Large Room Research Articles

몽골 카라코룸의 네스토리우스파 기독교유적 연구

This paper examines the possibility that a complex architectural site, excavated by the Mongol-German joint research team from 2006 to 2009, located in the northern outskirts of Karakorum, may have been a Nestorian Christian church. The rectangular complex, surrounded by earthen-walls, can be divided into two phases based on the building's layout and overlapping architectural features. The initial structure within the complex had a unique configuration, with a large room at the front directly connected to a smaller room at the back, situated centrally within the walled area. Unlike traditional Mongolian architecture, which typically faces south, this building faced east, and it is notable for having an altar in the smaller rear room. Artifacts found at the site include fragments of a cross, characteristic of Nestorian Christianity, and bronze artifacts resembling candlesticks popular in medieval Europe. These findings strongly suggest that the site was a Nestorian Christian church during the Mongol Empire. The site's location in the northern outskirts of Karakorum aligns with the description of a Nestorian Christian church in William of Rubruck’s book. Additionally, the basic rectangular layout with a niche(apse) at the end containing an altar, as found in Central Asian Nestorian churches, further supports this identification. Radiocarbon dating indicates that the church was constructed in the early 13th century. The excavation revealed that the church was destroyed by fire. However, after the church's destruction, three tiled buildings with a different layout were immediately erected on the site. The structure and artifacts suggest that these buildings were likely a Buddhist temple. Additionally, a significant number of cattle horns were found inside the side buildings, suggesting that specific ritual activities took place at this location.

Artificial intelligence: how have Learning Developers engaged?

The ALDinHE Artificial Intelligence (AI) Community of Practice (CoP) was established in the summer of 2023. It has an international membership of over 200 Learning Developers. The CoP meets monthly to discuss an AI-related topic. Since its inception, topics have included organisational approaches to AI, AI in assessment, maths and statistics, and the use of AI in Learning Development tutorials. The group is keen to create an opportunity to share current projects, approaches, and thinking. This wildcard session replicated a world café-style event on a smaller scale. It required a large room. Tables were hosted by colleagues from Abertay University, Bournemouth University, De Montfort University, the University of Manchester, the University of Northampton, and Spurgeon’s College. Each host led a 15-minute session, sharing their AI-related project with delegates seated around the table, which included a short presentation followed by an opportunity for delegates to share their views and exchange ideas. After 15 minutes, the delegates moved to another table. Within the hour, the delegates rotated around three tables. It was hoped that delegates would attend the session to expand their understanding of AI. Delegates who use AI in their day-to-day work had an opportunity to share their experiences, while delegates who were less experienced could expand their understanding and discuss with their peers the challenges and opportunities that AI brings to Learning Development.

Interactive Simulation of Nonpharmaceutical Interventions of Airborne Disease Transmission in Office Settings

The COVID-19 pandemic has caused major disruptions to workplace safety and productivity. A browser-based interactive disease transmission simulation was developed to enable managers and individuals (agents) to optimize safe office work activities during pandemic conditions. The application provides a user interface to evaluate the impact of non-pharmaceutical interventions (NPIs) policies on airborne disease exposure based on agents’ meeting patterns and room properties. Exposure is empirically calibrated using CO2 as a proxy for viral aerosol dispersion. For the building studied, the major findings are that the cubicles during low occupancy produce unexpectedly high exposure, upgrading meetings to larger rooms reduces total average exposure by 44%, and when all meetings are conducted in large rooms, a 79% exposure reduction is realized.

Functions for noise reduction in acoustic standards: evaluating reverberation time, mean absorption coefficient, and a novel approach

Contemporary European acoustic standards utilize dimensioning functions based on either reverberation time or mean absorption coefficient. For spaces with the primary goal of noise reduction, achieving consistent overall sound pressure level (SPL) reduction, regardless of room sizes and shapes is evidently desirable. The conditions under which reverberation time and mean absorption coefficient approaches align with the objective of consistent SPL reduction are analyzed. Generally, both approaches fall short of achieving consistency in case of varying ground surface or room shape, i.e. length, width and height relations. Additionally, in large rooms, constant or room height-dependent reverberation time functions may lead to extensive absorption areas, complicating the installation of acoustical treatments and degrading their economic efficiency. A novel dimensioning function, providing consistent SPL reduction independently of room size and shape, is derived based on diffuse field theory. The novel function is multiplied by a linear function of room height and length, to alleviate accuracy limitations of diffuse field theory in case of varying room shapes. Finally, simulations systematically varying room sizes and shapes demonstrate that the novel dimensioning function significantly outperforms existing approaches in achieving consistent SPL reduction.

