Research on the Real-Time Property of TTCAN Protocol in Vehicle Communication Network

2014 ◽  
Vol 487 ◽  
pp. 674-677
Author(s):  
Xie Li
Keyword(s):  
Communication Network ◽  
Delay Time ◽  
Time Window ◽  
Communication Protocol ◽  
Idle Time ◽  
Vehicle Communication ◽  
Network Load ◽  
Network Application ◽  
Load Frame ◽  
The Impact

This paper introduces the time triggered bus technology in vehicle communication network application, the bus protocol project: exclusive time window, the window of time and idle time window is discussed. In the laboratory conditions, the different communication protocols and communication parameters can be easily realized, which can be used to analyze the CAN and TTCAN communication protocol and network load frame priority to the impact of delay time, and verify the correctness of the model.

Cloud computing demand elasticity algorithm based on ant colony algorithm

2020 ◽  
Vol 13 ◽  
Author(s):  
Chunyu Liu ◽  
Fengrui Mu ◽  
Weilong Zhang
Keyword(s):  
Ant Colony Algorithm ◽  
Theory Of Elasticity ◽  
Ant Colony ◽  
Demand Elasticity ◽  
Network Efficiency ◽  
Elasticity Of Demand ◽  
Operating Profit ◽  
Network Load ◽  
Network Utilization ◽  
The Impact

Background: In recent era of technology, the traditional Ant Colony Algorithm (ACO) is insufficient in solving the problem of network congestion and load balance, and network utilization. Methods: This paper proposes an improved ant colony algorithm, which considers the price factor based on the theory of elasticity of demand. The price factor is denominated in the impact on the network load which means indirect control of network load, congestion or auxiliary solution to calculate the idle resources caused by the low network utilization and reduced profits. Results: Experimental results show that the improved algorithm can balance the overall network load, extend the life of path by nearly 3 hours, greatly reduce the risk of network paralysis, and increase the profit of the manufacturer by 300 million Yuan. Conclusion: Furthermore, results shows that the improved method has a great application value in improving the network efficiency, balancing network load, prolonging network life and increasing network operating profit.

scholarly journals Impact of COVID-19 pandemic on HIV viremia: a single-center cohort study in northern Italy

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Ilaria Izzo ◽  
Canio Carriero ◽  
Giulia Gardini ◽  
Benedetta Fumarola ◽  
Erika Chiari ◽  
...  
Keyword(s):  
Time Window ◽  
Time Windows ◽  
Continuum Of Care ◽  
Northern Italy ◽  
Hiv Diagnosis ◽  
Hiv Patients ◽  
Before And After ◽  
Missed Visits ◽  
Hiv Continuum Of Care ◽  
The Impact

Abstract Background Brescia Province, northern Italy, was one of the worst epicenters of the COVID-19 pandemic. The division of infectious diseases of ASST (Azienda Socio Sanitaria Territoriale) Spedali Civili Hospital of Brescia had to face a great number of inpatients with severe COVID-19 infection and to ensure the continuum of care for almost 4000 outpatients with HIV infection actively followed by us. In a recent manuscript we described the impact of the pandemic on continuum of care in our HIV cohort expressed as number of missed visits, number of new HIV diagnosis, drop in ART (antiretroviral therapy) dispensation and number of hospitalized HIV patients due to SARS-CoV-2 infection. In this short communication, we completed the previous article with data of HIV plasmatic viremia of the same cohort before and during pandemic. Methods We considered all HIV-patients in stable ART for at least 6 months and with at least 1 available HIV viremia in the time window March 01–November 30, 2019, and another group of HIV patients with the same two requisites but in different time windows of the COVID-19 period (March 01–May 31, 2020, and June 01–November 30, 2020). For patients with positive viremia (PV) during COVID-19 period, we reported also the values of viral load (VL) just before and after PV. Results: the percentage of patients with PV during COVID-19 period was lower than the previous year (2.8% vs 7%). Only 1% of our outpatients surely suffered from pandemic in term of loss of previous viral suppression. Conclusions Our efforts to limit the impact of pandemic on our HIV outpatients were effective to ensure HIV continuum of care.

