scholarly journals Rank distribution of wood removal from forest land

2021 ◽  
Vol 25 (4) ◽  
pp. 112-120
Author(s):  
A.P. Mokhirev ◽  
◽  
K.P. Rukomojnikov ◽  
P.M. Mazurkin ◽  
◽  
...  
Keyword(s):  
Quality Factor ◽  
Correlation Coefficient ◽  
Field Experiments ◽  
Forest Land ◽  
Rank Distribution ◽  
Software Environment ◽  
Multiple Observations ◽  
Microsoft Office ◽  
Timber Transport ◽  
Rank Distributions

The article is devoted to the problem of modeling the speed of movement of timber trucks in various natural conditions of the Krasnoyarsk Territory. The results were obtained on the basis of multiple observations of the speed of timber trucks on various sections of forest roads. The results presented in the article are based on the selection and analysis of factors that can presumably have any effect on the speed of movement of timber trucks when hauling timber. The article presents the results of creating a multifactorial dependence for calculating the speed of timber transport. The analysis of the quality factor of each of the factors is carried out by the rank distribution of the obtained regularities and by compiling a rating of the conducted field experiments on the multivariate analysis of timber removal. The calculations and modeling were carried out in the CurveExpert-1.40 software environment and the Microsoft Office Excel software package in the RANK environment. Using the CurveExpert-1.40 software environment, the adequacy of the regularities of the rank distributions of the factors of timber removal from the forest area was assessed by the correlation coefficient. As a result, we obtained models of the total and private influence of factors from themselves (monar ratio) by ranks, which were placed before modeling for each factor in the direction of changing the level of their preference for factors from worse to better. When analyzing the quality factor of experiments, all analyzed factors received a correlation coefficient above 0,97, which corresponds to the level of adequacy of the «strongest factor relationship». This made it possible to add up the ranks of all 35 factors and, by the sum of the ranks, reveal the rating in the system of factors. The paper presents the mathematical dependences of rank distributions and graphs constructed from them. As a result of modeling, regression dependences were obtained and the quality factor of the values of the factors used by the authors in the course of production experiments was proved.

scholarly journals A Novel Noise Reduction Method of UAV Magnetic Survey Data Based on CEEMDAN, Permutation Entropy, Correlation Coefficient and Wavelet Threshold Denoising

Entropy ◽  
2021 ◽  
Vol 23 (10) ◽  
pp. 1309
Author(s):  
Yaoxin Zheng ◽  
Shiyan Li ◽  
Kang Xing ◽  
Xiaojuan Zhang
Keyword(s):  
Noise Reduction ◽  
Correlation Coefficient ◽  
Field Experiments ◽  
Reduction Method ◽  
Magnetic Data ◽  
Permutation Entropy ◽  
Magnetic Survey ◽  
Intrinsic Mode Functions ◽  
Real Signal ◽  
The Real

Despite the increased attention that has been given to the unmanned aerial vehicle (UAV)-based magnetic survey systems in the past decade, the processing of UAV magnetic data is still a tough task. In this paper, we propose a novel noise reduction method of UAV magnetic data based on complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN), permutation entropy (PE), correlation coefficient and wavelet threshold denoising. The original signal is first decomposed into several intrinsic mode functions (IMFs) by CEEMDAN, and the PE of each IMF is calculated. Second, IMFs are divided into four categories according to the quartiles of PE, namely, noise IMFs, noise-dominant IMFs, signal-dominant IMFs, and signal IMFs. Then the noise IMFs are removed, and correlation coefficients are used to identify the real signal-dominant IMFs. Finally, the wavelet threshold denoising is applied to the real signal-dominant IMFs, the denoised signal can be obtained by combining the signal IMFs and the denoised IMFs. Both synthetic and field experiments are conducted to verify the effectiveness of the proposed method. The results show that the proposed method can eliminate the interference to a great extent, which lays a foundation for the further interpretation of UAV magnetic data.

scholarly journals Reliability of Urinary 6-sulfatoxymelatonin as a Biomarker in Breast Cancer

2006 ◽  
Vol 21 (4) ◽  
pp. 242-245 ◽  
Author(s):  
M. Barba ◽  
A. Cavalleri ◽  
H.J. Schünemann ◽  
V. Krogh ◽  
A. Evangelista ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cohort Study ◽  
Postmenopausal Women ◽  
Correlation Coefficient ◽  
Metabolite Concentration ◽  
Rank Distribution ◽  
Competitive Immunoassay ◽  
Intra Class Correlation ◽  
Intra Class Correlation Coefficient ◽  
Storage Temperatures

