scholarly journals Determination of the coefficient of adhesion of the wheels of vehicles with road markings

2019 ◽  
Vol 6 (3) ◽  
Author(s):  
Margarita Goncharova ◽  
Boris Bondarev ◽  
Talgat Akchurin
Keyword(s):  
Standard Deviation ◽  
Traffic Accidents ◽  
Test Method ◽  
Resistance Testing ◽  
Cohesive Properties ◽  
Road Surfaces ◽  
Method Of Measurement ◽  
Sliding Resistance

Possibilities of application of DIN EN 13036-4 Characteristics of road and airfield covering are considered. Test method. Part 4. Method of measurement of sliding resistance. Testing with a pendulum device to assess the coefficient of adhesion of road markings. This method is not applicable for diagnostics and more advanced scientific studies of rough and cohesive properties of road surfaces. The standard can be useful to control coupling properties of road markings, airfield pavements, examination of traffic accidents or for additional evaluate and evaluate the quality of road works, which, however, can be much better resolved based on domestic indicators standard deviation raznovysotnyh of Krasnoglinsky and raznolikosti geometry mikroheranhvatho road surface.

scholarly journals DEVELOPMENT OF AN APPROACH TO DETERMINATION OF COUPLING QUALITIES OF ROAD COVERING USING WEATHER-CLIMATE FACTOR

2020 ◽  
pp. 1-7
Author(s):  
Anastasia Shevtsova ◽  
Alexander Novikov
Keyword(s):  
Road Safety ◽  
Traffic Management ◽  
Traffic Accidents ◽  
Road Surface ◽  
Climate Factor ◽  
The Road ◽  
Weather And Climate ◽  
Object Of Study

Assessing the grip of the road surface is an extremely important task both in the field of traffic management, and in the field of investigation and examination of traffic accidents. The coupling quality of the road surface is fully ensured by the grip coefficient, which is subject to constant monitoring in order to ensure road safety. There are a large number of methods for determining the magnitude of the grip coefficient. In their study, the authors propose an improved approach for determining the investigated value using the weather and climate factor. Previously, a group of researchers in the course of scientific research determined the dependence of the grip coefficient on the temperature of the road surface, as a result of mathematical analysis, the authors obtained a dependence that allows to determine the studied value by air temperature and the condition of the road surface (presence of precipitation). The performed experiment allowed us to test the obtained dependence within the framework of the object of study and to make a comparative assessment of the results obtained with the data obtained using the road laboratory.

scholarly journals ASSESSMENT OF COLOR OF MEAT USING THE METHOD OF COMPUTER COLORIMETRY

2016 ◽  
Vol 3 ◽  
pp. 3-7 ◽  
Author(s):  
Oksana Petrusha ◽  
Alexandra Niemirich
Keyword(s):  
Standard Deviation ◽  
Mean Value ◽  
Raw Material ◽  
Color Parameter ◽  
Native State ◽  
Digital Technique ◽  
Color Coordinates ◽  
The Mean

In the article is considered a possibility to use the accessible modern digital technique: flatbet scanners, digital photocameras and web-cameras for determination of color of foodstuff. The offered method allows get the digital image of studied sample and count information about the values of color coordinates of its every pixel that characterizes the color of meat half-finished product such as meat powder. The assessment of this raw material was carried out in dry and restored state. At measurement of color coordinates of the meat powders in native state there was determined the method of sample preparation for getting the mean value of color with the least standard deviation ~ 20 %. Thus, according to the studies, the sample of dry meat half-finished product must be reduced to fragments less than 0,2 mm. Availability of this method allows use it for assessment of the quality of dry meat half-finished products according to color parameter.

scholarly journals METHOD OF COMPILING AND USING THE VEHICLES HISTORY AT THEIR TECHNICAL CONDITION STUDY IN THE TASKS IN DETERMINING THE FAILURE CAUSES OF THE UNITS AND ASSEMBLIES

2020 ◽  
pp. 594-605
Author(s):  
А. Khrulev
Keyword(s):  
Traffic Accidents ◽  
Road Traffic ◽  
Technical Condition ◽  
Road Traffic Accidents ◽  
Simple Method ◽  
Warranty Period ◽  
The Past ◽  
History Of

