bluuebunny/crossref_metadata_2025 huggingface dataset:
From concept to instrument: The development and validation of the buddhist meditation experience questionnaire
Authors: Somarathne Sanduni , Lokupitiya Erandathie , Gunathunga Wasantha
Published: December 2024

In Sri Lanka, Buddhist meditation holds a significant cultural, spiritual, and historical importance. Despite the long tradition and widespread practice of meditation in the country, there has been a lack of formal, scientifically validated tools to measure and study the impacts and experiences of Buddhist meditation in a structured way. Buddhist Meditation Experience Questionnaire (BMEQ) presented through this paper addresses this void. The BMEQ development process involved an extensive review of extant literature, expert consultations, and the formulation of a set of items that addressed key aspects of meditation practice such as duration of meditation practice, regularity of meditation practice, meditation techniquesand positive lifestyle habaits (PLH) that could be cultivated through meditation practice. . The questionnaire was created using both closed-ended and open-ended questions to capture a wide range of experiences, from measurable outcomes to subjective insights. To ensure the validity and relevance of the tool, a panel of experts reviewed the questionnaire (2-rounds Delphi process), enabling a judgmental validation approach. The validated version was then piloted with 30 skilled meditators. The final version of BMEQ consisted with 4 sections. Internal consistency of the fourth section (about PLH) of the final version of BMEQ was assessed using Cronbach’s alpha (Cα). The final BMEQ included 20 major items, with 22 closed-end items in Section 4. At the conclusion of the second round of the Delphi process, the ratings for all items, except for one item, fell within the 7 to 9 range. The overall Cronbach’s alpha was 0.70, and the mean total score for was 85.23, with a standard deviation (SD) of 7.38. The BMEQ is not merely an academic tool but a catalyst for furthering the integration of meditation practices into modern research, health systems, and societal frameworks, ultimately enhancing both individual and collective well-being.
Transformational leadership: A poor fit for proactive employees in a quick-commerce context
Authors: Adnans Abdhy A. , Panjaitan Katherina , Hadiyani Sherry
Published: December 2024

Orientation: As quick-commerce emerges as an evolving extension within the broader e-commerce landscape, it requires a deeper understanding of how to effectively manage employees to sustain continuous innovation. Implementing appropriate leadership practices has been shown to promote the development of employees from varied backgrounds and personalities, thereby enhancing innovation and driving organisational success.Research purpose: This study explored how transformational leadership influences the relationship between employees with proactive personality and the frequencies of innovative work behaviour (IWB) within a quick-commerce organisation, offering insights for organisations to enhance team performance.Motivation for the study: Quick-commerce organisations present novel work processes and environments. This research examines how to effectively translate and implement appropriate leadership approaches that sustain IWB in these dynamic settings.Research approach/design and method: Online questionnaires were utilised for data collection involving 200 employees working at a quick-commerce organisation. This quantitative research approach utilised SEM-PLS (Structural Equation Modelling Partial Least Squares) to conduct moderation analysis on processed data.Main findings: The analysis indicated that proactive personality had a significant positive effect on IWB, whereas transformational leadership was found to negatively moderate the relationship between proactive personality and IWB.Practical/managerial implications: The transformational leadership approach is not well-suited for encouraging employees with proactive personalities to engage in innovative behaviour within a quick-commerce environment.Contribution/value-add: The study shows that transformational leadership is not necessarily the best leadership approach for stimulating IWB in a quick-commerce context, potentially opening the door for further exploration and discussion on this topic.
Enhanced pathogen identification among patients with clinically suspected meningitis
Authors: Moleleki Malefu , Nel Pieter , Matukane Siphiwe R. , Cloete Stephanie , Abrahams Zayaan , Wolter Nicole , Whitelaw Andrew C.
Published: December 2024

Background: Delayed or incorrect treatment of meningitis may result in adverse patient outcomes. However, laboratory testing in resource-limited settings is often limited to conventional diagnostic methods. We explored the utility of syndromic molecular assays for diagnosis.Objectives: We tested cerebrospinal fluid (CSF) specimens collected from patients with clinically suspected meningitis submitted to a tertiary hospital laboratory in January 2021 – May 2021. Primary microbiological analysis (culture, Gram stain and cytochemical analysis) was performed as part of routine testing.Method: Residual CSF specimens were tested using a bacterial triplex real-time polymerase chain reaction (PCR) assay and a syndromic multi-pathogen real-time PCR assay for the detection of up to 18 bacterial and viral pathogens. Pathogen detection was compared between conventional and molecular assays.Results: A potential pathogen was detected in 6% (12/188) and 47% (89/188) of specimens on the triplex and the multi-pathogen assay, respectively. Epstein-Barr virus (49/188; 26%), human herpes virus 7 (22/188; 12%), herpes simplex virus 1 (13/188; 7%) and Streptococcus pneumoniae (10/188; 5%) were the leading pathogens detected on the syndromic multi-pathogen PCR. Further, using the multi-pathogen PCR assay, a potential pathogen was detected in 44% (73/166) of the specimens which were negative following routine testing. Overall, combining routine testing and molecular platforms significantly improved pathogen detection (p  0.001); a potential pathogen was identified in 51% (95/188) of the specimens tested, compared to 12% (22/188) using routine methods alone.Conclusion: The use of molecular tests improved pathogen detection by 39% when paired with routine methods.Contribution: Multi-pathogen molecular testing is useful for rapidly diagnosing meningitis cases.
A qualitative illuminative evaluation of emotional intelligence training as transformative learning
Authors: Fourie Christine , Potgieter Ingrid L. , Coetzee Melinde
Published: December 2024

