Signaling Device Research Articles

Electromagnetic Effect of an Alternating Current Traction Power Supply System with a High-Voltage Power Cord on Electrical Installations and Networks of Nontraction Consumers

In this paper, we ground a method for calculating switching overvoltages including the discharge of lightning currents into the contact network and into a high-voltage power wire (HVPW) to isolate the contact network in the power supply system with the HVPW. It was established that the protection of outdoor signaling, centralization, and blocking (SCB) devices from switching overvoltages in a power supply system with a high-voltage power wire (PSS HVPW) can be solved by connecting the reinforcement of the support foundations of the contact network to an extended artificial grounding conductor (GC) located under the ground and not connected to the rail track. The use of a GC, along with limitation of pulse overvoltages on the insulation of the contact network supports, solves the problem of ensuring reliable protection of the traction networks from short-circuit currents in the traction network. An algorithm for calculating the voltage of the zero sequence of phase voltages of overhead power lines (OPLs) with an isolated neutral relative to the ground when they are located in the zones of electromagnetic influence of the PSS with the HVPW was developed. Due to the electrical effect of the HVPW voltage, the induced voltage in an OPL is shown to reach values ​​that significantly exceed the levels allowed by regulatory documents. An analysis of the obtained results indicates the feasibility of placing OPL wires on free-standing supports outside the reserved strip. The need for such a solution is also determined by keeping the HVPW voltage from entering the OPL wires, with their possible breakage.

The Rise of Statism in Contemporary India: An Institutional Perspective

In the recent past, India has seen a rise of strong state which made its presence felt through se series of difficult measures such as demonetization, abolition of Tin-Talaq practice and article 370 even though none of these are particularly welfare enhancing for the majority population of India. I reckon that these measures merely act as signaling devices; signaling the emergence of a new kind of statism, different from the old, Nehruvian statism which prevailed in India for the larger part of its post-independence history. The usual interpretation for the new regime is given in terms of the state leaders’ ideology which essentially is a supply side explanation. While the supply side argument is a valid one, in this article, I focus on the demand side instead and analyze how the electoral success of the new regime can be seen as a rise in the demand for a strong state. In my view, the answer to this question lies in the relationship three fundamental institutions — state, community and market. I show that historically the state and the communities keep contesting over the legal framework critical for resource allocation. Both the institutions had their moments of wins and losses as unlike many Western societies, in India the state could not dominate the communities. I extend this argument to show that in the recent past, with the emergence of market for club-goods and rise in income inequality, the very balance of power between the state and communities got disturbed, leading to a rise in demand for strong state.

Overachieving and Obsessive Behavior as Signaling Devices under Career Concern

This paper provides an economic rationale for overachieving in non-professional activities in the labour market. The intrinsically motivated worker uses his achievement in the non-professional activity to signal his work ethic. When the worker‘s career concern is weak, he exerts no extra e¤ort on his non-professional activity. When the worker’s career concern is strong, however, his effort level for the non-professional activity can go beyond the bliss point. With a very strong career concern, an obsessive behavior can arise in equilibrium, as the intrinsically motivated worker may choose to sacrifice the professional activity for the non-professional one in an earlier stage of his career.

Design and Implementation of Optical Fiber Test Equipment

In order to meet the needs of the rapid development of optical fiber communication technology, combined with the thinking of the Internet of Things, a new idea of designing an optical fiber test equipment using Raspberry Pi is proposed. At the same time, the design of a multi-parameter measuring device for optical fiber signals based on Flask was completed.

