Proceedings of the Bulgarian Academy of Sciences最新文献_第9页

Self-driving Car Control Model Extension with Voice Commands Control 通过语音指令控制的自动驾驶汽车控制模型扩展

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.12

Snezhana Pleshkova

{"title":"Self-driving Car Control Model Extension with Voice Commands Control","authors":"Snezhana Pleshkova","doi":"10.7546/crabs.2023.11.12","DOIUrl":"https://doi.org/10.7546/crabs.2023.11.12","url":null,"abstract":"The developed experimental models of self-driving car demonstrate high accuracy (about 99%), but there is still a need to improve the overall safety of real traffic on the roads. Especially when there are people in the car, if the autonomous vehicle loses control on the road, the quick intervention to prevent a possible crash or a more serious road accident can be only through voice commands between the person and the execution control devices of self-driving car. The existing self-driving car control models are mainly based on incoming from mounted on the autonomous vehicle video cameras information, processed from deep learning neural networks and artificial intelligence. This paper proposes to extend these models with voice commands recognition, spoken by a person in the car, in order to correct the self-driving car movement, to prevent possible traffic accidents, and therefore to increase traffic safety. For this purpose deep learning neural network with artificial intelligence is developed to recognize the spoken by the person voice commands, which can be interpreted by the executive control devices of the autonomous vehicle. The presented results from simulation tests show the ability of the proposed extended self-driving car control model to correct with voice commands the self-driving car motion on the road leading to essential increase of the safety of traffic.","PeriodicalId":104760,"journal":{"name":"Proceedings of the Bulgarian Academy of Sciences","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139231295","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

The Impact of Glyphosate Isopropylamine Salt and Glufosinate-ammonium on Some Soil Pathogens Causing Disease in Wheat 草甘膦异丙胺盐和草铵膦对一些导致小麦病害的土壤病原体的影响

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.17

A. Serim, S. Kaymak

{"title":"The Impact of Glyphosate Isopropylamine Salt and Glufosinate-ammonium on Some Soil Pathogens Causing Disease in Wheat","authors":"A. Serim, S. Kaymak","doi":"10.7546/crabs.2023.11.17","DOIUrl":"https://doi.org/10.7546/crabs.2023.11.17","url":null,"abstract":"Glyphosate isopropylamine salt and glufosinate-ammonium are commonly used herbicides for presowing or host-harvest weed control in Turkish wheat fields. Although many studies have been conducted on their efficacy against weeds, limited studies are available in the literature on their impact on soil pathogens causing disease in wheat, such as Fusarium culmorum, Gaeumannomyces graminis var. tritici, and Bipolaris sorokiniana. In this in vitro study, the efficacy of glyphosate isopropylamine salt and glufosinate-ammonium on the mycelial growth of these pathogens grown in PDA was investigated. Changes in the mycelial growth of fungal species grown in herbicide-amended PDA medium and control medium were observed by measuring the radial growth of the colonies three times per week. Glufosinate ammonium effectively suppressed the fungal growth of all of the pathogens tested in vitro. Glyphosate isopropylamine salt induced mycelial growth of B. sorokiniana; however, there was little or no impact of the herbicide on other pathogens tested. Wheat growers should be careful using glyphosate isopropylamine salt in fields that are infected by B. sorokiniana, or they should use glufosinate-ammonium in fields where these pathogens are common.","PeriodicalId":104760,"journal":{"name":"Proceedings of the Bulgarian Academy of Sciences","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139233222","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

Multi-step Methods for Machine Learning Models with Web Metrics 利用网络指标的机器学习模型多步骤方法

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.08

Ivan P. Popchev, D. Orozova

引用次数: 0

Relationships between Heavy Metal and Metalloid Contents and Major Soil Characteristics in Soils around the Former Kremikovtsi Metallurgical Plant Following Its Closure in 2009 前克雷米科夫齐冶金厂 2009 年关闭后周围土壤中重金属和类金属含量与主要土壤特性之间的关系