Orientation: The study focuses on emotional intelligence (EI) training, which is known to promote socio-emotional competencies and behaviours for business success.Research purpose: The study seeks to illuminate the extent to which the Minnaar EQ Dynamics Self-Awareness Programme facilitates transformative learning in EI including its spill-over effects in the workplace.Motivation for the study: Qualitative illuminative research on the transformative learning effect of EI training, and especially its spill-over effect into the workplace, is scant.Research approach/design and method: The study employed a retrospective qualitative case study design with semi-structured interviews as guided by an illuminative evaluation methodology. The ATLAS.ti software programme was utilised to analyse the data collected from nine training programme participants employed in a mining company situated in Gauteng.Main findings: The findings illuminated transformative learning pertaining to intrapersonal and interpersonal domains of EI which positively spilled over to social interactions in the working environment. Some aspects of the training methodology appeared to have contributed to the transformative learning effects.Practical/managerial implications: The findings attest to the value of investing in evidence-based EI training programmes that facilitate transformative learning.Contribution/value-add: The findings underscore the role of transformative EI training in fostering personal growth and development, positive relationships, effective communication and a conducive work environment for organisational success.
Assessment of ameliorative effects of Moringa oleifera Lam. on epididymal dysfunctions and fertility in streptozotocin–induced diabetic rats
Authors: Jangir Ram Niwas , Jain Gyan Chand
Published: December 2024

Objective:

To assess the protective effects of 70% ethanolic extract of Moringa (M.) oleifera leaves on fertility and epididymal dysfunctions in diabetic rats.

Methods:

Thirty-six male Wistar rats were divided into six groups, each with six rats. Group I was the normal control group receiving vehicle (0.5 mL of distilled water/rat/day) orally; group II, III, IV, V and VI were injected intraperitoneally with 60 mg/kg of streptozotocin once to induce type I diabetes. Then, the diabetic rats in group II receiving vehicle (0.5 mL of distilled water /rat/day) orally; the diabetic rats in groups III, IV and V were orally treated with M. oleifera leaf extract at dose of 100, 250, and 500 mg/kg body weight (b.wt.)/day, respectively; the diabetic rats in group VI were administrated with reference drug glibenclamide (5 mg/kg b.wt./day). The treatment lasted for 60 days. Sperm parameters (sperm count, motility and viability), fertility index, litter size, lipid peroxidation and antioxidative defense markers (i.e. superoxide dismutase, catalase, glutathione, and ascorbic acid) in the epididymal tissue were determined. Histopathological changes in epididymis were also evaluated.

Results:

Administration of different doses of M. oleifera leaf extract in diabetic rats induced a remarkable dose dependent improvement in sperm parameters, fertility index, litter size, epididymal antioxidant status and also restored histopathological changes as compared to the diabetic control group. These findings were comparable with reference drug.

Conclusions:

M. oleifera leaf extract possesses significant antioxidant activities as well as beneficial effects on epididymal dysfunctions in diabetic male rats.
Every group is the group of self-homotopy equivalences of finite dimensional $\mathrm{CW}$-complex
Authors: Benkhalifa Mahmoud
Published: December 2024

We prove that any group $G$ occurs as $\mathcal{E}(X)$, where $X$ is a $\mathrm{CW}$-complex of finite dimension and $\mathcal{E}(X)$ denotes its group of self-homotopy equivalences. Thus, we generalize a well-known theorem due to Costoya and Viruel [9] asserting that any finite group occurs as $\mathcal{E}(X)$, where $X$ is rational elliptic space.
Bibliography: 12 titles.
Consecutive Evaluation of Systematic Community-Based COVID-19 Antigen Rapid Diagnostic Testing in Three Different Populations in Jamaica during the COVID-19 Pandemic
Authors: Walcott David , Ozongwu Chika , Bruce Carl , Nicholson Alison , Thoms Rodriguez Camille-Ann , Walker Jerome Patrick , Lindo John , Dawkins Melanie , Johnson Samantha , Collins Kristen , Pearson Tresana , Bailey-Higgins Vanessa , Dani Pallavi , Dias Shaquielle , Hoppe Anne
Published: December 2024

The rise in COVID-19 cases in late 2021 posed a grave threat to the public health system and the economy of Jamaica. A key pillar of controlling COVID-19 includes rapid diagnosis of SARS-CoV-2 infected individuals and their contacts. Hence, we evaluated the feasibility and acceptability of weekly deployment of antigen rapid diagnostic tests (Ag-RDTs) by conducting three 6-week studies within high-risk populations in Jamaica. We enrolled 1) 287 study participants (≥18 years) from low-income communities (Study A), 2) 262 healthcare workers (Study B), and 3) 88 students (14–17 years) (Study C). Conducting these independent studies was challenging. Willingness to participate was generally low with fear of phlebotomy (42%), discomfort associated with nasal swab (39%), and lack of parental consent (35%) being the most common reasons students gave (Study C) for lack of participation. Furthermore, only 57%, 66%, and 88% of participants concluded their final study visit in studies A to C, respectively. Participants’ commitment and external factors, such as severe weather and outbreaks of violence affected follow-up. Overall, a total of six participants (<1%) tested COVID-19 Ag-RDT positive during all three studies, thus the number of infections detected were too low to draw any conclusions relating to the efficacy of the testing approach. Antibodies against SARS-CoV-2 were detected in most study participants (78–94%), but vaccination rates differed significantly between communities. Understanding these differences in vaccination rates is important because, given the low participation and follow-up rate, mass vaccination may present a more suitable public health intervention than regular testing.
Changing Trends of Ralstonia Bacteremia in Patients at a Tertiary Care Center in North India: A 2-Year Retrospective Analysis
Authors: Jamwal Ashima , Varghese Gerlin , Tripathy Sarvodaya , Sarawat Deepika , Patel Sangram Singh , Kar Mitra , Tejan Nidhi , Sahu Chinmoy
Published: December 2024

