يعرض 1 - 10 نتائج من 13,690 نتيجة بحث عن '"agricultural products"', وقت الاستعلام: 1.87s تنقيح النتائج
  1. 1
    دورية أكاديمية
  2. 2
    دورية أكاديمية

    المصدر: RUDN Journal of Ecology and Life Safety, Vol 32, Iss 2, Pp 172-183 (2024)

    الوصف: The study presents the results of a study of the documents of the Territorial Body of the Federal State Statistics Service for the Oryol region (1988-1991) stored in the fund of the State archives of the Oryol region, related to agro-industrial production in agricultural areas contaminated with 137Cs as a result of the accident at the Chernobyl accident. Rehabilitation of agricultural lands in radioactively contaminated areas of the Oryol region remains relevant to the present day. Search, selection and scanning of the most important documents on the subject of “Protective and Rehabilitation Measures Related to the Elimination of the Consequences of the Chernobyl accident” in the agro-industrial complex of the Oryol region in 1988-1991 were carried out. On the basis of the prepared electronic copies of the selected documents, a database was formed containing information on the size of sown (harvested) areas and the actual harvest in the agricultural areas of the Oryol region contaminated with 137Cs as a result of the accident at the Chernobyl accident in 1988-1991.

    وصف الملف: electronic resource

  3. 3
    دورية أكاديمية

    المؤلفون: Wei Wei, Xue Zhou, Zhen Huang, Zhiwei Su

    المصدر: IET Image Processing, Vol 18, Iss 8, Pp 2179-2190 (2024)

    الوصف: Abstract Various types of foreign fibres may be mixed in the planting, transportation, and production processes of cotton, which not only cause equipment to be out of control, but also leads to a decrease in the quality of cotton textile products and economic losses. The machine vision based detection method for cotton foreign fibres is widely used. Based on existing related research, we construct a classification dataset for cotton foreign fibres in practical scenarios, named the CF2113‐10 dataset. The authors design a basic foreign fibre classification network called CottonNet that balances performance and efficiency. The classification accuracy on the validation set reached 94.2%. In order to enhance the high‐level feature extraction ability, this paper improves the feature fusion method of residual networks and proposes CottonNet‐Res, which improves the classification accuracy to 95.1%. Finally, a classification model based on feature difference fitting, CottonNet‐Fusion, is proposed to address the classification problem of foreign fibre images sampled in complex environments. The classification accuracy of foreign fibre images sampled in ordinary scenes has improved to 97.4%, while the images sampled in complex environments maintain an accuracy of 90.3%.

    وصف الملف: electronic resource

  4. 4
    دورية أكاديمية

    المؤلفون: Parviz Rostamzadeh, Marzieh Rassaf

    المصدر: مجله اقتصاد و توسعه کشاورزی, Vol 38, Iss 1, Pp 19-32 (2024)

    الوصف: IntroductionFood security is one of the most important issues in the world. The corona epidemic, Russia's attack on Ukraine, drought and many other factors have led to an increase in food prices. The sharp increase in global prices of basic food is considered a serious threat to global development, which leads to a significant increase in poverty, a decrease in the level of nutrition, and limited access to services such as education and health. The increase in the price of food in the world markets will also affect the domestic markets of the countries, especially for the countries that are large importers of food and have experienced heavy inflation in their countries. Iran is one of the countries that import food in the world, so higher global food price will undoubtedly affect various economic sectors of Iran. Considering the negative economic and social effects of the unbridled increase in food prices, the impact of global food prices on domestic prices has been the focus of recent studies. Materials and MethodsComputable General Equilibrium (CGE) model is a system of equations that explains an economy in its general form and the interaction between its components. One of the types of general equilibrium models is the GTAP model. This model is specific to global trade analysis and is multi-regional. This model is static (one-period) and includes several economic regions, several economic sectors, and a fixed amount of several production factors. The simulations will be done using the Run-GTAP software. This database has 129 districts and 57 economic sectors. In this study, two areas are considered; which includes Iran (IR) and the rest of the world (ROW). In the database software, all goods and economic sectors are grouped in 57 categories, which can be grouped in a maximum of ten categories or less. Here are four economic sectors: agriculture, industry and mining, oil and services, and three factors of production including labor, capital and land are considered. Results and DiscussionIn this study, the political experience of a 30 percent increase in the global price of agricultural goods will be examined. With a 30% increase in the global prices of agricultural products, the amount of demand reduction in the agricultural sector as a percentage of changes is equal to -1.37. As a result of the political shock the per capita utility of the private sector household has decreased by 1.32% and the per capita utility of the public sector has decreased by 2.14%. Also, the decrease in equivalent change as a welfare index is equal to -3349.05 million dollars. In a static model, the factors of population, technology and investment are assumed to be constant, so the amount of their change is zero, but in dynamic models, the positive or negative effects of these three factors can also be observed. Here (30% price shock on agricultural goods) efficient allocation is the most important factor affecting welfare (negatively). ConclusionIran is one of the importing countries in the past years in terms of grain demanding, and due to successive droughts and failure to observe a serious cultivation pattern in this area, it has faced the weakness of supplying part of its food needs. This forced Iran to import grains and food from other countries in the world, especially Russia. According to the increase in the food price index in the world, the possible effects of the increase in the global food price (30% shock) for Iran have been estimated using a global general equilibrium model. The results show that if the price of agricultural products in the world increases by 30%, the consumer price in Iran will increase in the agricultural sector and decrease in other sectors. Also, the amount of consumer goods will decrease in all sectors, while the amount of consumption of domestic goods will increase, except for the service sector, and the amount of consumption of imported goods will decrease in all sectors, especially the agricultural sector. In addition, the results show that the amount of production in the agricultural and oil sectors increases and has decreased in other sectors. Based on the EV welfare criterion, the welfare level of the private household decreases and the results of the welfare analysis show that the most important factor influencing the welfare is the effects of resource allocation (efficiency).

