Operational Level Research Articles

Сучасні тенденції розвитку двигунів безпілотних літальних апаратів

The subject of this study is the current state and prospects for the development of the market for unmanned aerial vehicles (UAVs) and power plants. The purpose of this work was to identify trends in the development of UAV engines of various classes. Task: collection, systematization, and analysis of information on the most common engines of reconnaissance and strike UAVs of the operational-tactical level, as well as UAVs of the "barrage ammunition" class. This article provides a brief description of various types of UAV power plants, and their main advantages and disadvantages are given, which are often decisive when choosing the type of power plant for a specific UAV. It was found that a power plant with an internal combustion engine (ICE) is best suited for use in medium- and long-range UAVs.This study demonstrated that four-stroke internal combustion engines are most commonly used in reconnaissance-strike UAVs at both operational and tactical levels. The features of the design and characteristics of four-stroke internal combustion engines, which have become the most widely used UAVs, are described. It was determined that the introduction of turbocharging or increasing the pressure is the main means of forcing four-stroke internal combustion engines, which makes it possible to simultaneously achieve high specific power and high brake efficiency of the engine over a wide range of altitudes during its operation. It is shown that one of the most important tasks for a long-range UAV engine is to reduce the specific brake fuel consumption. Thus, there is a tendency to promote the use of high-powered aviation diesels in long-range UAVs. It was determined that the main requirements for UAV engines of the "barrage ammunition" class are high specific power, low cost and adaptability to mass production. This study shows that gasoline two-stroke internal combustion engines with crank-chamber scavenging are extremely widespread in UAVs of the "barrage ammunition" class. The design features and characteristics of UAV two-stroke internal combustion engines are described. The main means of ensuring high specific power of such two-stroke internal combustion engines are increasing the engine RPM, optimizing gas exchange processes, and reducing the weight of the construction by using new materials. Conclusion. The results show that depending on the UAV type, the set of engine requirements can vary significantly. Modern trends in the development of UAV engines of various classes have been determined. Potentially promising directions for increasing the efficiency of engines and for comprehensive improvement of their indicators and characteristics have been determined.

Mechanism Analysis and Path Study of Digital Transformation on Corporate Governance: Evidence from Chinese Listed Companies

Corporate digital transformation, primarily driven by data and leveraging digital technologies and mathematical algorithms such as Internet+, big data, cloud computing, artificial intelligence, and blockchain, is a crucial enabler of sustainable development. This transformation integrates various aspects of corporate production and operations, enhancing the level of digital operations and ultimately contributing to high-quality and sustainable development. This paper, based on data from listed companies in China’s A-shares from 2007 to 2021, theoretically articulates the intrinsic mechanism between corporate digital transformation and corporate governance level, with a focus on sustainability. It empirically finds that a higher degree of digital transformation correlates with an improved level of corporate governance, fostering sustainable practices. Further investigation reveals that digital transformation elevates corporate governance by enhancing innovation capabilities, reducing information asymmetry, and promoting sustainable strategies. This paper provides policy insights for promoting corporate digital transformation as a means to achieve sustainability goals and optimizing management’s corporate governance level for long-term sustainable success.

Use of Standard Operating Procedures for Supporting Cross-Organizational Emergency Management: Challenges and Opportunities Identified from a Tabletop Exercise

AbstractThis study investigated the crucial role of formulating and applying standard operating procedures (SOPs) in the context of emergency planning and response. The effective application of SOPs during operations is essential in order to address challenges that surpass individual organizational capacities. A specific focus on fostering efficient information sharing and executing specified actions maximizes the prospect of success. To explore the collective functionality of SOPs across organizations, we conducted a comprehensive tabletop exercise involving 10 organizations spanning tactical, operational, and strategic levels. Our analysis identified six key challenges, primarily related to the structures for information sharing, communication pathways, and the complex integration and application of common SOPs within these diverse organizational contexts. This research contributes insights into the use of SOPs in large-scale, cross-organizational scenarios.