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.18

L. Nenova, I. Atanassova, Mariela Stoykova, Emil Dimitrov, Ivailo Kirilov, Maya Benkova, T. Simeonova, M. Harizanova

{"title":"Relationships between Heavy Metal and Metalloid Contents and Major Soil Characteristics in Soils around the Former Kremikovtsi Metallurgical Plant Following Its Closure in 2009","authors":"L. Nenova, I. Atanassova, Mariela Stoykova, Emil Dimitrov, Ivailo Kirilov, Maya Benkova, T. Simeonova, M. Harizanova","doi":"10.7546/crabs.2023.11.18","DOIUrl":"https://doi.org/10.7546/crabs.2023.11.18","url":null,"abstract":"Soils around the former metallurgical plant Kremikovtsi were subject of continued interest due to the environmental problems resulting from the plant's activities and especially heavy metal pollution. The aim of the present study was to investigate the contamination of the studied soils by metals and metalloids, several years after the closure of the plant (2009) and to relate their concentrations to basic soil parameters, pH, electrical conductivity, cation exchange capacity, clay content and total organic carbon, which will contribute to better assessment of their behaviour and remediation strategies. Total concentrations (aqua-regia) of the elements Al, B, Ba, Cd, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Pb, Zn and As were determined. Elevated levels of the heavy metals Pb, Cd, Zn, and the metalloid arsenic (As) were found at the studied sites. Lead (Pb) exceeded maximum permissible concentrations (MPC), regulated by Bulgarian legislation for arable lands between 2 and 15 times, cadmium (Cd) between 3 and 5 times, arsenic (As) between 3 and 6 times, and zinc (Zn) was higher than MPC in three of the sampled sites. Soil pH values were in significant correlation with EC (R** = 0.805), CEC R** = 0.781), B (R* = 0.638), Cu (R* = 0.669), Fe (R** = 0.766) and Mn (R*** = 0.916) contents. Aluminium, cadmium, lithium and lead concentrations were related to the content of the clay fraction in soil. Positive correlation was obtained in multiple regression models between Pb, Al, Cd, TOC and soil pH, and negative relationship was observed with electrical conductivity (EC). The obtained results showed complex relationships between soil characteristics and the metals and metalloids, which emphasize the need for their simultaneous assessment, remediation and careful use for agricultural purposes.","PeriodicalId":104760,"journal":{"name":"Proceedings of the Bulgarian Academy of Sciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139232192","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

Evaluation of Metal Ageing of Reactor Pressure Vessels in a Nuclear Power Plant under the Influence of Ageing Mechanisms and Environmental Conditions 在老化机制和环境条件影响下对核电站反应堆压力容器金属老化的评估

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.13

Galya Dimova

{"title":"Evaluation of Metal Ageing of Reactor Pressure Vessels in a Nuclear Power Plant under the Influence of Ageing Mechanisms and Environmental Conditions","authors":"Galya Dimova","doi":"10.7546/crabs.2023.11.13","DOIUrl":"https://doi.org/10.7546/crabs.2023.11.13","url":null,"abstract":"The reactor metal in NPP is subjected to ageing mechanisms – corrosion, erosion, fatigue and neutron fluence embrittlement. These mechanisms cause degradation of the mechanical properties and may lead to the occurrence of defects. Environmental conditions are high pressure and fluid temperature values along the primary circuit. Where defects occur, it is possible to observe fracture of the metal under the environmental conditions. The RPV metal was studied by non-destructive testing methods. The article contains the results of the methods applied. In the defects site the values of fluence, circular stresses and temperatures were defined for a reactor operating under accident conditions. The impact of these factors in creating zones in the metal with risk of destruction has been considered. The results show, that corrosion and erosion have not caused defects in the metal. Neutron fluence and its thermal impact on the metal have caused embrittlement which is manifested by indications of defects. Two main factors were observed that lead to the creation of sites with a potential risk of fracture: 1) the neutron and thermal embrittlement of the metal, and 2) the hydraulic stresses from the fluid. The stress intensity factors of some defects, as well as the critical values of these factors have been calculated. The comparison of these values demonstrates that the metal in the danger zones will not be damaged.","PeriodicalId":104760,"journal":{"name":"Proceedings of the Bulgarian Academy of Sciences","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139228649","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

