Operation Planning System Research Articles

Improvement of operational planning by small shipping enterprises

The article analyzes the current state and prospects for the development of the system for operation planning of the river cargo fleet. The main changes in the work of the fleet since the early 1990s and the necessity for improvement of the existing planning system are noted. The factors that should be taken into account when developing a fleet operation planning system (FOP) for a particular shipping company are specified. The analysis of the "small enterprise" concept in relation to a shipping company (SC) is given and the main distinguishing features of a small enterprise from a large one are indicated. The reference is made to the necessity of developing a FOP system for small SC, which will take into account modern economic conditions and trends. The importance and possibility of using information technologies as a basis for continuous voyage planning is substantiated. Some distinctive features of implementing continuous planning in maritime transport and on inland waterways are formulated. The principles that the operational planning system must comply with in modern conditions are presented.

Application Of Activity-Based Costing Method in The Eestimate of Cataract Surgery Cost

Objective: Hospital managers need to have accurate information about actual costs to make efficient and effective decisions. Activity-based costing (ABC) is put forward as an alternative, more accurate costing method to calculate the cost of medical treatment. The objective of this paper is the application of an activity-based method to estimate the cost of cataract surgery in an ophthalmic hospital. Methods: The present descriptive-analytical study was carried out at an ophthalmic hospital, in February and March of 2021, in Iran. Surgical operations for cataracts were considered. The required data were collected through conducting interviews with experts and relevant units, direct observation of activities, analysis of documents in the financial department, and the hospital information system (HIS) and financial software system of the hospital. The cost of surgical operations was estimated by activity-based costing (ABC). Results: According to the findings, the amount and the share of the total costs of the activities identified in the main centers were as follows: human resources 54.24% of the total cost of cataract surgery which is the highest share of surgery costs; the cost of consumables was 32.57% of the total cost of cataract surgery is the second share of surgery costs. Conclusions: The research results showed that in this regard administrators should design and implement a comprehensive operational planning system in the hospital.

Reinforcement Learning and Advanced Reinforcement Learning to Improve Autonomous Vehicle Planning

Planning for autonomous vehicles is a challenging process that involves navigating through dynamic and unpredictable surroundings while making judgments in real-time. Traditional planning methods sometimes rely on predetermined rules or customized heuristics, which could not generalize well to various driving conditions. In this article, we provide a unique framework to enhance autonomous vehicle planning by fusing conventional RL methods with cutting-edge reinforcement learning techniques. To handle many elements of planning issues, our system integrates cutting-edge algorithms including deep reinforcement learning, hierarchical reinforcement learning, and meta-learning. Our framework helps autonomous vehicles make decisions that are more reliable and effective by utilizing the advantages of these cutting-edge strategies.With the use of the RLTT technique, an autonomous vehicle can learn about the intentions and preferences of human drivers by inferring the underlying reward function from expert behaviour that has been seen. The autonomous car can make safer and more human-like decisions by learning from expert demonstrations about the fundamental goals and limitations of driving. Large-scale simulations and practical experiments can be carried out to gauge the effectiveness of the suggested approach. On the basis of parameters like safety, effectiveness, and human likeness, the autonomous vehicle planning system's performance can be assessed. The outcomes of these assessments can help to inform future developments and offer insightful information about the strengths and weaknesses of the strategy.

GIS applications for modern-style military operations planning

The primary objective of the article is to reflect the practical necessity and possibilities of using GIS software for planning of military operations in the contemporary information environment. The results analysed by the GIS platforms can be used by the specialists in all fields of operational planning by providing the requested data that can improve the performance of operational planning. The obvious need for the development process of the operational planning system in the context of the adoption of planning procedures appears as an opportunity, especially in the current stage of the reformation of the National Army. The geographical characteristics of the area of operation are thoroughly analysed from all available geographical sources. Until now, the most effective method of determining the geographical features of the terrain in the area of operation was considered to be reading from printed topographic maps, which included a series of additional determinations and analyses that were carried out through complex and long-lasting procedures. Accordingly, this fact was not allowing quick decision-making, and often, erroneous analysis of the terrain could lead to incorrect deductions that required commanders of all levels to make wrong conclusions, accordingly to expose them by orders.

