Optimisation of land purchasing and management using mixed integer programming: a case study in a Portuguese municipal authority

This paper proposes a real time price based optimal scheduling mechanism for centralized air conditioning load. In residential context, air conditioners are the main reason for peak load in summers. The proposed mechanism aims to determine optimal operation of air conditioner such that it results in reduction in consumer's electricity bills. Mixed Integer Programming technique is used for obtaining optimal schedule. The results obtained are compared with a previously established Linear Sequential Algorithm for evaluating the effectiveness of the scheme. The results show that Mixed Integer Programming technique provides higher reduction in electricity bill as compared to Linear Sequential technique.

The article is devoted to the study of changes in geodesy, land management, State land cadastre and urban planning. It is proved that changes in certain areas are related to changes in the main directions of land reform in Ukraine, namely the formation of territorial communities and the introduction of a full and open land market. The process of formation of communal property in Ukraine and formation of territorial communities are investigated. At the same time, a special type of documentation appears – a comprehensive plan of spatial development of territorial communities, which is both land management documentation and urban planning documentation at the local level and includes topographic and geodetic data. To determine the boundaries of the territory of the community, a new type of land management documentation was introduced – a land management project to establish the boundaries of the territory of the territorial community. It is established that the number and area of territorial communities are different and can differ dozens of times. It is determined that the issue of creating geospatial data infrastructure is becoming more and more developed in Ukraine, because it combines data from the State Geodetic Network, information from the State Land and Urban Cadastre, which provides additional amplification and data entry, development of documentation using its current data. The issue of land market regulation is considered. Its subjects and features of acquisition of the property right to land plots of agricultural purpose are defined. The maximum size of the total area of agricultural land plots is presented – no more than ten thousand hectares, but until January 1, 2024 for the citizens of Ukraine this value should not exceed 100 hectares. The tendency of changes in establishing the sale price of the land plot, namely in carrying out the normative monetary assessment is determined. It is proposed to create a single assessment procedure for all land plots, regardless of their purpose, but taking into account the boundaries of the territorial community. The average cost of agricultural land by regions of Ukraine is analyzed. It is determined that it is uneven and can differ by 2-2.5 times. It is established that the introduction of real-time electronic auctions for the purchase and sale of agricultural land of all forms of ownership allows to achieve openness and transparency of the land market, as well as attracting a wider range of potential buyers.

We provide the methods for searching for the unique Nash equilibrium using mixed integer programming techniques. We also simulate the model parameters using this technique and derive the numerical solution to show the characteristics of a key player providing both public goods as suggested by Bergstrom et al. (1986). We present two key results. First, when the number of players decreases, the appearance rate of the unique equilibrium accompanying a key player increases. Second, when the variance of the preference or price parameters decreases, the appearance rate of the unique equilibrium accompanying a key player increases.

The sugarcane transport system is very complex and uses a daily schedule, consisting of a set of locomotives runs, to satisfy the requirements of the mill and harvesters. The total cost of sugarcane transport operations is very high; over 35% of the total cost of sugarcane production in Australia is incurred in cane transport. Producing efficient schedules for sugarcane transport can reduce the cost and limit the negative effects that this system can have on the raw sugar production system. In this paper, the sugarcane rail operations are formulated as a blocking job shop scheduling problem. A mixed integer programming approach is used to formulate the shop job scheduling problem. Mixed integer programming and constraint programming search techniques are integrated for solving the problem. A case study is solved to test the approach.

This article presents an overview and a flavour of almost two decades of MARKAL model developments and selected applications. The MARKAL family of models has been contributing to energy/environmental planning since the early J980’s. Under the auspices of the International Energy Agency’s (IEA) Energy Technology Systems Analysis Programme (ETSAP) the model started as a linear programming (LP) application focused strictly on the integrated assessment of energy systems. It was followed by a non-linear programming (NLP) formulation which combines the ‘bottom-up’ technology model with a ‘top-down’ simplified macro-economic model. In recent years, the family was enlarged by members to model material flows, to employ stochastic programming (SP) to address future uncertainties, to model endogenous technology learning using mixed integer programming (MIP) techniques, and to model multiple regions (NLP/LP).

