bluuebunny/crossref_metadata_2025 huggingface dataset:
Enhancing Photocatalysis: Understanding the Mechanistic Diversity in Photocatalysts Modified with Single-Atom Catalytic Sites
Authors: Kruczała Krzysztof , Neubert Susann , Dhaka Kapil , Mitoraj Dariusz , Jánošíková Petra , Adler Christiane , Krivtsov Igor , Patzsch Julia , Bloh Jonathan , Caspary Toroker Maytal , Beranek Radim
Published: June 2023

Surface modification of heterogeneous photocatalysts with single-atom catalysts (SACs) represents an attractive approach towards enhancing the photocatalytic performance. However, our knowledge on the mechanism of photocatalysis enhancement at SAC-modified photocatalysts is still rather limited, which makes the rational design of high-performance photocatalysts based on SACs challenging. Herein, a series of photocatalysts for aerobic degradation of pollutants based on anatase TiO2 modified with various low-cost, non-noble SACs (vanadate, Cu and Fe ions) is reported. The most active SAC-modified photocatalysts outperform not only TiO2 modified with corresponding metal oxide nanoparticles, but also the state-of-the-art benchmark photocatalysts, such as platinized TiO2 or commercial P25 powders. A combination of in-situ EPR spectroscopy and theoretical calculations revealed that the best-performing photocatalysts modified with Cu(II) and vanadate SACs exhibit significant differences in the mechanism of activity enhancement, in particular with respect to the rate of catalysis of oxygen reduction. The superior performance of vanadate SAC-modified TiO2 is found to be related to the shallow character of the SAC-induced intragap states, which allows for both effective extraction of photogenerated electrons and fast catalytic turnover in reduction of dioxygen, and translates directly into diminished recombination. These results provide essential design guidelines for the development of efficient SAC-based photocatalysts.
Impact of Reverse Logistics on Firm’s Survival in Kumasi: The Role of Organisational Culture
Authors: Okyere S. , Osei A. , Akuh R. , Egyiri T.
Published: June 2023

Purpose: The study aimed to investigate the impact of reverse logistics on firms’ survival and the role of organizational culture. It ascertained the forms of reverse logistics practices adopted by the selected firms, and determined the effect of reverse logistics on organizational survival. It then assessed the influence of organizational culture on the relationship between reverse logistics and firms’ survival.                                                                     

Design/Methodology/Approach: The researchers used an exploratory design with a structured questionnaire with a sample size of one hundred and fifty-one (151). Purposive and snowball sampling techniques were used to contact five (5) firms in Kumasi and descriptive statistics were employed to analyse the data. Regression analysis was employed to examine the relationship between organizational culture and the survival of firms in the context of reverse logistics.  

Findings: The results show that remanufacturing, reusing, recycling, repackaging, redistribution, reselling, and repairing and reconditioning are some of the major forms of reverse logistics practiced in these firms. Also, reverse logistics have a positive effect on organizational survival. Again, the introduction of organizational culture depicted that variation in organizational survival depended more on organizational culture than reverse logistics.                                                                                                                                         

Research Limitation: The organizational culture, business environment, and cultural dynamics in Ghana may differ from other countries or regions. Therefore, the results of this study should be interpreted within the Ghanaian context, and caution should be exercised when applying them to other contexts.

Practical Implications: The study recommended the adoption by firms to use reverse logistics activities in order to survive and pay more attention to organizational culture.

Social Implications: The study encourages Ghanaian firms to adopt more sustainable practices within their reverse logistics operations.

Originality/Value: The study connects the domains of reverse logistics and firm survival. This integration adds novelty by examining how the organizational culture's impact on reverse logistics practices ultimately contributes to the survival and long-term success of firms in Ghana.
Multi-granularity active learning based on the three-way decision
Authors: Xiaogang Wu , Thitipong Thitipong
Published: June 2023

The reliance on data and the high cost of data labelling are the main problems facing deep learning today. Active learning aims to make the best model with as few training samples as possible. Previous query strategies for active learning have mainly used the uncertainty and diversity criteria, and have not considered the data distribution's multi-granularity. To extract more valid information from the samples, we use three-way decisions to select uncertain samples and propose a multi-granularity active learning method (MGAL). The model divides the unlabeled samples into three parts: positive, negative and boundary region. Through active iterative training samples, the decision delay of the boundary domain can reduce the decision cost. We validated the model on five UCI datasets and the CIFAR10 dataset. The experimental results show that the cost of three-way decisions is lower than that of two-way decisions. The multi-granularity active learning achieves good classification results, which validates the model. In this case study, the reader can learn about the ideas and methods of the three-way decision theory applied to deep learning.
Predicting extreme events in the stock market using generative adversarial networks
Authors: Labiad Badre , Berrado Abdelaziz , Benabbou Loubna
Published: June 2023

