42,089 research outputs found

    Enabling Communication Technologies for Automated Unmanned Vehicles in Industry 4.0

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    Within the context of Industry 4.0, mobile robot systems such as automated guided vehicles (AGVs) and unmanned aerial vehicles (UAVs) are one of the major areas challenging current communication and localization technologies. Due to stringent requirements on latency and reliability, several of the existing solutions are not capable of meeting the performance required by industrial automation applications. Additionally, the disparity in types and applications of unmanned vehicle (UV) calls for more flexible communication technologies in order to address their specific requirements. In this paper, we propose several use cases for UVs within the context of Industry 4.0 and consider their respective requirements. We also identify wireless technologies that support the deployment of UVs as envisioned in Industry 4.0 scenarios.Comment: 7 pages, 1 figure, 1 tabl

    Integrating labor awareness to energy-efficient production scheduling under real-time electricity pricing : an empirical study

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    With the penetration of smart grid into factories, energy-efficient production scheduling has emerged as a promising method for industrial demand response. It shifts flexible production loads to lower-priced periods to reduce energy cost for the same production task. However, the existing methods only focus on integrating energy awareness to conventional production scheduling models. They ignore the labor cost which is shift-based and follows an opposite trend of energy cost. For instance, the energy cost is lower during nights while the labor cost is higher. Therefore, this paper proposes a method for energy-efficient and labor-aware production scheduling at the unit process level. This integrated scheduling model is mathematically formulated. Besides the state-based energy model and genetic algorithm-based optimization, a continuous-time shift accumulation heuristic is proposed to synchronize power states and labor shifts. In a case study of a Belgian plastic bottle manufacturer, a set of empirical sensitivity analyses were performed to investigate the impact of energy and labor awareness, as well as the production-related factors that influence the economic performance of a schedule. Furthermore, the demonstration was performed in 9 large-scale test instances, which encompass the cases where energy cost is minor, moderate, and major compared to the joint energy and labor cost. The results have proven that the ignorance of labor in existing energy-efficient production scheduling studies increases the joint energy and labor cost, although the energy cost can be minimized. To achieve effective production cost reduction, energy and labor awareness are recommended to be jointly considered in production scheduling. (C) 2017 Elsevier Ltd. All rights reserved

    A new lean change methodology for small & medium sized enterprises

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    SMEs find it difficult to implement productivity improvement tools, particularly those associated with Lean Manufacturing. Larger companies have more success due to greater access to resources. To provide the SMEs with a way to implement Lean sustainably, the European project ERIP develops a new lean change methodology for SMEs. In this paper the methodology is explained and three test cases show the strength of the methodology. The method is a sequence of achieving management and company support, starting with data analysis and identifying problems and consequently solving these problems. Within the workshops, training of employees is conducted. The three test cases show that even through limited efforts, a good productivity improvement can be achieved in a sustainable manner

    Current issue in corporate waqf in Malaysia

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    Corporate waqf is still new for the contemporary Islamic studies in Malaysia. There are limited resources and guidance to explain about corporate waqf. The purposes of this study are to explore the issues, concept and development of corporate waqf. Current structure for corporate waqf also being explored as part of case studies. This paper provides several perspectives and suggestions to this issue. The methodology for this study is secondary data approach by using the data analysis from the related journal and paper. The subject for this study is Selangor Muamalat. This paper come out with the concept and development of the contemporary waqf focused on corporate waqf and there are five current issues identified in the contemporary waqf. Next, seven proposed action plans are suggested to cover the issues. Lastly, the structure of Selangor Muamalat is analyses by focusing on the management structure, financial and operational framework and the Shariah consideration towards Selangor Muamalat structure

    Information logistics: A production-line approach to information services

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    Logistics can be defined as the process of strategically managing the acquisition, movement, and storage of materials, parts, and finished inventory (and the related information flow) through the organization and its marketing channels in a cost effective manner. It is concerned with delivering the right product to the right customer in the right place at the right time. The logistics function is composed of inventory management, facilities management, communications unitization, transportation, materials management, and production scheduling. The relationship between logistics and information systems is clear. Systems such as Electronic Data Interchange (EDI), Point of Sale (POS) systems, and Just in Time (JIT) inventory management systems are important elements in the management of product development and delivery. With improved access to market demand figures, logisticians can decrease inventory sizes and better service customer demand. However, without accurate, timely information, little, if any, of this would be feasible in today's global markets. Information systems specialists can learn from logisticians. In a manner similar to logistics management, information logistics is concerned with the delivery of the right data, to the ring customer, at the right time. As such, information systems are integral components of the information logistics system charged with providing customers with accurate, timely, cost-effective, and useful information. Information logistics is a management style and is composed of elements similar to those associated with the traditional logistics activity: inventory management (data resource management), facilities management (distributed, centralized and decentralized information systems), communications (participative design and joint application development methodologies), unitization (input/output system design, i.e., packaging or formatting of the information), transportations (voice, data, image, and video communication systems), materials management (data acquisition, e.g., EDI, POS, external data bases, data entry) and production scheduling (job, staff, and project scheduling)

