Why Current Doppler Ultrasound Methodology Is Inaccurate in Assessing Cerebral Venous Return: The Alternative of the Ultrasonic Jugular Venous Pulse by Paolo Zamboni

“…Finally, the tutorial describes alternative ultrasound calculation of flow based on the Womersley method, which takes into account the variation of the jugular CSA overtime. …”
Get full text

An Integrated Multiattribute Group Decision-Making Approach for Risk Assessment in Aviation Emergency Rescue by Xia Wang, Xue-dong Liang, Xiao-yan Li, Peng Luo

“…Next, the weight vector for risk assessment is calculated using the consensus-based improved analytic hierarchy process (IAHP). …”
Get full text

Production of calcined eggshell: Process description and economic analysis by Lim Jun Jie, Sethupathi Sumathi, Mohd Ismail Nor Ismaliza

“…A process flow diagram was developed starting from the transportation to storage of final product, CES. Calculation of process parameters were based on 1,000kg ES/day with 50% yield after the calcination process, generating about 475 kg CES/day. …”
Get full text

Research on Extended L-Band Frequency Coordination Scheme in Mobile Direct Connection to NGSO Satellite Service by Lichong WANG, Chenhua SUN, Weisong ZHAO, Quan LIU, Shan LU

“…At present, the frequency of non-geostationary orbit(NGSO) mobile satellite service is becoming more and more tense.Aimed at the complicated problem of frequency coordination of mobile direct connection to NGSO satellite service, firstly, an analysis was conducted on the current frequency usage status and trends of mobile direct connection to NGSO satellite service.Secondly, the frequency coordination scheme between mobile direct connection to NGSO satellite service and other same frequency space services in extended L-band was analyzed and studied.By analyzed the frequency coordination of mobile direct connection to NGSO satellite service in extended L-band, the space services that need to carry out frequency coordination work with mobile direct connection to NGSO satellite service were determined.The basic frequency coordination scheme of mobile direct connection to NGSO satellite service with each space service was studied and the coordination scheme suggestions were given, at the same time, the interference analysis and calculation involved in the specific coordination scheme were listed for example.The above research can be used as reference for the research of frequency coordination of mobile direct connection to NGSO satellite service system, as well as for the next step research of key technologies related to mobile direct connection to NGSO satellite service.…”
Get full text

State Estimation Based on Sigma Point Kalman Filter for Suspension System in Presence of Road Excitation Influenced by Velocity of the Car by Chi Nguyen Van

“…The stochastic characteristic of the road excitation depending on the car’s velocity is taken into account in the model used for suspension system state estimation. The results calculated based on the practical experiment data for specific road profile with some particular velocities of the car show that the suspension system states are estimated quite accurately in comparison with the practice states.…”
Get full text

Extraction of compression indices from maternal-fetal heart rate simultaneous signals. by Mariana S Ramos, Susana Brás, Paula Pinto, Luísa Castro

“…To understand how the features calculated in this work can be useful in distinguishing acidemic and non-acidemic cases, a classifier was applied. …”
Get full text

ACCURACY ANALYSIS OF UAV COORDINATES USING EGNOS AND SDCM AUGMENTATION SYSTEMS by Kamil KRASUSKI, Damian WIERZBICKI, Małgorzata KIRSCHENSTEIN, Marta ŻUKOWSKA, Paweł GOŁDA

“…The study also presents the effectiveness of the proposed algorithm in terms of calculating the accuracy of EGNOS+SDCM positioning for the weighted average model. …”
Get full text

Kinematic Analysis and Optimization of Jerk Considering Elasticity of Weightlifting Bar and Damping Effect of Body in Clean and Jerk by Min Hyok Jon, Un‐Ryong Rim

“…Besides, spring constant is calculated by theory of bending of beam, as well. Finally, an optimal control problem based on the proposed kinematic model is formulated to optimize the jerk. …”
Get full text

Staminate Flower of Cocos Nucifera as Green Inhibitor for Mild Steel in HCl Medium by R. Rajalakshmi, A. S. Safina

“…Thermodynamic parameters of the corrosion process were calculated from temperature study. The adsorptive behaviour of Staminate Flower extract in acid solution may be approximated both by Langmuir and Temkin type isotherms. …”
Get full text

Approach to Predict Land Subsidence in Old Goafs considering the Influence of Engineering Noise by Chao Du, Fajin Zu, Chunpeng Han

“…It can be used as a calculation method to improve the prediction accuracy of surface subsidence in old goaf.…”
Get full text

How Reproducible Is Bioluminescent Imaging of Tumor Cell Growth? Single Time Point versus the Dynamic Measurement Approach by Shingo Baba, Steve Y. Cho, Zhaohui Ye, Linzhao Cheng, James M. Engles, Richard L. Wahl

“…The total 40-minute area under the curve (AUC) of photon intensity (photons/second) was calculated and compared with simplified fixed time point observations (every 5 minutes from 5 to 40 minutes after substrate injection). …”
Get full text

Synthesis, Hirshfeld Surfaces and Characterization of Diethanolaminium 3,5-dinitrosalicylate single crystal for NLO application by B Shanmuga Priya, D. Rajan Babu

