bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of heartbeat invalidation detecting mechanism in triple modular redundancy multi‐machine system
Authors: Zou Jian‐xiao , Zhang Zheng‐qian , Xu Hong‐bing 
Published: March 2010

PurposeAccording to the high‐reliability requirement and especial structure of triple modular redundancy (TMR) emergent trip multi‐machine system, the purpose of this paper is to introduce a highly effective invalidation detecting mechanism based on heartbeat mechanism.Design/methodology/approachThe structure of TMR system is designed to be multi‐master and multi‐save. According to the multi‐machine environment, an invalidation detecting mechanism is designed. Considering the advantage and weakness of the traditional PULL and PUSH heartbeat model, the mechanism combines PUSH model with PULL model. To further enhance real‐time ability and reliability of the invalidation detecting mechanism, hierarchy heartbeat monitor and integrating the heartbeat message into data transmission are designed in the mechanism.FindingsThe invalidation detecting mechanism combines PUSH with PULL heartbeat monitor model can enhance reliability and decrease the system misdiagnosis rate greatly. By adapting hierarchy heartbeat mechanism and integrating the heartbeat detecting message into the data transmission, the system communication cost is decreased and the input‐to‐output response time is shortened. The effectiveness and reliability of this mechanism are proved by system field commissioning and MATLAB simulation.Originality/valueUsing a new heartbeat invalidation detecting mechanism, this paper provides a new way of fault diagnosis of TMR multi‐machine system.
Novel 4H‐SiC BJT utilizing floating buried layer in base for high current gain, high current gain stability and high breakdown voltage
Authors: Zhang Yourun , Zhang Bo , Li Zhaoji , Deng Xiaochuan , Liu Xilin 
Published: March 2010

PurposeThe purpose of this paper is to present a novel structure of 4H‐SiC bipolar junction transistor (BJT) to realize high current gain, high current gain stability, and high breakdown voltage.Design/methodology/approachA novel structure of 4H‐SiC BJT with floating buried layer in the base epilayer is presented. The simulation and optimization are done using the TCAD tool.FindingsThis novel structure is increasing the current gain effectively, at the same time, the current gain stability and breakdown voltage are higher comparing with the conventional structure.Originality/valueThe paper proposes a new “4H‐SiC FBL‐BJT” with high current gain, high current gain stability and high breakdown voltage.
Output characteristics analysis for n‐buried‐PSOI sandwiched RF power LDMOS
Authors: Li Zehong , Liu Yong , Wu Lijuan , Yi Li , Zhang Bo , Li Zhaoji 
Published: March 2010

PurposeThe purpose of this paper is to present a novel n‐buried‐PSOI sandwiched radio frequencies (RF) power lateral diffused metal‐oxide semiconductor (LDMOS) and analyze its output characteristics.Design/methodology/approachThe small‐signal equivalent circuit for RF power LDMOS method is used to analyze the proposed structure and the simulation and optimization are done using the computer‐aided design tools.FindingsThis improved structure is clearly decreasing drain‐substrate parasitic capacitance. At 1 dB compression point, its output power, the power‐added efficiency and the breakdown voltage are higher than that of the conventional LDMOS.Originality/valueThis paper puts forward a novel n‐buried‐PSOI sandwiched structure of RF power LDMOS. The analysis indicates that the output characteristics of this device are a great improvement on the conventional LDMOS and the n‐buried‐PSOI, RF power LDMOS proposed by earlier authors.
Comparison between theoretical and measured shielded microstrip dispersion properties in a wide‐frequency range
Authors: Gao Bo , Tong Ling 
Published: March 2010

