Pilot Operation Research Articles

Iterative Function Allocation of Single Pilot Operations Based on Biclustering Method

The successful transition from a two-pilot to a single-pilot mode cannot solely rely on simply augmenting advanced automation in the cockpit. The degree of support provided by functions at different levels of automation varies, and introducing new functions simultaneously brings new demands for the single pilot, leading to imbalanced workload. To address these shortcomings and enhance the rationality of function allocation under workload constraints, this paper introduces an iterative function allocation method. Initially, the functions are categorized and classified into different levels of automation to obtain the initial function allocation scheme. Subsequently, a novel bicluster mining algorithm called K-Miner is proposed to identify elements requiring iterative design. As a case study, the multitask surface scenario in SPO is considered. By applying the proposed iterative design method, the task performance of the single pilot is improved, the workload of the single pilot is effectively reduced, and situational awareness is improved to a certain extent.

Exploring the Human-Centric Interaction Paradigm: Augmented Reality-Assisted Head-Up Display Design for Collaborative Human-Machine Interface in Cockpit

Human-cybernetic interfaces (HCI) focuses on the integration and synergy of human-centric design, human factors (HFs) and economics, and human–machine interaction (HMI). The scrutiny of single pilot operations (SPO) approval from civil aviation authorities (CAAs) is subject to the aviation safety and pilot capability during exceptional handling and flight emergency. Airliners advocate the possibility from dual pilot operations (DPO) to SPO because of the financial considerations and captain shortage in the post-pandemic era. One could expect that SPO can only realise when reduced crew operations initiative is proven to be safe and airworthy. Public concerns pilot mental workload and potentially low situational awareness (SA) when handling overwhelmed multi-source information from the HMI in a cockpit, leading to degraded skills and flying performance. Advanced head up display (HUD) design, an integrated transparent display, can assist pilots in maintaining their optimal performance when SPO exercised. In this study, we are interested to design a SPO-favoured cockpit design with HUD and investigate the potential of integrating augmented reality (AR) and HUD in SPO in flight operations. An experiment involving 21 pilots was conducted to assess the effectiveness of AR-HUD on SA and workload in DPO, SPO, and SPO with AR-HUD scenarios. The Situation Awareness Present Assessment Method (SPAM) and a self-rated workload scale were used to evaluate SA and workload levels. Eye-tracking data was also collected to analyse behavioural performance. Results indicated that the AR-HUD scenario achieved optimal workload and SA levels and demonstrated superior performance in handling emergencies. Eye-tracking data revealed that AR-HUD facilitated a more equitable distribution of gaze between instruments and external view. In conclusion, the integration of AR in cockpit design introduces a human-centric interaction paradigm, contributing to aviation safety, SPO implementation and adaptive HMI design.

디지털 약자 지원 사업 현황과 지원 방안 : 서울시 사례를 중심으로

The purpose of this study is to provide implications for effective interventions of the digital underprivileged in Seoul through the analysis of the current status of the underprivileged in the era of digital transformation. To this end, a survey analysis was conducted on the satisfaction and needs of 244 stakeholders of the non-face-to-face digital support project in Seoul through actual participation, and a survey analysis was conducted on the participation experience of 109 participants in the three pilot operations for the support service developed based on the participation survey analysis content. The results of this study are as follows. First, learners participated to resolve the inconvenience of daily life, and the intention to re-engage and the degree of help in daily life were high. In addition, they preferred 1:1 face-to-face classes, and the elderly were considered as the top priority of the inclusion policy. Second, instructors of the support group everywhere participated in the virtuous cycle of sharing and learning life experiences, and the degree of program necessity and help in daily life was high, and they preferred 1:1 face-to-face classes in the form of special lectures. Third, in terms of the support service advancement program, participants' ability to use, re-engagement intention, and program satisfaction were high in all regions, and there was a difference in preference for device by region. The implications of this study are as follows. First, a digital inclusion integrated model and a digital education support system for the digital weak. Second, a proposal for the establishment of a self-sustaining digital win-win learning system linked to generations.