Improved Resource Allocation in 5G MTC Networks

Effective resource allocation has always been one of the serious challenges in wireless communication. A considerable number of machine type communication (MTC) devices in 5G with variable quality of service (QoS) aggravates this challenge even further. Existing Resource allocation schemes in MTC are usually considering signal to noise ratio (SNR), which provides preference to MTC devices based on distance rather than their QoS requirements. This paper proposes a resource allocation scheme with dynamic priorities for MTC devices with multiple radio access technologies (RATs). The proposed resource allocation scheme has two main parts namely medium access and resource allocation. The medium access leverages the broadcast nature of wireless signal and MTC devices’ wait time to assign priorities using capillary band in a secure and integral way. At resource allocation, SNR, total induced transmission delay, and transmission-awaiting MTC devices are used to assign resources in the cellular band. The rumination of two-staged dynamic priorities in the proposed scheduling scheme brings significant performance improvements in outage and success probabilities. Compared to SNR-based schemes, the proposed mechanism performs well by expressively improving the outage and success probability by 20% and 30%, respectively.

Possibility of Increasing the Railway Capacity of the R106 Regional Line by Using a Simulation Tool

In this paper, emphasis is placed on the R106 regional line, given its relevance to the daily mobility of residents from the Zagorje region to the Croatian capital, Zagreb. The R106 railway, on the one hand, enables traffic to the railways of the neighbouring Republic of Slovenia, and on the other it is connection to the regional railway R201 Zaprešić - Varaždin and the international corridor M101 as a connection with Zagreb. Part of the R201 line is stock Zaprešić – Zabok, the section to which the R106 line connects and is currently being overhauled, electrified and equipped with modern signalling devices. Upon completion, it will be possible to utilize 50% more capacity of that section of the railway, but also to include it in the Zagreb sub-urban ring. This will increase mobility throughout the entire Zagorje region. Consequently, to meet the generated increase in demand, it will be necessary to increase the number of trains on line R106, but also to increase its existing capacity, as it will gain even more importance, both for regional traffic and for daily local migration of the population to go to business, administrative and other needs. In view of this, the paper describes mentioned specific circumstances, which give rise to the need for more detailed research and looks at the existing technical characteristics of the R106 line. Accordingly, additional measures are provided for rail and station security, whose impact on capacity will be determined through simulation using the Opentrack software package. The implementation of the proposed measures would contribute to increase the capacity of the R106 line, but also to increase its importance not only at regional level but also in the context of border and international traffic.

Experimental study on possibility of developing an electro-optical signaling device for detection of combustion in GTE combustion chambers

Experimental study on possibility of developing an electro-optical signaling device for detection of combustion in GTE combustion chambers

Development and evaluation of a video playing interface with headings and table of contents

ABSTRACT This study developed a video playing system that incorporated two signaling devices, headings and table of contents, for supporting video learning and navigation. An experiment was conducted for understanding the effects of the system on learning and navigation performance of the immediate and delayed tests. Thirty participants were randomly assigned to three conditions: the structure heading group with the two signaling devices, the heading group with the heading device, and the control group without any signaling device. The results revealed several significant findings. First, the two signaling devices can effectively help learners remember the structural information, but not detailed video content. Second, the table of contents may be detrimental for learning and navigation when learners have enough time to view the whole video. Third, the table of contents is helpful for learners to quickly grasp the structural knowledge when they just have a little time to view the video. These findings are discussed and a new video playing system prototype is proposed.

Use of simulation by modelling of conveyor belt contact forces

Abstract Intelligent conveyors include a large number of sensors and also signalling devices. So-called digital twin presents an advantage that creates a virtual image of a real conveyor. Simulation of the conveyor by simulation language can be an example of a tool of a conveyor virtual image. Simulation allows to test the proposed changes and in the case of functionality, to use the changes in the real operation of pipe conveyor. The paper presents the description of the simulated regression model of conveyor and realized simulation experiments within the regression model of pipe conveyor.

