Robust Model Reference Adaptive Control of Angular Velocity Control Simulation of Brushed DC Motor

Electric motors play an important role in industry as well as our day-to-day life. They are used to generate electrical power in power plants and provide mechanical work in industries. They are also an indispensable part of our daily lives. Electric motors are very important pieces of equipment in our everyday lives. The brushed DC motor is considered to be basic electric motors. The aim of this paper is to introduce students to the modelling of brushed dc motor and to use computer simulation as a tool for conducting transient and control studies. Simulation can be very helpful in gaining insights to the dynamic behaviour and interactions that are often not readily apparent from reading theory. Next to having an actual system to experiment on, simulation is often chosen by engineers to study transient and control performance or to test conceptual designs. Presently, there are many control laws available to control the brushed dc motor. The control law of angular velocity depends on the motor parameters. The motor parameters are time varying, especially load torque, hence adaptive control is one of the best control law. In standard adaptive control, instability may be occur in the presence of unmodeled dynamics. Robust adaptive control is designed so the stability can be guaranteed

Consumption pattern and consumer preference for value- added fish and fish products in north zone of India

Present paper attempts to analyze consumption pattern and consumer preferences towards value-added fish and fish products in north zone of India. Results reveal that socio economic variables affect consumption of value-added fish and fish products. A total of 49 percent respondents were of middle age group (35 t050 years). All were literates except 7 percent from the rural area. All were purchasing fish at least once in 15 days. A total of 90 percent respondents in rural, 77 percent in semi urban and 50 percent in urban area were unaware of value-added fish and fish products. About 10 percent of respondents had consumed it, out of which most were from urban area. Demand analysis by Cobb Douglas (CD) Demand function; revealed that when price of fish, price of the substitutes, income of family and family size were used as independent variables, variation in demand offish explained by CD Demand function was about 39 percent in urban area, 24 percent in semi urban area and 22 percent in rural area. From Garette ranking technique major problems in fish consumption found were irregular supply, lack of fresh fish, high price and presence of bones in fish. While lack of awareness, unavailability, no preference and unacceptable taste were major problems for consumption of value-added fish and fish product

Simulasi Sistem Proteksi Petir Eksternal dengan Metode Pembalik Muatan Menggunakan Matlab

Sistem proteksi petir merupakan suatu sistem yang sangat diperlukan pada saat ini, mengingat peralatan listrik semakin berkembang dengan pesat. Sistem ini melindungi kita serta peralatan listrik kita dari sambaran langsung. Di Indonesia sendiri sebagai kawasan dengan intensitas petir yang tinggi. Secara umum, sistem proteksi petir eksternal terdiri dari dua yaitu sistem proteksi Aktif dan sistem proteksi Pasif. Pada penelitian ini akan membahas tentang simulasi sistem proteksi petir dengan metode pembalik muatan dengan menggunakan prinsip kerja Op-Amp dalam MATLAB dimana dalam pengujiannya akan membandingkan dua buah finial dengan mengukur kuat medan listrik antara keduanya, dimana salah satu finial akan dipasang alat pembalik muatan, dan diberinya spark gap untuk proteksi peralatannya tersebut. Besar pengujian alat proteksi ini menggunakan tegangan impuls sampai 150 KV. Dalam pengujiannya hanya menggunakan parameter tegangan. Setelah diuji akan ada perbandingan dengan hasil perhitungan dan model sebelumnya

Living with a diagnosis of behavioural-variant frontotemporal dementia: The person’s experience.

