bluuebunny/crossref_metadata_2025 huggingface dataset:
Transmission Reliability Margin Determination for DC and DCQ Load Flow Method
Authors: Nadia Awatif , Hossain Md. Sanwar , Rahman Md. Istianatur , Shafiullah Md
Published: October 2023

In a bulk power system network, the transmission reliability margin
(TRM) is the extra amount in the available transfer capacity (ATC) that
ensures network security under a reasonable range of sensitivity. In ATC
estimation, voltage limit, reactive power limit, and system sensitivity
should be taken care to avoid inaccuracies that are required for
accurate TRM calculation. Determination of accurate TRM is crucial as it
should be bigger than any possible sensitivity for reliable operation of
the power system network. In this paper, the power system TRM is
determined by employing the DC and DCQ load flow methods. Three distinct
parameters such as load, line impedance, and voltage are taken into
consideration while calculating the system sensitivity that affects the
TRM calculation. The sensitivity term is calculated from ATC which is
also determined by the DC and DCQ methods. The TRMs are calculated for
several power transactions in two IEEE benchmark networks (IEEE 6-bus
and IEEE 14-bus systems) in MATLAB/SIMULINK platform. Obtained results
demonstrate the efficacy of the employed techniques as they outperform
the existing literature results under sensitivity.
Lithium salt combining fluoroethylene carbonate initiates MMA polymerization enabling dendrite-free solid-state lithium metal battery
Authors: Ye Xue , Liang Jianneng , Du Baorong , Li Yongliang , Ren Xiangzhong , Wu Dazhuan , Ouyang Xiaoping , Zhang Qianling , Liu Jianhong
Published: October 2023

This work demonstrates a novel polymerization-derived polymer
electrolyte (PDPE) consisting of methyl methacrylate (MMA), lithium
bis(trifluoromethanesulfonyl)imide (LiTFSI) or lithium
bis(fluorosulfonyl)imide (LiFSI) and fluoroethylene carbonate (FEC). The
polymerization of MMA was initiated by the amino compounds following an
anionic catalytic mechanism. It is worth noting that LiTFSI plays both
roles including the initiator and lithium-ion source in PDPE. In
principle, LiTFSI has great difficulty in initiating the polymerization
reaction of MMA monomer. However, FEC additive can work as a supporter
to facilitate the degree of dissociation of LiTFSI and increase its
initiator capacity due to the high dielectric constant. The as-prepared
PDPE has a high ionic conductivity (1.19×10-3 s cm-1), a wide
electrochemical stability window (5 V vs. Li+/Li) and a high Li ion
transfer number (tLi+) of 0.74 at room temperature (RT). Moreover, this
PDPE can effectively work as an artificial protective layer on Li metal
anode surface, which enabled the symmetric Li symmetric cell to achieve
a long-term cycling performance at 0.2 mAh cm-2 for 2800 h. The LiFePO4
battery with PDPE modified lithium metal anode shows a capacity
retention of 91.17% after 800 cycles at 0.5 C. This work provides a
facile and accessible approach to manufacturing MMA-based PDPE and shows
great potential as an interphase in SSLMBs.
Insights into the Origins of Solar-Assisted Electrochemical Water Oxidation in Allotropic Co5.47N/CoN Heterojunctions
Authors: Liu Sirui , Gao Qiong , Wu LiLi , Xu Zhikun , Ma XinZhi , Liu Shijie , Li Bo-Quan , Zhang Mingyi , Zhang XiTian
Published: October 2023

Solar irradiations can efficiently promote the kinetics of oxygen
evolution reaction (OER) during water splitting, where heterojunction
catalysts exhibit excellent photo-responsive properties. However,
insights into the origins of photo-assisted OER catalysis remain
unclear, especially the interfaced promotion under convergent solar
irradiation (CSI). Herein, novel allotropic Co5.47N/CoN heterojunctions
were synthesized, and corresponding OER mechanisms under CSI were
comprehensively uncovered from physical and chemical aspects using the
in-situ Raman technique and electrochemical cyclic voltammetry method.
Our results provide a unique mechanism where high-energy UV light
promotes the Co3+/4+ conversion process in addition to the ordinary
photoelectric effect excitation of Co2+ material. Importantly, visible
light under CSI can produce a photothermal effect for Co2+ excitation
and Co3+/4+ conversion, which promotes the OER significantly more than
the usual photoelectric effect. As a result, Co5.47N/CoN (containing
28% CoN) obtained 317.9% OER enhancement, which provides a pathway for
constructing excellent OER catalysts.
A robust framework for the assessment of SEO keywords based on the Possibility T-spherical fuzzy hypersoft sets with aggregation operators
Authors: Saeed Muhammad , Ali Mubashir , Morsy Salwa El
Published: October 2023

This research introduces an innovative method for SEO keyword ranking by
incorporating possibility T-spherical fuzzy hypersoft sets (PTSFHS) and
aggregation operators. The PTSFHS framework effectively handles
uncertainty and vagueness associated with keyword rankings. Customized
aggregation operators are introduced, allowing the combination and
synthesis of ranking information from multiple sources. These operators
consider the varying importance of keywords, resulting in more accurate
overall rankings. Extensive experiments on real-world SEO datasets
demonstrate the superiority of the suggested methodology. Integrating
PTSFHS with aggregation operators significantly improves the accuracy of
SEO keyword ranking. The approach provides valuable insights for website
owners, marketers, and SEO practitioners, aiding in informed
decision-making and online optimization. The findings contribute to the
field of SEO and inspire further research on advanced fuzzy set-based
techniques in information retrieval and web analytics.
A rapid method for the determination of stable hydrogen isotope ratios of acetic acid in vinegar
Authors: Feng Di , Wang Daobing , Zhong Qiding , Wu Zhuying , Yue Hongwei , Liu Yang , Zhang Luoqi
Published: October 2023