The article examines the expertise field of the technical condition study of the vehicles that are not related to road traffic accidents, but refer to the settlement of the disputes with the claims regarding the quality of a sold vehicle during its warranty period, as well as the quality of its maintenance and repair. It is noted that the occurrence of a failure existing at the time of the expert’s study may be associated with various events in the history of the vehicle. It is shown that the fault cause investigated by the expert can be actually located in one of the past events, and such events together make up the vehicle history, if they are arranged according to the chronology of the dates and / or run (running time) of the vehicle. A simple method for compiling and analyzing the vehicle history was proposed, which allows one to establish the fault causes of units and assemblies that are difficult or impossible to identify by other methods. By a typical example all the stages of compiling a vehicle history table was shown from the analysis of all the available documents and information up to analyzing the characteristic events and their symptoms in the history. This means the inclusion of all identified events in the history table, the allocation of characteristic events and their corresponding symptoms in the history, which can indicate the initial damage to the studied unit, the development of the damage or another characteristic event that is important for determination of the fault cause. According to the results of the study, it was concluded that the analysis of the vehicle history is one of the possible ways to determine the fault cause of the complex units and assemblies. The developed simple method for compiling and analyzing the vehicle history table makes it possible to establish the fault causes that are difficult or impossible to identify by other methods. Using the proposed method in practice has shown its effectiveness in solving the expert tasks related to the technical condition study of the vehicles when considering disputes in connection with the claims to the quality of the vehicles or their repair.

scholarly journals ANALISIS KANDUNGAN BORAKS PADA KERUPUK NASI YANG DIJUAL DI PASAR TRADISIONAL KABUPATEN TANGGAMUS SECARA SPEKTROFOTOMETRI UV-Vis

2019 ◽  
Author(s):  
Samsuar Samsuar ◽  
Akhmad Rokiban ◽  
Suparsi Suparsi
Keyword(s):  
Standard Deviation ◽  
Qualitative Method ◽  
Nutritional Value ◽  
Chemical Formula ◽  
Linear Calibration ◽  
Traditional Markets ◽  
Sample Testing ◽  
Flavor Enhancer

The use of additional subtance for food is to increase or to maintain nutritional value and quality of storability. Our govermment prohibits the use of borax as an additives subtance for food as appointed in Permenkes No.033, 2012. Borax is a chemical compound in white colorless crystalline with a chemical formula Na2B4O7.10H2O. Rice crackers are crackers made from rice with spices and flavor enhancer. In manufacturing crackers Borax is sometimes added to get savory crackers and to make them swelling. The purpose of this study is to find out the borax content on rice crackers in traditional markets Tanggamus district by using the qualitative method. It uses the flame test, cucurmin reagen test and ammonia steam test. It also applies quantitative test by using spectophotometry UV-Vis. There are 8 samples which were taken in tradisional markets Tanggamus district. The result of determination of the maximum length waves is 543 nm. This method has been validated before being used for the samples. The resulf of the research shows a curve with linear calibration,with the regression equalition y = 0,539x + 0,009 and correlation coefficient (r) = 0,9979. The average recorvery or accuracy value is 104,71 %. The precision or the result of standartd deviation and standard deviation relative or coeffecient of variation (CV) is 0,219%. The LOD acquistion value is 0,069 µg/ml and the LOQ is 0,320 µg/ml. The validation of the test shows that all methods have been done are valid, so it can be used to test the borax assay on the samples. Based on the analysis on 8 samples of rice crackers, quanlitative obtained sample testing shows 6 detected containing borax, then the result of quantitative obtained the level of borax ranged from 46,75 µg/g until 107 µg/g. Keywords : borax, rice crackers, Spectrofometry UV-Vis

Measurement of tricyclic antidepressants. Part II. Applications of methodology.

1980 ◽  
Vol 26 (7) ◽  
pp. 805-815 ◽  
Author(s):  
B A Scoggins ◽  
K P Maguire ◽  
T R Norman ◽  
G D Burrows
Keyword(s):  
Tricyclic Antidepressants ◽  
Biological Fluids ◽  
Plasma Concentrations ◽  
New Drugs ◽  
Rigorous Evaluation ◽  
Method Of Measurement ◽  
Precise Relationship ◽  
New Generation

Abstract This review, together with Part 1 (Clin. Chem. 26: 5-17, 1980), summarizes progress in measurement of tricyclic antidepressants in biological fluids and the application of the methodology to clinical practice. For many of the older drugs and for all of the new-generation antidepressants, further studies are required to delineate the precise relationship between plasma concentration and clinical response in well-defined diagnostic groups. For new drugs, rigorous evaluation of a method of measurement is required before it is applied to clinical studies. Assessment of drug interactions, inter-patient variability in plasma concentrations, and determination of the plasma concentrations required for therapeutic response all depend almost entirely on the quality of the assay methodology.

Measurement of tricyclic antidepressants. Part II. Applications of methodology.