Rotation Equivariant Proximal Operator for Deep Unfolding Methods in Image Restoration.

The deep unfolding approach has attracted significant attention in computer vision tasks, which well connects conventional image processing modeling manners with more recent deep learning techniques. Specifically, by establishing a direct correspondence between algorithm operators at each implementation step and network modules within each layer, one can rationally construct an almost "white box" network architecture with high interpretability. In this architecture, only the predefined component of the proximal operator, known as a proximal network, needs manual configuration, enabling the network to automatically extract intrinsic image priors in a data-driven manner. In current deep unfolding methods, such a proximal network is generally designed as a CNN architecture, whose necessity has been proven by a recent theory. That is, CNN structure substantially delivers the translational symmetry image prior, which is the most universally possessed structural prior across various types of images. However, standard CNN-based proximal networks have essential limitations in capturing the rotation symmetry prior, another universal structural prior underlying general images. This leaves a large room for further performance improvement in deep unfolding approaches. To address this issue, this study makes efforts to suggest a high-accuracy rotation equivariant proximal network that effectively embeds rotation symmetry priors into the deep unfolding framework. Especially, we deduce, for the first time, the theoretical equivariant error for such a designed proximal network with arbitrary layers under arbitrary rotation degrees. This analysis should be the most refined theoretical conclusion for such error evaluation to date and is also indispensable for supporting the rationale behind such networks with intrinsic interpretability requirements. Through experimental validation on different vision tasks, including blind image super-resolution, medical image reconstruction, and image de-raining, the proposed method is validated to be capable of directly replacing the proximal network in current deep unfolding architecture and readily enhancing their state-of-the-art performance. This indicates its potential usability in general vision tasks.

Looking at the Audial Quality of the Auditorium in the Campus Area: Auditorium of the Faculty of Economics and Business Education, Universitas Pendidikan Indonesia

Abstract An auditorium, a fairly large room, can do many things, especially in higher education. It can help both academic and non-academic activities. The purpose of this study is to evaluate the noise level that can affect the hearing comfort of people using the auditorium room in the campus area. The main purpose of this study is to determine the quality of sound that is considered comfortable in the Auditorium Room from the influence of noise generated by motorized vehicles and tools that are in the process of construction around Building A of the Faculty of Economics and Business Education. The prominent noise comes from passing vehicles and the sound of carpentry tools that are building or repairing buildings around it. To determine the sound quality in the auditorium, this research uses a case study with quantitative descriptive analysis. To collect data, this study used the Decibel X Sound Meter application. The noise level around the Auditorium outbuildings was analyzed with NoiseTools and IBANA-Calc. Based on the Decree of the Minister of Environment Number KEP-48/MENLH/11/1996 on environmental noise. The simulation results of Noise Quality at the Auditorium of the Faculty of Economics and Business Education showed results at -8 dB which means very good and comfortable.

Влияние физических упражнений на подготовку студентов к спортивным бальным танцам

Sports ballroom dancing is a group of paired dances that are divided into two directions, “Latin” and standard, and, as a rule, were performed at balls held in large rooms covered with parquet. Dances are divided into elite (historikohousehold) and folk, characterized by several differences. Ballroom dances are paired, a man and a woman form a couple, as well as two women (“lady and lady”) and two men (“man and man”). In addition to doubles, there are single competitions “Solo Ladies”, where ladies perform dances without a partner. Ballroom dancing or dance sports has become very popular among young people in recent decades. Ballroom dancing has noticeably rejuvenated, attracting children, juniors and students to its ranks. Practicing sports and ballroom dancing requires development of all the muscles of the human body, the respiratory system, trains coordination and a sense of rhythm. Athletes, in addition to dancing, are actively engaged in special physical training, without which they will not be able to achieve high results.

Physical space of thirty pediatric intensive care units in the United States of America: a national survey.