RATIONALE Vinegar is an everyday condiment made from fermented
grains or fruits. It contains acetic acid which is the main organic
material produced by fermentation. Vinegar suffers from the authenticity
problem of exogenous adulteration due to the indistinguishability of
low-cost chemical sources of glacial acetic acid from acetic acid
produced by fermentation. It is necessary to establish a simple and
rapid measurement technique. METHODS According to the total
acid content of vinegar diluted with acetone to a certain concentration.
On-line separation and determination of acetic acid δD in vinegar by
GC-P-IRMS. RESULTS The HP-Plot/U column was selected for online
separation of acetic acid and water with molecular sieve
characteristics. At the same time combined with the instrument blowback
function to remove water. Dilute solvent acetone through molecular sieve
to remove trace water. The reproducibility of this method is less than
3‰. The long-term stability is within a reasonable error range. The
accuracy correlation coefficient is greater than 0.99. The δD values of
acetic acid in vinegar (-264.5‰ ± 20.3‰) and from chemical sources
(-30.5‰ ± 90.8‰). CONCLUSIONS A method was rapidly developed
for identify different sources of acetic acid and different sources of
acetic acid exhibited significant hydrogen isotope distribution
characteristics. Additionally, it was observed that the carboxyl
hydrogen of acetic acid exhibited facile exchange with water. In future
investigations, we aim to mitigate this interference.
Temporal trends in use of antisecretory agents among patients administered clopidogrel-based dual antiplatelet therapy after percutaneous coronary intervention
Authors: Je Nam Kyung , Lee Yonghyuk , Choi Hye-Jeong , Park Susin
Published: October 2023

Background: Antisecretory drugs are commonly prescribed with
clopidogrel-based dual antiplatelet therapy (DAPT) to prevent
gastrointestinal bleeding in high-risk patients after percutaneous
coronary intervention (PCI). However, omeprazole and esomeprazole
(inhibiting proton pump inhibitors [PPIs]) increase cardiovascular
event rates on co-administration with clopidogrel. This study aimed to
examine trends in the use of antisecretory agents in patients
administered clopidogrel-based DAPT and the concomitant use of
clopidogrel and inhibiting PPIs. Methods: We used National
Inpatient Sample data compiled by the Health Insurance Review &
Assessment Service from 2009 to 2020. Further, we identified patients
who were prescribed clopidogrel-based DAPT after PCI and investigated
the concomitant use of antisecretory agents with clopidogrel. To verify
the annual trend of drug utilization, we used the Cochran–Armitage
trend test. Results: From 2009 to 2020, the percentage of H2
receptor antagonists users decreased steadily (from 82.5 % in 2009 to
25.3 % in 2020); instead, the percentage of PPI users increased (from
34.7 % in 2009 to 69.0 % in 2020). The use of inhibiting PPI also
increased (from 4.2 % in 2009 to 30.7 % in 2020). P-CAB was rarely
used before 2019; however, in 2020, it accounted for 7.8 % of the
antisecretory users. Conclusions: Our study demonstrates that
the use of inhibiting PPIs increased steadily in patients administered
clopidogrel-based DAPT therapy. This is a major concern since the
concomitant use of inhibiting PPIs with clopidogrel could increase the
risk of cardiovascular events.
Comparing gravity waves in a kilometre-scale run of the IFS to AIRS satellite observations and ERA5
Authors: Lear Emily Jane , Wright Corwin James , Hindley Neil , Polichtchouk Inna , Hoffmann Lars
Published: October 2023

Atmospheric gravity waves (GWs) impact the circulation and variability
of the atmosphere. Sub-grid scale GWs, which are too small to be
resolved, are parameterized in weather and climate models. However, some
models are now available at resolutions at which these waves must be
resolved and it is important to test whether these models do this
correctly. In this study, a GW resolving run of the ECMWF (European
Centre for Medium-Range Weather Forecasts) IFS (Integrated Forecasting
System), run with a 1.4 km average grid spacing (TCo7999 resolution),
was compared to observations from the Atmospheric Infrared Sounder
(AIRS) instrument, on NASA’s Aqua satellite, to test how well the model
resolves these waves. In this analysis, nighttime data were used from
the first 10 days of November 2018 over Asia and surrounding regions.
The IFS run is resampled with AIRS’s observational filter using two
different methods for comparison. The ECMWF ERA5 reanalysis is also
resampled as AIRS, to allow for comparison of how the high resolution
IFS run resolves GWs compared to a lower resolution model that uses GW
drag parametrizations. Wave properties are found in AIRS and the
resampled models using a multi-dimensional S-Transform method.
Orographic GWs can be seen in similar locations at similar times in all
three data sets. However, wave amplitudes and momentum fluxes in the
resampled IFS run were found to be significantly lower than in the
observations. This could be a result of horizontal and vertical
wavelengths in the IFS run being underestimated.
Comparison and analysis of hyperspectral temperature data in directed energy deposition
Authors: Sanchez-Medina Jorge , De Baere Dieter , Snyers Charles , Jardon Zoé , Hinderdael Michaël , Ertveldt Julien , Guillaume Patrick
Published: October 2023