Mitigating the Problem of Local Extinction through Pilot Operation of the Gyeongbuk Theme City: Focusing on a comparative analysis between Kawaba Village and the Bu-Ul-Gyeong megacity†

As of 2023, over half of South Korea's 228 regions face population extinction, despite substantial local government efforts. This study examines why the "Busan-Ulsan-Gyeongnam (Bu-Ul-Gyeong) Megacity" initiative failed to address this issue. By analyzing the successful revitalization of Kawaba village in Japan, which attracted more than 2.5 million tourists, this study proposes an innovative solution tailored to South Korea—the "Gyeongbuk Four Seasons Theme Park." This project aims to revitalize the Gyeongbuk region's economy and reverse population decline, contributing to Sustainable Development Goal 11: "Sustainable Cities and Communities."This study uses a comparative case study methodology to analyze the Bu-Ul-Gyeong Megacity initiative and Kawaba Village. Data collection involved a review of policy documents and academic literature for the former and fieldwork, including interviews and observations, for the latter. The key participants included local government officials and employees in Kawaba Village. Insights from Kawaba were applied to design the "Gyeongbuk Four Seasons Theme Park," which integrates successful elements from Kawaba's model while addressing the shortcomings of the Bu-Ul-Gyeong initiative.The Bu-Ul-Gyeong initiative failed because of a lack of economic revitalization planning, insufficient community engagement, and poor cooperation between governments. Kawaba village succeeded in establishing partnerships, fostering local enterprises, and maintaining effective government communication. These factors are critical in overcoming challenges in regional development.This study proposes the "Gyeongbuk Four Seasons Theme Park," a rotating, seasonal attraction across four cities, emphasizing local specialties and resident participation. This project aims to increase population inflow and establish sustainable agricultural enterprises, contributing to the economic revitalization of the Gyeongbuk region.

Analysis of wave characteristics near the pilot station

As one of the primary services ports provide, pilotage services aim to ensure the safe passage of vessels when entering and leaving the port. This study uses Taichung Port, located in the central part of the Taiwan Strait, as an example to analyze the impact of monsoon characteristics on wave conditions at pilot boarding points and to highlight their crucial role in safeguarding pilot boarding safety. By analyzing data from the ADCP (Acoustic Doppler Current Profiler) station north of the port’s northern breakwater and the Taichung buoy located southwest of the port, compare wave height distributions at the boarding point. The research addresses the impact of current and planned expansions, including constructing a new LNG receiving terminal with extended breakwaters, on wave dynamics and pilot operations. The study demonstrates that data from multiple sources—such as ADCP and buoy measurements—helps mitigate issues caused by missing data from specific stations. The analysis shows that numerical values differ slightly, while wave height trends at the boarding point are similar under current and expanded port conditions. The study concludes that the proposed expansion will likely affect wave diffraction patterns but will enhance the predictability and safety of boarding operations by reducing uncertainties associated with single measurement stations. Overall, the results of this study can enhance the understanding of marine meteorological information, improve the safety of pilot boarding operations, and thereby increase the efficiency and safety of port operations.

Factors that Affect Pilot Response Times to Alerts: Findings From a Literature Review and Aviation Safety Reporting System (ASRS) Reports

Factors affecting the time it takes a human to respond to an alert may include alerting system design, operator characteristics such as age or experience, or the operating environment. Using the aviation domain as one example, this variety of factors makes it difficult to specify what “acceptable” pilot response times are, as one cannot assign a value that will be consistent across systems, people, and situations. Further, characteristics of the pilot population, operations, and flight deck technologies change over time, so that average pilot response times derived in the past may not represent accurately expected response times for pilots flying modern aircraft. This paper compiles the findings from both a literature review and a survey of NASA Aviation Safety Reporting System (ASRS) reports, documenting that the confluence of factors affecting pilot responses to alerts results in response times that are often longer and more variable than might otherwise be expected.

Learnings from up-scaling CO2 capture: Challenges and experiences with pilot work

Large-scale reduction of greenhouse gasses is necessary to abate the climate crisis, for which technological development will pave the way. Advancing research from academia to industry is crucial for technological progress. Pilot scale studies are the intermediate step from bench to industry. New challenges arise during technology upscaling, many of which have not been previously described in the literature. This article provides a guide of the do's and don'ts to researchers venturing into pilot work. The learnings and experiences gained by working with pilot-scale CO2 capture plant are presented and discussed. This work outlines the process challenges encountered during the commissioning and operation of a CO2 capture pilot using 30 wt% MEA and with a capacity to capture one tonne CO2/day from flue gas. Conducting pilot work in industrial facilities and outside controlled lab environments comes with unexpected problems. The issues faced during our pilot work are presented along with troubleshooting strategies and possible solutions. This work can aid researchers in identifying and rectifying operational challenges and conducting successful pilot campaigns.

