50 research outputs found
A modern teaching environment for process automation
Emergence of the new technological trends such as Open Platform Communications Unified Architecture (OPC UA), Industrial Ethernet, cloud computing and the 5th wireless network (5G) enabled the implementation of Cyber-physical System (CPS) with flexible, configurable, scalable and interoperable business models. This provides new opportunities for the process automation systems. On the other hand, the constant urge of industries for cost and material efficient processes demands a new automation paradigm with the latest tools and technologies which should be taken into account while teaching future automation engineers.
In this thesis, the modern teaching environment for process automation is designed, implemented and described. This work explains the connections, configurations and the test of three mini plants including the Multiple Heat Exchanger, the Three-tank system and the Mixing Tank. In addition, OPC UA communication between the server and its clients has been tested. The plants are a part of the state of the art of the architecture that provides the access of ABB 800xA to the cloud services via OPC UA over the 5G test wireless network. This new paradigm changes the old automation hierarchy and enables the cross layered communication in the old architecture.
This modern teaching environment prepares the students for the future automation challenges with the latest tools and merges data analytics, cloud computing and wireless network studies with process automation. It also provides the unique chance of testing the future trends together in this unique process automation setup
The Global Equity Market Reactions of the Oil & Gas Midstream and Marine Shipping Industries to COVID-19: An Entropy Analysis
oai:ojs.pkp.sfu.ca:article/152This article quantifies the information flow between major equities in the Oil & Gas Midstream and Marine Shipping industries, on the basis of the effective transfer entropy methodology. In addition, the article provides the first analysis of investor fear and market expectations in these sectors, according to the Rényi entropy approach. The period of study was extended over five years to fully capture the pre/post-COVID situations. The entropy results reveal a major change in the underlying information flow pattern among equities in the Oil & Gas Midstream and Marine Shipping sectors in the aftermath of COVID-19. According to the new (post-COVID) paradigm, the stocks in the Oil & Gas Midstream and Integrated Freight & Logistics industries have gained momentum in occupying six of the ten positions within the list of the most influential equities in the market, in terms of information transmission. The disorder and randomness have decreased for over 89% of the studied equities, after virus outbreak. For the equities detected with high information-transmission standing, the Rényi entropy results indicate that investors more likely showed a higher level of future expectations and a lower level of fear regarding frequent market events within the post-COVID timeline. Doi: 10.28991/HIJ-2021-02-04-07 Full Text: PD
Analyzing the dimensions and components of organizational culture based on normative and individual variables in the managers of education headquarters in Tehran province
The purpose of the current research is to analyze the dimensions and components of organizational culture based on normative and individual variables in the managers of education headquarters in Tehran province. According to its purpose, the research method is applicable; and in terms of execution method, it is qualitative, descriptive-exploratory; and in terms of its nature, it is among foundation data research. The statistical population of this research includes 12 experts who are well-informed and proficient in the subject of research in the field of management and have a valid scientific background in this field. Sampling method used in this research was non-random purposeful. The method of data collection is referring to documents, semi-structured interviews and questionnaires. For data analysis, Atlas ti software was used to code the interviews. The results showed that in the normative dimension, there are 10 categories: organizational justice, work maturity, ambiguity avoidance, external supervision, decision-making, job promotion, masculinity or feminism, concentration (power distance), customer orientation, productivity with 57 indicators; and in the Individual dimension also has 10 categories: sense of belonging, responsibility, individual creativity, communication, participation (teamwork), identity, self-control, motivation, conflict, interaction in 61 indicators and in 6 categories that include causal conditions, communication conditions, background factors, intervener factors, strategies, consequences were identified.Extended abstractIntroductionJust as people in the society have certain beliefs, values and behaviors that represent their personality; organizations also have common assumptions and basic beliefs that shape their culture. Culture has been defined as the set of spiritual achievements of a nation. Culture is a human invention and made by human hands. This finding reflects the existence and identity of a society (Mirza Mohammadi, 2021). Organizational culture is the personality of the organization and it is considered as the basic infrastructure for transformation and change, and managers should understand its relationship with national culture and strive for organizational cohesion by taking advantage of its strategic role. Organizational culture is an interwoven set of basic assumptions, common inferences and collective wisdom that is formed in the context of previous experiences and findings in facing internal or external issues and serves as a guiding light and an invigorating source plays a role in shaping the behavior of employees and architecture of the present and future of the organization (Mohammadiyan & Shahsavari, 2019).Education is a continuous activity, comprehensive and for everyone, which leads to human growth and development, cultural enrichment and the excellence of society, and therefore, innovation should always be created in it. In other words, education is not specific to an exclusive period and time of life and has no time limit, so it must always be renewed and updated (Safaei et al, 2020). For organizational innovation, development and transformation, one of the important organizational conditions that must be considered in policies and implementation of programs is related organizational culture. The author's many years of experience in executive affairs shows that lack of paying