Directed energy deposition is an additive manufacturing process that allows the production of near net shape structures. Moreover, the process can also be applied for the repair of high value components. To obtain structures with consistent good characteristics, the directed energy deposition process requires the implementation of a control system. The currently applied approaches for control that are discussed in the literature have specifically focused on melt-pool temperature control. Pyrometers have been used for such purposes; however, they provide only a single scalar value without any spatial information. In this paper, the implementation of a high-speed hyperspectral camera-based system is discussed with a high spatial resolution unlike the pyrometers. Different calibration and temperature estimation procedures for this camera-based system are evaluated and analyzed. The number of effective wavelengths needed for temperature estimation will be discussed in detail and provide an outlook on the potential of this hyperspectral camera-based system. In addition to the number of wavelengths, another important aspect of the temperature estimation methods is the stability with respect to disturbances. Within this paper, the impact of the nominal laser power will be evaluated on the stability of the temperature signals for a control system.
High repetition ultrafast laser ablation of graphite and silicon/graphite composite electrodes for lithium-ion batteries
Authors: Meyer Alexandra , Sterzl Yannic , Pfleging Wilhelm
Published: October 2023

Laser structuring can be applied to composite electrodes of lithium-ion cells to enhance wetting and to facilitate the usage of thick-film electrodes by reducing the lithium-ion diffusion overpotential and the tortuosity of the electrodes or the usage of electrodes containing silicon, where additional porosity is required to compensate the volume expansion during lithium de-/insertion. To integrate the additional laser processing step in the well-established electrode manufacturing route, the laser processing speed must be significantly increased to match with the belt speed, which is dependent on the electrode thickness and the type of manufacturing route. Upscaling can be realized by increasing the average laser power, laser intensity, and/or laser repetition rate. Here, an ultrashort pulsed laser source with an average power of 300 W and a pulse duration of 600 fs was applied. For the first time, the presented research provides detailed laser ablation processing data for thick-film composite anodes associated with high repetition rates ranging from 4.9 to 48.8 MHz. The patterning results are compared depending on the widths, depths, aspect ratios, the total appearance regarding debris and cracks, and the volume ablation rate. In high repetition rate laser patterning, the subsequent laser pulses interact with the material vapor plasma generated by the previous laser pulses, resulting in lower ablation depths and higher ablation widths. The increase in laser peak intensity leads to higher achievable ablation depths. Processing strategies are identified for two different ablation scenarios focusing on the pouch cells of a Volkswagen ID.3 and the Tesla 4680 cell.
Besteht ein Zusammenhang zwischen Extremwetterereignissen und dem Auftreten von Traubenwelke?
Authors: Raifer Barbara , Weitgruber Thomas , Schmid Arno , Haas Florian , Pertoll Günther
Published: October 2023

Traubenwelke ist eine physiologische Störung der Rebe deren Ursachen nicht eindeutig geklärt sind und die immer wieder zu gravierenden Ertrags- und Qualitätseinbußen führt. Ein Abgleich der Witterungsbedingungen mit dem Welkeaufkommen in den einzelnen Jahren in Südtirol zeigte, dass Phasen mit starker Hitze und fortgeschrittener Trockenheit vor Reifebeginn, die um Reifebeginn in Phasen mit größeren Niederschlägen übergehen, zur Entstehung von Traubenwelke beitragen dürften. Neben der frühzeitigen Ertragsentlastung deutlich vor Reifebeginn, erscheinen die Verbesserung der Bewässerungssteuerung und ein angemessenes Laubwandmanagement mögliche Ansatzpunkte zur Minderung der Schäden durch diese physiologische Störung.
Toolmakers for the Future
Authors: Hundley Peter , Winter Georg
Published: October 2023

Dr Georg Winter developed a systematic model for integrating environmental considerations into all aspects of company operations of his family-owned business starting in the late 1960s. This concept grew to be the world’s first Integrated System of Environmental Management. In this book Peter Hundley shows how Dr Winter, driven by a deeper need to preserve the natural environment, embarked on a crusade to convince other business owners and managers, policy makers and governments of the need for environmental management – and was successful. Today virtually every major company and many small and medium-sized enterprises have adopted his concepts. Winter played a major role in the foundation of the International Network of Environmental Management.
Homo homini lupus est?
Authors: Müller-Liedtke Catharina , Zentgraf Dana N. , Pannek Lisa , Lukas Gido , Boelcke Sascha
Published: October 2023

Vor dem Hintergrund der tradierten Sentenz „Homo homini lupus est?“ fand im September 2021 ein interdisziplinäres Symposium an der Christian-Albrecht-Universität zu Kiel statt, dessen Ergebnisse hier im Rahmen des gleichnamigen Sammelbandes präsentiert werden. Aus der Perspektive unterschiedlicher geisteswissenschaftlicher Disziplinen erfolgt eine Auseinandersetzung mit differenten, historisch kontingenten Entwürfen und Darstellungsweisen von Menschenbildern. In insgesamt sieben Beiträgen beschäftigen sich die Autorinnen und Autoren aus unterschiedlichen Perspektiven mit der menschlichen Natur, der Greifbarmachung des Fremden und/oder Anderen sowie der Konstruktion und Perzeption von Menschenbildern einschließlich ihrer medialen Überlieferung.
Effect of Different Feeding Methods on Milk Production and Composition of Lactating Punganur Cows
Authors: AMBATI CHANDRA MOULI , Devasena  , MVAN Suryanarayana , G GANGARAJU , MADA SNEHA SHARADA
Published: October 2023

