Flow Management System Research Articles

Downhole flow control: A key for developing enhanced geothermal systems in horizontal wells

Field evidence indicates that only a few large fractures in enhanced geothermal systems (EGS) may dominate fluid flow and lead to the development of thermal short-circuiting. This problem would worsen in heat harvesting through horizontal wells with abundant fractures (induced or natural ones). To limit flow shortcuts that may cause early thermal breakthroughs, we propose a temperature-sensitive flow management system and explore its potential benefits during the development of EGS in horizontal wells. The proposed downhole flow management system consists of sensors for real-time temperature monitoring, and flow control devices for adjusting injection distribution in the wellbore. We evaluate the performance of such systems over 50 years of operation by numerical analysis. The results indicate that, when the proposed system is utilized, the produced fluid temperature will be increased by up to 60 K for a field-scale example. Besides, the application of the proposed flow management system can increase the cumulative heat extraction by up to 48.25 % (0.69 × 1016 J) after 50 years. The heat extraction efficiency can be improved by up to 94.16 %. During the EGS operation, it is suggested to implement multi-stage fluid control, but it is not recommended to reopen the fluid injection that has been previously shut down. Finally, the flow management system can mitigate the negative impacts of geological heterogeneities or the heterogeneity in fracture hydraulic conductivities. This paper proposes a new concept of flow management to integrate horizontal wells into efficient EGSs for power generation and heat extraction in the future.

Utility of the admission/discharge patient flow management system at the acute care hospital

Utility of the admission/discharge patient flow management system at the acute care hospital

METHODOLOGY OF CHANGE MANAGEMENT IN THE IMPLEMENTATION OF AUTOMATED TREASURY SYSTEMS

The relevance of the chosen topic arises from the growing need to explore the automation of treasury systems in enterprises, given the rapidly changing external and internal environments of companies. This study investigates both the theoretical and practical aspects of automation, focusing on how new systems can adapt flexibly to these dynamic conditions. The research is rooted in a detailed examination of methodologies for change management during the implementation of automated treasury systems, ensuring that such transitions align with broader business strategies. The study’s methodology includes a thorough analysis of existing theoretical frameworks in the field of cash flow system automation, particularly in treasury management. Additionally, it draws on practical experiences from companies such as Severstal, JSC USC, and SMART-HOLDING, which have implemented systems like 1C, Finance 360°, and the integrated "Treasury" project. These cases provide valuable insights into the challenges and effective solutions for developing efficient cash flow management systems. The findings demonstrate that automated treasury systems are crucial for companies to manage their cash flows effectively. They enable firms to maintain control over key economic indicators while providing the flexibility needed to respond to fluctuating external and internal factors. Through the use of sophisticated methodological tools, these systems support strategic financial management and help companies stay competitive in a fast-paced environment. The conclusions of this study are highly relevant for students and professionals engaged in the study or practice of cash flow management and treasury operations in various organizational settings. The insights offered emphasize the importance of a well-implemented treasury automation system in ensuring financial stability and achieving long-term business success. Furthermore, the study presents practical recommendations for effectively implementing and adapting these systems to meet the evolving demands of the global business landscape.

JUDICIAL CASE FLOW MANAGEMENT “CHECKPOINT”: HOW FAR HAVE WE GONE?

This article examines the introduction of judicial case flow management into South African law from a historical perspective, its initial failures, resistance and fundamental principles. It sets out the judicial attempts to regulate the management of litigious matters through the Uniform Rules of Court, particularly rule 37A, and the impact of the introduction of the era of norms and standards on case flow management. Through revelations in practice of the positive progress achieved in judicial case flow management, the central argument is that a more inquisitorial role in the case flow management system is key to ensuring access to justice.