Navigating organizational change through a processual perspective on the transition toward the circular economy: Save The Duck case study

PurposeBy rooting our study in Lewin’s change management theory, we conduct an in-depth case study of a medium-sized fashion firm transitioning toward a CE. Through adopting a multi-level and processual perspective, we offer empirical evidence of the change process and elucidate the drivers and resistance to change factors.Design/methodology/approachWe opt for a single in-depth longitudinal case study of a fashion firm that was born with a sustainable business model and that is in transition toward the CE. We involve multiple informants, and we adopt a processual approach to uncover the drivers and resistance to change factors at different organizational levels (i.e. top and middle management and operational levels).FindingsOur findings enable us to highlight novel key drivers and resistance factors at the organizational level. Regarding the former, we reveal the involvement of top and middle management in the decision-making process and the recruitment of young people. For the resistance factors, we identify adaptation to structural change, reluctant mindset, internal divergence of ideas, and commitment of all organizational levels to the CE.Research limitations/implicationsThe paper presents some limitations. First, our research is based on a single in-depth case study, which, while allowing for rich, detailed exploration, inherently limits the statistical generalizability of our findings. Focusing just on one organization located in a specific industry and geographical context means that our results may not be directly applicable to all organizational settings. Firms belonging to other industries would probably show different patterns of change due to industry-specific drivers and barriers. Also, the institutional and geographical contexts of our case study inevitably influence the cognitive and cultural aspects of the drivers and barriers we identified. Then, our research provides a processual yet not longitudinal view of OCCE, thus not fully capturing the long-term dynamics of the phenomenon.Practical implicationsOur findings underscore the critical role of visionary leadership, particularly stemming from the CEO, in driving CE transition. Leaders should articulate a clear vision for sustainability, foster a culture of experimentation and actively identify opportunities for CE implementation. Moreover, our results suggest that organizational culture plays a fundamental role in supporting CE transition. Creating a dedicated sustainability team to coordinate CE initiatives and counter the internal resistance, fostering the engagement of all organizational levels in CE initiatives, developing training programs to enhance CE knowledge and skills throughout the organization and recruiting young talents are some of the key recommendations we posit to firms aiming to start the process of CE transition.Originality/valueThis paper contributes to the emerging literature on “Organizational Change toward a Circular Economy” (OCCE) by providing a processual analysis of organizational change toward the CE. Through an in-depth exploratory study of a fashion firm in transition toward the CE, we were able to identify drivers and resistance factors and to offer a visual map of our findings to graphically show the change toward the CE and the drivers and resistance to change factors that have thus far been under-investigated from an organizational level (Graessler et al., 2024).

Dynamic Flexible Allocation of Slots in Container Line Transport

Due to the imbalance between supply and demand, liner container transportation often faces the problem of low slot utilization, which will occur in the shipping process, such as dry container demand exceeding the available dry slots and reefer slots not being fully utilized. This makes it important and challenging to maintain a balance between the actual demand and the limited number of slots allocated for liner container transport. Therefore, this study proposes a flexible allocation method: expanding the types of containers that can be loaded in the same slot. This method is suitable for handling each dynamic arrival container booking request by shipping enterprises, making decisions to accept or reject, and flexibly allocating shipping slots. In order to maximize the total revenue generated by accepting container booking requests during the entire booking acceptance cycle, we establish a dynamic programming model for the flexible allocation of slots. For model solving, we use the Q-learning reinforcement learning algorithm. Compared with traditional heuristic algorithms, this algorithm can improve solving efficiency and facilitate decision-making at the operational level of shipping enterprises. In terms of model performance, examples of different scales are used for comparison and training; the results are compared with the model without flexible allocation, and it is proved that the model proposed in this paper can obtain higher returns than the model without flexible allocation. The results show that the model and Q-learning algorithm can help enterprises solve the problem of the flexible allocation of shipping slots, and thus, this research has practical significance.