PurposeThe purpose of this paper is to present the research on the effect of the shielding box to the dispersion properties of the microstrip lines, obtained by both theory analysis and the experimental test. Additionally, some principles about the effect of the shielding box are given, which could provide some useful information for the design of monolithic microwave integrated circuits.Design/methodology/approachThe dispersion of the shielded microstrip line is analysis by the MOL. The measured data are obtained by using vector network analyzer and the calibration method is through, reflect, line. The structure of the test fixtures will also be illustrated in this paper.FindingsThe size of the shielding box has a great impact on the dispersion properties of the microstrip lines. The shielding box will lead to the decrease of the effective dielectric constant of the shielded microstrip lines. The effects of shielding box have a big relation to the ratio of the size of the shielding box to the size of the microstrip lines. When this ratio becomes bigger, the effects will decrease and can even be ignored completely.Originality/valueThis paper presents the effects of the shielding box on the dispersion properties of the microstrip lines. Both the measured results and the theory analysis are given in a wide‐frequency range and the structures of the test fixture are also illustrated in detail.
Physical modeling, theoretical analysis, and experimental test of via holes in microwave planar circuits
Authors: Tian Yu , Tong Ling 
Published: March 2010

PurposeThe purpose of this paper is to present the transmission and reflection characteristic of via holes in microwave planar circuits by the matrix‐penciled moment method (MP‐MOM) including physical modeling, theoretical analysis, and experimental test. Especially, the experimental test is given in detail including device under test design, fixture design, and de‐embedding method.Design/methodology/approachThe MP‐MOM is used to analyze the transmission and reflection characteristic of via holes in a wide frequency band. An emulator is built on MATLAB program (M‐file) to explore the effects of various parameters of via holes.FindingsThe smaller thickness of the dielectric‐slab means the more conductive to transfer. The smaller radius of the via hole means the more conducive to transfer. The lower dielectric constant means the more conductive to transfer.Research limitations/implicationsSome boundary conditions such as perfect magnetic conduction (PMC) and perfect electric condition have not been studied, and only perfectly matched layer, which means the infinite plane is dealt with.Practical implicationsThe transmission and reflection characteristic of via holes will contribute to the design in such fields: microwave planar circuits, multilayer printed circuit boards, radio frequency integrated circuits, monolithic microwave integrated circuits, etc. which can guarantee the maximum transmission and the minimum reflection or radiation.Originality/valueThis paper presents the transmission and reflection characteristic of via holes with different parameters by the MP‐MOM and the design of experimental test including de‐embedding method.
Innovative applications of multidisciplinary researches
Authors: Rudall B.H. , Mann C.J.H. 
Published: March 2010

PurposeThis paper aims to review current research and developments with particular reference to the next‐generation technologies.Design/methodology/approachA general review and survey of selected research and development topics is given, and considers some of the new challenges and applications of future technologies.FindingsThis paper illustrates the multi‐ and trans‐disciplinary natures of studies in cybernetics, systems and management science, with a view to further research and development activity.Practical implicationsThe choice of reviews provides an awareness of current trends in these areas of endeavour.Originality/valueThe reviews are selected from a global database and give a studied assessment of current research and development initiatives.
Cyberspace wars
Authors: Andrew Alex M. 
Published: March 2010

PurposeThe purpose of this paper is to review the influence of the Conficker virus on the internet and show it to be still very much a cause for concern.Design/methodology/approachThe aim is to review developments on the internet, especially those of general cybernetic interest.FindingsAlthough a deadline of first of April 2009 has passed without apparent disruption, the virus continues to be active and dangerous. An impressive amount of ingenuity and expertise has been invested in it.Practical implicationsComputer users must be vigilant and keep anti‐virus software updated. The Conficker worm appears to be organising a worldwide network whose consequences are difficult to predict but likely to be serious.Originality/valueIt is hoped this paper is a valuable periodic review.
Requisitely holistic ethics planning as pre‐condition for enterprise ethical behaviour
Authors: Belak Jernej , Duh Mojca , Mulej Matjaž , Štrukelj Tjaša 
Published: March 2010

