Deploying Efficiently Modern Applications on Cloud

2022 ◽  
Author(s):  
Damiano Perri ◽  
Marco Simonetti ◽  
Osvaldo Gervasi
Keyword(s):  
Response Time ◽  
Web Application ◽  
High Stress ◽  
Use Case ◽  
Average Response Time ◽  
Central Schemes ◽  
Network Problems ◽  
Depth Analysis ◽  
Computational Resources ◽  
Very High

This study analyses some of the leading technologies for the construction and configuration of IT infrastructures to provide services to users. For modern applications, guaranteeing service continuity even in very high computational load or network problems is essential. Our configuration has among the main objectives of being highly available (HA) and horizontally scalable, that is, able to increase the computational resources that can be delivered when needed and reduce them when they are no longer necessary. Various architectural possibilities are analysed, and the central schemes used to tackle problems of this type are also described in terms of disaster recovery. The benefits offered by virtualisation technologies are highlighted and are bought with modern techniques for managing Docker containers that will be used to build the back-end of a sample infrastructure related to a use-case we have developed. In addition to this, an in-depth analysis is reported on the central autoscaling policies that can help manage high loads of requests from users to the services provided by the infrastructure. The results we have presented show an average response time of 21.7 milliseconds with a standard deviation of 76.3 milliseconds showing excellent responsiveness. Some peaks are associated with high-stress events for the infrastructure, but the response time does not exceed 2 seconds even in this case. The results of the considered use case studied for nine months are presented and discussed. In the study period, we improved the back-end configuration and defined the main metrics to deploy the web application efficiently.

scholarly journals Application of A* (A Star) Algorithm on Automation of Trash Can

2019 ◽  
Vol 8 (2S9) ◽  
pp. 261-263
Keyword(s):  
Response Time ◽  
Global Positioning System ◽  
Industrial Revolution ◽  
Human Life ◽  
Positioning System ◽  
Average Response ◽  
Average Response Time ◽  
Stopping Distance ◽  
Coordinate Position ◽  
Global Positioning

The industrial revolution 4.0 demands the convenience of a human life facility. Not to forget also in the cleaning service. When we will dispose of trash, we do not need to look for the trash can, it is precisely the trash can that will approach us. This smartphone-based application uses the A * (A star) algorithm as the basis for its work, while for communication between smartphones with the trash can system using blue tooth. The smartphone sends its coordinate position through the Global Positioning System facility, then the trash can system will search for the sender's location. The experimental results show that the average stopping distance indoors without barrier is 7.03 meters with an average time response of 25.3 seconds, the average stopping distance in the room with a barrier of 7.2 meters with the average response time 3.6 seconds average, stopping distance outdoor without a barrier of 5.7 meters with an average response time of 258.3 seconds, and the average outdoor stopping distance with a barrier of 2.73 meters with a response an average time of 141.3 seconds.

scholarly journals The major worldwide stress of healthcare professionals during the first wave of the COVID-19 pandemic – the international COVISTRESS survey

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0257840
Author(s):  
Sébastien Couarraze ◽  
Louis Delamarre ◽  
Fouad Marhar ◽  
Binh Quach ◽  
Jiao Jiao ◽  
...  
Keyword(s):  
Healthcare Workers ◽  
Protective Factor ◽  
Healthcare Professionals ◽  
High Stress ◽  
Medical Doctors ◽  
Health Crisis ◽  
Paramedical Staff ◽  
Increased Risk ◽  
Stress Levels ◽  
Very High