    وصف الملف: electronic resource

  5. 5
    دورية أكاديمية

    المؤلفون: Huanchen Tang, Xiaodong Liu, Meiyu Li

    المصدر: Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)

    الوصف: Abstract Agricultural products are pivotal to the national economy, and a comprehensive analysis of brand competitiveness significantly contributes to the support of agricultural structural adjustment and modernization. Focusing on the Yangtze River Delta region of China, this study develops an evaluation index system encompassing four dimensions: core brand competitiveness, brand management, market competitiveness, and innovation in branding. Utilizing a DEMATEL-ISM model, this research elucidates the intrinsic relationships among factors that influence brand competitiveness, resulting in a four-tier hierarchical model. The analysis delineates key factors at superficial, intermediate, and profound levels that influence brand competitiveness. Notably, regional production bases, along with innovations in brand technology and systems, emerge as profound influencers. Drawing on these findings, the study recommends strategies to enhance production foundations, accurately define development trajectories, spearhead technological innovation to foster collective reform efforts, and advocate for institutional advancements to bolster healthy brand growth.

    وصف الملف: electronic resource

  6. 6
    دورية أكاديمية

    المصدر: Discover Energy, Vol 4, Iss 1, Pp 1-18 (2024)

    الوصف: Abstract Most of the review research papers previously published were mostly focused on solar dryer design, development, performance evaluation, modification, technologies of solar dryers, etc. There were no works of literature reviews that specifically concerned how much solar dryers can carry. So, the review gives some clues about the carrying capacity of solar dryers. Measuring or knowing solar capacity has critical importance in the drying industry. It helps to produce quality dried products, design efficient solar dryers, and provide valuable insights for researchers, engineers and policymakers involved in solar drying technologies. The current review systematically examines the relevant scientific literature published between 2000 and 2023. The exclusion and inclusion criteria were used to identify the documents. A total of 1230 studies were selected for analysis, encompassing a wide range of geographical regions, crop types, and solar drying technologies. Based on the review conducted; solar dryers (direct, indirect, mixed, and hybrid) can vary between 1 and 250 kg in capacity applied for agricultural products drying purposes. According to the reviewed articles, the minimum loading capacities designed and recorded in the first, second, third, and fourth quinquennial periods were 1 kg, 1 kg, 4.75 kg.m−2, and 5.4 kg.m−2, respectively. In the same order as the minimum, the maximum loading capacities observed in the stated quinquennial periods were 250 kg/per day, 250 kg, 70 kg, and 45 kg, respectively.

    وصف الملف: electronic resource

  7. 7
    دورية أكاديمية

    المؤلفون: ChengYu Yang, Jun Liu, JianTing He

    المصدر: IET Image Processing, Vol 18, Iss 7, Pp 1796-1808 (2024)

