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Article
Publication date: 2 August 2011

Franciszek Balik

The purpose of this paper is to present a new method of optimization of electronic integrated circuits (IC) with imbedded passive modules (PM). The reported method…

Abstract

Purpose

The purpose of this paper is to present a new method of optimization of electronic integrated circuits (IC) with imbedded passive modules (PM). The reported method constitutes an attempt to streamline the optimization process in the AC electrical model stage of the RF Microsystems design.

Design/methodology/approach

In this method, the PM are described in symbolic form while the IC blocks remain described numerically. Whole PM can be represented as some sequence of expressions containing crucial model parameters, nominal and parasitic, which are first precompiled and next, merged automatically with the main program.

Findings

The input data can be updated online according to the user's desiderata. Further, the system offers the possibility to optimize PM in diverse circumstances as well as using different technologies, and including parasitic effects.

Originality/value

Usage of the semi‐symbolic method for IC with embedded PM optimization based on large‐change sensitivity AC analysis method, which appears to be a very efficient and flexible approach to solving such problems.

Details

Microelectronics International, vol. 28 no. 3
Type: Research Article
ISSN: 1356-5362

Keywords

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Book part
Publication date: 1 November 2007

Irina Farquhar and Alan Sorkin

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized…

Abstract

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized innovative information technology open architecture design and integrating Radio Frequency Identification Device data technologies and real-time optimization and control mechanisms as the critical technology components of the solution. The innovative information technology, which pursues the focused logistics, will be deployed in 36 months at the estimated cost of $568 million in constant dollars. We estimate that the Systems, Applications, Products (SAP)-based enterprise integration solution that the Army currently pursues will cost another $1.5 billion through the year 2014; however, it is unlikely to deliver the intended technical capabilities.

Details

The Value of Innovation: Impact on Health, Life Quality, Safety, and Regulatory Research
Type: Book
ISBN: 978-1-84950-551-2

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Article
Publication date: 1 March 2005

J. Heilala, K. Keränen, J.‐T. Mäkinen, O. Väätäinen, K. Kautio, P. Voho and P. Karioja

The aim of the research was to evaluate the concept that utilizes structured planar substrates based on low temperature co‐fired ceramics (LTCC) as a precision platform…

Abstract

Purpose

The aim of the research was to evaluate the concept that utilizes structured planar substrates based on low temperature co‐fired ceramics (LTCC) as a precision platform for the passive alignment of a multimode fiber and wide‐stripe diode laser.

Design/methodology/approach

Presents the manufacturing process for realisation of 3D precision structures, heat dissipation structures and a cooling channel into the LTCC substrate. The developed methodology for 3D modelling and simulation of the system was used to optimize structures, materials and components in order to achieve optimal performance for the final product and still maintain reasonably low fabrication costs. The simulated optical coupling efficiency and alignment tolerances were verified by prototype realization and characterization.

Findings

The achieved passive alignment accuracy allows high coupling efficiency realisations of multimode fiber pigtailed laser modules and is suitable for mass production.

Research limitations/implications

Provides guidance in the design of LTCC precision platforms for passive alignment and presents a hybrid simulation method for photonics module concept analysis.

Practical implications

The three‐dimensional shape of the laminated and fired ceramic substrate provides the necessary alignment structures including holes, grooves and cavities for the laser to fiber coupling. Thick‐film printing and via punching can be incorporated in order to integrate electronic assemblies directly into the opto‐mechanical platform.

Originality/value

Introduces the LTCC 3D precision structures for photonics modules enabling passive alignment of multimode fiber pigtailed laser with high efficiency optical coupling. Demonstrates the hybrid simulation methodology for concept analysis.

Details

Assembly Automation, vol. 25 no. 1
Type: Research Article
ISSN: 0144-5154

Keywords

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Article
Publication date: 4 June 2021

Suyang Yu, Changlong Ye, Guanghong Tao, Jian Ding and Yinchao Wang

The rope-climbing robot that can cling to a rope for locomotion has been a popular piece of equipment for some overhead applications due to its high flexibility. In view…

Abstract

Purpose

The rope-climbing robot that can cling to a rope for locomotion has been a popular piece of equipment for some overhead applications due to its high flexibility. In view of problems left by existing rope-climbing robots, this paper aims to propose a new-style rope-climbing robot named Finger-wheeled mechanism robot (FWMR)-II to improve their performance.