Accurately predicting extreme stock market fluctuations at the right time will allow traders and investors to make better-informed investment decisions and practice more efficient financial risk management. However, extreme stock market events are particularly hard to model because of their scarce and erratic nature. Moreover, strong trading strategies, market stress tests, and portfolio optimization largely rely on sound data. While the application of generative adversarial networks (GANs) for stock forecasting has been an active area of research, there is still a gap in the literature on using GANs for extreme market movement prediction and simulation. In this study, we proposed a framework based on GANs to efficiently model stock prices’ extreme movements. By creating synthetic real-looking data, the framework simulated multiple possible market-evolution scenarios, which can be used to improve the forecasting quality of future market variations. The fidelity and predictive power of the generated data were tested by quantitative and qualitative metrics. Our experimental results on S&P 500 and five emerging market stock data show that the proposed framework is capable of producing a realistic time series by recovering important properties from real data. The results presented in this work suggest that the underlying dynamics of extreme stock market variations can be captured efficiently by some state-of-the-art GAN architectures. This conclusion has great practical implications for investors, traders, and corporations willing to anticipate the future trends of their financial assets. The proposed framework can be used as a simulation tool to mimic stock market behaviors.
Smart Traffic Light Control System with Automatic Vehicle Speed Breaker
Authors:   Student, Dept.of CSE Vemana Institute of Technology,  Bangalore, India, Suresh Shreya , L Rashmi ,   Student, Dept.of CSE Vemana Institute of Technology,  Bangalore, India, Patil Sowmya ,   Student, Dept.of CSE Vemana Institute of Technology,  Bangalore, India, S Tanushree ,   Student, Dept. of CSE Vemana Institute of Technology,  Bangalore, India, M Dr.Ramakrishna ,   Head & Professor, Dept. of CSE  Vemana Institute of Technology Bangalore
Published: June 2023

The aim of the project is to design a smart traffic light control system interfaced with a barrier gate and an LDR based traffic light control system. When the signal timing changes a delay is provided with the help of a microcontroller, pop up barrier before the zebra crossing will open or close to allow vehicles to pass. When the signal is red the interfaced barrier gate closes and a buzzer notifies the closing of gate, thereby blocking the traffic but when the signal is green the same barrier opens and allows a proper flow of vehicles to avoid traffic congestion. We provide a time delay for all signals to change and buzzer action by using ESP32 microcontroller. ESP32 microcontroller is used for signal timing change as well as street light control according to LDR. Smart Street light which operates with the help of sensors Microcontrollers are programmed in such a way to adjust their timing and phasing to meet changing traffic conditions. The circuit, besides being reliable and compact, is also cost effective. This project presents the way of conservation of energy by reducing electricity wastage as well as to reduce the man power. The project uses light emitting diodes (LED) that do not consume an enormous amount of electricity. LDR is used as a sensor for the functioning of street lights effectively.
XIV International conference on bionics and applied biophysics
Authors: Mamilov S. O.
Published: June 2023

The article dedicated to the XIV International Conference on Bionics and Applied Biophysics, which took place on October 14–15, 2021 in Kyiv (Ukraine).
O ENSINO DE CIÊNCIAS E AS RELAÇÕES ÉTNICO-RACIAIS EM DISSERTAÇÕES E TESES (2009-2021): ENTRE AUSÊNCIAS E EMERGÊNCIAS
Authors: Brito Rafael Casaes de , Eugênio Benedito Gonçalves
Published: June 2023

Este artigo apresenta os resultados parciais de pesquisa em andamento, acerca das Relações Étnico-Raciais no Ensino de Ciências. O texto objetiva analisar de que maneira as dissertações e teses defendidas no Brasil, nos programas das áreas de Ensino e de Educação no período de 2009 a 2021, abordam a temática das Relações Étnico-Raciais no Ensino de Ciências. A pesquisa se configura como de Revisão Sistemática de Literatura (RSL) de caráter qualitativo. No processo de busca utilizou-se os descritores Relações Étnico-Raciais, Relações Raciais e Ensino de Ciências com o operador booleano AND. Tendo como aporte teórico os estudos decoloniais e as Epistemologias do sul, de Boaventura de Souza Santos, as análises foram realizadas em aproximação epistêmica com a Sociologia das ausências.  Os resultados apontam que as pesquisas sobre as Relações Étnico-Raciais no Ensino de Ciências são um campo em consolidação, permitindo evidenciar que no espaço da sala de aula faz-se necessário construir pedagogias engajadas, que tragam para o debate a expressiva contribuição dos povos subalternizados, a exemplo de negros e indígenas, para a construção do conhecimento científico, a fim de retirar da centralidade dos currículos a hegemonia brancocêntrica no Ensino de Ciências.
Reliability of Upper Extremity Functional Performance Tests for Overhead Sports Activities
Authors: Riemann Bryan L , Wilk Kevin E , Davies George J
Published: June 2023

Background

There is lack of consensus on which tests, particularly upper extremity functional performance tests (FPT) that should be used for clinical decision making to progress a patient through a rehabilitation program or criteria for return to sport (RTS). Consequently, there is a need for tests with good psychometric properties that can be administered with minimal equipment and time.

Purpose

(1) To establish the intersession reliability of several open kinetic chain FPT in healthy young adults with a history of overhead sport participation. (2) To examine the intersession reliability of the limb symmetry indices (LSI) from each test.

Study Design

Test-retest reliability, single cohort study.

