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Analyzing the Implications of New Technologies to the Management of Operations – Protocol Proposal and Application Illustration

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Procedia Manufacturing 2019年 39卷 904-912页

作者： Paulo Henrique Brunheroto Cassiano Souza Beller Fernando Deschamps Manufacturing Engineering Graduate Program Department of Mechanical Engineering Federal University of Parana Curitiba PR Brazil Industrial and Systems Engineering Graduate Program Polytechnic School Pontifícia Universidade Católica do Paraná Curitiba PR Brazil

The increasing adoption of new automation and information technologies are transforming production systems into cyber-physical systems (CPS). Although consulting companies have developed management frameworks to better characterize the implications of these technologies to how operations are managed, mainly focusing on new business models, efficiency, and effectiveness, the real impacts on decision areas (e.g., quality management) and performance objectives (e.g., flexibility) are still unclear. How are management systems being transformed? Are new managerial approaches emerging that address the particularities of new technologies? What are the critical success factors for conducting this transformation? To address these questions, a more systematic approach needs to be undertaken. This paper contributes to this by presenting a protocol to be used in systematic studies of the implications of the adoption of new technologies to the management of operations, and by illustrating its application to the analysis of the adoption of a cognitive vision system in an automotive manufacturer primarily deployed for improving product quality. The analysis protocol is based on Pettigrew’s dimensions of context, content, and process for change initiatives and is further subdivided into information requirements, variables to be analyzed and its potential sources of data. The case shows that the application of the protocol was able to reveal that besides expected effects on quality and productivity, new forms of interaction among workers and between workers and supervisors emerged that need further investigation. From the results of the case, future applications of the protocol are discussed.

关键词： management of operations transformation quality management cognitive vision system

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Expanded Diameter of Coronary Metal Stent: Simulation and Experiment

Expanded Diameter of Coronary Metal Stent: Simulation and Ex...

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International Conference on Bioinformatics, Biotechnology, and Biomedical engineering - Bioinformatics and Biomedical engineering (BioMIC)

作者： Alva Edy Tontowi Ogy Satria Ramadhani Sukiman Nurul Aulia Dewi Nahar Taufiq Department of Mechanical and Industrial Engineering Universitas Gadjah Mada Yogyakarta Indonesia Department of Mechanical Universitas Khairun Ternate Indonesia Department of Mechanical and Industrial Engineering Faculty of Engineering Yogyakarta Indonesia Biomedical Engineering Biotechnology Program Study Universitas Gadjah Mada Yogyakarta Indonesia

The following topics are dealt with: biomedical materials; diseases; finite element analysis; medical image processing; medical disorders; medical signal processing; electroencephalography; cellular biophysics; biolog... 详细信息

ISBN: (数字)9781728147116

ISBN: (纸本)9781728147123

关键词： Stress Numerical models Simulation Hydraulic systems Steel Scanning electron microscopy

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Tensional shear load characterization of pin-less friction stir spot welding on aluminium 1100-H12 based on varied parameters

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AIP Conference Proceedings 2024年第1期3115卷

作者： Armansyah C. Bambang Dwi Kuncoro Rahmat Wiguna Randy Firmansyah Ridwan Bambang Rianto Mechanical Engineering Study Program Faculty of Engineering Universitas Pembangunan Nasional Veteran Jl. Rs. Fatmawati Pondok Labu Jakarta Selatan DKI Jakarta 12450 Indonesia Department of Refrigeration Air Conditioning and Energy Engineering National Chin-Yi University of Technology No. 57 Sec. 2 Zhongshan Rd. Taiping Dist. Taichung 41170 Taiwan (R.O.C.) PT Tri Jaya Teknik Jalan Alternatif Jl. Krajan II Warungbambu Karawang Timur Karawang Jawa Barat 41371 Indonesia

