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Articles 1 - 19 of 19
Full-Text Articles in Engineering
An Improved Ant Colony System For A Real Time Routing Strategy, Hannaneh Rashidi-Bajgan, Taravatsadat Nehzati, Napsiah Ismail
An Improved Ant Colony System For A Real Time Routing Strategy, Hannaneh Rashidi-Bajgan, Taravatsadat Nehzati, Napsiah Ismail
Hannaneh Rashidi-Bajgan
There is a large number of literatures about routing and dispatching plans for automated guided vehicle system (AGVS), however a small fraction of these works dealt with dynamic characteristic of this kind of scheduling problems. Current paper surveys a real time strategy to responding requests for supposed material handling system in the plant. We arranged this designing on a preplanned system where all data are known before the constructing routes. An improved ant colony optimization (ACO) is applied in order to find the shortest route path as new solicitations happened. We explore ACO initially for static version of the problem, …
The Effectiveness Of Virtual R&D Teams In Smes: Experiences Of Malaysian Smes, Nader Ale Ebrahim, Shamsuddin Ahmed, Salwa Hanim Abdul Rashid, Zahari Taha
The Effectiveness Of Virtual R&D Teams In Smes: Experiences Of Malaysian Smes, Nader Ale Ebrahim, Shamsuddin Ahmed, Salwa Hanim Abdul Rashid, Zahari Taha
Nader Ale Ebrahim
The number of small and medium enterprises (SMEs), especially those involved with research and development (R&D) programs and employed virtual teams to create the greatest competitive advantage from limited labor are increasing. Global and localized virtual R&D teams are believed to have a high potential for SMEs growth. Due to the fast growing complexity of the new product, coupled with new emerging opportunities of virtual teams, a collaborative approach is believed to be the future trend. This research explores the effectiveness of virtuality in SMEs virtual R&D teams. An online questionnaire emailed to Malaysian manufacturing SMEs and 74 usable questionnaires …
Virtual R&D Teams: A Potential Growth Of Education-Industry Collaboration, Nader Ale Ebrahim, Shamsuddin Ahmed, Salwa Hanim Abdul Rashid, Zahari Taha
Virtual R&D Teams: A Potential Growth Of Education-Industry Collaboration, Nader Ale Ebrahim, Shamsuddin Ahmed, Salwa Hanim Abdul Rashid, Zahari Taha
Nader Ale Ebrahim
In this paper, we present our more than two years research experiences on virtual R&D teams in small and medium-sized enterprises (SMEs) and draws conclusions, giving special attention to the structure of virtual teams required to support education-industry collaboration. We report the relevant results of an online survey study. The online questionnaire was emailed by using a simple random sampling method to 947 manufacturing SMEs. The findings of this study show that SMEs in Malaysia and Iran are willing to use virtual teams for collaboration and the platform for industry-education collaboration is ready and distance between team members or differences …
A Conceptual Model For Development Of New Product In Smes By E-Collaboration And Project Management, Marjan Mohammadjafari, Shamsuddin Ahmed, Siti Zawiah Md Dawal, Hadi Zayandehroodi
A Conceptual Model For Development Of New Product In Smes By E-Collaboration And Project Management, Marjan Mohammadjafari, Shamsuddin Ahmed, Siti Zawiah Md Dawal, Hadi Zayandehroodi
Dr. Marjan Mohammadjafari
No abstract provided.