The design of Pediatric Intensive Care Unit (PICU) rooms significantly impacts patient care and satisfaction. The aims were first, to describe the current physical space across PICUs in the USA, and second, to identify what proportion of PICUs are compliant with current guidelines. A descriptive cross-sectional survey was conducted, targeting division chiefs and medical directors of PICUs nationwide. The survey collected data on unit type, construction and renovation dates, room sizes, and available amenities. According to the Guidelines for Design and Construction of Hospitals, PICU rooms are recommended to be single rooms, at least 200 sq ft, have a window and a private bathroom. Data were anonymized and reported as median and interquartile ranges or frequencies and percentages. Thirty units responded. Among the respondents, 26 had general PICUs, 9 had cardiac ICUs, and 3 had intermediate care units, with some units containing multiple types of ICUs. The median annual admissions were 1,125, with a median occupancy rate of 78%. Twenty-three percent of units had at least one double room, and 3% had triple or quadruple rooms. The median room size was 265 sq ft (IQR 230; 304), the smallest room size was 220 sq ft (IQR 179; 275), and the largest single room size was 312 sq ft (IQR 273; 330). Thirty-seven percent of units had bathrooms in every room, while 80% had windows in every room. Additionally, 46% of units had dialysis capabilities in every room, and 7% had negative pressure capabilities in every room. The median building year was 2008 (IQR 2001;2014), with 36% of units having undergone at least one renovation. Larger rooms were associated with more recent build dates (p = 0.01). Only 30% of the PICUs met the guidelines for physical space. These compliant units were built at a median of 4 years ago (IQR 1; 8). This study highlights the variability in PICU room design and amenities across healthcare facilities. Many units still fall short of meeting the guidelines for room size, windows, and private bathrooms. Future research should investigate the relationship between room characteristics and patient outcomes to inform better design practices, with a goal of improving patient experiences and clinical outcomes.

Cross-Cultural Adaptation and Validation of the Listening Inventory for Education-Revised in Italian.

Listening difficulties may frequently occur in school settings, but so far there were no tools to identify them for both hearing and hearing-impaired Italian students. This study performed cross-cultural adaptation and validation of the Listening Inventory for Education-Revised for Italian students (LIFE-R-ITA). The study procedure followed the stages suggested by the Guidelines for the Process of Cross-cultural Adaptation of Self-Report Measures. For the content validation, six cochlear implanted students (8-18 years old) pre-tested the initial version. Whenever any situation did not occur in Italy, the item was adapted to more typical listening situations in Italy. The final version of LIFE-R-ITA was administered to a sample of 223 hearing students from different school settings and educational degrees in order to collect normative data. For the LIFE-R-ITA, hearing students showed an average score of 72.26% (SD = 11.93), reflecting some listening difficulties. The subscales (LIFE total, LIFE class, and LIFE social) indicated good internal consistency. All items were shown to be relevant. Most challenging situations happened when listening in large rooms, especially when other students made noise. LIFE social scores were significantly worse than those of LIFE class (p < 0.001). The present study provides cross-cultural adaptation and validation for the LIFE-R-ITA along with the normative data useful to interpret the results of students with hearing loss. The LIFE-R-ITA may support teachers and clinicians in assessing students' self-perception of listening at school. Such understanding may help students overcome their listening difficulties, by planning and selecting the most effective strategies among classroom interventions.

Comparative Analysis of Cooling Load Calculations: CLTD Method vs. Carrier HAP 5.01 Software for Hotel HVAC Design

This study examines the cooling load requirements of a hotel building by comparing two methodologies: the traditional Cooling Load Temperature Difference (CLTD) method and the Carrier Hourly Analysis Program (HAP) 5.01 software. The primary objective is to validate the accuracy and reliability of these methods in calculating cooling loads across different room types, from standard rooms to larger, more complex suites. The results show that the CLTD method consistently yields higher cooling load estimates, with discrepancies ranging from 3% to 14% compared to HAP 5.01 calculations. These differences are most significant in larger rooms, such as suites and owner’s suites, which have more extensive glass areas, higher occupancy, and more heat-generating equipment. The findings indicate that while the CLTD method is valuable for quick, preliminary estimates, the HAP 5.01 software provides a more precise and comprehensive analysis, taking into account hourly variations, equipment schedules, and other factors that impact cooling loads. This research highlights the need for careful selection of the appropriate calculation method to ensure the efficient design of HVAC systems, maximizing energy efficiency, and maintaining occupant comfort. The study concludes that for projects requiring high accuracy, particularly in complex or large spaces, dynamic simulation tools like HAP 5.01 are preferable. Detailed cooling load results and comparisons are provided in the supplementary documentation, offering further insights into the analysis and its implications for HVAC design.

