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Innovative approach to traffic safety education: TRAFSAF project 交通安全教育的创新方法:交通安全基金会项目
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2201083p
A. Petrović, N. Gospic, N. Arsic, Osman Lindov
{"title":"Innovative approach to traffic safety education: TRAFSAF project","authors":"A. Petrović, N. Gospic, N. Arsic, Osman Lindov","doi":"10.5937/tehnika2201083p","DOIUrl":"https://doi.org/10.5937/tehnika2201083p","url":null,"abstract":"The problems of traffic safety and the profession of traffic safety are universal problems that require constant strengthening of the system of education and innovation both in syllabuses and in technologies and techniques applied in the field of traffic safety. The purpose of the innovative approach to the education program is to educate undergraduate and graduate students in the field of traffic safety, in accordance with the needs of society, which should provide an interdisciplinary and multidisciplinary approach to safety of all road users, technical solutions and social response to traffic accidents. Traffic safety problems are complex problems, which is why the competencies and skills acquired by engineers should provide knowledge and a deeper understanding of risk while strengthening the applied and practical skills. Innovative study programs must have a common basis for all directions, with a deep knowledge of mathematics, physics and mechanics with an emphasis on a holistic and interdisciplinary approach to the use of engineering in improving traffic safety.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71130520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Selection of key indicators for efficient organization of occupational safety affairs in the business system: AHP approach 业务系统中有效组织职业安全事务的关键指标选择:层次分析法
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2203383v
B. Vranješ, Mile Vajkić, Lutvo Haznadarević, Milena Stanković, E. Stojiljković
{"title":"Selection of key indicators for efficient organization of occupational safety affairs in the business system: AHP approach","authors":"B. Vranješ, Mile Vajkić, Lutvo Haznadarević, Milena Stanković, E. Stojiljković","doi":"10.5937/tehnika2203383v","DOIUrl":"https://doi.org/10.5937/tehnika2203383v","url":null,"abstract":"The choice of an adequate way of organizing occupational safety in the production system is crucial for the efficient implementation of all activities and achieving the set goals of occupational safety and health. The decision-making process for the employer is often extremely complex due to the presence of competitive and conflicting goals among the available criteria or alternatives. The application of the AHP approach is a suitable tool to help the employer in the decision-making process in choosing how to organize occupational safety. The selection of criteria used for the selection of alternatives for the organization of occupational safety and health was performed after the analysis of three different organizational models of management of protection in business systems from different industries. The conducted AHP analysis identified the organization of occupational safety and health independently in the business system in a special organizational unit (service, sector, department, etc.) as the optimal alternative from the perspective of the employer as a decision maker.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71130610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of mold design for aluminothermic welding of railway tracks by software simulation 铁路轨道铝热焊模具设计的软件仿真优化
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2203311d
A. Delić, V. Manojlović, M. Sokić, M. Gavrilovski
{"title":"Optimization of mold design for aluminothermic welding of railway tracks by software simulation","authors":"A. Delić, V. Manojlović, M. Sokić, M. Gavrilovski","doi":"10.5937/tehnika2203311d","DOIUrl":"https://doi.org/10.5937/tehnika2203311d","url":null,"abstract":"The aluminothermic welding process of rail welding has been used to join railway rails for more than a century. The benefits of this procedure include its flexibility, compactness of the weld, and ease of execution. It is not necessary to bring in outside energy to complete the process. It is provided by the exothermic effect of the chemical reactions of the aluminothermic mixture's constituents. The design of the mold with the pouring system, which should ensure even pouring of thermal steel, without turbulence, then even heat dissipation or cooling in order to obtain appropriate micro and macro structure of steel, without internal and external defects, is an important element for making a welded joint of the required quality. As a result, the mold's design was constantly evolving, requiring the use of costly experimental methods in industrial settings. Today, software packages are used to simulate traditional casting processes that can be used in the casting of thermite steel during the manufacture of welded railway joints, thereby avoiding costly and time-consuming industrial tests. The simulation of casting thermite steel in the mold cavity, i.e. in the weld joint for the 49E1 rail, using the NovaFlow & Solid CV software package, is presented in this paper. The simulation results were validated by establishing test welded joints in industrial settings and testing their quality in accordance with the EU 13740-1: 2017 standard.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71130646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis of constructive solutions of resilient wheels of light railway vehicles: Directions of development and use from the view of vibroacoustic performance 轻轨车辆弹性车轮构造方案分析:从振动声性能的角度看其发展与使用方向
