scholarly journals The Effect of Low Friction in Pavement Due to Floods and High-speed Vehicles in Increasing the Number of Rescue Vehicles' Driving Accidents

2020 ◽  
Vol 6 (1) ◽  
pp. 29-38
Author(s):  
Mohammad Mehdi Khabiri ◽  
◽  
Zohrah Ghaforifard ◽  
Keyword(s):  
Natural Disasters ◽  
High Speed ◽  
Traffic Accidents ◽  
Probabilistic Method ◽  
Geometric Design ◽  
Critical Parameters ◽  
Rescue Operation ◽  
Curve Length ◽  
Speed Parameter ◽  
The Right

Background: The rescue operation is dangerous during floods when the street surface is wet and the rescue vehicles moving fast. Rural roads are known with a high percentage of run-off-the-road crashes and accidents, mostly affected by the unsuitable and inappropriate speed of the car and failure to keep a safe side distance from the highway alignment. Determining the length of the vertical curve and the stopping distance depends on the speed parameter in the geometric design. This parameter depends on the traffic flow and the vehicle driver. Materials and Methods: The calculation of distance visibility, especially in the vertical and horizontal curves, has a significant role in the geometric design of roads and the safety of roads and drivers. This study investigates changes in two critical parameters of friction surface of pavement and vehicles’ speed on the probability of accidents. In the present study, by changing the speed parameter, namely, increasing speed and decreasing friction, and reducing the distance of vision, the required vertical curve is calculated and compared with the existing curve length. Thus, when the curve length does not match the required arch length, the accident’s probability increases. Results: One of the study’s findings indicates that with a 5% decrease in the friction coefficient of the vertical curve, the probability of accident increases by about 20%. The results show that an approximately 10% increase in speed can raise the likelihood of a crash by 25% on average. Conclusion: The use of accident reduction-related strategies for rescue vehicles and ambulances will help the victims affected by natural disasters. The results showed that choosing the right speed is very important in flooded wet streets. Driving fast to speed up the relief operation not only increases the risk of traffic accidents but also slows down the relief of natural disasters. The results indicate the proper performance of the model created by the probabilistic method. Besides, this model’s use has the advantage of correctly identifying the factors affecting the increase in risk. Also, it helps to take the right measures to increase safety in the relief of natural disasters, especially floods.

scholarly journals Studi Epidemiologi Kejadian Kecelakaan Lalu Lintas Di Kota Pontianak

2018 ◽  
Vol 4 (2) ◽  
pp. 90
Author(s):  
Iskandar Arfan ◽  
Wulandari Wulandari
Keyword(s):  
Traffic Accident ◽  
High Speed ◽  
Traffic Accidents ◽  
Design Research ◽  
Public Awareness ◽  
Sampling Technique ◽  
Cross Sectional ◽  
Purposive Sampling ◽  
Cross Sectional Design ◽  
The Right

