bluuebunny/crossref_metadata_2025 huggingface dataset:
Antibacterial activities of three species of mangrove leaves extract against Staphylococcus aureus and Escherichia coli
Authors: Rahmawati Ayu , Nursyafni Nursyafni , Herly Moh. Azhari Herly Azhari , Indriani Lusi , Lovena Tri Nova , Khairiah Kinanti Bahy , Aprilia Indri
Published: January 2024

The increasing incidence of infections and drug resistance has led scientists to seek approaches towards medicinal plants that are potentially effective against many microorganisms. Therefore, this study was planned to assess the antibacterial activity of 3 mangrove species (Scyphipora hydrophylaceae C.F.Gaertn., Lumnitzera littorea (Jack) Voigt and Avicennia alba Blume) against Staphylococcus aureus and Escherichia coli bacteria. This study used the disc diffusion method to measure the diameter of inhibition at several concentrations of mangrove leaf ethanol extracts, namely 15%, 10%, 5%, 2.5%, 1.25% and 0.625% b/v as well as positive control cefadroxil for bacteria and DMSO as negative control. The test results showed that ethanol extracts of mangosteen leave Scyphipora hydrophylaceae C.F.Gaertn and Lumnitzera littorea (Jack) Voigt had a solid response to Escherichia coli bacteria and moderate potential against S. Aureus bacteria—no antibacterial activity against both test bacteria for Avicennia alba mangrove. This study concludes that Scyphipora hydrophylaceae C.F.Gaertn and Lumnitzera littorea (Jack) Voigt have potent antibacterial activity against Escherichia coli, but Avicennia alba has no antibacterial activity.
Analysis of Pharmacists' Knowledge Level on Drug Management with The Availability of Medicine in Community Health Centers in Padang City
Authors: Juwita Dian Ayu , Nasif Hansen , Viviani Ivana Regita
Published: January 2024

The availability of medicine is one of the factors that can be employed to assess the quality of community health centers and determine customer satisfaction. Pharmacists require a strong foundation in drug management knowledge to ensure the medicine availability. Proficient drug management can enhance the rational use of medications, promote rational prescription practices, and improve drug utilization efficiency. This research aims to ascertain the pharmacist's knowledge level and the availability of medicine while also exploring any potential correlations between pharmacist knowledge and medicine availability. This research adopts a non-experimental study design with cross-sectional data collection. The research sample was selected using purposive sampling techniques, employing a questionnaire to assess pharmacist knowledge levels, as well as Drug Usage Reports and Drug Request Sheets (LPLPO) to evaluate the availability of medicine levels. Data analysis involved the Chi-Square test and Spearman Rank test. The study results indicated that the majority of pharmacists possessed a high level of knowledge (73.7%), while most community health centers have a moderate level of medicine availability (73.7%). The Spearman Rank test revealed no significant correlation between pharmacist knowledge levels and the availability of medicine.
Correlation between Family Support and Health Professional Education on Tuberculosis Patient Compliance at Public Health Centers Tasikmalaya
Authors: Anshar Doni , Fadhilla Genialita , Wulansari Wulansari
Published: January 2024

Tuberculosis prevalence in Indonesia is still high, as 824,000 people are infected with Tuberculosis (Indonesia Basic Health Research 2022). This shows that Tuberculosis is still difficult to control due to various factors, including patient compliance. Patient compliance can be influenced by family support and health professional’s education about Tuberculosis therapy, which plays an important role in increasing knowledge of correct therapy for patients and families. This study examines the influence of family support and health professional education on tuberculosis patient compliance. This is a descriptive study with the cross-sectional method. Data was collected from 52 Tuberculosis patients who met the inclusion criteria using a questionnaire. The result shows that family support and health professional education had very good scores (84.6% and 46.2%) on Tuberculosis patients. This affects patient compliance is very good (82.7%). Based on correlation results, it shows that there is a direct influence of family support (p-value<0.05). At the same time, there is an indirect influence of health professional education on patient compliance (p-value>0.05). This shows that family support has a greater direct influence than health professional education on tuberculosis patients’ compliance. However, health professionals still play an important role because the patient's family also receives education from health professionals.
Treatment Duration and Drug Regimen Correlation with Side Effects Incidence in Drug-Resistant Tuberculosis (DR-TB) Patients at Pulmonary Hospital
Authors: Indriani Lusi , Renitia Gita Iftitah , Setiani Lusi Agus
Published: January 2024