The objective of this study is to evaluate the effect of cryopreservation at different storage temperatures on urinary 6-sulfatoxymelatonin (aMT6s) concentration. Overnight urine from 28 postmenopausal women participating in the ORDET cohort study was filtered and separated into 6 mL aliquots. Urine samples were stored at –80°C and at –30°C for an average of 14 years. Urinary aMT6s concentration was assessed using a competitive immunoassay. Mean aMT6s values of samples stored at –30°C were systematically lower than those of samples stored at –80°C (10.7 ng/mL versus 15.8 ng/mL, p<0.001). Bland Altman plots showed disagreement between determinations at different storage temperatures at the highest levels of the metabolite concentration. The degree of agreement evaluated in terms of intra-class correlation coefficient was 0.68 (95% CI 0.41–0.84, p<0.0001). Pearson's correlation coefficient between aMT6s values of the two differently stored samples was 0.93 (p<0.001), while the Kendal tau coefficient for rank distribution was 0.73 (p<0.001). Our data suggest that storage temperatures might affect degradation of aMT6s during storage. However, individual characterization by melatonin levels does not seem to be affected by cryopreservation conditions.

Differential Response of Grain Sorghum Hybrids to Foliar-Applied Mesotrione

2009 ◽  
Vol 23 (1) ◽  
pp. 28-33 ◽  
Author(s):  
M. Joy M. Abit ◽  
Kassim Al-Khatib ◽  
David L. Regehr ◽  
Mitchell R. Tuinstra ◽  
Mark M. Claassen ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Dose Response ◽  
Field Experiments ◽  
Growing Season ◽  
Grain Sorghum ◽  
Differential Response ◽  
Visible Injury ◽  
Herbicide Resistant ◽  
Sorghum Production ◽  
Selection Of

The selection of herbicide-resistant weeds in grain sorghum production has prompted researchers to explore alternative herbicides to prevent, delay, and manage herbicide-resistant weed biotypes. Greenhouse and field experiments were conducted to evaluate the differential response of sorghum hybrids to POST application of mesotrione. In a greenhouse experiment, 85 sorghum hybrids were treated with 0, 52, 105, 210, and 315 g ai/ha mesotrione when plants were at the three- to four-leaf collar stage. Sorghum response ranged from susceptible to tolerant sorghum hybrids. ‘Pioneer 84G62’, ‘Pioneer 85G01’, and ‘Triumph TR 438’ were the three most susceptible, whereas ‘Dekalb DKS35-70’, ‘Frontier F222E’, and ‘Asgrow Seneca’ were the three most tolerant hybrids. One week after treatment (WAT), the mesotrione rate causing 50% visible injury ranged from 121 to 184 and 64 to 91 g/ha in the most tolerant and susceptible hybrids, respectively. Mesotrione dose–response studies were conducted under field conditions on four sorghum hybrids. One WAT, injury symptoms were greater (up to 23%) in Pioneer 85G01 than in Asgrow Seneca (< 14%). However, all plants appeared normal by the end of the growing season. In addition, sorghum yields were not reduced by mesotrione treatments as verified by correlation coefficient analysis.

scholarly journals Soil Properties Affected by Land Use Systems in Western Chitwan, Nepal

2014 ◽  
Vol 2 (3) ◽  
pp. 265-269 ◽  
Author(s):  
R.P. Chauhan ◽  
K.R. Pande ◽  
S. Thakur
Keyword(s):  
Land Use ◽  
Soil Properties ◽  
Management Practices ◽  
Field Experiments ◽  
Sustainable Land Use ◽  
Block Designs ◽  
Forest Land ◽  
Pasture Land ◽  
Land Use Systems ◽  
Vegetable Farm