Behaviour in Chronic Wounds of Vascular Origin 血管性慢性伤口的行为

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.15

E. Hadzhiev, Valentin Govedarski, Todor Zahariev, Gencho Nachev

{"title":"Behaviour in Chronic Wounds of Vascular Origin","authors":"E. Hadzhiev, Valentin Govedarski, Todor Zahariev, Gencho Nachev","doi":"10.7546/crabs.2023.11.15","DOIUrl":"https://doi.org/10.7546/crabs.2023.11.15","url":null,"abstract":"With an ageing population the number of people with chronic limb wounds of vascular origin is growing steadily. These wounds are managed conservatively, surgically and with hybrid approach. They have been treated by different specialists. The aim of the present study was to compare the results between the different methods of treatment – conservative, surgically and with hybrid approach, as well as to offer an approach to these wounds from vascular origin based on our experience in the clinic. For a period of 3 years 220 patients with venous wounds have been accepted in the department of vascular surgery in UHAT “St. Ekaterina”, Sofia. One hundred of them have been treated conservatively, the rest 120 – with complex approach – surgically, pharmaceutically, elastopia or with bandages. The rate of ageing ulcuses of venous origin did not differ significantly in 3 months in the two groups (55% to 66%), on account of recurrences at 12-month follow-up, which were significantly more common in the conservative therapy group (15% to 30%). We have followed-up the frequency of the healed wounds on the 1st, 3rd and 6th month. A significant difference in healing wounds of vascular origin with a complex approach (with open surgery and conservatively) even during the 1st month has been noticed. The complex approach applied as a treatment of chronic wounds with vascular origin is particularly important. The surgical or interventional correction of pathological changes of the vascular system are of great importance for the successful treatment of these ulcuses.","PeriodicalId":104760,"journal":{"name":"Proceedings of the Bulgarian Academy of Sciences","volume":"277 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139229051","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

Numerical Simulation of Liulin-MO Instrument for Measuring Cosmic Radiation Onboard ExoMars Trace Gas Orbiter 用于测量 ExoMars Trace Gas Orbiter 上宇宙辐射的柳林-MO 仪器的数值模拟

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.07

K. Krastev, J. Semkova, Rositza Koleva

{"title":"Numerical Simulation of Liulin-MO Instrument for Measuring Cosmic Radiation Onboard ExoMars Trace Gas Orbiter","authors":"K. Krastev, J. Semkova, Rositza Koleva","doi":"10.7546/crabs.2023.11.07","DOIUrl":"https://doi.org/10.7546/crabs.2023.11.07","url":null,"abstract":"We present the results from numerical simulation of Liulin-MO instrument for measurement of the space radiation on board Trace Gas Orbiter (TGO) satellite of ExoMars-2016 mission during its transit to Mars in April-September 2016 [Semkova J., T. Dachev, St. Maltchev, B. Tomov, Yu. Matviichuk} et al. (2015) Radiation environment investigations during ExoMars mission to Mars – objectives, experiments and instrumentation, C. R. Acad. Bulg. Sci., 68 (4), 485–496] [Semkova J., R. Koleva, V. Benghin, T. Dachev, Yu. Matviichuk et al. (2018) Charged particles radiation measurements with Liulin-MO dosimeter of FREND instrument aboard ExoMars Trace Gas Orbiter during the transit and in high elliptic Mars orbit, Icarus, 303, 53–66], using the Geant4 package. The methodology for calculating galactic cosmic rays (GCR) linear energy transfer (LET) is described. A methodology for screening false signals in the deposited energy spectra in the Liulin-MO detectors and correspondingly LET spectra is proposed. The contribution of the individual components of the spectrum of GCR in the LET spectrum is estimated. The calculated average radiation quality factor of GCR using the cleaned from false signals LET spectrum is compared with the experimental results obtained during the transit to Mars and a reasonable agreement is observed.","PeriodicalId":104760,"journal":{"name":"Proceedings of the Bulgarian Academy of Sciences","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139230400","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

An Algorithm for Exploratory Analysis and Normalization of Big Data with Pandas 使用 Pandas 对大数据进行探索性分析和规范化的算法

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.09

Mariya Zhekova

引用次数: 0

On a Complex Polynomial and Its Derivative 关于复多项式及其衍生物

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-11-27 DOI: 10.7546/crabs.2023.11.01

Prasanna Kumar

引用次数: 0

Conformal Yamabe Solitons on Tangent Bundles with Complete Lifts of Some Special Connections 具有某些特殊连接的完全提升的切束上的共形Yamabe孤子

Proceedings of the Bulgarian Academy of Sciences Pub Date : 2023-08-29 DOI: 10.7546/crabs.2023.08.03

M. Altunbaş

引用次数: 0