Temporary Warehouse Research Articles

Waste Valuation and Problems Encountered In Waste Bank Management: A Case Study at BSU ASRI BMP

Community participation-based waste management has been carried out by DKLH Jember Regency through the establishment of the Main Waste Bank its derivative organization, namely the Unit Waste Bank at a lower level. In this system, the effort being made is the integration of waste management, starting from the household as a producer, followed by sorting, then depositing it to BSU and ending with delivery to a temporary warehouse so that the waste is handled properly. This article aims to explore the potentials and problems encountered in the management of a Waste Bank which involves the participation of residents while still paying attention to aspects of economic feasibility. The research was carried out using the analitcal descriptive via interview and analysis of primary data owned by BSU ASRI BMP with due observance of scientific principles and maintaining the independence and interests of the authors. From the results of the research it is known that waste valuation efforts by providing economic value to each component of waste produced by each household are able to generate citizen interest in sorting and depositing the waste produced. The main contributors in the transfer of inorganic waste from BSU to BSI sequentially are paper, plastic and metal waste with the highest exchange rate ratio in metal waste. The main problem faced in the management of waste banks is the motivation of residents to independently handle daily waste. Besides that, there are also management constraints because the managers are housewives who must divide their time and attention for routine daily activities.

ЗНАЧЕНИЕ КРИТЕРИЕВ "УДЕЛЬНАЯ ЗЕМЛЕЕМКОСТЬ" И "ЗЕМЛЕВАНИЕ" В ОБОРОТЕ ЗЕМЕЛЬНЫХ РЕСУРСОВ ПРИ РАЗРАБОТКЕ МЕСТОРОЖДЕНИЙ

The questions of evaluation of land resources used by quarries during the mining of fields of solid minerals by the continuous system are considered. In order to preserve the fertility of soils stored in temporary warehouses, the front of land and the front of mining operations should provide a balance of ecological equilibrium in the soil layer. The difference between the front of excavation and the front of mining operations on the lower mining ledge should be minimal.

Supply Chain Performance of Logistic Business Using SCOR Model in Tg.Priok Port Jakarta

This study aims to identify and evaluate accurately the measurement process of Supply Chain Management of port operators in Tanjung priok jakarta. The target of this research is several sea transportation companies, especially loading and unloading companies in Jakarta. Loading and unloading companies with experience in these ports will later be able to help direct students in the Independent Campus Self-Learning process in Indonesia through an internship program. The main problem in the delayed loading and unloading process is the loading and unloading workers, especially at the Tanjung Priok Port, Jakarta. This study uses a qualitative descriptive analysis with the SCOR method through five measurement processes, namely Plan, Source, Make, Deliver, and Return. The loading and unloading conditions at three major ports in Indonesia are the benchmarks in this research. The research sample consisted of several company leaders in the transportation and logistics industry as informants from the port authority Regional Tanjung Priok Port Branch Jakarta, the findings of this study were to determine the Dwelling Time related to the desired Container Yard at the port as a temporary warehouse for loading and unloading companies and management of loading and unloading workers at ports that must be considered.

Development of Integrated Distribution and Inventory System Simulation Model Using Mobile Depot

Distribution activities are carried out to move an item from one point to another. Product distribution activities are conducted from the production area to the distribution or warehouse area, then from the warehouse to the retailer or consumer. Distribution activities can be established using various modes of land, river, ocean, and air transportation. Land transportation is greatly influenced by road conditions. River and sea transportation excels in carrying capacity which leads to the reduction of distribution costs. The disadvantages of water transportation are longer moving duration and dependence on weather. A warehouse is a typical facility used to accommodate inventory. Inventory system will generate holding costs. River transportation with a large carrying capacity can be used as a distribution medium and temporary warehouse. The land route in the West Kalimantan region is suitable for trucks with a moderate carrying capacity. River routes in West Kalimantan can reach several strategic areas, and river conditions have appropriate specifications for transportation mode with large capacities. The distribution and inventory system integration model using a mobile depot has been proposed in previous studies. Therefore, this research focuses on developing a simulation model for the aforementioned system. The results of this study are expected to provide information about the optimal value of the model configuration and strategy.