Field experiments were conducted in acidic soils of Mangalpur and Fulbari VDCs in western Chitwan, Nepal to study the effects of different land use systems on soil properties. Seven land use systems (cereal based lowland, cereal based upland, vegetable farm land, fruit orchard land, pasture land, forest land and farmer’s field) were used and they were replicated four times in randomized complete block designs. Composite soil samples were collected from each study sites and were analyzed in laboratory for soil physicochemical properties. The data obtained were analyzed using MSTAT-C. Soil properties were significantly affected by land use systems in western Chitwan condition. Soil organic matter and total soil nitrogen were significantly higher from pasture land (4.69 % and 0.23 %) and the lowest were from farmer’s field (2.40 % and 0.08 %). However, available soil phosphorous content was significantly higher from cereal based upland (448.3 kg ha-1) and it was the lowest from forest land (13.0 kg ha-1). Soil bulk density and pH were not significantly affected by land use systems. Since land use systems and management practices significantly affect soil physical and chemical properties, an appropriate and sustainable land use management option is necessary for fertile and healthy soil. Conservation tillage with the addition of sufficient organic inputs can be suggested based on this study to maintain soil health for sustained production and optimum activity of soil organisms under the western Chitwan land use systems. DOI: http://dx.doi.org/10.3126/ijasbt.v2i3.10660  DOI: http://dx.doi.org/10.3126/ijasbt.v2i3.10660 Int J Appl Sci Biotechnol, Vol. 2(3): 265-269  

Effect of Postemergence Mesotrione Application Timing on Grain Sorghum

2010 ◽  
Vol 24 (2) ◽  
pp. 85-90
Author(s):  
M. Joy M. Abit ◽  
Kassim Al-Khatib ◽  
Randall S. Currie ◽  
Phillip W. Stahlman ◽  
Patrick W. Geier ◽  
...  
Keyword(s):  
Grain Yield ◽  
Correlation Coefficient ◽  
Growth Stage ◽  
Field Experiments ◽  
Grain Sorghum ◽  
Garden City ◽  
Application Timing

Field experiments were conducted at Belleville, Colby, Hays, Hesston, Garden City, and Manhattan, KS, to determine grain sorghum response to POST application of mesotrione at three application timings. Mesotrione was applied at 52, 105, 157, and 210 g ai/ha in combination with 280 g ai/ha atrazine to grain sorghum at heights of 5 to 8, 15 to 20, and 30 cm, which correspond to early POST (EPOST), mid-POST (MPOST), and late POST (LPOST), respectively. All mesotrione rates caused injury at all application timings. Overall, grain sorghum injury from mesotrione was greatest at 1 wk after treatment (WAT); plants partially recovered from injury by 4 WAT. Mesotrione applied EPOST injured grain sorghum more than when applied at MPOST and LPOST timings. The EPOST application injured grain sorghum 19 to 88%, whereas injury from MPOST and LPOST application was 1 to 66% and 0 to 69%, respectively, depending on rate. Mesotrione injury was least at Belleville and most at the Hesston and Garden City (irrigated) sites regardless of growth stage. Correlation coefficient analyses indicated that observed mesotrione injury symptoms were not well correlated with grain sorghum yield; thus, mesotrione injury to grain sorghum did not influence grain yield. However, initial grain sorghum injury was severe, and this will likely be a major concern to producers.

scholarly journals EXPERIMENTAL RESEARCH OF THE PROCESS OF APPLICATION OF MINERAL FERTILIZERS BY A NEW CENTRIFUGAL WORKING BODY

2020 ◽  
pp. 5-14
Author(s):  
Volodymyr Bulgakov ◽  
Oleh Adamchuk ◽  
Volodymyr Kuvachov ◽  
Ihor Babyn
Keyword(s):  
Technological Process ◽  
Experimental Research ◽  
Horizontal Plane ◽  
Vertical Axis ◽  
Fertilizer Application ◽  
State Standards ◽  
Mineral Fertilizers ◽  
Software Environment ◽  
Current State ◽  
Microsoft Office