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2204447s
Z. Stojanovic, E. Desnica, M. Đurđev, Sanja Stanisavljev, Spasoje Erić
{"title":"Analysis of constructive solutions of resilient wheels of light railway vehicles: Directions of development and use from the view of vibroacoustic performance","authors":"Z. Stojanovic, E. Desnica, M. Đurđev, Sanja Stanisavljev, Spasoje Erić","doi":"10.5937/tehnika2204447s","DOIUrl":"https://doi.org/10.5937/tehnika2204447s","url":null,"abstract":"The paper analyzes the constructive and usable characteristics of resilient wheels with rubber blocks and rubber \"V\" ring used on light railway vehicles in urban traffic conditions in order to reduce vibration and noise. These vibrations and noise have an impact on passenger comfort and create serious problems for buildings and residents near city transit lines. The sources of noise generated by train wheels due to their vibrations and possible ways of transmitting noise caused by wheel/rail interaction are stated. The paper examines and analyzes the results of previous research that have give contribution to a better understanding and adoption of the resilient wheel structure and rubber parameters in order to achieve the best noise and vibration reduction effects. Through the paper, it was found that resilient wheels can effectively reduce the rolling noise of wheel on the track by a value of 3[dB] and significantly reduce ground vibrations in a certain frequency range.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71131390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of the possibility of implementing photovoltaic systems as an auxiliary energy source in the power supply of electric vehicles intended for urban areas 分析实施光伏系统作为城市地区电动汽车供电辅助能源的可能性
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2204459s
Aleksandar Stjepanović, Miroslav Kostadinovic, Z. Curguz, Z. Stjepanovic, Goran Jauševac, Goran Kuzmic
{"title":"Analysis of the possibility of implementing photovoltaic systems as an auxiliary energy source in the power supply of electric vehicles intended for urban areas","authors":"Aleksandar Stjepanović, Miroslav Kostadinovic, Z. Curguz, Z. Stjepanovic, Goran Jauševac, Goran Kuzmic","doi":"10.5937/tehnika2204459s","DOIUrl":"https://doi.org/10.5937/tehnika2204459s","url":null,"abstract":"The paper analyzes the possibilities of implementing a photovoltaic system as an additional energy source in electric vehicles. Electric vehicles have the ability to charge batteries via the power grid. A significant number of vehicles in urban areas serve as a daily means of transportation to go to work. Most of the time, vehicles are parked, which opens up opportunities for the use of solar radiation energy through conversion into electricity, and the use of that energy to recharge the built-in batteries and thus increase the range of movement of vehicles.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71131434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Digital battery capacity meter with battery charger 数字电池容量计与电池充电器
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2205571d
Miloš Đaletić, Nada Ratković-Kovačević
{"title":"Digital battery capacity meter with battery charger","authors":"Miloš Đaletić, Nada Ratković-Kovačević","doi":"10.5937/tehnika2205571d","DOIUrl":"https://doi.org/10.5937/tehnika2205571d","url":null,"abstract":"In this paper, a digital battery capacity meter with an integrated battery charger is developed and built. Also, the software used to control and monitor the microcontroller of the device from the PC has been developed, so that the data obtained from measurement can be processed and compared further using one of the available spreadsheet software packages. Due to the widespread use of electrochemical energy sources, whether primary ones or of the battery type, it is extremely important to know and measure their actual capacity. Primary cell capacity measurement helps in selecting the most appropriate solution (with respect to the cost/ capacity ratio) for powering portable or mobile devices. By measuring the capacity of the used battery, its condition and capability of further exploitation can be determined. Measuring capacity can provide verification of the data in the manufacturer's specifications, for example, in order to compare measurements and confirm statements in technical documentation.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71131795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Limestone of 'Međeđe': Nikšić as filler in various industries 'Međeđe'的石灰石:Nikšić作为各种工业的填料
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2202175r
D. Radulovic, D. Todorović, V. Jovanović, Sonja Milićević, Branislav Ivošević, Darko Božović