Modeling and control of a new multi-port converter for hybrid energy system integration

This research introduces a new topology called the quasi-Z-source integrated isolated multiport bidirectional resonant DC-DC converter. The aim is to achieve cost-effective and efficient multi-directional power flow between photovoltaic (PV), battery/supercapacitor, and DC loads. The proposed topology ensures uninterrupted power supply to the loads and supports reverse power transfer through its bidirectional power flow capability. By combining quasi z-source and H-bridge resonant converters with an existing switch, a four-port converter is achieved without the need for separate converters or additional switches. The high-gain quasi z-source converter reduces the required voltage ratings of the battery and supercapacitor packs while enabling the utilization of a high-frequency transformer (HFT) with a low turns ratio. Isolation between the ports is achieved using a secondary center-tapped HFT equipped with a controlled full-wave rectifier on the secondary side, allowing bidirectional power flow. A power flow management system and corresponding control scheme are proposed to optimize the system's performance. The proposed system's performance is evaluated under various operating conditions, demonstrating its effectiveness in power flow management and overall efficiency. The results confirm the feasibility and effectiveness of the proposed system.

Popular logistics for collective unpredictabilities in pandemic Madrid

This article develops the concept of collective unpredictability as a socio-geographic gathering and sensibility for redescribing territories of urban habitation. It describes in detail the databases, privacy protocols, call centres, inventory and queue flow management systems, spatial surveys, food supply chains, transport operations, credit and voucher economies, and financial accounting systems designed by community organizations during the COVID-19 pandemic across six neighbourhoods in Madrid. It demonstrates how these various systems of attention, logistical geographies and ecologies of habitation threw into question the ceteris paribus assumptions underpinning the geographical epistemologies of biopolitical models. The emphasis on collective unpredictabilities aims not to confront expert factuals against community counterfactuals, but to insist on the urban liveliness of otherwisefactuals.

Integrated Control and Energy Flow Management for Hybrid Grid-Connected Photovoltaic/Wind Systems with Battery Storage Using Fuzzy Logic Controllers

This paper focuses on the control and management of an energy conversion system within a microgrid setup comprising multiple renewable energy sources and a storage system, all connected to the AC-grid through DC/DC, AC/DC, and DC/AC converters. Various control objectives are defined, which depend on factors such as energy availability, load demand, storage system state of charge, and grid availability. To address these scenarios, an energy flow management system is developed in this work. The primary roles of this management algorithm include ensuring the safety of all microgrid components, enhancing the storage system’s lifespan, and improving energy efficiency. To achieve these objectives, multiple control loops are designed based on fuzzy logic controllers ensuring appropriate system operation modes. The effectiveness of this control and energy management strategy is evaluated using the MATLAB/Simulink/Simpower environment, demonstrating its capability to meet the specified objectives.

ІНФОРМАЦІЙНО-АНАЛІТИЧНЕ ЗАБЕЗПЕЧЕННЯ УПРАВЛІННЯ ГРОШОВИМИ ПОТОКАМИ ПІДПРИЄМСТВА

The purpose of the article is to consider the information and analytical support of the cash flows management at the enterprises. It is necessary to investigate the theoretical aspects of the information and analytical support of the cash flows management, taking into account the current conditions of the enterprises. The object of the research is the information and analytical support of the cash flows management at the enterprises. The methods of cognition, synthesis, generalization, systematization, visual methods are used. The concept of "information flow" is considered, which can be considered in three aspects: syntactic, semantic, and pragmatic. The term "information and analytical support" is disclosed from the point of view of scientific concepts of various researchers. It is determined the components of the information and analytical support of the cash flow management. These components include: information, analytical, software and technological support. The sources of the information component of the information and analytical support of the enterprise's cash flow management are determined. It has been proven that the quantity and quality of information determines the effectiveness of the entire management system of the enterprise as a whole and cash flow management, in particular. A systematization of stakeholders interested in receiving data on the company's cash flows is provided. Thus, a component of the cash flow management system is information and analytical support, the main components of which are informational, analytical, software and technological components. To carry out an effective analysis of cash flows, it is necessary to create an information base that includes external and internal information. When studying internal information, it is divided into accounting and non-accounting. The results of the study showed that the need of stakeholders for information about the state of cash flows of financial statements is growing every year, therefore it is important to provide stakeholders with reliable information. The expediency of distinguishing two groups of information users: external and internal has been established. The practical value of the conducted research lies in the further use of information and analytical support in the company's activities.