The present experiment was conducted during January–August, 2021 at Livestock Research Station, Palamaner, Chittoor, Andhra Pradesh, India to study the effect of different feeding methods on production performance in lactating Punganur cows.  A lactation study of 90 days duration was conducted on 16 lactating Punganur cows which were distributed (CRD) into four treatment groups comprising of 4 animals each. Animals of Control group were maintained as per the feeding practice followed by the farmers rearing Punganur cows in Chittoor district (Hedge lucerne, Paddy straw and Concentrate mixture), T2 group fed with Super Napier grass Paddy straw and Concentrate mixture, T3 group fed with Paddy straw, concentrate mixture and UMMB and T4 group fed with TMR. The average FCM yield (kg d-1) was highest (p<0.05) in T4 followed by T3 or T2 and lowest in T1. The Protein and lactose content (%) of milk was highest (p<0.05) in T4 and lowest in T3, while Fat and SNF (%) remained unaltered. The efficiency of milk production (kg/kg FCM) of DMI and TDNI lowest (p<0.05) in T4, While CPI and DCPI lower (p<0.05) in T4 or T3 as compared to T2 or T1. The cost economics of milk production indicated that the feed cost (`) per kg FCM yield was lowest (p<0.05) in T3. The study concluded that the feed conversion efficiency in terms of DM, CP and Gross energy was highest for TMR group, while cost economics of milk production was better in Paddy straw, concentrate mixture, UMMB and TMR group.
Soil Properties Influence Vertical Distribution of Boron Fractions in Lateritic Soil
Authors: Sahu Mamta , Kundu Manik Chandra , C. P. Mohammed Nisab
Published: October 2023

The present study was conducted at Palli Siksha Bhavana (Institute of Agriculture), Visva-Bharati, West Bengal, India, during 2019-20 to evaluate the different fractions of boron (B) along depth and their relationship to some soil properties in lateritic soils of West Bengal, India. The sequential B fractionation scheme was followed to estimate B fractions in the studied soils. It was found that most of the soils fall under the sandy clay loam and clay loam soil textural categories. The soil pH was either categorized as extremely acidic or slightly acidic in nature and the range of low to medium organic carbon content was present. The studied soils’ CEC varied between 5.90 to 26.64 [C mol (P+) kg-1]. In the B fractionation study, it was revealed that, for uptake of plants, the readily soluble boron (Rs-B) is the most easily accessible fraction among all other fractions, and the residual boron (Res-B) fraction accounts for the major portion of total soil boron (Tot-B). Different soil properties of the study area greatly influenced the B fractions along soil depths. The contribution of different B fractions towards total soil B (Tot-B) B followed the order: residual boron (Res-B) >> oxide-bound boron (Oxd-B) > organically bound boron (Org-B) > specifically adsorbed boron (Sad-B) > readily soluble boron (Rs-B). The current study will be helpful for adopting the fertilizer management practices of boron-deficient lateritic soils (Alfisols).
Environmental Efficiency Assessment of Gas Supply Systems Based on Their Life Cycle Analysis
Authors: Bespalov V. I. , Gurova O. S.
Published: October 2023

Introduction. The most forward-looking method of choosing the optimal technology of the populated areas’ life support systems is the environmental and economic efficiency assessment of each type of such systems, wherein their life cycle assessment analysis is considered to be the primal stage. The scientific problem distinguished by the authors is the need to assess a life cycle of a gas supply system, which provides the organised supply and distribution of gas fuel to consumers. The study aims at finding the optimal combination of the environmental and economic factors for the gas control station variants by means of the life cycle analysis method followed by the environmental and economic efficiency assessment of the gas supply systems’ management and operation.

Materials and Methods. The authors' research was based on the object’s life cycle analysis method compliant with the quality management system, methods of selection theory and environmental and economic efficiency assessment of various objects.

Results. As a result of the research, it was determined that:

- a gas control station is of particular interest in terms of choosing the optimal technology of the organised supply and distribution of gas fuel to consumers;

- for gas control stations, the life cycle analysis and environmental and economic efficiency assessment method is the most appropriate one;

- a gas control station life cycle includes 11 stages, among which the operational stage is identified by the authors as the main one;

- for the selected variants of a gas control station layout, the environmental and economic efficiency assessment is made.

Discussion and Conclusions. The life cycle analysis of the gas control stations of the gas supply systems made it possible to distinguish the operational stage as the most significant one. For each of the two variants of such stations selected by the authors, the environmental and economic efficiency assessment was carried out. Upon calculation results, it was discovered that among the variants under consideration, a gas control station with an expander-generator unit has the highest environmental and economic efficiency and its layout could be widely implemented in future.
Building Information Modelling (BIM) Technologies in Construction and Architecture: International and National Experience
Authors: Dymchenko M. E. , Naumov A. A.
Published: October 2023

Introduction. The relevance of the research is induced by the gaps existing in the modern Architectural Science with regard to the conception of innovative digital technologies capable to optimise the reconstruction of the Sydney Opera House and the restoration of the St. John the Theologian Church in the Rostov region. Creating a digital twin of a building simplifies the work on its possible reconstruction. The research is targeted at studying the interrelation of the digital IFC models of the Sydney Opera House and the St. John the Theologian Church in Grushevskaya Cossack village, Rostov region, complemented by creation of their lifecycle-extending projects.

