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New Active Control Method Based on Using Multiactuators and Sensors Considering Uncertainty of Parameters
Babak Karimpour,Ali Keyhani,Javad Alamatian
Advances in Civil Engineering , 2014, DOI: 10.1155/2014/180673
Abstract: New approach is presented for controlling the structural vibrations. The proposed active control method is based on structural dynamics theories in which multiactuators and sensors are utilized. Each actuator force is modeled as an equivalent viscous damper so that several lower vibration modes are damped critically. This subject is achieved by simple mathematical formulation. The proposed method does not depend on the type of dynamic load and it could be applied to control structures with multidegrees of freedom. For numerical verification of proposed method, several criterions such as maximum displacement, maximum kinetic energy, maximum drift, and time history of controlled force and displacement are evaluated in two- , five- , and seven-story shear buildings, subjected to the harmonic load, impact force, and the Elcentro base excitation. This study shows that the proposed method has suitable efficiency for reducing structural vibrations. Moreover, the uncertainty effect of different parameters is investigated here. 1. Introduction Smart structures are systems that can teach and protect themselves against the external excitation such as wind and earthquake. Analyzing and designing of smart structures is based on set of sciences including materials science, applied mechanics, electronics, biomechanics, and structural dynamics. In this procedure, maintaining the structural performance against the external hazards is a very important issue called control system. Many studies have been performed in the field of structural control. These methods can be categorized into three groups, that is, passive, semiactive, and active procedures [1]. Due to the simplicity, low cost of assembly and no need to the external power, the passive control systems are numerous. However, the constant control feature makes these systems fail during the earthquakes. In other words, these systems are designed to work only for a certain excitation and limited frequency bound. The passive control system tries to remove the kinetic energy from the structure. Because of the mentioned constraints in passive algorithms, active control is highly regarded systems to cope with the earthquake. These techniques have suitable efficiency in different excitation, so that they could exactly sense and adopt the structural vibrations. To achieve this goal, each active control method is constructed based on algorithm, which verifies its efficiency and accuracy. The application of such systems began in 1989. In these systems an external power source is required so that this applied force affects
A Study on the Role of Human Element (Staffs) in Marine Accidents  [PDF]
Reza Karimpour, Zahra Karimpour
Open Journal of Marine Science (OJMS) , 2016, DOI: 10.4236/ojms.2016.63034
Abstract: Ships usually operate in the vibrant and dynamic environment; a majority of crews work and have a rest in a stressful space and have daily job displacements that working in it and moving from port disrupt as soon as reaching to port. Such conditions which require living at work place for a long time raises a unique job life which causes increase in risks of human mistakes. Huge marine accidents occur per year in country in which human element plays a major role. Identification and analysis of the components affect individuals as the staffs in ships, so that such component raises the conditions due to inattention which result in rise of severe and more severe marine accidents. Evaluation of each component has been taken into account in the present research. The present research seeks to examine and identity factors affecting human elements in marine accidents.
Development of Hybrid Propulsion System for Energy Management and Emission Reduction in Maritime Transport System  [PDF]
Reza Karimpour, Maryam Karimpour
Open Journal of Marine Science (OJMS) , 2016, DOI: 10.4236/ojms.2016.64040
Abstract: Given the strategic importance of energy and air pollution in the today world and due to the fact that the maritime transport system is one of the main sources of energy consumption and emissions in the environment, particularly contamination of water, so in recent years, fuel consumption and emissions reduction in the maritime transport industry has received considerable attention. Thus, in this paper, a new method is provided for typical boat hybridization, so by adding an electric motor and battery to boat power transmission system, dynamic performance will improve fuel consumption and emissions reduces. For this purpose, power transmission system elements are modelled and boat function is evaluated in real terms of movement by defining energy management strategy between power sources. The simulation results show that boat hybridization considerably reduces fuel consumption and emissions.
Agamenon R. E. Oliveira, A History of the Work Concept: From Physics to Economics (New York and London: Springer, 2014)  [PDF]
Babak Amini
Advances in Historical Studies (AHS) , 2015, DOI: 10.4236/ahs.2015.44023
Abstract: Book Review: Agamenon R. E. Oliveira, A History of the Work Concept: From Physics to Economics (New York and London: Springer, 2014)
Presenting an Innovation Model in Orange Technology  [PDF]
Babak Ziyae
Journal of Service Science and Management (JSSM) , 2016, DOI: 10.4236/jssm.2016.95047
Abstract:
Nowadays, the technology is considered as a vital device to help people for consuming time, improving health, happiness and care. The path from green to orange is not only a shift learnt from green technology, but a cohesive image on the determination of technology to human civilization. Orange technology is regarded as an engine of renewal, the cross-disciplinary incorporation of humanities and technology, and the social working of promoting people care, happiness and health. The purpose of this paper is to introduce orange technology as a strategy for technology expansion in the field of improving of human’s life. Since orange technology is ground-breaking and new concept in the field of entrepreneurship, the current study presents an innovative approach that could be considered in the business arena.