The solution of chance constrained optimization problems by means of empirical approximation of the underlying multivariate distribution has recently become a popular alternative to conventional methods due to the efficient application of appropriate mixed integer programming techniques. As the complexity of required computations depends on the sample size used for approximation, exponential estimates for the precision of optimal solutions or optimal values have become a key argument for controlling the sample size. However, these exponential estimates may involve unknown constants such that the required sample size to approximate the solution of a problem may become arbitrarily large. We will illustrate this effect for Gaussian distributions.Keywordschance constrained programmingprobabilistic constraintsempirical approximationsample average approximationconvergence of solution setssample size

Today's enterprises face the challenge of managing large, complex information technology (IT) systems consisting of software applications, servers, network routers, and other type of resources. Change management, and especially change scheduling, is known to be one of the most challenging problems in managing IT operations. Change scheduling must comply with strict availability Service Level Agreements (SLAs) and tackle complex IT environments. Various challenges arise from complex IT component dependencies, unpredictable durations of work processes, and large volume of concurrent changes and affected IT components. In this chapter, we address the problem of optimal IT change scheduling. We illustrate how the optimization problem can be formulated and solved using a mixed integer programming technique so that IT change management practitioners can efficiently schedule large change volumes and determine schedules that are robust to uncertainty in durations and costs with lower risks of SLA violations.

Mixed-integer nonlinear programming techniques for process systems engineering

A comparative analysis of linear fitting for non-linear functions on optimization: A case study: Air pollution problems

A re-entrant shop describes a manufacturing environment in which a machine can process a job more than once. A re-entrant shop can be classified into a re-entrant job-shop (RJS) and a re-entrant flow-shop (RFS). This article presents the development of the mixed binary integer programming (BIP) technique for the RJS and the RFS scheduling problems. Eight mixed BIP models are proposed for solving re-entrant shop scheduling problems to minimize makespan. The models RJS-1, RJS-2, RJS-3, and RJS-4 are for the RJS problems, while the other four models (RFS-1, RFS-2, RFS-3, and RFS-4) are for the RFS problems. Computational results show that the RJS-4 model is the best of the RJS models, and the RFS-3 model is the best of the RFS models.

In a recent paper by Prodan et al. (J. Optim. Theory Appl. 154:549---572, 2012), a technique was presented to reduce the number of binary variables needed to represent not convex constraints in a mixed-integer programming (MIP) problem. The proposed technique employs tuples of binary variables, which are associated with feasible regions of the feature space. However, since the number of all possible tuples with a given number of bits is a power of two, there may be several unallocated tuples that must be rendered infeasible by imposing suitable constraints. We show in this paper that it is always possible to partition the tuples so that only one inequality is necessary to render all the unallocated tuples and only them infeasible. Moreover, we develop a systematic procedure to perform this partition and write the referred inequality.

