scholarly journals Elements of the model positioning of aircraft on the apron

2019 ◽  
Vol 51 (3) ◽  
pp. 101-108 ◽  
Author(s):  
Paweł Gołda ◽  
Mirosław Kowalski ◽  
Cezary Wasser ◽  
Paweł Dygnatowski ◽  
Aleksander Szporka
Keyword(s):  
Traffic Management ◽  
Holistic Approach ◽  
Parallel Structure ◽  
Single Element ◽  
Test Results ◽  
Simulation Tools ◽  
Airport Capacity ◽  
Ground Handling

The design of airports and the organization of their work requires the recognition of the basic components of the air transport process, consisting of an "aerial" part, including the landing phase and the landing operation itself, as well as take-off, the "ground" part, including the task of taxiing aircraft on apron, ground handling tasks, "terminal" part, including passenger handling tasks. These elements form a cause-and-effect sequence, or a series-parallel structure that determines the quality of services provided by the airport, their efficiency, reliability and price. The article presents the issues of decision support for the operation and maintenance of airport infrastructure and traffic management on the ramp and within the airport, i.e. the operation of allocating aircraft to the gates of "gates" using simulation tools. Aircraft taxiing operations on the tarmac integrate the flight phase (along with its components and its problems, such as arriving and departing sequencing) with the ground handling phase of aircraft and passengers at terminals. The model presented in the article is a single element of a holistic approach to the operation of an airport. The overall model consists of the development of decision models for the organization of aircraft traffic on the apron, algorithms for their solution and the possibility of practical application as a simulation tool for analyzing and assessing aircraft traffic processes in the take-off, taxiing and landing phase. To describe the model, a formal mapping of the structure of the necessary airport elements was proposed. A formal record of boundary conditions and criteria relevant to aircraft allocation processes is presented due to the minimization of travel time of passengers transferring between two aircraft assigned to two different gates. Test results can be used in practice, among others by airspace controllers and airport designers for: analyzing and assessing the possibilities of increasing airport capacity, analyzing and assessing the determination of taxiway lengths, maintaining high safety reserves, etc.

scholarly journals Pemanfaatan Kunyit (Curcuma domestica Val) Untuk Memurnikan Minyak Jelantah

2018 ◽  
Vol 7 (1) ◽  
pp. 41
Author(s):  
Muhammad Silmi Hi Abubakar ◽  
Siti Nuryanti ◽  
Suherman Suherman
Keyword(s):  
Fatty Acids ◽  
Moisture Content ◽  
Free Fatty Acids ◽  
Quality Parameters ◽  
Test Results ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Before And After

Study on the purification and quality test of used cooking oil with turmeric has been done. This study aims to determine the quality of cooking oil after purified turmeric. The quality parameters of oil studied were the moisture content, free fatty acids (FFA), and peroxide. The methods used for determination of these parameters were gravimetry for moisture content, acid-base titration for free fatty acids, and iodometric for peroxide. The test results for water from 0.6% to 0.4% free fatty acid from 1.2% to 0.2%, and peroxide levels before and after purification were successively from and 6 meq/g to 4 meq/g, respectively. Only free fatty acids of all three parameters met the requirement of SNI.

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 PENGARUH KUALITAS PELAYANAN DAN HARGA TERHADAP LOYALITAS PELANGGAN DENGAN KEPUASAN PELANGGAN SEBAGAI VARIABEL INTERVENING PADA TOKO A&A COPIER PEMATANGSIANTAR

2019 ◽  
Vol 6 (2) ◽  
pp. 70-86
Author(s):  
Joster Togatorop ◽  
Darwin Lie ◽  
Marisi Butarbutar ◽  
Andy Wijaya
Keyword(s):  
Quality Of Service ◽  
Customer Satisfaction ◽  
Customer Loyalty ◽  
Hypothesis Test ◽  
Test Results ◽  
Positive Correlation ◽  
Customer Complaints ◽  
The Gift