Vocational Education Administration, Bilateral System under the Office of the Vocational Education Commission Kalasin Province

Background and Aims: Vocational education administration Dual system of educational institutions under the Office of the Vocational Education Commission. It is a professional education arrangement that arises from an agreement between an educational institution and a business establishment. The main objective is to develop and train professional skills for students. To prepare for future work the objectives of this research are to study the following: (1) Level of administration of vocational education, dual system, of vocational education in Kalasin Province. According to the standards for managing vocational education in the dual system of the Vocational Education Commission. To assess the quality and efficiency of operations at the operational level. 2) Compare the level of vocational education administration in the dual system of vocational education in Kalasin Province. To find differences in management in various areas and the use of various approaches to develop educational quality. (3) Study guidelines for promoting or developing the administration of vocational education, a dual system, of educational institutions under the Office of the Vocational Education Commission, Kalasin Province. To suggest ways to improve and develop educational administration to be more efficient. Methodology: In this research the sample group used was a total of 196 people. The research tool was a questionnaire with a 5-level rating scale, which had a confidence value of 0.81 and an internal consistency (IOC) in the range of 0.6-1.00. This questionnaire was designed to inquire about the administration of vocational education. Dual system of educational institutions under the Kalasin Provincial Vocational Education Institute. For data analysis use basic statistics, including frequency, percentage, mean, standard deviation and statistical tests used to compare differences, including t-test and F-test. Results: The results of the research found that: (1) Vocational education administration overall, it was at a high level. (2) Results of comparative analysis of opinions regarding vocational education administration classified by position, educational level, and size of educational institution found that there was no difference. (3) Guidelines for developing vocational education administration It is necessary to be supported and encouraged to be able to develop and adapt to the changes in today's industrial world. The various areas that should be developed include: 1) Quality of graduates: They must have knowledge and abilities that are accepted by the industry. 2) Curriculum development: Curriculum should be developed together with entrepreneurs and other stakeholders. 3) Measurement and evaluation: An effective measurement and evaluation system should be developed. 4) Cooperation between Educational institutions and business establishments: There should be strong relationships and cooperation in developing students. Conclusion: Vocational education administration Dual system of educational institutions under the Office of the Vocational Education Commission Kalasin Province. It is necessary to strengthen cooperation between educational institutions and enterprises. By giving the private sector an opportunity to participate in setting criteria and guidelines in various areas to be clear and consistent with the needs of the labor market. In this regard, there should be an effective evaluation process in order for management to be systematic and produce good results.

The Role of Educational Institution Administrators in Operating the Student Care and Assistance System at Vocational Colleges in Chonburi Province

Background and Aims: The objectives of this research are as follows: 1. to study and evaluate the operational level of the student care and assistance system. Students in vocational colleges in Chonburi Province 2. To compare the performance of the student care and assistance system in such colleges classified by status. and 3. to propose guidelines for operations related to the role of school administrators in developing student care and support systems for students in vocational colleges in Chonburi Province. Methodology: The sample group in this research consisted of administrators and teachers from vocational educational institutions in Chonburi province, totaling 269 people, using questionnaires as a tool for collecting data. which has a reliability value of the questionnaire at 0.97. For data analysis, basic statistics were used, including frequency, percentage, mean, and standard deviation. As for hypothesis testing, t-test statistics were used. Results: The finding found that (1) The opinion regarding the role of educational institution administrators in operating the student care and support system Students in vocational colleges in Chonburi Province Overall it is at a high level. (2) Level of opinions regarding the role of educational institution administrators in operating the student care and assistance system, classified by gender, found that overall there was no difference. When considering each aspect, it was found that the areas of student promotion and development were significantly different at the 0.05 level. While knowing each student individually student screening Preventing and solving student problems. And in the forwarding aspect, no differences were found. (3) Level of opinion regarding the role of educational institution administrators in operating the student care and assistance system, classified by status It was found that there was a statistically significant difference at the 0.05 level. Especially in the area of ​​student screening and in the area of ​​student promotion and development. which were significantly different at the 0.05 level, while no differences were found in other aspects. Conclusion: The study discovered that vocational college administrators in Chonburi Province are widely perceived to play an important role in student care and support. While gender had no overall impact on these opinions, there were differences in student promotion and development, and status had a significant influence on perceptions in areas such as student screening and development (p < 0.05).

