bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of methods to form discrete zone in converters with multi-zone control of output parameters
Authors:   Tomsk State University of Control Systems and Radioelectronics (TUSUR), Avdzeiko Vladimir I. , Drozdova Anastasiya A. ,   Tomsk State University of Control Systems and Radioelectronics (TUSUR), Rulevskiy Viktor M. ,   Tomsk State University of Control Systems and Radioelectronics (TUSUR), Lyapunov Danil Yu ,   Tomsk State University of Control Systems and Radioelectronics (TUSUR)
Published: December 2024

Power supplies operating in the key mode of operation create a pulsed character of current consumption, leading to current and voltage ripples in the supply network and at the input of connected consumers. Conventional converter circuits are based on single-cycle converters or inverters with full range of output parameters regulation. Power elements of these converters are calculated for the full power of the converted electrical energy, and at the output of the regulated inverter a pulse voltage is formed, the amplitude and duration of which have a significant impact on the parameters of input and output filters. One of the efficient ways to reduce this influence is the method of multi-zone regulation is based on the division of the regulation range into several zones. In the article, a comparative analysis of the given variants of converters is carried out in terms of the current ripple spread of inductors and voltage on filter capacitors, of the current value of keys, as well as of the conditions of intermittent currents occurrence depending on the number of zones. The advantage of dividing the control range into zones with uniform quantisation step is proved, as well as the efficiency of these schemes in comparison with converters with full and incomplete modulation depth of the regulated parameter. The analysis of schemes variants with uniform and non-uniform quantisation steps is carried out on the models built with the help of MATLAB Simulink software.
Ultra-wideband electro-optical modulator with an integrated laser
Authors:   Laboratory of Integrated Optics and Radiophotonics (LIOR), Tomsk State University of Control Systems and Radioelectronics (TUSUR), Yunusov Igor V , Arykov Vadim S. ,   LIOR TUSUR, Stepanenko Michael V ,   LIOR TUSUR, Zhuk Gregory G. ,   LIOR TUSUR, Argunov Dmitry P. ,   LIOR TUSUR, Sheinberger Anna A ,   LIOR TUSUR
Published: December 2024

The paper presents the results of upgrading the design of a microassembly of an ultra-wideband electro-optical modulator with an integrated laser diode with a radiation wavelength of 1.31 μm for its use in an optical attachment to analyze the parameters of components of high-speed fiber-optic systems used for transmitting analog and digital signals. This product can also be used to modulate a digital signal at an optical carrier wavelength of 1.31 μm. As a result of upgrading the design of the microassembly, it was possible to increase its maximum frequency to 40 GHz and expand the range of operating frequencies (100 kHz – 27 GHz). The maximum power of optical radiation of the integrated laser of the microassembly exceeds 10 mW at a consumption current of 90 mA
Modern Chinese Culture as an Object of Media Reflections
Authors: Ouyang R.
Published: December 2024

The article is devoted to the study of the reflection of modern Chinese culture in media discourse and analyzes how media contribute to the cross-cultural adaptation of modern Chinese culture, which combines tradition and modernity in the process of communication using the media to convey a narrative, and achieves cultural adaptation in accordance with international aesthetics through integration into other cultures. This paper examines the relationship between cross-media storytelling and cultural adaptation, and questions how contemporary Chinese films, television series, and music exemplify media narratives that contribute to cultural adaptation. The study concluded that although Chinese culture is actively being incorporated into the global media landscape through various platforms, there are numerous challenges associated with cultural differences that may hinder the full understanding and acceptability of these products outside of China. The results may be useful for extrapolating the experience to the promotion of other cultures, including contemporary Russian cinema, music and art, which face similar difficulties in adapting to the perception of international audience, when it is important to take into account cultural characteristics and build a universal narrative that can find a response in other countries.
Convergence in the Regional Media: features of the Internet content of Yakut newspapers
Authors: Borisova N. M. , Borisova M. T.
Published: December 2024

The manuscript is devoted to identifying the characteristics and possibilities of convergent journalism in the regional media based on the analysis of the specifics of Yakut newspapers, their websites and Internet platforms. The appeal to this topic is justified by the fact that today the convergent editorial office is considered one of the developing models of mass media, since the need of users for information using various devices and communication channels is more relevant in the modern media sphere. The purpose of the article is to identify the characteristic features of the Internet content of “Kyym” – national Yakut newspaper, and “Sakha sire” – the official newspaper and website of the Government of Yakutia. Daily updating of media texts on the websites edersaas.ru, sakha-sire.ru and kyym.ru is based on a clear thematic structure that creates a holistic picture of the local living, whereas Internet platforms, such as social networks and instant messengers, have transformed the content, allowing people to open up, express thoughts, exchange opinions and comment. This helps the user to come to some personal conclusions and see the information picture in dynamics. The conducted research is aimed at developing the study of national Internet resources and, in particular, digital media and media texts in Sakha language.
INVESTIGATING CHOLAGOGUE AND CHOLERETIC ACTIVITY OF Peumus boldus
Authors: S. F. Silva Raphael , H. Faria Marcus Vinícius , F. S. D. de Almeida Joyce , C. C. França Tanos
Published: December 2024