Abstract: Epidemiological Study Events Of Traffic Accidents In Pontianak City. The number of traffic accidents in Pontianak City in 2014 is 477 cases, 2015 by 454 cases, in 2016 as many as 542 cases. Important research is done to know the main cause faktors of the accident so that policy makers can pursue the right and maximum intervention. The purpose of this research is to know the epidemiology of traffic accident incident on the motorcycle and cars in Pontianak City. The research used descriptive cross sectional design. Research sample 94 people who have experienced Traffic Accident the last 3 months recorded in data Polresta Pontianak with sampling technique using purposive sampling. The results showed that most of the frequency distribution of epidemiological variables in traffic accidents were as follows: age 26-45 years (45.7%), male gender (70.2%), no driver license (82%). Drivers are driven by high-speed driving habits (67%), vehicle drivers are not routinely caring for vehicles (44.7%), environmental faktors are mostly drivers in dark road conditions (17%). It is expected to raise public awareness about safety driving measures and increase the strength of traffic police and volunteers at crowded traffic points to control traffic especially over the weekend as well as strict regulation of drivers’ faktors, especially the ownership of driving licenses, vehicle maintenance, and improvement of road environmental facilitiesAbstrak: Studi Epidemiologi Kejadian Kecelakaan Lalu Lintas Di Kota Pontianak.  Angka kecelakaan lalu lintas di Kota pontianak terus menerus terjadi peningkatan setiap tahun. tahun 2014 sebanyak 477 kasus, tahun 2015 sebanyak 454 kasus dan tahun 2016 sebanyak 542 kasus, penelitian penting dilakukan untuk mengetahui faktor penyebab utama kecelakaan sehingga pengambil kebijakan dapat mengupayakan intervensi yang tepat dan maksimal. Tujuan penelitian  untuk mengetahui epidemiologi kejadian kecelakaan lalu lintas pada pengendara motor dan mobil di Kota Pontianak. Penelitian menggunakan desain cross sectional deskriptif. Sampel penelitian 94 orang yang pernah mengalami kecelakaan lalu lintas 3 bulan terakhir yang tercatat di data Polresta Kota Pontianak dengan teknik pengambilan sampel menggunakan purposive sampling. Hasil penelitian menunjukan sebagian besar distribusi frekuensi variabel epidemiologi pada kasus kecelakaan lalu lintas adalah sebagai berikut: usia 26-45 tahun (45.7%), jenis kelamin laki-laki (70.2%), tidak memiliki SIM (82%). Berdasarkan faktor pengemudi sebagian besar memiliki kebiasaan berkendara dengan kecepatan tinggi (67%), faktor kendaraan sebagian besar pengemudi tidak rutin merawat kendaraan (44.7%), faktor lingkungan sebagian besar pengemudi dalam kondisi jalan gelap (17%). Diharapkan meningkatkan kesadaran masyarakat tentang langkah-langkah keselamatan berkendara dan meningkatkan kekuatan polisi lalu lintas dan sukarelawan di titik-titik lalu lintas yang padat untuk mengontrol lalu lintas terutama selama akhir pekan serta pengaturan ketat dari faktor pengemudi khususnya kepemilikan surat ijin mengemudi, perawatan kendaraan, dan perbaikan fasilitas lingkungan jalan. 

Influence of social media marketing towards purchase of residential property

2019 ◽  
Vol 118 (6) ◽  
pp. 145-149
Author(s):  
A. Ekanthalingam ◽  
Dr. A. Gopinath
Keyword(s):  
Social Media ◽  
High Speed ◽  
Word Of Mouth ◽  
Marketing Strategies ◽  
Social Media Marketing ◽  
Purchase Decision ◽  
Residential Property ◽  
Customer Delight ◽  
The Right ◽  
Potential Customers

‘Marketing’ is not just an activity. It is a process, a philosophy and a phenomenon. The evolution of marketing has produced tremendous benefits to business and end consumers. The innovation in this field has been steady and yet at high speed. From ‘word of mouth advertising’ which was the only option earlier we are now at the mercy of what consumers are sharing about their experience on the internet. Social Media has become more powerful than what we think and this article shows how we can leverage this to benefit the top-line and customer delight. We dive deep to understand the influence Social Media can create towards purchase of residential property. As much complex it is to make the purchase decision of a property, it is equally difficult for marketers to send the right message to their target audience. Through this article, we are trying to see how marketers have transformed their traditional marketing strategies to address the needs of the millennial population, who are the most potential customers for property purchase.

