Hasil untuk "cs.OH"

Menampilkan 20 dari ~363860 hasil · dari DOAJ, arXiv, CrossRef

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CrossRef Open Access 2024
Liver Dysfunction in a Patient with Graves’ Disease

Filipa Campos, Angelica Sharma, Bijal Patel et al.

Liver dysfunction can occur in patients presenting with thyrotoxicosis, due to several different aetiologies. A 42-year-old man had mild liver dysfunction on presentation with hyperthyroidism due to Graves’ disease (GD): ALT 65 (0–45 IU/L), fT4 41.2 (9–23 pmol/L), fT3 > 30.7 (2.4–6 pmol/L), and TSH < 0.01 (0.3–4.2 mIU/L). His liver dysfunction worsened following the initiation of the antithyroid drug (ATD) carbimazole (CBZ), with ALT reaching a zenith of 263 IU/L at 8 weeks following presentation. Consequently, CBZ was stopped, and he was managed with urgent radioiodine therapy. His liver function tests (LFTs) improved within 1 week of stopping carbimazole (ALT 74 IU/L). Thionamide-induced liver dysfunction is more typically associated with a ‘cholestatic’ pattern, although he had a ‘hepatitic’ pattern of liver dysfunction. The risk of liver dysfunction in GD increases with older age and higher titres of thyroid-stimulating hormone receptor antibody (TRAb). This review of the literature seeks to explore the possible causes of liver dysfunction in a patient presenting with hyperthyroidism, including thyrotoxicosis-induced liver dysfunction, ATD-related liver dysfunction, and the exacerbation of underlying unrelated liver disease.

arXiv Open Access 2020
Two-stage optimization of urban rail transit formation and real-time station control at comprehensive transportation hub

Hualing Ren, Yingjie Song, Shubin Li

This paper tries to discuss two strategies of dealing with this complex passenger demand from two aspects: transit train formation and real-time holding control. The genetic algorithm (GA) is designed to solve the integrated two-stage model of optimizing the number, timetable and real-time holding control of the multi-marshalling operated trains. The numerical results show that the combined two-stage model of multi-marshalling operation and holding control at stations can better deal with the demand fluctuation of urban rail transit connecting with the comprehensive transportation hub.

en cs.OH
arXiv Open Access 2019
Teleporting digital images

Mario Mastriani

During the last 25 years the scientific community has coexisted with the most fascinating protocol due to Quantum Physics: quantum teleportation (QTele), which would have been impossible if quantum entanglement, so questioned by Einstein, did not exist. In this work, a complete architecture for the teleportation of Computational Basis States (CBS) is presented. Such CBS will represent each of the possible 24 classical bits commonly used to encode every pixel of a 3-color-channel-image (red-green-blue, or cyan-yellow-magenta). For this purpose, a couple of interfaces: classical-to-quantum (Cl2Qu) and quantum-to-classical (Qu2Cl) are presented with two versions of the teleportation protocol: standard and simplified.

en cs.OH
arXiv Open Access 2019
Inquiry of P-reduction in Cook's 1971 Paper -- from Oracle machine to Turing machine

JianMing Zhou, Yu Li

In this paper, we inquire the key concept P-reduction in Cook's theorem and reveal that there exists the fallacy of definition in P-reduction caused by the disguised displacement of NDTM from Oracle machine to Turing machine. The definition or derivation of P-reduction is essentially equivalent to Turing's computability. Whether NP problems might been reduced to logical forms (tautology or SAT) or NP problems might been reduced each other, they have not been really proven in Cook's 1971 paper.

en cs.OH
arXiv Open Access 2019
Algorithmic measurement procedures

Aldo F. G. Solis-Labastida, Jorge G. Hirsch

Measurements are shown to be processes designed to return figures: they are effective. This effectivity allows for a formalization as Turing machines, which can be described employing computation theory. Inspired in the halting problem we draw some limitations for measurement procedures: procedures that verify if a quantity is measured cannot work in every case.

arXiv Open Access 2017
Project Makespan Estimation: Computational Load of Interval and Point Estimates