This study aimed to utilize molecular modeling and theoretical chemistry methods to contribute to the elucidation of the mechanism of action of boldine, an alkaloid present in the Peumus boldo plant. Boldo holds a special place in traditional medicinal practices throughout Brazil and has been officially recognized as medicinal plant. It is traditionally indicated for choleretic and cholagogue effects, among other digestive disorders. Literature has provided experimental evidence demonstrating that boldine can bind to the farnesoid X receptor, a key player in the production and excretion of bile. Our in silico study revealed that boldine exhibits stable non-bonded interactions like those calculated for the endogenous ligand chenodeoxycholic acid and the synthetic agonist colifexor, supporting what has been experimentally observed in the literature. The packages MOPAC, AutoDock, GROMACS and g_mmpbsa were employed for structural optimization, molecular docking, molecular dynamics and bond energy calculations respectively. This study demonstrates the application of theoretical chemistry and molecular modeling methods, including molecular docking, molecular dynamics, and molecular mechanics Poisson-Boltzmann surface area (MM-PBSA), in identifying molecular targets and providing insights into the bioactivities of natural products.
Mechanisms for removing phosphorus species through sequential coagulation using inorganic coagulants and organic polymers
Authors: Koltsova Evelina , Smotraiev Roman , Nehrii Anastasiia , Zhekeev Malik , Ratnaweera Harsha
Published: December 2024

The need for stringent phosphorus removal from domestic wastewater is increasing to mitigate eutrophication, while efficient phosphate reuse is critical due to the global phosphate crisis. Combining aluminum sulfate (ALS) with high molecular weight organic polymers achieved 95–99% removal of particles, turbidity, and phosphates, reducing ALS usage by 40%. We propose mechanisms to explain the enhanced treatment efficiency. Particle and turbidity removal is more influenced by polymer charge density than molecular weight, while orthophosphate (OP) removal is linked to a change in zeta potential from negative to positive, allowing additional OP binding through complex formation with hydrolysis products and polymers. Enhanced phospholipid (PL) removal likely results from adsorption and neutralization of micelle PL charges by intermediate positively charged aluminum hydroxyphosphate ions. Higher PL removal with low ALS doses is attributed to a two-stage dosing process that optimizes coagulant and polymer dosages. The combined removal of OP and PL improves phosphorus bioavailability, increasing the sludge's fertilizer value.
Wiersze noworoczne Jarosława Iwaszkiewicza. Od poezji okolicznościowej do gatunku prywatnego
Authors: Romaniuk Radosław
Published: December 2024

The author analyzes the poems by Jarosław Iwaszkiewicz written at the turn of the year, either the last day of the passing year or the first day of the new year. He distinguishes between the trend of occasional “New Year’s poems” and the trend of private poems. The latter includes texts whose manuscripts, preserved in the writer’s archive, bear a date capturing the moment of the turn of the year. The circumstances of their creation, common motifs, and the ritualistic nature of their composition, emphasized by the writer, suggest that he treated those texts as a private genre practiced by him. The texts attempts to characterize this genre.
Product and the Internet of Things (IoT)
Authors: Yomboi Jonas , Majeed Mohammed , Asiedu Esther
Published: December 2024

The implementation of a marketing mix is vital in order to enhance partner
satisfaction and ensure the consistent delivery of high-quality products in sufficient
quantities. The tool in question is utilized to assess the degree of achievement in
marketing endeavors, encompassing elements such as product. Yet less is done
conceptually on how IoTs affect product management. Hence, this chapter reviews the
extant literature on the aspects of the product that IoT impacts. The primary objective
of IoT technologies for enterprises is to address market needs and demands while also
generating demand through the provision of a distinctive and satisfactory customer
experience. The benefits include customer engagement, product innovation, exposing
the utilization of the product, quality control, quality of products and services, product
style, the provision of after-sales service, the product line length within the realm of
IoTs commerce, various stock-keeping units (SKUS), the fulfillment of customer
demand, and the breadth of firms’ portfolio. Consequently, it is anticipated that this
technological advancement will contribute to a prosperous period for brands.
Place/Distribution and the Internet of Things
Authors: Majeed Mohammed , Sakara Ahmed , Yahaya Alhassan , Fuseini Mohammed Abdul-Basit
Published: December 2024

The Internet of Things (IoT) is a remarkable technological advancement that
facilitates the seamless integration of computing devices for the purpose of transmitting
data across a network, eliminating the need for direct human-to-human or human-t-
-computer engagements. This chapter intends to look at how IoT impacts the
distribution of firms’ products. The implementation of IoT-based advanced
distribution, materials handling equipment, and sensors in warehouses has the potential
to significantly transform operations, resulting in increased efficiency, costeffectiveness, and productivity. The integration of the Internet of Things (IoT) into
warehouse operations encompasses the real-time monitoring of equipment, goods,
pallets, and personnel, as well as the measurement of their performance.
Internet of Things in Marketing: The Customer Experience
Authors: Shani Salifu , Majeed Mohammed , Shukla Parag , Shamurailatpam Sofia Devi
Published: December 2024