Introduction The COVID-19 pandemic has initiated an upheaval in society and has been the cause of considerable stress during this period. Healthcare professionals have been on the front line during this health crisis, particularly paramedical staff. The aim of this study was to assess the high level of stress of healthcare workers during the first wave of the pandemic. Materials and methods The COVISTRESS international study is a questionnaire disseminated online collecting demographic and stress-related data over the globe, during the pandemic. Stress levels were evaluated using non-calibrated visual analog scale, from 0 (no stress) to 100 (maximal stress). Results Among the 13,537 individuals from 44 countries who completed the survey from January to June 2020, we included 10,051 workers (including 1379 healthcare workers, 631 medical doctors and 748 paramedical staff). The stress levels during the first wave of the pandemic were 57.8 ± 33 in the whole cohort, 65.3 ± 29.1 in medical doctors, and 73.6 ± 27.7 in paramedical staff. Healthcare professionals and especially paramedical staff had the highest levels of stress (p < 0.001 vs non-healthcare workers). Across all occupational categories, women had systematically significantly higher levels of work-related stress than men (p < 0.001). There was a negative correlation between age and stress level (r = -0.098, p < 0.001). Healthcare professionals demonstrated an increased risk of very-high stress levels (>80) compared to other workers (OR = 2.13, 95% CI 1.87–2.41). Paramedical staff risk for very-high levels of stress was higher than doctors’ (1.88, 1.50–2.34). The risk of high levels of stress also increased in women (1.83, 1.61–2.09; p < 0.001 vs. men) and in people aged <50 (1.45, 1.26–1.66; p < 0.001 vs. aged >50). Conclusions The first wave of the pandemic was a major stressful event for healthcare workers, especially paramedical staff. Among individuals, women were the most at risk while age was a protective factor.

scholarly journals Identification of the flow experience in gamified educational environment

2021 ◽  
pp. 167-176
Author(s):  
Veljko Aleksić ◽  
Olga Ristić
Keyword(s):  
Response Time ◽  
User Experience ◽  
Educational Environment ◽  
Assessment Tools ◽  
Flow Experience ◽  
Sense Of Control ◽  
Average Response ◽  
Average Response Time ◽  
Educational Environments ◽  
Experience Of Flow

Determining and understanding the user experience in gamified educational environments is a contemporary challenge, especially when analyzing the flow experience (balance of challenge and skills, conscious actions, clear goals, clear feedback, sense of control, etc.). The reason for this lies in the assessment tools that most often created and implemented to separate the user from the experience of flow and/or cannot be applied en masse.The paper presents the results of a study in which flow experience was modeled based on data logs (e.g. number of mouse actions or average response time) in gamified educational environment on a sample of 31HE students. The results indicate the existence of correlations between data logs and flow experience dimensions.

scholarly journals Improving the Average Response Time in Collective I/O

2011 ◽  
pp. 71-80 ◽  
Author(s):  
Chen Jin ◽  
Saba Sehrish ◽  
Wei-keng Liao ◽  
Alok Choudhary ◽  
Karen Schuchardt
Keyword(s):  
Response Time ◽  
Average Response ◽  
Average Response Time

Volume/shear work ratio influence on wear and stress of soil chisel tine modelled by DEM

2021 ◽  
pp. 135065012110582
Author(s):  
Egidijus Katinas ◽  
Rostilav Choteborsky
Keyword(s):  
High Stress ◽  
Wear Intensity ◽  
Tool Geometry ◽  
Soil Conditions ◽  
Agricultural Equipment ◽  
Wear Analysis ◽  
Preparation Period ◽  
Soil Preparation ◽  
Soil Bin ◽  
Very High

Agricultural equipment is working in very high-stress conditions. However, it has a significant influence on the wear losses of soil processing parts. Chisel is operating at 30 cm working depth at a maximum of 12 km·h−1 working speed. Due to unpredictable soil conditions, chisel tines suffer high wear losses. It leads to time consumption and cost expenses during the soil preparation period. Wear resistance, and agronomical requirements (working depth, loosening of soil) are the main criteria of agricultural equipment producers. The discrete element method is a solution that simulates soil as sphere shape particles with soil properties. Wear results reveal the change of parts shape, acting forces, and stresses during the simulation in the virtual soil bin. The used Rocky DEM software uses a parameter C (volume/shear work ratio) to describe wear intensity, which varies for different geometry. Chisel tine geometry should be divided into sections with varied parameter C according to stress acting on the surface. The test conditions can be used for future wear analysis of varied tool geometry and protection (sintered tungsten carbide plates, hard-faced surface, etc.) agricultural tools to compare its durability in different soil conditions.