attention to organizational culture has not always led to the desired results of innovation, development, organizational transformation and change in organizations (Hamzeh & Hamzeh, 2016). An organizational culture able to respond to environmental changes can lead to optimal organizational performance.According to the above materials, the researcher asked the main question: what are the dimensions and components of organizational culture based on normative and individual variables in the managers of education headquarters in Tehran province? Theoretical FrameworkOrganizational CultureCulture is a set of customs, standards and individual and social behaviors; therefore, while culture is the effect of many parts of religious views, it is also considered the cause of many conditions and situations. Due to the progress of communication tools and the ever-increasing expansion of their use in many social phenomena and developments, the role of culture has become far greater than in the past; in such a way that culture now plays a decisive role at the domestic, regional and international levels and is one of the tools that governments use to achieve their goals and objectives; in this way, cultural dominance is not a new phenomenon. Cultural policy in the general and customary sense includes a set of goals, principles, priorities and executive policies (Mirza Mohammadi, 2021).Normative and individual variablesIn the conceptual definition of norms, most sociologists are more or less unanimous that norms (forms) are the rules of social behavior that guide a person in social actions. Observing these patterns and rules of behavior expected by the society's culture, and avoiding them is punishable (Khabbaz Yazdiha et al, 2020).Zebardast et al, (2022) investigated the relationship between the transformational leadership factors of educational group managers on the effectiveness of university faculty members through organizational culture. The results showed that the relationship between transformational leadership style of managers and organizational culture was significant and the mediating variable of organizational culture has a significant effect on the relationship between transformational leadership style and the effectiveness of faculty members. It can be said that transformational leadership does not have a direct and significant effect on effectiveness in the final research model. However, transformational leadership affects the effectiveness of faculty members through organizational culture.Yusefi et al, (2022) investigated the impact of individual and normative variables on ethical leadership. The results of the research show that value, job satisfaction, motivation, personality, creativity, components were individual components, and organizational communication, organizational culture, organizational structure, decision-making styles, roles and expectations, goals and strategy were normative components that had a significant impact on ethical leadership.Research methodologyThis research is applicable in terms of purpose, qualitative in terms of execution method: descriptive-exploratory type, and data-based in terms of its nature. The statistical population includes 12 experts and specialists who are well-informed and proficient in the subject of research in the field of management, and have a valid scientific background in this field. Non-random purposeful sampling method is used to determine the samples and determine the experts.Research findingsThree types of coding were used to analyze the data obtained from the interview as well as theoretical foundations, which are: open coding, axial coding and selective coding. For analysis, Atlas ti software was used to code the interviews. The results showed that in the normative dimension, 10 categories were identified: organizational justice, work maturity, ambiguity avoidance, external supervision, decision-making, job promotion, masculinity or feminism, concentration (power distance), customer orientation, productivity with 57 indicators; and in the individual dimension also 10 categories: sense of belonging, responsibility, individual creativity, communication, participation, identity, self-control, motivation, conflict, interaction in 61 indicators, and in 6 categories that include causal conditions, communication conditions, background factors, intervener factors, strategies, consequences.ConclusionThe present research was conducted with the aim of analyzing the dimensions and components of organizational culture based on normative and individual variables in the managers of education headquarters in Tehran province. The results of this research are correspond with the results of Turki et al, (2021), Eimani et al, (2021), Van Dung HA (2020), Yusefi et al, (2020), Mohebbi et al, (2023), Zebardast et al, (2022). Mohebbi et al, (2023) showed that in educational organizations, organizational culture plays an important role in producing teamwork culture and achieving the benefits of the process of participation and collaboration. Educational systems have a special place according to their goals and mission, the most important of which is the training of efficient human resources for other institutions of society; and universities are the most important and key educational organizations that, in addition to training human resources, respond to the social needs for the acquisition and dissemination of knowledge and technology.According to the results obtained in three dimensions, the following suggestions are presented:- The motivation of managers to create team and collaborative activities should be improved. The opportunity to grow, develop and acquire new effective professional skills and knowledge for managers should be provided for the managers. The conditions of sustainable competitive advantage should be designed. The ground for continuous improvement of organizational intelligence in order to realize the learning organization should be prepared. Individual development and strengthening positive behaviors of managers should be considered. By creating a positive organizational atmosphere, the cooperative structure of the organization should be strengthened. Agility of the organization structure according to the suitability of the job and competence of the people and increasing the efficiency and effectiveness of the rules and regulations by simplifying matters should be considered. By supporting individual values and de-stressing people, internal motivation and sense of belonging to the organization should be improved. Influence in decision-making and implementation by delegating authority should be considered. The position of managers in the organization should be changed to facilitator and leader. Try to create an active, effective and sustainable teaching and learning environment. Macro vision, goal setting, strategic planning and management, foresight, future research and future-recording and problem solving ability should be taken into consideration as important points for choosing staff managers