Screening the Performance of a Reverse Osmosis Pilot-Scale Process That Treats Blended Feedwater Containing a Nanofiltration Concentrate and Brackish Groundwater.

A two-stage pilot plant study has been completed that evaluated the performance of a reverse osmosis (RO) membrane process for the treatment of feedwater that consisted of a blend of a nanofiltration (NF) concentrate and brackish groundwater. Membrane performance was assessed by monitoring the process operation, collecting water quality data, and documenting the blended feedwater's impact on fouling due to microbiological or organic means, plugging, and scaling, or their combination. Fluorescence and biological activity reaction tests were used to identify the types of organics and microorganisms present in the blended feedwater. Additionally, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were used to analyze suspended matter that collected on the surfaces of cartridge filters used in the pilot's pretreatment system. SEM and EDS were also used to evaluate solids collected on the surfaces of 0.45 µm silver filter pads after filtering known volumes of NF concentrate and RO feedwater blends. Water quality analyses confirmed that the blended feedwater contained little to no dissolved oxygen, and a significant amount of particulate matter was absent from the blended feedwater as defined by silt density index and turbidity measurements. However, water quality results suggested that the presence of sulfate, sulfide, iron, anaerobic bacteria, and humic acid organics likely contributed to the formation of pyrite observed on some of the membrane surfaces autopsied at the conclusion of pilot operations. It was determined that first-stage membrane productivity was impacted by the location of cartridge filter pretreatment; however, second-stage productivity was maintained with no observed flux decline during the entire pilot operation's timeline. Study results indicated that the operation of an RO process treating a blend of an NF concentrate and brackish groundwater could maintain a sustainable and productive operation that provided a practical minimum liquid discharge process operation for the NF concentrate, while the dilution of RO feedwater salinity would lower overall production costs.

Cognitive load assessment for cadet pilots in simulated aircraft environment-pilot study

PurposeThis study aims to propose a methodology aimed at understanding the cognitive and physiological processes inherent in cadet pilot operations. Through analyzing responses from two cadet pilots with varied experience levels across diverse simulation scenarios, the research uses descriptive statistics, t-test, one-way ANOVA and percentage change analysis to explore crucial variables, including heart rate (HR), heart rate variability (HRV) and respiratory rate (RR).Design/methodology/approachThe investigation meticulously examines HR, HRV and RR under circumstances encompassing resting state, visual flight rules and instrument flight rules with engine failure. Pilots undergo comprehensive analyses employing statistical techniques and visual representations to comprehend cognitive loads and physiological adaptations.FindingsSignificant disparities emerge between the two pilots, elucidating the profound impact of experience on cognitive and physiological outcomes. Novice cadet pilots exhibit heightened variability during scenario transitions, while experienced cadet pilot demonstrate controlled responses, indicative of adaptability. Visual flight simulations evoke distinct responses, whereas instrument-based scenarios, particularly those simulating emergencies, lead to pronounced physiological changes.Practical implicationsThe findings of this research hold practical significance in introducing the proposed novel methodology for monitoring Cadet pilots to refine pilot training simulation protocols and enhance aviation safety by illuminating the interplay between experience levels and scenario complexities.Originality/valueThis study proposes a novel methodology for investigating cognitive and physiological responses in pilot operations, mainly investigating cadet pilots’ vital parameters through diverse analytical methods and an exploration of scenario-specific demands.

