Search results for "Tuni"
showing 10 items of 772 documents
Application of the Morris method for screening the influential parameters of fuzzy controllers applied to wastewater treatment plants
2011
In this paper,we evaluate the application of a sensitivity analysis to help fine-tuning a fuzzy controller for a biological nitrogen and phosphorus removal (BNPR) plant. TheMorris Screeningmethod is proposed and evaluated as a prior step to obtain the parameter significance ranking. First, an iterative procedure has been performed in order to find out the proper repetition number of the elementary effects (r) of the method. The optimal repetition number found in this study (r = 60) is in direct contrast to previous applications of the Morris method, which usually use low repetition number, e.g. r = 10 ~ 20. Working with a non-proper repetition number (r) could lead to Type I error (identify…
SELF-TUNING FUZZY CONTROL OF A ROTARY DRYER
2002
Abstract Drying, especially rotary drying is without doubt one of the oldest and most common unit operations in industries. It is a very complex non-linear process including the movement of solids in addition to thermal drying. This means that both the modelling and control of a rotary dryer is difficult with conventional methods. The aim of this research was to improve dryer control by developing control systems based on self-tuning PID-type fuzzy logic controllers. The behaviour of the control systems has been tested with simulations based on the model of a pilot plant dryer located in the Control Engineering Laboratory at the University of Oulu. The control results have been compared ach…
Discovering and creating business opportunities for cloud services
2016
This study focuses on how the opportunities for cloud services are detected.The study develops a framework to detect and exploit cloud-based opportunities.This study incorporates entrepreneurship theories to extend and enrich IS research. Cloud computing provides new business opportunities for firms selling or using cloud services. However, little is known about how software firms detect and exploit these opportunities. Based on in-depth qualitative case studies, this study identified two different pathways followed by software firms when they detect and exploit opportunities. In the first pathway, the opportunity is based on an existing problem and need in the market. In the case firms, th…
What Makes Work Meaningful
2017
Abstract Most organizations nowadays have the required resources and should offer an appropriate culture to provide each employee with the opportunity and context to develop the feeling of meaningful work. The managers and organizational leaders should be the first to recognize and perceive the work they do as being important. In this article, we examine the current development of the study of the nature, causes, and consequences of meaningful work, and we offer ideas of research opportunities regarding the interface of organizational perspectives on performing and providing meaningful work.
No Entrepreneurship without Opportunity: The Intersection of Return Migration Research and Entrepreneurship Literature
2019
Abstract The article proposes a theoretical discussion at the crossroads of the return migration scholarship with the entrepreneurship research. Its main goal is to build an analytical framework in which entrepreneurial experiences of international return migrants are conceptualized. The fertile theoretical legacy within the study of entrepreneurship along with an idealized view of the positive effects of migration constitute essential premises for understanding the biased outputs of the empirical studies of entrepreneurship upon return to the origin country. Firstly, the article draws on the main lines of theorising opportunities within the Weberian and Schumpeterian theoretical traditions…
Gender Differences in the Relationship between Work–Life Balance, Career Opportunities and General Health Perception
2021
Although gender equality is increasingly promoted both in the workplace and in society, and women have now fully entered the workforce, the issue of gender differences in relation to career advancement still seems open. Although gender roles no longer clearly define who is responsible for home care and who is responsible for job duties, some research shows that the conflict between family and work life appears to be a greater problem for women than for men. The aim of this study was to examine the relationship between career opportunities, work–life balance, and well-being perception separately in both female (n = 499) and male (n = 557) respondents in order to shed light on the role …
Égalité des chances à l'école et politiques éducatives d'inclusion en Afrique sub Saharienne : de la rhétorique à la réalité pratique
2011
This paper provides an analysis of the relationship between educational policies of inclusion in Sub-Saharan Africa and school achievement in relation to learners with disabilities. The principle of equal opportunity at school requires the definition of a common framework and the establishment of systems to provide different responses to the difficulties and disadvantages of any kind. Inclusive education is presented as a form of education that could take into account the diverse needs of all learners. We present its different theoretical mechanisms and the limits of its effective implementation in the context of sub Saharan Africa. The results show that despite the existence of a national …
BEHIND THE ATKINSON INDEX: MEASURING EQUALITY OF OPPORTUNITY IN HEALTH
2009
This paper proposes a new approach to the measurement of equality of opportunity in health, based on the path independent Atkinson index of equality. The proposed decomposition is applied both to the ex-ante and the ex-post methodologies recently adopted by the literature. The approach is applied to the measurement of equality of opportunity in health using ten waves of the British Household Panel Survey. Results confirm that socioeconomic background is an important factor determining individual health in adulthood while the incidence of equality of opportunity is around one third of the overall equality according to a substantial stable pattern over years. Our findings also depict that dif…
Encapsulation Response ofCiona intestinalis(Ascidiacea) to Intratunical Erythrocyte Injection
1997
Abstract Electron microscopic studies on the encapsulation induced by erythrocyte injection into the tunic of the ascidian Ciona intestinalis were carried out. The observations reported in the present paper complete the description previously given of capsule architecture and contribute to the characterization of the cells involved in the inflammatory reaction. The inflamed area is surrounded by an ample and peculiar “three-layered coat” respectively composed of flattened and packed extratunical hemocytes, the monolayered epithelium, and a layer of intratunical electron-dense particles. The latter are also clustered, variously arranged, and distributed in the tunic ground substance. The epi…
Phenoloxidase-dependent cytotoxic mechanism in ascidian (Styela plicata) hemocytes active against erythrocytes and K562 tumor cells.
1997
The cytotoxic activity against rabbit erythrocytes (RE) and human K562 tumor cells by Styela plicata hemocytes was significantly related to the phenoloxidase (PO) which converts phenols to quinone and initiates the melanogenic pathway. The effector hemocyte population, separated in a Percoll density gradient band, enriched in a granulocyte type named "morula cells", was examined with RE in a hemocyte cytotoxic assay and plaque forming cell assay. Inhibition experiments with the copper chelating agents 1-phenyl-2-thiourea and tropolone, the substrate analogue sodium benzoate and sodium ascorbate support the notion that hemocyte cytotoxic activity is a PO-dependent mechanism. Treatments of he…