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The paper deals with algorithms for solving logistics problems. It describes types of heuristic algorithms focusing on their strengths and weaknesses. Incorporating the advantages and disadvantages of heuristic algorithms, it offers feasible solutions. [ABSTRACT FROM AUTHOR]

The objective of this article is to provide an in-depth exploration of the complex task of container storage at seaports, a problem characterized as one of the challenging NP (Non-Deterministic Polynomial time) problems. Seaports are faced with the dilemma of accommodating a finite number of containers due to the constrained surface area available, making the management of container storage operations a formidable task.

In accordance with the conventional layout of dangerous goods containers, the strong thermal radiation generated by the LNG tank container leakage during storage periods would easily cause the structural damage among adjacent LNG tank containers and even chain accidents. In this study, the international general accident consequence analysis software PHAST was applied to simulate the consequences of fire accidents in the typical leakage scenarios of LNG tank containers during the storage periods. The risks associated with the layout of conventional dangerous goods containers were analyzed in detail, and the concept of LNG tank groups was innovatively proposed. Based on this, a layout design scheme for storage area of a dedicated LNG tank container yards was constructed. This scheme can control the influence of fire thermal radiation in the typical leakage scenario of LNG tank containers during the storage periods within the scope of tank groups, avoid the chain interference among adjacent tank groups, and ultimately improve the overall safety levels in storage areas. This study has already been applied to engineering practice, and has high reference value. [ABSTRACT FROM AUTHOR]

Copyright of Automobile Technology & Material is the property of Automobile Technology & Material Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The reliability interception of network attack is realized by data access control in network security storage area, and the data security in network is guaranteed. The traditional free link decentralized control model is used to control the data access in the secure storage area of the network. The data access control system of network security storage area includes communication library, protocol base, core control library and resource library. The association rule feature extraction method is used to design the data mining and attack detection algorithm of the network security storage area, which is the core of the data access control system software in the network security storage area. The kernel of the optimal interface in the network security storage area is set up by SDICmdCon register, and the software development of data access control in the network security storage area is realized by the adaptive partition weighted interface scheduling under the embedded Linux environment. This paper considers the novel perspective the data access control method of cloud network secure storage under Social Internet of Things environment. The simulation results show that the model is accurate for data mining and attack detection in the network security storage area, and the security of data access control is improved, which ensures the network security 21% higher than the traditional methods. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Transportation & Logistics / Ulaştırma ve Lojistik Dergisi is the property of Journal of Transportation & Logistics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In enterprises with limited capacities and a low-powered grain drying facilities there is a problem of economical and reliable storage of dry, wet and moist grains. One of the options for its successful solution is the application of grain storage technology in silo bags, tested in many enterprises, the basic principle of which is based on the self-preservation of grain under hermetic conditions in an environment of carbon dioxide. To implement this technology, it is necessary to determine the suitability of the batch of grain for loading in the silo bags on the basis of an operational analysis of the grain quality. After loading the grain, the silo bags are sealed, the grain mass is stored for a certain time and then unloaded. After many years of industrial testing of grain storage technology in silobags, recommendations have been developed that allow to ensure the quantity and proper quality of grain in the process of implementation of the technology. To do this, it is provided to carry out a whole range of activities - personnel training, the selection and preparation of a storage area for grain, deratization, the determination of the quality of grain at all stages and a safe shelf-life, depending on the condition of the grain, weighing of the grain; loading silo bags and placing them on the site; drawing of marks for identification of silobags; monitoring of the state of silo bags and grain and the restoration of the integrity of the silo bags throughout the storage period; accounting for grain in the silobags; processing of unconditioned grain; object protection, final analysis of the work performed, identify problems and ways to solve them. The storage site for grain in the silo bags must be cleaned of stubble and grass, sharp objects, grain residues, solid hardwood or the most densely packed soil (the clay surface is undesirable, as precipitation makes imposible laying and unloading of silobags), ensure no stagnation of water during rains and melting snow, provide the possibility of free movement of special equipment on the site. It must be deratized and fenced with a mesh with small openings, a height of at least 1 m and dipped. The analysis of the characteristics of three-layer silobags showed that to optimize the storage of dry grain, it is advisable to use the largest silobags of 90 m in length, since they have a larger capacity, there will be less time spent on dressing and sealing the silobags, saving space between the silo bags lying along one another , there will be less length of silobags to go for tying, as well as saving money on the cost of silobags, the cost of working time and fuel (decreases the number of transfers of special equipment). It is advisable to take into account the possibility of unloading the sleeve during one shift. At all stages (loading, storage, unloading) the determination of the quality of grain, monitoring the condition and restoring the integrity of the silo bags checking the sanitary condition of the site and the presence of baits should be carried out. Precautions should be observed, grain accounting, working with non-standard grain and final analysis of grain storage results should be carried out.