PMSM Design for Elevators: Determination of the Basic Topology Affecting Performance

In recent years, with the increase in high-rise building construction, there has been a rise in demand for elevators. This demand has spurred mutual growth between the vertical transportation sector and high-rise building construction. Both sectors are improving technology, security, and comfort standards. Traditional elevator traction machines typically employ asynchronous motors coupled with geared reducers, despite their low energy efficiency and requirement for large machine rooms. However, with the proliferation of rare-earth magnet materials and advancements in driver technologies, the use of Permanent Magnet Synchronous Motors (PMSMs) in elevator traction machines has increased. PMSMs operate with direct drive, eliminating the need for reducers. High efficiency and passenger comfort are crucial parameters for elevator traction machines. This study focuses on identifying the fundamental topology that could influence the performance of PMSMs for gearless elevator machines. Factors such as stator materials, rotor structures, permanent magnets, winding configurations, slot/pole combinations, cogging torque and torque ripple have been examined to select suitable design topologies for elevator motors. Important topics such as the magnetic properties of grain-oriented silicon steel sheets used in stator construction, B-H curves, lamination forming and stacking factors have been addressed. Two different rotor topologies and magnet arrangements, namely internal and external, have been investigated in PMSM designs. Additionally, the use of four different magnet materials, namely AlNiCo, Ferrite, NdFeB, and SmCo have been compared for PMSM traction motors in elevators. Single-layer and double-layer winding configurations, distributed and concentrated winding configurations have been compared. Fractional slot/pole combinations, which directly affect the performance and comfort of PMSMs, have also been examined based on information obtained from the literature. Particularly, structures with high winding factors, such as 12/10, 12/14, 18/16, 18/20, 24/22, and 24/26 have been identified. Finally, studies on skewing to reduce cogging torque and torque ripple have been addressed.

Management of Teaching Space and Time: Evidence from Tertiary Institutions in Ghana

Overcrowding in classrooms is a common issue in tertiary institutions in Ghana. Proper management of teaching space and time is critical for maximising the use of available resources and stressful-free learning environment for students in tertiary institutions. This article aims to provide empirical evidence and practical recommendations for improving the management of teaching space and time in Ghana's tertiary institutions. The study is grounded in utilization theory, and adopted a descriptive survey design. The population for this study consists of 26 general-purpose lecture rooms available at a university in Ghana. Census Sampling was applied to select all the 26 general-purpose lecture rooms. The instruments used for data collection was an observation checklist. Quantitative results from the observation checklist were analysed using teaching space utilization formulas. The study revealed that general-purpose lecture rooms were underutilized in terms of time but were efficiently utilized in terms of space. The study also found that the lecture rooms have high utilization rates on Mondays and low utilization on Fridays. Additionally, morning sessions revealed efficient utilization, while afternoon and evening sessions were underutilized. The study recommends implementation of centralized timetabling and computerization of space allocation. Additionally, the study recommends for provision of a few more large general purpose lecture rooms to accommodate very large class sizes, which can also be partitioned effectively to accommodate small class sizes for efficient utilization of the lecture rooms.

Can science and technology resources co-evolve with high-tech industries? Empirical evidence from China

Based on the theories of synergetic and evolutionary economics, we build a theoretical model of the co-evolutionary mechanisms of the composite systems of science and technology resources and high-tech industries in China. According to the established index system of the composite systems, we calculated the steady-state solution of the co-evolve and drew the potential function curve of science and technology resources and high-tech industries in China during 2010–2022 using the Haken model. Our empirical results show that high-tech industries are the order parameter of co-evolve. During the sample period, there is a synergistic growth effect of two-way promotion between science and technology resources and high-tech industries in China. However, within the system, the positive feedback mechanism of science and technology resources to high-tech industries in China is not perfect, and the allocation of science and technology resources needs to be further optimized, with a low degree of system order and large room for improvement. In addition, the endowment of science and technology resources and the development degree of high-tech industries in China are different in the eight comprehensive economic zones, and their co-evolvement is different. Therefore, by combining the advantages and allocating the elements of regional science and technology resources, we can better leverage the comparative advantages of high-tech industries in China and improve the degree of co-evolve in the system.

