On Engineering Assets and Technology Supply Capacity

2014 ◽  
pp. 33-42
Author(s):  
Joe Amadi-Echendu ◽  
Nomsesi Martha Mhlanga
Keyword(s):  
Supply Capacity

Dynamic pricing and lot sizing for a newsvendor problem with supplier selection, quantity discounts, and limited supply capacity

2021 ◽  
Vol 154 ◽  
pp. 107113
Author(s):  
Omid Jadidi ◽  
Mohamad Y. Jaber ◽  
Saeed Zolfaghri ◽  
Roberto Pinto ◽  
Fatemeh Firouzi
Keyword(s):  
Dynamic Pricing ◽  
Supplier Selection ◽  
Lot Sizing ◽  
Newsvendor Problem ◽  
Quantity Discounts ◽  
Limited Supply ◽  
Supply Capacity

scholarly journals Reassessing Existing Reservoir Supply Capacity and Management Resilience under Climate Change and Sediment Deposition

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1819
Author(s):  
Eleni S. Bekri ◽  
Polychronis Economou ◽  
Panayotis C. Yannopoulos ◽  
Alexander C. Demetracopoulos
Keyword(s):  
Climate Change ◽  
Climate Models ◽  
Global Climate ◽  
Vital Role ◽  
Sediment Deposition ◽  
Global Climate Models ◽  
Exceedance Probability ◽  
Climate Change Effects ◽  
Management Scenario ◽  
Supply Capacity

Freshwater resources are limited and seasonally and spatially unevenly distributed. Thus, in water resources management plans, storage reservoirs play a vital role in safeguarding drinking, irrigation, hydropower and livestock water supply. In the last decades, the dams’ negative effects, such as fragmentation of water flow and sediment transport, are considered in decision-making, for achieving an optimal balance between human needs and healthy riverine and coastal ecosystems. Currently, operation of existing reservoirs is challenged by increasing water demand, climate change effects and active storage reduction due to sediment deposition, jeopardizing their supply capacity. This paper proposes a methodological framework to reassess supply capacity and management resilience for an existing reservoir under these challenges. Future projections are derived by plausible climate scenarios and global climate models and by stochastic simulation of historic data. An alternative basic reservoir management scenario with a very low exceedance probability is derived. Excess water volumes are investigated under a probabilistic prism for enabling multiple-purpose water demands. Finally, this method is showcased to the Ladhon Reservoir (Greece). The probable total benefit from water allocated to the various water uses is estimated to assist decision makers in examining the tradeoffs between the probable additional benefit and risk of exceedance.

The Loss-Averse Newsvendor Problem with Random Supply Capacity and Reference Point

2021 ◽  
Author(s):  
Wei Liu ◽  
Han Zhao ◽  
Shiji Song ◽  
Huachang Wang
Keyword(s):  
Reference Point ◽  
Newsvendor Problem ◽  
Supply Capacity

Monthly Supply Capacity of Provincial Power Grids under Market Environment

2021 ◽  
Author(s):  
X. Jia ◽  
X. Wang ◽  
H. Zhong ◽  
J. Yao ◽  
X. Wang ◽  
...  
Keyword(s):  
Power Grids ◽  
Market Environment ◽  
Supply Capacity

scholarly journals Development of a management tool for reservoirs in Mediterranean environments based on uncertainty analysis

2012 ◽  
Vol 12 (5) ◽  
pp. 1789-1797 ◽  
Author(s):  
R. Gómez-Beas ◽  
A. Moñino ◽  
M. J. Polo
Keyword(s):  
Uncertainty Analysis ◽  
Water Cycle ◽  
Integrated Management ◽  
Management Tool ◽  
Short Term ◽  
Climate Fluctuations ◽  
The Social ◽  
Reservoir Watershed ◽  
Supply Capacity

Abstract. In compliance with the development of the Water Framework Directive, there is a need for an integrated management of water resources, which involves the elaboration of reservoir management models. These models should include the operational and technical aspects which allow us to forecast an optimal management in the short term, besides the factors that may affect the volume of water stored in the medium and long term. The climate fluctuations of the water cycle that affect the reservoir watershed should be considered, as well as the social and economic aspects of the area. This paper shows the development of a management model for Rules reservoir (southern Spain), through which the water supply is regulated based on set criteria, in a sustainable way with existing commitments downstream, with the supply capacity being well established depending on demand, and the probability of failure when the operating requirements are not fulfilled. The results obtained allowed us: to find out the reservoir response at different time scales, to introduce an uncertainty analysis and to demonstrate the potential of the methodology proposed here as a tool for decision making.

scholarly journals The effect of various composts on vegetable green mass on two soil types

2017 ◽  
pp. 179-183
Author(s):  
Judit Szűcsné Szolomájer ◽  
Marianna Makádi ◽  
Ibolya Demeter ◽  
Attila Tomócsik ◽  
Tibor Aranyos ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Organic Matter Content ◽  
Chemical Properties ◽  
Nutrient Content ◽  
Biological Properties ◽  
Matter Content ◽  
Soil Types ◽  
Test Plant ◽  
Positive Effects ◽  
Supply Capacity