РЕЗУЛЬТАТЫ ЭКСПЕРИМЕНТАЛЬНЫХ ВЫДЕРЖЕК БРИКЕТИРОВАНИЯ ЛЕСОСЕЧНЫХ ОТХОДОВ В УСЛОВИЯХ ЛЕСНЫХ ТЕРМИНАЛОВ

About 100 million m3 of timber waste is generated at forest terminals in the Russian Federation, with a harvesting volume of about 500 million m3 of timber. Waste generated at the terminal can be used to produce generator gas, but this requires preliminary preparation of the raw materials. A homogeneous structure of raw materials is recommended for the efficient use of gas generating plants. It can be achieved, for example, by briquetting the waste after it has been crushed. At the same time, the process of briquetting waste at forest terminals will differ from briquetting in the conditions of specialized enterprises. Timber terminals, which are temporary warehouses for timber, usually do not have a centralized electricity connection. The use of internal combustion engines as power plants significantly increases the cost of the woodworking process, since the cost of fuel is quite high, and the efficiency of internal combustion engines is much lower than that of electric motors. In this regard, the search for the most optimal mobile power plants for power supply of forest terminals is a very urgent task. It is preferable to use lighter presses at terminals, since the requirements for density and strength of briquettes for gas-fired plants are lower than for biofuels intended for sale. Known studies are focused mainly on the production of fuel briquettes sold to third-party consumers with a density of more than 1000 kg/m3. The strength is sufficient at a density of briquettes up to 800 kg/m3 for feeding briquettes into gas generating plants. The deformation characteristics of the compacted material will be different in the indicated density range. It requires further experimental studies

Penerapan Metode HIRADC pada Bagian Proses Penerimaan di PT. CA

Every job has the opportunity of the risk because occurrence of work accidents can be caused by various factors. PT. CA is a large distributor of motorcycle spare parts which has activities including receiving goods from fabrication and then storing them in temporary warehouses before being distributed to dealers in various regions. The company's activities have a large potential for accidents due to several operations. To hazard identification, risk assessment, and determining control in any work that occurs or has the potential to occur, it is necessary to analyze using HIRADC. The method used is a descriptive method described in the flow process and then identified possible hazards that occur in each activity step. After the identification process is complete, a risk assessment is carried out to determine the form of control. The object of research is the receiving section of the work area. The results of this study are that the receiving section has 7 existing activities and there are 20 potential hazards that are possible, from these potentials the current control is to maximize APD to minimize danger. The highest level of risk is substantial in the activity of moving cargo to temporary storage or inspection areas with a potential danger of crashing into workers which has an impact on limb injuries, fractures, and even death, so this activity is a concern to avoid work accidents. In addition, it is determined that hazard control is carried out by means of forklift lanes that are not allowed to be passed by workers and control recommendations are in the form of setting SOPs, ensuring that forklifts complete their activities to carry out inspections. Keywords: Occupational safety, potential hazard, identification, risk, control, HIRADC

RATIONAL PLACEMENT OF WAREHOUSES AT THE CONSTRUCTION SITE

Rational construction site planning is especially important when building in cramped urban environments. This requires good training of qualified professionals. Currently, the system of higher professional education imposes new requirements on the technologies of vocational training. The introduction of interactive teaching methods and the improvement of the scientific, methodological and material and technical base are the most important stages on the way to the transition to a new level of education. This process is facilitated by practical exercises using electronic reference books and electronic simulators. As an example, the organization of the interactive form of a practical lesson "Designing temporary warehouses for a construction site" is considered. The lesson is part of the course for training specialists in the development of building master plans. The structure and organization of the lesson is described. It includes such forms of interactive teaching methods as mini-lecture, case-method, discussion. During the lesson, students actively participate in the discussion of the issues under consideration. They offer their own options for solving the tasks assigned to them. Consolidation of the acquired skills for calculating warehouse areas is carried out using an electronic simulator. The simulator allows you to optimize the required warehouse area. To do this, the simulator enters the initial data on the materials required for the construction of the facility. The ability to vary various parameters is provided. The simulator makes it easier to assimilate the studied material. The proposed simulator can also be used for practical purposes, for example, for rational planning of a construction site.