Fundamental Considerations for CDM Failure in 90nm Products

2006 ◽  
Author(s):  
Nobuyuki Wakai ◽  
Yuji Kobira ◽  
Hidemitsu Egawa ◽  
Masayoshi Tsutsumi
Keyword(s):  
Breakdown Voltage ◽  
High Speed ◽  
Gate Oxide ◽  
Critical Parameters ◽  
Protection Device ◽  
Oxide Breakdown ◽  
Technology Products ◽  
Charged Device ◽  
Device Size ◽  
Fundamental Consideration

Abstract Fundamental consideration for CDM (Charged Device Model) breakdown was investigated with 90nm technology products and others. According to the result of failure analysis, it was found that gate oxide breakdown was critical failure mode for CDM test. High speed triggered protection device such as ggNMOS and SCR (Thyristor) is effective method to improve its CDM breakdown voltage and an improvement for evaluated products were confirmed. Technological progress which is consisted of down-scaling of protection device size and huge number of IC pins of high function package makes technology vulnerable and causes significant CDM stress. Therefore, it is expected that CDM protection designing tends to become quite difficult. In order to solve these problems in the product, fundamental evaluations were performed. Those are a measurement of discharge parameter and stress time dependence of CDM breakdown voltage. Peak intensity and rise time of discharge current as critical parameters are well correlated their package capacitance. Increasing stress time causes breakdown voltage decreasing. This mechanism is similar to that of TDDB for gate oxide breakdown. Results from experiences and considerations for future CDM reliable designing are explained in this report.

Hard Nano-Crystalline Coatings for Cutting Tools

2007 ◽  
Vol 567-568 ◽  
pp. 185-188 ◽  
Author(s):  
Miroslav Piska
Keyword(s):  
High Speed ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Dry Cutting ◽  
Nano Crystalline ◽  
The Right ◽  
Machining Productivity ◽  
Hard Cutting ◽  
Cutting Tool Materials

Modern trends in metal cutting, high speed/feed machining, dry cutting and hard cutting set more demanding characteristics for cutting tool materials. The exposed parts of the cutting edges must be protected against the severe loading conditions and wear. The most significant coatings methods for cutting tools are PVD and CVD/MTCVD today. The choice of the right substrate or the right protective coating in the specific machining operation can have serious impact on machining productivity and economy. In many cases the deposition of the cutting tool with a hard coating increases considerably its cutting performance and tool life. The coating protects the tool against abrasion, adhesion, diffusion, formation of comb cracks and other wear phenomena.

Blow/trauma to the chest and sudden cardiac death: Commotio cordis and contusio cordis are leading causes

2018 ◽  
Vol 58 (2) ◽  
pp. 93-96 ◽  
Author(s):  
Lydia Krexi ◽  
Mary N Sheppard
Keyword(s):  
Sudden Cardiac Death ◽  
Cardiac Death ◽  
Traffic Accidents ◽  
Left Ventricular ◽  
Young Males ◽  
Contusio Cordis ◽  
Commotio Cordis ◽  
Forensic Practice ◽  
Acute Changes ◽  
The Right

Background In forensic practice, a blow to the chest can lead to sudden cardiac death (SCD). Commotio cordis and contusio cordis are leading causes. Methods From a database of 4678 patients who suffered from SCD, we found three patients with commotio cordis and two patients with contusio cordis. All the patients were examined macroscopically and microscopically and had negative toxicology screen. Results The three patients who died due to commotio cordis were young males (16, 23 and 38 years old). The circumstances of death were: a blow to the chest by a football, by a friend during a party and during an assault. The hearts were completely normal at autopsy. The two patients who had contusio cordis were older males (42 and 63 years old). Both patients died during traffic accidents. At autopsy, one had significant contusion over the left ventricle, and the second had contusion over the right ventricle. Conclusion This study indicates that a blow to the chest is very important to document in the circumstances of death, and a detailed history is vital. It raises the left ventricular intra-cavitary pressure, leading to commotio cordis with immediate death with a normal heart. Blunt chest trauma can cause direct myocardial lesions, with acute changes leading to contusio cordis.

scholarly journals HAK MENGUASAI NEGARA, PERSPEKTIF INDONESIA SEBAGAI NEGARA HUKUM