1980 ◽  
Vol 26 (7) ◽  
pp. 805-815 ◽  
Author(s):  
B A Scoggins ◽  
K P Maguire ◽  
T R Norman ◽  
G D Burrows
Keyword(s):  
Tricyclic Antidepressants ◽  
Biological Fluids ◽  
Plasma Concentrations ◽  
New Drugs ◽  
Rigorous Evaluation ◽  
Method Of Measurement ◽  
Precise Relationship ◽  
New Generation

Abstract This review, together with Part 1 (Clin. Chem. 26: 5-17, 1980), summarizes progress in measurement of tricyclic antidepressants in biological fluids and the application of the methodology to clinical practice. For many of the older drugs and for all of the new-generation antidepressants, further studies are required to delineate the precise relationship between plasma concentration and clinical response in well-defined diagnostic groups. For new drugs, rigorous evaluation of a method of measurement is required before it is applied to clinical studies. Assessment of drug interactions, inter-patient variability in plasma concentrations, and determination of the plasma concentrations required for therapeutic response all depend almost entirely on the quality of the assay methodology.

Customer’s satisfaction on service quality at Vietnam Technological and Commercial Joint Stock Bank – An Giang Branch

2020 ◽  
Vol 4 (3) ◽  
pp. First
Author(s):  
Tran Minh Hieu ◽  
Nguyen Duong Ngoc Mai Chi
Keyword(s):  
Customer Satisfaction ◽  
Service Quality ◽  
Test Method ◽  
Quality Of Services ◽  
Factors Affecting ◽  
Factors Influencing ◽  
Alpha Reliability ◽  
Survey Results ◽  
Development Orientation

This study applied SERVQUAL scale of Parasuraman et al to measure factors affecting customer satisfaction on service quality at Vietnam Technological and Commercial Joint Stock Bank - An Giang Branch (Techcombank An Giang). The study was conducted to survey 207 customers who have been using the service at Techcombank An Giang. The survey results were analyzed by the Cronbach's Alpha reliability test method, then used Exploratory factor analysis (EFA) to verify and evaluate the scale of service quality. The results of the regression analysis show that customer's satisfaction about service quality at Techcombank An Giang includes four factors: The factor with the highest level is the Empathy with Beta = 0.253, the second of factor is the Responsibility with Beta = 0.248, ranked third in the influence level is the Tangible with Beta = 0.235, and the lowest impact level is the Reliability with Beta = 0.144. The research also uses statistical methods to describe and test the differences of demographic factors with customer's satisfactionon service quality.The analysis results show that there is no difference between customer's satisfaction on service quality and factors such as gender, age, income, number of transaction banks, regular transaction banks, and time to use the service at Techcombank An Giang. Through the research results, the author would like to propose some ideas to improve the quality of services, thereby attracting new customers and importantly, keeping traditional customers because the development orientation of Techcombank is to take care of old customers to cross sell other products of the bank. The Stud results offer a basis for the branch to identify the factors influencing customer satisfaction on their service quality, thereby having an appropriate strategy to improve customer satisfaction.

Tingkat Pemahaman Kompetensi Guru Pada Mahasiswa Pendidikan Geografi Sebagai Calon Guru Geografi

2020 ◽  
Vol 21 (1) ◽  
pp. 102-117
Author(s):  
Novia Zalmita ◽  
Muhajirah Muhajirah ◽  
Abdul Wahab Abdi
Keyword(s):  
Prospective Teachers ◽  
Prospective Teacher ◽  
Quantitative Description ◽  
Population Data ◽  
Geography Education ◽  
Teacher Competence ◽  
Education Department ◽  
Long Time

One that influences human resource indicators is education. The teacher is a profession as a job of academic specialization in a relatively long time in college. Understanding related to teacher competence is very important to have by a prospective teacher because it can affect the quality of performance as a professional teacher. The teacher's competence is known as pedagogic, professional, social and personality competencies. The issue in this study is how the competency of the teacher of the Department of Geography Education FKIP Unsyiah as a prospective teacher of geography? The purpose of this study was to determine the competence of teachers in the Department of Geography Education FKIP Unsyiah as prospective geography teachers. Quantitative description approach is used in this study to find answers to the issue. The population in this study were students of the Department of Geography Education FKIP Unsyiah class of 2015 and 2016 who had been declared to have passed the Micro Teaching and Magang Kependidikan 3 course totaling 50 people. Because the population is small and can be reached, the determination of the sample using total sampling techniques so that the sample in this study is the whole population. Data collection is done by distributing test questions to respondents. The data was analyzed using the descriptive statistics percentage formula. The results of the study indicate that the level of teacher competence of Geography Education Department students as prospective teachers is in the moderate category, namely as many as 22 respondents (44%). A total of 12 respondents (24%) were in the high category, 15 respondents (30%) were in the low category and 1 respondent (2%) were in the very low category.

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