|
|
|
| Registros recuperados: 18 | |
|
|
| Macher, Claire; Guyader, Olivier; Boncoeur, Jean. |
| This paper proposes a formal analysis of the discarding issue including the sorting labour costs. Empirical evidences from an application to the Nephrops fishery in the Bay of Biscay show that sorting is an important time consuming activity on board and a factor of discarding. However existing literature does not explicitly take into account the sorting activity and mainly focus on quota and catch constraints. The discarding model described in the paper includes sorting as a factor explaining discards. The costs of sorting landings and the time to sort them are included in the approach. The model is developed for one species studied at a tow scale with the assumption that catches are exogenous. It is shown that taking sorting costs into account, discarding... |
| Tipo: Text |
Palavras-chave: Discarding behaviour; Sorting; Microeconomic model; Nephrops fishery; Effort constraints. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/00511/62306/66554.pdf |
| |
|
| |
|
| |
|
| |
|
|
| Bakhtiari, Mohammad Reza. |
| Potato is one of the most important agricultural products that has great nutritional and industrial value. Potato seed tubers are usually used for growing this crop, but separating the seed tubers from the edible ones is tedious, time consuming and costly process. Therefore, a rotating potato sorting machine was designed, developed and evaluated in this research. This machine was able to sort potato tubers according to their size. Effects of sieves slope angle and rotational speed on the tubers mechanical damage, sorting accuracy and capacity of designed machine were evaluated. The test was conducted in the factorial experiment format with three replications based on a completely randomized experimental design. Three levels of sieves slope angle (5, 10 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Design; Development; Edible; Potato; Seed; Sorting. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7299 |
| |
|
|
| Homer,Ian; García-Ramos,Francisco Javier; Ortiz-Cañavate,Jaime; Ruiz-Altisent,Margarita. |
| A non-destructive impact sensor to measure on-line fruit firmness was evaluated. This sensor is an adaptation of a static model used in the laboratory to measure fruit quality and was installed in an experimental fruit packing line with a commercial sizer chain. The firmness index is related to the acceleration-time curve supplied by an accelerometer attached to an impacting arm. The main objective of this study was to evaluate sensor performance and sources of variation. We made classification trials on three fruits: peaches (Prunus persica (L.) Batsch), apples (Malus domestica Borkh.), and pears (Pyrus communis L.), as well as working trials, such as placing the fruit, orientation, and others. The sensor works correctly at a speed of 7 fruits s-1 (0.63 m... |
| Tipo: Journal article |
Palavras-chave: Packing line; Fruit quality; Peach; Low-energy impact; Sorting. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100007 |
| |
|
| |
|
|
| Sabzi, Sajad; Javadikia, Payam; Rabbani, Hekmat; Adelkhani, Ali; Naderloo, Leila. |
| OranOrange has abundant nutritional properties and is consumed worldwide. Sorting oranges of different masses based on their physical traits could help reduce packaging and transportation cost. The ‘Blood’ cultivar of Iranian oranges from Kermanshah province of Iran (7.03 °E 4.22 °N) was used in this study. 100 samples were randomly selected. During the two-day experiment, all measurements were carried out inside the laboratory at mean temperature of 24°C. In this study, some physical properties of ‘Blood’ orange were measured, such as length, width, thickness, volume, mass, mean value of geometric diameter, sphericity and projected area. ANFIS and linear regression models were employed to predict the mass based on sphericity and mean of projected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Linear regression; Orange; Packaging; Physical properties; Sorting. |
| Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2348 |
| |
|
| |
|
| |
|
|
| Halloran, Paul R.; Rust, Nigel; Rickaby, Rosalind E. M.. |
| Trace element analysis of open-marine sedimentary carbonates provides a wealth of paleoclimate data. At present, the majority of this data is obtained from foraminifera tests. Complications regarding the variability of conditions experienced by foraminifera throughout test formation and the influence of diagenetic processes on sample chemistry limit the value of foraminifera samples in certain situations. Coccoliths, the calcium carbonate plates produced by coccolithophores, represent a second major pelagic open-marine carbonate source with the potential to provide a wide range of valuable trace element proxy data but which have, until now, been unavailable for analysis of many trace elements because of clay contamination. Here we describe a novel... |
| Tipo: Text |
Palavras-chave: Coccolith; Coccolithophore; Clay; Sorting; Trace element; Geochemistry. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00220/33080/31542.pdf |
| |
|
|
| Koontz, Stephen R.; Hoag, Dana L.; Brethour, John R.; Walker, Jodine L.. |
| The cattle industry batch markets animals in pens. Because of this, animals within any one pen can be both underfed and overfed. Thus, there is a production inefficiency associated with batch marketing. We simulate the value of sorting animals through weight and ultrasound measurements from original pens into smaller alternative marketing groups. Sorting exploits the production inefficiency and enables cattle feeding enterprises to avoid meat quality discounts, capture premiums, more efficiently use feed resources, and increase returns. The value of sorting is between $15 and $25 per head, with declining marginal returns as the number of sort groups increases. |
| Tipo: Journal Article |
Palavras-chave: Cattle feeding; Production efficiency; Simulation; Sorting; Value-based marketing; Ultrasound; Agribusiness; Livestock Production/Industries; Marketing; Research and Development/Tech Change/Emerging Technologies; C15; D21; D23; Q12. |
| Ano: 2008 |
URL: http://purl.umn.edu/47266 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Bayer, Patrick; McMillan, Robert; Rueben, Kim. |
| This paper sheds new light on the forces that drive residential segregation on the basis of race, assessing the extent to which across-race differences in other household characteristics can explain a significant portion of observed racial segregation. The central contribution of the analysis is to provide a transparent new measurement framework for understanding segregation patterns. This framework allows researchers to characterize patterns of segregation, to decompose them in meaningful ways, and to carry out partial equilibrium counterfactuals that illuminate the contributions of a variety of non-race characteristics in driving segregation. We illustrate our approach using restricted micro-Census data from the San Francisco Bay Area that provide a rich... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Residential segregation; Racial segregation; Sorting; Housing markets; Labor and Human Capital; H0; J7; R0; R2. |
| Ano: 2003 |
URL: http://purl.umn.edu/28435 |
| |
|
| |
| Registros recuperados: 18 | |
|
|
|