Physical start-up of the Nuclear Subcritical Facility “Neutron Source” of NSC KIPT

National Science Center “Kharkov Institute of Physics and Technology” jointly with the Argonne National Laboratory developed, designed and constructed the Subcritical Nuclear Facility “Neutron source based on the subcritical assembly driven by electron linear accelerator”. The article presents the main results obtained during the physical start-up of the plant, the program of which involved the staged loading of fuel assemblies into the core with subsequent measurements of its neutron-physical characteristics. In total, 37 fuel assemblies of WWR-M2 type were loaded into the facility core. The values o f the effective neutron multiplication factor keff and reactivity ρ of the subcritical assembly were measured after each loading step using the multiplication and area ratio methods. In addition, the neutron flux to electron current ratio method was tested for on-line reactivity monitoring. The investigations were performed when the accelerator was operated with 100 MeV electron beam energy, 2.7 μs electron pulse duration, 20 Hz pulse repetition rate and ≤ 40 mA beam pulse current. The obtained results were analyzed in terms of ensuring the facility nuclear safety at the next stage of its commissioning which is the pilot operation.

Design and validation of the evolved version of the tactical separation system

Purpose The small air transport (SAT) domain is gaining increasing interest over the past decade, based on its perspective relevance in enabling efficient travel over a regional range, by exploiting small airports and fixed wing aircraft with up to 19 seats (EASA CS-23 category). To support its wider adoption, it is needed to enable single pilot operations. Design/methodology/approach An integrated mission management system (IMMS) has been designed and implemented, able to automatically optimize the aircraft path by considering trajectory optimization needs. It takes into account both traffic scenario and weather actual and forecasted condition and is also able to select best destination airport, should pilot incapacitation occur during flight. As part of the IMMS, dedicated evolved tactical separation system (Evo-TSS) has been designed to provide elaboration of both surrounding and far located traffic and subsequent traffic clustering, to support the trajectory planning/re-planning by the IMMS. Findings The Clean Sky 2-funded project COAST (Cost Optimized Avionics SysTem) successfully designed and validated through flight demonstrations relevant technologies enabling affordable cockpit and avionics and supporting single pilot operations for SAT vehicles. These technologies include the TSS in its baseline and evolved versions, included in the IMMS. Originality/value This paper describes the TSS baseline version and the basic aspects of the Evo-TSS design. It is aimed to outline the implementation of the Evo-TSS dedicated software in Matlab/Simulink environment, the planned laboratory validation campaign and the results of the validation exercises in fast-time Matlab/Simulink environment, which were successfully concluded in 2023.

여성 결혼이민자 대상 건강문해력 향상용 특수 한국어교육 과정 설계 및 운영에 관한 연구

This study examines the design and operation of special Korean language program to promote health literacy during the Korean language education course for female marriage immigrants at the N-si Family Center in Korea. And the purpose is to suggest ways to improve the program based on the results of pilot operation and pre- and post-evaluation. 'Special Korean language program related to health' is based on a demand survey conducted by Cho, Hajin and Kim, Charmyee (2023) and is designed to fit the framework of the Ministry of Gender Equality and Family's Marriage Immigrant Capacity Building Support Project. To measure changes in female marriage immigrants' self-health awareness and improvement in health literacy according to the program, pre- and post-evaluation was conducted using FLI-FMI and HLAS, tools that have been verified in previous studies. As a result of statistical analysis using SPSS29, FLI-FMI showed that there was a significant change in the difference and improvement in health literacy of female marriage immigrants in the 12th session of the curriculum, but HLAS showed that the education did not affect the learner's self-reported health literacy so it does not appear to have had a significant impact on changing perceptions. However, when comprehensively considering the number of participants and the content of the satisfaction survey, it is difficult to be certain of the effectiveness of learning based on simple statistical figures or to determine that there has been no change in learners' self-perception of health literacy. As a follow-up study, it will be necessary to supplement areas that are difficult to uncover through quantitative research alone through qualitative research using methods such as in-depth interviews or FGI. This study is meaningful in that it presents a practical curriculum to improve immigrants' health rights and health literacy and verifies its effectiveness, but it has the limitation that it is difficult to generalize the content. We hope that by using this study as basic research, various studies on improving health literacy will be conducted.

Monitoring the State of the Operator of the Ergatic System in UAV Control Tasks

An important aspect of the application of unmanned systems is the reliability and safety of controlling these devices. An innovative approach has been proposed to improve the efficiency of the pilot operator and the reliability of the automated control system. It includes the development of an algorithm for determining the pilot’s condition based on heart rate analysis. This algorithm helps to assess the condition of the pilot and his ability to control the drone. Another important element of the proposed approach is the algorithm for selecting the control mode of the automated control system for unmanned aerial vehicles, which takes into account information about the functional state of the pilot operator. This algorithm allows the system to automatically switch between different operating modes depending on the condition of the pilot, ensuring optimal control and minimizing the risks of human error. An integrated approach to improving the reliability of the unmanned aerial vehicle control system allows not only improving the work of the pilot operator, but also ensuring the safer and more efficient operation of automated systems.