2008 ◽  
Vol 38 (1) ◽  
pp. 58
Author(s):  
Imam Koeswahyono
Keyword(s):  
Natural Disasters ◽  
Legal Pluralism ◽  
State Intervention ◽  
The State ◽  
The Right ◽  
Significant Effort

Abstrak The right of management of the state since early Dutch colony until thisrecent transition era has became terminology that been debated. Thatcontroversy persists by the strength of the state intervention through the vitalnatural resources for agrarian nations beside biased articulation indiscourse but also on state right in praxis terms. Those situations haveprolonged even had begun any transformation in politic's paradigm of priorNew Order (Orde baru) to the recent transition era and had not impacted tothe reconceptualization through that state right and praxis. Under the authortought it needs significant effort which is based under legal pluralism,decentralization by the participative of legislative drafting method alsosustainability and public anccountability principles. Without considering tothose factors the author remark it would arise mis-perceptive through theright managament of the state, latent/massive conflict over regions thatcontra productive to development progr.ess and such natural disasters

Research on Safety Vehicle Distance Recognition Based on Stereo Vision and DSP

2013 ◽  
Vol 333-335 ◽  
pp. 805-810 ◽  
Author(s):  
Rong Bao Chen ◽  
Ning Li ◽  
Hua Feng Xiao ◽  
Wei Hou
Keyword(s):  
Stereo Vision ◽  
Traffic Safety ◽  
Traffic Accidents ◽  
Intelligent Transportation ◽  
Research Area ◽  
Measurement Range ◽  
Vehicle Speed ◽  
Target Vehicle ◽  
Operation Rate ◽  
The Right

With the development of economy, there are an increasing number of cars as well as traffic accidents, thus intensifying the need to take measures to reduce traffic accidents and protect the safety of life and property. Vehicle distance is one of the most important indexes of traffic safety. The measurement of safety vehicle distance has become an increasingly hot research area of intelligent transportation. Through analyzing the basic principle of stereo vision and calibrating the parameters of the CCD sensors both inside and outside, this paper comes up with a method to measure the former vehicle distance based on stereo vision and DSP. Once the vehicle speed and distance form a non-security association, it will give a warning, and upload data or force speed-limiting. According to the different coordinates of the obtained images of the target vehicle from the left and the right sensor, this method can identify feature points, calculate distance to the target vehicle, and analyze the security of vehicle distance. The experimental results show that this method has wide measurement range, high measurement accuracy, and fast operation rate, thus it can meet the actual needs of the measurement of safe vehicle distance in intelligent transportation.

Simulation of Multi-Stage Compressor at Off-Design Conditions

2017 ◽  
Author(s):  
Feng Wang ◽  
Mauro Carnevale ◽  
Luca di Mare ◽  
Simon Gallimore
Keyword(s):  
Mass Flow ◽  
High Speed ◽  
Eddy Viscosity ◽  
Turbulence Models ◽  
Viscosity Model ◽  
Eddy Viscosity Model ◽  
Multi Stage ◽  
Pressure Profiles ◽  
Non Linear ◽  
The Right

Computational Fluid Dynamics (CFD) has been widely used for compressor design, yet the prediction of performance and stage matching for multi-stage, high-speed machines remain challenging. This paper presents the authors’ effort to improve the reliability of CFD in multistage compressor simulations. The endwall features (e.g. blade fillet and shape of the platform edge) are meshed with minimal approximations. Turbulence models with linear and non-linear eddy viscosity models are assessed. The non-linear eddy viscosity model predicts a higher production of turbulent kinetic energy in the passages, especially close to the endwall region. This results in a more accurate prediction of the choked mass flow and the shape of total pressure profiles close to the hub. The non-linear viscosity model generally shows an improvement on its linear counterparts based on the comparisons with the rig data. For geometrical details, truncated fillet leads to thicker boundary layer on the fillet and reduced mass flow and efficiency. Shroud cavities are found to be essential to predict the right blockage and the flow details close to the hub. At the part speed the computations without the shroud cavities fail to predict the major flow features in the passage and this leads to inaccurate predictions of massflow and shapes of the compressor characteristic. The paper demonstrates that an accurate representation of the endwall geometry and an effective turbulence model, together with a good quality and sufficiently refined grid result in a credible prediction of compressor matching and performance with steady state mixing planes.