scholarly journals Side effect profile and comparative tolerability of 21 antidepressants in the acute treatment of major depression in adults: protocol for a network meta-analysis

2019 ◽  
Vol 22 (2) ◽  
pp. 61-66 ◽  
Author(s):  
Anneka Tomlinson ◽  
Orestis Efthimiou ◽  
Katharine Boaden ◽  
Emma New ◽  
Sarah Mather ◽  
...  
Keyword(s):  
Major Depression ◽  
Adverse Events ◽  
Web Application ◽  
Acute Treatment ◽  
First Generation ◽  
Second Generation ◽  
Meta Analysis ◽  
Number Of Patients ◽  
Reference Selection ◽  
Depth Analysis

IntroductionWe have recently compared all second-generation as well as selected first-generation antidepressants in terms of efficacy and acceptability in the acute treatment of major depression. Here we present a protocol for a network meta-analysis aimed at extending these results, updating the evidence base and comparing all second-generation as well as selected first-generation antidepressants in terms of specific adverse events and tolerability in the acute treatment of major depression in adults.Methods and analysisWe will include all double-blind randomised controlled trials comparing one active drug with another or with placebo in the acute treatment major depression in adults. We will compare the following active agents: agomelatine, amitriptyline, bupropion, citalopram, clomipramine, desvenlafaxine, duloxetine, escitalopram, fluoxetine, fluvoxamine, levomilnacipran, milnacipran, mirtazapine, nefazodone, paroxetine, reboxetine, sertraline, trazodone, venlafaxine, vilazodone and vortioxetine. The main outcomes will include the total number of patients experiencing specific adverse events; experiencing serious adverse events; and experiencing at least one adverse event. Published and unpublished studies will be retrieved through relevant database searches, trial registries and websites; reference selection and data extraction will be completed by at least two independent reviewers. For each outcome we will undertake a network meta-analysis to synthesise all evidence. We will use local and global methods to evaluate consistency. We will perform all analyses in R. We will assess the quality of evidence contributing to network estimates with the Confidence in Network Meta-Analysis web application.DiscussionThis work will provide an in- depth analysis and an insight into the specific adverse events of individual antidepressants.Ethics and disseminationThis review does not require ethical approval.PROSPERO registration numberCRD42019128141.

scholarly journals Average Response Time (ART):Real-Time Traffic Management in VFC Enabled Smart Cities

2020 ◽  
Vol 981 ◽  
pp. 022054
Author(s):  
Shabana ◽  
Sallauddin Mohmmad ◽  
Mohammed Ali Shaik ◽  
K Mahender ◽  
Ranganath Kanakam ◽  
...  
Keyword(s):  
Response Time ◽  
Real Time ◽  
Traffic Management ◽  
Smart Cities ◽  
Average Response ◽  
Average Response Time ◽  
Real Time Traffic

scholarly journals Stress and Coping Mechanism of Infertile Women Attending Infertility Clinic in Kathmandu

2015 ◽  
Vol 2 (4) ◽  
pp. 24-28 ◽  
Author(s):  
Chandrakala Sharma ◽  
D Subedi ◽  
L Rai ◽  
K Upreti
Keyword(s):  
Coping Strategies ◽  
Religious Coping ◽  
High Stress ◽  
Structured Interview ◽  
Stress And Coping ◽  
Coping Mechanism ◽  
Infertile Women ◽  
High Level ◽  
And Coping ◽  
Very High