Methods

Forty adults (20 males, 20 females) completed four upper extremity FPT during two data collection sessions three to seven days apart: 1) prone medicine ball drop test 90°shoulder abduction (PMBDT 90°), 2) prone medicine ball drop test 90°shoulder abduction/90° elbow flexion (PMBDT 90°-90°), 3) half-kneeling medicine ball rebound test (HKMBRT), 4) seated single arm shot put test (SSASPT). Measures of systematic bias, absolute reliability and relative reliability were computed between the sessions for both the original test scores and LSI.

Results

Except for the SSASPT, all tests demonstrated significant (p ≤ 0.030) improvements in performance during the second session. Generally, for the medicine ball drop/rebound tests, the absolute reliability was the highest (less random error) for the HKMBRT, next the PMBDT 90°followed by PMBDT 90°-90°. Excellent relative reliability existed for the PMBDT 90°, HKMBRT, and SSASPT, whereas fair to excellent relative reliability for the PMBDT 90°-90°. The SSASPT LSI revealed the highest relative and absolute reliability.

Conclusion

Two tests, HKMBRT and SSASPT demonstrated sufficient reliability; therefore, the authors’ recommend those tests can be used for serial assessments to advance a patient through a rehabilitation program as well as criteria for progression to RTS.

Level of Evidence

3
Isokinetic Training Program to Improve the Physical Function and Muscular Performance of an Individual with Partial Injury of the Medial Meniscus: A Case Report
Authors: Obara Karen , Silva Pedro , Silva Mariana , Mendes Fagner , Santiago Gabriel , Oliveira Ihan , Cardoso Jefferson
Published: June 2023

Background and Purpose

One of the best alternatives for the treatment of meniscal injuries in relation to surgical procedures, is exercise. This case report aimed to describe the effects of isokinetic training and a neuromuscular/proprioceptive exercise program on muscle performance and physical function in an individual after a rupture of the posterior horn of the medial meniscus.

Study Design

Case report.

Case Description

A 40-year-old man injured his right knee during a soccer match, with a partial lesion of the medial meniscus confirmed by magnetic resonance imaging. He completed an isokinetic training program in addition to exercises that targeted proprioception (22 sessions, 11 weeks) to improve physical function and performance, which were assessed before and after treatment and at a six-month follow-up. An individual with similar anthropometric characteristics was chosen to be used as a control for understanding the patient’s assessment values.

Outcomes

Muscular performance of the knee flexors and extensors was evaluated isokinetically using the Biodex System-4 in a concentric mode at angular velocities of 60, 120, and 300 °/s . The main results indicated that after 11 weeks, the peak torque normalized to body mass (PT/BM), at 60 °/s of the knee extensors remained unchanged (2.54 N.m/kg) (below the control value - 3.06 N.m/kg), and at the six-month follow-up, increased by approximately 20% (3.08 N.m/kg). For the hamstrings, at 60 °/s, an increase of 18 % occurred after intervention (1.98 N.m/kg) and by approximately 30 % at the six-month follow-up (2.12 N.m/kg) - values much higher than the control 1.55 N.m/kg). This increase in the PT/BM was also reflected in the Hamstrings:Quadriceps ratio (78 %) after treatment which improved at follow-up (68 %).

Discussion

The results showed that the isokinetic training and neuromuscular/proprioceptive exercises improved the muscle performance of the knee flexors and extensors, after eleven weeks of intervention, and remained (or continued to improve) at the six-month follow-up.

Level of evidence

5, single case report
Effect of Scapular Retraction on Lower Trapezius, Infraspinatus, and Deltoid Muscle Electromyographic Activity During the Side-Lying Abduction Exercise
Authors: Tsuruike Masaaki , Ellenbecker Todd S.
Published: June 2023

Background

The lower trapezius (LT) muscle, which stabilizes the scapula posteriorly during arm elevation, has been interesting to both clinicians and researchers for its importance in throwing-related shoulder rehabilitation and injury prevention.

Purpose

The purpose of this study was to investigate the electromyographic activity of the LT and other relevant muscles during scapular and shoulder activities in the side-lying position.

Methods

Twenty collegiate baseball players volunteered to participate in this study. Electromyographic (EMG) output of the lower trapezius, infraspinatus, posterior deltoid, middle deltoid, serratus anterior, and upper trapezius muscles were collected. All the subjects performed isometric resistance exercises in four arm positions: 0° horizontal abduction from the coronal plane (NEUT) with protraction (NEUT-PRO), 15° horizontal adduction from the coronal plane (HADD) with protraction (HADD-PRO), and NEUT with retraction (NEUT-RET), and HADD-RET in a side-lying isometric abduction exercise with two external loads: a 9.1 kg dumbbell and 40% of the manual muscle test (MMT). The subjects also performed two more isometric resistance exercises: supine protraction and side-lying external rotation (ER) of the glenohumeral (GH) joint in GH adduction at 90° of GH ER or with as much ER as possible. All raw EMG data were normalized to maximal voluntary isometric contraction (% MVIC) of the corresponding muscle.

Results

LT activity was significantly greater in HADD-RET with 9.1 kg than that of HADD-PRO (p < 0.001) (55 vs 21% MVIC) while middle deltoid muscle activity was significantly decreased in both NEUT and HADD-RET compared to that of NEUT and HADD-PRO (p < 0.001). In contrast, IS muscle activity was significantly increased in HADD-RET with 9.1 kg compared with that 40% MMT (p < 0.001) (41 vs 22% MVIC).