The purpose of this research is to evaluate the impact of climate change, area decline of storage areas due to land levelling and dyke building activities on the water level at downstream of the Sai Gon – Dong Nai river system. The research methods were used include trend analysis and relation analysis between water levels and area of storage areas. The annual statistical data of typical water levels were collected at five monitoring stations from 1980–2018. The area was determined by satellite image classification. Thirty-two images of Landsat 5 and Landsat 8 in 1980–2018 period were used. The results indicated, due to the impact of climate change, the highest and lowest water level of station on the sea (Vung Tau) rose about 0.35 and 0.31 cm/year, respectively. At stations on the river, due to the simultaneous impact of sea-level rise and storage area decline, the water levels changed quite differently from Vung Tau. At stations near the storage areas such as Nha Be and Phu An, the highest water level rose about 1.1–1.2 cm/year, meanwhile, the lowest water level fell or rose insignificantly. There was a tight correlation between typical water levels and the area of storage areas over time, especially at stations near the storage areas. The study results have contributed to clarifying the cause of the extraordinary increase in the highest water level at downstream of the research area. [ABSTRACT FROM AUTHOR]

The report analyzes the possibility of using analytic hierarchy process in logistics demand forecasting. It proposes a method to estimate parameters of the individual values of the analysis. [ABSTRACT FROM AUTHOR]

Mathematical models are proposed that establish interrelations between the individual parameters of a warehouse of packaged piece cargo. The models were used in the study of the mutual influence of the parameters on each other, also the capacity of the warehouses of packaged cargo

In enterprises with limited capacities and a low-powered grain drying facilities there is a problem of economical and reliable storage of dry, wet and moist grains. One of the options for its successful solution is the application of grain storage technology in silo bags, tested in many enterprises, the basic principle of which is based on the self-preservation of grain under hermetic conditions in an environment of carbon dioxide. To implement this technology, it is necessary to determine the suitability of the batch of grain for loading in the silo bags on the basis of an operational analysis of the grain quality. After loading the grain, the silo bags are sealed, the grain mass is stored for a certain time and then unloaded. After many years of industrial testing of grain storage technology in silobags, recommendations have been developed that allow to ensure the quantity and proper quality of grain in the process of implementation of the technology. To do this, it is provided to carry out a whole range of activities - personnel training, the selection and preparation of a storage area for grain, deratization, the determination of the quality of grain at all stages and a safe shelf-life, depending on the condition of the grain, weighing of the grain; loading silo bags and placing them on the site; drawing of marks for identification of silobags; monitoring of the state of silo bags and grain and the restoration of the integrity of the silo bags throughout the storage period; accounting for grain in the silobags; processing of unconditioned grain; object protection, final analysis of the work performed, identify problems and ways to solve them. The storage site for grain in the silo bags must be cleaned of stubble and grass, sharp objects, grain residues, solid hardwood or the most densely packed soil (the clay surface is undesirable, as precipitation makes imposible laying and unloading of silobags), ensure no stagnation of water during rains and melting snow, provide the possibility of free movement of special equipment on the site. It must be deratized and fenced with a mesh with small openings, a height of at least 1 m and dipped. The analysis of the characteristics of three-layer silobags showed that to optimize the storage of dry grain, it is advisable to use the largest silobags of 90 m in length, since they have a larger capacity, there will be less time spent on dressing and sealing the silobags, saving space between the silo bags lying along one another, there will be less length of silobags to go for tying, as well as saving money on the cost of silobags, the cost of working time and fuel (decreases the number of transfers of special equipment). It is advisable to take into account the possibility of unloading the sleeve during one shift. At all stages (loading, storage, unloading) the determination of the quality of grain, monitoring the condition and restoring the integrity of the silo bags checking the sanitary condition of the site and the presence of baits should be carried out. Precautions should be observed, grain accounting, working with non-standard grain and final analysis of grain storage results should be carried out. [ABSTRACT FROM AUTHOR]

This work discusses the problem of dangerous containers storage in a container terminal. Container terminal represents an essential intermodal interfaces for global transportation network. Several materials handling possible to move containers at the port to better meet the needs of ships awaiting loading or unloading. Have a good organization of the terminal's container storage area requires a special effort. Containers search times can be considerable and lead to delays causing financial penalties for terminal management operators. An optimal location for a container in a terminal is very important for companies because this operation reduces transportation costs. In this article, we propose an approach for the placement problem of hazardous containers through the description of an optimization model to solve and optimize available storage space. The interest of this work is to develop a computer tool to enable the identification of the best location of a hazardous container using the Genetic Algorithm.

Author explains a necessity of supply optimization to construction sites with small storage areas. This paper takes account of conditions existing in Poland. From among all factors discussed by the author, first of all, we should point at construction works on plots located in densely built-up areas, obtained by demolition of existing buildings, as well as a necessity of plots utilization after demolished buildings that technical conditions do not allow for further exploitation.