366 research outputs found
Importance Sampling for a Markov Modulated Queuing Network with Customer Impatience until the End of Service
No full textFor 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
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
18F-FDG PET/MRI and 18F-FDG PET/CT for the Management of Gynecological Malignancies: A Comprehensive Review of the Literature
No full textObjective: Positron emission tomography with 2-deoxy-2-[fluorine-18] fluoro- D-glucose integrated with computed tomography (18F-FDG PET/CT) or magnetic resonance imaging (18F-FDG PET/MRI) has emerged as a promising tool for managing various types of cancer. This review study was conducted to investigate the role of 18F- FDG PET/CT and FDG PET/MRI in the management of gynecological malignancies. Search strategy: We searched for relevant articles in the three databases PubMed/MEDLINE, Scopus, and Web of Science. Selection criteria: All studies reporting data on the FDG PET/CT and FDG PET MRI in the management of gynecological cancer, performed anywhere in the world and published exclusively in the English language, were included in the present study. Data collection and analysis: We used the EndNote software (EndNote X8.1, Thomson Reuters) to list the studies and screen them on the basis of the inclusion criteria. Data, including first author, publication year, sample size, clinical application, imaging type, and main result, were extracted and tabulated in Excel. The sensitivity, specificity, and diagnostic accuracy of the modalities were extracted and summarized. Main results: After screening 988 records, 166 studies published between 2004 and 2022 were included, covering various methodologies. Studies were divided into the following five categories: the role of FDG PET/CT and FDG-PET/MRI in the management of: (a) endometrial cancer (n = 30); (b) ovarian cancer (n = 60); (c) cervical cancer (n = 50); (d) vulvar and vagina cancers (n = 12); and (e) gynecological cancers (n = 14). Conclusions: FDG PET/CT and FDG PET/MRI have demonstrated potential as non-invasive imaging tools for enhancing the management of gynecological malignancies. Nevertheless, certain associated challenges warrant attention
Telle Antigone, relever le père harki. Le récit comme sépulture dans Moze de Zahia Rahmani
No full textMoze, 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
Diagnosis of Cervical Cancer and Pre-Cancerous Lesions by Artificial Intelligence: A Systematic Review
No full textObjective: The likelihood of timely treatment for cervical cancer increases with timely detection of abnormal cervical cells. Automated methods of detecting abnormal cervical cells were established because manual identification requires skilled pathologists and is time consuming and prone to error. The purpose of this systematic review is to evaluate the diagnostic performance of artificial intelligence (AI) technologies for the prediction, screening, and diagnosis of cervical cancer and pre-cancerous lesions. Materials and Methods: Comprehensive searches were performed on three databases: Medline, Web of Science Core Collection (Indexes = SCI-EXPANDED, SSCI, A & HCI Timespan) and Scopus to find papers published until July 2022. Articles that applied any AI technique for the prediction, screening, and diagnosis of cervical cancer were included in the review. No time restriction was applied. Articles were searched, screened, incorporated, and analyzed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Results: The primary search yielded 2538 articles. After screening and evaluation of eligibility, 117 studies were incorporated in the review. AI techniques were found to play a significant role in screening systems for pre-cancerous and cancerous cervical lesions. The accuracy of the algorithms in predicting cervical cancer varied from 70% to 100%. AI techniques make a distinction between cancerous and normal Pap smears with 80–100% accuracy. AI is expected to serve as a practical tool for doctors in making accurate clinical diagnoses. The reported sensitivity and specificity of AI in colposcopy for the detection of CIN2+ were 71.9–98.22% and 51.8–96.2%, respectively. Conclusion: The present review highlights the acceptable performance of AI systems in the prediction, screening, or detection of cervical cancer and pre-cancerous lesions, especially when faced with a paucity of specialized centers or medical resources. In combination with human evaluation, AI could serve as a helpful tool in the interpretation of cervical smears or images
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
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 textComparison of Hospitalized Adolescents' Satisfaction of Clinical Services and Physical Environment in Children and Adults’ Wards in Isfahan in 2009
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