Undoubtedly, the Internet of Things (IoT) possesses the capacity to enhance
customer experiences. The exponential growth of technology has had a profound
influence on various aspects of enterprises. In addition, the Internet of Things (IoT)
facilitates the exchange of data, facilitates the control of inventory, enhances security
measures, and contributes to heightened levels of efficiency and production. The
purpose of the chapter is to review the literature to understand how IoT is used in
marketing to affect customer experience. IoT has the capability to revolutionize current
business models by facilitating novel interactions and establishing new partnerships
between organizations and their customers. Adopting the end-customer standpoint
offers guidance and illuminates potential avenues for the creation of services that are
embraced and financially supported by both enterprises and customers. This will
facilitate the development of novel and inventive services, thereby fundamentally
transforming operational practices across several sectors in the future. The
contemporary customer base is undergoing a transformation, wherein they are
increasingly accustomed to immediate accessibility. Consequently, they now anticipate
that their consumption and purchasing encounters will be characterized by immediacy,
distinctiveness, and emotional resonance. Therefore, it is imperative for organizations
to gain a comprehensive understanding of the fundamental shifts in consumer habits in
order to develop appropriate and pleasurable customer experiences across both online
and offline channels. In the preceding study, the focus was on the emergence of a novel
type of consumer, with particular attention given to the evolution of their social
standing, requirements, and their involvement in the brand or company's interactions.
CT AND MR IMAGING OF BENIGN AND MALIGNANT MENINGIOMA: HOW TO DIFFERENTIATE?
Authors: Faturrohmaniah Ari , Yueniwati Yuyun
Published: December 2024

Introduction: Typical meningiomas are benign tumors, while atypical and anaplastic ones tend to be malignant. Typical meningiomas are mostly detected in women who are 40 years of age, presenting with minimal peritumoral edema and homogeneous enhancement. Atypical meningiomas increased in men who are more than 60 years of age, exhibiting severe peritumoral edema, heterogeneous enhancement, large sizes, and low ADC values. Most anaplastic meningioma cases occur, but rarely, in children, which are highly invasive, growing rapidly, destroying calvarial bone, and have a giant intracranial tumor that invades the extracranial soft tissue and forms a cutaneous mass.
Case Presentation: A 37-, 39-, and 15-year-old female patients were presented. There was blurred vision in the right eye, difficulties in communicating, and headaches for 2 years in the first case; vertigo and headaches for a year in the second case; and headaches, vertigo, and blurred vision for 2 years in the last case, growing more severe in the recent month. Based on MRI, the first patient had an extra-axial homogeneous mass with minimal peritumoral edema, homogeneous enhancement consistent with the appearance of typical falx meningioma; the second case had an extra-axial heterogeneous mass with necrotic component, severe peritumoral edema, and heterogeneous enhancement on the right temporoparietal region consistent with the appearance atypical meningioma; the last case had an extra-axial heterogeneous giant mass with necrotic component, severe peritumoral edema, and heterogeneous enhancement on right frontal region based on CT and MRI. CTA showed increased internal vascularity inside and adjacent to the lesion, and the bone window showed erosion and thinning of the calvarial bone, consistent with the appearance of anaplastic falx meningioma of the malignant characteristics.
Conclusion: Age, gender, tumor size, peritumoral edema severity, degree of enhancement, restriction on DWI, vascularity, and hyperostosis or erosion of bone can distinguish between benign and malignant meningioma.
Keywords: typical meningioma, atypical meningioma, anaplastic meningioma.
Perkembangan Embrio Ayam Kampung Unggul Balitbangtan (KUB) Dengan In-Ovo Feeding Menggunakan L-Arginin
Authors: Pranatasari Dewi , Zakariya Abu Zaenal
Published: December 2024

Tujuan dari penelitian ini adalah untuk mengetahui perkembangan embrio ayam KUB dengan in-ovo feeding menggunakan L-Arginin. Penelitian ini dilaksanakan pada bulan Agustus hingga November 2023 di CV Sanjaya Desa Trasan, Kecamatan Bandongan dan di Laboratorium Unggas dan Aneka Ternak, Politeknik Pembangunan Pertanian Yogyakarta – Magelang. Penelitian ini menggunakan rancangan percobaan Rancangan Acak Lengkap (RAL) dengan lima perlakuan dan lima pengulangan dengan per kelompok perlakuan lima butir telur. Data yang diperoleh dianalisis menggunakan analysis of variance (ANOVA). Apabila perlakuan memperlihatkan pengaruh yang nyata maka dilanjutkan dengan uji Duncan’s multiple range test (DMRT).  Penelitian ini menggunakan 300 butir telur fertil ayam KUB dengan perlakuan injeksi L-Arginin yaitu P0- sebagai kontrol negatif (tanpa injeksi), P0+ sebagai kontrol positif (injeksi NaCl Fisiologis 0,9%), P1 pemberian L-Arginin 1,5% (1,5 gram per 100 ml NaCl Fisiologis 0,9%), P2 pemberian L-Arginin 2% (2 gram per 100 ml NaCl Fisiologis 0,9%), dan P3 pemberian L- Arginin 2,5% (2,5 gram per 100 ml NaCl Fisiologis 0,9%). Injeksi dilakukan pada hari ke 10 inkubasi dengan diinjeksi 0,5 ml larutan in-ovo feeding.  Variabel dalam penelitian ini adalah penyusutan bobot telur, bobot embrio, panjang sayap, panjang kaki, dan lingkar dada. Penelitian ini memberikan hasil yang signifikan (P<0,05) terhadap bobot embrio tetapi tidak signifikan (P>0,05) pada penyusutan bobot telur, panjang sayap, panjang kaki, dan lingkar dada. Kesimpulan dalam penelitian adalah injeksi L-Arginin sebanyak 2,5% dapat meningkatkan bobot embrio.
Detection of Antibiotic Residues in Beef and Beef Liver in Gorontalo City
Authors: Taha Siswatiana Rahim , Datau Fahria , Rokhayati Umbang Arif , Unggango Yenti
Published: December 2024