Prayer paper production facility layout redesign using systematic layout planning method and CRAFT

Abstract. The facility layout is a strategic design that is used for a long time. All manufacturing industries must pay attention to the right layout to increase the productivity of the industry. A prayer paper manufacturing industry located in the Tanjung Morawa area, Medan has an error in the placement of raw materials and the placement of production machines, so that the distance from the temporary warehouse to the printing and cutting work stations is far apart, causing high material handling costs. Seeing these problems, research was carried out to improve the layout of the facilities and redesign. The method used for this research is Systematic Layout Planning (SLP), which is one of the methods used to regulate a workplace in a factory by using two areas with high frequency and logical relationships with each other. And the Computerized Relative Allocation of Facilities Technique (CRAFT) Algorithm is a repair program, which is a program that looks for optimal design by making gradual improvements to the layout. CRAFT evaluates the layout by interchanging departmental locations. Inputs required for the CRAFT algorithm include initial layout, data flow or frequency of movement, cost data per unit distance, and the number of departments that do not change or remain. The CRAFT method is usually applied using Quantitative Systems (QS) software. By comparing the layout between SLP and CRAFT, the optimal result is obtained using the SLP method by reducing the distance between departments by 1.407 meters or a distance efficiency of 39.91%.

INFLUÊNCIA DA INFRAESTRUTURA ESCOLAR NO DESEMPENHO EDUCACIONAL: ESTUDO DE CASO NA EEEFM HONÓRIO FRAGA, COLATINA/ES

Este artigo discute a influência da infraestrutura no desempenho educacional dos discentes da EEEFM Honório Fraga, em Colatina/ES, por meio de um estudo de caso. A escola passou por duas mudanças de infraestrutura, migrando, em 2010, do prédio escolar com poucas condições de infraestrutura para um galpão provisório. Dois anos depois, em 2012, a escola voltou a funcionar no prédio reconstruído. Assim, este estudo teve por objetivo verificar a influência da mudança de infraestrutura no desempenho educacional dos discentes. Para tanto, foram aplicados questionários. Houve, ainda, estudo documental e relatórios fotográficos. Sendo os referenciais teóricos: relatórios do Pisa, indicadores educacionais, Constituição Federal, Lei de Diretrizes e Bases da Educação Nacional e relatórios da Unesco.

Collection of recyclable wastes within the scope of the Zero Waste project: heterogeneous multi-vehicle routing case in Kirikkale.

There is an increase in the amount of resource use due to the rise in population, urbanization, and industrialization. Also, the amount of waste increases due to an increase in consumption and resource use. Countries are developing new policies depending on both decreasing resources and environmental problems caused by waste. The "Zero Waste" project was launched to recycle waste and to reduce environmental pollution in Turkey. The project aims to separate recyclable waste at its source and recycle them. One of the problems encountered in the implementation of the project is collecting the waste from temporary storage areas. In this study, the problem of transportation of wastes from temporary warehouses to the main warehouse was discussed in Kırıkkale/Turkey. A three-step solution approach has been proposed to the solution of the problem. In the first stage, the amounts of waste generated at the addresses to collect were estimated. In the second stage, the addresses to be visited are classified with an approach based on Pareto analysis according to the calculated waste amounts. According to this classification, it is planned which addresses will be visited on which day of the week. At the last stage, the problem is modeled as a heterogeneous multi-vehicle routing problem, which also takes into account the daily working hours and vehicle capacity constraints. According to the result of the mathematical model, the number of vehicles needed for waste collection, the types of vehicles, and the routes of the vehicles were found. Considering the implementation stages of the Zero Waste project, three different case studies are handled for Kırıkkale. These case studies have been solved by considering different waste rates. According to the results, the waste collection plan was made economically by visiting fewer spots in a week.