The results can be summarized as follows: 1. Quality of service, price, customer satisfaction and customer loyalty is good. 2. There is influence of service quality and price to customer satisfaction in prove ŶZ  = 5,885 + 0,523X1 + 0,661X2. The effect of customer satisfaction on customer loyalty is proved Ŷ = 6,197 + 0,663Z. 3. Quality of service and price have high and positive correlation with customer satisfaction in prove with value r = 0,858, and determination value equal to 26,4%. Customer satisfaction has high moderately and positive correlation with customer loyalty in the prove with the value of r = 0.763, and the value of determination of 41,7%. 4. Hypothesis test results stated H0 rejected means the quality of service and price have a positive and significant effect on customer loyalty with customer satisfaction as intervening variable.             The suggestions of this research are: 1. To improve the quality of service, A&A Copier Pematangsiantar shop employees should be able to handle customer complaints optimally, friendly to customers and able to communicate and serve customers well. 2. To optimize prices, to provide discounts to customers who have been copying more than one ream of paper and providing credit cards as a means of payment transactions. 3. For customer satisfaction, improve the results of photocopy so as not to blurred and bilge a more tidy. 4. To improve customer loyalty, pay attention to customer needs, help operate the computer, provide information about the products to be purchased by customers, and give the gift evenly.

Evaluation and Optimum Design of Parallel Manipulators Having Defined Workspace

2000 ◽  
Author(s):  
Jürgen Schönherr
Keyword(s):  
Optimum Design ◽  
Degrees Of Freedom ◽  
Parallel Manipulators ◽  
Parallel Structure ◽  
Transmission Quality ◽  
6 Degrees Of Freedom ◽  
Kinematic Optimization ◽  
Method Of Design

Abstract The condition of the Jacobian characterizes the transmission quality of manipulators and is used in this paper for the determination of the dimensions of manipulators having best mobility for a defined workspace. Typical planar and spatial manipulators of parallel structure and having 3 or 6 degrees of freedom are used to demonstrate the method of design used. Manipulators having identical degrees of freedom and workspaces and different structures, including those having fixed or variable leg lengths, are compared with respect to their mobility. The computing program developed for the purpose of optimum design performs the kinematic optimization of machines and manipulators of any structure.

Improving quality of care and reducing costs with angiogenesis-specific imaging tests in metastatic breast cancer.

2012 ◽  
Vol 30 (34_suppl) ◽  
pp. 150-150
Author(s):  
Carolyn Bodnar ◽  
L. Clark Paramore ◽  
Kevin B. Knopf
Keyword(s):  
Breast Cancer ◽  
Quality Of Care ◽  
Metastatic Breast Cancer ◽  
Accurate Determination ◽  
Metastatic Breast ◽  
Base Case ◽  
Test Results ◽  
The Impact

150 Background: Anti-angiogenesis (AA) drugs (e.g., bevacizumab) are expensive and their clinical benefit in metastatic breast cancer (MBC) has been challenged. Healthcare reform and financial pressures prioritize programs which improve patient quality of care and reduce costs of unnecessary care. Angiogenesis-specific imaging tests (A-IT) under development have potential to offer earlier, accurate determination of response. For A-IT-identified responders, AA treatment would be continued. For patients identified as non-responders, futile AA treatment and associated toxicities can be avoided and alternative therapies initiated. Methods: A decision-tree model was developed to estimate the impact of A-IT from determination of AA therapy eligibility through to disease progression. Key decision nodes were presence/absence of A-IT (assessing change in biomarker expression across 2 PET/CT scans: at AA eligibility, then after one cycle of AA), A-IT sensitivity/specificity (SE/SP) and clinician adherence to test results (tied to belief that results are valid enough to stop AA therapy). Key model inputs (and base case values): 1) median time to progression (TTP) for current MBC patients on AA therapies (9.5 months); 2) median TTP for A-IT identified responders (13 months); 3) costs of bevacizumab, one cycle ($5,200); 4) percentage of AA patients with hemorrhage (4%); 5) costs of hemorrhaging, per event ($14,694); 6) per patient costs for A-IT ($6,000); 7) estimated SE/SP of A-IT – 95%/75%; and 8) clinician adherence to test results (75%). Results: Based on a cohort of 100 MBC patients, use of A-IT results in 29 patients avoiding futile AA therapy with a saving of $460,000, versus a scenario where A-IT was not used. One-way threshold sensitivity analysis shows A-IT is cost-saving if SP >62% or when clinician adherence is ≥63%; results are not sensitive to AA hemorrhage rate. Conclusions: Use of A-IT could improve quality of care by optimizing AA therapy, i.e., by identifying responders who will experience survival benefit and non-responders who can avoid futile therapy and toxicity risks. Significant cost savings may be possible as a result of early determination of response to AA drugs.