THE PUMPED-STORAGE HYDRO POWER PLANT MODEL WITHIN IN THE POWER SYSTEM RELIABILITY AND AVAILABILITY MODEL

This paper deals with a model that comprises the pumped-storage hydro power plants in the power system reliability and availability calculations, as well as a model of the impact of inflow deficiency and water storage risks on the operational planning of such plants within the framework of operational planning systems for periods of up to one year. The impact of inflow uncertainties is related to the characteristics of watercourses where the water storage reservoirs and hydro power plants are built, but also to the operation cycles and possible operation modes in the system.

The concept of the operational planning system for the departure of goods from ports on inland waterways

The article is devoted to the description of the main informational and algorithmic solutions necessary for the implementation of the operational planning system for the dispatch of goods by river vessels. The current concept of the operational planning system concerns only the departure of ships and convoys, that is, such systems were intended for use by shipowners. The concept proposed in the article defines the main features of the system intended for cargo owners. The main decision-making algorithms, as well as the information base necessary for the implementation of the system, are considered.

Мультиагентная модель многономенклатурного мелкосерийного производства

Production planning is a key aspect when optimizing production activities. Simulation is one of the most effective methods available for assessing production problems. The principles of adaptive planning consist of making day-to-day operational decisions at the shop floor, predicting equipment availability, assessing performance, and eliminating bottlenecks. Existing research to eliminate bottlenecks has focused on analyzing data from the physical shop, or vice versa, only on the use of simulated data. Convergence between real and simulated data allows, on the one hand, to obtain more information to predict the availability of each workplace, on the other hand, it allows performance assessment for replanning using a simulation model. Aim. Development of optimization tools for production planning using simulation approaches. Materials and methods. This article presents a multi-agent simulation model for each workplace in the workshop, examines the workload of the workshop, and evaluates the productivity of workplaces. Optimization is proposed for optimal utilization of production facilities. As an example illustrating the efficiency and advantage of the proposed model, we took the production process of electronic equipment in the assembly shop. Results. A planning problem and an approach to optimization are formulated. A multi-agent model of multinomenclature small-scale production has been developed. The model provides for the integration of simulation tools with operational planning systems at the data level. Conclusion. The model proposed in the study allows small-scale production to plan the number of jobs and identify bottlenecks in production. The use of a combination of simulation and planning tools ensures enterprise resource management, taking into account dynamic changes in the system.

Study on Development of an Operation Planning System Based on Case-Based Reasoning Using Machining Features

High-speed and high-precision machine tools developed recently have contributed to shorten machining time in parts machining. However, it consumes long time to determine operation parameters such as machining area, machining method, cutting tool and cutting conditions, and they deeply depend on operators' knowledge and experience. Thus, the preparation time before parts machining remains as a critical issue to be solved to achieve high-mix low-volume production. Therefore, in order to improve the efficiency of process planning, this study proposes an operation planning system to derive operation parameters based on case-based reasoning using recognized machining features. By using information of machining features, it becomes possible to widely deal with operation parameters such as not only cutting tool and cutting conditions, but also tool approaching and retracting patterns that are required to be input in CAM system. Additionally, since machining cases are added to a case database sequentially, the rules for case retrieval are automatically adjusted to utilize the past machining cases effectively in this system. From the result of a case study, it is confirmed that the developed system has a possibility to derive proper operation parameters in parts machining.

Evaluation of in-house, haptic assisted surgical planning for virtual reduction of complex mandibular fractures

PurposeThe management of complex mandible fractures, i.e. severely comminuted or fractures of edentulous/atrophic mandibles, can be challenging. This is due to the three-dimensional loss of bone, which limits the possibility for accurate anatomic reduction. Virtual surgery planning (VSP) can provide improved accuracy and shorter operating times, but is often not employed for trauma cases because of time constraints and complex user interfaces limited to two-dimensional interaction with three-dimensional data.MethodsIn this study, we evaluate the accuracy, precision, and time efficiency of the haptic assisted surgery planning system (HASP), an in-house VSP system that supports stereo graphics, six degrees-of-freedom input, and haptics to improve the surgical planning. Three operators performed planning in HASP on computed tomography (CT) and cone beam computed tomography (CBCT) images of a plastic skull model and on twelve retrospective cases with complex mandible fractures.ResultsThe results show an accuracy and reproducibility of less than 2 mm when using HASP for virtual fracture reduction, with an average planning time of 15 min including time for segmentation in the software BoneSplit.ConclusionThis study presents an in-house haptic assisted planning tool for cranio-maxillofacial surgery with high usability that can be used for preoperative planning and evaluation of complex mandible fractures.

