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| Registros recuperados: 1.540 | |
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| Ni, Zhijiang; Burks, Thomas F.. |
| Three dimensional (3D) reconstruction of the plant or tree canopy is an important step in order to measure canopy geometry, such as, height, width, volume, and leaf cover area. In this research, binocular stereo vision was used to recover the 3D information of the canopy. A revised camera calibration method was provided to calibrate the cameras in world coordinate system. Only two images were used to realize a dense reconstruction. These two images were firstly rectified to make sure the corresponding feature points in the left and right images were on the same horizontal line. An efficient large scale stereo matching (ELAS) algorithm was used to find the disparity map. The plant or tree canopy was finally reconstructed based on these calibrated camera... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4358 |
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| R. Freimann. |
| Within a continuous development of mobile agricultural machinery the application and further introduction of electronic controls is offering the fare most potential for working processes optimization. The article gives an introduction to tractor and implement controls, especially targeting implement guided tractor control, underlined with two executed examples for this advanced control design. A structured development model and basic knowledge on safe and robust control loop set-ups were developed. Potential conflict scenarios within the multi master control system of driver, tractor, implement and independently pre-planned task control were identified and solved by arbitrational state strategies. The two exemplarily executed demonstration examples utilize... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/934 |
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| Atoyebi, Jelili Olaniyi; Bello, Sururah Apinke; Owolarafe, Oseni Kehinde. |
| The significance of a break-even point analysis is much important to the small- scale enterprises in determining profit or loss incurred. In this study, a case study approach was used to test this concept on iru production using structured oral interviews and visual observation of a production centre in Nigeria. Data analysis was achieved using production cost, the unit quantity and break-even point analysis. The results show that the monthly average cost of N 32,237.00, the monthly average variable cost of N71,334.00, Contribution Margin Ratio of 47.06 % and break-even sales of N 68,502.00 were obtained using a traditional method of iru production (TIPP). In a mechanized method (MIPP), monthly average fixed cost of N 85,887.00, the monthly average... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Locust bean- processing; System; Traditional; Mechanized; Break-even analysis; Production cost; Profitability. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6721 |
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| Shafaei, Seyed Mojtaba; Loghavi, Mohammad; Kamgar, Saadat. |
| This paper communicates the prediction of required draft force of disk plow implement during tillage operations. The well-known mathematical model proposed by American Society of Agricultural and Biological Engineers (ASABE), multiple linear regression (MLR) and data mining model, based on artificial neural network (ANN), were employed for this purpose. The input variables of the models were considered as forward speed of 2-6 (km/h) and plowing depth of 10-30 (cm). The development details of the models are documented in the paper. On account of statistical performance criteria, the best ANN model with coefficient of determination of 0.971, root mean square error of 0.762 (kN), mean absolute percentage error of 1.886 (%) and mean value of absolute... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4466 |
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| Parmar, Mansukhlal Ramjibhai; Kumpavat, Mahendrasinh T.; Doshi, Jayesh Sevantilal; Kapdi, Shyamsundar S.. |
| Basil is a popular aromatic and annual herb growing in many regions of the world. Immediately after its harvesting, the highly perishable raw material, i.e. leaves, have to be preserved against deterioration and spoilage. More often, during peak period, most of the crop is lost/wasted due to lack of proper post-harvest processing techniques. Drying is by far the most widely used treatment, which needs to be performed very carefully and preciously so as to preserve the aroma and color of the leaves. Various drying treatments and experimental methods viz., solar drying, tray drying, vacuum drying and fluidized bed drying were carried out at the temperatures of45°C,55°Cand65°Cto find and suggest the optimum drying condition for acquiring quality dried... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Post Harvest Process and Food Engineering drying; Drying characteristics; Basil leaves; Solar drying; Tray drying; Vacuum drying and fluidized bed drying. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3867 |
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| Allahyari, Mohammad Sadegh; Firouzi, Saeed; Pourrahman, Bahram; Marzban, Soroush. |
| The main purpose of this study at the first phase was to rank all rice transplanters used in Guilan Province by relevant experts in the area from technical, social, and economic aspects. After the most appropriate type was identified, the technical skillfulness of operators to use this specific type was assessed in the second phase. To this end, the analytic hierarchy process (AHP) was applied and the opinions of experts for exploring the most appropriate rice transplanter based on ergonomics, economic advantage, reliability, field capacity, ease of use, ease of repairs and access to spare parts, compatibility with plot conditions, planting density range, compatibility with different soil conditions and planting quality perspective was assessed. To... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mechanization; Agricultural Machinery; Technical Skills; Rice Transplanter; Prioritization. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7167 |
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| R. C. Dash; College of Agricultural Engineering and Technology. |
| Selection of proper size of farm power and machinery is the most important component of any farm enterprise. Among the various inputs to the crop production system, power and machinery jointly represent the largest single item of expenditure constituting about 60% of the total investment on a farm. The decision on optimum size of machinery is quite critical not only because of the high proportion of total cost attributed to machinery but also due to the infrequency and irrevocability of such decisions. Computer based least cost models were developed in C programming language for the selection of optimum size power and machinery system for paddy-wheat cropping system with the input like area under the crop, soil type, number of operations for each crop,... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1245 |