Applying Group Theory For Solving Machines’ Turnovers With Capital Budgeting Approach, Hannaneh Rashidi-Bajgan, Taravatsadat Nehzati, Napsiah Ismail
Applying Group Theory For Solving Machines’ Turnovers With Capital Budgeting Approach, Hannaneh Rashidi-Bajgan, Taravatsadat Nehzati, Napsiah Ismail
Hannaneh Rashidi-Bajgan
Applying and utilizing technology in modern manufacturing systems needs to update and upgrade facilities repetitively by efficient ways to stay with great productivity along efficiency. Capital Budgeting Problem (CBP) is one of the most important issues in decision making about capital in manufacturing management; CBP determines the best investments in capital goods such as new plans, replacements, research development projects and other worth pursuing authorization subjects. This problem deals with the amount of revenues as the result of investing in the previous periods in order to maximize the amount of Net Present Value (NPV) on the decision time. Making discussions …
Ultra-Thin-Film Aln Contour-Mode Resonators For Sensing Applications, Matteo Rinaldi, Chiara Zuniga, Gianluca Piazza
Ultra-Thin-Film Aln Contour-Mode Resonators For Sensing Applications, Matteo Rinaldi, Chiara Zuniga, Gianluca Piazza
Matteo Rinaldi
This paper reports on the design and experimental verification of a new class of ultra-thin-film (250 nm) aluminum nitride (AlN) microelectromechanical system (MEMS) contour mode resonators (CMRs) suitable for the fabrication of ultra-sensitive gravimetric sensors. The device thickness was opportunely scaled in order to increase the mass sensitivity, while keeping a constant frequency of operation. In this first demonstration the resonance frequency of the device was set to 178 MHz and a mass sensitivity as high as 38.96 KHz⋅μm2/fg was attained. This device demonstrates the unique capability of the CMR-S technology to decouple resonance frequency from mass sensitivity.
Ghz Range Nanoscaled Aln Contour-Mode Resonant Sensors (Cmr-S) With Self-Sustained Cmos Oscillator, Matteo Rinaldi, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Ghz Range Nanoscaled Aln Contour-Mode Resonant Sensors (Cmr-S) With Self-Sustained Cmos Oscillator, Matteo Rinaldi, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Matteo Rinaldi
This paper reports on the design and experimental verification of a new class of nanoscaled AlN Contour-Mode Resonant Sensors (CMR-S) for the detection of volatile organic chemicals (VOC) operating at frequencies above 1 GHz and connected to a chip-based CMOS oscillator circuit for direct frequency read-out. This work shows that by scaling the CMR-S to 250 nm in thickness and by operating at high frequencies (1 GHz) a limit of detection of ~35 zg/µm2 and a fast response time (<1 >ms) can be attained. In addition, the capability to detect concentrations of volatile organic compounds such as 2,6 dinitroluene (DNT) …
Ultra-Thin Super High Frequency Two-Port Aln Contour-Mode Resonators And Filters, Matteo Rinaldi, Chiara Zuniga, Chnegjie Zuo, Gianluca Piazza
Ultra-Thin Super High Frequency Two-Port Aln Contour-Mode Resonators And Filters, Matteo Rinaldi, Chiara Zuniga, Chnegjie Zuo, Gianluca Piazza
Matteo Rinaldi
This paper reports on the demonstration of a new class of ultra-thin (250 nm thick) super high frequency (SHF) AlN piezoelectric two-port resonators and filters. A thickness field excitation scheme was employed to excite a higher order contour extensional mode of vibration in an AlN nano plate (250 nm thick) above 3 GHz and synthesize a 1.96 GHz narrow-bandwidth channel-select filter. The devices of this work are able to operate over a frequency range from 1.9 to 3.5 GHz and are employed to synthesize the highest frequency MEMS filter based on electrically self-coupled AlN contour-mode resonators. Very narrow bandwidth (~ …
Developing Spreadsheet Based Decision Support System To Solve Warehouse Layout Problem, Taravatsadat Nehzati, Napsiah Ismail, Hannaneh Rashidi-Bajgan
Developing Spreadsheet Based Decision Support System To Solve Warehouse Layout Problem, Taravatsadat Nehzati, Napsiah Ismail, Hannaneh Rashidi-Bajgan
Hannaneh Rashidi-Bajgan
A plant layout study is to analyze different physical configurations for an industrial plant. The warehouse layout problem involves allocating several different product types to certain areas of warehouse so that the cost of material handling from docks of the warehouse can be minimized. The layout of a warehouse may need to be change to accommodate new product lines or to add greater flexibility to the warehouse operations. To ensure the success of the project, a detailed planning process should be followed. Regarding to above Decision Support Systems (DSS) are developed to help company’s personnel, modify the configuration of warehouse …
