concepts ◽  
Recent Developments ◽  
Potential Applications ◽  
Research Frameworks ◽  
Holistic Research

Industry 4.0 approaches have gained increasing relevance and impact on logistics research and practical applications. However, logistics research often focuses on the investigation of isolated concepts, which leads to a systematic neglect of more holistic research frameworks. Therefore, this paper conceptualises Smart Logistics as an important element within the context of Industry 4.0 approaches. Furthermore, a set of technological concepts for Smart Logistics is identified and potential applications are outlined and discussed. Moreover, the paper presents recent developments in the area of Smart Logistics based on both primary and secondary data analyses and recommends further directions for future research efforts.

Recent Patents on the Structure of Medical Endoscope

2021 ◽  
Vol 15 ◽  
Author(s):  
Yu-Dong Bao ◽  
Kai Li ◽  
Dong-Bo Qi ◽  
Wei Wen ◽  
He-Jun Liu
Keyword(s):  
Medical Equipment ◽  
Rapid Development ◽  
Development Trend ◽  
Future Research ◽  
Medical Endoscope ◽  
Practical Applications ◽  
Mechanical Structure ◽  
The Core ◽  
Core Components ◽  
Further Development

Background: Among the core components of Medical Equipment, the Medical Endoscope is the core functional component of medical equipment, which has become the key research around the world. Objective: By comparing and discussing the patents of the medical endoscope, some valuable conclusions have been drawn to predict the future research and development of the Medical Endoscope. Methods: By analyzing the patent features of the medical endoscope in the mechanical structure, image display, and endoscope system, the function of the medical endoscope on the detection of human internal tissues has been explained. In combination with the key technology of the Medical Endoscope, patents related to the medical endoscope have been studied. Results: With the rapid development of technology in the medical industry and the need for practical applications, there is an increase in the requirements for medical endoscopes. Medical endoscopes have carried out a lot of innovations in mechanical structure, image imaging, and endoscope systems. By comparing the characteristics of various patents of medical endoscopes, the main problems of current medical endoscopes, such as complicated structure and poor lighting imaging effect, are analyzed and summarized. The further development trend of medical endoscopes has also been discussed. Conclusion: By improving and optimizing the mechanical structure of the medical endoscope, the lighting method and the three directions of the system, the performance of the medical endoscope can be improved, the loopholes in the current technology can be solved, and it will be more practical.

scholarly journals Carbon nanotubes for flexible batteries: recent progress and future perspective

2020 ◽  
Author(s):  
Sheng Zhu ◽  
Jiang Sheng ◽  
Yuan Chen ◽  
Jiangfeng Ni ◽  
Yan Li
Keyword(s):  
Carbon Nanotubes ◽  
Recent Progress ◽  
Building Blocks ◽  
Future Perspective ◽  
Future Research ◽  
Wearable Electronics ◽  
Practical Applications ◽  
Mechanical And Electrical Properties ◽  
Mechanical Deformations ◽  
Potential Applications

Abstract Flexible batteries, which maintain their functions potently under various mechanical deformations, attract increasing interests due to the potential applications in emerging portable and wearable electronics. Significant efforts have been devoted to material synthesis and structural designs to realize the mechanical flexibility of various batteries. Carbon nanotubes (CNTs) have a unique one-dimensional (1D) nanostructure and are convenient to further assemble into diverse macroscopic structures, such as 1D fibers, 2D films, and 3D sponges/aerogels. Due to their outstanding mechanical and electrical properties, CNTs and CNT-based hybrid materials are superior building blocks for different components in flexible batteries. This review summarizes recent progress on the application of CNTs in developing flexible batteries, from closed-system to open-system batteries, with a focus on different structural designs of CNT-based material systems and their roles in various batteries. We also provide perspectives on the challenges and future research directions for realizing practical applications of CNT-based flexible batteries.

SYNCHRONIZATION AND STABILIZATION OF MULTI-SCROLL INTEGER AND FRACTIONAL ORDER CHAOTIC ATTRACTORS GENERATED USING TRIGONOMETRIC FUNCTIONS

2013 ◽  
Vol 23 (08) ◽  
pp. 1350145 ◽  
Author(s):  
FEI XU ◽  
PEI YU ◽  
XIAOXIN LIAO
Keyword(s):  
Neural Networks ◽  
Fractional Order ◽  
Chaotic Systems ◽  
Piecewise Linear ◽  
Linear Functions ◽  
Chaotic Attractors ◽  
Trigonometric Functions ◽  
Control Laws ◽  
Sigmoidal Functions ◽  
Theoretical Predictions

Sigmoidal functions are usually used to characterize the behavior of dynamical systems, in particular, for neural networks. Recently, multilevel piecewise linear functions have been employed in cellular neural networks (CNN). In this paper, we first use the inverse trigonometric function, tan -1(x), to generate a series of trigonometric functions to obtain one-, two- and three-directional multi-scroll integer and fractional order chaotic attractors. Then, based upon the properties of the chaotic systems, simple feedback control laws are designed to stabilize or synchronize the integer and fractional order chaotic systems. Numerical simulations are presented to demonstrate the applicability of theoretical predictions.