Conclusion

LT activity was modulated by changes in scapulothoracic and glenohumeral joint positioning during a side-lying isometric abduction exercise. These findings may help clinicians to select exercises to improve scapular muscle balance ratios during rehabilitation of the shoulder complex.

Level of Evidence

Level 3b, Controlled laboratory study
Performance, Test-retest Reliability, and Measurement Error of the Upper Limb Seated Shot Put Test According to Different Positions of Execution
Authors: Tagliarini Gustavo O , Junior José R. de S , Barbosa Glauber M, P , Secchi Leonardo L B
Published: June 2023

BACKGROUND

The unilateral Seated Shot-Put Test (USSPT) is an easy to apply, inexpensive tool that can be used to assess shoulder performance unilaterally. Two different positions of execution have been described in previous studies, however, differences regarding reference values and psychometric properties were not assessed.

PURPOSE

To investigate the performance, test-retest reliability and measurement error of the USSPT according to different positions of execution (floor versus chair) in overhead athletes. The hypothesis was that both positions would present similar values, good to excellent test-retest reliability and clinically acceptable measures.

STUDY DESIGN

Test-retest reliability.

METHODS

Forty-four overhead athletes performed the USSPT on the floor (USSPT-F) and on a chair (USSPT-C). Normative values were established according to gender, age, and dominance. Test-retest reliability was determined using Intraclass Correlation Coefficient and measurement error through Standard Error of Measurement, Smallest Detectable Change, as well as Bland and Altman plots.

RESULTS

Reference values for both positions were provided. Women performed better on the USSPT-C than USSPT-F. Excellent test-retest reliability 0.97 (0.89 – 0.99) for dominant side and 0.95 (0.80 – 0.98) for non-dominant side was found for the USSPT-F. Moderate to excellent reliability 0.91 (0.67 – 0.98) for dominant side and 0.74 (0.01 – 0.93) for non-dominant side was found for the USSPT-C. Presence of systematic error (14.76 cm) was found only for USSPT-C dominant (p=0.011).

CONCLUSION

Differences were found only for women with better performance on the USSPT-C. The USSPT-F presented higher reliability values. Both tests presented clinically acceptable measures. Presence of systematic error was found only in the USSPT-C.

LEVEL OF EVIDENCE

3
Posterior Shoulder Instability in Tennis Players: Aetiology, Classification, Assessment and Management
Authors: Watson Lyn , Hoy Gregory , Wood Timothy , Pizzari Tania , Balster Simon , Barwood Shane , Warby Sarah Ann
Published: June 2023

Background

Micro-traumatic posterior shoulder instability (PSI) is an often missed and misdiagnosed pathology presenting in tennis players. The aetiology of micro-traumatic PSI in tennis players is multifactorial, including congenital factors, loss of strength and motor control, and sport-specific repetitive microtrauma. Repetitive forces placed on the dominant shoulder, particularly combinations of flexion, horizontal adduction, and internal rotation contribute to the microtrauma. These positions are characteristic for kick serves, backhand volleys, and the follow-through phase of forehands and serves. The aim of this clinical commentary is to present an overview of the aetiology, classification, clinical presentation, and treatment of micro-traumatic PSI, with a particular focus on tennis players.

Level of Evidence

5
Perlindungan Hukum Terhadap Nasabah Bank Korban Kejahatan Skimming
Authors: Juita Subaidah Ratna
Published: June 2023

Pencurian uang nasabah bank melalui modus penggandaan kartu ATM (skimming) merupakan salah satu kejahatan perbankan. Tulisan ini merupakan hasil penelitian dengan memfokuskan pada kajian mengenai perlindungan hukum terhadap nasabah bank akibat kejahatan skimming.   Penelitian ini dilakukan dengan pendekatan yuridis normatif dengan menggunakan metode pengumpulan data melalui studi pustaka yang dilakukan terhadap data sekunder. Adapun data sekunder diperoleh melalui berbagai peraturan perundang-undangan, buku-buku, media internet, dan jurnal ilmiah guna mendapatkan hasil kajian mengenai kejahatan pembobolan kartu ATM (card skimming) dan perlindungan hukum terhadap nasabah bank yang dirugikan akibat kejahatan skimming.   Selanjutnya metode analisis data menggunakan analisis deskriptif. Dengan demikian, pendekatan yuridis-normatif dalam penelitian ini digunakan untuk menganalisis permasalahan yang berkaitan dengan perlindungan hukum terhadap nasabah bank akibat kejahatan skimming. Berdasarkan analisa, diidentifikasikan bahwa kejahatan pembobolan uang nasabah dengan metode skimming merupakan salah satu   kejahatan   berdimensi  high-tech (Cyber   Crime) di bidang Perbankan. Perbuatan tersebut termasuk dalam tindak pidana informasi dan transaksi elektronik yang melarang setiap orang dengan sengaja dan tanpa hak atau melawan hukum mengakses komputer dan atau sistem elektronik dengan cara apapun dengan tujuan untuk memperoleh informasi elektronik dan atau dokumen elektronik sebagaimana   diatur   dalam   Pasal   30   ayat   (2) Undang-Undang     Nomor     19     Tahun    2016 tentang   Perubahan   atas   Undang-Undang   Nomor 11 Tahun 2008 tentang Informasi dan Transaksi Elektronik (Undang-Undang ITE). Perlindungan terhadap nasabah korban kejahatan skimming dapat dilakukan dalam konteks penegakan hukum pidana dan penegakan hukum perdata.
The Implementation of the PCK-Based Electricity and Magnetism Textbook on Student Learning Outcomes
Authors: Boisandi Boisandi , Alsagaf Sy. Lukman Hakim
Published: June 2023

