The effectiveness of mindfulness–based cognitive therapy on interpretation bias and dysfunctional attitude in suffering disorder comorbidity social anxiety and depression

زمینه و هدف: همبودی اضطراب اجتماعی- افسردگی از شایع ترین مشکلات نوجوانان محسوب می شود که پیامدهای مخربی برای آنان دارد. هدف پژوهش حاضر بررسی اثر بخشی شناخت درمانی مبتنی بر ذهن آگاهی بر میزان سوگیری تعبیر و نگرش ناکارآمد در مبتلایان به اختلال همبودی اضطراب اجتماعی و افسردگی بود. روش بررسی: روش پژوهش حاضر از نوع طرح نیمه تجربی با پیش آزمون- پس آزمون و پیگیری با گروه گواه است. جامعه آماری این پژوهش کلیه دانش آموزان دختر دوره متوسطه اول و دوم مبتلا به اختلال همبودی اضطراب اجتماعی و افسردگی شهر خرم آباد می باشد که به منظور اجرای پژوهش غربالگری انجام گرفت که ابتدا 437 شرکت کننده با دامنه سنی 14 تا 17 سال، پرسشنامه اضطراب اجتماعی و افسردگی را تکمیل نمودند که از میان آن ها 30 نفر دارای اضطراب اجتماعی و افسردگی همراه بالا (یک انحراف معیار بالاتر از میانگین گروه) انتخاب گردید، سپس 30 نفر منتخب با انتساب تصادفی به 2 گروه 15 نفری آزمایش و گواه تقسیم شدند. گروه آزمایش 8 جلسه 2ساعته (هفته­ای یک جلسه) به صورت گروهی تحت آموزش MBCT قرار گرفتند. بعد از اتمام جلسات، هر دو گروه به پرسشنامه های تعبیر و نگرش ناکارآمد پاسخ دادند. یافته ها: در گروه آزمایش کاهش معنی داری در سوگیری تعبیر مربوط به خود، سوگیری تعبیر مربوط به دیگران (001/0>P) و نگرش ناکارآمد (05/0>P) بعد از دریافت آموزش مشاهده شد. ضمن اینکه نتایج در مرحله پیگیری نیز حفظ شد. نتیجه گیری: با توجه به نتایج حاصله، آموزش های مبتنی بر ذهن آگاهی برای کاهش میزان سوگیری تعبیر و نگرش ناکارآمد در مبتلایان به اختلال همبودی اضطراب اجتماعی و افسردگی توصیه می شود

Product to process lifecycle management in assembly automation systems

Presently, the automotive industry is facing enormous pressure due to global competition and ever changing legislative, economic and customer demands. Product and process development in the automotive manufacturing industry is a challenging task for many reasons. Current product life cycle management (PLM) systems tend to be product-focussed. Though, information about processes and resources are there but mostly linked to the product. Process is an important aspect, especially in assembly automation systems that link products to their manufacturing resources. This paper presents a process-centric approach to improve PLM systems in large-scale manufacturing companies, especially in the powertrain sector of the automotive industry. The idea is to integrate the information related to key engineering chains i.e. products, processes and resources based upon PLM philosophy and shift the trend of product-focussed lifecycle management to process-focussed lifecycle management, the outcome of which is the Product, Process and Resource Lifecycle Management not PLM only

Machine utilisation and breaksdown modelling for measuring productivity using virtual engineering simulation modelling

Results accuracy and reliability of discrete event simulation (DES) models to predict the production line productivities are based on the unexpected breakdowns taken place by machine faults or human errors. Process modeller practices DES modelling to incorporate these breakdowns and corresponding mainte-nances up-to the machine level. But actually breakdowns are potentially taken place at process level com-ponents inside the machine/stations. Domains like Virtual Engineering (VE) allow user to emulate the ac-tual machine build from components using the CAD data and thus define the components level processes model exist inside the machine station. Therefore author came with idea to integrate VE and DES model up-to component level processes to get an improved simulation modelling to analyse the machines breakdowns for validating pre-build and after-build phases of machine development. Initially in this arti-cle it was proposed to produce an algorithm required to integrate and model the component–level DES model driven from the available emulated data models