Numerical modeling of an offshore shellfish farm exposed to extreme wave conditions

Shellfish cultivation is a sustainable method of providing human food and can help remove large amounts of CO2 from the atmosphere. Over the last two decades, longline-based structures have dominated farming systems. So far, the innovative technologies for open-ocean shellfish farming remain stagnant and need to be developed. As such, this paper preliminarily studies the operation and survivability abilities of an innovative shellfish farm under extreme wave conditions. To that end, an efficient numerical scheme with a robust implicit finite element method is established. First, the numerical modeling of a single module of the shellfish farm is conducted and the numerical results are verified against physical model tests. Then, the numerical modeling is implemented in a full-scale shellfish farm containing nine floating rafts with suspended lantern nets in a 3×3 configuration exposed to extreme wave conditions. Different angles of wave attack and shellfish rafts with and without lantern nets are fully considered, allowing an assessment of the operation and survivability abilities of the shellfish farm under extreme wave conditions in various situations. The results highlight that the angle of wave attack significantly affected the energy absorption of the mooring system. Moreover, non-linear instability such as subharmonics, which existed in the motion dynamics, can be manipulated to avoid resonant motions. This study provides insights into the evaluation of the safety design of a shellfish farm at both operational and survivability levels. The numerical method can also model other advanced offshore marine structures with multi-modules, such as floating bridges, airports, and even floating energy islands.

Grounded Theory on Creating and Maintaining Adult Education Programs in Selected Higher Education Institutions in the Philippines

<p style="text-align:justify">This study is an attempt to develop a grounded theory on how adult education in higher education (AEHE hereafter) programs in the Philippines are created and maintained. The grounded theory illustrates the interrelation of factors that stimulate or serve as the drivers of AEHE in higher education institutions in the Philippines as well as the management and maintenance of AEHE at the operational and strategic levels, hence illustrating the bigger picture of adult education in higher education in the Philippines. Funded by the Commission on Higher Education (CHEd) of the Philippines, this study was part of a larger research project that investigated adult education in Philippine higher education institutions, that is, State Universities and Colleges (SUCs) and Private Higher Education Institutions (PHEIs). The data were derived from focus group discussions (FGD) with 43 participants from eight SUCs and nine private HEIs that have adult education programs that are regularly offered every academic year. The grounded theory drawn from the study pointed to the contextual – personal and institutional – factors, strategic and operational levels of management as well as the critical role of academic policy for the implementation and maintenance of AEHE programs, collaboration, and a compelling vision to ensure that adult education in higher education in the Philippines is prioritized in the country with involvement of relevant government agencies that will draw definite agendas and priorities to attain the goals of AEHE through a structure and management to carry out its functions and realize its compelling objective of creating a cadre of AEHE educators and specialists and adults suited for the demands of a knowledge-driven economy.</p>

The Asymmetries Generated by New Weapon Systems and Their Role in Achieving Success on the Battlefield. The Impact of HIMARS on the Conflict in Ukraine

The advent of new weapon systems, which integrate the latest technologies, is transforming the battlefield and redefining the character of contemporary modern warfare. The recent armed conflicts in Syria, Yemen, Nagorno-Karabakh, and Ukraine, by their complexity, serve to illustrate the diversification of threats and the adaptation of military capabilities to counter them. Regardless of the type of conflict, success on the battlefield depends on the ability to gain an advantage over the enemy and exploit it. Such an advantage may be derived from the realization of asymmetries on the battlefield, which may be generated at all levels of military operations. The equipping of the Ukrainian forces with the HIMARS system in the summer of 2022 has given them a significant position of advantage, creating a number of tactical and operational asymmetries. In this context, the objective of this research is to identify the asymmetries generated by the HIMARS system and to determine how they contributed to the battlefield success. The key findings are of significant value due to the fact that most NATO member states, including Romania, are making efforts to strengthen their HIMARS capabilities.

Challenges of Conducting Point-Of-Care Testing Operations In The Municipal Public Health System Based Ambulatory Care Clinics In New York City

