A two-stage decomposition method on fresh product distribution problem

Most people in Batam hinterland work as a fisherman. The process of the fishery product distribution, however, is inefficient. The absence of marketplace causes fishermen's difficulty in selling their fishery products. This sales and distribution problem can be mediated using our web application. This research attempts to facilitate customer to customer (C2C) transaction by providing fishery products information via text messages. The SMS gateway is deemed to be the best alternative in a rural area with poor infrastructure. Fishermen are only required to send information about their fishery product in a text message with their phone and the system will receive and display them. The payment is then done using the Cash on Delivery system (COD). This research concludes that the system runs smoothly; it can display the fishery product offers and manage the fishermen and their fishery product data. The SMS gateway test showed a good result in the experiment involving 10 consecutive texting with three different treatments.

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Modified L-shaped Decomposition Method with Scenario Aggregation for a Two-Stage Stochastic Programming Problem

Information Technology And Control ◽

10.5755/j01.itc.47.4.20103 ◽

2018 ◽

Vol 47 (4) ◽

Author(s):

Ana Ušpurienė ◽

Leonidas Sakalauskas ◽

Gediminas Gricius

Keyword(s):

Stochastic Programming ◽

Programming Problem ◽

Decomposition Method ◽

Two Stage ◽

Stochastic Programming Problem ◽

Scenario Aggregation

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Simulation of two-stage automotive shredder residue pyrolysis and gasification process using the Aspen Plus model

BioResources ◽

10.15376/biores.16.3.5964-5984 ◽

2021 ◽

Vol 16 (3) ◽

pp. 5964-5984

Author(s):

Bin Yang ◽

Ming Chen

Keyword(s):

Process Parameters ◽

Aspen Plus ◽

Product Distribution ◽

Recycling Rate ◽

Main Process ◽

Optimal Process ◽

Two Stage ◽

Shredder Residue ◽

Gasification Process ◽

Automotive Shredder Residue

The disposal of automotive shredder residue (ASR) directly affects China’s goal of achieving a 95% recycling rate for end-of-life vehicles. Pyrolysis and gasification have gradually become the most commonly used thermochemical technologies for ASR recycling. To obtain more hydrogen-rich syngas, it is necessary to determine the optimal process parameters of the ASR pyrolysis and gasification process. The main process parameters of the two-stage ASR pyrolysis and gasification process were studied using the established Aspen Plus model. Through analyzing the effects of process parameters, such as the temperature, equivalence ratio, and mass ratio of steam to ASR feedstock, on the product distribution and product characteristics of ASR pyrolysis and gasification, the optimal process parameters were determined. A series of comparative experiments under different conditions were conducted. The experimental results verified the accuracy and reliability of the Aspen Plus simulation model for the ASR pyrolysis and gasification processes and verified the practical feasibility of the process parameters obtained from the simulation analysis.

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