Adaptive Matching of the Radar Signal and Image Display Device Dynamic Ranges

This article presents nonlinear radar signal processing method to form an image of the Earth's surface. The method proposes to match the dynamic ranges of the received signal and of the visualization device. The essence of the method is adaptive nonlinear signal processing, which provides better local contrast of radar images and improves discrimination of individual objects. The computational complexity of the proposed algorithm is optimized and allows real-time implementation in the airborne computing systems with limited computational power. Objects with large RCS merged into large illuminated "spots"; their visibility on the surrounding background has been reduced, unwanted effects are due to the fact that the above algorithms have a single point effect. To overcome the problems, the «Retinex» algorithm is usually used. They do not take into account the local neighborhood of pixels; therefore, in cases where the image contains both highly dark and strongly light local areas, these algorithms cannot provide high-quality matching of dynamic ranges.

Pivots and Prestige: Venture Capital Contracts with Experimentation

We study venture capital financing with experimentation. An entrepreneur contracts with an investor and has private information about a project, which requires costly experimentation by both parties to succeed. In equilibrium, investors learn about the project from the arrival of exogenous information and from the entrepreneur's contract offers. The optimal contract features vesting and dilution, consistent with empirical evidence. Pivots and prestige projects emerge as signaling devices. Surprisingly, technological progress, which lowers the cost of experimentation or which increases the rate of learning, delays separation of types and worsens adverse selection.

Smart Healthcare System

Now a days, monitoring of various health parameters of patient at hospitals has become a widespread phenomenon. People are losing their lives in unanticipated way with heart attack by not finding symptoms of it before happening. We can decrease such unanticipated death rates by implementing the project named Patient Health Monitoring System. In this project we will design a system which monitors the patient health parameters like body temperature, heartbeat, blood pressure and so on by using Internet of Things (IoT). IoT is where data collection is done through various devices like sensors and data will be stored in Cloud where we can extract and analyze the data faster with efficiency by making interaction among them. The proposed technique screens the essential health parameters and transmits the information through a wireless communication which is additionally moved to a network by means of a wifi module. The information can be obtained anytime advancing the reception of the present status of the patient. The doctors, just as the caretaker are intimated quickly through a message service or an audio signaling device at the time of abrupt conditions or any sick indications. Moreover, complexity level, power consumption of our design System is low and is highly portable for healthcare monitoring of patients.

OPTIMISING TRAFFIC FLOW AT A SIGNALISED INTERSECTION USING SIMULATION

Traffic signal lights system is a signalling device located an intersection or pedestrian crossing to control the movement of traffic. The timing of traffic signal lights has attracted many researchers to study the problems involving traffic light management and looking for an inexpensive and effective solution that requires inexpensive changes in the infrastructures. A simple traffic lights system uses a pre-timed control setting based on the latest traffic data, and the setting could be manually changed. It is a common type of signal control and sometimes the setting was not correctly configured with the traffic data, thus leading to congestion at an intersection. Many mathematical strategies were applied to get an optimal setting. This study aims to model the traffic flow at Persiaran Kayangan and Persiaran Permai Intersection, Section 7, Shah Alam, as the case study, by using AnyLogic simulation software. The model was used to determine the best timings of traffic green lights that minimise the average time at the intersection and reduce traffic congestion. The findings showed that the best timings of traffic green lights for four directions at the intersection are 120 seconds, 75 seconds, 130 seconds and 100 seconds, respectively. These timings of green lights produced the lowest average time at the intersection (55.65 seconds).

Ultrasensitive and Highly Stretchable Multifunctional Strain Sensors with Timbre‐Recognition Ability Based on Vertical Graphene

AbstractStretchable/wearable strain sensors are attracting growing interest due to their broad applications in physical and physiological measurements. However, the development of a multifunctional highly stretchable sensor satisfying the requirements of ultrahigh sensitivity (able to distinguish sound frequency) remains a challenge. An ultrasensitive and highly stretchable multifunctional strain sensor with timbre‐recognition ability based on high‐crack‐density vertical graphene (VGr) is fabricated using an ultrasonic peeling (UP) method. It can distinguish frequencies of sounds higher than 2500 Hz. Detailed microscopic examinations reveal that their ultrahigh sensitivity stems from the formation of high‐density nanocracks in the graphitic base layer, which is bridged by the top branched VGr nanowalls. These nanocracks cut the VGr film into a large number of nanopieces, which increase the natural frequency of the sensors, enabling the sensors to distinguish the sound frequency. Demonstrations are presented to highlight the sensors' potential as wearable devices for human physiological signal and timbre detections. This is the first multifunctional highly stretchable strain sensor with timbre‐recognition ability.