This study aims to investigate the implementation of electric-magnetic textbooks based on Pedagogical Content Knowledge (PCK) on learning achievement in the physics education IKIP PGRI Pontianak. The problem is that there needs to be more consistency between the mastery of theory and practice of students, especially in practice in the laboratory. Students need help to implement the theory they have learned into practice. The electric magnetic textbook has advantages: the pedagogic structure and content balance theory with practice. It has been adapted to the learning achievement of the magnetic electricity course in the physics education study program of IKIP PGRI Pontianak. The sequential embedded mixed-method design was used in this study to extract information from the research subject. The research was conducted at the Physics Education IKIP PGRI Pontianak. The object of this research is the student of Physics Education IKIP PGRI Pontianak Semester VI Academic Year 2021/2022. The data collection technique used in this study is an indirect communication technique with research instruments such as pretest-posttest questions and response questionnaires and interviews. The first qualitative stage obtained an average response of all aspects of 79% with high criteria. Learning effectivity is obtained based on the average normalized gain  of 0.57 with medium criteria. There is an increase in student learning achievement obtained from the response questionnaire after treatment by 81%; the category is very high. The interview showed the consistency of increasing student learning achievement on magnetic electricity.
Implementation of Discovery Learning Models to Improve Students Mathematic Learning Outcomes
Authors: Muhayati Erina Ika , Trisnawaty Wulan , Subaidah Subaidah
Published: June 2023

The aims of this research was describing about implementation of discovery learning model to increase students mathematics learning outcomes. It was a quantitative research with one shot case study design. Subjects of this research were students of Xth TEI 1 SMK Negeri 1 Driyorejo for the academic year 2021/2022. Data collection technique using three essay questions with data analyze technique include validity test and completeness test of Minimum Completeness Criteria. In this research, students are given 6 steps of discovery learning. There are stimulation, problem statement, data collection, data processing, verification, and generalization. The research revealed that students learning outcome using discovery learning having increase from 30 to 89. It could be conclude that discovery learning model can improve students' mathematics learning outcomes.
Student Extraneous Load Analysis in Online-Based Plant Tissue Structure Learning
Authors: Ermayanti Ermayanti , Susanti Rahmi , Santoso Lucia Maria , Huzaifah Siti , Deluciana Chelsea Novalin
Published: June 2023

This study aims to determine the cognitive load of students in online-based plant anatomy learning. The research was conducted at the Biology Education Study Program at a State University in Palembang, Indonesia. The research subjects were Biology Education students (n=73) who contracted the plant anatomy course. The instrument used to determine students' mental effort in understanding plant anatomy material is a questionnaire with a Likert scale with five answer choices: very easy (VE), easy (E), moderate (Md), difficult (D), and very difficult (VD). The aspects measured are (i) identifying the type of tissues and its characteristics by observing 2D and 3D images; (ii) analyzing the interrelationship of tissues structure and it function; (iii) identifying the structure of the constituent tissues in several plant organs, and (iv) spatial thinking related to the structure of plant tissues. The research data shows that the highest percentage in all aspects is in the medium category (MD), which ranges between (31.14% - 47.69%), which means that the learning carried out is not too burdensome for students in these four aspects. However, the data also shows that in the second aspect, namely the ability to analyze the relationship between structure and function, 31.64% of students stated that it was difficult. This is due to the complexity of the material related to the structure and function and the ineffectiveness of the media used in online-based learning
Effect of Electronic Modules on Self-regulated Learning and Cognitive Learning Outcomes on Chemical Bonding Material
Authors: Respati Anugrah Anang , Atun Sri
Published: June 2023

This study aims to the effect of guided inquiry-based electronic modules on self-regulated learning and cognitive learning outcomes. The research design uses a quasi-experimental post-test only. This research was conducted on students of class X Natural Science in Yogyakarta using the cluster random sampling technique. The instrument used in this research is a self-regulated learning questionnaire and cognitive learning outcomes test. The data analysis technique uses Hotelling’s T-Test to test whether there are differences in self-regulated learning and cognitive learning outcomes with the implementation of electronic modules. The results show that the significance value is 0.002 < 0.05. This means that there is a difference in self-regulated learning and cognitive learning outcomes between students who use the guided inquiry-based electronic module and those who do not use the electronic module.
Student’s Learning Outcomes and Scientific Literacy Improvement Through the Implementation of Reading to Learn and Discovery Learning Models
Authors: Berliana Gadis Yunita , Sugiyanto Sugiyanto , Fardhani Indra
Published: June 2023