Composting of sewage sludges makes easier the utilization of sewage sludge in the agriculture and the composts in good quality could increase the nutrient content of soil. Due to the composting process, the sewage sludge composts with high organic matter content can be utilized in the same way as other composts or farmyard manure.Composts produced in different ways have different effects on the physical, chemical and biological properties of different soils, although their positive effects have already proved in the literature. In our study the effects of composts from different composting processes were investigated in soil-plant systems. The different physical and chemical properties of the two examined soil types (arenosol and chernozem)strongly influenced the nutrient supply capacity of composts which could be characterized by the growth of ray-grass as a test plant in the pot experiment. In this work we examined the effects of three different composts on the green weight of plants on the fourth and eighth weeks after the treatment and sowing.

scholarly journals PENGENDALIAN ALIH FUNGSI LAHAN SAWAH YANG BERKELANJUTAN DI KECAMATAN TAMBANG, KABUPATEN KAMPAR, RIAU The Sustainability Of Control Over The Paddy Fields Converstion In Tambang Sub-District, Kampar Regency, Riau

2021 ◽  
Vol 15 (2) ◽  
pp. 152
Author(s):  
Chendy Prima Sari ◽  
Zulfan Saam ◽  
Ridwan Manda Putra
Keyword(s):  
Two Dimensions ◽  
Social Dimension ◽  
Paddy Fields ◽  
Survey Method ◽  
Literature Study ◽  
Economic Dimension ◽  
Sustainability Index ◽  
The Status ◽  
Supply Capacity ◽  
Index Value

The phenomenon of paddy fields conversion in Kampar Regency which continues to increase from year to year had caused decreasing paddy fields area and threatening food supply capacity. The purpose of this study was to analyze the index and the status of the sustainability of control over the paddy fields conversion and to find out the sensitive attributes of the sustainability of control over the paddy fields conversion in Tambang Sub-District, Kampar Regency. This research was conducted in Aur Sati Village, Balam Jaya Village and Pulau Permai Village, Tambang Sub-District, Kampar Regency from October 2020 to January 2021. The method used was the survey method with a quantitative approach. The sampel of farmers in this study were 88 people who were selected by purposive sampling. Data collection was done by observation, interviews, and literature study. This study used questionnaires as an instrument to collect data.  The analytical method used in this research was the sustainability analysis carried out with the Multi-Dimensional Scaling (MDS) analysis approach with the Rap-Paddy Field tool which has been modified from Rapfish program. The results showed that the control of the paddy fields conversion in Aur Sati Village has been going very well, this can be seen from the sustainability index value of each dimension in the range of 52.4 - 83.9% (fairly - highly sustainable). On the other hand, the sustainability index value of each dimension in Balam Jaya Village ranges from 35.9 - 48.2% (less sustainable), this showed that paddy fields conversion in this village has not been well controlled. While in Pulau Permai Village, the economic dimension had a sustainability index value of 48.2% (less sustainable) and there were 2 (two) dimensions that were classified as fairly sustainable, namely the ecological dimension of 64.4% and the social dimension of 52.3%. These data provided information that the control of paddy fields conversion in Pulau Permai Village is still ecologically and socially oriented, and ignores the economic dimension. There were sensitive attributes that need to be given top priority in planning the sustainability of control over the paddy fields conversion in Tambang Sub-District, Kampar Regency, namely price stability, product markets, traditional leaders, cultivation techniques and availability of RTRW.

scholarly journals Smart Grid Nontechnical Loss Detection Based on Power Gateway Consortium Blockchain

2021 ◽  
Vol 2021 ◽  
pp. 1-20
Author(s):  
Xudong He ◽  
Jian Wang ◽  
Jiqiang Liu ◽  
Enze Yuan ◽  
Kailun Wang ◽  
...  
Keyword(s):  
Smart Grid ◽  
Power Supply ◽  
Rapid Development ◽  
Good Effect ◽  
Smart Meter ◽  
Human Beings ◽  
Labor Costs ◽  
Time Consumption ◽  
Decentralized Management ◽  
Supply Capacity

The rapid development of the smart grid brings convenience to human beings. It enables users to know the real-time power supply capacity, the power quality, and the electricity price fluctuation of the grid. However, there are still some threats in the smart grid, which increase all kinds of expenses in the grid and cause great trouble to energy distribution. Among them, the man-made nontechnical loss (NTL) problem is particularly prominent. Recently, there are also some NTL detection programs. However, most of the schemes need huge amounts of supporting data and high labor costs. As a result, the NTL problem has not been well solved. In order to better avoid these risks, problems such as tampering of smart meter energy data, bypassing the smart meter directly connected to the grid, and imbalance between revenue and expenditure of the smart grid are tackled, and the threat scene of NTL is constructed. A hierarchical grid gateway blockchain is proposed and designed, and a new decentralized management MDMS system is constructed. The intelligent contract combined with the elliptic curve encryption technology is used to detect the storage and the acquisition of power data, and the detection of NTL problems is realized. At the same time, it has a certain ability to resist attacks such as replay, monitoring, and tampering. We tested the time consumption and throughput of this method on Hyperledger Fabric. At the same time, eight indexes of other methods proposed in the literature are compared. This method has a good effect.

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