Abstract Introduction/Objective Our New York City Municipal Public Health System- based multisite ambulatory clinics that offer various waived POCT (point of care tests) and provider-performed microscopy (PPM) to our communities, ensure standardization and quality of POC testing across our health system. Our laboratory service conducts system-wide centralized implementation, monitoring and oversight of the POCT operations regarding regulatory compliance, test performance, quality control and training. With our day-to-day POCT operations, like all other clinical laboratories, our ambulatory care clinics encounter various hurdles and challenges. Here we elaborated on the issues we encounter and how we manage to overcome them. Methods/Case Report We identified and stratified the challenges that affect our managerial as well as field-level laboratory operations and devised ways to deal with those POCT operational issues. Results (if a Case Study enter NA) Among the staffing issues, rapid staff turnover causes significant delays or cessation of POCT operations in our ambulatory care clinics, due to orientation, re-education and ensuring competency to the staff, that conducts POCT in our clinics. Besides, supply shortages, staff shortages and absences due to illness and overwork are the issues, noted at the laboratory field operational level. Delays in the processing of paperwork and new staff recruitments and in the laboratory supply chains are notable management issues. Conclusion Even though the vastness and complexity of our multisite ambulatory care network sometimes affect our ambulatory care clinic POCT operation in various challenging way, our timely, planned and coordinated intervention, close monitoring and communication and rapid initiatives handle those issues very effectively to ensure the quality of POC testing for the patient safety and care across our health system, which is one of the largest municipal-based public health care, in the country.

A novel frequency constrained unit commitment considering VSC-HVDC's frequency support in asynchronous interconnected system under renewable energy Source's uncertainty

The increasing share of renewable energy source (RES) poses a challenge to the frequency security of the power system. Frequency constrained unit commitment (FCUC) serves as an effective measure to address this challenge at the operational level. This paper introduces a novel FCUC model applicable to the asynchronous interconnected system connected by voltage source converter based HVDC (VSCHVDC), fully taking into account the frequency support capability of VSCHVDC in order to reduce the demand for synchronous generators' inertia and reserve while ensuring frequency security, thereby lowering operating costs. Additionally, the uncertainty of RES is also considered. The constraint expressions for three frequency indicators are derived based on a system frequency response model that includes frequency support from VSCHVDC. The proposed model optimizes unit commitment, generation and reserve dispatch and VSCHVDC transmission power and frequency response parameters, while addressing RES uncertainty using the distributionally robust chance constrained approach. In response to the highly nonlinear characteristics of the maximum frequency derivation (MFD) constraints, we propose an intelligent sampling-based support vector machine to convexify the MFD constraints and introduce a two-stage decomposition algorithm for solving the model. The effectiveness of the proposed model is demonstrated based on a modified IEEE RTS-79 system.

The Integral Assessment of Playing Tactics in National Football Teams

Objectives. The objective of the study was to determine the features of competitive activities among national football teams based on the integral assessment of playing tactics. Materials and methods. The study was conducted during the 2024 European Football Championship. The competitive activities of national football teams from European countries (Germany, Spain, England, Switzerland, France, Portugal, Netherlands, Turkey) were analyzed, focusing on the playing tactics in 50 halves. In order to carry out the study, the following methods were used: theoretical analysis of literature sources; pedagogical observation of competitive activities; analysis of video materials of competitive activities; methods of mathematical statistics. The statistical analysis of the research results was conducted using descriptive mathematical statistics. The sample was characterized by determining the arithmetic mean, standard deviation (S), and coefficient of variation (V). The significance of observed differences in the indicators was assessed using the parametric Student’s t-test for independent samples. Prior to this, the data’s conformity to a normal distribution was verified using the Shapiro-Wilk W-test. Results. A methodology for the integral assessment of the tactics undertaken by national football teams was developed. The integral assessment of team tactics consisted of 10 specific coefficients that reflect the main components of football players’ competitive activities in the phases of ball possession and recovery. The competitive activities in 50 halves of the 2024 European Football Championship were analyzed. The average value of the integral assessment of the tactics in national football teams was determined to be 5.62 ± 0.43 points. The findings revealed significant tactical variations between the teams, with Spain’s use of high pressing and creative play contributing to their championship victory. A ten-point scale for evaluating the tactics of national football teams was developed, on the basis of which the level of competitive activities is interpreted. Conclusions. The developed methodology for monitoring and analyzing the tactics of football teams allows for targeted management influences on the competitive activities of football players at the operational, current, and stage levels.