Analiza ispravnosti zvučne signalizacije viličara u Republici Srbiji

SUMMARY: The paper explains the terms “indoor transport” and “forklift“, and presents the types of lethal injuries that can occur when using forklifts. The methodology is presented that was used to analyse the proper functioning of sound signalling devices used on forklifts. The descriptive method based on a checklist was used. The research was conducted on 127 forklifts of average age 15 years. It was determined that about 50% forklifts did not have a properly functioning device that emits sound during driving in reverse. On about 25% forklifts, the sirens were not functioning properly. The results of the analysis are discussed and further courses of action are proposed.

Traffic control optimization on isolated intersection using fuzzy neural network and modified particle swarm optimization

Traffic density in big cities due to congestion problems in various points of the city. This problem will occur worse at crucial times such as when rush hours and active working hours. The existence of a traffic light system as a traffic signalling device is a solution to overcome traffic congestion. Appropriate traffic light settings can minimize vehicle waiting times at intersections. The aim of this study is to optimize an adaptive traffic control that can adjust the conditions of traffic flow on certain road segments at isolated intersections. In this study optimization uses methods of Fuzzy Neural Network (FNN) and Modified Particle Swarm Optimization (MPSO). The optimization results will be compared with a regular method of Adaptive Neural Fuzzy Inference System without using MPSO. The simulation results show that the efficiency and adaptability of the combination method of FNN and MPSO are better than the Neural Fuzzy Controller without MPSO. A better result is also indicated by the value of Mean Squared Error (MSE) that decreased from 6.3299 becomes 2.065.

Automatic Vehicle Turn Indicator using Speech Recognition

Voice-controlled innovation is an energizing region of research that is utilized to help people in the mechanical control of manual frameworks. It is a part of human-communication that builds the advances in programmed discourse acknowledgment or ASR with the inventive advances of characteristic language handling or NLP. Wise frameworks, for example, Automatic Vehicle Signaling Systems, can likewise take into consideration adaptability in manual activities. In late investigations, analysts have investigated regular language control of manual tasks. In this paper we will research interfacing voice control activities with Arduino-based equipment stages that are utilized to structure the programmed sign highlights in a vehicle. The control system includes a voice recognition circuit for activating turn signal devices within the vehicle. The voice recognition circuit takes in input from the voice from the Google maps voice assistant. In some formats, a wireless hardware is provided while in other embodiments original equipment manufacture is accommodated.

Formulaic metadiscursive signalling devices in judgments of the Court of Justice of the European Union

This paper investigates how paragraph initial metadiscursive lexical items serve as signalling devices in text organisation of judgments of the Court of Justice of the European Union (ECJ). The results of that investigation demonstrate that those metadiscursive items both shape a particular method of reasoning used by the ECJ, and have an impact on how readers process those texts.
 
 Based on assumptions grounded in linguistics/legal linguistics that legal language is formulaic and repetitive in nature, the paper focuses on the use of repetitive items in ECJ judgments that perform metadiscursive rather than legal functions. Such items play a crucial role in the presentation of reasoning in judgments by signalling when and how various types of information occur in a discourse. The paper builds on established work in the field of linguistics that claims that legal reasoning can be understood from the utterances used in a text (Crystal and Davy, 1969), but importantly also considers the context in which judgments of the ECJ are produced and applied. Demonstrating the impact of language patterns on the legal reasoning of the ECJ is an inherently interdisciplinary exercise that involves the exploration of the cognitive dimension of the process. Thus, this paper contextualises the findings of the linguistic analysis carried out within the unique multilingual setting of the ECJ, using Koestler’s theory of creativity and cognitive theories of text processing as the basis of analysis.
 