This study aims to determine the presence of antibiotic residues in beef and beef liver sold at the slaughterhouse (TPH) in Gorontalo City. The total of the samples are 34 samples, there are 20 samples of beef and 14 samples of beef liver in Gorontalo City. Testing of beef and beef liver samples using agar diffusion method. The presence of antibiotic residues can be seen from the formation of an inhibitory zones around the disc paper. The results of the study found that in sampling from the slaughterhouses in Gorontalo City, samples of beef liver from TPH Andalas gave a diameter of inhibitory zones about 11.37 mm. Beef liver samples from Padebuolo TPH gave an inhibitory zones about 8.12 mm, while beef liver samples taken from TPH Moudu gave a diameter of inhibitory zones about 15.39 mm and 10.99 mm. Then the second sample, the samples of beef from TPH Andalas gave a diameter of inhibitory zones about 12.68 mm and 9.95 mm. Beef samples from Padebuolo TPH gave inhibitory zones about 9.12 mm and 12.44 mm, while beef samples taken from TPH Moudu gave a diameter of inhibitory zones about 11.69 mm and 8.42 mm. As for TPH Biau, beef samples gave inhibitory zones about 9.86 mm and 8.11 mm. The results at each time of collecting the samples showed that most of the samples contained antibiotic residues with a weak category with the average diameter about 12.3 mm. The conclusion from the laboratory tests on 26 samples, they are 14 samples of beef and 12 samples of beef liver which were analyzed qualitatively using methanol solution showed that some of the samples were identified as antibotic residues, which were shown by the formation of inhibitory zones in each sample.
Digital therapeutics and telemedicine for benign paroxysmal positional vertigo and other vestibular disorders: a review
Authors: Choi Eun-Hyeok , Kim Hyo-Jung , Kim Ji-Soo
Published: December 2024

In the recent wave of digital transformation, digital therapeutics and telemedicine are changing the concepts in the management of benign paroxysmal positional vertigo and other vestibular disorders. These technologies provide accessible and cost-effective solutions amid the ongoing digital revolution in healthcare. This review article covers the recently advanced digital therapeutics for vestibular disorders that include questionnaire- or artificial intelligence-based diagnostic algorithms, telemedicine and self-application of canalith repositioning therapy, wearable devices for monitoring of eye movements during the attacks of dizziness/vertigo, and metaverse for vestibular rehabilitation. Integration of these digital technologies would improve diagnostic accuracy and treatment efficacy, reduce the economic burden associated with vestibular disorders, and promise a revolutionary shift in patient care towards personalized medicine.
The New Parishes of Sierra Morena: From the Historical Map to HGIS
Authors: Castillo Martínez Juan Manuel , Delgado Barrado José Miguel , Partal Ortega Laura
Published: December 2024

The use of digital tools from the field of geographic information technologies holds significant interest for the reconstruction of historical territories based on corroborated information from primary sources, available in various formats and media. The development of alphanumeric geo-historical databases with spatial representation forms the foundation for what we know as HGIS, which stands for Historical Geographic Information System. This paper presents the results of developing a database with spatial representation and the consequent analysis of the resulting alphanumeric and cartographic data within the context of the so-called Superintendency of Sierra Morena and Andalusia during the reign of Charles III of Bourbon, including its precedents, development, and territorial and jurisdictional consequences.
Metodologia para um SIG Histórico de Portugal (1758-2001): o projecto Atlas, Cartografia Histórica
Authors: Alves Daniel
Published: December 2024

Neste artigo, apresentamos e discutimos a metodologia e o impacto historiográfico do projecto Atlas: Cartografia Histórica. O Atlas está disponível online desde 2001, sendo uma ferramenta de apoio à investigação em História Contemporânea de Portugal. Disponibiliza dados sobre a evolução dos limites administrativos de Portugal Continental entre 1758 e 2001, sobre os arquipélagos dos Açores e da Madeira, entre 1849 e 2001. Publica ainda fontes históricas georreferenciadas como as Memórias Paroquiais de 1758, os censos populacionais de 1801 e 1849, bem como uma série sobre a evolução populacional na Península Ibérica entre 1911 e 2001. A concepção e coordenação do projecto foi de Luís Espinha da Silveira, entre 1993 e 2021, tendo participado no projecto muitos jovens investigadores, antes e depois da sua disponibilização online. A sua metodologia recorre a bases de dados relacionais e a sistemas de informação geográfica para reconstituir os limites administrativos históricos de Portugal, em momentos chave, partindo sempre do nível básico da paróquia/freguesia. O Atlas, Cartografia Histórica é actualmente um sistema de gestão de dados históricos geocodificados que permite a publicação e análise de qualquer tipologia de fontes e dados históricos, tendo sido usado em múltiplos trabalhos de investigação ao longo das últimas três décadas.
Impact of Psychological Resilience on the Fear of Pain and Activity Recovery in Postsurgical Patients: Observational Cohort Study
Authors: Luo Yang , Li Sisi , Feng Lijuan , Zheng Junyi , Peng Chunfen , Bao Lihong
Published: December 2024

Background

The fear of pain (FOP) and fear avoidance belief (FAB) play a crucial role in the occurrence and development of chronic pain. However, the dynamics of these factors in postsurgical pain appear to differ, with the FOP often learned from others rather than directly caused by painful experiences. Psychological resilience refers to an individual’s capacity to adapt effectively to adversity, challenges, and threats, and may play a significant role in overcoming the FOP and avoidance behavior.