In this study, Aluminium 1100-H12 with 1 mm thick was welded using pin-less friction stir spot welding (PFSSW) and then tested via tensional shear test to determine the tensile shear load (TSL) characteristics of its welds. The results obtained revealed that the tensile shear load of the welds was influenced by the parameter variations among revolving speed, depth of tool, and residence time. The clout of 1400 rpm revolving speed showed good properties with the highest value of TSL about 53 MPa at a depth of tool of 0.4 mm and at 9s of residence time. The middle value of TSL was confirmed at about 35 MPa through 990 rpm of revolving speed, 0.3 mm depth of tool, and 5s of residence time. Furthermore, the lowest property of TSL was found at 775 rpm of revolving speed, at 0.2 mm depth of tool, and at 9s of residence time. The results showed the influence of the depth of the tool has significant clout on the tensile shear load, especially at 0.4 mm for each set of revolving speed and residence time. Each set of dwell time to the variation of parameters has no significant clout on the tensile shear load. Good tensile shear loads can be achieved in the range of 45-53 MPa at a depth of tool of 0.4 mm and a revolving speed of 1400 rpm, where the best is 53 MPa at a residence time of 9 seconds.

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Coordination corrected ab initio formation enthalpies

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npj Computational Materials 2019年第1期5卷 633-644页

作者： Rico Friedrich Demet Usanmaz Corey Oses Andrew Supka Marco Fornari Marco Buongiorno Nardelli Cormac Toher Stefano Curtarolo Department of Mechanical Engineering and Materials Science Duke UniversityDurhamNC 27708USA Center for Materials Genomics Duke UniversityDurhamNC 27708USA Department of Physics and Science of Advanced Materials Program Central Michigan UniversityMount PleasantMI 48859USA Department of Physics and Department of Chemistry University of North TexasDentonTX 76203USA Materials Science Electrical EngineeringPhysics and ChemistryDuke UniversityDurhamNC 27708USA Fritz-Haber-Institut der Max-Planck-Gesellschaft 14195 Berlin-DahlemGermany

The correct calculation of formation enthalpy is one of the enablers of ab-initio computational materials *** several classes of systems(***)standard density functional theory produces incorrect *** we propose the“coordination corrected enthalpies”method(CCE),based on the number of nearest neighbor cation–anion bonds,and also capable of correcting relative stability of *** uses calculations employing the Perdew,Burke and Ernzerhof(PBE),local density approximation(LDA)and strongly constrained and appropriately normed(SCAN)exchange correlation functionals,in conjunction with a quasiharmonic Debye model to treat zero-point vibrational and thermal *** benchmark,performed on binary and ternary oxides(halides),shows very accurate room temperature results for all functionals,with the smallest mean absolute error of 27(24)meV/atom obtained with *** zero-point vibrational and thermal contributions to the formation enthalpies are small and with different signs—largely canceling each other.

关键词： corrected vibrational oxides

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Effect of low temperature and period of storage on the quality of Garlic Seeds (Allium sativum L) 1

Effect of low temperature and period of storage on the quali...

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1st International Conference on mechanical Electronic and Biosystem engineering, MEBSE 2018

作者： Nurmalia, N. Purwanto, Y.A. Sobir, S. Sulassih, S. Naibaho, N. Post Graduate Program of Postharvest Technology Department of Mechanical and Biosystem Engineering Bogor Agricultural University Indonesia Center of Tropical Horticulture Studies Bogor Agricultural University Indonesia Department of Agronomy and Horticulture Bogor Agricultural University Indonesia

