201 research outputs found
Importance Sampling for a Markov Modulated Queuing Network with Customer Impatience until the End of Service
Get PDFFor more than two decades, there has been a growing of interest in fast simulation techniques for estimating probabilities of rare events in queuing networks. Importance sampling is a variance reduction method for simulating rare events. The present paper carries out strict deadlines to the paper by Dupuis et al for a two node tandem network with feedback whose arrival and service rates are modulated by an exogenous finite state Markov process. We derive a closed form solution for the probability of missing deadlines. Then we have employed the results to an importance sampling technique to estimate the probability of total population overflow which is a rare event. We have also shown that the probability of this rare event may be affected by various deadline values.Importance Sampling, Queuing Network, Rare Event, Markov Process, Deadline
Tides level indicator / Mohd Rahmani Mat Akhir, Muhammad Nashrullah Faisal and Muhammad Nazhiim Ikmal Hilmi
Get PDFFor a people who live nearby the sea or mostly depending on the sea like fisherman and people live near the coastline are having a hard time whenever the water tides change out of expectation. Usually by day light people indicate the water tides by observe near the seashore and from nearest jetty. But whenever day turn to night, there is no precise way on how to determine and indicate the situation. Then, there will be a problem when the tides level increase suddenly. This situation may give a big problem to the villagers and people nearby. Furthermore, loading process must be done by the normal tides level and how to measured this level without any devices. Nowadays, news also aware about this situation, the news shows the world how dangerous could be if this situation has no sequel and no action be taken. By creating ‘THE TIDES LEVEL INDICATOR’, this matter will solve in no time. The tides level indicator is one of its kind projects that exist with low cost required. For actual life product will cost a lot of expenses because the equipment is in Marine specification. The idea is simple, by combining two type of project which is water level indicator and a range finder. The indication process is due to the calculation frequency feedback proportional to time measurement. By that we can determine on what level of the water tides situation at the current time. This device that had been created was easily to handle. This device will indicate five situations that will show the user if the tides condition was high, low or the tide was at the normal situation. When the tides dangerously low or high this device will give an alarm and tell a user this condition. The user can take the earlier precaution. This device will indicate the situation at the difference place that this device were place on. The range of the situation based on the situation and condition of the place. This whole project will be using a board called Arduino Uno and ultrasonic sensor as its basics equipment. The calculation programming is done by Arduino board and using an ultrasonic module sensor as the device to detect the frequency of high peak. As additional, this project can be upgraded to multiple additional devices such as solar cell, GSM moderm, LCD display and act. Furthermore this device can place at the ship to indicate the deep of the sea
Divine Architecture: Non-Algorithmic World-Selection and Rahmani Branch-Optimization in Strong Occasionalism
No full textThe Leibnizian best-possible-world theodicy subjects divine sovereignty to an external axiological calculus, generating an intractable architectonic problem. Contemporary rivals (libertarian agent-causation, Thomistic concurrentism, Molinism) attempt escape via metaphysical "hatches" that, upon analysis, collapse into hidden occasionalism or incoherence. This paper argues that a coherent theology of divine sovereignty and love requires embracing strong occasionalism as its foundation. Building on two companion papers—which establish the incommensurability of world-types via Category Theory and resolve the occasionalist "author of sin" paradox via Formal Agency—we construct the Two-Tier Sovereign Model. In Tier 1, God makes a non-algorithmic, sovereign selection among incommensurable world-types (e.g., C_W1: Redemptive Struggle). In Tier 2, within the chosen type, God instantiates the Rahmani-Optimal Branch via a Threefold Filter that optimizes for essential consistency, maximal formal agency, and contextual divine mercy (rahmah). This model synthesizes absolute divine causality with meaningful creaturely responsibility, reframes the problem of evil as a question of sovereign expressive choice and rahmani-optimal context-setting, and yields the Rahmani-Optimality Thesis: our world is the optimally merciful instantiation of a sovereignly chosen kind of goodness. The result is a robust, non-consequentialist theological architecture that affirms God as both perfectly sovereign and perfectly good