Design/methodology/approach

FWMR-II adopts a modular and link-type mechanical structure. With the finger-wheeled mechanism (FWM) module, the robot can achieve smooth and quick locomotion and good capability of obstacle-crossing on the rope and with the link module based on a spatial parallel mechanism, the robot adaptability for rope environments is improved further. The kinematic models that can present configurations of the FWM module and link module of the robot are established and for typical states of the obstacle-crossing process, the geometric definitions and constraints that can present the robot position relative to the rope are established. The simulation is performed with the optimization calculating method to obtain the robot adaptability for rope environments and the experiment is also conducted with the developed prototype to verify the robot performance.

Findings

From the simulation results, the adaptability for rope environments of FWMR-II are obtained and the advantage of FWMR-II compared with FWMR-I is also proved. The experiment results give a further verification for the robot design and analysis work.

Practical implications

The robot proposed in this study can be used for inspection of power transmission lines, inspection and delivery in mine and some other overhead applications.

Originality/value

An ingenious modular link-type robot is proposed to improve existing rope-climbing robots and the method established in this study is worthy of reference for obstacle-crossing analysis of other rope-climbing robots.

Details

Industrial Robot: the international journal of robotics research and application, vol. 48 no. 4
Type: Research Article
ISSN: 0143-991X

Keywords

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Article
Publication date: 5 May 2015

Mingzhi Dong, Fabio Santagata, Robert Sokolovskij, Jia Wei, Cadmus Yuan and Guoqi Zhang

This study aims to provide a flexible and cost-effective solution of 3D heterogeneous integration for applications such as micro-electro-mechanical system (MEMS…

Abstract

Purpose

This study aims to provide a flexible and cost-effective solution of 3D heterogeneous integration for applications such as micro-electro-mechanical system (MEMS) applications and smart sensor systems.

Design/methodology/approach

A novel 3D system-in-package (SiP) based on stacked silicon submount technology was successfully developed and well-demonstrated by the fabrication and assembly process of a selected smart lighting module.

Findings

The stacked module consists of multiple layers of silicon submounts which can be designed and fabricated in parallel. The bonding and interconnecting process is quite simple and does not require complicated equipment. The 3D stacking design offers higher silicon efficiency and miniaturized package form factor. The submount wafer can be assembled and tested at the wafer level, thus reducing the cost and improving the yield.

Research limitations/implications

The embedding design presented in this paper is applicable for modules with limited number of passives. When it comes to cases with more passive devices, new process needs to be developed to achieve fast, inexpensive and reliable assembly.

Originality/value

The presented 3D SiP design is novel for applications such as smart lighting, Internet of Things, MEMS systems, etc.

Details

Microelectronics International, vol. 32 no. 2
Type: Research Article
ISSN: 1356-5362

Keywords

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Article
Publication date: 5 June 2017

Xiaoyu Li, Osamu Yoshie and Daoping Huang

The purpose of this paper is to detect the existence of unknown wireless devices which could result negative means to the privacy. The perceptual layer of internet of…

Abstract

Purpose

The purpose of this paper is to detect the existence of unknown wireless devices which could result negative means to the privacy. The perceptual layer of internet of things (IoTs) suffers the most significant privacy disclosing because of limited hardware resources, huge quantity and wide varieties of sensing equipment. Determining whether there are unknown wireless devices in the communicating environment is an effective method to implement the privacy protection for the perceptual layer of IoTs.

Design/methodology/approach

The authors use horizontal hierarchy slicing (HHS) algorithm to extract the morphology feature of signals. Meanwhile, partitioning around medoids algorithm is used to cluster the HHS curves and agglomerative hierarchical clustering algorithm is utilized to distinguish final results. Link quality indicator (LQI) data are chosen as the network parameters in this research.

Findings

Nowadays data encryption and anonymization are the most common methods to protect private information for the perceptual layer of IoTs. However, these efforts are ineffective to avoid privacy disclosure if the communication environment exists unknown wireless nodes which could be malicious devices. How to detect these unknown wireless devices in the communication environment is a valuable topic in the further research.

Originality/value

The authors derive an innovative and passive unknown wireless devices detection method based on the mathematical morphology and machine learning algorithms to detect the existence of unknown wireless devices which could result negative means to the privacy. The simulation results show their effectiveness in privacy protection.

Details

International Journal of Pervasive Computing and Communications, vol. 13 no. 2
Type: Research Article
ISSN: 1742-7371

Keywords

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Article
Publication date: 21 September 2010

Chun‐Hsien Liu and Chu‐Ching Wang

The purpose of this paper is to construct an integrative service model from customer and provider perspectives so that it can be utilized to formulate service business strategies.

Abstract

Purpose

The purpose of this paper is to construct an integrative service model from customer and provider perspectives so that it can be utilized to formulate service business strategies.

Design/methodology/approach

The concepts of the resource‐based view (RBV), customer co‐creation and service modules obtained from a literature review are combined to construct a mathematical model. Based on the model, business strategies are formulated by utilizing existing marketing and service frameworks.