The aim the study was to analyze the effect of temperature storage of garlic seeds including weight loss, sprouting and damage during the storage period. The samples of Garlic seeds are local varieties, cv. Lumbu Hijau and cv. Lumbu Kuning were collected from the farmers in Temanggung Regency. The experiments were set at two different temperature conditions, i.e. 5°C and room temperature (29-31°C) as a control. The relative humidity (RH) of storage conditions was 50-70% for cold storage and 70-80% for storage in room temperature. The amout of sampel used was about 47-68 tubers (500 g) for cv. Lumbu Hijau and around 24-32 tubers (500 gr) for cv. Lumbu Kuning, were placed in cold storage at different temperatures and in dark. The period of storage was design for 5 months. All experiments were carried out in three replications. The results showed that the decrease in weight loss for garlic stored at storage temperatures of 5°C and room temperature were 10.48 and 7.46 % for cv. Lumbu Hijau and 15.03 and 11.38 % cv. Lumbu Kuning, respectively. The higest sprouting percentage was found for those seeds garlic cv. Lumbu Kuning at 5°C, i. e, 22.22 %. The highest percentage of damage after 5 months of storage was found in the seeds of garlic cv. Lumbu Hijau stored at room temperature were 2.30 % and cv. Lumbu Kuning at 5°C were 19.04 %. © Published under licence by IOP Publishing Ltd.

关键词： Cold storage

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Non-linear analysis of seismic performance of low-rise concrete buildings in Indonesia

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IOP Conference Series: Earth and Environmental Science 2021年第1期794卷

作者： Riza Suwondo Dave Mangindaan Lee Cunningham Sohaib Alama Civil Engineering Department Faculty of Engineering Bina Nusantara University Jakarta Indonesia 11480 Professional Engineer Program Department Faculty of Engineering Bina Nusantara University Jakarta Indonesia 11480 Department of Mechanical Aerospace and Civil Engineering The University of Manchester UK Department of Civil Engineering King Abdulaziz University Jeddah Saudi Arabia

It is well known that the parts of Indonesia are considered as moderate to high seismicity zones. The Indonesian Standard for seismic design has been developed based on linear analysis which is the most common approach in seismic analysis. This study presents an evaluation of a low-rise reinforced concrete building using non-linear analysis. The main purpose of this study is to investigate the actual safety level of a concrete building seismically designed according to the Indonesian Standard. The results showed that the building satisfies the intended objectives of the seismic design both in terms of global and local response.

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Pose estimation of vehicles over uneven terrain

arXiv

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arXiv 2019年

作者： Ma, Yingchong Shiller, Zvi Paslin Laboratory for Robotics and Autonomous Vehicles Department of Mechanical Engineering and Mechatronics Ariel University Ariel40700 Israel

This paper presents a method for pose estimation of off-road vehicles moving over uneven terrain. It determines the contact points between the wheels and the terrain, assuming rigid contacts between an arbitrary number of wheels and ground. The terrain is represented by a 3D points cloud, interpolated by a B-patch to provide a continuous terrain representation. The pose estimation problem is formulated as a rigid body contact problem for a given location of the vehicle's center of mass over the terrain and a given yaw angle. The contact points between the wheels and ground are determined by releasing the vehicle from a given point above the terrain, until the contact forces between the wheels and ground, and the gravitational force, reach equilibrium. The contact forces are calculated using singular value decomposition (SVD) of the deduced contact matrix. The proposed method is computationally efficient, allowing real time computation during motion, as demonstrated in several examples. Accurate pose estimations can be used for motion planning, stability analyses and traversability analyses over uneven terrain. Copyright © 2019, The Authors. All rights reserved.

关键词： Motion planning

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A transient FEA-based methodology for designing soft surgical manipulators 15

A transient FEA-based methodology for designing soft surgica...

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15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Elkeran, Mohamed Fanni, Mohamed Department of Mechatronics and Robotics Engineering Egypt-Japan University of Science and Technology Egypt Department of Production Engineering and Mechanical Design Faculty of Engineering Mansoura University Egypt

ISBN: (纸本)9781538660720

Traditionally, any new development in soft robotics has to come first through many trial-and-error experiments. Many researchers tried to develop analytical models either to study certain phenomena in an already existed deigns or to use them to enhance soft robots performance. However, there is no general methodology that can be used to design any arbitrary soft robot from scratch. Such methodology should have the ability to test different operation scenarios for checking certain control approaches or certain types of sensors and actuators. This paper introduces a general tool for developing soft surgical manipulators, which is based on transient finite element analysis (FEA). To verify the feasibility of the proposed approach, experiments have been conducted on a fabricated soft manipulator. The test setup incorporates pressure sensors and vision tracking system to record the manipulator trajectory. Air pressure measurements are used as input to FEA for transient simulation. The experimental results demonstrate high level of agreement with FEA results and prove that the suggested approach is promising to be used in designing new soft surgical robots. © 2018 IEEE.