Notary is authorized to authorize the letter under hand (legalization). The legalization process is a letter made under the hand signed by the parties before the Notary and the notary register the deed into a special book, for example a binding sale and purchase agreement. The author is interested in discuss1) What is behind the occurrence of the case Decision Number 54 /Pdt.G/2014/PN.Pdg? 2)How the judge's consideration of the sale and purchase agreement binding made and approved by the notary in the case Decision Number 54 /Pdt.G/2014 /PN.Pdg? The research method used is the method of juridical normative empirical approach. The result of the research 1) The background of the occurrence of the Decision Number 54 /Pdt.G/2014/PN.Pdg is that Defendant I did not carry out the payment of the Plaintiff's land sale and purchase of the above land, both the second term and the third termin payment, causing such a large loss Plaintiffs, such losses include the Plaintiff can not utilize the land sale money optimally, the Plaintiff has sought constantly to pursue the path of peace to find a way of settlement but Defendant I always tried to dodge so as not to meet common ground, 2) Judge's consideration of the binding agreement Sale and purchase made and approved by a notary in the case of Decision Number 54 /Pdt.G/2014/PN.Pdg is the object of PPJB is a plot of land that has been certified shall be held a local examination by the Assembly, the TRTB Service does not issue permits for the location of housing on land SHM .No.4065 / Balai Gadang with the reason that evidently the land is located just above the ground which is the plan of the road or in the area of the eastern ring road of the city of Padang. This is contrary to the IPPT issued by the Land Office of Padang City and the Sale and Purchase of Land of SHM.No.4065 / Balai Gadang has been declared void in accordance with the provisions of Article 5 of the Agreement dated September 13, 2013, that both parties agree to the costs incurred in The process of reversing the name of the land certificate either on a Notary which makes the deed or administrative process in the Land Affairs office of Padang city. Therefore, please punish the plaintiff for reconstruction and defendant to pay as much (50% each) the costs incurred in the process behind the name SHM.No.4065 / Balai Gadang.

Mixed-integer programming and multi-objective optimization techniques for the design of control augmented structures

The Bojonegoro Traffic Information Center (Bojonegoro TIC) application is an innovative application managed by the Transportation Agency to facilitate the process of providing public information services in the field of traffic. The government is expected to be able to implement dynamic governance, by the times but not ignoring the needs of the community. Focusing on a case study where the Bojonegoro Traffic Information Center application has been launched since 2018 and has undergone three stages of renewal, but the people of Bojonegoro city still do not know the existence of the Bojonegoro Traffic Information Center application in providing public information services. There are still several obstacles such as in 2022 the weakness of CCTV real-time data that cannot function for almost a year, there are still many people who are in remote areas, and also people who are old are not accustomed to using cellphones as a source of public information services, they think that cellphones are only limited to communication tools. This study aims to determine the dynamic governance of service delivery through the Bojonegoro Traffic Information Center application according to Neo & Chen 2007, where there are three dynamic governance capabilities: Thinking Ahead, Thinking Again, and Thinking Across. The results of the study have thought ahead by preparing public services through one service application and creating innovations to bring services closer to the community, but also have thought again by conducting regular evaluations and thinking across borders by adopting thoughts from other regions by implementing directly on the application so that it can support public services to the community.

The article formulates the problematic issues of determining the purchase price of land plots that are subject to alienation for public needs or for reasons of public necessity in Ukraine. It is possible to single out the main problems of a legal nature – the Law provides for two types of value that must be determined during the procedure of redemption for public needs: estimated purchase price and purchase price. The following stages of the procedure for the purchase of a plot of land for public needs in Ukraine are distinguished: planning and decision-making, notification of all interested parties, assessment and negotiations regarding compensation, purchase and sale agreement and payment of compensation, entry into ownership, return. The issues of buying or exchanging land plots from owners for public needs have always been problematic and conflictual. it was established that the legislation of Ukraine meets the international requirements for the regulation of relations in the field of forced purchase of land for public purposes, but it does not regulate: the type of value and methods of assessment of land plots (parts of them); calculation of damages related to environmental degradation and standard allowance. An expert study was conducted to determine the type of cost and compensation in case of forced expropriation, approaches to calculating possible damages. The total number of experts participating in the survey was 75. Estimated average work experience for experts is 10 years. The interviewees' awareness of the questions was conditionally considered equal. 97% of the respondents noted that there should be additional compensation and reimbursement for losses to the owners of real estate (except land plots) in case of redemption for public needs. Experts determined that additional compensation and compensation for losses to land plot owners should be within 30-50% of the value of the land plot and real estate objects located on it. Taking into account the expert opinion, the structure of damages is proposed, which should be included in the purchase price, which includes: costs of moving, preparation of documents, costs of arranging a new home, compensation for taxes and fees during the purchase of an alternative object of real estate, the cost of fruit and berries plantations and crops. Keywords: purchase price, alienation, type of value, land plot, valuation method.