Materials and Methods. The methodological base of the research includes the traditional scientific methods, as well as the interdisciplinary approaches used in the modern Architectural Science. The work studies progress in the designing, reconstruction and modernisation principles of the objects of capital construction, on the example of the building information modelling technologies (BIM), as well as the experience of using computer technologies in reconstruction and reequipping the construction facilities. The computer model of the Sydney Opera House building, along with the photographic evidence of architectural elements, detail drawings, historical buildings’ facade fragments were used in the research for elaborating the St. John the Theologian Church model and designing the new facility — the gate bell tower.

Results. The excellence of BIM over the traditional designing methods has been established, which is expressed in the possibility to perform digital modelling and make calculations on re-equipping the facilities with the modern engineering systems aiming to bring the parameters of the operated equipment in compliance with the up-to-date level of requirements and assessments accepted for the current state of constructions and structures, which determines the range of restoration and reconstruction measures.

Discussion and Conclusion. The article describes the interrelation in structuring the transfer of building information model parameters among the differential programmes involved in the model creation using the IFC format. Application of advanced technologies in the architectural design and construction adjusts and rationalises the processes of construction, operation and reconstruction of the objects of capital construction aiming to manage their life cycle efficiently.
OWNERSHIP STRUCTURE AND AUDIT FEES IN INDONESIA
Authors: Novriansa Agil , Nurullah Asfeni , Aryanto Aryanto
Published: October 2023

Different types of ownership structures provide distinct corporate monitoring mechanisms, thus affecting the magnitude of company audit fees. This study aims to empirically examine the relationship between ownership structure and audit fees in Indonesia from the agency theory perspective. The sample comprises non-financial companies listed in the Indonesian capital market over 2015-2021. Based on the purposive sampling results, the final number of observations in this research is 931 company-years. This study employs pooled OLS panel data regression with robust standard error. Results indicate that non-executive director ownership, family ownership, financial institution ownership, and non-financial institution ownership are negatively related to audit fees. Additionally, managerial ownership and foreign ownership are positively related to audit fees. However, the study does not find a positive relation between government ownership and audit fees. Overall, the results of this research support the agency theory, with a focus on the assumption of convergence of interest.
THE INFLUENCE OF THE PROPORTION OF INDEPENDENT COMMISIONERS, MUSLIM DIRECTORS, EXECUTIVE CHARACTER, AND AGE OF THE MAIN DIRECTOR ON TAX AVOIDANCE WITH COMPANY SIZE AS A MODERATIONG VARIABLE (CASE STUDY: COMPANIES REGISTERED AT ISSI IN 2017-2021)
Authors: Pratiwii Intan
Published: October 2023

This study aims to determine the effect of the proportion of Independent Commissioners, Muslim Directors, Management Character, and Age of the Main Director on Tax Avoidance with Company Size as a Moderator in Companies Registered at ISSI in 2017-2021. This research is a quantitative research with secondary data in the form of panel data. The sampling technique is purposive sampling; The sample used is 32 companies registered at ISSI for the 2017-2021 period. The analytical tool used is the Eviews 9 application. The analytical method used is descriptive test, stationarity test, F test, t test, R2 test, classic assumption test, and MRA test. The results showed that the variable proportion of independent commissioners, Muslim directors, and the age of the main director had no effect on tax evasion. Meanwhile, the character of the executive ticket has a significant positive effect on tax evasion. Based on the Moderated Regression Analysis test, it shows that the variable size of the proportion of the company cannot moderate the influence of independent commissioners, Muslim board of directors, executive committee character, and age of the main director on tax avoidance.
PENGARUH PENERAPAN TEKNOLOGI INFORMASI DAN INOVASI TERHADAP KINERJA (STUDI PADA UMKM KABUPATEN ROKAN HILIR RIAU)
Authors: Desmiyawati Desmiyawati , Nasir Azwir , Hariadi Hariadi , Safrizal Safrizal
Published: October 2023

The Covid-19 pandemic has greatly impacted MSMEs where many MSMEs have experienced a decline in performance and even closed. In the new normal era, MSMEs are slowly starting to rise, business actors are utilizing online media or the use of technology and innovating to boost sales again. The goal of the research is to analyze the impact of information technology and innovation on MSMEs performance in the Rokan Hilir Regency of Riau. There are 34,036 registered MSMEs in the Rokan Hilir regency, according to the Regency Office of Cooperatives and MSMEs. In contrast, the study's sample size was determined using the Slovin and criterion-based sampling methods, and it totaled 100 MSMEs. The information gathered is called "primary data," and it consists of questionnaires and interviews with a small number of MSMEs participants. The data was analyzed using a robust linear regression model. The findings of the research hypothesis indicate that information technology and innovation have a positive and significant impact on MSMEs performance. MSMEs will find it much simpler to market their products with the help of information technologies such as the use of online media, expanding the reach of their product sales. Similarly, innovative approaches to the products the company manufactures give it an edge over the competition and boost MSMEs performance.
Assessment of the Antiadertional Potential of Gautheria procumbes Essential Oil against Staphylococcus aureus
Authors: Araújo de Sousa Samara Crislâny , Nogueira Maia Danilo , Da Nóbrega Holanda Júlia Kiara , Martins Maia Clara , Silva da Penha Elizandra , Tenório Guênes Gymenna Maria , Machado da Costa Figueiredo Camila Helena , Guedes de Sousa Rêgo Veneziano , Abílio Díniz Melquíades  de Medeiros Luanna , Tenório Guênes Gyselle , Mendonça dos Anjos Raline , Alves de Oliveira Filho Abrahão
Published: October 2023