    الوصف: Abstract In order to solve the safety and efficiency problems in the picking process of Waxberry, the slow speed and low precision of high‐density Waxberry target detection under a complex background were studied. A lightweight Waxberry target detection algorithm based on YOLOv5 is studied. In this study, C3‐Faster1 and C3‐Faster2 modules are proposed, which are located in the backbone and neck of the network: C3‐Faster1 can improve the model speed with a simple structure; C3‐Faster2 integrates the context attention mechanism and transform module based on C3‐Faster1 to make the network pay attention to the information of Waxberry image context and expand the channel receptive field. A new pyramid module, SPPFCSPC, is proposed to expand the sensing field and improve the accuracy of boundary detection. It also combines the Coordinate Attention (CA) and Dyhead dynamic detection head to suppress useless information and enhance the detection ability of small targets. Compared to YOLOv4, YOLOv7, and YOLOv8, mean accuracy percentage (mAP) improved by 5.7%, 9.4%, 8.3%. Compared to the base YOLOv5 model, mAP has improved from 86.5% to 91.9%, running on 2 GB Jeston nano, and the improved model is 5.03 frames per second (FPS) faster than YOLOv5. Experiments show that the designed module is more effective in Waxberry detection tasks.

    وصف الملف: electronic resource

  8. 8
    دورية أكاديمية
  9. 9
    دورية أكاديمية

    المصدر: Problems of the Regional Energetics, Vol 62, Iss 2, Pp 138-147 (2024)

    الوصف: The aim of this study is to determine the energy-efficient dehydration regimes for agricultural products based on suspension heat treatment method. In order to achieve this goal, an electrical plant was designed, developed, tested, optimized and implemented, on the basis of which the research was carried out, applying in the drying process, namely the process of technological processing in suspension with the contribution of convection. The research was focused on the example of drying different agricultural products; in particular, the following products were selected as the main object of the research: hawthorn, apple, quince, pear and grape seeds. These agricultural products were selected as at the moment they were not fully exploited. Because of their rich content of vegetable oils with specific properties, they are of great interest to the food industry, traditional medicine, cosmetology, pharmacology, etc., and their drying using conventional methods is difficult, particularly because of defects and adverse reactions, which frequently occur in the technological processing. The main results obtained using the designed installation, are: reduction of the electricity consumption and the processing time, increase in the productivity and quality of the final products. The significance of the results obtained in the research lies in solving a number of problems currently faced by the processors, in connection with the improvement of equipment and increasing the efficiency of the drying process, mainly by increasing the energy efficiency, processing speed, quality of products and profitability.

    وصف الملف: electronic resource

  10. 10
    دورية أكاديمية

    المصدر: Baltic Journal of Economic Studies, Vol 10, Iss 1, Pp 210-215 (2024)

    الوصف: In an unstable and rapidly changing economic environment, it becomes even more difficult to determine the state and prospects of development of specific markets, especially regional ones, where specific conditions are in place. In order to effectively coordinate the development of a particular regional market, it is necessary to clearly define the extent to which its potential has been exploited and to identify the factors that influence the formation of the regional market's potential. The subject of the study is the theoretical and methodological foundations of managing the potential of regional markets. The aim of the study is to develop a model for managing the potential of the regional market. Methodology. To achieve the goal of the study, the following tasks were set and solved: a critical analysis of approaches to the definition of the concept of "regional market potential" was carried out, the theoretical and methodological foundations for the formation of a model for managing the potential of the regional market were substantiated, the components of this model were clarified, and the types of links between the components of the model for managing the potential of the regional market were identified. The paper uses the following methods and approaches to research: abstract and logical approach used in the study of the theoretical and methodological foundations of interaction management, analysis of theoretical approaches to the formation of a model for managing the potential of the regional market, inductive and deductive (used to determine the factors influencing the formation of a model for managing the potential of the regional market), systematisation and generalisation (to clarify the concept of "regional market potential"). Results. The research considers the processes of formation and management of the potential of regional markets. It reveals the essence of the concept of "potential of the regional market" on the basis of studying the definition of the concept of "potential". The article describes and groups approaches to determining the market potential of a region and formulates its own definition of the regional market potential as "the upper limit of production, sales and consumption of a certain type of product in the region, at which the financial interests of market participants are maximally satisfied, for which the existing resources are sufficient". The publication identifies the factors influencing the state of the regional market potential: industrial capacities, development of regional infrastructure and logistics, demographic situation, population income and purchasing power, resource provision of the region, opportunities for international trade. The article characterises the structure of the regional market potential: the forming component (production, consumer and trade potential) and the ensuring component (socio-economic potential of the region). A model of management of the regional market potential is proposed. Practical implications. The proposed model will help to clarify the role and functional relationships between the components of the regional market potential and take into account the peculiarities of the functioning of regional markets in the implementation of market forecasts. Value/originality. In the structure of the regional market potential, unlike the well-known ones, the forming and ensuring components of the regional market potential are distinguished. The addition of the trade potential component to the traditional forming components, such as consumer and production potential, will allow taking into account trade opportunities and conditions for fast and high-quality trade organisation in the region.

    وصف الملف: electronic resource