Maurizio Naldi, Marta Flamini

The estimation of project completion time is to be repeated several times in the project planning phase to reach the optimal tradeoff between time, cost, and quality. Estimation procedures provide either an interval or a point estimate. The computational load of several estimation procedures is reviewed. A multiple polynomial regression model is provided for major interval estimation procedures and shows that the accuracy in the probability model for activities is the most influential factor. The computational time does not appear to be an impeding factor, though it is larger for MonteCarlo simulation, so that the computational time can be traded off in search of a simpler estimation procedure.

en cs.OH
arXiv Open Access 2017
Taxi-based Emergency Medical System

Li-Yi Lin

In case of a severe accident, the key to saving lives is the time between the incident and when the victim receives treatment from the first-responders. In areas with well designed emergency medical systems, the time for an ambulance to arrive at the accident location is often not too long. However, in many low and middle income countries, it usually takes much longer for an ambulance to arrive at the accident location due to lack of proper services. On the other hand, with ubiquitous wireless connectivity, and emergence of radio based taxis, it seems feasible to build a low-cost emergency response system based on taxi service. In this report, we explore one such solution for deployment of a taxi-based emergency response systems using reinforcement learning.

en cs.OH
arXiv Open Access 2017
Customized Routing Optimization Based on Gradient Boost Regressor Model

Chen Zheng, Clara Grzegorz Kasprowicz, Carol Saunders

In this paper, we discussed limitation of current electronic-design-automoation (EDA) tool and proposed a machine learning framework to overcome the limitations and achieve better design quality. We explored how to efficiently extract relevant features and leverage gradient boost regressor (GBR) model to predict underestimated risky net (URN). Customized routing optimizations are applied to the URNs and results show clear timing improvement and trend to converge toward timing closure.

en cs.OH, cs.LG
arXiv Open Access 2015
Predictive and statistical analyses for academic advisory support

Mohammed Al-Sarem

The ability to recognize weakness of students and solving any problem may confront them in timely fashion is always a target of all educational institutions. This study was designed to explore how can predictive and statistical analysis support the academic work of adviser mainly in analysis progress of students . The sample consisted of a total of 249 undergraduate students: 46 % of them were Female and 54% Male. A one-way analysis of variance and t-test were conducted to analysis if there was different behavior in registering courses. Predictive data mining is used for support adviser in decision making. Several classification techniques with 10-fold Cross validation were applied. Among of them, C 4.5 constitutes the best agreement among the finding results.

en cs.OH
arXiv Open Access 2014
Revised Version of a JCIT Paper-Comparison of Feature Point Extraction Algorithms for Vision Based Autonomous Aerial Refueling

Borui Li, Chundi Mu, Tao Wang et al.

This is a revised version of our paper published in Journal of Convergence Information Technology(JCIT): "Comparison of Feature Point Extraction Algorithms for Vision Based Autonomous Aerial Refueling". We corrected some errors including measurement unit errors, spelling errors and so on. Since the published papers in JCIT are not allowed to be modified, we submit the revised version to arXiv.org to make the paper more rigorous and not to confuse other researchers.

arXiv Open Access 2013
Wireless Computing and IT Ecosystems

William R Simpson

We have evolved an IT system that is ubiquitous and pervasive and integrated into most aspects of our lives. Many of us are working on 4th and 5th level refinements in efficiency and functionality. But, we stand on the shoulders of those who came before and this restricts our freedom of action. The prior work has left us with an ecosystem which is the living embodiment of our state-of-the-art. While we work on integration, refinement, broader application and efficiency, the results must move seamlessly into the ecosystem. Fundamental concepts are being researched in the lab and may rebuild the world we all live in, until that happens, we must work within the ecosystem.

en cs.OH
arXiv Open Access 2012
Design For Change: Information-Centric Architecture to Support Agile Disaster Response