Nosocomial pneumonia is an infection of the lung parenchyma caused by bacteria and acquired after a 48–72 hour period of patient hospitalization. Among the bacterial species causing this condition is Staphylococcus aureus, a pathogen that has proven resistant to commonly used antibiotics. In view of this, new therapeutic alternatives are necessary, and phototherapy presents itself as a field of ample possibilities for study. The objective of this research was to evaluate the anti-adherent potential of Gaultheria procumbes essential oil against a strain of Staphylococcus aureus. To evaluate the Minimum Inhibitory Adherence Concentration (MIC) of the oil, the Muller Hinton broth with 5% sucrose, the Sa 101 strain of the bacterial species under study, as well as, the positive control with 0.12% chlorhexidine were used. The material was incubated at 37 °C for 24 hours for reading using fuchsin. As a result it was observed that the essential oil of Gaultheria procumbes inhibited the formation of biofilm in the proportion of 1:128, showing to be superior to the anti-adherent potential of chlorhexidine digluconate that inhibited in the proportion of 1:8. From the data, it was verified the anti-adherent potential of the essential oil of Gaultheria procumbes against the strain of Staphylococcus aureus, and thus, it can be an effective therapeutic option in intraoral antisepsis and surfaces of materials inserted in the oral cavity.
Comparative Performance of Cobas 6800, 8800 with Cobas Ampliprep/TaqMan for HIV Viral Load Quantification
Authors: Okwuraiwe Azuka , Shaibu Joseph Ojonugwa , Gambari Aisha , Adeniyi Anthony , Onwuamah Chika
Published: October 2023

Human immunodeficiency virus (HIV) remains a serious public health challenge, especially in Africa. Viral load (VL) is the major marker in monitoring disease prognosis. With the increased demand for HIV VL, countries are equipping fewer laboratories with higher throughput machines based on real-time polymerase chain reaction (PCR) technology. They are fully automated, faster, possess improved assay sensitivity/specificity, higher throughput, more dynamic ranges and reduced contamination rates. This study sought to verify the analytical performance of two new Cobas instruments against the Cobas Ampliprep/TaqMan (CAP/CTM), used in tracking viral suppression in Nigeria. In a cross-sectional study, aliquots of clinical HIV viral load samples were assayed on the three platforms. Values obtained with the CAP/CTM were compared with those from Cobas 6800/8800 in a routine clinical setting. Between June and August 2019, 100 plasma samples collected were analysed in parallel using both techniques. Accuracy, inter-assay precision, linearity and carry-over effect analyses were conducted. The correlation coefficients of 0.997, 0.874, and 0.878 were obtained for C8800/C6800; C8800/CAP/CTM, and C6800/CAP/CTM, respectively. The level of agreement using a Bland–Altman plot was 94.2%. The systems produced good analytical performance, comparable and correlated with CAP/CTM. Therefore, Cobas 6800 and 8800 machines are suitable and acceptable for clinical samples; and recommended for high-volume laboratories.
Hubungan antara Konsep Diri dengan Penyesuaian Sosial Remaja Lembaga Kesejahteraan Sosial Anak (LKSA) di Makassar
Authors: Arnitasari Arnitasari , Puspita Dewi Eva Meizara , Zainuddin Kurniati
Published: October 2023

Social adjustment is one of the most difficult and important developmental tasks of adolescents to help adolescents deal with their environment and society. Social adjustment is influenced by various factors, one of which is self-concept. Positive self-concept can help teenagers to making good social adjustments. This study aims to determine the relationship between self-concept and social adjustment in adolescents who live in orphanage in Makassar. The research subjects were 91 teenagers from orphanage in Makassar, which were selected using accidental sampling technique. The measuring instrument used is the self-concept scale and the social adjustment scale. The data analysis technique in this research uses the spearman rho correlation test. The results of data analysis showed a correlation coefficient of 0.391 with a significance value of 0.000 (p<0.05). The value of the correlation coefficient (r=0.391) shows that there is a positive relationship between self-concept and social adjustment in adolescents from orphanage in Makassar. A positive value on the correlation coefficient shows that the higher the self-concept, the higher the social adjustment, or vice versa. Implications: This study implies that improving self-concept in adolescents is needed to improve their social adjustment in social environment.
Perbedaan Tingkat Kebahagiaan K-Popers dan Non K-Popers di SMK Negeri 1 Martapura
Authors: Maulida Leni , Haryadi Rudi
Published: October 2023

Happiness is a positive feeling that is felt by every individual, where this happiness has a relationship between pleasure, satisfaction, and happiness in life. The topic of happiness is interesting to discuss, especially if this topic of happiness compares between two groups in order to find out which group has the higher level of happiness.  This study aims to determine the differences between the two groups, namely groups of k-pop fans and non-k-pop fans. The sample in this study were 18 k-pop fans and 18 non-k-pop fans from SMK Negeri 1 Martapura. The measuring instrument used for this research is the Happiness Scale. Assumption test in this research is in the form of normality test and homogeneity test. In the Assumption Test results, the results obtained that the two groups, namely fans and non-fans of k-pop, show that the data is normally distributed.  Researchers analyzed the data using Two Independent Sample T-Test through an application, namely SPSS for windows version 25 with a result of 0.327 with a probability value of p > 0.05. From the results of the data analysis, it can be seen that there is no significant difference between the level of happiness of k-pop fans and non-k-pop fans.
RELATIONSHIP BETWEEN ANTHROPOMETRY AND CARDIORESPIRATORY FITNESS AMONG UiTM FOOTBALL PLAYERS
Authors: Ilias Noor Fatihah , Mohd Elias Siti Soraya , Zulkifli Muhammad Alif
Published: October 2023

