1,879 research outputs found
Source Behavior for ATM ABR Traffic Management: An Explanation
The Available Bit Rate (ABR) service has been developed to support data
applications over Asynchronous Transfer Mode (ATM) networks. The network
continuously monitors its traffic and provides feedback to the source end
systems. This paper explains the rules that the sources have to follow to
achieve a fair and efficient allocation of network resources.Comment: IEEE Communications Magazine, November 1, 1996, vol 34, no11, pp50-5
The Exposure to Animated Movies and Constructing Adolescents’ Perception towards Gender Role
This study aims to know the Egyptian adolescents’ perception towards gender roles; coinciding with the evolution of the female lead animated movies. Being affected by the third and the fourth wave of feminism in American society and its effect on Egyptian adolescents; since animated movies are mainly American produced. The study found that Egyptian adolescents perceive the female role in the society to be independent decision-maker and has her own rights, reassuring that women hold much more work-load than men and her biggest enemy and fighter is the society itself, not her capabilities, while animation movies from 2012 till 2018 hold more muscular personality traits and behavioral traits than feminine ones
Will cool roofs improve the thermal performance of our built environment? A study assessing roof systems in Bahrain
A number of international campaigns have recently proposed the use of cool roofs worldwide in order to cope with the summer urban heat island (UHI) effect. This work investigates cool roof strategy and examines the potential of such a strategy for Bahrain. Full-scale measurement, meteorological modelling and thermal simulation of five standard roofs were performed during particular summer days due to the high intensity levels of solar irradiation. This work shows that the light tile roof and metal decking are relatively cooler and more comfortable than others and that the maximum reduction in heat gain occurs for a light tile roof with thermal insulation materials. Nevertheless, without insulation the cooling load is increased by only 1.3%. This percentage seems not to be cost-effective where economics and building construction are concerned. In contrast, the reduction percentage due to the use of thermal insulation in the case of dark tile roof, felt bitumen roof and screed roof increases to 5–7%, which is more cost effective. This work concludes that the cool roof strategy is the most cost-effective for the hot climate of Bahrain, which has a long cooling season. With the current levels of urban development in Bahrain, cool roofs can reduce UHI intensity and building cooling loads, lowering demand for electricity and greenhouse gas emissions from power plants. To avoid any negative consequences from using this strategy, however, trade-offs between urban mitigation and adoptation strategies and complementary technologies should be accounted for in future urban development plans
An Enhanced Robot Massage System in Smart Homes Using Force Sensing and a Dynamic Movement Primitive
With requirements to improve life quality, smart homes, and healthcare have gradually become a future lifestyle. In particular, service robots with human behavioral sensing for private or personal use in the home have attracted a lot of research attention thanks to their advantages in relieving high labor costs and the fatigue of human assistance. In this paper, a novel force-sensing- and robotic learning algorithm-based teaching interface for robot massaging has been proposed. For the teaching purposes, a human operator physically holds the end-effector of the robot to perform the demonstration. At this stage, the end position data are outputted and sent to be segmented via the Finite Difference (FD) method. A Dynamic Movement Primitive (DMP) is utilized to model and generalize the human-like movements. In order to learn from multiple demonstrations, Dynamic Time Warping (DTW) is used for the preprocessing of the data recorded on the robot platform, and a Gaussian Mixture Model (GMM) is employed for the evaluation of DMP to generate multiple patterns after the completion of the teaching process. After that, a Gaussian Mixture Regression (GMR) algorithm is applied to generate a synthesized trajectory to minimize position errors. Then a hybrid position/force controller is integrated to track the desired trajectory in the task space while considering the safety of human-robot interaction. The validation of our proposed method has been performed and proved by conducting massage tasks on a KUKA LBR iiwa robot platform
Life on a low income in austere times
Following the ‘credit crunch’ 2007-2008, the UK entered the deepest recessionary conditions in living memory. As the liquidity from the financial services sector came to an abrupt halt, the investment ‘life blood’ of the economy in short supply, numerous companies, including long established high street businesses, ceased trading and consequently, unemployment rates rose to the highest levels since the 1980s. After the initial ‘bailout’ of the banking sector, political attention turned to the growing public deficit and the spectre of public sector austerity came to dominate the policy agenda. This agenda swiftly moved from how best to regulate the financial services industry to the question of the ‘welfare bill’ and the growing problem of ‘worklessness’. From this point, particularly as the Universal Credit Scheme passed through parliament and came to be implemented in various phases, much was said in political and policy debates about the lives of the ‘poor’ and many ‘common sense’ assumptions informed these discussions. However as is often the case, omitted from these discussions were the voices of those people living of low income. To redress this imbalance, the report aims to document the reality of life on a low income during this period, by affording primacy to the ‘voices’ of those living in poverty
