Simulation of Electric Vehicle Charging Points Based on Efficient Use of Chargers and Using Recuperated Braking Energy from Trains

Electric vehicles represent an innovation in mobility that can help significantly reduce greenhouse emissions and mitigate climate change. However, replacing internal combustion with electric vehicles is not enough. This replacement needs to be complemented with a change in the energy mix of individual countries towards renewable energy sources and efficient use of electricity generated as a secondary product. Recuperative braking energy from trains can serve as one source of such secondary energy. Following an analysis of recuperative energy generated and analysis of charging requirements of individual electric vehicles, the paper proposes a model of a charging site near train stations. Using this energy to charge electric vehicles helps to reduce energy consumption from the electricity grid and thus reduce carbon emissions. Compared to other articles, the proposed model ensures the efficient use of recuperative braking energy from trains by using the variable charging power function; thereby, the installation of additional battery storage is eliminated. Our model results show that the benefits of a car park with a reservation system near train stations increase the car park efficiency, provide a sufficient number of private charging points, contribute to efficient use of recovered energy, and reduce carbon emissions.

Evaluating the Impacts of Optimization Horizon on the Shared Autonomous Vehicle Reservation Request System

With the development of technology, shared autonomous vehicles may become one of the main traffic modes in the future. Especially, shared autonomous vehicle reservation system, commuting, and other trips with fixed departure time mostly submit their travel requests in advance. Therefore, it is important to reasonably match shared autonomous vehicles and reservation demands. In this paper, reservation requests are divided into short-term and long-term requests by inputting requests in a more realistic way. An integer linear programming model considering operator scheduling cost and system service level is established. A detailed scheme considering rolling horizon continuity and ridesharing is used to improve the dispatching result. Based on traffic data in Delft, the Netherlands, 164 scenarios are tested in which the parking cost, fuel cost, ridesharing effect, service level, and network size are analyzed. The results show that a better relocation and ridesharing matching scheme can be obtained when the rolling horizon is small, while the overall effect is better when the rolling horizon is large. Moreover, the buffer time, distance, and travel time limit for vehicle relocation should be selected according to the request quantity and the calculation time requirement. The result can provide a suggestion for the dispatching of shared autonomous vehicle reservation system with ridesharing.

The Effects of Anxiety over COVID-19 on Purchase Behaviors in Beauty Services

This study covered 219 males and females in their 20s~50s living in Seoul and Gyeonggi-do areas. SPSS v. 21.0 was used to analyze the data. The purpose of this study was to identify the effects of anxiety over COVID-19 on purchase behaviors in beauty services and the results are as follows. First, based on an analysis of the effects of anxiety over COVID-19 on abstention, there were significant positive results, meaning that more anxiety leads to more abstention. Second, based on an analysis of the effects of anxiety over COVID-19 on the preferences, there were significant positive results, meaning that more anxiety leads to more preference behaviors. Third, based on an analysis of the effects of anxiety over COVID-19 on expected behaviors, there were significant positive results, meaning that more psychological anxiety leads to more expected behaviors pertaining to beauty services. Summing up, the social anxiety over COVID-19 makes people abstain from beauty services or reduces the use. People prefer one-person shops to large franchise shops where congestion may occur. It is also assumed that psychological healing where stress and depression disappear as one uses beauty services leads to expected purchase behaviors. Considering these points, we can assume that the beauty industry should thoroughly manage disinfection and hygienic affairs and use reservation system where only a very few people can come and this will make anxiety disappear. This will remove problems of the beauty services that necessitate contacts with people and increase purchase behaviors.

PERANCANGAN SISTEM INFORMASI PENYEWAAN LAPANGAN FUTSAL BERBASIS WEB MOBILE

ABSTRACT A web-based futsal field reservation system was developed to help facilitate the process of booking or leasing a futsal field. The system uses PHP and HTML programming languages by using MySQL as data storage. The purpose of designing this system is to make it easier for users to rent futsal fields. With the futsal field reservation system is expected to facilitate in data processing, scheduling and registration of members or customers. In the end, this system is expected to help the company's performance, and can also facilitate customers in the ordering process.

Different Charging Strategies for Electric Vehicle Fleets in Urban Freight Transport

The transition from diesel-driven urban freight transport towards more electric urban freight transport turns out to be challenging in practice. A major concern for transport operators is how to find a reliable charging strategy for a larger electric vehicle fleet that provides flexibility based on different daily mission profiles within that fleet, while also minimizing costs. This contribution assesses the trade-off between a large battery pack and opportunity charging with regard to costs and operational constraints. Based on a case study with 39 electric freight vehicles that have been used by a parcel delivery company and a courier company in daily operations for over a year, various scenarios have been analyzed by means of a TCO analysis. Although a large battery allows for more flexibility in planning, opportunity charging can provide a feasible alternative, especially in the case of varying mission profiles. Additional personnel costs during opportunity charging can be avoided as much as possible by a well-integrated charging strategy, which can be realized by a reservation system that minimizes the risk of occupied charging stations and a dense network of charging stations.

Open and hidden reserves in accounting system and reporting of enterprises

Introduction. The development strategy of the firm or company must take into account various systemic and non-systemic risks and to minimize or avoid them, create the necessary financial sources in the form of reserves, collateral, insurance reserves and more. The reserve system of the enterprise provides for the official regulatory provision of funds to cover unforeseen expenses and losses, the creation of provisions for future expenses, the formation of reserves to cover doubtful and bad debts. In addition, companies can create and use hidden reserves, which are not provided by the accounting system and reporting, but play an important role in ensuring the activities of economic entities.Purpose. The main aim of the article is to analyze the structure and importance of different types of reserves and provisions, their role in stabilizing and effective activities of enterprises and corporations, determining the place of hidden reserves, providing suggestions on how to assess them.Method. The following methods are used in the research: monographic - to study the literature of the reservation system; regulatory support - to assess its availability and needs, compliance and violations; analytical - for analytical assessment of the feasibility of creating and efficient use of reserves and provisions; logical - for the purpose of legal and economic assessment of hidden reserves of enterprises and corporations.Results. An important means of protecting enterprises and corporations from systemic and non-systemic risks, including the consequences of a coronavirus pandemic, should be a rationally constructed backup system. It provides the formation of both open regulatory reserves and the search and use of hidden reserves and collateral. The interest of enterprises to increase the amount of open reserves can be achieved by reflecting in the balance sheet and other reporting of such sources in equity. In addition to the actual reserve capital created in accordance with the established standards through deductions from net income, hidden reserves and collateral must include unidentified collateral, when the time of occurrence of the relevant costs, their size, as well as the name of the creditor, or when payments for expected costs may not be known. The allocation of such reserves to equity will improve the estimated indicators of financial stability, investment attractiveness of economic entities. Among the hidden reserves should be distinguished reserves to improve the efficiency of economic activity, which are determined by the results of a detailed analysis of performance indicators. Certain resources may be released as a result of establishing an optimal accounting policy in the enterprise. Instead, it is necessary to timely identify and avoid concealment of the results of mismanagement, inaccurate presentation of information in accounting and reporting. Perspectives. Creating a reliable reserve system, its full information representation in accounting and reporting will protect companies from systemic and non-systemic risks, and the ability to objectively assess real and hidden reserves will allow real and potential investors to properly navigate in assessing the investment attractiveness of businesses.