A Multiobjective Genetic Algorithm For Fuzzy Time Windows Vehicle Routing Problem, Hannaneh Rashidi-Bajgan, Taravatsadat Nehzati
A Multiobjective Genetic Algorithm For Fuzzy Time Windows Vehicle Routing Problem, Hannaneh Rashidi-Bajgan, Taravatsadat Nehzati
Hannaneh Rashidi-Bajgan
Vehicle routing problem (VRP) is a well-known combinatorial optimization problem, holds a central place in logistics management. In the business, transportation, time windows are not always strictly complied and the deviation of service time from specific time window determines the customer’s satisfaction level. The purpose of this paper is to pay about restriction on uploading/delivering time when time constraints are not certain. Therefore this study applies fuzzy membership functions to characterize the service level issues associated with time window violations in VRP with two goals so that minimize the travel cost and maximize the supplier’s service level. In facing to …
Control System Performance And Efficiency For A Mid-Depth Lagrangian Profiling Float, B. Mcgilvray, C. Roman
Control System Performance And Efficiency For A Mid-Depth Lagrangian Profiling Float, B. Mcgilvray, C. Roman
Christopher N. Roman
This paper presents the development of a new mid-depth Lagrangian profiling float with a primary emphasis on the control system performance and efficiency. While deep water floats have demonstrated much success in open ocean environments, many are not suited for the additional challenges associated with coastal regions. To study these regions, which are often subject to varying bathymetry within the operating range and higher variations in water density, a more advanced system is required. This new design utilizes pressure and altitude feedback to drive a high volume auto-ballasting system (ABS). The main operating modes of this float include step inputs …
A Novel Approach In Determining Points Of Interactive Transportations In The Firm, Zeinab Barati, Hannaneh Rashidi-Bajgan, Elham Esmaili
A Novel Approach In Determining Points Of Interactive Transportations In The Firm, Zeinab Barati, Hannaneh Rashidi-Bajgan, Elham Esmaili
Hannaneh Rashidi-Bajgan
Partitioning is the most vital element in designing of a firm layout. Today modern working environments are intended to more use of less space which could increase more interactions between related departments. Although progress communications network has reduced the need for physical transportation but the tangible connections between different parts of a firm seems essential still. The firm is willing to reduce transfers to the minimum possible in order to prevent the vain crowd and time stuck. The purpose of this paper is to use a new approach of decision making in the location and layout of firm’s partitions. With …
A Madm Method For Office˗ Job Assignment Problem, Elham Esmaili, Hannaneh Rashidi-Bajgan, Zeinab Barati
A Madm Method For Office˗ Job Assignment Problem, Elham Esmaili, Hannaneh Rashidi-Bajgan, Zeinab Barati
Hannaneh Rashidi-Bajgan
There are different kinds of jobs in any organization; some of them have more traffic to one another, in the other words there are communicative rates between these office jobs. In this paper we want to develop an approach of analytical hierarchy process (ANP) so that enable us in assigning jobs to suitable office rooms. We suppose that we know distances between places and could predict the amount of flow movements between theses jobs and would like to minimize the distance×flow.
Benefits And Pitfalls Of Virtual R&D Teams: An Empirical Study, Nader Ale Ebrahim, Shamsuddin Ahmed, Zahari Taha
Benefits And Pitfalls Of Virtual R&D Teams: An Empirical Study, Nader Ale Ebrahim, Shamsuddin Ahmed, Zahari Taha
Nader Ale Ebrahim
In this paper, advantages and drawbacks of virtual teams in research and development (R&D) are studied. With the globalization of commercial practices and advances in information and communication technologies, increasing numbers of enterprises are establishing cross-functional, geographically distributed virtual teams. Virtual teams in R&D are designed to access external resources and knowledge to maximize the competitive advantage from limited labor and resources. A survey has been conducted on 210 Malaysian and Iranian manufacturing companies, aimed to investigate the characteristics of R&D collaborations and extract the main advantages/disadvantages’ factors of virtual teams. These factors can be a guide line for R&D …
The Relationship Between Project Management And E-Collaboration, Marjan Mohammadjafari Dr, Shamsuddin Ahmed Dr, Siti Zawiah Md Dr, Hadi Zayandehroodi Dr
The Relationship Between Project Management And E-Collaboration, Marjan Mohammadjafari Dr, Shamsuddin Ahmed Dr, Siti Zawiah Md Dr, Hadi Zayandehroodi Dr
Dr. Marjan Mohammadjafari
No abstract provided.