Yan Shvartzshnaider, Maximilian Ott

This paper presents a case for the adoption of an information-centric architecture for a global disaster management system. Drawing from a case study of the 2010/2011 Queensland floods, we describe the challenges in providing every participant with relevant and actionable information. We use various examples to argue for a more flexible information dissemination framework which is designed from the ground up to minimise the effort needed to fix the unexpected and unavoidable information acquisition, quality, and dissemination challenges posed by any real disaster.

en cs.OH
arXiv Open Access 2011
Book review: Katy Börner, Atlas of Science: Visualizing What We Know. Cambridge, MA/ London UK: The MIT Press, 2010

Loet Leydesdorff

Katy Börner has written a wonderful book about visualization that makes our field of scientometrics accessible to much larger audiences. The book is to be read in relation to the ongoing series of exhibitions entitled "Places & Spaces: Mapping Science" currently touring the world. The book also provides the scholarly background to the exhibitions. It celebrates scientometrics as the discipline in the background that enables us to visualize the evolution of knowledge as the acumen of human civilization.

en cs.OH
arXiv Open Access 2011
Classification of Emergency Scenarios

Mathieu Muench

In most of today's emergency scenarios information plays a crucial role. Therefore, information has to be constantly collected and shared among all rescue team members and this requires new innovative technologies. In this paper a classification of emergency scenarios is presented, describing their special characteristics and common strategies employed by rescue units to handle them. Based on interviews with professional firefighters, requirements for new systems are listed. The goal of this article is to support developers designing new systems by providing them a deeper look into the work of first responders.

en cs.OH
arXiv Open Access 2010
Wireless IP Telephony

Mohsen Gerami

The convergence of traditional telecommunications and the Internet is creating new network-based service delivery opportunities for telecommunications companies carriers, service providers, and network equipment providers. Voice over Wireless IP is one of the most exciting new developments emerging within the telephony market. It is set to revolutionize the delivery of mobile voice Services and provide exciting new opportunities for operators and service providers alike. This survey discusses principal of Wireless IP Telephony.

en cs.OH
arXiv Open Access 2009
Output Width Signal Control In Asynchronous Digital Systems Using Monostable Circuits

Mihai Timis

In present paper, I propose a method for resolving the timing delays for output signals from an asynchronous sequential system. It will be used an example of an asynchronous sequential system that will set up an output signal when an input signal will be set up. The width of the output signal depends on the input signal width, and in this case it is very short. There are many synthesis methods, like using a RC group system, a monostable system in design of the asynchronous digital system or using an external clock signal, CK. In this paper will be used a monostable circuit.

en cs.OH
arXiv Open Access 2009
XML Technologies in Computer Assisted Learning and Testing Systems

Adrian Cojocariu, Cristina Ofelia Stanciu

The learning and assessment activities have undergone major changes due to the development of modern technologies. The computer-assisted learning and testing has proven a number of advantages in the development of modern educational system. The paper suggests a solution for the computer-assisted testing, which uses XML technologies, a solution that could make the basis for developing a learning computer-assisted system.

en cs.OH
arXiv Open Access 2008
Top-Down Behavioral Modeling Methodology of a Piezoelectric Microgenerator For Integrated Power Harvesting Systems

Hela Boussetta, S. Basrour, M. Marzencki

In this study, we developed a top/down methodology for behavioral and structural modeling of multi-domain microsystems. Then, we validated this methodology through a study case : a piezoelectric microgenerator. We also proved the effectiveness of VHDL-AMS language not only for modeling in behavioral and structural levels but also in writing physical models that can predict the experimental results. Finally, we validated these models by presenting and discussing simulations results.

en cs.OH
arXiv Open Access 2008
Design and Fabrication of a Novel Micro Electromagnetic Actuator

C. -Y. Lee, Zgen-Hui Chen, Hsien-Tseng Chang et al.

The present study presents a new micro electromagnetic actuator utilizing a PDMS membrane with a magnet. The actuator is integrated with micro coils to electromagnetically actuate the membrane and results in a large deflection. The micro electromagnetic actuator proposed in this study is easily fabricated and is readily integrated with existing bio-medical chips due to its planar structure.

en cs.OH

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