979 research outputs found
Model and Integrate Medical Resource Available Times and Relationships in Verifiably Correct Executable Medical Best Practice Guideline Models (Extended Version)
Improving patient care safety is an ultimate objective for medical
cyber-physical systems. A recent study shows that the patients' death rate is
significantly reduced by computerizing medical best practice guidelines. Recent
data also show that some morbidity and mortality in emergency care are directly
caused by delayed or interrupted treatment due to lack of medical resources.
However, medical guidelines usually do not provide guidance on medical resource
demands and how to manage potential unexpected delays in resource availability.
If medical resources are temporarily unavailable, safety properties in existing
executable medical guideline models may fail which may cause increased risk to
patients under care. The paper presents a separately model and jointly verify
(SMJV) architecture to separately model medical resource available times and
relationships and jointly verify safety properties of existing medical best
practice guideline models with resource models being integrated in. The SMJV
architecture allows medical staff to effectively manage medical resource
demands and unexpected resource availability delays during emergency care. The
separated modeling approach also allows different domain professionals to make
independent model modifications, facilitates the management of frequent
resource availability changes, and enables resource statechart reuse in
multiple medical guideline models. A simplified stroke scenario is used as a
case study to investigate the effectiveness and validity of the SMJV
architecture. The case study indicates that the SMJV architecture is able to
identify unsafe properties caused by unexpected resource delays.Comment: full version, 12 page
Implementation of Real-Time Machining Process Control Based on Fuzzy Logic in a New STEP-NC Compatible System
Implementing real-time machining process control at shop floor has great significance on raising the efficiency and quality of product manufacturing. A framework and implementation methods of real-time machining process control based on STEP-NC are presented in this paper. Data model compatible with ISO 14649 standard is built to transfer high-level real-time machining process control information between CAPP systems and CNC systems, in which EXPRESS language is used to define new STEP-NC entities. Methods for implementing real-time machining process control at shop floor are studied and realized on an open STEP-NC controller, which is developed using object-oriented, multithread, and shared memory technologies conjunctively. Cutting force at specific direction of machining feature in side mill is chosen to be controlled object, and a fuzzy control algorithm with self-adjusting factor is designed and embedded in the software CNC kernel of STEP-NC controller. Experiments are carried out to verify the proposed framework, STEP-NC data model, and implementation methods for real-time machining process control. The results of experiments prove that real-time machining process control tasks can be interpreted and executed correctly by the STEP-NC controller at shop floor, in which actual cutting force is kept around ideal value, whether axial cutting depth changes suddenly or continuously
Abnormal Shape Mould Winding
AbstractA theory of composite material patch winding is proposed to determine the winding trajectory with a meshed data model. Two different conditions are considered in this study. One is Bridge condition on the concave surface and the other is Slip line condition in the process of patch winding. This paper presents the judgment principles and corresponding solutions by applying differential geometry theory and space geometry theory. To verify the feasibility of the patch winding method, the winding control code is programmed. Furthermore, the winding experiments on an airplane inlet and a vane are performed. From the experiments, it shows that the patch winding theory has the advantages of flexibility, easy design and application
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What factors determine the success and failure of innovation in China? A systemic study of the Chinese mining industry
China's economy has enjoyed rapid development in recent decades. Its achievements in
innovation, however, are far from satisfactory. So why is it the case that innovation has
not followed? The mining industry is chosen as the research target. Above all, it is
indispensable for China's future energy security and some materials can be used and
have no replacement for the manufacture of a constellation of high-tech products.
Secondly, mining is a difficult case for the study of innovation. Finally, this study is
located at the overlap between development studies and political economy.
This research adopts a qualitative method. Its aim is to find the mechanism through
which innovation outcomes can be determined as the qualitative method can be
beneficial in presenting such a mechanism clearly. The data is collected mainly through
interviews. This research is first illuminated by System of Innovation(SI) theory. SI views
concrete innovations as the outcome of a System. This research adopts the Triple Helix
approach to organise interviews and conduct fieldwork. This approach focuses upon the
interaction of universities, governments and industries. The Innovation Ecosystem is
also utilised to produce systemic research results.
The empirical finding of the research recognises that, compared with the prospecting
and manufacturing stages, the mining and mineral processing stages are more
innovative. One theoretical finding is that the triple helix displays in different forms
under different circumstances.
More work ought to be done to further discern and update the evolution of a
Chinese National System of Innovation and a comparison of the different forms of
Triple Helix is also a rich vein for scholars
Dasatinib-loaded Albumin Nanoparticles Possess Diminished Endothelial Cell Barrier Disruption and Retain Potent Anti-Leukemia Cell Activity
Dasatinib (DAS), a second-generation tyrosine kinase inhibitor, is highly effective in treating chronic myeloid leukemia and Philadelphia chromosome-positive acute lymphoblastic leukemia. However, its clinical use is limited due to serious adverse effects. DAS can disrupt endothelial barrier integrity and increase endothelial permeability which may cause peripheral edema and pleural effusion. Albumin nanoparticles (NPs) as a drug carrier may serve as a useful tool for cell-selective drug delivery to reduce DAS-induced endothelial hyperpermeability and maintain endothelial barrier integrity. In this study, we reported that DAS-loaded NPs exhibited potent anti-leukemia efficacy as DAS alone. Importantly, albumin NPs as a drug carrier markedly reduced DAS-induced endothelial hyperpermeability by restraining the inhibition of Lyn kinase signaling pathway in endothelial cells. Therefore, albumin NPs could be a potential tool to improve anti-leukemia efficacy of DAS through its cell-selective effects
Deeply Virtual Compton Scattering at Future Electron-Ion Colliders
The study of hadronic structure has been carried out for many years.
Generalized parton distribution functions (GPDs) give broad information on the
internal structure of hadrons. Combining GPDs and high-energy scattering
experiments, we expect yielding three-dimensional physical quantities from
experiments. Deeply Virtual Compton Scattering (DVCS) process is a powerful
tool to study GPDs. It is one of the important experiments of Electron Ion
Collider (EIC) and Electron ion collider at China (EicC) in the future. In the
initial stage, the proposed EicC will have GeV polarized electrons
on GeV polarized protons, with luminosity up to cms. EIC will be constructed in coming years, which will
cover the variable c.m. energies from 30 to 50 GeV, with the luminosity about
cms. In this work we present a detailed
simulation of DVCS to study the feasibility of experiments at EicC and EIC.
Referring the method used by HERMES Collaboration, and comparing the model
calculations with pseudo data of asymmetries attributed to the DVCS, we
obtained a model-dependent constraint on the total angular momentum of up and
down quarks in the proton.Comment: 12 pages, 18 figures, 3 Table
Improvements on Recommender System based on Mathematical Principles
In this article, we will research the Recommender System's implementation
about how it works and the algorithms used. We will explain the Recommender
System's algorithms based on mathematical principles, and find feasible methods
for improvements. The algorithms based on probability have its significance in
Recommender System, we will describe how they help to increase the accuracy and
speed of the algorithms. Both the weakness and the strength of two different
mathematical distance used to describe the similarity will be detailed
illustrated in this article
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