This study aimed to determine the effect of the implementation of two learning models, discovery learning and Reading to Learn on scientific literacy skills and student learning outcomes on the excretory system material. This research was conducted in a Junior High School in the city of Malang involving 29 students of 8th grade. This study used pre-experimental research design (one group pretest-posttest design). Data were collected through pretest, posttest, and worksheet questions. Data were analyzed using non-parametric statistical tests (Wilcoxon test), n-gain and d-effect size. The findings revealed that there was an increase in scientific literacy skills and student learning outcomes as indicated by the n gain of 0.58 (upper medium) and 0.77 (high). The use of discovery learning and Reading to Learn models has been shown to have a strong positive/effective impact on improving students' learning outcomes and scientific literacy skills, as shown by the d effect size values of 2.13 and 3.28, which fall into the large effect category
Analysis of the Use of Android-Based Edusan Learning Media on Students' ICT Literacy Skills
Authors: Indahsari Hafizha Kurnia , Suyanta Suyanta , Yusri Hilman , Khaerunnisa Nina , Astuti Sri Rejeki Dwi
Published: June 2023

This study aims to describe students’ digital literacy after learning science using android-based Edusan learning media. The research was conducted at SMP Negeri 2 Mlati using descriptive analysis research method.  Edusan application based on android is used as a medium for delivering teaching materials and evaluation tools in the learning process. The data collection technique in this study was a questionnaire.  The dimensions of digital literacy analysed in this study are creativity, collaboration, communication, the ability to find and select information, critical thinking and evaluation, e-safety, functional skills and beyond. Results The research shows that students have a very good category in the digital literacy dimension. Therefore, it can be concluded that the use of   Edusan android-based learning media can foster and train students' ICT literacy
Completeness and Accuracy of Immunization Status and Smoking Habits Associated with the Incidence of Acute Respiratory Infections in Toddlers in the Kaliasin Health Center Working Area
Authors: Daka Rohman , Aryastuti Nurul , Nuryani Dina Dwi , Aryawati Wayan
Published: June 2023

ARI is the leading cause of infectious disease morbidity and mortality in the world. Nearly four million people die from ARI every year. According to WHO in 2016, the morbidity and mortality rate of ARI is quite high, especially in toddlers. ARI is the number one cause of infant mortality in Indonesia. South Lampung Regency ranks first in the number of ARI cases in children under five every year. The purpose of this study was to determine the factors associated with the incidence of ARI in toddlers. This study is a quantitative study with Cross Sectional design with a population of 2,578 toddlers and a sample of 126 toddlers. The sampling technique used was purposive sampling using univariate and bivariate analysis tests using Chi Square. Toddlers who experience ARI 39.7%, toddlers who have complete immunization status 62.7%, toddlers who have completeness and accuracy of immunization status 27.0% and who have smoking habits 57.9%. There is a relationship between completeness of immunization (p-value = 0.000) with OR 4.450 (CI 2.057-9.624), completeness and accuracy of immunization (p-value = 0.000) with OR 5.553 (CI 1.976-15.607) and smoking habits (p-value = 0.000) with OR 9.419 (CI 3.747-23.677) with the incidence of ARI in toddlers. It is expected that health workers can increase promotive and preventive efforts to the community in the form of counseling or socialization to provide knowledge related to ARI disease
Development of Science’s e-Module Based on Qur’an Integration-interconnection and Spiritual Intelligence (QISI) for Solar System Learning
Authors: Ramadhan Teuku Muhammad Hary , Halim A , Mustanir Mustanir , Huda Ismul , Evendi Evendi , Saleh Fauzi , Sofyan Fahmi , Yusrizal Yusrizal , Safrida Safrida
Published: June 2023

This study aims to develop a valid, practical, and effective science e-module based on QISI used in the learning process of the solar system. The research method used in this research is Research & Development (R&D) with the ADDIE development model (Analyze, Design, Development, Implementation, and Evaluation). This research was conducted at SMP IT Luqmanul Hakim Aceh with a sample of 31 seventh-grade students. Sampling using a purposive sampling technique. The results showed that the validity test obtained a percentage of 87.40% with very valid criteria. In addition, the results of the practicality test by the science teachers obtained a percentage of 86.88% with very practical criteria, then the results of the practicality test by students obtained a percentage of 80.78% with practical criteria. Science e-module is effectively used in learning, with the result of obtaining an N-gain value of 0.62. So, it can be concluded that the science e-module based on QISI has been successfully developed which is very valid, practical, and effectively used in solar system learning
Effects of Keji Beling (Strobilanthes crispus) Crude Leaves Extract Against Aeromonas hydrophila Bacterial Infection in Vitro
Authors: Gerrine Genesia , Prajitno Arief , Fadjar Mohamad , Kenitasari Rahmalia Eka
Published: June 2023