The Preliminary Insight Of Internal-External Npd Practices Integration And Product Development Time In Geographically Distributed Environment, Amlus Ibrahim, Geraldy Dadriyansyah, T Ramayah
The Preliminary Insight Of Internal-External Npd Practices Integration And Product Development Time In Geographically Distributed Environment, Amlus Ibrahim, Geraldy Dadriyansyah, T Ramayah
Geraldy Dadriyansyah
Global competitiveness is one of the most important issues in manufacturing industry nowadays. Almost every company in this business industry is affected by it and they are looking for new ways to remain aligned and competitive. In recent years, the long term success of some manufacturing firms and organizations has been enhanced by their ability to bring new products onto the market at regular and shorter intervals. In order to achieve that, effective new product development requires a good integration and collaboration between internal and external participants. Moreover, in current circumstances, issues on how to effectively integrate NPD constituents in …
Virtual Integration As A Predictor For Product Innovation: A Preliminary Insight, Geraldy Dadriyansyah, Amlus Ibrahim
Virtual Integration As A Predictor For Product Innovation: A Preliminary Insight, Geraldy Dadriyansyah, Amlus Ibrahim
Geraldy Dadriyansyah
The intense competition in manufacturing industry has forced manufacturing firms to switch their product development approach from traditional to concurrent engineering in order to stay competitive in term of product differentiation and innovation. In order to support concurrent engineering practice, both internal and external participants contributing to product development should be located into close proximity; therefore physical integration of team becomes the key enabler of concurrent engineering. However, as the paradigm has been shifted from adopting “centralized integrated product development”, physical integration is no longer efficient and should be replaced by virtual integration. This conceptual paper intends to explore ways …
Virtual Integration As An Approach To Engender Product Innovation And Accelerate Product Development Time: A Literature Analysis, Geraldy Dadriyansyah, Amlus Ibrahim, Mohamad Ghozali Hassan
Virtual Integration As An Approach To Engender Product Innovation And Accelerate Product Development Time: A Literature Analysis, Geraldy Dadriyansyah, Amlus Ibrahim, Mohamad Ghozali Hassan
Geraldy Dadriyansyah
Global competitiveness has forced manufacturing firm, as an internal constituents, to work closer with their suppliers and customers in order to produce highly innovative product in shorter time interval. However as the business trends in manufacturing industry have evolved, centralized integration has become obsolete and no longer be efficient. Concurrent engineering methodology allows manufacturing firms to adopt a new collaboration approach called virtual integration. With the aid of computer-mediated communication, virtual integration is believed to be a promising solution to NPD collaboration issues. Therefore, this conceptual paper is aimed to seek for a new approach to engender product innovation which …
Ss-Dna Functionalized Ultra-Thin-Film Aln Contour-Mode Resonators With Self-Sustained Oscillator For Volatile Organic Chemical Detection, Matteo Rinaldi, Brandon Duick, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Ss-Dna Functionalized Ultra-Thin-Film Aln Contour-Mode Resonators With Self-Sustained Oscillator For Volatile Organic Chemical Detection, Matteo Rinaldi, Brandon Duick, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Matteo Rinaldi
This paper reports on the design and experimental verification of a new class of nanoscale gravimetric sensors based on ultra-thin-film AlN Contour-Mode Resonant Sensor (CMR-S) functionalized with ss-DNA and connected to a chip-based self-sustaining oscillator loop (fabricated in the ON Semiconductor 0.5 μm CMOS process) for direct frequency read-out. The 220 MHz oscillator based on the ultra-thin AlN CMR-S exhibits an Allan Variance of ∼20 Hz for 100 ms gate time. The sensor affinity for the adsorption of volatile organic chemicals such as 2,6 dinitroluene (DNT, a simulant for explosive vapors) is enhanced by functionalizing the top gold electrode of …