Ralstonia species are recently emerging as pathogens of human importance. This study was performed to assess the distribution of Ralstonia species among bacteremia patients and the clinical and demographical factors of these patients. This retrospective observational study was performed in the Microbiology Department of a tertiary care center in North India from April 2022 to April 2024. All in-patients with blood cultures positive for Ralstonia species for the first time during the study period were included in the study. Positive blood cultures were inoculated on blood and MacConkey agar. Identification was done by matrix-assisted laser desorption ionization–time of flight mass spectrometry, and antibiotic sensitivity testing was determined by disc diffusion assay. During the study period, 26 isolates of Ralstonia species were identified. R. mannitolilytica was the predominant isolate, followed by R. pickettii. Most patients with Ralstonia bacteremia belonged to the age group of <60 years (n = 20; 78%). The median age of the study population was 62 years. The male-to-female ratio was 1.6:1. Most of the patients presented with complaints of fever (77%), followed by epigastric pain (38.4%). Among the underlying comorbidities, most of the patients with Ralstonia bacteremia had sepsis (73%), followed by multiorgan dysfunction syndrome (30.7%). None of the R. mannitolilytica isolates showed sensitivity to imipenem, meropenem, aztreonam, and ceftazidime. On comparing both the isolates, R. pickettii showed better sensitivity to amikacin, imipenem, meropenem, aztreonam, and ceftazidime than R. mannitolilytica. Overall mortality of the patients in the study was 22% (n = 6).
Evaluation of the Performance of Portable Hemoglobinometers at Measuring Hemoglobin and Detecting Anemia in a Periurban Pediatric Population in Lima, Peru
Authors: Silverstein Zach , Alva Mantari Alicia , Breglio Kimberly , Pajuelo Monica J. , Valdiviezo Gladys , Cruz Sandra , Castañeda Pamela , Rothstein Jessica D. , Huaman-Fernandez Lucia , Cabrera Lilia , Salguedo Mario , Barrientos Franklin , Saldivar-Espinoza Bryan , Núñez-Fernández Dennis , Gilman Robert H. , Sheen Patricia , Roman-Gonzalez Avid , Noazin Sassan , Zimic Mirko
Published: December 2024

As many as one in three people worldwide have anemia, with young children at increased risk of both disease and complications. In settings without clinical laboratories, portable hemoglobinometers serve important roles in diagnosing anemia and estimating prevalence. Here, we assess the validity of two such point-of-care devices—the HemoCue Hb201 and the HemoCue Hb301—relative to the international reference standard, the cyanmethemoglobin method. In total, 428 children ages 6–60 months were recruited at health posts in Lima, Peru, and venous and capillary blood samples were collected from each participant. Venous blood was assessed with the cyanmethemoglobin method, whereas capillary blood was assessed using the Hb201 and the Hb301; 16.1% of participants were found to have anemia using the cyanmethemoglobin method. Both the Hb201 (43.7%) and the Hb301 (20.6%) overestimated this prevalence, with the former reaching statistical significance (P <0.0001 and P = 0.11, respectively). Both devices also tended to underestimate hemoglobin concentration, with the Hb201 (mean difference = −0.99 g/dL; percentage error = −8.1%) being appreciably less accurate than the Hb301 (mean difference = −0.35 g/dL; percentage error = −2.7%). Areas under the curve for the Hb201 (0.92) and the Hb301 (0.93) were statistically similar (P = 0.28); however, the Hb201 incorrectly classified 29.4% of participants compared with 11.0% for the Hb301. Both devices had more false positives than false negatives. In conclusion, the Hb301 was found to be significantly more accurate than the Hb201 at measuring hemoglobin, diagnosing anemia, and estimating anemia prevalence.
Corrosion Properties of Aluminium 7075 Basalt Particulate Reinforced
Metal Matrix Composite Prepared by Stir Casting
Authors: Vallimanalan A. , Murali M. , Mahendran R. , Manivannan S.
Published: December 2024

Basalt-based products are known to provide substantial wear and corrosion
resistance even in harsh environments. This paper aims to explore the stir
casting technique as an efficient way to reinforce basalt particulates into
Aluminium (AA7075). The properties such as hardness, ultimate tensile strength
with corrosion behaviour of the composites were evaluated and compared with
as-cast AA7075 fabricated under the same conditions. It is evident from the
results that an increase in basalt particulate content significantly increases
the ultimate tensile strength of 216 MPa and hardness of 123 VHN. The mechanism
of bonding between basalt particulate and aluminum alloy at the interface was
studied using scanning electron microscopy (SEM). AA7075 matrix composites
exhibited better corrosion resistance and they showed enhancement in thermal and
mechanical properties.
Investigation on Mechanical and Metallurgical Characterization of
Micro-Alloyed Steel Produced by Friction Stir Welding (FSW)
Authors: Rajan C. Sakthi , Kumar N. Mathan , Kumar K. Vetrivel , Kannan S. , Soundararajan S.
Published: December 2024