The use of centrifugal disk fertilizer spreaders, the axes of which are set obliquely, in the technological process of mineral fertilizers provides an increase indicators characterizing the spreading of technological material in the direction of its scattering, at a greater distance than fertilizer spreaders with vertical axis of rotation. Thus, the hypothesis of the possibility of increasing the working width of the machine for applying mineral fertilizers by equipping such machines with centrifugal disk fertilizer spreaders, the axes of which are set at an angle, is confirmed. Experimental research was conducted using the developed methods and current state standards, regression analysis, statistical methods of processing research results, standard and specially designed experimental equipment. The calculations were performed using the software environment Microsoft Office Excel 2007. As a result of experimental researches it is established that the centrifugal disk fertilizer spreaders which axis is placed inclined, reliably provides performance of technological process at change of frequency of rotation of its disk from 600 to 1000 rpm and changing the angle of installation of the disk to the horizon from 0o to 30o. For all studied kinematic modes of operation of the new working body, the effective scattering range of mineral fertilizers and the distance from it to the tray with the maximum share of the mass of sown fertilizer increase most rapidly with increasing disk angle to the horizontal plane from 0o to 10o, and least when changing the angle within 20o - 30o. The best indicators of fertilizer application both in terms of working width of capture and in terms of uneven application of fertilizers are provided at the angle of inclination of the disk of the new working body to the horizontal plane within 25o-30o.

scholarly journals THE CHANGE OF OIL QUANTITY AND DYNAMICS OF SOIL PHYTOTOXICITY AT THE OIL POLLUTION

2018 ◽  
pp. 7-14
Author(s):  
O. I. Romaniuk ◽  
L. Z. Shevchyk ◽  
T. V. Zhak
Keyword(s):  
Field Experiments ◽  
Podzolic Soil ◽  
Oil Pollution ◽  
Statistical Processing ◽  
Black Soil ◽  
Liquid Composition ◽  
Volatile Components ◽  
Intense Evaporation ◽  
Plant Test ◽  
Microsoft Office

The authors of the article study the regularities of oil quantity change and dynamics of soil phytotoxicity at the oil pollution. The article describes the sequence of study of changes in the amount of pollutant (oil) in the soil. The study was carried out in modeling, laboratory and micro-field experiments. Two types of soils (black soil and turf podzolic soil) were used in the studies. The experiments were carried out in at least three biological and three analytical repetitions. Statistical processing of the results was carried out using Microsoft Office Excel software package. The investigation of evaporation of oil from the soil (when the initial concentration of oil in the soil was 10% and the initial moisture of the soil was 20%) shows that the intense evaporation of the liquid composition (oil+water) occurs within the first 12 days and the intensity of evaporation from black soil is higher than from turf podzolic soil. The phytotoxicity of oil contaminated turf podzolic and black soils, at different humidity, in the process of natural weathering of oil was determined using such plant test objects as L. usitatissimum, H. annuus, F. vulgare. The significant decrease of phytotoxicity, more than twofold compared with the initial one, lasts up to 45 days. After the 45th day further reduction of phytotoxicity is not observed. After the 45th day even the insignificant growth of phytotoxicity is observed. Obviously, this growth happens due to the formation of more toxic derivatives of oil in the process of natural oxidation. It is proved that under natural conditions within the first days there is an intense evaporation of volatile components of oil, which lasts for 45 days in average. At the same time, from 25% to 50% of oil is weathered from the soil depending on its type and the toxicity decreases by 2 approximately. Oil pollution spreads through the profile of the soil and in 6 months, at an initial contamination of 10%, it is observed at a depth of 30-40 cm. The least contaminated is the layer of soil at a depth of 10-20 cm. Therefore, the rehabilitation of soils by phytotherapeutic methods should be carried out 45 days after the pollution, and herbs should be planted at a depth of 10-20 cm.

scholarly journals Identification of Distribution Laws Using the Correlation Coefficient Using Python

2018 ◽  
pp. 36-38
Author(s):  
D. Losikhin ◽  
O. Oliynyk ◽  
O. Chorna ◽  
О. Gnatko
Keyword(s):  
Correlation Coefficient ◽  
Gaussian Distribution ◽  
Correlation Coefficients ◽  
Measurement Information ◽  
Distribution Law ◽  
Software Environment ◽  
Probability Densities ◽  
Sampling Intervals ◽  
Distribution Laws ◽  
Correct Application