    Phase 1 of the automated array assembly task of the low cost silicon solar array project

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    The results of a study of process variables and solar cell variables are presented. Interactions between variables and their effects upon control ranges of the variables are identified. The results of a cost analysis for manufacturing solar cells are discussed. The cost analysis includes a sensitivity analysis of a number of cost factors

    Wireless Sensor Networks for Networked Manufacturing Systems

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    Learning from systems failure : a case study application

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    Bibliography: leaves 255-258.The thesis as a whole concerns the identification and resolution organisational issues and details research that was undertaken in a manufacturing company producing light access equipment, Castor & Ladder incorporating Forlezer (C&L inc. rorlezer). The content itself is based on 'systems thinking' which endorses a holistic approach to problem solving - as opposed to the traditional reductionist or mechanistic approaches - and it is hoped to demonstrate the value of adopting a Systems Approach in resolving problems of an organisational nature. Particularly, the aim is to incorporate the consideration of underlying issues i.e. 'soft' problems pertinent to organisational dynamics, into a coherent and rigorous problem solving approach. In this regard, the approach taken focuses primarily on generating a holistic perception of the contextual 'problem situation' faced by the organisation. The view held is that in order to achieve effective solutions, a critical requirement is to first gain comprehensive understanding of the situation and its complexity. From a research perspective, the intention is to first enrich the perceived problem situation and then only to develop a concern (or hypothesis) that adequately presents the true issues at hand. Next, the aim is to develop the relevant theory applicable and necessary to the understanding and resolution of the situation, and to subsequently apply this theory to the context. In observing the outcome, the validity of the concern, as well as the theory is verified

    The development of a Human Factors Readiness Level tool for implementing industrial human-robot collaboration

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    The concept of industrial human-robot collaboration (HRC) is becoming increasingly attractive as a means for enhancing manufacturing productivity and product. However, due to traditional preventive health and safety standards, there have been few operational examples of true HRC, so it has not been possible to explore the organisational human factors that need to be considered by manufacturing organisations to realise the benefits of industrial HRC until recently. Charalambous, Fletcher and Webb (2015) made the first attempt to identify the key organisational human factors for the successful implementation of industrial HRC through an industrial exploratory case study. This work enabled (i) development of a theoretical framework of key organisational human factors relevant to industrial HRC and (ii) identification of these factors as enablers or barriers. Although identifying the key organisational human factors (HF) was an important step, it presented a crucial question: when should practitioners involved in HRC design and implementation consider these factors? New industrial processes are typically designed and implemented using a maturity or readiness evaluation system, but these do not incorporate of or link to any formal considerations of HF. The aim of this paper is to expand on the previous findings and link the key human factors in the theoretical framework directly to a recognised industrial maturity readiness level system to develop a new Human Factors Readiness Level (HFRL) tool for system design practitioners to optimise successful implementation of industrial HRC

    Safety distance awareness system for Malaysian Driver

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    It is known that the risk of an accident increases exponentially with the speed of the vehicle and most collisions happen when the driver fails to brake at the required time and distance. The objective of this research is to create a Safety Distance Awareness System which aims at warning the driver of the potential frontal collision and to alter Malaysian driver attitudes. This system is to manipulate Malaysian driver attitude that likes to tailgating and to prevent rear-end collision in Malaysia. This is done by using a Sound Navigation and Ranging (SONAR) range finder to determine the distance of the vehicle or obstacle in front of the host vehicle. With the help of microcontroller, the distance of the host vehicle could be determined and a warning will be issued in the form of both visual and hearing so driver could take the correct preventive measure. There will be few stages of warning, the system will intensify the distress warning until the collision occurs. These SDAs do not take any automatic prevention or control to the vehicle to avoid collision. In overall the research hopes to achieve a more convenient driving experience and a safer driving environment by implementing the SDAS to keep drivers aware of the potential hazards ahead of their vehicle. Hopefully the Malaysian government will involve in this research, since the implementation of Safety Distance Awareness System can provide a new alternative in the safety system hence it can reduce accidents in Malaysia
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