This research investigates the impact of friction stir welding (FSW) used to join
micro-alloyed steel, on the material and its mechanical characteristics. FSW
increases the metallurgical and mechanical qualities of joints made from
micro-alloyed steel. However, Friction Stir Welding has produced only modest
improvements in connecting steels. Automobile chassis, offshore platforms, oil
and gas pipelines, mining, shipbuilding and railroad carriages, pressure
vessels, bridges, and storage tanks are just some of the many places and find
micro-alloyed steels employed. Frictional heat and tool movement over the joint
cause micro defects occurred. Tungsten carbide tools are used in this
investigation. Welding shares the same process characteristics, such as the
tool's rotating speed (900 rpm) and axial force (10 kN). The table's traverse
speed options are available, including 50 mm/min, 60 mm/min, and 70 mm/min.
Vickers microhardness testing machines and tensile testing machines are used to
perform mechanical characterizations such as hardness testing and tensile
testing, respectively. Charpy testing was used to analyze the impact energy
released during the fracture of the welded joint. The Scanning Electron
Microscope (SEM) and Optical Microscope are used for metallurgical
characterizations such as microstructure and tensile fracture research. DMR-249A
is low-carbon micro-alloyed steel, and it is a far better grade than the
multiple grades that have previously been used for naval and other industrial
uses like shipbuilding, railway car construction, etc.
An Innovative Method to Measure Tapered Roller Bearing Preload in Manual Transmission & Identification of Crucial Influencing Parameters
Authors: Gaurav Kumar , Kumar Arun , Singh Maninder Pal , Dhawan Soumil , Singh Kulbir , Kumar Krishan , Singh Manvir
Published: December 2024

In manual transmission, bearing preload is a vital factor for optimum durability and performance of tapered roller bearings (TRB). To achieve better optimization of bearing preload, a precise measurement method is a minimum requisite. This technical paper investigates multiple ideas and develops a novel methodology for accurate bearing preload measurement, overcoming the challenges produced by the complexity of transmission design.

This paper provides a systematic approach to bearing preload measurement in manual transmission along with identification of key parameters responsible for influencing bearing preload, such as rigidity and fit of the components. A comprehensive experimental study at both part level and system level was conducted to quantify the effects of above-mentioned parameters on preload and transmission performance. Furthermore, the paper explores the effect of bearing preload optimization on the durability performance of the transmission unit.
Aluminum Alloy, Flash-Welded Rings, 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T73), Solution and Precipitation Heat Treated
Authors:   AMS D Nonferrous Alloys Committee
Published: December 2024

This specification covers an aluminum alloy in the form of flash-welded rings 0.062 to 4.499 inches (1.57 to 114.27 mm), inclusive, in radial thickness with cross-sectional areas up to 32 square inches (206 cm2) (see 8.6).
Nickel - Copper Alloy, Corrosion-Resistant, Bars, Forgings and Forging Stock, 67Ni - 30Cu - 0.04S, Free Machining
Authors:   AMS F Corrosion and Heat Resistant Alloys Committee
Published: December 2024

This specification covers a corrosion-resistant nickel-copper alloy in the form of bars up to 3.00 inches (76.2 mm), inclusive, in thickness and forgings and forging stock of any size.
Road Vehicles - Friction Materials - Finished Brake Pad Normalized Elastic Constant of Friction Material
Authors:   Brake Linings Standards Committee
Published: December 2024

This SAE standard specifies a method for testing and measuring a normalized elastic constant of brake pad assemblies using ultrasound. This document applies to disc brake pad assemblies and its coupons or segments used in road vehicles.
Public engagement with IP issues through digital activism and Select Committees: a case study on the #BrokenRecord campaigns on music streaming
Authors: Luk Ann
Published: December 2024

Changes in technology, including digitization, the rise of the internet and AI, create challenges for copyright law, with one of these being the extent to which creator rights can and should be protected. This concern was raised by the UK #BrokenRecord Twitter (now X) campaigns on music streaming and its related DCMS (now CMS) Committee inquiry, which focused on whether musicians receive adequate and fair remuneration from streaming. This article takes an empirical case study approach to evaluate how the public engaged with these IP issues using digital activism through Twitter and Select Committees in Parliament. The key questions addressed are as follows: How did the public use digital activism to engage with current IP issues on music streaming? How did the DCMS Committee draw on digital activism as forums to increase public engagement with current IP issues? What is the impact of these public engagement mechanisms on actual legal and policy change, and what implications can be drawn for the future?
Bridging Western norms and Chinese traditions: the evolution of access and benefit-sharing for traditional knowledge in China
Authors: Xia Nan
Published: December 2024

The development of effective mechanisms for traditional knowledge governance and regulation of access and benefit sharing (ABS) is one of the most challenging and complicated issues facing the global community. These challenges are being addressed by a dramatic increase in national and international efforts in recent years. China’s support for the international regime on ABS was later reflected by its development of a range of laws, policies and administrative measures and also, at times, by its amendments to existing statutes to implement its international obligations and frame the general ABS regime, particularly governing access to traditional knowledge and benefit sharing. This article addresses the practicality of implementing a range of policy, legal and administrative ABS schemes and its potential impacts on traditional knowledge governance in China’s historical, social and cultural context, in which China’s traditional knowledge is deeply rooted and nurtured.
The world’s first case involving a generative artificial intelligence: Shanghai Xinchuanghua Cultural Development Co Ltd v AI Company (pseudonym)
Authors: Jiang Fen , Wu Hong
Published: December 2024

