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1.

Control of Automated Guided Vehicle with PLC SIMATIC ET200S CPU Martin Kajan, Leo Mrafko, František Duchoň, Peter Hubinský, Ján Šovčfík American Journal of Mechanical Engineering. 2013 1 (7). doi: 10.12691/ajme-1-7-38 Keywords: Automated guided vehicle (AGV), Motor driver, PWM, PLC, IWLAN, HMI Context: Automated guided vehicle systems currently represent modern technology of industrial transportation, which meets criteria for time demanding requirements for material handling. They are particularly useful in operation with focus on field of discrete manufacturing especially in plants, where transport scheme is persistently repeated. This article is focused on development of mobile automated guided vehicle (AGV) controlled by decentralized periphery PLC SIMATIC ET200S CPU. The design of AGV vehicle lies in choosing appropriate driver motor type, design of motor driver for direction and speed control, design of safety components, and in choosing ET200S station modules configuration. The control algorithm for motion control of differential drive chassis is programmed in SIMATIC STEP 7 in LAD, FBD and STL languages. Graphical user interface for vehicle handling is created in WinCC Flexible environment which is implemented into wireless mobile panel MP277F IWLAN with touch screen. The communication between mobile panel and AGV vehicle is realized via industrial wireless LAN (IWLAN) based on SIMATIC NET product of the SCALANCE W series. Abstract Full Text (PDF) [Epub] Full Text (HTML)

2.

Android-Integrated Control of a Six-DOF Robot Arm for Lightweight Handling: A Case Study in U.S. Small Manufacturing Hussien Elharati, Mohamad Hlal, Ahmed Altaher, Abdulhamid Zaidi, Omar Beg Journal of Automation and Control. 2026 9 (1). doi: 10.12691/automation-9-1-1 Keywords: Industrial robotics, 6-DOF robotic arm, Motion control, Android-based interface, Human–machine interface HMI Context: Robotic automation is increasingly critical in modern industry; however, its adoption in small U.S. manufacturing facilities remains limited due to high costs and concerns regarding structural reliability. This paper presents the design, fabrication, and experimental validation of a lightweight, low-cost six-degree-of-freedom (6-DOF) industrial robotic arm intended for precise, low-payload applications such as light material handling and conveyor-based bottle sorting. Carbon fiber–reinforced polymer (CFRP) was selected as the primary structural material to achieve a high stiffness-to-weight ratio while maintaining a compact and efficient design. The robotic arm is engineered for seamless integration with a mobile platform, enhancing deployment flexibility and adaptability across diverse operational environments. Real-time control is achieved through an Android-based graphical interface that computes inverse kinematics and transmits joint commands to an onboard microcontroller via serial communication. The system enables precise control of joint position, velocity, and acceleration. Experimental results demonstrate accurate and reliable performance for small-scale industrial tasks. The mechanical structure was modeled and optimized using Fusion 360, while a user-friendly human–machine interface (HMI) developed in Android Studio enhances operational efficiency and workflow usability. Overall, the robotic arm offers a cost-effective and flexible solution for small manufacturing facilities, effectively bridging the gap between high-performance industrial robotics and lightweight, deployable automation platforms. Experimental results demonstrate reliable system performance, achieving an average trajectory completion time of 13.2 s with a variation of ±0.3 s across repeated trials. The robotic arm supports lightweight handling tasks with consistent repeatability and stable motion execution. Compared to conventional industrial robotic systems, the proposed design significantly reduces system complexity and cost while maintaining acceptable positioning performance for small-scale manufacturing applications. Abstract Full Text (PDF) [Epub] Full Text (HTML)

3.

Financial Contagion Crisis Effect of Subprime on G7: Evidence through the Adjusted Correlation Test and Non-linear Error Correction Models (ECM) Mourad HMI da International Journal of Econometrics and Financial Management. 2014 2 (5). doi: 10.12691/ijefm-2-5-3 Keywords: sub-primes financial crisis, contagion, correlation, nonlinear error correction models Context: The objective of this study is to test the presence of the contagion phenomenon during the US subprime crisis. We adopt the test of adjusted correlation coefficients between markets and propose a new procedure which involves testing the non-linearity of the propagation mechanisms shocks, estimated with a model of long-term interdependence. We apply this methodology to the financial markets which measure the risk perception. Our results prove the existence of some cases of the contagion phenomenon between the financial markets of G7 countries. Abstract Full Text (PDF) [Epub] Full Text (HTML)

4.

Explanatory Factors Determining of ICT Adoption Level in Tunisian Textile Companies Imen Benabderrahmen, Mohsen Bensalem Brahmi, Mourad HMI da Journal of Behavioural Economics, Finance, Entrepreneurship, Accounting and Transport. 2016 4 (1). doi: 10.12691/jbe-4-1-1 Keywords: ICT, factors, Tunisian textile companies Context: The objective assigned by this article is to show that the adoption of ICTs is not only influenced by the traditional factors of the technological distribution but also by the organizational factors and néo--schumpeteriens. From a sample of 110 companies of Tunisian textile sector, we study, in the first place, the level of adoption of ICTs the companies of textile industry while most of the recent studies favored measures of the stock of IT capital or the automation of the tasks. In the second place, our econometric analysis concerns, besides the traditional factors quoted by the epidemic models and the probit, two groups of factors identified recently by the theory of the complementarity and the theory néo-schumpetérienne. Our empirical method handles the biases usually met in the equations of technological adoption as well as in the tests of the organizational complementarity. Our results, further to our questionnaire, show that the distribution of information technologies and communication depends more on organizational factors and néo-schumpetériens than on classic factors. Abstract Full Text (PDF) [Epub] Full Text (HTML)

5.

Bond Markets and Financial Stability: Evidence from the Asian Experience Mourad HMI da, Mohsen Bensalem Brahmi International Journal of Econometrics and Financial Management. 2016 4 (1). doi: 10.12691/ijefm-4-1-3 Keywords: bond markets, financial soundness indicators, financial crisis, Asia Context: Since the advent of the financial crisis of 1997-98, the development of bond markets in Asia is the center of interest of the governments of the region. This effort reflects the prevalent view recently emphasized the importance of domestic bond markets in the prevention of financial fragility in an open capital flows context. The aim of this article is to investigate about the nature and mechanisms of the links between the development of bond markets and financial stability. The analysis focuses on the experience of nine Asian countries over the period 1997 - 2009. The tests cover specific aspects of the development of a bond market hand, and financial stability indicators of capital adequacy, asset quality and profitability in the other hand. The empirical study reveals a significant role of the domestic bond markets in reducing financial vulnerability of the region. Abstract Full Text (PDF) [Epub] Full Text (HTML)