scholarly journals Improving Dependability via Deadline Guarantees in Commodity Real-time Networks

2020 ◽  
Author(s):  
Ashish Kasinath ◽  
Monowar Hasan ◽  
Sibin Mohan ◽  
Rakesh B Bobba ◽  
Radhika Mittal
Keyword(s):  
Real Time ◽  
Network Robustness ◽  
Root Cause ◽  
Deterministic Algorithms ◽  
Global View ◽  
Network Utilization ◽  
High Utilization ◽  
Priority Schemes ◽  
Stringent Quality

Software-defined Networking (SDN) can facilitate the deployment of deterministic algorithms with stringent Quality of Service (QoS) requirements that pave the way for commodity Real-time (RT) networks. However, current QoS approaches are conservative and under-provision the network, that becomes a bottleneck when scaling or upgrading infrastructure. In this paper, we argue that the use of fixed priorities for flows – a common practice in RT networks, is the root-cause of this issue. We develop algorithms that use the global view provided by SDN to develop on-demand, variable priority schemes. Evaluation shows that this “correct by construction” approach increases network utilization while still meeting the necessary QoS requirements, thereby improving network robustness under high utilization.

scholarly journals Improving Dependability via Deadline Guarantees in Commodity Real-time Networks

2020 ◽  
Author(s):  
Ashish Kasinath ◽  
Monowar Hasan ◽  
Sibin Mohan ◽  
Rakesh B Bobba ◽  
Radhika Mittal
Keyword(s):  
Real Time ◽  
Network Robustness ◽  
Root Cause ◽  
Deterministic Algorithms ◽  
Global View ◽  
Network Utilization ◽  
High Utilization ◽  
Priority Schemes ◽  
Stringent Quality

Software-defined Networking (SDN) can facilitate the deployment of deterministic algorithms with stringent Quality of Service (QoS) requirements that pave the way for commodity Real-time (RT) networks. However, current QoS approaches are conservative and under-provision the network, that becomes a bottleneck when scaling or upgrading infrastructure. In this paper, we argue that the use of fixed priorities for flows – a common practice in RT networks, is the root-cause of this issue. We develop algorithms that use the global view provided by SDN to develop on-demand, variable priority schemes. Evaluation shows that this “correct by construction” approach increases network utilization while still meeting the necessary QoS requirements, thereby improving network robustness under high utilization.

SDVoIP—A Software-Defined VoIP Framework For SIP And Dynamic QoS

2020 ◽  
Author(s):  
Rahil Gandotra ◽  
Levi Perigo
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Packet Loss ◽  
Voice Over Internet Protocol ◽  
Call Routing ◽  
Global View ◽  
Sip Proxy ◽  
Control Application ◽  
Sdn Controller

Abstract Software-defined networking (SDN) allows for the decoupling of the control and data planes, enabling more programmability and a global view of the network. Previous research indicates that traditional applications recreated using SDN principles allow for more granularity and customization. In this research, we extend the insights behind SDN to develop a Voice over Internet Protocol (VoIP) framework with the objective to enhance traditional Session Initiation Protocol (SIP) operation and quality of service (QoS) approaches. The contributions of this research are 2-fold: first, an SIP control application is implemented, which communicates with an SDN controller to provide VoIP call registration and call routing capabilities, thereby eliminating the need for specialized SIP proxy hardware devices; second, a dynamic QoS application is developed that provides the ability to make network-wide QoS decisions based on real-time network measurements of latency, bandwidth and packet loss. Functional validation of the framework is performed to verify its operation. The experiment results indicate that the proposed framework allows for enhancements to traditional QoS implementations.

Development and Application of Quality Control System for Highway Subgrade Construction

2019 ◽  
Vol 2 (5) ◽  
Author(s):  
Tong Wang
Keyword(s):  
Quality Control ◽  
Real Time ◽  
Detection Method ◽  
System Development ◽  
Effective Control ◽  
Construction Process ◽  
Development Mode ◽  
The Road ◽  
Whole Process

The compaction quality of the subgrade is directly related to the service life of the road. Effective control of the subgrade construction process is the key to ensuring the compaction quality of the subgrade. Therefore, real-time, comprehensive, rapid and accurate prediction of construction compaction quality through informatization detection method is an important guarantee for speeding up construction progress and ensuring subgrade compaction quality. Based on the function of the system, this paper puts forward the principle of system development and the development mode used in system development, and displays the development system in real-time to achieve the whole process control of subgrade construction quality.

CONTROL IN REAL TIME THE DENSITY OF PRODUCT AT VARIOUS STAGES OF THE TECHNOLOGICAL PROCESS OF SUGAR PRODUCTION

2020 ◽  
Author(s):  
S.B. Kudryashev ◽  
◽  
N.S. Assev ◽  
R.D. Belashov ◽  
V.A. Naumenko ◽  
...  
Keyword(s):  
Real Time ◽  
Technological Process ◽  
Sugar Industry ◽  
Sugar Production ◽  
Production Processes ◽  
Quality Of Products

The article is devoted to solving one of the most important problems of the development of the sugar industry in Russia – the modernization of sugar production processes. Today, sugar production is actively being modernized, shifting most of its processes to the path of avomatization and optimization to improve the quality of products. This article describes one of the main ways to obtain information about the concentration of sucrose in syrup in the production of sugar.