Objective

The aim of this study was to investigate the role of psychological resilience in overcoming the FOP and avoidance behavior among surgical patients undergoing lung surgery.

Methods

Participants were recruited at the Wuhan Union Hospital. Psychological resilience was measured using the Connor-Davidson Resilience Scale. The FOP was assessed using the simplified Chinese version of the Fear of Pain-9 items. The FAB was measured using the Physical Activity subscale of the Fear-Avoidance Beliefs Questionnaire. Activity recovery was assessed through questions related to social activities and household responsibilities. The adaptive least absolute shrinkage and selection operator (Lasso) regression analysis under nested cross-validation was used to identify key factors affecting postoperative FOP and activity recovery.

Results

A total of 144 participants were included in the final analysis. The results showed that preoperative FOP (coefficient=8.620) and FAB (coefficient=8.560) were mainly positively correlated with postoperative FOP, while psychological resilience (coefficient=−5.822) and age (coefficient=−2.853) were negatively correlated with it. These average R2 of these models was 73% (SD 6%). Psychological resilience was the most important factor in predicting activity recovery, and these models obtained an average accuracy of 0.820 (SD 0.024) and an average area under the curve of 0.926 (SD 0.044).

Conclusions

Psychological resilience was negatively associated with the postoperative FOP and positively with activity recovery in patients who underwent lung surgery. Patients with higher resilience are more likely to cope effectively with postsurgical pain and recover activities sooner. These findings highlight the importance of assessing and potentially enhancing psychological resilience in the perioperative period to improve postoperative outcomes.
Implications of Public Disclosure of Personal Information in a Mobile Alert App for People Living With Dementia Who Go Missing: Qualitative Descriptive Study
Authors: Adekoya Adebusola , Daum Christine , Neubauer Noelannah , Miguel-Cruz Antonio , Liu Lili
Published: December 2024

Background

People living with dementia are at risk of getting lost and going missing due to memory loss, confusion, and disorientation. Missing person incidents involving people living with dementia are increasing. Alert systems such as Community ASAP can promote community engagement in locating missing persons with dementia and aid in search and rescue efforts. However, the implications of public disclosure of personal information such as name, age, sex, and physical description within such alert systems have yet to be explored.

Objective

This study aimed to identify and discuss the implications of public disclosure of personal information in Community ASAP for people living with dementia at risk of going missing.

Methods

This study used a qualitative descriptive research design drawing from naturalistic inquiry. A total of 19 participants including people living with dementia, care partners, first responders, and service providers were recruited from Ontario, Alberta, and British Columbia, Canada. Semistructured interviews were used to explore participants’ perspectives on the perceived implications of the release of personal information when using Community ASAP. NVivo (version 12) was used to manage data, and conventional content analysis was conducted to identify key themes of the implications of public disclosure of personal information in Community ASAP.

Results

In total, 10/19 (53%) of the participants were women and 9/19 (47%) were men. Of the 19 participants, 3 (16%) were people living with dementia, 5 (26%) were care partners, 4 (21%) were first responders, and 7 (37%) were service providers. In total, 4 key themes were identified as implications of public disclosure of personal information in Community ASAP: right to autonomy, safety versus privacy, informed and knowledgeable consent, and stigmatization. Participants discussed how the public disclosure of personal information in Community ASAP could undermine a person’s choice not to be found and contribute to stigmatization. Participants emphasized a need to balance safety and privacy concerns. Informed and knowledgeable consent is important when using an alert system to locate missing persons with dementia.

Conclusions

Community ASAP can promote community engagement in locating missing persons with dementia. However, the public disclosure of personal information in alert systems has implications. Users’ right to autonomy, a balance between safety and privacy, informed and knowledgeable consent, and risks of stigmatization are perceived impacts of disclosure of personal information in alert systems.
The Impact of Human-Robot Collaboration Levels on Postural Stability During Working Tasks Performed While Standing: Experimental Study
Authors: Bibbo Daniele , Corvini Giovanni , Schmid Maurizio , Ranaldi Simone , Conforto Silvia
Published: December 2024

Background

The integration of collaborative robots (cobots) in industrial settings has the potential to enhance worker safety and efficiency by improving postural control and reducing biomechanical risk. Understanding the specific impacts of varying levels of human-robot collaboration on these factors is crucial for optimizing cobot use.

Objective

This study aims to investigate the biomechanical effects of different levels of human-robot collaboration on postural stability and control during simulated working tasks.

Methods

A total of 14 participants performed simulated cashier working activities under 4 different collaboration modalities, with increasing levels of cobot assistance: full (Fu), half robot touch (HRT), half robot (HRb), and full robot (FRb). Center of pressure trajectories were extracted from 2 force plates’ data to calculate 4 posturography parameters—mean distance (MDIST), mean velocity (MVELO), 95% confidence ellipse area (AREA-CE), and sway area (AREA-SW)—which were analyzed to assess the impact of cobot intervention on postural control.