Cardiorespiratory fitness (CRF) is one of the important components among football players. Physiological characteristics of individuals such as anthropometry may influence the level of CRF. Therefore, this study aims to determine the relationship between anthropometry and CRF among UiTM Football Players. A causal- comparative research design, consisting of 24 male participants representing Universiti Teknologi MARA Football Club (UiTM FC) were recruited. Anthropometry was measured via body weight and body height and CRF was measured using a bleep test and the result of the test was calculated to estimate maximum volume of oxygen (VO2 max). Pearson correlation was used to determine the relationship between anthropometry and CRF. Mean score for anthropometry was 65.17 ± 5.90 for body weight (kg) and 171.18 ± 4.66 for body height (cm). Mean score for CRF was 47.20 ± 4.34 (ml/kg/min). Results show a very weak relationship between body weight and CRF (r = 0.027). Meanwhile, there was a positive and weak relationship between body height and CRF (r = 0.265). In conclusion, evidence from this study showed no association between anthropometry and cardiorespiratory fitness. However, possibly a good anthropometry characteristic possibly gives the advantage of having good cardiorespiratory fitness. Ideal body weight and height is a potential physiological characteristic in determinants of cardiorespiratory fitness. Anthropometric does have a role as part of holistic monitoring of talented players in future development. Viewing the limitations of this study, further studies involving larger sample size are needed to find actual association with this hypothesis.
A COMPARISON STUDY: THE INFLUENCES OF ONLINE LEARNING ON HIGHER INSTITUTION STUDENTS’ LEARNING OF SPORT SKILL SUBJECTS DURING THE COVID-19 PANDEMIC
Authors: Murad Fatin Adira , Ahmad Kamal Azlan , Ab. Rahman Zarizi
Published: October 2023

The global educational system has been influenced as a result of the presence of Covid-19. Schools were driven to develop online learning programmes due of the COVID-19 pandemic. Additionally, despite the fact that open online courses have emerged as the primary focus of education reform in the higher education sector, physical education has never been offered any attention by educational reforms which is distance learning. This is despite the fact that distance learning has been actively developed and developed by both the government and schools. New norms demand another approach. Hence, the objectives in this study are to identify if there any differences in students’ well-being, the role of lectures and the effectiveness of sport skill subject learned during online learning among UITM Puncak Alam and MSU Shah Alam students during Covid-19. This study is a quantitative study. A set of questionnaire was distributed to 304 students of UITM Puncak Alam and MSU Shah Alam who took sport skills subject during pandemic covid-19. The findings show there was no significant difference in effectiveness of sport skill subject learned through out online between UITM (M=3.3967, SD=.854) and MSU (M=3.413, SD=.717) students; t (-1.75), p =.862 >0.05. In conclusion, both students and lecturers experience difficulties when participating in online learning. Tolerance and cooperation on the part of both the lecturers and the students are essential to the success of an online learning programme. During the times when classes are held online, it is essential that students and teachers are able to communicate effectively with one another.
A SURVEY ON SPORTS ACTIVITY INVOLVEMENT, MENSTRUAL HISTORY AND EATING DISORDERS IN MALAYSIAN ELITE FEMALE ATHLETES
Authors: Yunan Afiqah Khairunnisa , Ooi Foong Kiew , Ahmad Nur Syamsina , Abdul Raof Nur Dalila Adilah , Yeo Wee Kian , Ong Kong Swee , Borhan Janang Rohizat Achop
Published: October 2023

This study investigated sports activity involvement, menstrual history, and prevalence of eating disorders among Malaysian elite female athletes. A total of 50 female national and state level athletes with a mean age of 21.16 ± 2.31 years old participated in this study. They were 6 gymnasts, 17 swimmers, 5 cyclists, 7 long distance runners, and 15 silat athletes. The participants were required to answer the sports activity involvement questionnaire, menstrual history questionnaire, and Eating Disorder Examination Questionnaire (EDE-Q). The present study found that 44 (88%) of the total participants had regular menstruation, while 6 (12%) participants had irregular menstruation. The global score of EDE-Q subscales was 1.71 (60 to 65 percentile rank) in all the participants. Comparisons of measured variables between participants with regular menstruation and irregular menstruation showed that age in years at the beginning of training was younger in participants with irregular menstruation (9.83 ± 4.07) than participants with regular menstruation (11.84 ± 3.52). The global score of EDE-Q subscales was higher in participants with irregular menstruation (2.32; 75 to 80 percentile rank) than participants with regular menstruation (1.63; 60 to 65 percentile rank). In conclusion, the results of the present study show that participants with irregular menstruation seem to have higher global score of EDE-Q subscales, i.e., restrain, eating concern, shape concern, and weight concern. Irregular menstruation may be related to the young starting age of the athletes involved in training and the long total training period in years.
PHYSICAL ACTIVITY, SLEEP QUALITY AND DAYTIME SLEEPINESS AMONG IPOH YOUNG ADULTS
Authors: Raja Ismail Raja Ahmad Mustaqim , Syed Mud Puad Sharifah Maimunah , Raja Hussain Raja Nurul Jannat , Abu Kasim Nurul Ain , Mazaulan Mardiana , Mohamed Muhamad Noor
Published: October 2023