Telle Antigone, relever le père harki. Le récit comme sépulture dans Moze de Zahia Rahmani
Get PDFMoze, le premier récit de l’auteure française d’origine algérienne Zahia Rahmani, explore une figure paternelle ambiguë, celle du père harki. Anciens supplétifs de l’armée française, certains harkis sont rapatriés après l’indépendance de l’Algérie dans une France qui refuse de les reconnaître comme citoyens à part entière. Le père harki apparaît dans le récit de Rahmani comme un homme honteux, dont la condition même de père est empêchée par sa honte. Dans cet article, nous analysons le rapport de la narratrice à son père harki à la lumière de la figure d’Antigone. À l’instar de l’héroïne de la tragédie de Sophocle, la narratrice de Moze cherche à relever le père mort, à le ramener du côté de l’humanité et s’emploie à faire pour lui oeuvre de sépulture.In Zahia Rahmani’s first novel Moze, the French author born in Algeria, explores an ambiguous paternal figure: the harki father. Harkis were Muslim Algerian loyalists who served as Auxiliaries in the French Army during the Algerian War. After the independence of Algeria some of them were repatriated in France where they were not considered as full citizens, and, even worse, as fully human. In Rhamani’s novel, the harki father is a shameful man whose fatherhood is impeded by his shame. In this article, we use Antigone’s framework to examine the relationship between the narrator and her harki father. Like the heroine of Sophocle’s tragedy, the narrator of Moze wants to raise a (symbolic) mound for her dead father as a way of assessing his humanity. To do so, the narrator performs “une oeuvre de sépulture,” a kind of burial with words
Ett känslosamt möte : Socialsekreterares känslor och känslohantering kring barn som utsatts för sexuella övergrepp.
No full textTitle: An emotional meeting - The feelings and emotional management of social workers who meet sexually abused children. Education: Social work study program, 210 credits Author: Selma Rahmani och Frida Löhnert Supervisor: Erika Lundby Assessor: Jan Petersson The aim of this study was to investigate the feelings and emotional management of social workers who work, or have been working with sexually abused children. The study was conducted using a qualitative approach through semi-structured interviews with social workers. The social workers that participated in this study have thus had the experience of meeting children who have been sexually abused, and have been working with investigation or in treatment purposes. The selection was based on gaining understanding for the feelings that occur amongst the social workers and the strategies that they use to manage these feelings. The interviews were complemented with previous research in the form of scientific articles and theses. In relation to our theoretical approaches, we could deduce some important conclusions. We were for example able to confirm previous researches regarding the fact that working with sexually abused children is mentally stressful, and that it might be difficult to harbor these feelings. The results also showed that different strategies can be useful to harbor the feelings that arise. Through our analysis, this has been problematized and we have discovered that some of the strategies, especially the ones that are spontaneous or self-chosen, may lead to negative consequences. Keywords: Child sexual abuse, sexualized children, professionals, working with traumatized children, social work, emotional labor, supervision
Dynamic Characteristics of a Finite-Width Journal Bearing Lubricated with Powders
No full textAbstractThis paper attempts to investigate the dynamic characteristics of a powder lubricated journal bearing. The stiffness and damping coefficients are obtained using finite perturbation method. The stability limit of the rotor speed is obtained for a system consisting of a single rotor disc in the middle of a flexible shaft having identical plain cylindrical journal bearings at the ends. The threshold speed of instability for a rotor supported on powder lubricated journal bearing is compared with that of oil lubricated journal bearing. The numerical results show that a rotor supported on powder lubricated journal bearings remains stable for a speed limit much higher than that for oil lubricated bearings
Ett känslosamt möte : Socialsekreterares känslor och känslohantering kring barn som utsatts för sexuella övergrepp.