A Team Cognition Measurement Method for Single Pilot Operations Human-Machine System Design

Team cognition is an important indicator to reflect the trend of single pilot operation (SPO) human-machine system team performance. How to measure team cognition to explore different function allocation decisions before the implementation of prototypes or simulators has become a significant step in the early SPO human-machine system design. Therefore, this article proposed a team cognition measurement method based on the social network analysis (SNA) method, namely cognitive social network analysis (CSNA). The CSNA method firstly identified the nodes, edge directions and channel resource values of each task; secondly calculated the cognitive demands of each task based on multiple resource theory; thirdly summed the cognitive demands of the same task to construct the association matrix; and finally calculated global and nodal network metrics. The results of the study showed that (1) the CSNA method could identify design flaws of the initial SPO human-machine system; (2) the CSNA method increased the ability to identify the changes in both the cognitive demands of tasks and the overall workloads of human agents compared to the SNA method; (3) the CSNA method could help researchers make reasonable design suggestions to improve the team performance of the redesigned SPO human-machine system. The above results not only verify the feasibility of the CSNA method, but also show that the CSNA method is superior to the current SNA method.

Dispersion evaluation of hydrogen sulfide inclusion in a cryogenic distillation pilot plant

AbstractA risk analysis simulation was completed for a cryogenic distillation (Cryo‐D) pilot operation processing a natural gas feed stream containing H2S. This study placed significant H2S concentration inside the Cryo‐D and evaluated its dispersion after a simulated leak within the pilot plant. Sensitivity analysis using an in‐house process simulation identified the operating conditions that caused the highest surroundings H2S concentration. A computational fluid dynamic (CFD) dispersion simulation assessed H2S leakage at the bottom column section and its effects on operators. A case with 60 bar column pressure, −30°C inlet temperature and 10% H2S input gas had the highest mass flow rate of 4.74 kg/h H2S through a leak. Leaked H2S covers 50% of the building within 60 s. Within 120 s, H2S accumulates toward the column bottom. At 120 s, most operators are exposed to above 1000 ppm H2S, which may cause fatalities instantly. Recommendations include enhancing the ventilation of the building by installing ventilation near the base of the cryogenic column in order to lessen the exposure concentration. In conclusion, H2S leakage from an indoor Cryo‐D pilot plant can cause catastrophic consequences due to its rapid dispersion and accumulation throughout the building.

프랑스의 수학 중등교사 양성과정 및 임용시험 분석

On January 5, 2023, the Ministry of Education announced plans for the introduction and pilot operation of a graduate school system specializing in education for fostering graduate-level teachers, as well as plans for the practice semester. In this study, the purpose of this study was to find implications by analyzing the teacher training system in France, which has a policy very similar to that currently planned by the Ministry of Education. First, we analyze the overall composition and characteristics of the MEEF master's course, a teacher training course in France, are examined, and the curriculum, subjects, credits, and field practice of INSPÉ Toulouse University, and the characteristics of French mathematics. Using that teacher training courses are analyzed. In addition, the overall structure of CAPES, the national Teacher Qualification Test in France, was reviewed, and past questions from the 2022 school year were analyzed to derive implications for the Korean employment system and employment examination.