Poor sleep quality due to physical inactivity and excessive use of gadgets is one of the issues faced by young adults. Unfortunately, there is limited data regarding sleep quality characteristics among young adults’ population in Malaysia. Therefore, this study aimed to investigate the relationship between physical activity, sleep quality, and daytime sleepiness among young adults in Ipoh. Total of three hundred thirty-five (N=335) young adults in Ipoh (male= 191, female= 144) age between 18-25 years old were participated in this study. Participants completed the International Physical Activity Questionnaires-Short Form (IPAQ-SF), Pittsburgh Sleep Quality Index (PSQI), and Epworth Sleepiness Scale (ESS). Results indicated that there was no significant correlation between physical activity and sleep quality (p>0.05) or between physical activity and daytime sleepiness (p>0.05). However, a significant correlation was found between sleep quality and daytime sleepiness (p<0.05, r= -0.278). The findings demonstrated that most of the variables in this study are not interdependent to each other except between sleep quality and daytime sleepiness. Objective measurement should be considered in future studies to provide additional insight into variables information.
THE RELATIONSHIP BETWEEN SELF CONFIDENCE AND PSYCHOLOGICAL PERFORMANCE ON TRACK AND FIELD STUDENT-ATHLETES
Authors: Parnabas Vincent , Parnabas Julinamary , Parnabas Antoinette Mary
Published: October 2023

Psychological performance is a crucial ingredient for athletes’ success in sport. In many research reviews, researchers have found that low level of self-confidence can have deteriorating effect on athletes’ performance. However, to date there has been very limited research to examine self confidence level and psychological performance according to the levels of skills, especially on track and field athletes. The main aim of the study was to compare and correlate the self-confidence and psychological performance level among track and field athletes who represent national, state, district and university level during Sport between Universities event. Data was collected from 77 student-athletes, using Self Confidence and Psychological Performance Inventory (PPI). The results showed that national level athletes obtained the highest score on self-confidence, F (3, 77) = 15.212, and psychological sport performance F (3, 77) = 13.442. Positive correlation (r=0.007) existed between self-confidence and psychological performance. Based on the current results, it is recommended that sport psychologists, sport counsellors and coaches in Malaysia use the findings to design appropriate training programs to help athletes acquire higher level of self-confidence to enhance athletes’ psychological performance in sports.
THE EFFECT OF SLEEP QUALITY ON COGNITIVE FUNCTION AMONG IPOH YOUNG ADULTS
Authors: Syed Zubir Syed Murshid , Syed Mud Puad Sharifah Maimunah , Abu Kassim Nurul Ain , Md Yusoff Yusandra
Published: October 2023

A good sleep quality enhances both physiological and psychological functions. Despite the importance of sleep quality, it is one of the common issues faced by the young population due to modern lifestyle. The main purpose of this study is to investigate the effect of sleep quality on cognitive function (working memory and executive function) among Ipoh young adults. A total of thirty-two (n=32) healthy male Ipoh young adults aged (21.0 ± 1.0) years old participated in this study. The sleep quality was measured using Pittsburgh Sleep Quality Index (PQSI). Meanwhile, for cognitive function the N-Back task was used to measure working memory and the Wisconsin Sorting Card Test (WSCT) was used to measure executive function. The results of this study showed a significant effect of sleep quality on working memory (0-Back p = 0.011, 1-Back p = 0.001, 2 Back p = 0.008) and executive function (Category Achievement p = 0.001, Total Errors p = 0.010). These findings demonstrated sufficient evidence that sleep quality affects cognitive function (p < .05). Hence, sleep quality is associated with better cognitive function in young adults.
SELF-TALK ON SPORT PERFORMANCE AND SELECTED PSYCHOLOGICAL VARIABLES: A SYSTEMATIC REVIEW
Authors: Dali Mohd Saufi , Mohd Nor Mohad Anizu , Mohd Kassim Ahmad Fikri
Published: October 2023

Self-talk is a psychological skill training that improves motor performance and sports skills among athletes. Previous research has indicated differences between motivational self-talk and instructional self-talk in sports performance. However, there is a lack of attention paid to the effectiveness of self-talk toward psychological barriers. Therefore, the primary aim of this study was to examine past studies on the effect of self-talk on sports performance and to select psychological variables among athletes. Through a systematic review, we analysed the scientific production concerning the sports psychology of self-talk toward athletes. The process review was conducted by the PRISMA protocol and a search performed by using online data sources (Scopus, Web of Science, and Semantic Scholar), as well as, conference proceedings of possibly related papers. The search was limited to articles published within ten years and written in English. A total of 38 studies were analysed. Referring to a total of 38 studies (nine articles focused on the self-talk questionnaire, six articles on motivational self-talk, six articles on instructional studies, and 17 articles focused on both motivational self-talk). Based on this, only 9 studies satisfied the eligibility criteria related to sports performance and psychological effects. As a result, a sample of 9 studies was subjected to systematic quality analysis. The analysis results showed that negative self-talk decreases athletes’ performance. In addition, there is inconsistent evidence on the effect of motivational and instructional self-talk based on specific sports. Based on this review, instructional self-talk is beneficial for fine skills (free-throw basketball and penalty shoot-out), and motivational self-talk is effective for gross skill (running). Thus, it can be concluded that both motivational and instructional self-talk play an important role in enhancing motor performance.