Keji beling leaves (Strobilanthes crispus) can be the solution to cure the fish that infected by Aeromonas hydrophila because it contained active compounds. The purpose of this study was to determine the active compounds contained in the crude extract of keji beling leaves (S. crispus) and their ability to inhibit the growth of A. hydrophila. The tests which are used in this study were phytochemical test, MIC test, disk diffusion test, and SEM test. Phytochemicals analysis showed the presence of active compounds are flavonoid, alkaloid, tanin, and triterpenoid. The result of MIC test showed that concentration of 100 mg/l with a value of 0.389 was the lowest absorbance of the keji beling (S. crispus) crude leaves extract. The inhibition test used disk diffusin test with five concentrations of keji beling (S. crispus) crude leaves extract with three replications: 50 mg/l, 100 mg/l, 150 mg/l, 200 mg/l, and 250 mg/l, with the observation time of 24 hours post-incubation and 48 hours post-incubation. The concentration of 250 mg/l had the highest inhibition zone. The result of SEM analysis showed that keji beling (S. crispus) crude leaves extract can damage the cell walls of A. hydrophila and lysis the bacterial cells.
Processing of Leachate Water into Liquid Fertilizer (POC) for Increasing the Economy of Chrysanthemum Farmers
Authors: Nasirudin Nasirudin , Rukmini  , Diananto Prihandoko  , Masrur Alatas  , Yeremias Yanuarius Sedik
Published: June 2023

The waste problem is a national problem that has derivative impacts, including the accumulation of waste in landfills which also causes pollution of locations around landfills for leachate production. TPST Piyungan which is the largest waste management site in Yogyakarta has a leachate treatment system but it does not work optimally. One of the leachate treatment technology options is a wetland system that can not only stabilize leachate by reducing heavy metal levels but can also produce liquid organic fertilizer (POC). This study aims to determine the performance of the wetland system using water bamboo to process leachate into liquid organic fertilizer and to determine the impact of testing on flower plants. Besides that, respondent analysis and economic analysis were also carried out. The results showed that the performance of the wetland system produced leachate NPK levels that were still below the standard liquid organic fertilizer, but its application to flower plants showed significant results in helping flower growth. The economic analysis also shows positive parameters and shows that this system is feasible for business development and has promising market potential.
Development of STEM-Based E-LKPD on Senses System Material to Improve Creative Thinking Ability
Authors: Tarihoran Sri Yanti , Anas Nirwana
Published: June 2023

Creative thinking is an important problem in learning. One of the learning approaches that can be used to improve creative thinking skills is the STEM learning approach. This is effective if it is supported by teaching materials in the form of E-LKPD. This study aims to determine the development of STEM-based E-LKPD learning media on human sensory material to improve the creative thinking skills of class XI students at SMA/MA. The method used in this study uses the Research and Development (R&D) method with a 4D model. The results of data analysis were carried out using a validation sheet in the form of a response questionnaire. The validation results from media experts get a percentage of 80% in a very valid category, from material experts get a percentage of 97% in a very valid category, from question instrument experts get a percentage of 88% in a very valid category and from questionnaire experts get a percentage of 100% with very valid category. The practicality test obtained a percentage score of 100% from school teachers in the very practical category and 98.2% from students in the very practical category. The N-Gain results in this study obtained a value of 0.6 in the moderate category. The conclusion of this study states that the STEM-based electronic Student Worksheet (e-LKPD) is very valid, practical and effective
Development and Validation of STEM-Based Science Digital Worksheet on Object Motion Material for Junior High School Students
Authors: Laksono Agung , Rusilowati Ani , Widiyatmoko Arif
Published: June 2023

In the present day, it is anticipated that students possess the ability to effectively utilize digital technology to process information and address contextual problems. One possible course of action would be to develop a STEM-based Science Digital Worksheet on the Material of Object Motion. The STEM aims to facilitate the application of contextual problem-solving techniques through the utilization of students' literacy and numeracy skills. The scope of this study encompasses the field of research and development, commonly referred to as R&D. The R&D model employed ADDIE. One of the stages defined in this model is the developmental stage, which is intended to assess and evaluate the product through expert validation tests. The validators comprised of educators in the field of Integrated Science at FMIPA Semarang State University, ICT experts at SMA Negeri 1 Kudus, and science teachers at SMP 2 Dawe Kudus. The obtained media validation results from three experts yielded a value of 95%, while material experts obtained 96.67%. As a result, both were classified as highly feasible. It can be concluded that the Science Digital Worksheet is appropriate for use in learning activities
Ultrasound and first-trimester vaginal bleeding: A clinical study.
Authors: Abdul Maajid Khokhar  , Ayyaz Khan
Published: June 2023

Objective: To review the clinical indications and different causes of first-trimester vaginal bleeding by ultrasound. Study Design: Cross-sectional study. Setting: Department of Radiology, Faisal Hospital, Faisalabad, Pakistan. Period: March 2022 to June 2022. Material & Methods: A total of 150 female patients aged between 16-45 years with vaginal bleeding in the first trimester (gestational age up to 12 weeks) were included in the study. Clinically tested patients were found to be sent for ultrasound examinations. Both clinical findings and ultrasound were related. The Chi-square test was used to measure the association between vaginal bleeding and gestational age. Results: In a study of 150 patients, it was estimated that 105 patients (70%) were pregnant with an assisted ultrasound. However, 80 patients (76%) out of 105, showed a variety of abortions; 32 (40%) were threatened abortion, 28 (35%) were incomplete abortions, 12 patients (15%) had a complete abortion, and 8 patients (10%) had blighted ovum. However, 25 patients (23.8 %) out of 105 showed different pregnancies; 15 (14%) patients were pregnant with ectopic and 10 patients (10%) were pregnant orally. Conclusion: It was concluded from the study that most cases were in the age group of 21-30 years (39%) as compared to the others. However, 80 cases (76%) were various types of abortions and 105 patients (70%) were multigravida. This study found an association between vaginal bleeding (abortion and ectopic pregnancy) and gestational age (<10 weeks and >10 weeks) which was found to be statistically significant (p=0.005).
Maxillary sinus and alveolar bone levels in subjects with skeletal anterior open bite: Is there room for mini-implant supported molar intrusion?
Authors: Maheen Ahmed  , Waqar Jeelani  , Mubassar Fida
Published: June 2023