Sex and Conception Probability

2021 ◽  
Author(s):  
Justin C. Konje ◽  
Oladipo A. Ladipo
Keyword(s):  
Menstrual Cycle ◽  
Sexual Intercourse ◽  
Time Window ◽  
Continuous Process ◽  
Female Genital Tract ◽  
Human Reproduction ◽  
Current Evidence ◽  
Fertile Window ◽  
Time Period ◽  
The Impact

Central to the survival of any species is the ability to procreate. In most cases, procreation is sexual, involving a process that ensures appropriate and timed contact between the male and female gametes. Successful human reproduction is premised on sexual intercourse occurring at a time when there is a receptive endometrium as well as an ovum ready for fertilization by spermatozoa. This time window of the menstrual cycle known as the fertile or fecund window is poorly defined and highly variable from one individual to another. Furthermore, while spermatogenesis is a continuous process, the impact of too frequent intercourse (defined as that occurring more than every 2 to 3 days) on fertilization has often been thought to be associated with a decreased fertilization potential of spermatozoa. Current evidence challenges previously held views on the fertile window and how it is determined, the timing of intercourse and how it is related to conception and miscarriages, the length of the luteal phase, and the precise time period during which the chances of fertilization are highest in any given menstrual cycle. The ability of spermatozoa to survive in the female genital tract for 5 days means fertilization can occur up to 5 days from sexual intercourse. During each menstrual cycle, there is a window of 5 to 6 days for fertilization to occur, and this period is defined not by the length of the cycle but by the timing of ovulation, with the chances of fertilization highest with intercourse occurring 1 to 2 days before ovulation.

Abstract P481: Time to Reperfusion Determines Clinical Outcomes Independent of Post Thrombectomy Infarct Volume

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Shashvat Desai ◽  
Amin N Aghaebrahim ◽  
James E Siegler ◽  
Andre Monteiro ◽  
Ashutosh P Jadhav ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Clinical Outcomes ◽  
Clinical Improvement ◽  
Functional Outcomes ◽  
Time Window ◽  
Infarct Volume ◽  
Late Time ◽  
Inclusion Criteria ◽  
Ischemic Time ◽  
The Impact

Introduction: Late time window thrombectomy trials demonstrated that good functional outcomes can be achieved up to 24 hours from stroke onset in Slow Progressors (small infarct volume and large penumbral volume). In this study, we aim to investigate whether early (<6 hours) recanalization leads to superior functional outcomes compared to delayed recanalization (>6 hours) amongst patients with similar 24-hour infarct volumes post thrombectomy. Methods: We performed a retrospective analysis of a prospectively maintained LVO stroke thrombectomy database across 3 comprehensive stroke centers. Demographic, clinical, radiological, and outcomes data were analyzed. Inclusion criteria were witnessed onset anterior circulation LVO [internal carotid or middle cerebral artery M1] strokes with a good baseline mRS score (0-1) having achieved success recanalization [mTICI 2b-3] and 24-hour infarct volume of ≤10 ml on CT head or MRI. Univariate and multivariate analysis of the impact of time to recanalization on clinical outcomes was performed. Results: Of the 499 LVO strokes undergoing thrombectomy, 30% (148) met inclusion criteria. Mean age was 70 ±14 and median NIHSS score was 17 (14-21). Early recanalization (<6h) was achieved in 65% (96) of patients. Baseline demographic (age: 73 vs 74, p=0.80) and clinical characteristics (NIHSS:16.5 vs 17, p=0.52; 24-h infarct volume: 4.4 vs 4.2 ml, p=0.60) were comparable between early versus late recanalization patients. Rates of early clinical improvement (24-h NIHSS <6) (71% vs 39%, p=0.0007) and mRS 0-2 at 90 days (68% vs 48%, p=0.019) were higher in early recanalizers compared to late recanalizers. Multivariate analysis including age, NIHSS, time to recanalization, and 24-hour infarct volume identified early recanalization as an independent predictor of mRS 0-2 at 90 days (OR-2.41 95% CI 1.89-4.50). Every 1-hour increase in time to recanalization decreased the odds of 90-day mRS 0-2 by 2.2%. Conclusion: Among patients with similar 24-hour infarct volume post thrombectomy (≤10 ml), shorter time to successful recanalization is associated with significantly higher rates of early clinical improvement and mRS 0-2 at 90 days. Increased penumbral ischemic time may have an impact on outcomes post stroke thrombectomy.