Shanghai Xinchuanghua Cultural Development Co Ltd v AI Company (pseudonym) is the first in the world to render a judgment on whether a generative artificial intelligence service provider should bear copyright liability for the infringement of other people’s prior works by its generated content. The court ruled on the types of copyright exclusive rights involved in the infringement by generative artificial intelligence service providers. However, the court should not bypass addressing the prerequisite issue of the copyrightability of the generated content. More importantly, it established criteria for determining the duty of care of generative artificial intelligence service providers based on three aspects: the duty to establish a complaint and reporting mechanism, the duty to warn of potential risks and the duty to provide prominent labelling. By focusing on the duty of care, the court shifted the burden of proof for causation to the defendant, thereby avoiding the evidentiary challenges faced by European and American courts. Additionally, the court established specific measures to stop the infringement.
Over Kanserli Hastaya Uygulanması Planlanan Sitoredüktif Cerrahi Sonrası Hipertermik İntraperitoneal Kemoterapi Prosedüründe Preoperatif Dönem Yönetiminde Hemşire Rol ve Sorumluluklarında Kanıta Dayalı Uygulamalar ve ERAS Protokolü: Geleneksel Derleme
Authors: Küçükkaya Burcu , Temiz Mehtap
Published: December 2024

Cerrahi Sonrası Hızlandırılmış İyileşme (Enhanced Recovery After Surgery; ERAS) protokolü, hastaların cerrahi işlem sonrasında hastanede kalış süresini ve komplikasyon riskini azaltmak için uygulanan çok yönlü kanıta dayalı müdahaleleri ifade etmektedir. Bu kapsamda, jinekolojik kanserlerin cerrahisi de dahil olmak üzere farklı majör cerrahi türlerinde etkili olmaktadır. Özellikle Sitoredüktif Cerrahi Sonrası Hipertermik İntraperitoneal Kemoterapi (SRCHİPEK) prosedürünün komplikasyon, morbidite ve mortalite oranı yüksek, majör ve kompleks bir işlem olması nedeniyle perioperatif dönemde hazırlık ve bakım büyük öneme sahiptir. SRCHİPEK planlanan hastalar için kadın hastalıkları hemşirelerinin kanıta dayalı uygulamalar kapsamında ERAS protokolü yaklaşımı ile hastanın bilgilendirilmesi ve danışmanlık yapılması, sağlıklı yaşam biçim davranışlarının kazandırılması, beslenme ve anemi durumunun değerlendirilmesi, immünonütrisyonun sağlanması, kardiyak risk ve fonksiyonun değerlendirilmesi, gereksiz premedikasyon uygulamasından kaçınılması, sedatif/anksiyolitik kullanımının ve yan etkilerinin izlenmesi, ameliyat öncesi planlanan hazırlıklar ile işlem öncesi uzun süre aç kalmanın önlenmesi, normotermi ve normogliseminin sürdürülmesi ve sık takibi gibi sorumlulukları bulunmaktadır. Böylelikle SRCHİPEK uygulanmış over kanserli kadınlarda görülen komplikasyon insidansı azalacak, hastalar temel ihtiyaçlarını bağımsız olarak karşılayabilir hale gelecek, daha erken taburcu olabilecek ve dolayısıyla sosyal yaşama daha hızlı dönebileceklerdir. Bu derlemede amaç, over kanserli hastalara uygulanması planlanan sitoredüktif cerrahi sonrası hipertermik intraperitoneal kemoterapi prosedüründe perioperatif dönem yönetiminde kullanılan kanıta dayalı uygulamalar ve ERAS protokolünde hemşirelerin rol ve sorumluluklarını incelemektir.
Possibilities of RES Participation in Voltage Control in the Transmission Grid of Serbia
Authors:   Univerzitet u Beogradu - Elektrotehnički fakultet u Beogradu, Žerajić Miroslav , Šiljegović Todor ,   Go2Power Consulting, Gorašević Pavle ,   Elektroenergetski koordinacioni centar, Lazović Đorđe ,   Univerzitet u Beogradu - Elektrotehnički fakultet u Beogradu, Škrbić Bojana ,   Univerzitet u Beogradu - Elektrotehnički fakultet u Beogradu, Đurišić Željko ,   Univerzitet u Beogradu - Elektrotehnički fakultet u Beogradu
Published: December 2024

The integration of renewable energy sources (RES) changes the current concept of power system operation and planning. In addition to significant changes in topology and the emergence of new large centres of electricity production, which affect the change in the dominant directions of power flows, the impact on voltage profile in the power system is also changing in terms of the possibility of RES participation in voltage control. Today's inverter technologies and power electronics in RES systems allow them to participate in voltage control to help maintain grid voltage within acceptable limits and are designed to provide voltage support and reactive power control. Modern wind turbines are capable of operating in a wide range of reactive power generation/absorption at different active power setpoints, as well as in no-wind regimes, while modern PV systems are capable of providing voltage control support and reactive power control even in conditions of absence of the primary energy source. By controlling output voltage and reactive power, such systems can help maintain proper voltage values in the grid. This paper will present the results of the analysis of the impact of RES on the voltage profile of the Serbian transmission system, for a period of one year, with an hourly resolution. The analysis will be carried out for two scenarios: the existing state of the transmission system with already connected RES and the future/prospective state of the transmission system that includes future/planned projects of connection of RES to the transmission system. By comparing the results for these two scenarios, it is possible to determine the impact of RES on the voltage profile in all operating conditions of the
transmission system and the possibility of RES participation in voltage control in the transmission system of Serbia.
A Comparative Study of PID Controllers and Lead-Lag Compensators for Ship Roll Stabilization
Authors:   University of Niš, Faculty of Electronic Engineering, Niš, Serbia, Mitić Darko , Milić Zoran ,   Academy of Applied Technical and Preschool Studies, Niš, Serbia
Published: December 2024