Objective: To compare the maxillary sinus (MS) and alveolar bone (AB) heights in adult subjects with normal occlusion and those with skeletal anterior open bite (AOB). Study Design: Cross-sectional. Setting: Aga Khan University Hospital, Karachi. Period: December 2020 to June 2021. Material & Methods: The study was conducted on the pretreatment orthodontic records of sixty adult subjects (30 males, 30 females). Skeletal high angle cases with AOB >1 mm were included in skeletal AOB while a matched sample with normal dental and skeletal relationships was included in normal occlusion group. The MS and AB heights were measured on lateral cephalograms and orthopantomograms at interdental regions from maxillary 1st premolar to 2nd molar. The MS and AB heights were compared between males and females and between skeletal AOB group and normal occlusion groups using independent sample t-test. Results: The mean age of the subjects with skeletal AOB (22.68±4.04 years) and those with normal occlusion (23.19±4.68 years) were comparable (p=0.653). In general, MS height and AB heights were greater in males than females. There was no significant difference in the MS height between the skeletal AOB and normal occlusion groups for both genders (p>0.05). However, both males and females with skeletal AOB had greater AB heights between 2nd premolar and 1st molar and between 1st molar and 2nd molar than those with normal occlusion (p<0.05). Conclusion: The MS height in skeletal AOB and normal occlusion groups were comparable. Subjects with skeletal AOB had maximum AB height mesially and distally to maxillary 1st molar that was significantly greater than those with the normal occlusion.
Frequency of hyponatremia in decompensated chronic liver disease patients.
Authors: Muhammad Akram  , Farid ud Din  , Syed Zain Ul Abidin  , Ghulam Jilani  , Muhammad Waqas Saeed
Published: June 2023

Objectives: To find the frequency of hyponatremia in decompensated chronic liver disease patients. Study Design: Descriptive, Cross-sectional study. Setting: Department of Medicine, Bahawal Victoria Hospital, Bahawalpur, Pakistan. Period: October 2022 to March 2023. Material & Methods: A total of 118 patients of either gender aged 40-70 years having decompensated chronic liver disease were analyzed. Five ml blood was drawn under aseptic environment and was properly preserved, and sent to the hospital laboratory for analysis of sodium levels. Frequency of hyponatremia was determined and hyponatremia was labeled as serum sodium level < 130 mEq/liter. Results: In a total of 118 patients, the mean age was 53.69 ±7.11 years (ranging between 40-70 years) while 69 (58.5%) patients were aged between 41 to 55 years of age. There were 64 (54.2%) male and 54 (45.8%) female patients. The mean duration of chronic liver disease was 10.49±3.48 months whereas the mean BMI was 30.26±2.50 kg/m2. The mean serum bilirubin, serum globulin, serum albumin, mean albumin to globulin ratio, PT, child Pugh score and serum sodium levels were 5.43±2.41 mg/dl, 4.87±1.89 g/dl, 2.13±0.87 g/dl, 1.65±0.73, 11.33±3.41 seconds, 8.12 ± 2.68 and 118.67±9.87 mEq/liter respectively. The frequency of hyponatremia in patients with decompensated liver cirrhosis was found in 39 (33.1%) patients. Conclusion: This study concluded that frequency of hyponatremia in decompensated chronic liver disease patients is quite high.
Assessing the sustainable incentive on worker performances as a means of conquering new frontiers in Enugu state, Nigeria
Authors: Nathan Ndubuisi Agu  , Francisca Nkachukwu Okeke  , Uchechi Vanessa Alintah-Abel
Published: June 2023

Incentive is one of the motivational approach, which has an energizing force that induces or compels and maintain performance of every worker. Thus, it will be of important if the impact of standardized and sustainable incentives is implied to every worker in construction industry. The aim of the paper is to assess the sustainable incentive on worker performances by assessing the relative significance index score for different types of incentives; and identifying the average level of impact for the three groups of incentives for workers’ performances. The targeted population of this study were contractors, architects, quantity surveyors, engineers in Enugu state. Data collection was done through a questionnaire survey self-administered on 80 randomly selected construction professionals involved in a nearly completed or recently completed construction projects. This was analyzed using descriptive statistics and analyses of variance (ANOVA). Results of the study indicate a disparity of the ranking of the degree of occurrence and impact among the group. Based on the composite of incentive factors the study established its likelihood of various occurrence of both financial and non-financial incentives. The study recommended that those with highly impacted incentives should be put in place in which it will become a means of conquering the new frontier with a solid sustenance. Finally, the study also concluded that they should implement an efficient, standardized and effective of the three groups of the incentives on workers in order to gear toward fully sustainable commitment, solid participation and loyal performances.