Securing the Youth Vote: A Comparative Analysis of Digital Persuasion on TikTok Among Political Actors
In the context of "pop politics" and "politainment," the irruption of TikTok has changed the landscape of social media and become the fastest-growing application among young people. Based on the peculiarities of the social platform's affordances and the political personalization approach, we explore the differences between political parties and political leaders in terms of digital persuasion on TikTok in Spain and Poland. This work contributes to the scarce knowledge about the strategic use of TikTok for political purposes. It also attempts to fill the gap in the comparative research into the practical uses of TikTok in different political contexts. The study explores the three classical persuasion appeals - pathos, ethos, and logos - based on a visual, quantitative analysis of N = 372 videos posted on the official TikTok profiles of the main political parties and leaders from January 1st to March 31st, 2022. Differences were found in how political parties and political leaders used TikTok's affordances as well as in the main rhetorical resource they use to persuade. We noted the use of more rational resources (logos) in the case of political parties and more emotional resources (pathos) for political leaders. Further, the rare presence of the personality in the videos of the political actors (ethos), along with their unusual privatization role, indicate that personalization on TikTok is far from being considered as part of their digital persuasion strategy
A comparison of two methods of assessing the potential clinical importance of medication errors
BACKGROUND: A wide range of methods have been used to assess the potential clinical importance of medication errors, but it is neither clear which should be used, nor how they compare. In this paper, we compare two methods of assessment, using a dataset of errors identified in the administration of intravenous infusions in English hospitals, to inform future comparisons between studies. METHODS: We assessed each of 155 errors identified in a study of intravenous infusion administration using two commonly used methods: an adapted form of the National Coordinating Council for Medication Error Reporting and Prevention (NCC MERP) method (an ordinal scale scored by local clinicians) and the Dean and Barber method (an interval scale ranging from 0 to 10 scored by a group of experts). We compared the two sets of scores using a scatter plot and calculated Spearman’s correlation coefficient. RESULTS: Using the NCC MERP method, 137 (88%) errors were rated C (‘an error occurred but was unlikely to cause harm despite reaching the patient’), 17 (11%) rated D (‘an error occurred that would be likely to have required increased monitoring’) and 1 (1%) rated E (‘an error occurred that would be likely to have caused temporary harm’). Errors ranged from 0 to 4.75 on the Dean and Barber scale with a mean of 1.7; 138 (89%) of errors were considered minor (scores of less than 3) and 17 (11%) as moderate (scores 3–7). Scores from the two methods were significantly but weakly correlated (correlation coefficient = 0.36, p = < 0.01). CONCLUSION: Scores from the adapted NCC MERP and Dean and Barber methods are only weakly correlated in the assessment of medication administration errors. In the absence of a uniformly agreed standard method for assessing errors’ clinical importance, researchers should be aware that comparisons between studies are likely to have limitations
Fahmy's four quadrant sutures: a new technique for control of blood loss during cesarean delivery for placenta previa
Background: The objective of this study is to assess the efficacy and safety of Fahmy's four quadrant suture technique (FFQS) in controlling blood loss during cesarean delivery for placenta previa (PP).Methods: The study was carried out in a tertiary University Hospital between January 2017 to December 2017 involved 12 women with heavy bleeding occurred after removal of the placenta from the lower section during cesarean delivery for PP. The FFQS technique consisted of two sutures to ligate the uterine branches on both sides and two sutures on the anterior and posterior wall of the lower uterine segment. Details regarding the management and maternal outcomes were recorded.Results: The mean age of the study participants was 29.58±5.29 years and the mean parity was 2.25±1.14. The mean gestational age at termination of pregnancy was 36.91±1.38 weeks. The mean duration of the whole surgery was 78.75±43.28 minutes, while the mean duration of FFQS technique was only 10±2.09 minutes. The technique was exclusively effective in 8 out of 12 cases (66.67%) while 2 cases needed bilateral internal iliac artery ligation and 2 cases needed hysterectomy. The mean amount of blood loss in all cases was 2433.33±833.76 ml. the mean amount of transfused packed RBCs was 3.92±1.68 units and fresh frozen plasma (FFP) was 3.42±1.44 units. All cases had uneventful postoperative course and no mortality cases in present series.Conclusions: The new technique; FFQS represents a rapid, effective, and inexpensive opportunity for women with bleeding from the lower segment of uterus due to PP. This simple procedure should be attempted before other complex measures to achieve good hemostasis
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