scholarly journals CONDITIONS FOR FORMING THE TEACHER'S DIGITAL COMPETENCY IN THE POSTGRADUATE EDUCATION

2019 ◽  
Author(s):  
Iryna Vorotnykova
Keyword(s):  
Professional Development ◽  
High Speed ◽  
Postgraduate Education ◽  
International Standards ◽  
National Standards ◽  
It Infrastructure ◽  
Digital Competence ◽  
Postgraduate Students ◽  
Digital Competency ◽  
The Right

The article defines the conditions for the formation of a teacher's digital competence in postgraduate education. The analysis of the international standards of UNESCO, the European digital competence framework for citizens (DigComp 2.1 and educators (Digcompedu), and the generalization of the criteria for the definition and assessment of digital competence among teachers. The results of the study are based on the experience of improving the skills of teachers of the city of Kyiv using empirical methods: observation, survey (questionnaires, interviews). The questionnaire allowed to identify the main inquiries of teachers regarding the formation of individual trajectories of professional development, including in The conditions of the formation of the digital competence of teachers in the system of postgraduate pedagogical education are determined: the digitalization of education, the availability of legal documents on standards and requirements for the teacher's digital competency (international, institutional, national), the need to develop and implement the criteria for the development of digital competency teachers (tests, questionnaires, etc.), introduction of international, domestic projects on the use of ICT, readiness of postgraduate students Go to ensure the formation of the digital competency of teachers (IT infrastructure, availability of scientific, educational and environmental resources), IT infrastructure of the educational institutions in which the teacher works (hardware, software, including digital laboratories, connection to high-speed Internet, personalized informational and educational environments, etc.). In addition, an important condition is determined by the teacher's motivation to continuous professional development and self-assessment of his digital competence. It is proved that the development and implementation of national standards for teacher's digital competence, giving him the right to decide for themselves in which institutions to improve their qualifications, promote the introduction of new approaches to constructing individual paths for developing digital competency of teachers.

scholarly journals Development of a Road Condition Information System using Augmented Reality Technology on Smartphones

2020 ◽  
Vol 10 (2) ◽  
pp. 49-55
Keyword(s):  
Information System ◽  
Augmented Reality ◽  
High Speed ◽  
Human Error ◽  
Traffic Accidents ◽  
Road Traffic ◽  
Data Conversion ◽  
The Road ◽  
Road Condition ◽  
Augmented Reality Technology

Recently, accidents involving ground transportations are getting worse and more serious. Indonesian State Police (Korlantas POLRI) recorded the number of accidents in 2018 as many as 109,215 accidents. The number has incresed 4.69 percent compared to 2017 as many as 104,327 events. Road traffic accidents are caused by human error, the driver in this case. The driver's mistake is influenced by several factors, one of them is they cannot expect the road condition when they drive a vehicle at high speed. To solve this problem, drivers need information that can show road conditions. So, we present a new approach for detecting damaged roads by applying augmented reality technology. This research produces a road condition information system to help drivers get information about road conditions via smartphone. This system uses augmented reality technology with a markerless GPS Based Tracking method. The development of this system requires several stages such as collecting the data, data conversion, data classification, and views road condition. The researchers gathered the road condition data from the Public Work Department Semarang. This department itself undertakes a task to control the road condition in Semarang The trial of this system includes all drivers in Semarang city. Based on the results of the questionnaire responded to by 93 respondents, this test obtained an average value of 68%. So this system gets a pretty good response from the driver. Through this system, all drivers can avoid the damaged road condition which can cause traffic-congested and accident.

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