“…The crystal’s refractive index is calculated as 1.693. A high HOMO-LUMO gap value indicates stability and less reactivity of the material. …”
Get full text

The Effect of Beverages and Polishing on Color Change of Different Temporary Prosthetic Materials: In Vitro Study by Ayşe Rençber Kızılkaya, Meltem Nermin Dursun

“…Then, the spectrophotometric measurements of the samples were repeated and the color change (ΔE00) values were calculated. Data were analyzed using a three-way-ANOVA followed by post hoc Tukey HSD test (p=0.05). …”
Get full text

Biofilm Forming Intestinal Escherichia coli as a Risk Factor for Increasing BMI in Type 2 Diabetic Patients by Sahar Salih Hussein, Asal Aziz Tawfeeq

“…Materials and Methods: This study included the collection of 180 samples from diabetic and non-diabetic participants (20–50 years) during the period from December 2022 to March 2023. BMI was calculated for study participants, and Escherichia coli was microbiologically and biochemically identified. …”
Get full text

Relay selection algorithm based on selfish behavior analysis in ultra-dense D2D by Yijun WANG, Youxu ZHANG, Dakun LIU, Guifen CHEN

“…In ultra-dense D2D communication, the current relay selection schemes mainly assume that the relay device has the initiative to participate in data forwarding, but some rational relay devices may delay or refuse to forward due to their own considerations, thus affecting the user experience.From the perspective of selfish behavior of relay devices, a method to identify selfish relay devices in D2D communication was proposed, and then an ultra-dense D2D relay selection algorithm based on selfish behavior analysis was proposed.Firstly, three relay identification attribute factors, namely joint interest degree (JID), forwarding history ratio (FHR) and relay physical state (RPS) were defined, and their weights were calculated by triangular fuzzy function to identify relay devices with selfish behavior.Secondly, based on the TOPSIS (technique for order of preference by similarity to ideal solution) method, the final relay equipment selection scheme relay was realized.Simulation results show that the proposed algorithm can identify selfish relay devices more effectively in D2D communication.Compared with other relay selection algorithms, the proposed algorithm has made significant progress in the aspects of D2D communication forwarding success rate, system average throughput and average time delay.…”
Get full text

Study on Temperature and Humidity Characteristics and Stability of Slopes Considering Evaporation Effect under Different Climatic Conditions by ZHANG Hao, SU Zhengyang, WANG Yakun, ZHANG Xuman

“…The research is conducted to study the temperature and humidity characteristics and stability laws of slopes under the action of rainfall and evaporation.Taking a mountain clay slope in a reservoir area of northeast China as an example,this study uses the locally measured climate data to build a slope model in VADOSE/W and SLOP/W modules of the software Geo-studio for finite element calculation.The results reveal that the water content of surface soil is greatly affected by evaporation,and under long-term evaporation conditions,the water content of deeper soil gradually decreases.The temperature of surface soil is greatly affected by evaporation,and as the length of evaporation time grows,the soil temperature at the same depth is higher,and the affected soil layer is deeper.The early rainfall infiltration rapidly reduces the safety factor of slope soil while the later evaporation gradually increases it.Under the evaporation effect of long-term dry weather,the safety factor gradually becomes stable,and it increases slowly after the rainfall without considering the evaporation effect.This indicates that evaporation is conducive to improving the safety factor and stability of slopes.The research results provide a reference for research on the temperature and humidity characteristics and stability of similar slopes in the reservoir areas of northeast China.…”
Get full text

The referral-marketing practices of travel agencies by Mornay Roberts-Lombard, TFJ Steyn

“…Data analysis was done by calculating averages and standard deviations, explorative factor analysis, Cronbach Alpha-values and practical significance by means of effect sizes. …”
Get full text

Hybrid Ontology for Semantic Information Retrieval Model Using Keyword Matching Indexing System by K. R. Uthayan, G. S. Anandha Mala

“…Keywords matching process with historical or information domain is significant in recent calculations for assisting the best match for specific input queries. …”
Get full text

Dynamic Modeling and Nonlinear Vibration Research of the Rotary Cutting Mechanism Based on Bond Graphs by Zhao Jiayi, Gao Yiyang, Zhao Changzhen, Rao Xiaobo, Ding Shunliang, Gao Jianshe

“…In this study, the dynamic model of the rotary cutting mechanism of a rotary pipe cutter is established based on the bond graph theory, the key dynamic parameters are determined by calculating the sensitivity, and the bifurcation mechanism of key parameters is revealed comprehensively by using the bifurcation diagram, the Lyapunov exponent diagram, the phase diagram and the time response diagram. …”
Get full text

Trust-Based Access Control Model from Sociological Approach in Dynamic Online Social Network Environment by Seungsoo Baek, Seungjoo Kim

“…Moreover, we provide novel criteria to evaluate trust factors such as sociological approach and evaluate a method to calculate the dynamic trust values. The proposed method can monitor negative behavior and modify access permission levels dynamically to prevent the indiscriminate disclosure of information.…”
Get full text