Results

Nonparametric tests showed significance in the effect of the collaboration modalities on the 4 analyzed parameters. Post hoc tests revealed that FRb modality led to the greatest enhancement in postural stability, with a reduction in MDIST (4.2, SD 1.3 cm in Fu vs 1.6, SD 0.5 cm in FRb) and MVELO (16.3, SD 5.2 cm/s in Fu vs 7.9, SD 1.1 cm/s in FRb). AREA-CE and AREA-SW also decreased significantly with higher levels of cobot assistance (AREA-CE: 134, SD 91 cm² in Fu vs 22, SD 12 cm² in FRb; AREA-SW: 16.2, SD 8.4 cm²/s in Fu vs 4.0, SD 1.6 cm²/s in FRb). Complete assistance of the cobot significantly reduced interindividual variability of all center of pressure parameters. In FRb modality, as compared with all other conditions, removing the weight of the object during loading or unloading phases caused a significant decrease in all parameter values.

Conclusions

Increased cobot assistance significantly enhances postural stability and reduces biomechanical load on workers during simulated tasks. Full assistance from cobots, in particular, minimizes postural displacements, indicating more consistent postural control improvements across individuals. However, high levels of cobot intervention also reduced the natural variation in how people balanced themselves. This could potentially lead to discomfort in the long run. Midlevel cobot assistance modalities can thus be considered as a good compromise in reducing biomechanical risks associated with postural stability at the same time granting a satisfactory level of user control.
Green Synthesis of Bio-Active Silver Nanoparticlesfrom Insect Gall Extracts as Potent Anti-microbial Agents
Authors:   Department of Chemistry, Government Science College, Songadh, Gujarat, India., Gangorde M.C.
Published: December 2024

Synthesis of nanoparticles of metals using natural plant extracts has gained muchattention these days. Here silver nano particles are produced by facile method of
biogenic synthesis using extracts of insect gall which is a common infection onZizipusjijube plant. The aqueous extracts of the dried galls were used for thesynthesis of silver nanoparticles (AgNPs) which were then screened for their
antimicrobial activity. The morphology, size and functional groups present inAgNPs was evaluated using electron microscopy and Fourier Transform InfraredSpectroscopy- FTIR analysis. Also, UV–Vis spectroscopy confirmed the formationof particles. X-ray diffraction analysis-XRD. The diffractogram revealed thecharacteristics of particles. The mean diameters of the nanoparticles were between20 nm, and they had moderate antimicrobial activity against gram positive andgram-negative bacteria than gall extract alone.
The (in)congruence effect of co-speech gestures on language processing
Authors: Mustapić Malenica Emilija
Published: December 2024

The aim of this paper is to explore the phenomenon of co–speech gestures in language processing.
As gestures have often been analysed predominantly within the paradigm of the rhetorical tradition, this paper will try to portray their psycholinguistic dimension, which has become increasingly
important within the domain of linguistic research. Through use of experimental psycholinguistic
methodology and the priming paradigm, I have compared the speed and accuracy of processing of
linguistic utterances occurring only in the audio–visual modality accompanied by congruent and
incongruent co–speech gestures. The results of the experiment confirmed the hypothesis that incongruence of co–speech gestures has an inhibitory effect on speed and accuracy of processing of
the multimodal linguistic message. The participants’ reaction times were slower and accuracy rates
lower in conditions in which the semantic congruence between the verbal and the gestural modality
was nullified, and the same effect was noticed in both the native language and the first foreign language. This result speaks in favour of the claim that the verbal and gestural representational systems are interconnected and constitute a holistic picture of the mental process.
Methodology of land management works geodetic support with dual-frequency-GNSS-module smartphones
Authors: Shevchuk A.A.
Published: December 2024

The author presents a methodology for geodetic support of land management works using smartphones equipped with dual-frequency GNSS modules. The importance of using mobile devices in the context of modern digital transformation is described, highlighting their economic efficiency and cost reduction. The relevance of the study is confirmed by the analysis of positioning accuracy achieved with various gadget models. The results of field studies conducted under conditions of the Moscow oblast are presented, where the precision of data obtained using mobile devices and traditional GNSS equipment was assessed. Conclusions are made on the practical applicability of the proposed methodology for solving land management tasks and its compliance with regulatory requirements for the exactness of determining the boundaries of land plots is confirmed. The offered technique is recommended for use in geodetic and land management services, as well as in agriculture and forestry
Image filtering at constructing archaeological sites thermal images’ mosaic
Authors: Zlobina A.G. , Rubleva E.A. , Zhurbin I.V.
Published: December 2024

An algorithm for preprocessing thermal imaging data from an unmanned aerial vehicle obtained by a non-radiometric camera with an uncooled bolometer is proposed. The problem of interpretation of survey data is considered. It is caused by significant differences in the exposure of adjacent frames. Because of this, there are stitching boundaries at forming a composite image. In addition, natural objects (river, wetlands, vegetation, etc.) have extreme thermal properties, which do not enable identifying less pronounced anomalies of the archaeological site occupation layer’s soil features. It is shown that the noted problems can be solved by preprocessing the original images, including noise removal and brightness normalization. Due to the described filtration, a 'seamless' mosaic of thermal radiation of the survey site, the medieval archaeological site Kushmanskoye III settlement, was constructed. This algorithm was applied to four original images. As a result of processing, the area of extremely 'warm' segments caused by natural objects significantly reduced (in total – from 44 to 10 %). This allowed not only to 'save' thermal anomalies associated with soil features of the occupation layer, but also to increase the proportion of these segments in the transformed image (in total – from 33 to 72%). In addition, the segments of the 'intermediate' classes emphasize the features of the thermal distribution. It is established that, noise removal and brightness normalization of the original images helps decreasing the influence of natural objects with extreme thermal properties and, due to this, to detail the distribution trends of the humus layer of the archaeological site and the surrounding area. The results are consistent with the data of interdisciplinary studies (geophysics, soil drilling and archeology), as well as with the landscape position of the identified thermal anomalies and survey data in the visible range (orthophotoplan)
OBJETIVIDADE E SUBJETIVIDADE EM FREIRE E BAUMAN
Authors: Fernandes Maciel Jr Percy , Lambach Marcelo , Rosa Alba Niezwida Nancy
Published: December 2024

