The Physical Development and Physical Preparedness of the Students at the Age of 17-20 Years Old Who Go in for Track and Field

The impact of regular track and field trainings on student’s physical development and physical preparedness have been studied in the work. The study was conducted in the Kyrgyz-Turkish Manas University. İn total, 64 students at the age of 17-20 years have participated into the study. Applied methods: anthropometry, physiometry, the Stange-Hench tests. Sports and pedagogical control tests (on flexibility, strength, speed, endurance and agility) have been used as well.While evaluating students’ physical development, the second study of both ‘Sports’ and ‘Initial’ groups has revealed the high indices among boys according to the following criteria: body height and weight, chest bulk, vital capacity, chest excursion and the Stange-Hench tests. According to the heart rate criterion, the indices of the “Sports” group were reliably higher than those of the “Initial” group (P < 0.05). During the comparison of the second study results of girls’ physical development, more reliable distinctions have been found out (P < 0.05). When the physical development indices were under the study, the second examination exposed and proved that the flexibility of boys from ‘Sports’ group being higher on 7.1 cm (P < 0.05).The experimental materials provided in this article gave an opportunity for concluding that systematic track and field trainings had had a positive impact on the physical development indices, to be precise on the functional condition and physical preparedness level of boys and girls at the age 17-20 years old.

Automation of Large Parametric Flow Assurance Analyses in the Cloud

The objective of this study was to determine the highest flowrate through a client's existing flowline without top-of-line condensation rates exceeding a critical value of 0.25 g/m2.s. Automation of the workflow allowed a large combination of operating conditions to be analysed within a shorter timeframe than a traditional flow assurance analysis process. A multiparameter case matrix was developed to analyse the full range of process and environmental variables. A proprietary multiphase flow assurance software in the cloud was used to develop a reference case model. Then a software script was developed to read in the reference case model's code and produce input files for 1,080 cases. All cases were run within 30 minutes in the cloud. Another software script then extracted key data from the 1,080 output files into a single Excel spreadsheet to enable data visualisation and identification of a simple and effective flow rate criterion to limit condensation rates. Automation of the workflow allowed all combinations of variables to be analysed within a shorter timeframe compared to the traditional flow assurance analysis process, which usually analyses a somewhat limited number of suspected worst-case scenarios selected based on engineering judgement. The bulk data resulting from the automated workflow enabled a single integrity limit criterion to be applied with a high level of confidence, namely the fluid temperature measured at a subsea corrosion probe. This simplified integrity limit allows the operators to easily maximise production for any combination of process and environmental conditions, whilst maintaining confidence that they are not exceeding the critical condensation rate.

Simulation study of the traffic circle system with adaptive traffic lights

In this paper, we propose a cellular automaton model to investigate the traffic flow characteristics in the traffic circle system with adaptive traffic lights control. The traffic flow in the circulating lane was evaluated and depending on it the traffic lights lit red in the entry lanes to reduce the coming traffic. The density and the satisfaction rate were used as feedback to control the traffic flow in the circulating lane. It is found that both parameters (i.e. the density and the satisfaction rate in the circulating lane), if they are used as a criterion to control the coming traffic from entry lanes, promote the throughput in the traffic circle system. Traffic flow for the traffic circle system without using the traffic lights was investigated. In this case, we find that the traffic flow in the system is characterized by three phases, namely, gridlock, congestion, and free flow. The gridlock phase is predominant over the other phases. Furthermore, with the use of the adaptive traffic lights, the gridlock phase has vanished and the maximum current, jammed, and congestion phases take place. The density criterion shows good performance as compared with the satisfaction rate criterion in terms of the lengths of the red cycle. The capacity is also investigated. The space-time configurations were given to understand the microscopic interaction between vehicles.

Investigation of the fatigue behavior of notched reinforced thermoplastics

Understanding and modeling of fatigue damage and behavior in short glass fiber reinforced thermoplastics is an important issue in order to improve material processing and the design of composite parts for the industry. The present work aims at a more precise description of the fatigue damage mechanisms and the establishment of a simple, yet efficient, durability criterion. Observations bring new insights on the fatigue damage mechanisms: fiber failure triggered by fretting fatigue and crack propagation by intra-spherulitic failure in their equatorial plane. Finally, a cyclic strain rate criterion is introduced for notched specimens and the identification of a behavior model is performed for later implementation of the durability criterion.