Findings

Innovative services can be generated from the model after combining different core services. To gain competitive advantage in a changing environment, a feedback mechanism should be used to provide dynamism.

Research limitations/implications

An empirical test of the model could be undertaken as a future study to test the validity of the model. Adding more attributes to give the model finer resolution will increase the complexity of the model. Extending the application of the model to firms' internal departments will mean that the relationships between departments have to be reinvestigated.

Practical implications

Obtaining the salient attributes with the heuristics of the 80‐20 rule and the large number principle means optimization of resource utilization under the condition of customer satisfaction.

Originality/value

The model, developed by combining the concepts of RBV, customer co‐creation and service modules, is an innovative tool for the formulation of service business strategies.

Details

European Journal of Marketing, vol. 44 no. 9/10
Type: Research Article
ISSN: 0309-0566

Keywords

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Article
Publication date: 26 July 2021

Giovani Gaiardo Fossati, Letícia Fleck Fadel Miguel and Walter Jesus Paucar Casas

This study aims to propose a complete and powerful methodology that allows the optimization of the passive suspension system of vehicles, which simultaneously takes…

Abstract

Purpose

This study aims to propose a complete and powerful methodology that allows the optimization of the passive suspension system of vehicles, which simultaneously takes comfort and safety into account and provides a set of optimal solutions through a Pareto-optimal front, in a low computational time.

Design/methodology/approach

Unlike papers that consider simple vehicle models (quarter vehicle model or half car model) and/or simplified road profiles (harmonic excitation, for example) and/or perform a single-objective optimization and/or execute the dynamic analysis in the time domain, this paper presents an effective and fast methodology for the multi-objective optimization of the suspension system of a full-car model (including the driver seat) traveling on an irregular road profile, whose dynamic response is determined in the frequency domain, considerably reducing computational time.

Findings

The results showed that there was a reduction of 28% in the driver seat vertical acceleration weighted root mean square (RMS) value of the proposed model, which is directly related to comfort, and, simultaneously, an improvement or constancy concerning safety, with low computational cost. Hence, the proposed methodology can be indicated as a successful tool for the optimal design of the suspension systems, considering, simultaneously, comfort and safety.

Originality/value

Despite the extensive literature on optimizing vehicle passive suspension systems, papers combining multi-objective optimization presenting a Pareto-optimal front as a set of optimal results, a full-vehicle model (including the driver seat), an irregular road profile and the determination of the dynamic response in the frequency domain are not found.

Details

Engineering Computations, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0264-4401

Keywords

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Article
Publication date: 1 April 2014

Per Carlborg and Daniel Kindström

This paper aims to investigate the role of service modularity in developing and deploying efficient services, while at the same time meeting diverse customer needs. The…

Abstract

Purpose

This paper aims to investigate the role of service modularity in developing and deploying efficient services, while at the same time meeting diverse customer needs. The analysis distinguishes between different service types and sets forth key issues for service modularization, identifying supporting resources (both internal and customer) and associated modular strategies for the different types.

Design/methodology/approach

The study design used an exploratory case study approach, focusing on three Swedish manufacturing firms that are moving toward an increased service focus (service infusion). Data were collected through interviews and focus groups, and the collected data were analyzed independently, before being merged and synthesized in a cross-case analysis. Themes and patterns were extracted and linked to the theoretical framework following a systematic combining process.

Findings

This study contributes insights to the emerging field of service modularity by investigating process modularization and modular strategies. A framework is put forward outlining modular strategies for four different service types covering both a passive and an active role for a customer. From a theoretical point of view, the role of the customer is added to the discussion to advocate for the necessity of a co-creative perspective in service modularity.

Originality/value

This article contributes to the emerging research field of service modularity by providing empirical insights into how modularization and modular strategies can enable more efficient services. Depending on service type, different modular strategies are set forth. This study also highlights the need to recognize customer-specific activities, resources and competencies as pivotal parts of the modular service processes. Such insights are particularly relevant given the established view of service modules as functions of intra-firm activities.

Details

Journal of Business & Industrial Marketing, vol. 29 no. 4
Type: Research Article
ISSN: 0885-8624

Keywords

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Article
Publication date: 1 April 1987

S. Hamilton

Increasing power densities within electronic equipment have led to a rise in the number of heat related problems being experienced. This paper describes the use of…

Abstract

Increasing power densities within electronic equipment have led to a rise in the number of heat related problems being experienced. This paper describes the use of computerised thermal analysis techniques to optimise the design of passive thermal management systems for electronic equipment.

Details

Circuit World, vol. 14 no. 1
Type: Research Article
ISSN: 0305-6120

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