Integrated production, inventory, and outbound distribution operations with fixed departure times in a three-stage supply chain

This study considers an integrated production, inventory, and outbound distribution scheduling model that arises in a three-stage supply chain consisting of three parts: a supplier, a manufacturer, and several customers. The manufacturer receives a set of two-stage orders to process a specific set of jobs (products) for the customers. These jobs are first partly processed by the supplier, and delivered to the manufacturer by vehicles immediately at additional delivery costs depending on the delivered jobs. The partly processed jobs are then processed by the manufacturer, and delivered to their respective customers by transporters with fixed delivery departure times. A finished job is either kept in a temporary warehouse before it is delivered at an inventory cost, or delivered to its customer immediately. Each job is associated with a desired due date, and late deliveries are not accepted. The objective is to determine schedules for processing the jobs, and identify delivery schedules from the manufacturer to all customers such that the weighted sum of the weighted number of late jobs, inventory cost, and delivery cost is minimized. For each considered problem, we investigate its computational complexity, and develop pseudo-polynomial or polynomial-time solution algorithm, if viable. Using randomly generated data, we conduct extensive numerical studies to evaluate the performance of the proposed algorithms.

Cross-docking Centre Location in a Supply Chain Network: A Social Network Analysis Approach

The level of uncertainty, unpredictability and complexity is magnified in a food supply chain as compared to the conventional supply chains such as automobile and FMCG. This is mainly because of the short product shelf life and the need of high variety. This necessitates the food industry to adopt various quick response systems to achieve effective supply chain management. The situation becomes even more critical when dealing with humanitarian relief operations where time window is very short (usually 24 hours). One of the solutions which are adopted in modern food supply chains is to locate cross-docking centre (CDC). Cross-docking is used to reduce the turnaround time of the food products. The practical situation is complex as it caters to multiple customers. The number of suppliers, in such cases, plays a significant role. Selection of a right CDC is, therefore, a crucial task. It is a strategic decision and needs to be taken by considering the relationships between each stakeholder present in the supply chain. In this article, we present an approach to select one (or few) CDC/s facilities among n CDCs. The method is based on the relationship between each actor (actors are the stakeholders in the supply chain). The relationship is in terms of the physical flow of materials or information flow or another kind of flows or relationships that connects them to form a network. These network characteristics are required to find out key stakeholders. The present article proposes the application of social network analysis (SNA) to analyse the characteristics of the network, thus helping supply chain managers to locate strategic CDCs considering both qualitative and quantitative aspects. The proposed methodology can be easily extended to locate temporary warehouse site in the context of humanitarian relief operations.

The cost analysis of material handling in Chinese traditional praying paper production plant

Chinese traditional praying paper industry is an industry which produced Chinese traditional religion praying paper. This kind of industry is rarely examined since it was only in Small and Medium Enterprise (SME’s- form). This industry produced various kinds of Chinese traditional paper products. The purpose of this research is to increase the amount of production, reduce waiting time and moving time, and reduce material handling cost. The research was conducted at prime production activities, consists of: calculate the capacity of the material handler, the frequency of movement, cost of material handling, and total cost of material handling. This displacement condition leads to an ineffective and inefficient production process. The alternative was developed using production judgment and aisle standard. Based on the observation results, it is possible to reduce displacement in the production. Using alternative which by-passed displacement from a rolled paper in the temporary warehouse to cutting and printing workstation, it can reduce material handling cost from 2.26 million rupiahs to 2.00 million rupiahs only for each batch of production. This result leads to increasing of production quantity, reducing waiting and moving time about 10% from the current condition.