Airspace Congestion, flow Relations, and 4-D fundamental Diagrams for advanced urban air mobility

This paper develops theoretical macroscopic air traffic flow models that relate vehicle density and spacing to traffic flow (throughput) measures under different operational parameters for unstructured airspace in the Advanced Air Mobility (AAM) context. Recognizing the role of conflicts in air traffic flow, we relate vehicle density to the frequency of conflict occurrence in airspace using a gas-kinetic analogy. The number of conflicts is then related to vehicle speeds using an average speed loss per conflict. The effects of the speed reductions are coupled with density to explore the fundamental diagram between flow rate and density. The theoretical models are tested and validated with simulated results for a number of parameter levels. The models can be applied for quick predictions of future traffic flow conditions, which will be especially useful for operators or air traffic flow management systems. The theoretical and simulated findings also provide operational and policy insights for AAM operators, planners, and modelers. Notable insights include the critical role of aircraft density in air traffic flow and the variable impact of that density on traffic flow behavior. AAM operators and planners will need to closely manage the airspace density to avoid large numbers of conflicts simultaneously and maintain acceptable travel times and throughputs. Key operational parameters such as aircraft spacing requirements and maximum aircraft speeds were also found to have significant impacts on traffic flow behavior, and offer policy avenues for managing air traffic.

Assessment of the effectiveness of measures to improve the patient routing system in the provision of planned medical care (experience of Tomsk region)

Introduction. This article reviews the results of the development and implementation of organizational solutions aimed at reducing the time of providing routine medical care to patients in outpatient settings and increasing its availability. Among the reasons negatively affecting the waiting times for medical care are complex routing schemes and the high level of administrative overhead that accompanies each stage of the treatment and diagnostic process.Aim: To develop and evaluate the effectiveness of measures to improve the system of organization of planned medical care on the example of medical organizations of Tomsk region.Material and Methods. The study included medical organizations providing primary health care in outpatient settings (31 institutions). The study was conducted in stages: 2018–2019 the main set of measures (creation of offices of the organization of planned care) was developed and implemented, 2020–2021 – summarized interim results, 2022 – performance assessment was carried out. For comparative analysis all medical organizations were divided into 2 groups (group A and group B) depending on implementation of planned activities. Statistical processing was performed using the Statistica 10.0.228.8 software package.Results. It was found that the waiting time for a doctor’s consultation Group A reduced by 5.5% (p = 0.025) in 2019 compared with 2018, in contrast to Group B. The waiting time for a routine diagnostic examination in Group A also reduced by 16.6% in 2019 compared to 2018 (p = 0.041), while no differences were found between waiting times for routine diagnosis in Group B for the same period (p = 0.101).Summary. The study has shown that the problems of accessibility of planned medical care can be effectively solved through the creation of a patient flow management system at all stages of the treatment and diagnostic process.

Optimizing Sugar Manufacturing: A Hybrid Simulation-Based Approach and MCDM for Efficient Decision Making

Efficient truck flow is essential for the efficient operation of a factory and the distribution of its products. This study demonstrated methods to improve truck loading times and overall efficiency at a major sugar manufacturing facility in the Middle East. The objective was to reduce truck waiting times at loading units and increase capacity. The data were collected through questionnaires, observations, and interviews with stakeholders. A simulation software was employed to analyze truck activity at loading stations at the factory. Multi-criteria decision making (MCDM) tools, AHP and TOPSIS, addressed five primary criteria and nine sub-criteria to assist in identifying, evaluating, and ranking feasible solutions. The study suggested different utilization of the various factory loading platforms at different times of the day. The findings from this study emphasize the importance of simulation-based approaches supplemented with decision-making processes to improve efficiency in sugar manufacturing facilities that may have broader applications in the factories of other industries. The study highlights remarkable improvements in operational efficiency, as seen in Alternative 4 substantial 27.9% enhancement, resulting in cost savings and time efficiency. By implementing these findings, factories can enhance their truck flow management system, reduce waiting times, increase capacity utilization, optimize resource allocation, and improve overall efficiency.