关键词： Finite element method

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Double Layers Omega FETs with Ferroelectric HfZrO2 for One-Transistor Memory

Double Layers Omega FETs with Ferroelectric HfZrO2 for One-T...

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Annual International Symposium on Reliability Physics

作者： K.-T. Chen C. Lo Y.-Y. Lin C.-Y. Chueh C. Chang G.-Y. Siang Y.-J. Tseng Y.-J. Yang F.-C. Hsieh S.-H. Chang H. Liang S.-H. Chiang J.-H. Liu Y.-D. Lin P.-C. Yeh C.-Y. Wang H.-Y. Yang P.-J. Tzeng M.-H. Liao S. T. Chang Y.-Y. Tseng M. H. Lee Institute and Undergraduate Program of Electro-Optical Engineering National Taiwan Normal University Taipei Taiwan Electronic and Optoelectronic System Research Laboratories Industrial Technology Research Institute Hsinchu Taiwan Department of Mechanical Engineering National Taiwan University Taipei Taiwan Department of Electrical Engineering National Chung Hsing University Taichung Taiwan TCAD Silicon Engineering Group Synopsys Taiwan Co. Ltd. Hsinchu Taiwan

ISBN: (数字)9781728131993

ISBN: (纸本)9781728132006

The 3D double layer Ω-type FETs with ferroelectric HfZrO 2 gate served for one-transistor (1T) architecture is demonstrated and studied for memory reliability. The high endurance is presented more than 10 6 cycles P/E with 4V. Multi-domain model integrated with TCAD is proposed by adding a coupling coefficient for the polarization gradient term of the free energy, and calculating for nanosheet GAA-FETs. The polarization orientation is assigned randomly by Gaussian distribution into individual domain for multi-dimensional 3D device simulation. The data retention is degraded due to depolarization field occurrence at the corner by modeling results. The feasible structure paves the candidate for emerging memory applications.

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Characteristics of Kemiri Sunan (reutalis trisperma (blanco) airy shaw) biodiesel processed by a one stage transesterification process

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IOP Conference Series: Earth and Environmental Science 2021年第1期623卷

作者： S Supriyadi P Purwanto H Hermawan D D Anggoro C Carsoni A Mukhtar Department of Mechanical Engineering Universitas PGRI Semarang Semarang Indonesia Doctoral Program of Environmental Science School of Postgraduate Studies Universitas Diponegoro Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Diponegoro Semarang Indonesia Semarang Indonesia Department of Electrical Engineering Faculty of Engineering Universitas Diponegoro Semarang Indonesia

Kemiri sunan (Reutalis trisperma (blanco) airy shaw) is a plant that has the potential to be developed as a biodiesel feedstock in Indonesia because its fruit seeds have several advantages compared to jatropha and palm oil, including its oil content and productivity. The biodiesel production process consists of three stages, namely, esterification, transesterification, and purification. The process requires strong mixing to obtain sufficient contact between the vegetable oil and the catalyst or alcohol, especially at the beginning of the reaction. It is carried out manually in the reaction process through mechanical mixing (stirring) and heating in the transesterification process. Furthermore, biodiesel production process is greatly influenced by the accuracy of concentration and type of catalyst. This study aims to identify the optimal method for the process of biodiesel production from kemiri sunan oil. The research was conducted with a one-stage transesterification to determine the biodiesel yield and quality. The results showed that several biodiesel parameters satisfied the Indonesian National Standard (SNI) for biodiesel (SNI number 7182:2015). However, the kinematic viscosity of biodiesel was still higher than the standard.

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