Test and Research to the Dank Ratio of Woven Filtering Fabric

2011 ◽  
Vol 332-334 ◽  
pp. 916-919
Author(s):  
Gui Fen Yao ◽  
Jian Hua Yin ◽  
Hai Wen Liu
Keyword(s):  
Water Permeability ◽  
Performance Indicator ◽  
Woven Fabrics ◽  
National Standards ◽  
Test Results ◽  
Quality Of Water ◽  
Relationship Of ◽  
The Relationship

No matter for clothes fabric or industry fabric, the water permeability is an important performance indicator. In order to explore relationship of the water permeability of woven filtering fabrics with the fabric structure parameters, we design sixteen fabric. According to the national standards of determination of water permeability of woven filtering fabric, we test the dank ratio of the design fabric. In this paper we analysis the water permeability and structure parameter of woven filtering fabric with test the quality of water on some time through woven fabrics. We calculated the dank ratio from the water permeable quality and other parameters. The results indicate that, the effect of fabric texture on the dank ratio of woven fabrics is that the dank ratio of the plain weave is the smallest and the satin weave is the biggest. In addition, the relationship between overall covering factor and water permeability showed that the water permeability decreases along with the overall covering factor increasing. A linear regression equation between dank ratio and overall covering factor is get from the test results. In order to get big dank ratio, we should produce fabric with satin weave and lower overall covering factor.

scholarly journals STUDI KUALITAS PELAYANAN PADA SOSIAL MEDIA INSTAGRAM NINJA XPRESS TERHADAP PENINGKATAN CITRA PERUSAHAAN

2020 ◽  
Vol 3 (1) ◽  
pp. 96-108
Author(s):  
Aditya Krisna Putri, Yani Hendrayani, Uljanatunnisa
Keyword(s):  
Social Media ◽  
Quality Of Service ◽  
Sampling Technique ◽  
Corporate Image ◽  
T Test ◽  
Coefficient Of Determination ◽  
Survey Method ◽  
Test Results

This study discusses quality of service study in social media instagram of Ninja Xpress against improving the corporate image. The purpose of this research is to know the magnitude of the influence quality of service against improving corporate image on delivery service of Ninja Xpress. The model used in this study is a model of the formation of images. The method used is quantitative. This research using survey method by using a questionnaire. The population in this research is a followes of Ninja Xpress’s Instagram, for the sample Yamane formula using which then obtained as many as 99 of respondents. Sample withdrawal techniques used in this research is purposive sampling technique. The research results showed that test results correlation variable X (quality of service) against the variable Y (the corporate image) of 0,821. Based on the results of the calculation of the coefficient of determination of the obtained results the presence of the influence of variables X against Y variables of 67,4% it means the results of the influences is significant between variables X against Y variables. T test results in apat t calculate > t table i.e. t calculate 14,184 > 1,661 table t, then it can be inferred H0 is rejected and the Ha are received. The conclusion from research that Instagram of Ninja Xpress account must always be active in interacting with their customers and making the latest innovations in Instagram content uploads.

scholarly journals AUTOMATED DETECTION OF WEEDS AND EVALUATION OF CROP SPROUTS QUALITY BASED ON RGB IMAGES

2019 ◽  
Vol 48 (5) ◽  
pp. 52-60
Author(s):  
V. V. Alt ◽  
I. A. Pestunov ◽  
P. V. Melnikov ◽  
O. V. Elkin
Keyword(s):  
High Efficiency ◽  
Test Results ◽  
Vegetation Density ◽  
Vegetation Map ◽  
Leaf Chlorophyll ◽  
Map Generation ◽  
Automated Data Processing ◽  
Rgb Images