Abstract WP5: Outcomes Are Not Different Between Patients With Intermediate and High Dwi-aspects After Stent-retriever Thrombectomy

Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Woong Yoon ◽  
Seul Kee Kim ◽  
Tae Wook Heo ◽  
Byung Hyun Baek ◽  
Jaechan Park
Keyword(s):  
Functional Outcome ◽  
Time Window ◽  
Multivariate Logistic Regression Analysis ◽  
Area Under The Curve ◽  
Stent Retriever ◽  
Operating Characteristics ◽  
Anterior Circulation ◽  
Good Outcome ◽  
Characteristics Analysis ◽  
The Impact

Introduction: Few studies have investigated the association between pretreatment DWI-ASPECTS and functional outcome after stent-retriever thrombectomy in patients with acute anterior circulation stroke. Hypothesis: Patients with acute stroke and DWI-ASPECTS <7 might have a similar chance of a good outcome compared to those with a higher DWI-ASPECTS, if they are treated with a stent-retriever thrombectomy in a short time window. However, this hypothesis has not been tested. Thus, this study aimed to investigate the impact of DWI-ASPECTS on functional outcome in patients with acute anterior circulation stroke who received a stent-retriever thrombectomy. Methods: We retrospectively analyzed the clinical and DWI data from 171 patients with acute anterior circulation stroke who were treated with stent-retriever thrombectomy within 6 hours of symptom onset. The DWI-ASPECTS was assessed by two readers. A good outcome was defined as a modified Rankin Scale score of 0-2 at 3 months. Results: The median DWI-ASPECTS was 7 (interquartile range, 6-8). Receiver operating characteristics analysis revealed an ASPECTS ≥ 7 was the optimal cut-off to predict a good outcome at 3 months (area under the curve=0.57; sensitivity, 75.3%; specificity, 34.4%). The rates of good outcome, symptomatic hemorrhage, and mortality were not different between high DWI-ASPECTS (scores of 7-10) and intermediate (scores of 4-6) groups. In patients with an intermediate DWI-ASPECTS, good outcome was achieved in 46.5% (20/43) of patients with successful revascularization (modified TICI 2b or 3), whereas no patients without successful revascularization had a good outcome ( P =0.016). In multivariate logistic regression analysis, independent predictors of good outcome were age and successful revascularization. Conclusions: Our study suggested that treatment outcomes were not different between patients with a high DWI-ASPECTS and those with an intermediate DWI-ASPECTS who underwent stent-retriever thrombectomy for acute anterior circulation stroke. Thus, patients with an intermediate DWI-ASPECTS otherwise eligible for endovascular therapy should not be excluded for stent-retriever thrombectomy or stroke trials.

Abstract P164: The Impact of the Expanded EVT Window on Acute Stroke Services: A Large Northwest Telestroke Network Experience

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Theodore Lowenkopf ◽  
Leslie Corless ◽  
Elizabeth Baraban
Keyword(s):  
Acute Stroke ◽  
Rural Areas ◽  
Treatment Time ◽  
Time Window ◽  
Tertiary Care ◽  
The United States ◽  
Geographic Region ◽  
Anterior Circulation ◽  
Stroke Subtypes ◽  
The Impact

Background: Telestroke has led the technological revolution in providing acute medical services to rural areas in the United States since the beginning of this century. In January 2018 the American Stroke Association made a level IA recommendation to expand the treatment time window for endovascular thrombectomy (EVT) for acute ischemic stroke (AIS) from 6 to 24 hours for anterior circulation stroke based on perfusion imaging. Our study is the first to our knowledge to report the effect of the expanded time window on acute stroke consult and treatment volumes in a large rural supporting telestroke network. Methods: Stroke registry data from two tertiary care facilities from a 22 hospital telestroke network supporting a large (> 78,000 mi 2 ) primarily rural Northwest geographic region were used. Data included stroke patients arriving within 24 hours of last known well (LKW) between January 2017 and March 2019. Patients arriving January 2017 to December 2017 were grouped into the PRE-expanded time window and those arriving April 2018 to March 2019 into the POST-expanded time window. Stroke subtypes, transfers, telestroke consults (via phone or video), and EVT treatments were compared across time periods. Analyses were performed using Pearson’s chi square test, corrected for multiple comparisons. Results: A total of 1117 patients arrived with stroke symptoms within 24 hours of LKW, 567 (50.8%) in PRE and 550 (49.2%) in POST-window. The percentage of all stroke subtypes were not significantly different in the PRE and POST patient groups (p=.720). However, the percent of telestroke consults increased by 12.1% from 62.3% to 74.4% (p<.001) but the percent of video consults remained similar (25.9% vs 25.8%). The total number of transfers (142 vs 141) and percentage of transfers among AIS patients (25.0% vs 25.6%) from partner to hub did not change. The percentage of thrombectomies among transfers rose by 8.7% with the expanded time window, but was not statistically significant [p=0.118]. Conclusions: In a large Northwest telestroke rural network the expanded EVT treatment time window led to a marked increase in all telestroke consults but did not impact video consults, transfer, or percentage of patients treated.