The article is devoted to the development of a new method for identifying the distribution laws when evaluating the results of multiple measurements. The identification of the distribution laws is today an urgent metrological task, since the adopted restrictions on the number of measurements and assumptions about the distribution law of random error may introduce additional uncertainty in the assessment of the measurement result. The use of well-known classical approaches to the identification of distribution laws is associated with a number of difficulties associated with the need to use the completeness of the considered set of models and the correct application of the corresponding statistical methods. The main limitation associated with the use of classical approaches to the identification of distribution laws is that they are designed for use in data processing systems based on Gaussian distribution (normal) and, thus, are not universal. The imperfection of mathematical models of processing measurement information leads to the possible erroneous identification of the distribution law. The paper proposes a method for identifying the distribution laws for data outside the Gaussian distribution region. The model is based on the calculation of correlation coefficients for data with different distribution laws. The correlation coefficient is used to estimate the proximity of probability density functions and is calculated for pairs of different probability densities represented by histograms in a multidimensional vector space on an orthonormal basis of unit sampling intervals. Based on the obtained matrix of the values ​​of the correlation coefficients, a classification estimate of the unknown distribution laws is performed based on the experimental data of the simulated samples. A listing of the software implementation of the model in the Python software environment is given.

scholarly journals Creation of a Virtual Technology Laboratory and Organization of Training for Highly Qualified Personnel

2020 ◽  
Vol 29 (2) ◽  
pp. 159-168
Author(s):  
V. A. Nemtinov ◽  
I. M. Manaenkov ◽  
Yu. V. Nemtinova
Keyword(s):  
Organic Dyes ◽  
Three Dimensional ◽  
Virtual Space ◽  
Highly Qualified ◽  
Software Environment ◽  
Virtual Technology ◽  
Qualified Personnel ◽  
Virtual Modeling ◽  
Microsoft Office

The article describes the technology of virtual modeling which is used as a tool to improve the quality of engineering education. The authors propose an approach to the creation of a virtual technological laboratory prototype for studying the processes of organic dyes production in vAcademia software environment. The basic programming environment vAcademia was used to create the laboratory. To create the elements of the laboratory, the tools of various systems were used such as two- and three-dimensional design systems SketchUp, AutoCAD, COMPASS-3D; graphic and video editors: Adobe Photoshop, the GIMP, Photoscape, Windows Movie Maker, SONY Vegas Pro; visual simulation tool for dynamic systems SIMUL8; software for working with tables and text Microsoft Office. The virtual laboratory was created in order to simulate the real laboratory environment and the processes produced in it, as well as to simulate the learning environment in which students transform their theoretical knowledge into practical skills. The test researches on an assessment of the quality of education, with use of the developed communicative and educational environment in the form of virtual space of technological laboratory on studying of processes of production of organic dyes, showed its increase by 15,6%.

Nutrient Limiting Factors in Red-Yellow Soil from Different Parent Rocks at Oil-Tea Forest Land in the South-Central Region of China

2014 ◽  
Vol 694 ◽  
pp. 568-575
Author(s):  
Zhi Yi Cui ◽  
Xiao Mei Deng ◽  
Ru Chun Xi ◽  
Rui Ping Li ◽  
Jia Xin Hu
Keyword(s):  
Central Region ◽  
Field Experiments ◽  
Nutrient Status ◽  
Red Soil ◽  
Hunan Province ◽  
Limiting Factors ◽  
Forest Land ◽  
The South ◽  
South Central ◽  
Granite Soil

Nutrient limiting factors in main soils from oil tree forest land of the south-central region in Hunan Province were assessed by employing the systematic approach developed by Agro Services International and selecting Sorghum as indicate plant in order to evaluate their nutrient status and limiting factors. The results of soil testing showed that the four oil tree forest land soils were low in organic matter, N, P, K was severely deficient, but the available S and Fe were sufficient, the deficiency of Ca, Mg, B, Zn and Mo were rather common. In the tested oil tree Camellia forest land soils, the larger capacity of adsorption and fixation belonged to K, Zn, Mn in Quaternary red soil and to B in Sandstone soil, while the capacity of adsorption and fixation of K, B in Phyllite soil land and P, Mn, Zn in Granite soil was weak. The results of pot experiment showed that its nutrient deficient degree was in the order of N>P>K>B>Mo>Mn in Granite soil; that was in the order of K>P>N> Zn in Sandstone soil; that was in the order of P>N>K>Cu>Zn>Mn>Mo>S in Phyllite soil; that was in the order of N>P>K>Zn>Mo>Cu>B in Quaternary red soil. So P, N and K were the main nutrient limiting factors of oil tree forest land soils in Hunan province, and then followed by Zn, B and Mo. Next field experiments should be focused on the balanced fertilization of N, P, K, and B, Zn, Mo. Moreover, much attention should be paid to make up Ca and Mg.

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