PurposeEthical behaviour of enterprises can be attained only by planning of ethics. The purpose of this paper is to show the need for the business ethics planning, to disclose the need for the requisitely holistic planning of enterprise ethics, and to offer the concept of the requisitely holistic planning of enterprise ethics.Design/methodology/approachThe research cognitions on the importance of ethical core values, enterprise culture, ethical climate and informal as well as formal measures of business ethics are discussed and argued in application of the dialectical systems theory. The various research insights are used and applied in concluding concept of requisitely holistic planning of enterprise ethics.FindingsFor successful implementation of the ethics program or plan, it is important that the program is internalized by all enterprise's stakeholders. The paper shows that credibility and ethical behaviour of an enterprise can be achieved only through requisitely holistic planning of enterprise ethics.Practical implicationsThis paper gives us the insights in the state of the importance and interconnection between ethical core values, culture and ethical climate as well as informal and formal measures of business ethics in relation to enterprise ethics implementation. The present research paper also has important practical implications since it shows the importance of the requisitely holistic planning of enterprise ethics in a sense of sustainable development of enterprises as well as enterprises' long‐term success.Originality/valueThe available literature does not provide for a similar research or concept of requisitely holistic planning of enterprise ethics. The paper also models the interconnection between core values, culture, climate and informal as well as formal measures of business ethics in order to understand the importance of enterprise ethics.
A new supplier performance evaluation model
Authors: Kang He‐Yau , Lee Amy H.I. 
Published: March 2010

PurposeMost industries have become increasingly competitive nowadays, and a good supply chain relationship is essential for a company to survive and to acquire reasonable profit. Therefore, supplier selection is very important. The purpose of this paper is to propose a novel model for evaluating the performance of suppliers.Design/methodology/approachA supplier performance evaluation model based on analytic hierarchy process (AHP) and data envelopment analysis (DEA) is constructed. DEA is applied first to evaluate quantitative factors, and the results are transformed into pairwise comparison values for AHP analysis. Qualitative factors are also evaluated through AHP analysis, and a final ranking of suppliers can be obtained by combining the quantitative and qualitative results.FindingsThe proposed model can be applied to evaluate and select the most appropriate integrated circuit packaging company for outsourcing. With the incorporation of experts' opinions and the consideration of qualitative and quantitative factors, the model can provide a both subjective and objective supplier performance ranking.Practical implicationsThe proposed model can be tailored and applied to supplier evaluation and selection in other industries.Originality/valueAlthough many models are available for supplier evaluation, this paper considers both the subjective and objective performance characteristics simultaneously in the evaluation process.
Elements of a cybernetic epistemology: preprogrammed adaptive systems
Authors: Nechansky Helmut 
Published: March 2010

PurposeThe purpose of this paper is to investigate different cybernetic structures of simple adaptive systems and their cognitive and behavioral options.Design/methodology/approachUsing a functional approach, two basic forms of adaptive systems are constructed, which process data on one level respectively two hierarchical levels. Based on that complex combinations of such one‐level and hierarchical structures are investigated.FindingsIt is shown how different cybernetic structures enable simple forms of adaptive behavior. A basic blueprint for the controller structure of animal species is derived from them, with a simple “brain” and a unit for “motion control” as subsystems. Four paths of evolutionary growth are identified that allow a widely independent development of these subsystems.Practical implicationsThe paper provides a typology of simple adaptive systems and discusses the forms of behavior they can develop with preprogrammed – i.e. evolutionary given or technically programmed – decision‐rules. It discusses the requirements that these decision‐rules can form models enabling adaptive behavior. It is suggested that these requirements hold for the models of more complex adaptive systems, too.Originality/valueThis paper is the first in a series of three on a cybernetic theory distinguishing systems able of preprogrammed adaptation, system‐specific adaptation, and learning.
On generative morphological diversity of elementary cellular automata
Authors: Adamatzky Andrew , Martinez Genaro J. 
Published: March 2010