 The analysis leads to the conclusion that not only do language patterns found in ECJ judgments shape the method of reasoning used by that Court, but also that those judgments are made up of ‘almost wholly automised’ sub-codes of grammar and syntax. This conclusion supports claims made in law and language studies and among EU law practitioners that ECJ judgments are created in a ‘lego-building block’ fashion. The linguistic research carried out here can thus be used to triangulate results of research from other fields to allow a more holistic understanding of supranational adjudication in the EU context to be developed. This in turn can offer new ways for understanding how a multilingual legal order functions, as well as allowing researchers to work towards limiting inconsistencies arising in such a legal order.

Разработка алгоритма создания стандартных образцов взрывчатых веществ

The analysis of requirements for standard samples (SS) of the explosives’ composition, aimed for improving of a determination (an identification) accuracy of the polluting emissions in the environment is given in the present work. As a result of the analysis of the requirements, defining the purpose of SS of the explosives’ composition, the functions of the latter have been established; there are the measurement assurance and ensuring of measurement procedures of an explosives content in solutions, air, aqueous media, soils, surfaces washing-off, special products and also in various fields of a science and an industry, engaged in the production, an adjustment, a research and an operation of equipment for carrying out the quantitative chemical analysis and controlling the objects of the environment (signaling devices). There has been formed the circle of potential consumers of new SS of the explosives’ composition, in which the enterprises of the industry of ammunition and special chemistry, subordinate organizations of the ministries of Russia (Ministry of Industry and Trade), higher educational establishments and also privately owned enterprises and organizations, carrying out the work related to the use of explosives are included; this circle imposes the requirements for SS quality and establishes a rating of the approved state SS (SSS). The purity degree of explosives (a base material fraction of total mass is no less than 99.5 % by mass) and an acetonitrile (used as a solvent) (a water content is no more than 0.03 % by mass) has been established in the course of carrying out of the analysis of the requirements for the initial materials. The ampoules, which are filled by means of the syringe and the glass medicine bottles of a general purpose were selected as a container in order to protect of SS specimen from the action of a complex of destructive factors, imposing the requirements for their storage conditions. In the course of studying of the necessity of SS material of the explosives’ composition in different groups of purpose the volumes of a material in each individual ampoule (bottle) have been established, that is 5 cm3 and 20 cm3. It has been developed the algorithm for producing of SS of explosives’ composition, meeting the aforementioned requirements.

Development of the simultaneous colorimetric enzymatic detection of sucrose, fructose and glucose using a microfluidic paper-based analytical device

Herein, we propose the first fabrication of a microfluidic paper-based analytical device (μPAD) as a simple, rapid and selective method for the simultaneous detection of sucrose, fructose and glucose for quality monitoring in the sugar industry. Multiplex detection of the three analytes was achieved by three detection zones designed on a single device. Each detection zone on the μPAD was modified with enzymes, chromogenic reagents and specific substrates. The enzymatic reactions between the specific enzymes, chromogenic reagents and their corresponding substrates yielded different colored products: brown for sucrose, blue for fructose and pink for glucose. All the reaction conditions were evaluated. The limits of detection were determined to be 0.9 mM, 0.8 mM and 0.4 mM for sucrose, fructose and glucose, respectively. The proposed μPAD successfully monitored sucrose, fructose and glucose within 11 min using a signal device and obtained a spike recovery of 100–103% for sucrose, 98–103% for fructose, and 100–102% for glucose. The μPAD was applied to detect sucrose, fructose and glucose in real samples, and the results were in good agreement with those obtained using high-performance liquid chromatography (HPLC). The proposed μPAD provides several advantages, including ease of use, fast results and low cost. Therefore, the developed μPAD is suitable for application in the sugar industry for monitoring sucrose, fructose and glucose in parallel.