Intelligent road transport flow management system: Basic ontology concepts

Intelligent road transport flow management system: Basic ontology concepts

VALUE-ORIENTED FACTORS IN THE MANAGEMENT OF ECONOMIC SECURITY OF ENTERPRISES OF NETWORK STRUCTURES

This article proposes a mechanism for managing the economic security of enterprises of network structures, defines the main functional goals of this security, and outlines the list of external and internal factors that affect it. Strategic development is highlighted as preventive management of economic security of network structures. Modern aspects of the formation of approaches to value-oriented financial management of enterprises of network structures are outlined, and the need to transform management approaches to finance in the context of a new paradigm of financial management is determined.It is proven that the introduction of modern technologies into the management system of enterprises of network structures, within the framework of the global development of the digital economy, requires a rethinking of the financial flow management system in business processes aimed at assessing the value of business in the overall financial management system.The effectiveness of the influence of modern concepts of value-oriented management on the profitability of the enterprises of network structures during their activity is determined. An analysis of the components of the process of value-oriented management, components and principles was carried out, and modern features of adaptation of these elements to the processes of managing financial flows of enterprises of network structures were determined.

Modeling of management decisions in the investment flow management system at an innovation–oriented enterprise in conditions of increased competition

Modeling of management decisions in the investment flow management system at an innovation–oriented enterprise in conditions of increased competition

ЦИФРОВІ ТРАНСФОРМАЦІЇ ТА УПРАВЛІННЯ ЛОГІСТИЧНИМИ ПОТОКАМИ ВПК

The article defines the expediency of digital transformations in the management of logistics flows of the military-industrial complex in the conditions of global digital transformation of the economy and hostilities in Ukraine. The issues of introducing modern digital technologies, tools and a proactive strategy in the logistics sector of the military-industrial complex are considered, taking into account the flexibility of certain aspects of logistics activities, which will improve the digital logistics system in the Armed Forces of Ukraine. The essence of military logistics, digitization in logistics and digital technologies used in digital transformation are revealed. The article presents the main directions of the digitalization process for managing the logistics flows of the military-industrial complex to solve problems related to providing military units with the necessary supplies, obtaining military equipment, humanitarian and financial assistance. It has been determined what the need for digitalization of the transport infrastructure and logistics chains of the military-industrial complex in the conditions of hostilities and constantly changing conditions. A model for managing logistics flows of the military-industrial complex using digital technologies has been developed, connecting all transport and logistics processes and reflecting integrated digital solutions in the logistics of the military-industrial complex. The main tasks of the virtuality of the interaction of transport logistics routes of the Armed Forces of Ukraine are determined. It is noted that digital transformations in the management of logistics flows of the military-industrial complex depend on the effective and organized operation of control subsystems and the virtualization of the interaction environment, which is provided through the use of the global telecommunications environment. The main functions of the logistics flow management system of the military-industrial complex are presented. The specifics of the requirements for the processes of managing the integrated logistics flows of the provision of military units in modern realities are analyzed.

Development of corporate treasury operations in russian leasing companies

In the context of the digital economy small Russian companies with several settlement accounts, minimal currency risks, and the absence of the need to control credit resources and investments, practically do not create an autonomous treasury department. Treasury functions are performed by an accountant and are controlled and managed by a chief financial officer. With the expansion of the company’s activities, in order to create a unified strategy for the policy in the field of cash flow control and the development of financial risk management procedures, a centralized treasury is formed. According to research by the largest international audit companies, due to the strengthening of strategic emphasis in cash management, the role, degree of centralization, and importance of corporate treasury in Russian financial management have been growing significantly over the past 10 years. The study examines the development of the corporate treasury in leasing companies in Russia; the authors propose several ways of managing corporate treasury operations in leasing companies, in particular, development and application of a cash flow management system, and outline a methodology of separate accounting of the results of corporate treasury activities. It is concluded that the use of information support, based on big data analysis and machine learning, contributing to the consolidation of all the company’s cash flows in a single database, is required. In this regard, the results obtained can be useful to organizations that use corporate treasury in their activities.