Integrated People and Freight Transportation: A Literature Review

Increasing environmental and economic pressures have led to numerous innovations in the logistics sector, including integrated people and freight transport (IPFT). Despite growing attention from practitioners and researchers, IPFT lacks extensive research coverage. This study aims to bridge this gap by presenting a general framework and making several key contributions. It identifies, researches, and explains relevant terminologies, such as cargo hitching, freight on transit (FoT), urban co-modality, crowd-shipping (CS), occasional drivers (OD), crowdsourced delivery among friends, and share-a-ride, illustrating the interaction of IPFT with different systems like the sharing economy and co-modality. Furthermore, it classifies IPFT-related studies at strategic, tactical, and operational decision levels, detailing those that address uncertainty. The study also analyzes the opportunities and challenges associated with IPFT, highlighting social, economic, and environmental benefits and examining challenges from a PESTEL (political, economic, social, technological, environmental, and legal) perspective. Additionally, it discusses practical applications of IPFT and offers recommendations for future research and development, aiming to guide practitioners and researchers in addressing existing challenges and leveraging opportunities. This comprehensive framework aims to significantly advance the understanding and implementation of IPFT in the logistics sector.

The technopolitics of border security R&D: Shaping the EU’s border in the Security Research Programme

Technologies are predominantly understood as ‘solutions’ for policy problems in EU border control. This has prompted increased political attention to research and development (R&D) of ‘innovative’ security technologies. The European Commission has continuously increased its spending on the development of security devices in the Security Research Programme; at the same time, border security institutions such as Frontex or eu-LISA have worked to amplify their influence on shaping security research in the EU’s Research Framework Programmes. Against this backdrop, this article develops the argument that R&D is a political practice of ‘making’ and governing the border through its entanglement with the politics of border security in the EU. By conceptualizing R&D as ‘borderwork’, the article interrogates how practices of security R&D inscribes specific logics into EU border security and control. In doing this, it also problematizes how R&D locks in exclusionary dichotomies and categorizations of mobilities through privileging security actors in the process. Based on qualitative interviews, the article provides an in-depth analysis of political processes through which R&D programmes and projects materialize at policymaking, implementing and operational levels. Through this, the article explores comprehensively how political logics of bordering are constantly shaping and simultaneously renegotiated in R&D.

Contribution of controlling to the business success of a company in the example of Pevex

Controlling, as an advisory function of management, reflects on the quality of company management at the strategic, tactical and operational levels. To a large extent, it contributes to the timely and quick reaction of the management to changes inside and outside the organization and thus minimizes risks and optimizes operations. At the same time, the application of appropriate controlling instruments affects the efficiency and effectiveness of business operations. The purpose of the research was to determine the role and contribution of controlling in the stabilization of Pevex’s operations after restructuring, as well as management’s perception and the role of controlling instruments in operations. In order to examine the established relationships, research was conducted using the semi-interview method with company management and analysis of f inancial statements and selected business financial indicators, as well as SWOT and TOWS analysis. The results of the research showed that there is a significant role and contribution of controlling in the stabilization of business after the restructuring of Pevex. Controlling greatly contributed to the adjustment of the business strategy, which affected business indicators measured by liquidity, profitability, economy, profitability and indebtedness. Management’s perception is that the use of controlling instruments contributes to the organization’s management processes and the achievement of the organization’s set goals. Based on information from the company itself, the controlling system at Pevex is presented, its contribution to management in making business decisions, and recommendations for further development are given. Primary data sources from the company itself and secondary data sources (annual financial reports) were used for the analysis.

Methods for addressing variable turbine operations during wind farm noise compliance monitoring

Post-construction wind farm noise measurements at dwelling locations are commonly required in Australia to verify compliance with noise limits. These are often required as soon as the wind farm begins operating. However, commissioning issues and electricity network restrictions are a common occurrence during initial stages of operation. As such, curtailed modes of operation and shutdowns are a regular occurrence, and large sections of a wind farm may only be operating intermittently. This presents challenges to obtaining noise measurement data that is representative of normal operation of the wind farm, and may ultimately limit the conclusions that are able to be reached from measurements during the early stages of operation. To address these challenges, it is necessary to identify and account for any periods when operational noise levels may be lower as a result of turbines being curtailed or shut down. Several methods have been developed for this purpose, and range from simple procedures that remove any data affected by curtailment or shutdown, through to more complex assessments of the magnitude and implications of the uncertainty introduced by variable wind turbine operations. These methods are presented and assessed in this paper with case studies of their application to operational projects.