ASSESSING THE IMPACT OF CONGRUENT AND INCONGRUENT STIMULUS IN STROOP TASK, USING EVENT-RELATED POTENTIALS (ERP) IN PATIENTS WITH DEPRESSION

2018 ◽  
Vol 30 (05) ◽  
pp. 1850034
Author(s):  
Yeganeh Shahsavar ◽  
Majid Ghoshuni
Keyword(s):  
Stroop Task ◽  
Time Window ◽  
Event Related Potentials ◽  
Peak Time ◽  
Eeg Signals ◽  
Incongruent Stimulus ◽  
Related Potentials ◽  
Recording Channel ◽  
The Mean ◽  
The Impact

The main goal of this event-related potentials (ERPs) study was to assess the effects of stimulations in Stroop task in brain activities of patients with different degrees of depression. Eighteen patients (10 males, with the mean age [Formula: see text]) were asked to fill out Beck’s depression questionnaire. Electroencephalographic (EEG) signals of subjects were recorded in three channels (Pz, Cz, and Fz) during Stroop test. This test entailed 360 stimulations, which included 120 congruent, 120 incongruent, and 120 neutral stimulations. To analyze the data, 18 time features in each type of stimulus were extracted from the ERP components and the optimal features were selected. The correlation between the subjects’ scores in Beck’s depression questionnaires and the extracted time features in each recording channel was calculated in order to select the best features. Total area, and peak-to-peak time window in the Cz channel in both the congruent and incongruent stimulus showed significant correlation with Beck scores, with [Formula: see text], [Formula: see text] and [Formula: see text], [Formula: see text], respectively. Consequently, given the correlation between time features and the subjects’ Beck scores with different degrees of depression, it can be interpreted that in case of growth in degrees of depression, stimulations involving congruent images would produce more challenging interferences for the patients compared to incongruent stimulations which can be more effective in diagnosing the level of disorder.

SILICON ON RAISED INSULATOR FIELD EFFECT DIODE (SORI-FED) FOR ALLEVIATING SCALING PROBLEM IN FED

2014 ◽  
Vol 28 (05) ◽  
pp. 1450038 ◽  
Author(s):  
MAHDI VADIZADEH ◽  
MORTEZA FATHIPOUR ◽  
GHAFAR DARVISH
Keyword(s):  
Delay Time ◽  
Field Effect ◽  
Channel Length ◽  
Gate Delay ◽  
Electrical Characteristics ◽  
Band To Band Tunneling ◽  
Main Components ◽  
Channel Lengths ◽  
Length Scaling ◽  
The Impact

One of the main shortcomings in a field effect diode (FED) is its scaling. Use of an oxide layer in the channel is proposed to enhance the control of the gate on the channel carriers. This is the so-called silicon on raised insulator FED (SORI-FFD) structure. The Shockley–Read–Hall (SRH) mechanism is one of the main components of leakage current in FED devices. The potential induced by the gates in the OFF-state of a SORI-FFD, is larger than that induced by the gates of a regular FED. This reduces, SRH recombination rate. Hence, OFF-state characteristics of the SORI-FED device improves. We evaluate the impact of band-to-band tunneling (BTBT) on the electrical characteristics of Modified FED (M-FED).We show that for channel lengths of 35 nm and lower this device does not turn off. While, the proposed structure makes device channel length scaling possible down to 15 nm. We will also compare electrical characteristics of SORI-FED and M-FED using three metrics: gate delay time versus channel length, gate delay time versus I ON /I OFF ratio and energy-delay product versus channel length. Benchmarking results show the proposed FED structure provides improvement in I ON /I OFF ratio and holds promise for future logic transistor applications.

Study on TEA Encryption for Public Communication Network Wireless Remoter

2014 ◽  
Vol 565 ◽  
pp. 179-182 ◽  
Author(s):  
Yue Tao Ge ◽  
Xiao Ming Liu ◽  
Xiao Tong Yin
Keyword(s):  
Communication Network ◽  
Data Transmission ◽  
Communication Protocol ◽  
Encryption Algorithm ◽  
Public Communication ◽  
The Public ◽  
Encryption And Decryption

In order to realize wireless remoter not only securely but also quickly data transmission in the public communication network, the Tiny Encryption Algorithm (TEA) encryption and decryption algorithm is studied in this paper and the properties of TEA are analyzed. According to communication protocol of remoter, encryption and decryption program process are designed. Because of TEA encryption, remoter transmitter and receiver can communicate strongly in the public communication network.

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