Remotely piloted aircraft system flight-plan processing from a risk-based methodology

The integration of Remotely Piloted Aircraft System (RPAS) in non-segregated airspace is one of the most demanding challenges that the aviation community must face in the years ahead. This article develops the flight-plan processing from a risk-based methodology. The risk-based methodology is underpinned by an in-depth safety analysis throughout the three temporary horizons of the Air Traffic Flow and Capacity Management system: strategical, pre-tactical and tactical. The flight-plan processing demands different measures depending on the temporary horizon. The measures mean geographical restrictions (airways or air corridors segregated for RPAS) and temporary restrictions (periods in which RPAS cannot operate). Both restrictions ensure that RPAS operation is safe and do not generate interactions with conventional aircraft. The last goal of this approach is to provide the required information to the RPAS operator based on the information available from the Network Manager (NM). The communication and information flow between the RPAS operator and the NM are detailed to validate flight-plan processing. If the initial flight plan is not affordable, the NM provides modifications during the flight-plan re-processing. The methodology is applied in the Spanish upper airspace. The results confirmed the validity and leeway of the flight-plan processing, although its implementation demands further improvements based on air traffic flow and path uncertainty.

Examining Dimensions and Components and Application of Supply Chain Financing (In Chain Stores)

Purpose: Supply Chain Finance (SCF) is a new approach in financing the working capital of economic enterprises, which can ultimately lead to economic growth and financial stability through efficient and smooth allocation of financial resources, improving financial risk management and increasing financial inclusion. Supply chain financing which runs parallel to the flow of goods and information, is common to all financing networks, and therefore it is important to understand its dimensions. The financing chain provides the cash flow needed to ensure the doors are kept open, the lights are on, employees are paid, and products are produced and shipped. Methodology: To achieve this goal, SCF uses principles that have been effective in supply chain management (SCM) for decades. The core of this financing chain is to create an optimization plan that can simultaneously control all supply chain financial processes. Findings: According to these cases, in this paper, considering the importance of managing the financial flow along the chain and using the principles and basics of research in the method of fact-finding and case study, an effort was made by examining the characteristics, dimensions and components of financing in the supply chain. As well as practical experiences in this field, a conceptual framework for the effective use of the financial flow management system as well as its principles and foundations should be provided. Originality/Value: In this paper, we will examine dimensions and components and application of supply chain financing (in chain stores).

JUSTIFICATION OF THE PARAMETERS OPTIMIZATION OF THE ENTERPRISE'S CASH FLOWS

Cash flow management is a key aspect of an enterprise's activity, as it is used to regulate all spheres of activity of a business entity, therefore issues related to the effectiveness of this process are of great relevance. The article substantiates the theoretical basis, develops a methodical approach and practical proposals for improving the cash flow management system. The object of the study was the company's cash flow management processes. The subject of scientific research was the theoretical, methodical and applied aspects of cash flow management of the enterprise, as well as modern methods of its optimization. An economic-mathematical model of multi-game optimization of the company's cash flows has been developed, which allows you to accumulate the necessary stock of cash assets in periods of high business activity and direct them in such a way that planned and necessary payments are made during the period of shortage of funds. The main criterion of the proposed model of cash flow optimization is the maximization of net cash flow from operating activities, which should ensure the development and expansion of the enterprise's activities on the basis of self-financing due to the growth of the areas of activity. According to the proposed model, the optimal balance of cash assets, insurance, compensation and current stock of cash assets for a specific enterprise is determined. The proposed model makes it possible to accumulate the necessary stock of monetary assets in periods of high business activity and to direct them in such a way that in the period of shortage of funds, planned and necessary payments are made, as a result of the implementation of the model, it becomes possible to avoid attracting credit resources and related expenses, while receiving additional profit from investing temporarily free funds. The information base of the study was made up of the fundamental theoretical provisions of economic science in the field of enterprise cash flow management, researched in the works of outstanding domestic and foreign economists, legislative and regulatory acts of Ukraine, government decisions and resolutions, N(S)BO, P(S)BO, financial reporting of Urozhai LLC.

Data Collection and Management of Digital Process of Painting and Calligraphy Based on Internet of Things

With the advent of the information age, the research on the digitization of calligraphy and painting information is particularly important. In order to improve the efficiency of data management after the digitization of printed information, this paper designs a digital information flow management system and data retrieval model based on the Internet of Things. According to the mismatch between the selected unit and the actual spatial data distribution and the influence of data dispersion, an algorithm for building an r-tree of a digital information flow control system using computer graphics is proposed through efficient data retrieval based on the r-tree index. The experimental results show that the algorithm has good practicability.