PurposeStudies in complexity of cellular automata do usually deal with measures taken on integral dynamics or statistical measures of space‐time configurations. No one has tried to analyze a generative power of cellular‐automaton machines. The purpose of this paper is to fill the gap and develop a basis for future studies in generative complexity of large‐scale spatially extended systems.Design/methodology/approachLet all but one cell be in alike state in initial configuration of a one‐dimensional cellular automaton. A generative morphological diversity of the cellular automaton is a number of different three‐by‐three cell blocks occurred in the automaton's space‐time configuration.FindingsThe paper builds a hierarchy of generative diversity of one‐dimensional cellular automata with binary cell‐states and ternary neighborhoods, discusses necessary conditions for a cell‐state transition rule to be on top of the hierarchy, and studies stability of the hierarchy to initial conditions.Research limitations/implicationsThe method developed will be used – in conjunction with other complexity measures – to built a complete complexity maps of one‐ and two‐dimensional cellular automata, and to select and breed local transition functions with highest degree of generative morphological complexity.Originality/valueThe hierarchy built presents the first ever approach to formally characterize generative potential of cellular automata.
Feedback‐linearization and fuzzy controllers for trajectory tracking of wheeled mobile robots
Authors: Keighobadi Jafar , Menhaj Mohammad B. , Kabganian Mansour 
Published: March 2010

PurposeThe purpose of this paper is to focus on perfect trajectory tracking control of 2 DOF non‐holonomic mobile robots in which the guidance and control commands are imposed through independent driver wheels. Model‐based nonlinear controllers for these robots with unknown parameters require estimation of a specified set of the robot parameters. The effects of the proposed model dynamics in both local and global coordinate systems are fully examined on the parameter estimation and tracking performance.Design/methodology/approachDesign of suitable feedback linearization (FL) controllers for trajectory tracking control of wheeled mobile robots (WMRs) is first reviewed. A FL controller whose parameters are tuned using fuzzy computations (fuzzy if‐then rules) is then developed. In the line of the other contributions of the paper, a pure fuzzy controller that is merely based on fuzzy if‐then rules is proposed to trajectory tracking control of the mobile robots.FindingsUse of global dynamics for designing a suitable FL control system leads to a perfect compensation for initial off‐tracks. Furthermore, the estimated parameters are unbiased because the corresponding regressor/signal matrix indicates a high rank of persistent excitation. Fuzzy tuning of the controller instead of keeping the gains fixed makes the overall system more robust against measurement noises while upper bounds and fluctuations of the input torques are both remarkably reduced. The pure fuzzy controller is naturally independent of the robot dynamics and therefore, the necessity of parameter estimation algorithm is removed.Originality/valueThe paper provides some new nonlinear controllers for WMRs, in order to make perfect trajectory tracking and initial off‐tracks compensation.
Innovation approach to detect the faults in multidimensional dynamic systems
Authors: Hajiyev Chingiz , Okatan Ali 
Published: March 2010

PurposeThe purpose of this paper is to design the fault detection algorithm for multidimensional dynamic systems using a new approach for checking the statistical characteristics of Kalman filter innovation sequence.Design/methodology/approachThe proposed approach is based on given statistics for the mathematical expectation of the spectral norm of the normalized innovation matrix of the Kalman filter.FindingsThe longitudinal dynamics of an aircraft as an example is considered, and detection of various sensor faults affecting the mean and variance of the innovation sequence is examined.Research limitations/implicationsA real‐time detection of sensor faults affecting the mean and variance of the innovation sequence, applied to the linearized aircraft longitudinal dynamics, is examined. The non‐linear longitudinal dynamics model of an aircraft is linearized. Faults affecting the covariances of the innovation sequence are not considered in the paper.Originality/valueThe proposed approach permits simultaneous real‐time checking of the expected value and the variance of the innovation sequence and does not need a priori information about statistical characteristics of this sequence in the failure case.
The systemic yoyo model: an introduction
Authors: Lin Yi 
Published: March 2010