Analysis and Simulation of Lateral Collision Risk under Paired Approach

The paired approach can improve the efficiency of closely spaced parallel runways. Calculating the probability and frequency of horizontal overlap is an indispensable step when evaluating the horizontal collision risk of the paired approach. As the generation of horizontal overlap probability is closely related to horizontal position error, we propose a calculation method of horizontal overlap probability based on position error from the perspective of pilot operation. First, according to the principle of flight mechanics, the attitude adjustment model is established for the horizontal direction of the approach process, and the pilot’s operation model for various position errors is based on the concept of the stochastic process. This attitude adjustment model can replicates the process of the pilot operating the steering column to change the aircraft’s attitude. When combined with the pilot’s operation model, it is possible to simulate the position errors generated during the approach process. Building on this, the horizontal overlapping conditions of two aircraft are analyzed to simulate the horizontal overlap process in the paired approach. The duration and instances of overlap counted and the ratio between these results and the total running time give the overlap probability and frequency. Multiple simulations in MATLAB reveal that higher pilot operating accuracy shortens the time for the aircraft to align with the course, whereas lower accuracy leads to unstable horizontal position errors. Furthermore, the horizontal overlap in paired approaches primarily occurs at the beginning of the procedure, and enhancing the pilot’s operating accuracy does not significantly affect the probability and frequency of horizontal overlap.

MTL-PIE: A multi-task learning based drone pilot identification and operation evaluation scheme

As one of the most promising industries, consumer-grade Unmanned Aerial Vehicles (UAVs), also known as drones, have changed our lives. Although significant progress in drones has been made, adversary impersonation attacks still pose severe risks to flying drones. In addition, authorized pilot miss-operations also has become a critical factor leading to drone flight accidents. To validate the pilot's legal status and remind the authorized pilot about their miss-operations, we propose a multi-task learning-based drone pilot identification and operation evaluation scheme named MTL-PIE. Specifically, we first present qualitative and quantitative guidelines to evaluate pilot operation proficiency. Then, we design a pilot identification module and an operation evaluation module to resist pilot impersonation attacks and assess pilot operation proficiency, respectively. Finally, we propose a soft-parameter sharing mechanism to transfer knowledge between two modules and a dynamic weight-adjusting algorithm to prevent domain-dominant problems. Numerical results show that MTL-PIE can verify pilot legal status with an accuracy of 95.36% (outperforming our previous work with a margin of 2%-3%) and act as assessors to evaluate pilot operation proficiency with an accuracy of 94.47%. Note that MTL-PIE needs only 35 ms to verify pilot legal status and assess pilot operation proficiency; it has great potential to reduce drone flight accidents.

5G NR launching in Greece: Preliminary in situ and monitoring network measurements of electromagnetic fields exposure levels at rooftops.

In Greece, 5G New Radio (NR) has started launching in the end of 2020, at the 3400-3800 MHz (FR1) frequency band. Focusing on 117 Base Stations (BSs) which were already equipped with 5G NR antennas, in situ broadband and frequency selective measurements have been conducted at minimum three points of interest, at adjacent rooftops (when accessible). The points have been selected according to the sweeping method and the electric field strength (E) value has been stored on the selected worst-case scenario point. Spectrum analysis was conducted in the FR1, for the allocated spectrum that corresponds to each mobile communication provider, in order to get preliminary results concerning the contribution of the 5G NR emissions in the general public exposure levels. The vast majority of the in situ measurements has been conducted in urban environments from the beginning of 2021 until the mid of 2022, since in Greece 5G NR services launching started from the big cities. Additionally, a 5G NR BS, installed in a suburban environment (in the city of Kalamata) is thoroughly investigated during its pilot and regular operation, based on broadband and frequency selective measurements data derived by the National Observatory of Electromagnetic Fields (NOEF) monitoring sensor network. Insitu measurement data within the 5G NR frequency range are verified via the NOEF's output. The 5G NR contribution to the total E-field levels is assessed in time, from pilot to regular operation of the BS. In all cases, compliance with the reference levels for general public exposure is affirmed.

Establishment of dose monitoring system for dentistry

Along with the advancement of dental x-ray equipment, the use of diagnostic radiation has been rapidly increasing. Accordingly, concerns about radiation exposure are increasing. In particular, imaging examinations inthe dental field have a low individual radiation exposure. However, the frequency of the examinations is high.Also, due to the abundant usage of dental CBCT, concerns has been widely spread across the users and the nation. In response to this, there has been a need to establish a dose monitoring system for dental x-ray equipment.Therefore, the purpose of this study was to establish of a national dose monitoring system for imaging examinations in the dentistry. For the system establishment, the structure of intraoral, panoramic radiography and CBCT system was surveyed and the integrated data collection plan was prepared. Based on this, dose monitoring system, which can be utilized for nation-wide, was established and a pilot operation was conducted. In orderto continuously expand the system in the future, system supplements should be confirmed through gatheringexpert opinions.