The paper deals with the ship roll stabilization using integrated fin rudder roll stabilizers designed on the basis of the linearized ship model. Two triplets of controllers for fin roll and rudder roll stabilization as well as for ship yaw motion control are designed and compared. The digital simulation results show that the lead-lag compensators designed using Bode plots may achieve better roll-reduction than traditionally designed PID controllers.
The Lira 2024 Project
Authors:   University of Niš, Faculty of Electronic Engineering, Department of Computer Science, Niš, Serbia, Vučković Vladan
Published: December 2024

This paper shows the assembly process of a new experimental computer called Lira 2024, which was a remake of the original computer Lira 512 first produced by the factory “Elektronska industrija Nis” in 1988. Using modern PC components, it is shown how much simpler the assembly process is, compared with designing the original computer. Also, it can be done at home instead of in a factory. It is shown that the performance and quality of Lira 2024 PC computer is significantly better in every component segment than the original computer.
Initiating a High-performance Graphical Library for Next Generation Metrel Instruments
Authors:   Metrel d.o.o., Horjul, Slovenia, Šprager Sebastijan , Benkič Karl ,   Metrel d.o.o., Horjul, Slovenia
Published: December 2024

This paper details the development initiation of a new graphical library tailored for Metrel instruments, enhancing their embedded firmware with advanced graphical capabilities. A comprehensive review of existing solutions and state-of-the-art technologies informed a modular architecture, optimized to address specific hardware constraints. LVGL was chosen as the core framework, offering a lightweight, highly customizable solution to meet performance and interface requirements. Preliminary results demonstrate improved device responsiveness and a significantly enhanced user interface experience, aligning with Metrel’s standards for efficiency and usability in professional instruments.
Rompiendo silencios desde la neurodiversidad: Mujeres universitarias con TDAH
Authors: Alvarez-Aranda Nelly
Published: December 2024

Señora Editora:

Como docente universitaria y mujer con TDAH, destaco la importancia de abordar el TDAH en mujeres adultas mediante la integración de los modelos biopsicosocial y de neurodiversidad.1 Esto implica ir más allá del modelo médico tradicional, valorando las diferencias en el funcionamiento cerebral, especialmente en el género femenino.

Las mujeres con TDAH enfrentan desafíos distintos de los hombres, siendo propensa a la falta de regulación de la atención y la desorganización, en lugar de la hiperactividad e impulsividad. Esta diferencia conduce a la subestimación de sus síntomas internalizados,2 perpetuando sesgos en diagnósticos y prácticas clínicas, favoreciendo la presentación masculina del TDAH.3 La propensión a diagnosticar erróneamente las comorbilidades como trastornos primarios, destaca la necesidad de distinguir entre lo primario y lo secundario para lograr un diagnóstico y atención oportuna y adecuada.
Importancia de la evaluación oftalmológica temprana en el neurodesarrollo
Authors: Piana-Castillo Domenica , Pólit-Manríquez María Paz
Published: December 2024

Estimada Editora:

Consideramos que la correcta evaluación de la motilidad ocular extrínseca es una práctica fundamental en el médico general. En un corto tiempo, es posible identificar signos de disfunción muscular o nerviosa, según la posición de la mirada en la cual se identifica el defecto. No solo los familiares sin experiencia clínica, sino los propios médicos generales, no están seguros de poder identificar desviaciones del eje visual que no sean lo suficientemente evidentes como para producir una alteración estética evidente. Invitamos a la reflexión de la importancia en realizar maniobras sencillas y dirigidas para identificar un defecto visual u oculomotor en etapas tempranas del desarrollo psicomotor, para evitar la ambliopía que afectaría la calidad de vida de los pacientes. Cabe enfatizar el interés en capacitar a estudiantes de medicina para reconocer la importancia de las alteraciones visuales en el neurodesarrollo.
Alta viscosidad sanguínea en pacientes con Ictus Isquémico que residen a gran altitud.
Authors: Huamaní Charles , Oré-Montalvo Víctor , Bayona-Pancorbo William , Pérez-Alviz Carlos , Acuña-Mamani Juan C. , Córdova-Heredia Golda , Herrera-Aedo Renzo , Marmanillo-Valenza Raúl , Miranda-Solis Franklin , Pacheco-Otárola Luis
Published: December 2024

Introducción: Los factores de riesgo de ictus isquémico han sido ampliamente estudiados. Sin embargo, se han realizado pocos estudios en poblaciones que residen en ciudades de gran altitud. Nuestro objetivo es evaluar la asociación entre la viscosidad sanguínea y el ictus isquémico en pacientes residentes en altura e identificar el subtipo de ictus isquémico más frecuente entre estos pacientes.

Métodos: Estudio observacional y analítico que se realizó en un hospital en Cusco, Perú (3399 m) e incluyó pacientes con y sin ictus. La viscosidad de la sangre (en centipoises [cP]) se midió utilizando un viscosímetro de cono/placa.

Resultados: Se incluyeron un total de 386 pacientes, de los cuales 141 (36,5%) presentaron ictus. La mediana de edad fue de 67 años (RIC 52-80), y 165 (42,7%) pacientes eran mujeres. La viscosidad sanguínea fue significativamente mayor en el grupo de ictus isquémico (5,9 cP; RIC, 5,2–6,8) que en el grupo sin ictus (5,5 cP; RIC, 4,9–6,1; p<0,001). Un aumento de la viscosidad de la sangre se asoció con un mayor riesgo de sufrir un accidente cerebrovascular isquémico (OR 1,40; intervalo de confianza del 95%, 1,16–1,69; p<0,001). Los pacientes con ictus por oclusión de vasos pequeños tenían la mayor viscosidad sanguínea (6,1 cP; RIC, 5,8-6,3).