Assessment and Spatio-Temporal Evolution of Marine Fisheries’ Carbon Sink Capacity in China’s Three Marine Economic Circles

With the increasing pressure of resource decline and environmental pollution faced by the green transformation of marine fisheries, marine fishery carbon sinks are an increasingly close link to national strategic interests and economic lifelines. It is, therefore, necessary to explore paths for the enhancement and development of the carbon sink capacity of marine fisheries. Based on the economic data of marine fisheries from 2002 to 2021, this paper measures the capacity and characteristics of marine fishery carbon sinks in provincial areas, applies the kernel density estimation method to depict the dynamic evolution of the distribution of absolute differences in marine fishery carbon sinks, and at the same time, identifies the factors influencing the spatial imbalance in the development of marine fishery carbon sinks as well as the spatial spillover effects. The results show the following: (1) From the total amount, the fishery carbon sink capacity of China’s three marine economic circles has fluctuated and increased over the past 20 years, with obvious differences among different circles, and the marine fishery carbon sink capacity of the eastern, northern, and southern marine economic circles has risen sequentially. This trend corresponds to the economic disparities among the three circles, demonstrating a transition from economic to industrial driving effects. (2) From the spatial point of view, the fishery carbon sink capacity shows a trend of increasing year by year, concentrating in the circles, and overflowing between the circles. (3) The results of a partial derivative test further show that among the main influencing factors of marine fishery carbon sinks, capital, labor, and market openness have direct positive effects on marine fishery carbon sinks, and the direct effect of innovation is the strongest, and the significance of the indirect effect of the three circles is weaker compared to the direct effect and total effect. As a result, the carbon sink of China’s marine fisheries has a large room for improvement, and in order to promote the high-quality development of China’s marine fisheries, it is still necessary to accelerate the circulation of resources within the marine economic circle, accelerate the research of fishery technology, actively develop the carbon sink fishery, and enhance the specialization of aquatic product processing.

Comprehensive evaluation of leaching toxicity of tailings in non-resource-based cities in Anhui Province based on entropy weight-clustering method

&lt;p&gt;Toxic components in tailings pose a severe threat to the ecosystem and human health and negatively affect tailings’ resource utilization. Therefore, using the entropy weight-clustering method, we evaluated the leaching toxicity based on tailings samples from non-resource cities in Anhui Province. The results show that, all the extracted tailings samples first passed the leaching toxicity test, but there is still a large room for improvement. Secondly, there are complex interrelationships among the 15 indicators measuring leaching toxicity. Thirdly, in the process of entropy weight method calculation, the top three indicators in terms of weight are Cu (17.65%), Ag (16.52%), and Be (8.66%). Finally, the Ward clustering results show that the toxicity scores of tailings in each mining area exhibit distinct hierarchical characteristics, and they can be divided into two major categories and three subcategories (Ⅰ-1, Ⅰ-2, Ⅱ), with the toxicity scores of category Ⅰ-1 significantly higher than the rest of the mining areas. These findings provide empirical evidence for targeted treatment of tailings resources.&lt;/p&gt;

A Financial Analysis and Valuation of Chevron Corporation

With the continuous development of the global economy, the demand for energy continues to grow, and the market size of oil and gas as an important source of energy continues to expand, and the growth potential of the oil and gas market in the future is still huge. As an internationally renowned energy company, Chevron occupies an important position in the global oil and gas market. Firstly, the financial indicator analysis method is used to compare the financial data in 2023 with the other three energy companies to obtain its financial strength with strong asset liquidity, high solvency and strong profitability. Secondly, from the aspects of profitability, development ability and valuation, it is concluded that Chevron has strong market competitiveness, large room for stock price growth, and greater investment opportunities. Finally, it is concluded that Chevron has a high investment value, but it still faces certain risks and challenges, and it is necessary to pay attention to the impact of international oil price fluctuations on the company's performance and should pay close attention to its risk factors and take corresponding measures to face it positively.