Este artigo busca na análise da relação entre os conceitos de subjetividade e objetividade enquanto dimensões constitutivas das identidades dos indivíduos, compreensão sobre os efeitos da mudança no sistema de controle capitalista em sua forma atual. Usa como referência o pensamento do filósofo e educador brasileiro Paulo Freire sobre sua interpretação da relação entre opressor e oprimido como condicionante da dialética entre subjetividade e objetividade, e o pensamento do sociólogo polonês Zygmunt Bauman sobre as formas com as quais o sistema capitalista se apropria dos meios tecnológicos de produção e consumo para atualizar a estrutura social de controle que garante a manutenção de sua contradição essencial, a saber, de que a busca pela maximização do acúmulo de valor diminui cada vez mais sua própria fonte de geração, o trabalho abstrato. Foi possível identificar na dialética freiriana e na ambivalência baumaniana, elementos teóricos de consenso que podem sustentar uma proposta de ação pedagógica para o desenvolvimento da reflexão crítica associada à ação transformadora, enquanto possibilidade de resgate da subjetividade cooptada pela lógica do consumismo.
NOS LUGARES EDUCATIVOS PRODUZIDOS PELA RELIGIÃO, O CATECISMO COMO UMA BALIZA
Authors: Silva Wilney Fernando
Published: December 2024

O presente trabalho tem como objetivo investigar a influência dos preceitos católicos no Grupo Escolar João Alcântara de Porteirinha/MG durante o período de 1938 a 1962. Indagaremos como as orientações papais foram postas em prática no cotidiano escolar. O investimento na educação foi uma poderosa estratégia no que diz respeito à expansão e à manutenção do poder da Igreja Católica. O trabalho avança ao mostrar como o Catecismo e os compêndios impressos foram integrados ao cotidiano escolar. Como método de investigação, propomos a Pesquisa Bibliográfica realizada em livros, artigos, dissertações e teses. Além disso, empregamos a Pesquisa Documental que inclui a análise das fontes que circulavam na época, como: livros de atas de reuniões de docentes, jornais locais, leis e decretos do executivo local, documentos pontifícios e episcopais, manuscritos, álbum de fotografias, livros de atas das associações religiosas e seus manuais, livros do tombo paroquial. Conclui-se que as crianças e a mocidade em Porteirinha/MG, durante o período estudado, foram arregimentadas no Catecismo da Igreja. Os instrumentos utilizados para isso foram, sobretudo, a ação conjugada da imprensa e da escola. Esta frente de ação também nutriu o povo de instrução religiosa por meio da presença das aulas de Catecismo e do Ensino Religioso. Quanto à imprensa, os jornais, os panfletos e os livros passaram a ser não apenas um aparato religioso, mas objetos da cultura religiosa.
Perspectivas e interacciones entre el mundo físico y virtual para los nuevos retos del desarrollo socioeconómico
Authors: Barrera Ortegón Andrea del Pilar , Ávila García Bibiana Del Carmen , Palacio Gaviria Bibiana Patricia , Reyes Fontalvo Carlos Alberto , Pérez Pacheco Camilo Andrés , Trejos Moncayo Carlos Rubén , Valencia Flórez Catherine , Vargas Quintero Cristian Alberto , Cabrera Muñoz Dayra Ibeth , Mejía Álvarez Delvis , Martínez Santos Didier Luisinho , Molano Soto Diego Fernando , Rosado Vanegas Elda Dariana , Hernández Lache Elías , Madariaga Suárez Enilsa , Pinzón Candelario Fanny Matilde , Pulido Bohórquez Gabriel , Medina Ricaurte Germán Fernando , Catherinne Gilma , Castañeda Gilma Catherinne , Giraldo Vargas Guillermo , Paz Jairo Andrés , Fandiño Isaza Jesús Rafael , Muñoz Rojas John Harold , Bustamante Cano John Jairo , Valderrama Fernández Jonny Mauricio , Bello López Julián Felipe , Castillo Garrido Julieth , Manchego Palza Liliana , Arregocés Vanegas Marelbis , Romero Torres Mariano Esteban , Avendaño Avendaño Marilú , Avila Pérez Mario Luis , Quesada Barragán Naryi Xiomara , Celín Giraldo Natalie , Serna Porras Nelson Augusto , Gómez Pedro , Valverde Gómez Oscar Alexander , Gómez Sabogal Pedro , Gamero de la Espriella Pedro Juan , Rodríguez Sebastián , Pitre Redondo Remedios Catalina , González Yolanda
Published: December 2024