A customized genetic algorithm for solving multi-period cross-dock truck scheduling problems

Cross-docking is a logistics strategy for direct distribution of products from a supplier or manufacturing plant to a customer or retail outlet with little or no handling and storage time. The classical cross-docking models are used to find the optimal inbound/outbound truck schedule that minimizes the total operational time. We propose a new multi-period cross-docking model with multiple products, due dates, variable truck capacities, and temporary warehouse. The problem is formulated as mixed-integer programming and an evolutionary computation approach based on a genetic algorithm (GA) is designed to solve it. The structure of the chromosomes, the operators, and the constraint handling strategy are specifically designed for multi-period problems. Several test instances have been generated to compare the performance of the proposed GA with that of a branch and bound solution procedure. Moreover, a comprehensive statistical analysis is conducted to illustrate the performance efficacy of the proposed GA relative to the branch and bound algorithm. This analysis reveals that the GA provides a substantial decrease in the computational burden when compared to the branch and bound algorithm.

An Integrated Logistic Model for Predictable Disasters

In the aftermath of a disaster, the relief items are transported from temporary warehouses (Staging Areas, SAs) to the Points of Distribution (PODs). Reducing the response time to provide relief items to disaster victims and cost minimization are two important objectives of this study. We propose an integrated optimization model for simultaneously determining (1) locations of staging areas, (2) inventory assignments to these SAs, (3) selecting sizes and numbers of trucks, and (4) routing of trucks from SAs to PODs. We also introduce another variable, a value function, which forces the model to reduce the logistics response time. We study the interactions among these variables through extensive sensitivity analysis. The time horizon for supply of relief items to disaster areas is usually limited to six days after the disaster occurs. Therefore, we use the proposed optimization model in a rolling‐horizon manner, one day at a time. This reduces daily demand uncertainty. We analyze three disaster scenarios: (1) a low impact disaster, (2) a medium impact disaster, and (3) a high impact disaster. We conduct 720 experiments with different parameter values, and provide answers to the following questions that are useful for the logistic managers: (i) What are the right sizes (in terms of storage capacities) of SAs closer to the PODs? (ii) How should the budget be allocated in a disaster scenario? (iii) What mix of different types (in terms of sizes) of trucks should be selected in a given scenario? The most important managerial insights include: (i) operational budget beyond a limit does not improve the operational efficiency, (ii) when the budget is very low, it is essential to select smaller SAs close to the PODs in order to carry out operations in a feasible manner, (iii) when the impact of disaster is high, it is always beneficial to select larger SAs close to the PODs (as long as the budget is not very low), (iv) when the budget is high and the impact of disaster is not very high, the emergency management administrators need to select SAs prudently based on the tradeoff between the operational cost and the humanitarian value, and (v) the cost of operations is higher when all the trucks are of the same type compared to the case when there is a mix of different types of trucks. Also, we find that the optimal selection of SAs is not impacted by different combinations of the types of trucks. The focus of this study is on disasters that can be forecasted in advance and provide some lead time for preparations, for example, hurricanes. In order to understand the disaster management process of such disasters and develop our model, we (i) interviewed several emergency management administrators, and (ii) studied the disaster management processes available in documents released by various government agencies.

현장중심의 건설가설기술요소 분류체계 구축

Abstract : A construction temporary work is main process and importance trade section. It has many works and facilities such as temporary transfer equipments which tower crane, and lift, and architectural temporary facilities which temporary office, temporary warehouse, and site test laboratory, and construction temporary equipments which scaffoldings, work plates, construction supports, and forms to set and to use in under construction and to remove in the end. A technology system of construction temporary has very low availability of field works and needs improvements in Korea as construction site has a quick response about new requirements. This study is organized existing technology systems and new technologies for field works, and developed breakdown structure of construction temporary technologies to be a basic of temporary technologies as review with site managers. For this, it will improve to be a knowledge and information system as a research of a performance and an availability about a construction temporary technology index.