Conclusiones: Los pacientes con ictus isquémico que residen en grandes alturas tienen una mayor viscosidad sanguínea que los pacientes sin ictus, aunque el subtipo de oclusión de pequeño vaso se corresponde con la mayor viscosidad sanguínea.
La inestabilidad postural en las ratas hemiparkinsonianas es reducida por implantes intraestriatales de SiO2-DA
Authors: Bata-García José L. , Esquivel-Gómez Dulce M. , Pérez-Orozco Carlos E. , Castilla-Tirado Ángel S. , Estrada-Loyo Luis A.
Published: December 2024

La enfermedad de Parkinson (EP) es una enfermedad crónica con pérdida de neuronas dopaminérgicas de la sustancia negra pars compacta (SNpc) que causa deterioro motor.

El objetivo de este estudio fue evaluar el efecto de la liberación intraestriatal de dopamina (DA) de reservorios de SiO2 sobre la asimetría postural en animales hemiparkinsonianos.

Se utilizaron dos pruebas motoras con relevancia clínica: la Prueba de Ajuste de pasos y la Prueba de Cilindro durante exploración vertical. Se formaron tres grupos: animales sin implante (L), con implante de SiO2 sin DA (SiO2) y con implante de SiO2 con DA (SiO2-DA).

Todas las ratas mostraron deterioro significativo de hasta 80% (p < 0,0001) en la ejecución de los pasos con la pata anterior contralateral (PAC), sin afectación de la ipsilateral (PAI) y únicamente el grupo SiO2-DA recuperó la simetría al 100% en el ajuste de pasos entre ambas patas.

En el cilindro solo el grupo SiO2-DA redujo significativamente (p < 0,0001) el deterioro en el uso de la PAC durante exploración vertical. No se observó tolerancia ni discinesias en el tiempo del estudio.

Estos resultados mostraron que los reservorios de SiO2-DA son seguros y una alternativa terapéutica prometedora contra la EP.
Complicaciones intrahospitalarias del evento cerebrovascular isquémico de novo en centros hospitalarios de segundo nivel de atención
Authors: Rodríguez-Alarcón Carlos , Moreira-Alcívar Juletsy , Yépez-Guerra Luis , Romo-Guaranda Fátima , Navarrete-Romo Hillary
Published: December 2024

Antecedentes: La enfermedad cerebrovascular isquémica (ECVi) es una de las primeras causas de mortalidad a nivel mundial, aproximadamente el 90% de los pacientes manifiestan complicaciones que han ido en ascenso progresivo desde las últimas décadas. El objetivo del estudio es determinar las complicaciones intrahospitalarias de la ECVi en Hospitales de segundo nivel durante el periodo 2020-2022.

Metodología: Se realizó un estudio retrospectivo en dos hospitales de segundo nivel en Guayaquil. Se incluyeron pacientes con edad ≥ 40 años con enfermedad cerebrovascular isquémica de novo. Se utilizó la clasificación de Oxfordshire Community Stroke Project (OCSP) para categorizarlos según la circulación afectada, siendo el neurólogo el profesional responsable de llevar a cabo dicha categorización. Se aplicó estadística descriptiva para determinar las complicaciones neurológicas (CN) y extraneurológicas (CEN) más frecuentes, utilizando frecuencias y porcentajes.

Resultados: En 320 pacientes con ECVi, el 64% fueron hombres con edad promedio de 70 años. Las complicaciones intrahospitalarias se presentaron en 72,8% de los pacientes. La incidencia promedio de CN en la población estudiada fue del 48.1% mientras que las CEN fue del 55,6%.

Conclusión: Las complicaciones intrahospitalarias del ECVi son frecuentes y la incidencia de estas varía según la circulación afectada.
Encefalitis y demencia rápidamente progresiva por probable enfermedad priónica que se presenta con un estado epiléptico no convulsivo. Reporte de caso y revisión de la literatura
Authors: Cubides-Diaz Diego , Negrette Lazaro Valentina , Rey Mario , Mantilla Karen , Cáceres Eder
Published: December 2024

Las prionopatías son trastornos neurológicos infrecuentes, fatales y rápidamente progresivos caracterizados por el plegamiento anormal de proteínas neuronales.

Su diagnóstico es un reto frecuentemente, y se fundamenta en una alta sospecha clínica, hallazgos imagenológicos típicos, patrones electroencefalográficos sugestivos y el estudio del líquido cefalorraquídeo.

Presentamos un caso de enfermedad por priones probable con un deterioro neurológico acelerado y un estado epiléptico no convulsivo, este se ha descrito en pocos casos a nivel mundial y se ha asociado con desenlaces neurológicos desfavorables y menor tasa de supervivencia.

Las manifestaciones clínicas, tratamiento y desenlaces se presentan a continuación.
FORAGE NUTRITIVE QUALITY AND SOME VITAMIN CONTENTS OF DORYCNIUM GRAECUM (L.) SER. AND DORYCNIUM PENTAPHYLLUM SCOP.
Authors: Ateş Ertan , Tenikecier Hazım Serkan
Published: December 2024