Integrated circuit implementation of multi-dimensional piecewise-linear functions

2010 ◽  
Vol 20 (6) ◽  
pp. 1723-1732 ◽  
Author(s):  
Martin Di Federico ◽  
Tomaso Poggi ◽  
Pedro Julián ◽  
Marco Storace
Keyword(s):  
Integrated Circuit ◽  
Piecewise Linear ◽  
Linear Functions ◽  
Circuit Implementation ◽  
Piecewise Linear Functions

scholarly journals True Grit: How Important is the Concept of Grit for Education? A Narrative Literature Review

2021 ◽  
Vol 10 (1) ◽  
pp. 73
Author(s):  
Rosie Elizabeth Allen ◽  
Chathurika Kannangara ◽  
Jerome Carson
Keyword(s):  
Academic Outcomes ◽  
Strong Predictor ◽  
Future Research ◽  
Educational Context ◽  
School Students ◽  
Practical Applications ◽  
Financial Benefits ◽  
Potential Applications ◽  
Narrative Literature ◽  
Narrative Literature Review

An abundance of literature exists that explores the potential applications of grit in predicting several academic outcomes. Regardless, the concept of grit has been heavily criticised due to the number of inconsistencies among current research. Fully understanding the usefulness of grit in an educational context is a worthwhile pursuit and could yield incredibly influential implications. The current narrative review aimed to address and explore these inconsistencies to determine the true impact of grit on the academic outcomes of school students. Such that, it aimed to establish whether grit was useful in improving outcomes such as academic achievement, attendance and retention. Research posits that grit is a strong predictor of academic outcomes for many, but not all, students. Furthermore, it seems that the predictive abilities of grit can be enhanced by concentrating on the perseverance of efforts component of grit, rather than overall grit. While the importance of grit’s perseverance component has been confirmed; there are several recommendations for future research. Likewise, a number of inconsistencies are discussed relating to grits practical applications within an educational context. Cultivating grittiness, specifically perseverance of efforts, in student populations would reap huge rewards. Indeed, the educational rewards for students would be substantial, as well as the financial benefits for schools and educating institutions. The usefulness of cultivating a perseverance of efforts in students is discussed.

Recent Patents on the Angular Contact Ball Bearing of High-Speed Motorized Spindle

2020 ◽  
Vol 13 ◽  
Author(s):  
Yudong Bao ◽  
Linkai Wu ◽  
Yanling Zhao ◽  
Chengyi Pan
Keyword(s):  
High Speed ◽  
Ball Bearing ◽  
Rapid Development ◽  
Ceramic Materials ◽  
Development Trend ◽  
Numerical Control ◽  
Angular Contact Ball Bearing ◽  
Practical Applications ◽  
High Speed Cutting ◽  
Advantages And Disadvantages

Background:: Angular contact ball bearings are the most popular bearing type used in the high speed spindle for machining centers, The performance of the bearing directly affects the machining efficiency of the machine tool, Obtaining a higher value is the direction of its research and development. Objective:: By analyzing the research achievements and patents of electric spindle angular contact bearings, summarizing the development trend provides a reference for the development of electric spindle bearings. Methods:: Through the analysis of the relevant technology of the electric spindle angular contact ball bearing, the advantages and disadvantages of the angular contact ball bearing are introduced, and the research results are combined with the patent analysis. Results:: With the rapid development of high-speed cutting and numerical control technology and the needs of practical applications, the spindle requires higher and higher speeds for bearings. In order to meet the requirements of use, it is necessary to improve the bearing performance by optimizing the structure size and improving the lubrication conditions. Meanwhile, reasonable processing and assembly methods will also have a beneficial effect on bearing performance. Conclusion:: With the continuous deepening of bearing technology research and the use of new structures and ceramic materials has made the bearing's limit speed repeatedly reach new highs. The future development trend of high-speed bearings for electric spindles is environmental protection, intelligence, high speed, high precision and long life.

The application of virtual reality in health professions� digital education: a narrative review (Preprint)

2018 ◽  
Author(s):  
Lorraine Tudor Car ◽  
Bhone Myint Kyaw ◽  
Josip Car
Keyword(s):  
Virtual Reality ◽  
Professional Education ◽  
Health Professions ◽  
Health Professions Education ◽  
Narrative Review ◽  
Current Evidence ◽  
Future Research ◽  
Educational Content ◽  
Potential Applications

BACKGROUND Digital technology called Virtual Reality (VR) is increasingly employed in health professions’ education. Yet, based on the current evidence, its use is narrowed around a few most applications and disciplines. There is a lack of an overview that would capture the diversity of different VR applications in health professions’ education and inform its use and research. OBJECTIVE This narrative review aims to explore different potential applications of VR in health professions’ education. METHODS The narrative synthesis approach to literature review was used to analyse the existing evidence. RESULTS We outline the role of VR features such as immersion, interactivity and feedback and explain the role of VR devices. Based on the type and scope of educational content VR can represent space, individuals, objects, structures or their combination. Application of VR in medical education encompasses environmental, organ and micro level. Environmental VR focuses on training in relation to health professionals’ environment and human interactions. Organ VR educational content targets primarily human body anatomy; and micro VR microscopic structures at the level of cells, molecules and atoms. We examine how different VR features and health professional education areas match these three VR types. CONCLUSIONS We conclude by highlighting the gaps in the literature and providing suggestions for future research.

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