Neurocognitive impairment after off-pump and on-pump coronary artery bypass graft surgery – an Iranian experience
Global, regional, and national cancer incidence, mortality, years of life lost, years lived with disability, and disability-Adjusted life-years for 29 cancer groups, 1990 to 2017 : A systematic analysis for the global burden of disease study
Importance: Cancer and other noncommunicable diseases (NCDs) are now widely recognized as a threat to global development. The latest United Nations high-level meeting on NCDs reaffirmed this observation and also highlighted the slow progress in meeting the 2011 Political Declaration on the Prevention and Control of Noncommunicable Diseases and the third Sustainable Development Goal. Lack of situational analyses, priority setting, and budgeting have been identified as major obstacles in achieving these goals. All of these have in common that they require information on the local cancer epidemiology. The Global Burden of Disease (GBD) study is uniquely poised to provide these crucial data. Objective: To describe cancer burden for 29 cancer groups in 195 countries from 1990 through 2017 to provide data needed for cancer control planning. Evidence Review: We used the GBD study estimation methods to describe cancer incidence, mortality, years lived with disability, years of life lost, and disability-Adjusted life-years (DALYs). Results are presented at the national level as well as by Socio-demographic Index (SDI), a composite indicator of income, educational attainment, and total fertility rate. We also analyzed the influence of the epidemiological vs the demographic transition on cancer incidence. Findings: In 2017, there were 24.5 million incident cancer cases worldwide (16.8 million without nonmelanoma skin cancer [NMSC]) and 9.6 million cancer deaths. The majority of cancer DALYs came from years of life lost (97%), and only 3% came from years lived with disability. The odds of developing cancer were the lowest in the low SDI quintile (1 in 7) and the highest in the high SDI quintile (1 in 2) for both sexes. In 2017, the most common incident cancers in men were NMSC (4.3 million incident cases); tracheal, bronchus, and lung (TBL) cancer (1.5 million incident cases); and prostate cancer (1.3 million incident cases). The most common causes of cancer deaths and DALYs for men were TBL cancer (1.3 million deaths and 28.4 million DALYs), liver cancer (572000 deaths and 15.2 million DALYs), and stomach cancer (542000 deaths and 12.2 million DALYs). For women in 2017, the most common incident cancers were NMSC (3.3 million incident cases), breast cancer (1.9 million incident cases), and colorectal cancer (819000 incident cases). The leading causes of cancer deaths and DALYs for women were breast cancer (601000 deaths and 17.4 million DALYs), TBL cancer (596000 deaths and 12.6 million DALYs), and colorectal cancer (414000 deaths and 8.3 million DALYs). Conclusions and Relevance: The national epidemiological profiles of cancer burden in the GBD study show large heterogeneities, which are a reflection of different exposures to risk factors, economic settings, lifestyles, and access to care and screening. The GBD study can be used by policy makers and other stakeholders to develop and improve national and local cancer control in order to achieve the global targets and improve equity in cancer care. © 2019 American Medical Association. All rights reserved.Peer reviewe
Radial Artery Pseudoaneurysm at the Previous Site of Invasive Monitoring
This report presents a case of left radial artery pseudoaneurysm developing at the previous site of invasive monitoring. The patient had prosthetic mitral valve replacement one month earlier, and anti-coagulation therapy had started on the first post-operative day. The patient’s radial artery aneurysm with a 4-centimeter diameter was resected and the radial artery was ligated
Myxoma of the Superior Vena Cava Origin Presented as a Right Atrial Mass
Myxomas are the most common benign cardiac tumors. Myxomas are more common in the left heart chamber than the right side chamber. An extracardiac origin presenting as a right atrial mass is very rare. We present a case of myxoma originating in the superior vena cava (SVC) in a 24-year-old man, who underwent surgical resection. Preoperative two-dimensional echocardiography demonstrated a mass in the right atrium. Intraoperatively, the tumor was found to have originated from the SVC orifice. The tumor was excised from the SVC by opening the one-third proximal portion of the SVC. Pathological examination revealed a myxoma, and one-year follow-up showed no evidence of the recurrence of any tumors in the SVC
Hemi-Fontan or Bidirectional Cavopulmonary Shunt for Right Ventricular Failure after Mitral Valve Replacement and Acute Ascending Aortic Dissection: Report of Two Cases
Right ventricular failure due to right coronary artery disease, right ventricular hypertrophy, stunning, abnormal septal motion, myocardial infarction, or non-homogeneous distribution of cardioplegia is an uncommon but serious complication of open heart surgery. We report a patient with severe right ventricular hypertrophy secondary to severe mitral valve stenosis and another patient with detachment of the right coronary artery due to the dissection of the ascending aorta. The patients developed right ventricular failure, which persisted after surgery and rendered weaning from cardiopulmonary bypass unsuccessful. Through a hemi-Fontan, or bidirectional cavopulmonary shunt, and an intra-aortic balloon pump, the patients were successfully weaned from cardiopulmonary bypass. This shunt may be an alternative to a right ventricular assist device in some patients with right ventricular failure. The long-term outcome and the indication of bi-directional cavopulmonary shunt has not been confirmed, although it is believed to be effective for saving the life of patients with low cardiac output and acute right ventricular failure. In our cases, six months following the operation, there was some degree of recovery of the right ventricular function. In long-term follow-up, however, it would be interesting for the authors to know if the improved right ventricular function, with better antegrade pulsatile flow in the pulmonary artery, in any way interferes with the functioning of the bidirectional cavopulmonary shunt