PurposeThe purpose of this paper is to introduce the necessary background information and literature in order to make this special issue self‐contained.Design/methodology/approachThe paper comprises: an Introduction; Section 2 outlines the origin of the yoyo structure by presenting a brief historical account and the concept of whole evolution of systems; Section 3 introduces the literature on applications of the systemic yoyo model in areas of natural science, social science, epistemology, and practical disastrous weather forecasts; and Section 4 outlines what is contained in this special issue.FindingsA personal account of aspects of a career in systems research and description of a personal ambition to introduce laws for social science and laws that make both natural and social sciences exact at the same time.Originality/valueWith regard to the systemic yoyo model, this paper presents an introduction to what has been accomplished by using this model and what will be presented in this special issue in order to provide all interested colleagues with an overall picture in terms of where the paper stands in the relevant research activities.
The fields and their structures around systemic yoyos
Authors: Lin Yi , He Xiaoya 
Published: March 2010

PurposeThe purpose of this paper is to investigate the structure of the fields of the general systemic yoyo model and how these fields interact with each other.Design/methodology/approachQualitative analysis and figurative reasoning, combined with calculus‐based methods, are employed to enrich the analysis of how spinning yoyos interact with each other. Known laboratory observations in relevant studies, such as those in electromagnetic theory, are employed as the basis of the investigation, while brand new understandings of these observations are derived.FindingsSome well‐known facts of magnetism are shown to hold true with the general systemic yoyo model.Originality/valueIt is shown that general systems also satisfy such important properties of magnets and electricity as the following: like poles attract and opposite poles repel; field intensities can be superpositioned over each other; systems can potentially become yoyo dipoles when influenced by external systems; etc.
Potentials and potential energies of systemic yoyos
Authors: He Xiaoya , Lin Yi 
Published: March 2010

PurposeThe purpose of this paper is to explore the quantitative properties of systemic yoyos both with and without their internal structures.Design/methodology/approachThis entire paper is based on the idea of the infinitesimals so that some of the well‐developed concepts and methods of calculus can be adequately employed to address some of the local properties of spinning yoyos.FindingsThe concepts of potential energies and yoyo potentials of both particle yoyos and general systemic yoyos are introduced and investigated.Originality/valueThis work is expected to pave the necessary ground for further deepened studies along the idea of rotational kinetic energies and rotational momentums.
The physical structure of atoms: a new model
Authors: Lin Yi , He Xiaoya 
Published: March 2010

PurposeThe purpose of this paper is to establish a systemic yoyo model‐based explanation for the internal structure of atoms, which is totally different of the conventional ones.Design/methodology/approachThe spin fields of systemic yoyos are used to explain the interactions between electric and magnetic fields and between elementary particles.FindingsThe concepts of potential pits (traps) and ramparts for electrons and those of nuclear, atomic, and molecular bonds are introduced. These concepts are employed successfully to describe the topological structure of atoms.Originality/valueOther than providing a brand new model for the internal structure of atoms, this paper establishes a deeper understanding of the general systemic yoyo mode.
Manifestation of eddy and meridian fields of systems
Authors: Lin Yi , He Xiaoya 
Published: March 2010

PurposeThe purpose of this paper is to use the general systemic yoyo model to illustrate why electric fields and magnetic fields can manifest each other and interact with each other.Design/methodology/approachThe coordinated interaction of eddy and meridian fields of spinning yoyos is employed as our methodology for the investigation in this paper. At the end, the First Law on State of Motion is beautifully utilized.FindingsAmong many new theoretical discoveries, systemic yoyo models are provided to understand electric currents and the induced magnetic fields, which lead to a distinction between the yoyo structures of permanent magnets and those of the magnetic field induced by electric currents. It is theoretically shown why all fields in nature, such as electric, magnetic, universal, gravitational, and nuclear fields, have to exist in pairs of opposite polarities, even though one polarity might not be visible or recognizable with the current technology. Using the quark structures of spinning yoyos, an explanation is provided for why protons carry positive electric fields, while neutrons are electrically neutral.Originality/valueOne of the originalities of this paper is about its unified theory underlying many observed phenomena of electric and magnetic fields.