Quieter and calmer than before: sound level measurement and experience in the intensive care unit at Erasmus Medical Center

Intensive care units (ICUs) are the ultimate socio-technological environments known for their loud sound levels. Alarms, noise produced by patient support devices, loud conversations, physical interactions with tools and the environment in general contribute collectively to a sound quality generally perceived as low. This paper reports the results from a study conducted inside the old and new ICUs at Erasmus Medical Center, Rotterdam, the Netherlands. Sound level measurements have been collected continuously for three weeks in several matching rooms inside the old and new ICUs at full operational level at a one-year distance from one another. The results support the idea that changes in architectural layout, procedures, and culture have contributed to a significant decrease of the measured sound levels across all daily shifts, both inside patient rooms and in the nurse stations. We further discuss the results in light of a series of contextual considerations that emerged from interviews with healthcare providers (i.e., nurses and intensivists) who actively worked in both the old and the new ICU.

Forms of Representation of Military Culture in Computer Games

The purpose of this article is to identify the forms of representation of military culture in computer games. In the course of the research, six types of interpretations of military culture were presented on the basis of a systematic approach, which made it possible to formulate a more general, broad concept that served as a basis for the subsequent discovery of its aspects and representations in computer games developed since the 2000s. The representation of aspects of military culture in games is reflected in four forms of representation: through game theme, individual game elements and stories, game genre, and game mechanics. The first one takes into account that the military theme is revealed in computer games in several forms of relation to reality: military-historical games; games thematically related to the modern army and modern military conflicts; games modelling military conflicts of the near future; fantasy games representing the army or armed forces of the distant future; fantasy games. The second demonstrates that mechanical elements and plot moves related to military culture can be present in games of almost all genres. The third defines genres related to military culture, the division of which is along the lines of personalized participation in military actions/simulation of a certain command and operation level, and each of them has its own aspects. The distinctive feature of the above forms is a limited representation of military culture, subjective focus on individual aspects. The fourth form of representation assumes a positive forecast of the development of computer games about military culture. It is expected that a simulator of everyday activities of servicemen will appear, which would make it possible to take a new look at military games and reflect the requirements of Russian legislation in the field of defense. This will help, among other things, to shape the directions of the state cultural policy for the development and preservation of the spiritual and moral foundations and traditional values of Russian culture embodied in modern forms and genres of art.

Decision-making method of managed pressure drilling based on real-time calculation and analysis models

Abstract As petroleum exploration and development extend towards marginal, deep, and unconventional resources, drilling challenges such as narrow density windows and high wellbore control risks become increasingly prominent. Managed pressure drilling (MPD) proves effective in reducing drilling operational difficulties and well control risks in narrow safe-density window formations. However, existing MPD systems have limited capabilities for real-time calculation and analysis in the absence of downhole pressure measurement data, hindering accurate guidance for real-time calculation, analysis, and control decision recommendations in both conventional and precise MPD operations.Therefore, based on on-site engineering logging, real-time data from MPD operations, a branch decision tree was established to automatically determine the operational conditions of MPD. This achieved real-time identification of 11 drilling conditions. Starting from the characteristics of two-phase fluid flow in the annulus, coupling wellbore pressure and formation fluid invasion, a predictive model for annular pressure distribution during MPD was established. This model facilitated the calculation, determination, and recommendation of the pre-control value for wellhead backpressure. Building upon theoretical research, a MPD calculation, analysis, and control decision system was developed. Field testing and validation indicated that the system could simulate and analyze wellbore pressure and wellhead backpressure values, automatically identify drilling conditions and downhole complexities. The average error between the calculated and measured values of the standpipe pressure was 1.88%. The accuracy of the predicted wellhead backpressure values based on safe operating conditions compared to the actual controlled values reached 89.8%. This system achieved real-time calculation, analysis, and control decision-making based on real-time engineering parameters, enhancing the reliability and timeliness of wellhead backpressure control in MPD operations. It effectively guided conventional MPD operations and improved the capabilities and intelligence level of precision MPD operations after process optimization.