{"title":"Limestone of 'Međeđe': Nikšić as filler in various industries","authors":"D. Radulovic, D. Todorović, V. Jovanović, Sonja Milićević, Branislav Ivošević, Darko Božović","doi":"10.5937/tehnika2202175r","DOIUrl":"https://doi.org/10.5937/tehnika2202175r","url":null,"abstract":"This paper presents the results of testing the possibility of using limestone from the \"Međeđe\" - Nikšić deposit in different industries. During the examination, the coarse moisture, chemical composition, granulometric composition, bulk and particle density, degree of whiteness, oil and water absorption, granulometric composition of micronized samples and specific surface area were determined. All tests were performed on 8 samples taken from different parts of the deposit and the mean values of the obtained results are presented here. Based on the physico-chemical characteristics, it can be stated that this limestone has a high content of CaO and CaCO3 of 99.01%, as well as a relatively low content of MgO of 0.32% and a low content of SiO2 of 0.26% and alkali and R2O3, with also low content of heavy metals, which is very favorable for limestone. With these physico-chemical properties, this limestone can be used in the following industries: paints and varnishes, paper, rubber and PVC, foundry and foundry industry, sugar industry, metallurgical purposes, glass production, animal feed production and mineral fertilizer production. A serious defect of \"Međeđa\" limestone is the low degree of whiteness, which does not exceed 89.6%, which prevents its use in the pharmaceutical and chemical industries, while the relatively high content of K2O, Fe and Mn prevents its use in calcification of acid soils.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71130144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Technology for manufacturing of shaper milling cutters by 3+2 grinding proces on horizontal CNC milling center 卧式数控铣削中心3+2磨削加工成形铣刀工艺研究
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2203321m
M. Milutinović, G. Vasilić, S. Zivanovic, B. Kokotović, Nikola Slavković
{"title":"Technology for manufacturing of shaper milling cutters by 3+2 grinding proces on horizontal CNC milling center","authors":"M. Milutinović, G. Vasilić, S. Zivanovic, B. Kokotović, Nikola Slavković","doi":"10.5937/tehnika2203321m","DOIUrl":"https://doi.org/10.5937/tehnika2203321m","url":null,"abstract":"The paper presents the technology of making brazed shaper milling cutters and with special reference to 5-axis grinding process (making of profile blades) on CNC grinding machine tool. Based on the analysis of the kinematics of the 5-axis grinding process, a new concept of profile milling tool production by a 3+2 axis grinding process on horizontal milling center was established. By Applying new concept, one tooth of profile tool was machined by grinding process. By obtained results, new approach for manufacturing of profile milling tools was verified.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71130750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First order design optimization of the GNSS network Mandici GNSS网络的一阶设计优化
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2204421b
Vladan Bošković, Milutin Pejović
{"title":"First order design optimization of the GNSS network Mandici","authors":"Vladan Bošković, Milutin Pejović","doi":"10.5937/tehnika2204421b","DOIUrl":"https://doi.org/10.5937/tehnika2204421b","url":null,"abstract":"The paper describes the methodology for selecting the optimal solution for the design of the geodetic GNSS network for the Mandici landslide. For the previously defined functions of the goal of precision and reliability of the geodetic network, the optimal number and arrangement of GNSS network vectors was determined applaying first order design optimization. The optimization determined the design of the geodetic GNSS network, which contains 11 base vectors between 6 points of the network, the realization which requires 6 measurement sessions, which is 4 sessions shorter than the initial design.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71131227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Basic ISO standards related to the quality and safety/security in health care institutions 与卫生保健机构的质量和安全/保障有关的基本ISO标准
Tehnika Pub Date : 2022-01-01 DOI: 10.5937/tehnika2205635p
Z. Pendić, Sanja Pendić-Polak, Ana Milijić, B. Jakovljevic, Željko Marković, Vesna Reljić-Ćurić, Sanja Ivošević
{"title":"Basic ISO standards related to the quality and safety/security in health care institutions","authors":"Z. Pendić, Sanja Pendić-Polak, Ana Milijić, B. Jakovljevic, Željko Marković, Vesna Reljić-Ćurić, Sanja Ivošević","doi":"10.5937/tehnika2205635p","DOIUrl":"https://doi.org/10.5937/tehnika2205635p","url":null,"abstract":"Health systems are under significant pressure in many countries. Every day, with the introduction of new methods/techniques, expensive equipment of high technological value, the latest very expensive drugs... the price of health care is growing much faster than the growth of the national product and the most developed countries, despite the fact that in many countries the percentage of health expenditures in the national product is growing. Funding constraints in health systems are evident even in wealthy countries. The cost of health care is significantly influenced by: the increase in the number of the population, changes in the age structure of the population, constant demands for increasing the level of quality of health services, as well as an increase in the demand for new services. The application of international management standards in healthcare institutions and in state institutions in charge of healthcare can significantly alleviate evident problems in healthcare.","PeriodicalId":22484,"journal":{"name":"Tehnika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71132065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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