YesResearch investigating behavioural-variant frontotemporal dementia has concentrated on identifying and quantifying people’s difficulties; yet few studies have considered how people with behavioural-variant frontotemporal dementia make sense of their difficulties. Five participants were interviewed and interpretive phenomenological analysis used to analyse the data. Two superordinate themes emerged: ‘Bewilderment’ and ‘Relationships with others’. ‘Bewilderment’ reflected the feelings of the participants from the start of their dementia, and was divided into two main themes (1) ‘Awareness of change: What’s the problem? and (2) Threats to self: This is not me. The superordinate theme, ‘Relationships with others’, reflected difficulties with social relationships and comprised two main themes (1) ‘Family and friends: Things haven’t changed… but do I say anything wrong?’ and (2) Coping with threats to self: Blame others or just avoid them. The themes were discussed in relation to literature evaluating the difficulties associated with behavioural-variant frontotemporal dementia together with implications for clinical practice

Rights in mind: Thinking differently about dementia and disability

The aim of this paper is to argue for the utility of a relational model of disability, as a way of conceptualizing dementia. We explore whether dementia should be considered as a disability, and whether people with dementia might consider themselves as disabled people. We review examples of, and issues raised by, the political activism of people with dementia. We consider how language constructs dementia negatively. We discuss how the environment influences the experience of dementia. In conclusion, we show that a relational model of dementia lays the basis for a human rights approach to the condition, based on collaborative partnerships between people with dementia and people from other disability communities

Behind the stiff upper lip: war narratives of older men with dementia.

The concept of the stiff upper lip stands as a cultural metaphor for the repression and figurative ¿biting back¿ of traumatic experience, particularly in military contexts. For men born in the first half of the 20th century, maintaining a stiff upper lip involved the ability to exert high levels of cognitive control over the subjective, visceral and emotional domains of experience. In the most common forms of dementia, which affect at least one in five men now in their 80s and 90s, this cognitive control is increasingly lost. One result is that, with the onset of dementia, men who have in the intervening years maintained a relative silence about their wartime experiences begin to disclose detailed memories of such events, in some cases for the first time. This article draws on narrative biographical data from three men with late-onset dementia who make extensive reference to their experience of war. The narratives of Sid, Leonard and Nelson are used to explore aspects of collective memory of the two World Wars, and the socially constructed masculinities imposed on men who grew up and came of age during those decades. The findings show that in spite of their difficulties with short term memory, people with dementia can contribute rich data to cultural studies research. Some aspects of the narratives discussed here may also be considered to work along the line of the counter-hegemonic, offering insights into lived experiences of war that have been elided in popular culture in the post-War years

Ethical implications of the perception and portrayal of dementia

yesThe way we perceive and portray dementia has implications for how we act towards people with dementia and how we address the issue of dementia within society. As a multi-disciplinary working group, established within the framework of the European Dementia Ethics Network of Alzheimer Europe, we aimed to describe the different ways that people with dementia are perceived and portrayed within society and to consider the moral implications of this. In the current paper, we address perceptions of dementia as reflected in explanatory models of its cause and nature, descriptions of characteristics of people with dementia, the use of language, media portrayals and the views of people living with dementia. Academics and professionals could use this exploration to reflect on their behaviour and their use of language regarding people with dementiaThe taskforce’s work arises from the 2013 Work Plan of Alzheimer Europe, which received funding from the European Union in the framework of the Health Programme

Experiences of dementia in a foreign country: qualitative content analysis of interviews with people with dementia

Background: Dementia is a worldwide health concern of epidemic proportions. Research in the field of subjective experience of dementia suffers from a lack of diversity of their participants including immigrants. Different portraits of life with dementia could help us understand how people with dementia conceptualise their experiences of dementia and how they live. Our study aimed to explore the subjective experiences of living with dementia among Iranian immigrants in Sweden. Methods: Qualitative content analysis of interviews with fifteen people with dementia from Iranian immigrant backgrounds were conducted (8 females and 7 males). Results: Three themes and seven associated sub-themes were revealed. The themes included: Being a person with dementia means living with forgetfulness (personal sphere), living with forgetfulness in the private sphere means feeling incompetent but still loved, living with forgetfulness in the public sphere means feeling confident and secure but also isolated. Conclusions: Living with dementia for the participants meant living with forgetfulness. They experienced feeling incompetent but still loved within their families and feeling confident and secure but also isolated in the society. Educating people with dementia and their families about the course and process of dementia may help them understand the changes better and adjust their expectations. Our study can provide a basis for healthcare workers to understand the experiences of living with dementia from this specific perspective