KEY INFORMATION AND COMMUNICATION TECHNOLOGIES AS AN IMPORTANT FACTOR IN IMPROVING THE EFFICIENCY OF SUPPLY CHAINS IN THE FASHION INDUSTRY

The article considers key information and communication technologies used in the supply chains of the fashion industry. The author segmented these technologies into several groups, including selected programs that ensure effective communication between the company’s functional departments and supply chain links; software resources aimed at maintaining logistics operations, such as production, warehousing, cargo transportation; operational and strategic planning systems. The main purpose of the considered information technologies is to take into account the specific characteristics of the “fashion” business, such as a high range and a short product life cycle, the need to take into account the rapidly changing requirements of buyers of goods in the fashion industry, the geographical distribution of supply chain participants. The author performs a review of key software products and technologies that improve the efficiency of business process management in the supply chains of the fashion industry, including CAD and CAM systems, ERP systems on the example of SAP AFS, SAP Fashion Management and some other software resources and technologies.

Mathematical Modeling of Production Processes of Discrete Machine-Building Enterprises Based on the Interaction of Simulation Systems and Operational Planning Systems

Analysis of production systems (PS) of discrete multi-nomenclature machine-building enterprises is a complex task, its solution is necessary to support decision-making during technical re-equipment, modernization or technological preparation of production. The paper shows a concept of joint use of operational scheduling systems and simulation modeling systems to improve the efficiency and adequacy of PS analysis. The problem of determining the deviation of the planned state of the PS from the simulated state and evaluating the level of stability and stability of the PS behaviour on its basis is considered. It is revealed that the proposed approach allows us to more adequately determine the timing of the production program, assess the stability of the PS behaviour when using various planning logics and algorithms, and choose the best one for subsequent use in a real PS.

Treatment and re-operation rates in one thousand and three hundred tibial fractures from the Swedish Fracture Register

PurposeApproximately, 50 persons per 100,000 per year sustain a tibial fracture. There is, however, a lack of large cohort studies that describe the treatment and re-operation frequencies of tibial fractures. The aim of this study was to describe the treatment and re-operation rates of tibial fractures in all segments of the tibia.MethodsData related to all patients aged 16 and above treated for tibial fractures (ICD-10 S82.10-31) at Sahlgrenska University Hospital in 2011–2015 were extracted from the Swedish Fracture Register. To make sure all re-operations were included in the study, the operation planning system was checked for all patients included in the study.ResultsThe study comprised 1371 tibial fractures − 712 proximal, 417 diaphyseal and 242 distal tibial fractures. Among the proximal and distal tibial fractures, plate fixation was the most commonly used surgical method, whereas among tibial shaft fractures, an intramedullary nail was the most commonly used surgical method. Almost 30% (29.8%) of all surgically treated tibial fractures underwent re-operation. Among proximal tibial fractures, 24.0% underwent re-operation; tibial shaft fractures 37.0% and distal tibial fractures 26.8%. Re-operations due to infection were more or less equally common in all segments (3.9–5.4%).ConclusionThis study describes the treatment and re-operation rates after tibial fractures in a cohort of 1371 tibial fractures at Sahlgrenska University Hospital during a period of 5 years. The study shows an overall re-operation rate of 29.8% for fractures in all segments of the tibia.

Street Network Resilience Put to the Test: The Dramatic Crash of Genoa and Bologna Bridges

Various hazards and endemic threats are increasingly looming over cities, leading planners to rely on a rich toolbox of flexible and inclusive planning instruments and methods, capable of dealing with unpredicted events or sudden urban contingencies, when seeking sustainable urban futures. While sustainability-oriented innovative planning approaches are gaining momentum, ways to embed connected concepts in operational planning and design decision support systems have yet to be fully developed and validated. This paper tackles this issue by proposing and testing, in a real-life scenario, a method for the computational analysis of street network resilience, based on Space Syntax theory. The method is suitable to quantify the capacity of urban grids to absorb sudden disturbances and adapt to change, and to offer support for mitigation decisions and their communication to the public. It presents a set of configurational resilience indices, whose reliability is qualitatively assessed considering the ex-ante and ex-post urban configurations generated by two exceptional and dramatic bridge crashes. These events occurred almost simultaneously in two Italian cities with peculiarly similar characteristics. The results confirm the value of the proposal and highlight urban form, and particularly its grid, as a key driver in building urban resilience, together with the self-organisation capacity of local communities.