The research was conducted to determine some forage quality traits, macro and micro mineral, α-tocopherol, β-carotene and ergocalciferol content of Dorycnium graecum (L.) Ser. and Dorycnium pentaphyllum Scop. The samples were obtained in 2021 at end of flowering-beginning of pod binding stage, from the north side of the Ganos Mountain of Tekirdağ in Thrace-Türkiye, with a typical subtropical climate. The plant height (56.52 cm), number of stems (29.20 pcs), fresh above-ground biomass (172.00 g plant-1), dry above-ground biomass (67.32 g plant-1), crude ash (5.34%), P (0.27%), K (2.01%), Ca (1.52%), Zn (0.028 mg g-1), DDM (66.58%), DMI (2.84%), TDN (63.40%), Nel (0.652), Nem (0.704), Neg (0.377) of D. pentaphyllum were determined higher than D. graecum. The crude protein (17.10 %), ADF (29.09 %), NDF (43.26 %), Mg (0.31 %), Fe (0.24 mg g-1), Cu (1.31 mg g-1), Mo (0.192 mg g-1), α-tocopherol (122.06 mg kg-1), β-carotene (321.06 mg kg-1), ergocalciferol (7.02 µg kg-1) of D. graecum were found higher than D. pentaphyllum. According to the results of the characteristics examined in the research, both species can be evaluated in Tekirdağ, Thrace-Türkiye and similar ecological conditions.
IDENTIFICATION AND MONITORING OF CYDALIMA PERSPECTALIS (WALKER, 1859) IN THE PRODUCTION FIELDS OF AN ORNAMENTAL NURSERY FROM THE IASI AREA
Authors: Golache Iuliana Elena , Ungureanu Ionut Vasile , Perju Ionel , Mineață Iulia , Herea Monica , Tălmaciu Mihai
Published: December 2024

The box tree moth (Cydalima perspectalis Walker, 1859) is a harmful species native to subtropical regions of Asia. Its introduction into areas of America and Europe has led to it being classified as a biological invasion. This moth poses a significant threat to boxwood plants (Buxus spp.), as its larvae feed voraciously on the leaves and stems, causing defoliation and weakening of the plants. This study was conducted during 2023 within an ornamental nursery located in the Iași County both in the greenhouse and the outdoor production fields of buxus. The aim of this paper focuses on the identification and monitoring of Cydalima perspectalis (Walker, 1859) using pheromonal traps placed between May-September. In the greenhouse, the first adult moths were identified on April 3rd. Subsequently, the monitoring efforts in the outdoor production fields revealed the flight activity of the overwintered generation adults from May 15th to June 21st, while the flight activity of the following generation adults occurred 28 days later, beginning with July 19th and until August 24th. The results obtained were processed and interpreted statistically and will constitute preliminary aspects in the control strategies of Cydalima perspectalis (Walker, 1859) substantiated and adapted to the zonal ecosystem.
DETERMINATION OF STOMATAL MORPHOLOGY IN SOME CITRUS SPP. SPECIES
Authors: Tunç Yazgan , Yaman Mehmet , Yilmaz Kadir Uğurtan , Fidan Rabia
Published: December 2024

Citrus spp. fruits belonging to the Rutaceae family include sour and bitter oranges, sweet oranges, pomelo, grapefruit, citrons, lemons, oranges, bergamots, mandarins, limes, etc, consists of a wide variety of hybrids and hybrid individuals. In this study, it was aimed to determine the stomatal morphology of 6 different Citrus spp. species (C. lemon L., C. paradisi L., C. aurantium L, C. sinensis L., C. bergamia L., C. reticulata) grown in the ecological conditions of Hatay/Türkiye. Stoma width: 16.66±2.31 (‘Citrus paradisi L.’)-24.32±1.75 (‘Citrus bergamia L.’) µm; stoma length: 18.84±2.39 (‘Citrus paradisi L.’)-29.59±3.27 (‘Citrus bergamia L.’) µm; stoma density varied between 1007±83.56 (‘Citrus reticulata L.’) and 1172±84.67 (‘Citrus paradisi L.’) stoma/mm². As a result of the correlation matrix analysis, a positive correlation was found between stoma width and stoma length (r=0.90, p<0.05). According to principal component analysis, the first three components explain 96.8% of the total variation. According to the heatmap analysis, Citrus reticula L. formed a group, while other Citrus spp. species formed a group. Stoma morphology was divided into two groups. Stomatal density, stomatal shape coefficient and pore width were included in one group, while other morphological criteria were included in another group.
Implementasi Teori Law as a Tools of Social Engineering Mahkamah Konstitusi sebagai Instrumen Kontrol Sosial dalam Sistem Hukum Indonesia
Authors: Al Alawi Moh Nauval Karim
Published: December 2024

Hukum bukan sekadar sistem normatif, melainkan instrumen dinamis untuk menciptakan perubahan sosial. Penelitian ini mengkaji penerapan teori hukum Roscoe Pound sebagai alat rekayasa sosial melalui peran strategis Mahkamah Konstitusi Indonesia. Fokus penelitian ini adalah menganalisis bagaimana putusan-putusan Mahkamah Konstitusi berkontribusi dalam mengubah struktur sosial, menegakkan keadilan substantif, dan mendorong terbentuknya tatanan hukum yang responsif terhadap dinamika masyarakat. Melalui metode penelitian hukum normatif dengan pendekatan konseptual dan analisis doktrinal, penelitian ini mengkaji sejumlah putusan Mahkamah Konstitusi yang berdampak pada perubahan sosial. Hasil penelitian menunjukkan bahwa Mahkamah Konstitusi telah berperan aktif dalam rekayasa sosial melalui penafsiran konstitusi yang progresif, membuka ruang perbaikan sistem hukum, melindungi hak-hak konstitusional, dan menyelesaikan konflik sosial politik. Penelitian ini menyimpulkan bahwa penerapan teori Roscoe Pound melalui Mahkamah Konstitusi memiliki potensi yang signifikan dalam mengubah tatanan hukum dan sosial Indonesia menuju tatanan yang lebih adil, demokratis, dan responsif terhadap perubahan.