What's my App?

2021 ◽  
Vol 48 (4) ◽  
pp. 41-44
Author(s):  
Dena Markudova ◽  
Martino Trevisan ◽  
Paolo Garza ◽  
Michela Meo ◽  
Maurizio M. Munafo ◽  
...  
Keyword(s):  
Machine Learning ◽  
Natural Language Processing ◽  
Real Time ◽  
Language Processing ◽  
Traffic Management ◽  
Quality Of Experience ◽  
Broadband Internet ◽  
Management Policies ◽  
Control Traffic

With the spread of broadband Internet, Real-Time Communication (RTC) platforms have become increasingly popular and have transformed the way people communicate. Thus, it is fundamental that the network adopts traffic management policies that ensure appropriate Quality of Experience to users of RTC applications. A key step for this is the identification of the applications behind RTC traffic, which in turn allows to allocate adequate resources and make decisions based on the specific application's requirements. In this paper, we introduce a machine learning-based system for identifying the traffic of RTC applications. It builds on the domains contacted before starting a call and leverages techniques from Natural Language Processing (NLP) to build meaningful features. Our system works in real-time and is robust to the peculiarities of the RTP implementations of different applications, since it uses only control traffic. Experimental results show that our approach classifies 5 well-known meeting applications with an F1 score of 0.89.

Health Care Utilization, Transition Readiness, and Quality of Life: A Latent Class Analysis

2020 ◽  
Author(s):  
Katherine A Traino ◽  
Christina M Sharkey ◽  
Megan N Perez ◽  
Dana M Bakula ◽  
Caroline M Roberts ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Health Care ◽  
Health Care Utilization ◽  
Latent Class Analysis ◽  
Latent Class ◽  
Care Utilization ◽  
Class Membership ◽  
Transition Readiness ◽  
High Utilization

Abstract Objective To identify possible subgroups of health care utilization (HCU) patterns among adolescents and young adults (AYAs) with a chronic medical condition (CMC), and examine how these patterns relate to transition readiness and health-related quality of life (HRQoL). Methods Undergraduates (N = 359; Mage=19.51 years, SD = 1.31) with a self-reported CMC (e.g., asthma, allergies, irritable bowel syndrome) completed measures of demographics, HCU (e.g., presence of specialty or adult providers, recent medical visits), transition readiness, and mental HRQoL (MHC) and physical HRQoL (PHC). Latent class analysis identified four distinct patterns of HCU. The BCH procedure evaluated how these patterns related to transition readiness and HRQoL outcomes. Results Based on seven indicators of HCU, a four-class model was found to have optimal fit. Classes were termed High Utilization (n = 95), Adult Primary Care Physician (PCP)-Moderate Utilization (n = 107), Family PCP-Moderate Utilization (n = 81), and Low Utilization (n = 76). Age, family income, and illness controllability predicted class membership. Class membership predicted transition readiness and PHC, but not MHC. The High Utilization group reported the highest transition readiness and the lowest HRQoL, while the Low Utilization group reported the lowest transition readiness and highest HRQoL. Conclusions The present study characterizes the varying degrees to which AYAs with CMCs utilize health care. Our findings suggest poorer PHC may result in higher HCU, and that greater skills and health care engagement may not be sufficient for optimizing HRQoL. Future research should examine the High Utilization subgroup and their risk for poorer HRQoL.

scholarly journals Why Do Patients Leave against Medical Advice? Reasons, Consequences, Prevention, and Interventions

Healthcare ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 111
Author(s):  
Asseel Albayati ◽  
Steven Douedi ◽  
Abbas Alshami ◽  
Mohammad A. Hossain ◽  
Shuvendu Sen ◽  
...  
Keyword(s):  
Hospital Admissions ◽  
Medical Advice ◽  
Preventive Strategies ◽  
Against Medical Advice ◽  
Cause Analysis ◽  
Persistent Problem ◽  
Root Cause ◽  
Discharge Against Medical Advice ◽  
Leaving Against Medical Advice

Background: A patient decides to leave the hospital against medical advice. Is this an erratic eccentric behavior of the patient, or a gap in the quality of care provided by the hospital? With a significant and increasing prevalence of up to 1–2% of all hospital admissions, leaving against medical advice affects both the patient and the healthcare provider. We hereby explore this persistent problem in the healthcare system. We searched Medline and PubMed within the last 10 years, using the keywords “discharge against medical advice,” “DAMA,” “leave against medical advice,” and “AMA.” We retrospectively reviewed 49 articles in our project. Ishikawa fishbone root cause analysis (RCA) was employed to explore reasons for leaving against medical advice (AMA). This report presents the results of the RCA and highlights the consequences of discharge against medical advice (DAMA). In addition, the article explores preventive strategies, as well as interventions to ameliorate leaving AMA.

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