INTRODUCTION: Many women face problems related to infertility in various aspects of their life. Also, it is not comfortable to discuss on this issue. Because of this, the feelings and distress faced by women may not come out and the pent up emotions may lead to different stress related problems.   MATERIAL AND METHODS : A descriptive research design was adopted to assess the stress and coping mechanism of infertile women attending infertility clinic in Kathmandu Nepal. The study was conducted from October 2011 to January 2013. Purposive sampling technique was used and sample size was 100. Data was collected through semi- structured interview using; 'Perceived Stress Scale'(PSS) and 'Coping Check List' (CCL).   RESULTS: Regarding stress level of respondents, 40% were at very high level of stress and 35% with high level of stress. High level stress was found among the age group of 21-30 years. In relation to level of stress and coping strategies, 54.17% respondents with high stress used religious coping strategies, 50% of the respondents with very high stress also used religious coping, followed by 40% emotional coping and 37.5% problem focused coping and seeking social support strategies to overcome the stress.   CONCLUSION: It can be concluded that the  almost more than half of the respondents were under high level of stress and mostly were those who are under  treatment for more than 1-3 yrs of duration. The study also concluded that the higher the age the respondents were more stressed due to the infertility. It was also found that most of the respondents used religious coping as well as emotional focused coping during the stressful period.DOI: http://dx.doi.org/10.3126/jucms.v2i4.12039Journal of Universal College of Medical Sciences (2014) Vol.02 No.04 Issue 08Page: 24-28

scholarly journals Online Teaching Effectiveness: A Tale of Two Instructors

2009 ◽  
Vol 10 (3) ◽  
Author(s):  
Paul Gorsky ◽  
Ina Blau
Keyword(s):  
Response Time ◽  
Social Presence ◽  
Online Teaching ◽  
Best Practice ◽  
Teaching Effectiveness ◽  
Ad Hoc ◽  
The Other ◽  
Cognitive Presence ◽  
Teaching Presence ◽  
Very High

Upon completion of a graduate level course at the Open University of Israel, one instructor received very high student ratings while the other received very low ratings. We utilized this exceptional situation to perform ad hoc analyses of their course forums. The objective of this study was to map the dialogic behavior that occurred and to create suggestions for best practice and for worst practice in terms of active and passive participation, instructor response time, and the extent of teaching presence, social presence, and cognitive presence.

The Efficacy of Combined Physical and Mental Practice in the Learning of a Foot-Sequence Task after Stroke: A Case Report

2004 ◽  
Vol 18 (2) ◽  
pp. 106-111 ◽  
Author(s):  
Philip L. Jackson ◽  
Julien Doyon ◽  
Carol L. Richards ◽  
Francine Malouin
Keyword(s):  
Response Time ◽  
Lower Limb ◽  
Response Times ◽  
Single Case ◽  
Mental Practice ◽  
Physical Practice ◽  
Average Response Time ◽  
Additional Improvement ◽  
Study Setting

Objective. To investigate the effect of mental practice on the learning of a sequential task for the lower limb in a patient with a hemiparesis resulting from a stroke. Design. A single-case study. Setting. Research laboratory of a university-affiliated rehabilitation center. Patient. A right-handed 38-year-old man who had suffered a left hemorrhagic subcortical stroke 4 months prior. Intervention. The patient practiced a serial response time task with the lower limb in 3 distinct training phases over a period of 5 weeks: 2 weeks of physical practice, 1 week of combined physical and mental practice, and then 2 weeks of mental practice alone. Main Outcome Measures. Performance on the task measured through errors and response times. Imagery abilities measured through questionnaires. Results . The patient’s average response time improved significantly during the 1st 5 days of physical practice (26%) but then failed to show further improvement during the following week of physical practice. The combination of mental and physical practice during the 3rd week yielded additional improvement (10.3%), whereas the following 2 weeks of mental practice resulted in a marginal increase in performance (2.2%). Conclusion. The findings show that mental practice, when combined with physical practice, can improve the performance of a sequential motor skill in people who had a stroke, and suggest that mental practice could play a role in the retention of newly acquired abilities.

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