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| Rangaraju, Visvanathan. |
| The size distribution of cocoa pods was measured and the average length and breadth were 147.5 and 74.2 mm, respectively. Based on length, the pods were categorized as less than 120 mm, 120 to 140 mm and above 140 mm, which were 28, 37 and 35% of the whole lot. The breadth varied from 60 mm to 110 mm and the major contribution was 18, 28, 36, 12, 4 and 2% for the ranges, below 70 mm, 70-80 mm, 80-85 mm, 85-90 mm, 90-100 mm and 100-110 mm, respectively. A direct proportion between the length and breadth was noted. The sphericity and aspect ratio ranged 0.54 to 0.68 and 0.4 to 0.57. The coefficient of static friction increased in the range 0.503 to 0.738 with moisture content range of 50.3 to 76.4% (d.b.) against various surfaces, also the rolling angle... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cocoa pods; Size distribution; Divergent type grader; Capacity; Effectiveness.. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7049 |
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| Mohamed, Hend Nabil. |
| Abstract:This study aims to use the method of laser reflection from the surface of strawberry fruits to classify different strawberry defects to facilitate the process of sorting the fruits during the handling process. The study was conducted on exposing the strawberry fruits (festival variety) by laser radiation with wavelengths of 543.5 and 632.8 nm, after dividing the fruits into six groups according to strawberry defects, to measure the amounts of reflected radiation and generated electricity. The results obtained were the following: a) For the physical and chemical properties of strawberry fruits: It was found that there is no dispersion in (height, width, length, volume, weight, total soluble solids (Brix) and the pH value of the fruits). Their... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6483 |
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| M. W. Hannan; University of Florida; T. F. Burks; University of Florida; Duke M Bulanon; University of Florida. |
| Over the last several years there has been a renewed interest in the automation of harvesting of fruits and vegetables. The two major challenges in the automation of harvesting are the recognition of the fruit and its detachment from the tree. This paper deals with fruit recognition and it presents the development of a machine vision algorithm for the recognition of orange fruits. The algorithm consists of segmentation, region labeling, size filtering, perimeter extraction and perimeter-based detection. In the segmentation of the fruit, the orange was enhanced by using the red chromaticity coefficient which enabled adaptive segmentation under variable outdoor illumination. The algorithm also included detection of fruits which are in clusters by using... |
| Ano: 2009 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1281 |
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| Ogundahunsi, Olufemi Emmanuel; Ogunsina, Babatunde Sunday; Ibrahim, Raheem O.. |
| Cracking of dika nut has presented serious challenges to local processors considering the arduous task it constitutes during processing. A motorized machine that is capable of multiple cracking of dika nuts was designed, fabricated and tested. The major components of the machine include a sliding hammer, a gear unit, a chain conveyor and cracking trays. The experimental machine was evaluated on the basis of cracking efficiency and throughput considering three types of pre-treated nuts (sun-dried, oven-dried and roasted) and two nut sizes (small and big). The cracking efficiency and throughput were: 65% and 8.84kg/h, 63% and 7.75kg/h, 45% and 5.67 kg/h for roasted, oven-dried and sun-dried small nuts; while the corresponding values for big nuts were: 72%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Post harvest technology; Processing machines motorized; Machine; Dika nut; Cracking. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3614 |
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| Handrinos, Michael; Rotsios, K.; Moshonas, G.; Folinas, D.. |
| The aim of this paper is to design a friendly-user framework for a successful launch of a locally-based start-up in the food supply chain. Specifically, the study is focused on a Small Medium Enterprises (SME’s) cooperative store in a farm school. The store is operated by the students in the context of their entrepreneurship, business and marketing classes. Authors made a number of interviews with the managers and employees of the locally-based store so as to identify its potentials and challenges. The outcome of the study is a framework dealing with managerial, as well as, technological aspects and even if refers to a specific SME it will act as a road map for an effective start-up development. Keywords: customer loyalty, American farm school, SME... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Customer loyalty; American farm school; SME co-operatives; Agri-business. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2911 |
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| M. Z. Hossain. |
| It is evident that the inadequate frictional resistance and meager cohesion of conventional reinforcements in reinforced earth structures such as geogrids, geosynthetics and wire meshes are serious shortcomings that not only impose constraints in structural designs, but also affect the stability of reinforced earth structures. In this regard, the benefits of earth reinforcing materials in improving the interaction resistances are eminent. For the reinforcement to be effective, two conditions need to be satisfied i.e. it must possess enough strength to withstand tension failure and adhesion failure. This paper highlights some experimental results on the performance behavior of thin cementitious composite elements reinforced by wire meshes under shear tests... |
| Ano: 1969 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1228 |
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| BİLGİN, Sefai. |
| Greenhouse cultivation is widespread in Turkey, and tomato, pepper and eggplant among the vegetables are grown densely in greenhouses. Every year, huge amounts of crop residue are produced from these greenhouses, and the vast majority of these residues are dumped in landfills and out of the greenhouses without evaluating in any way. These crop residues are organic matters and can be evaluated as a biomass energy source. In this study, dried ground greenhouse pepper crop residues were briquetted in the hydraulic press with maximum capacity of 210 MPa and a punch-conical die set, and physical properties of briquettes regarding briquette quality were determined. The briquetting experiments were conducted at 7.06 % moisture content (w.b.), 0.732 mm geometric... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Greenhouse pepper crop residue; Briquette; Briquette physical properties; Turkey. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3163 |
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| Registros recuperados: 1.540 | |
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