On the requirements for operational planning systems for industrial production

The article analyzes and systematizes the requirements of potential and real users to computer systems for operational planning and production management. There is a particular attention to production systems of the “Advanced Planning and Scheduling” (APS) class, which have a high degree of integration with the systems of the “Manufacturing Executable Systems” (MES) class. There is also a brief overview of the reasons for the creation of APS systems, as well as their general ideology and conceptual problems in the development. A number of key requirements for APS systems are considered, as far as possible, in the order in which they arise both during the development and the operation of these systems. The article was based on the long-term interaction of its authors with representatives of manufacturing enterprises of various sizes, belonging to different industries located in Russia and the countries of the Commonwealth of Independent States. This interaction was carried out as a part of the implementation of the “Zenith SPPS” information system in the pilot and industrial operation.

A Study on Operation Planning System for Parts Machining Utilizing Case-Based Reasoning

A Study on Operation Planning System for Parts Machining Utilizing Case-Based Reasoning

ANALYSIS OF THE PECULIARITIES OF THE COMMUNICATION ORGANIZATION IN NATO COUNTRIES

According to the Military doctrine ofUkraine, one of the central tasks is to reform the Armed Forces of Ukraine in order to achieve interoperability and technical compatibility with the armed forces of NATO member states, as well as adherence to the standards of work, division of functions and core tasks adopted in the EU and NATO member states. Today, there is a need to improve the system of communication between governing bodies in the military management system. However, the slow pace of implementation of NATO standards is significantly hampering this process. One reason for this is the lack of attention to the adaptation of the Ukrainian Armed Forces' operational planning system to similar systems used in NATO countries. The article analyzes the principal principles of the communications organization and discusses the key steps involved in developing an operational plan based on the capabilities of NATO member countries. Since communication planning is one of the major elements of NATO operations planning, the authors of that article analyzed the operational planning of the communications and information system planning, taking into account the need to alignUkraine's Armed Forces management systems with NATO standards. During the research, the authors examined the main steps involved in planning the communications system, identified the factors that influence its planning process. Therefore, a promising direction for further research by the authors should be considered the justification of ways to improve the planning process of the Armed Forces communications system and detailed research of NATO documentation and standards, in terms of organization and planning of communications, in order to explain the requirements for the military management system inUkraine. This will allow the harmonization (integration) ofUkraine's national development plans with the NATO defense plan.

Multicentre study of the risk of invasive cancer and use of sentinel node biopsy in women with a preoperative diagnosis of ductal carcinoma in situ.

Ductal carcinoma in situ (DCIS) in the breast that is diagnosed by biopsy implies a risk of upstaging to invasive carcinoma (IC) on final pathology. These patients require a sentinel lymph node biopsy (SLNB) for axillary staging. A two-stage procedure is not always feasible and precise selection of patients who should be offered SLNB is crucial. The aims were: to determine the rate of upstaging, and use of redundant and required SLNB in women with a preoperative diagnosis of DCIS; and to identify patient and tumour characteristics that increase the risk of upstaging. Patients with DCIS treated between 2008 and 2016 were identified using Orbit operation planning system software, and those suitable for the study were selected based on review of the medical records. Upstaging rates and proportions of redundant and required SLNBs were calculated. Associations between clinicopathological characteristics and upstaging were analysed using univariable and multivariable logistic regression analyses. Of 1368 patients initially identified, 975 women with a preoperative diagnosis of DCIS were included in the study. Tumours in 246 of these patients (25·2 per cent) were upstaged to IC. Redundant SLNB was performed in 392 of 975 women (40·2 per cent). Forty-four patients (4·5 per cent) with a final diagnosis of IC were not offered SLNB and thus potentially undertreated. In adjusted analysis, DCIS size, palpability and mass formation identified by breast imaging were associated with increased risk of upstaging. The Van Nuys classification was not associated with upstaging. Most patients with IC on final pathology underwent SLNB, but a considerable number of patients with DCIS had a redundant SLNB. Lesion size, palpability and mass formation, but not Van Nuys classification group, are suggested risk factors for upstaging.