No full textTitle: An emotional meeting - The feelings and emotional management of social workers who meet sexually abused children. Education: Social work study program, 210 credits Author: Selma Rahmani och Frida Löhnert Supervisor: Erika Lundby Assessor: Jan Petersson The aim of this study was to investigate the feelings and emotional management of social workers who work, or have been working with sexually abused children. The study was conducted using a qualitative approach through semi-structured interviews with social workers. The social workers that participated in this study have thus had the experience of meeting children who have been sexually abused, and have been working with investigation or in treatment purposes. The selection was based on gaining understanding for the feelings that occur amongst the social workers and the strategies that they use to manage these feelings. The interviews were complemented with previous research in the form of scientific articles and theses. In relation to our theoretical approaches, we could deduce some important conclusions. We were for example able to confirm previous researches regarding the fact that working with sexually abused children is mentally stressful, and that it might be difficult to harbor these feelings. The results also showed that different strategies can be useful to harbor the feelings that arise. Through our analysis, this has been problematized and we have discovered that some of the strategies, especially the ones that are spontaneous or self-chosen, may lead to negative consequences. Keywords: Child sexual abuse, sexualized children, professionals, working with traumatized children, social work, emotional labor, supervision
Anatomical Analysis of Human Ligamentum Flavum in the Cervical Spine : Special Consideration to the Attachments, Coverage, and Lateral extent
No full textTrigger Point Theory as Aesthetic Activism
Get PDFTrigger Point Theory as Aesthetic Activism: A Transdisciplinary Approach to Environmental Restoration Aviva A. Rahmani This dissertation presents a new approach to addressing environmental degradation based on transdisciplinary ecological art. Transdisciplinarity is defined here as merging art and science to discover new insights. Ecological art is defined as an aesthetic practice that promotes environmental resilience. This writing will describe why those approaches are essential to restoring resilient bioregionalism. It introduces the author’s own heuristic perspectives and methodologies and demonstrates how they may be integrated with technology and science. The problems of accelerated loss of coastal (littoral) zone biodiversity, degraded water quality, and habitat fragmentation need critical attention. The author’s research goal was to present a replicable set of guidelines for identifying small points of restoration for wetland littoral zones (the coastal region between terrestrial and marine life) based on a case study called Ghost Nets, scaled to a second case study, Fish Story. Her novel approach included establishing relevant parallels from quantum physics and acupuncture to energetic systems. Additional specific analogies were explored from visual arts, theatre, music, dance, and performance art, to discover a holistic and integrated point of view. Parallels and analogies were drawn by interrogating the two case studies. An important aim of the study was to examine how certain restoration practices could be scaled up to the bioregional level and integrated with a special theory, Trigger Point Theory, to reinforce healthy ecosystems. This included an analysis of how restored upland ecotones and a different relationship to other species could contribute to restoration in the littoral zone. The analysis critiqued how anthropocentric considerations often fail to protect vulnerable water systems. The role of environmental justice for vulnerable human populations and ethical concerns for other animal species was included in that analysis. The author also claims that when artists work with Geographic Information Systems (GIS) mapping, that may propel a new transdiscourse and eventually make heuristic information scientifically useful. Insight from the Ghost Nets case study informed data collections and GIS mapping for the Southern Gulf of Maine. Those insights and the mapping were used to analyze relationships between finfish abundance, eelgrass, and invasive, predatory green crabs. Conclusions were drawn that are relevant to coastal and fisheries management practices. The author used performative approaches to contribute expert witnessing to her conclusions. Questionnaires were used to determine how much community awareness was accomplished with the case studies, and assess effects on future behavior. By combining art and science methodologies, the author revealed insights that could help small restored sites act as trigger points towards restoration of healthy bioregional systems more efficiently than would be possible through restoration science alone. In scaling up (applying small models to larger systems) and applying these practices for landscape ecology, the author assembled a set of recommendations for other researchers to implement these ideas in the future. Those recommendations included the formal engagement of ecological artists as equal partners on environmental restoration teams
- …