High-resolution global maps of yield potential with local relevance for targeted crop production improvement.

Identifying untapped opportunities for crop production improvement in current cropland is crucial to guide food availability interventions. Here we integrated an agronomically robust bottom-up approach with machine learning to generate global maps of yield potential of high resolution (ca. 1 km2 at the Equator) and accuracy for maize, wheat and rice. These maps serve as a robust reference to benchmark farmers' yields in the context of current cropping systems and water regimes and can help to identify areas with large room to increase crop yields.

Techno-economic modelling of a hydrogen-electrodialysis (HED) unit for the simultaneous production of freshwater and hydrogen

Green hydrogen has been proposed as the most promising future energy carrier, however, its cost is still higher than the grey hydrogen from steam reforming. Furthermore, there is an increasing freshwater demand which must be covered, and desalination is the most promising option to tackle this issue. The present work proposes a new technology named hydrogen electrodialysis (HED) able to produce simultaneously freshwater and a worthy amount of hydrogen. A conventional electrodialysis (ED) stack consists of a repetition of membranes and spacers sandwiched by two electrodes only, whose cathode can intrinsically guarantee a low hydrogen production. Conversely, the proposed innovative idea of HED is to insert additional shared electrodes in the cell package to enhance the hydrogen productivity, without changing the freshwater production. A suitable techno-economic model is developed and adopted to investigate a 1000 cell-pairs electrodialysis HED unit devoted to desalinating 5 g L−1 brackish water to 0.5 g L−1. Preliminary results show an attractive minimum levelized cost of hydrogen of 3.43 € kg−1H2, proving that there is a large room for future more-in-depth studies.

MedExpQA: Multilingual benchmarking of Large Language Models for Medical Question Answering

Large Language Models (LLMs) have the potential of facilitating the development of Artificial Intelligence technology to assist medical experts for interactive decision support. This potential has been illustrated by the state-of-the-art performance obtained by LLMs in Medical Question Answering, with striking results such as passing marks in licensing medical exams. However, while impressive, the required quality bar for medical applications remains far from being achieved. Currently, LLMs remain challenged by outdated knowledge and by their tendency to generate hallucinated content. Furthermore, most benchmarks to assess medical knowledge lack reference gold explanations which means that it is not possible to evaluate the reasoning of LLMs predictions. Finally, the situation is particularly grim if we consider benchmarking LLMs for languages other than English which remains, as far as we know, a totally neglected topic. In order to address these shortcomings, in this paper we present MedExpQA, the first multilingual benchmark based on medical exams to evaluate LLMs in Medical Question Answering. To the best of our knowledge, MedExpQA includes for the first time reference gold explanations, written by medical doctors, of the correct and incorrect options in the exams. Comprehensive multilingual experimentation using both the gold reference explanations and Retrieval Augmented Generation (RAG) approaches show that performance of LLMs, with best results around 75 accuracy for English, still has large room for improvement, especially for languages other than English, for which accuracy drops 10 points. Therefore, despite using state-of-the-art RAG methods, our results also demonstrate the difficulty of obtaining and integrating readily available medical knowledge that may positively impact results on downstream evaluations for Medical Question Answering. Data, code, and fine-tuned models will be made publicly available.11https://huggingface.co/datasets/HiTZ/MedExpQA.

ინოვაციური კონსტრუქციის მობილური კონდიციონერი

Mobile air conditioner is a portable device that is used to cool the air in rooms where it is not possible to install an air conditioner. It can be used in apartments, offices, hotel rooms, camps and other places. The basic principle of operation of mobile air conditioner is to take air from the air-conditioned room through the built-in fan, then the air passes through the filters and is cooled or heated in the built-in evaporator. The processed air is supplied back to the room through a flexible duct. One of the main advantages of mobile air conditioner is its portability. It can be easily moved from one room to another, and such air conditioner can also be taken to any address. Mobile air conditioner does not require complex installation and can be connected to a regular mains electricity supply. In addition, some mobile air conditioners may have a heating function during the cold season. However, mobile air conditioner has some disadvantages. It is usually not as efficient as air conditioner that requires installation (such as split type air conditioners), especially, in large rooms. It can also be noisy and take huge space in a room. It consumes more energy than built-in air conditioners, which can lead to higher electricity bills.