Container terminal landside operation analysis and discrete event simulation in container terminal in port: a case study of Terminal 3 Ocean-going PT Pelabuhan Tanjung Priok

This study discusses the landside operation and presents the application of Truck Appointment System (TAS) and lane segmentation strategy through discrete event simulation in Terminal 3 Ocean-going PT Pelabuhan Tanjung Priok. This study aims to analyze the operation planning system in Terminal 3 Ocean-going and identify problems that exist on terminal 3. This study also seeks to examine the landside operation process and offer alternative scenarios to solve the congestion problem in the terminal. Alternative scenarios provided are a combination of Truck Appointment System (TAS) and lane segmentation strategy. Truck Appointment Strategy (TAS) with 100% utilization is proved to reduce average total time in the system by 76% and reduce average total time in peak days by 88%, from 151.5 minutes to 38.4 minutes per truck. Truck Appointment System (TAS) is also proved to reduce queue length by 97%, from 162 trucks to 5 trucks.

The value of 3D visualization operative planning system in ultrasound-guided percutaneous microwave ablation for large hepatic hemangiomas: a clinical comparative study

BackgroundTo evaluate the value of a three dimension (3D)visualization operative planning system in ultrasound-guided percutaneous microwave ablation (US-PMWA) for large hepatic hemangiomas (LHHs).MethodsFifty-eight patients with LHHs were divided into 3D and 2D groups. The therapeutic efficacy was assessed by contrast-enhanced imaging during follow-up. Hepatic and renal function were examined. The complete ablation, tumor volume shrinkage, and complication rates were analyzed.ResultsThe ablation time and energy of the 3D group were lower than those of the 2D group (1152.0 ± 403.9 s vs. 1379.7 ± 375.8 s and 87,407.2.9 ± 50,387.0 J vs. 117,775.8 ± 46,245.6 J, P = 0.031 and 0.021, respectively). The 3D group had a higher complete ablation rate than the 2D group (97.7 ± 2.4% vs. 94.5 ± 3.7%, P < 0.001). The incidence of hemoglobinuria after ablation in the 3D group was lower than that in the 2D group (32.0% vs. 57.6%, P = 0.047). The levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and creatinine (Cre) after ablation in the 3D group were lower than those in the 2D group (126.7 ± 56.4 U/L vs. 210.9 ± 96.2 U/L, P < 0.001; 141.0 ± 60.8 U/L vs. 211.4 ± 90.0 U/L, P = 0.001; 57.3 ± 17.6 U/L vs. 80.8 ± 41.9 U/L, P = 0.010; and 66.6 ± 16.6 mmol/L vs. 84.5 ± 39.6 mmol/L, P = 0.037, respectively). There were no significant differences in antenna insertion and the volume reduction rate between the groups. One patient developed acute kidney injury shortly after ablation in the 2D group and recovered after hemodialysis. No other severe complications occurred during the follow-up period.ConclusionsThe 3D visualization operative planning system has a relatively high clinical application value in providing scientific, reasonable, quantifiable, and individualized therapy for LHHs by US-PMWA.

Ultrasound-guided percutaneous microwave ablation assisted by a three-dimensional visualization preoperative treatment planning system for larger adrenal metastasis (D ≥ 4 cm): Preliminary results.

The objective of this study is to assess the clinical effect and safety of ultrasound-guided percutaneous microwave ablation (US-PMWA) assisted by three-dimensional (3D) visualization operative treatment planning system in larger adrenal metastasis (LAM) (D ≥ 4 cm). From Dec 2011 to Dec 2017, 12 consecutive LAM patients with pathologically proven with a mean diameter of 5.2±1.3cm (range 4.1-7.6) were treated. Artificial ascites and thermal monitoring system as ancillary technique were used. The patients were followed up with imagings and complications were recorded. The median follow-up period was 31 months (ranged 6-52 m). All LAM achieved completely ablation according to the 3D planning preoperation. Complete ablation was achieved in 10 (10/12, 83.3%) patients by one session and 2 patients (2/12, 16.7%) by two sessions. Recurrence was detected at the treated site in 3 patients (3/12, 25.0%) at 5, 9, and 13 months after ablation and received another ablation. Progression of metastasis disease at extra-adrenal sites occurred in 9 patients (9/12, 75%). Seven (7/12, 58.3%) patients died during the follow-up period. Therefore, the 1-, 2-, and 3-year local tumor control rates were 83.3%, 75.0%, and 75.0%, and 1-, 2-, 3- and 4-year overall survival rates were 91.7%, 75.0%, 50.0%, and 41.7%, respectively. No severe complications related to ablation occurred, except 3 (3/12, 25%) patients developed hypertension during ablation. US-PMWA assisted by 3D visualization preoperative treatment planning system maybe a safe and efficient therapy for LAM, which could promote ablation precision, improve the clinical outcomes.