Product to process lifecycle management in assembly automation systems

Presently, the automotive industry is facing enormous pressure due to global competition and ever changing legislative, economic and customer demands. Product and process development in the automotive manufacturing industry is a challenging task for many reasons. Current product life cycle management (PLM) systems tend to be product-focussed. Though, information about processes and resources are there but mostly linked to the product. Process is an important aspect, especially in assembly automation systems that link products to their manufacturing resources. This paper presents a process-centric approach to improve PLM systems in large-scale manufacturing companies, especially in the powertrain sector of the automotive industry. The idea is to integrate the information related to key engineering chains i.e. products, processes and resources based upon PLM philosophy and shift the trend of product-focussed lifecycle management to process-focussed lifecycle management, the outcome of which is the Product, Process and Resource Lifecycle Management not PLM only

Integration approach to virtual-driven discrete event simulation for manufacturing systems

This is an Accepted Manuscript of an article published by Taylor & Francis in 'International Journal of Computer Integrated Manufacturing' on 11/06/2014, available online: https://doi.org/10.1080/0951192X.2014.924159.Virtual engineering (VE) environment helps to verify process and resource design through visualisation. By using VE, the impacts of re-configurability and new-process additions in the machine stops can be viewed down to the component level. On the other hand, discrete event simulation (DES) typically forecasts the system behaviour over a period of time to predict future performance. During pre-build stages of machines, DES analysis comes with uncertainties, as most of the parameters in the model are based on the assumptions. Therefore, it was aimed to use the validated and verified data, for example ‘process time’ of a machine component available from the VE-emulated systems, in the DES model. Thus, a systematic algorithm was proposed to integrate the VE tool data, with the DES. This article presents the development of a package known as ‘virtual-driven discrete event simulation’ (VDSim), used to establish an integration between the VE and DES domains. The success of this integration depends upon the quality of information and the compatibility of data flow between these independent domains. VDSim integration will help productivity planners and schedulers to get the best possible options for resource selection at stages even when the resource is not physically present

Effect of Excess Al in TiO2-Al Powder Mixture and Susceptor Material on Microwave Synthesis of TiAl/Al2O3 Composite

In this research, TiAl/Al2O3 composite was synthesized from mechanically activated TiO2-Al powder mixtures using microwave heating.The initial powder mixtures were mechanically activated and pressed into cylindrical tablets and then heated in a microwave oven. The effect of different amounts of excess Al and microwave susceptor material (SiC or graphite) on the ignition time and the resultant reaction products were evaluated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis were used for characterization of the synthesized samples. XRD patterns revealed that when there was no excess Al in the initial powder mixture, the main resulting intermetallic phase would be Ti3Al with negligible amounts of TiAl, while with 10 wt% excess Al, TiAl phase could be formed in the composite product.The results also showed that microwave synthesis took place faster and more reproducible when samples were packed in the graphite powder than when placed between two SiC blocks

Innovative mechanism to identify robot alignment in an automation system

This paper is in closed access until 11 February 2020.Robotic applications are commonly used in industrial automation systems. Such systems are often comprised of a series of equipment, including robotic arms, conveyors, a workspace, and fixtures. While each piece of equipment may be calibrated with the highest precision, their alignment in relation to each other is an important issue in defining the accuracy of the system. Currently, a variety of complex automated and manual methods are used to align a robotic arm to a workspace. These methods often use either expensive equipment or are slow and skill-dependent. This paper presents a novel low-cost method for aligning an industrial robot to its workcell at 6 degrees of freedom (DoF). The solution is new, simple and easy to use and intended for the SMEs dealing with low volume, high complexity automated systems. The proposed method uses three dial indicators mounted to a robot end effector and a fixed measurement cube, positioned on a workcell. The robot is pre-programmed for a procedure around the cube. The changes on the dial indicators are used to calculate the misalignment between the robot and the workcell. Despite simplicity of the design, the solution is supported with complex real-time mathematical calculations and proven to identify and eliminate misalignment up to 3mm and 5 degrees to an accuracy of 0.003mm and 0.002 degrees: much higher than the precision required for a conventional industrial robot. In this article, the authors describe a proposed solution, validate the computation both theoretically and through a laboratory test rig and simulation

Business driven engineering for powertrain industry

The Market for the automation industry is rapidly changing and there is tougher competition and greater demand for higher quality products with lower cost and faster delivery to market. However in today's economy, the extra cost for higher quality has to be supported by lowering the production costs and optimizing the resources. In this regard, the powertrain sector of the automobile industry has been the focus of research collaboration between Loughborough University and Ford Motor Company to provide a new approach to the design and reuse of automation systems. In this article work-in-progress is reported which outlines the development of a set of engineering services and its associated engineering application tools. This is aimed to enable industrial end users to enhance the reconfigurability and agility of their development environment via the use of virtual engineering and component-based approaches