A Comprehensive Framework of Corporate Strategies Leveraging Open Innovation  [PDF]
Babak Ziyae
Journal of Service Science and Management (JSSM) , 2017, DOI: 10.4236/jssm.2017.106042
Abstract: Today, corporate strategy entails a clearly defined, long-term idea that organizations set, looking for to create business value and stimulate the structures of corporations to implement the proper actions and to achieve customer satisfaction. In addition, corporate strategy is an incessant process that requires a continuous energy to involve investors in trusting the company with their money, thereby increasing the company’s equity. One of the main corporate strategies in the service and public organizations is corporate governance which is considered as the mechanisms, processes and relations by which corporations are controlled and directed. Governance principles and strategies identify the distribution of responsibilities among regulators, managers, board of directors, shareholders, creditors, auditors, and other stakeholders. It includes the rules and procedures for making decisions in corporate affairs. Corporate governance includes the processes through which corporations’ objectives are set and pursued in the context of the social, regulatory and market environment. Mechanisms of governance mostly involve canning and reviewing of decisions and policies of organizations, their partners, and affected customers and shareholders. This study has been done due to the lack of theoretical literature in this respect and the goal of this study is to design a model of corporate governance with open innovation approach in the insurance industry. The research method is qualitative and based on grounded theory. The sample consists of 8 faculty members and insurance industry experts who have been selected based on purposeful sampling procedure. This research, based on aim is an applied one and based on collecting data through interviews, it is considered as field research. According to research findings, open innovation at inbound, outbound and composition are defined as strategies that enhance corporate governance. Research findings recommended open innovation strategies of various ways to solve the problems of corporate governance should be used in the insurance industry.
Study of the Environmental Health Conditions in the Primary Schools of Ghorve, West of Iran
Moslem Karimpour,Mahmood Khazaeli
Journal of Research in Health Sciences , 2011,
Abstract: Background: Schools have an important role in developing the countries. Physical, health and safety factors are essential for normal growth of students' body, spirit and learning. By using environmental health protocols, it is easier to achieve these aims. Methods: The aim of this research is to study the environmental health conditions in the primary schools of Ghorve, west of Iran. This observational study has been done on 39 primary schools and the data was collected by filling in the questionnaires by observer. The results showed that 66. 7% of the schools were based on a convenient area. Results: There was an unpleasant situation of rubbish collection in 85.7% of schools. Unhealthy toilet, drinking water hand-washing facilities were seen in 62%, 42.8% and 85.7% of schools, respectively. Healthy drinking water was provided in 100% of schools. The space specified per person for health services, class and schools compared with standards was convenient and enough. Conclusions: The results of this research indicated that environmental health conditions in the studied schools were not standard and good.
Analysis of Structure and Textures of Anhydrite Mineral in Gachsaran Formation in Gotvand Area, Iran  [PDF]
Maryam Marandi, Davood Jahani, Ali Uromeihy, Majid Karimpour Reihan
Open Journal of Geology (OJG) , 2017, DOI: 10.4236/ojg.2017.710099
Abstract: Minerals are deposited when evaporation is greater than atmospheric precipitation. Calcium sulfates are one of the most important evaporative minerals which have been expanding over the past few years. In the formation of these minerals, various sedimentary and diagenetic processes play a role from shallow ridges to deep water. The research investigated the types of evaporative minerals (with an emphasis on anhydrite) in Gachsaran Formation in Gotvand dam range (25 km north of Shoushtar city). Investigating the thin sections of evaporative samples of this formation led to the identification of various anhydrite textures. Also, the existence of the main phases of calcium sulfate and NaCl by XRD analyses on a number of samples. The formation of anhydrite, gypsum and halite minerals in Gachsaran Formation in Lagoon and Sabkha environments was identified texture. The most important textures were laths anhydrite, nodule, isolated, radial anhydrite crystals, and porphyroblastic gypsum crystals, most of which are formed at the same stage of precipitation or in the early stages of diagenesis.
Toxic Reactions to Chronic Use of Benzodiazepines: An Overview
Hournaz Karimpour,, Sarvenaz Karimpour,Mohammad Jafar Zamani,Shekoufeh Nikfar
International Journal of Pharmacology , 2005,
Abstract: Benzodiazepines (BZDs) are the most commonly prescribed hypnotic-anexiolytic-sedative drugs in the world. Their effectiveness and safe usage have made them extremely popular among patients. To date more than 30 different brands of BZDs have been introduced to drug market, which vary enormously in side effects, potency and indications. Thus, due to global consumption and diversity of BZDs, lack of a information indicating the BZDs` side effects sorted by induced signs and symptoms, this study would ease the consultation and follow-up of the patients who have undergone BZD treatment. The review first gives a brief introduction about side effects encountered by BZDs and then classifies the signs and symptoms based on the organ involved and mentions which BZDs are responsible for them. The organs and functions which are influenced are classified under: cardiovascular system, CNS, cognitive function, mood changes, endocrine/metabolic, gastrointestinal tract, blood and bone marrow, liver, eyes, respiratory system, skin, genitourinary tract, musculoskeletal system, ears and miscellaneous. Each of these items is also sub-grouped into several categories.
The Effect of Online Peer Feedback on the Academic Writing Ability of Iranian EFL Learners
Mohammad Reza Moradi,Zahra Karimpour
International Education Studies , 2012, DOI: 10.5539/ies.v5n2p113
Abstract: This paper reports an exploratory study of 60 English as a foreign language (EFL) student’s experiences of online peer feedback in an essay writing course at Islamic Azad University, Dezful Branch. They were required to comment on their peers’ writing essays using the checklist to whom had been made available, but in different ways. The groups were required to self-assess their own writing piece, and share it with the other groups, either in offline or online forms and, subsequently, assess the other groups’ essays in light of the criteria in the checklist and let them know about their comments. The performance of the two groups was, subsequently, compared using the t-test statistical analysis. It indicated that there is not any significant difference between the performances of the online and offline groups.
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