En este libro “Perspectivas e interacciones entre el mundo físico y virtual para los nuevos retos del desarrollo socioeconómico” se presentan capítulos resultados de investigaciones realizadas por docentes investigadores y estudiantes de semilleros de investigación que han indagado sobre emprendimiento digital, mercadeo, gestión y desarrollo organizacional, infraestructura logística, marketing, implicaciones socioeconómicas, innovación tecnológica como parte productiva, social y económica dentro de las organizaciones y en los diferentes contextos regionales, profundizando en temáticas como la gestión empresarial, sociedades modernas, finanzas, donde algunos utilizan la prospectiva y diferentes modelos como complemento de la planeación estratégica para plantear posibles soluciones a las necesidades o problemáticas que se presentan a nivel local, nacional e internacional
Prevalence of Refractive Error and Associated Risk Factors in School-Age Children in Nepal: A Cross-sectional Study
Authors: Bhandari Keshav Raj , Pachhai Deepak Bahadur , Pant Chet Raj , Jamarkattel Ashish
Published: December 2024

Introduction: The most common visual disorder in school age children is refractive error globally. The present study aimed to know the prevalence of refractive errors and explore the factors associated with the refractive error in school-age children in Palpa district of western part of Nepal. Methods: All the school children were selected between age groups 5 to 18 years from four schools of Palpa by multistage sampling method. After the preliminary examination on visual acuity, the children were referred to the Department of Ophthalmology, Lumbini Medical College, Palpa for confirmation of the refractive errors. Results: In school-age children the prevalence of refractive error was 9% of which myopia was the most common (4.05%). Females (about 12%) were more likely to have refractive errors than males (about 7%). The refractive error of males was 0.106 (right eye) and 0.564 (left eye) times more likely than females. The refractive errors were statistically found more common in Dalit students (14.6%) than Brahmin/Chhetri (about 12%) and Janajati (7.6%). The prevalence of refractive errors among students using smart phone/ laptop (about 12%) was higher than those not using (8.36%). Conclusion: Sex, ethnicity, and near-work activity like using the smart device were the covariates of developing refractive error on the eye. Myopia was more among those students who were using smartphones/laptops. Near activities stress on eyes of the children and might be one of the causes of developing myopia.
Comparative Study on Effects of 2% Lidocaine Hydrochloride with Adrenaline (1:200000) on Blood Pressure Among Controlled Hypertensive and Non-hypertensive Patients During Dental Anesthesia
Authors: Tuladhar Lujaw Ratna , Budhathoki Meen Bahadur , Bhattarai Anjali , Bimb Kushal , Acharya Nikhil , Tuladhar Eans Tara
Published: December 2024

Introduction: Local anesthetic used for dental extraction is 2% lidocaine hydrochloride with adrenaline (1:200000). Lidocaine is cardiac depressant and adrenaline is cardiac stimulant; it decreases or increases blood pressure respectively. Methods: A total of 100 patients (50 controlled hypertensive and 50 non-hypertensive) were selected. The study was conducted over a period of 14 months from January 2020 to February 2021. Blood pressure was measured for patients who were planned for dental extraction by auscultatory method. Following that, 1.5-3 ml (depending upon the nerve block) 2% lidocaine with adrenaline (1:200000) was injected using a 3ml syringe (26 Gauge). Blood pressure was re-recorded after 10 minutes from the time of injection. Visual analog scale pain score was obtained during administration of local anesthesia. Paired t-test was applied to compare blood pressure change before and after administration of local anesthesia in controlled hypertensive and non-hypertensive patients. Results: There was a statistically significant increase in both systolic and diastolic blood pressure in non-hypertensive patients (p = 0.008, p = 0.017). This, however, was not the case with controlled hypertensive patients. There was statistically significant increase in systolic blood pressure (p < 0.001). Pain on injection (50% in non-hypertensive and 48% in controlled hypertensive patients) was the only adverse drug reaction that was reported in both groups. Conclusion: 2% lidocaine hydrochloride with adrenaline (1:200000) increased systolic but not diastolic blood pressure in controlled hypertensive patients
Morphological Variation of Circle of Willis in Nepali Population: A 3D Time-of-Flight Magnetic Resonance Angiography Based Study
Authors: Sharma Rupesh , Pokharel Sona , Neupane Phanendra , Subedi Rituraj
Published: December 2024

Introduction: The Circle of Willis (COW) is an anatomic ring of vessels located at the base of the brain connecting the anterior and posterior circulation by uniting the internal carotid and vertebrobasilar systems to maintain adequate cerebral perfusion. The importance of detailed information of the COW morphology and integrity in any patient cannot be overemphasized, especially for neurophysicians, neurosurgeons, and interventional neuroradiologists who are considering intervention to the intracranial arteries. This study was conducted to study the variation of COW among the Nepalese population and compare the results with those of other nationalities. Methods: It was a prospective cross-sectional study performed using a 1.5 Tesla MRI machine. Complete anatomical assessment of the COW was done. The anterior and posterior components of COW were defined as per the standard literature and evaluated in detail. Results: A total of 118 patients were studied during the period out of which 75 (63.6%) were males and 43 (36.4%) were females. A morphologically normal COW configuration was found only in 55 (46.6%) cases whereas a variant configuration was present in 63 (53.4%) cases. The most common variation was noted in the posterior communicating artery (PCOM) which was present in 42 (67%) cases. The most common single variation in abnormal COW configuration was absent right PCOM. Conclusion: The morphologic variation of the COW is more common than the normal textbook configuration in the Nepalese population, PCOM being the most commonly involved vessel.