In this paper, we propose a method of automated data processing allowing to detect weeds and assess crop sprouts quality and quantity based on RGB images obtained by unmanned aerial vehicles (UAVs). The process consists of four main stages: 1) vegetation map generation with the use of modified Triangular Greenness Index (TGI); the index is defined as the area of a triangle formed by 3 points on a spectral curve with wavelengths of 480, 550 and 670 nm and estimates leaf chlorophyll content based on RGB images; 2) determination of the position of crop rows and spaces between rows based on the vegetation map; 3) detection of weeds and generation of an appropriate weed map; 4) division of crop rows into non-intersecting fragments and calculating vegetation density in each (the ratio of vegetation area to the total fragment area). By changing the empirically defined parameters of map thresholds of fragment density, one can obtain a map that describes quality of crop sprouts. Unlike existing methods, the proposed scheme does not require presence of infrared data and can be applied to usual RGB images with the use of wide-spread types of UAVs. The method was tested on RGB images of flax and sunflower sprouts collected with SONY ILCE6000 camera in June, 2017 in Altai Territory. The images were taken at the height of 150 m, spatial resolution was 1.5 cm/pixel. The size of each image was 6000x4000 pixels. Test results confirmed high efficiency of the proposed method.

scholarly journals Imagens digitalizadas na avaliação do teste de tetrazólio em sementes de trigo

2020 ◽  
Vol 16 (6) ◽  
pp. 67-78
Author(s):  
Emanueli Bastos Garcia ◽  
Marizangela Rizzatti Ávila ◽  
Nelson da Silva Fonseca Júnior ◽  
Getulio Takashi Nagashima
Keyword(s):  
Correlation Coefficients ◽  
Test Results ◽  
Simple Correlation ◽  
Precise Analysis ◽  
Physiological Quality ◽  
Digitized Images ◽  
Tetrazolium Test ◽  
Wheat Seeds

The tetrazolium test can be an alternative to obtain fast results of the physiological potential of wheat seeds. In this context, the objective of the present study was to evaluate the efficiency of the tetrazolium test through the evaluation by analysis of digitized images in the determination of the physiological quality of wheat seeds.The experiment was carried out with 22 lots of wheat seeds, submitted to the determination of the physiological potential, including the tetrazolium test evaluated by means of digitized image analysis.For digitization, after longitudinal bisection, and staining in 0.075% tetrazolium solution, the seeds were grouped on tabletop scanner glass, stored and classified into four vigor classes. Data were submitted to analysis of variance, with means grouped by the Scott-Knott test, at 5% of significance; we also performed an analysis of the simple correlation coefficients between tetrazolium test results and other tests.The evaluation of the tetrazolium test through the analysis of digitized images grouped the lots in three levels of vigor.The method is effective in determining the vigor and viability of wheat seeds, because the possibility of expanding the images that allows precise analysis of the embryonic axis structures.

scholarly journals Guidelines for the use of discography for the diagnosis of painful degenerative lumbar disc disease

2002 ◽  
Vol 13 (2) ◽  
pp. 1-9 ◽  
Author(s):  
Daniel K. Resnick ◽  
David G. Malone ◽  
Timothy C. Ryken
Keyword(s):  
English Language ◽  
Lumbar Disc ◽  
Test Results ◽  
Disc Disease ◽  
Lumbar Disc Disease ◽  
Treatment Standard ◽  
Practice Parameters ◽  
Positive Results

Object Discography has been used as a diagnostic test in the evaluation of patients with recalcitrant low-back pain. Recently, its usefulness has been questioned because of the occurrence of false-positive results as well as the influence of psychological factors on test results. The purpose of this review is to establish the literature support for and against the use of discography. A search of the English-language literature published between 1966 and 2001 was performed. Papers were selected based on inclusion criteria described in the text, and the quality of information was graded using previously described methods. Conclusions The authors propose a set of practice parameters based on the literature. Although the data were not judged adequate for the determination of a treatment standard, parameters for the use of discography are provided at a guideline and option level.

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