The bacteria Mycobacterium tuberculosis causes Drug-Resistant Tuberculosis (DR-TB). Excessive use of drugs can result in drug resistance with various side effects. This study aimed to analyze the correlation between the treatment duration and drug regimen with the side effects incidence in DR-TB Patients at Pulmonary Hospital Dr. M. Goenawan Partoidigdo (RSPG) Bogor. This is an observational study with a cross-sectional design. Subjects were selected with purposive sampling methods based on inclusion and exclusion criteria. The research showed that DR-TB patients were mostly male (50.2%) with productive age (46.1%). The most common DR-TB treatment experienced by patients in the advanced phase, generally for 9-24 months (75.3%), and the type of drug side effect most experienced was gastrointestinal disorders, that is nausea (55.1%). The use of standard conventional drug regimens mostly in Z, E, Eto, Km, Lfx, Cs (Pyrazinamide, Ethambutol, Ethionamide, Kanamycin, Levofloxacin, Cycloserine) of 51.4%. The chi-square analysis showed no significant correlation between the treatment duration and the incidence of side effects. At the same time, there was a meaningful correlation between the drug regimen (short-term, long-term, and conventional standard regimen) and the side effects incidence. The suspected drugs causing gastrointestinal side effects were pyrazinamide, ethambutol, ethionamide, and levofloxacin. The side effects of arthritic arthralgia were suspected to be caused by pyrazinamide, ethionamide, and levofloxacin.
Self-Medication Pattern among Customers in a Community Pharmacy
Authors: Almasdy Dedy
Published: January 2024

Self-medication is a common practice carried out by the community. This practice is increasingly popular due to the increasing number of OTC products being marketed and the increase in public knowledge due to advances in information technology. This cross-sectional research was conducted at a community pharmacy by collecting data using a structured interview approach to document self-medication practices carried out by customers. A total of 285 customers were interviewed. The Mean age was 30.54 years old. The majority of them were female (74.4%), students (57.2%), and had secondary-level education (72.3%). The majority of the customers came to the pharmacy to continue their medicines which were bought before the day of the visit (60.4%). The dominant factor that influenced the customers to buy the medicines was the experience of using previous medicines (34.9%). Related to a question about customer's adherence to drug regimen, the majority of them (71.5%) answered 'always' and 'often', meanwhile to question about customers' practice if the medicine could not produce the desired effect, the majority of them (75%) answered 'stopping the medicines and seeking professional advice's. The total number of medicines that were bought by the customers were 375 items (mean 1.27 + 0.51), consisting of scheduled poison medicines, OTC medicines, vitamin/mineral supplement, and phyto-medica.
Effect of quercetin and avobenzone concentration on physical characteristics and in vitro activity of sunscreen
Authors: Wisudyaningsih Budipratiwi , Barikah Kuni Zu’aimah , Lita Fernanda Indah
Published: January 2024

Quercetin is a flavonoid compound that has great potential activity, one of which is a chemical absorber of ultraviolet (UV) radiation, especially UV B radiation. The objective of the present study was to optimize quercetin as a UV B absorber combined with avobenzone as a UV A absorber in sunscreen cream formulation. Optimization was carried out by factorial design method using Design Expert 11.0 Software, with viscosity, pH, Sun Protection Factor (SPF) value, Percent of Erythema Transmission (% TE), and Percent of Pigmentation Transmission (% TP). The results showed that the quercetin factor was decreasing viscosity, pH, % TE, and % TP value but increasing the SPF value of the formulation. Avobenzone factor affected the increase of viscosity, pH, and SPF value but decreased the % TE and TP value. The interaction of quercetin and avobenzone significantly affected decreasing the viscosity and pH value but increased the SPF < % TE, and % TP value. Evaluation of optimum formula obtained by the overlay contour plot on the software resulting viscosity cream at 338,33 dPas, pH value at 5,40; SPF value at 33,31; % TE at 2,62x10-3 % and % TP at 1,56x10-5 %.
Formulation of Anti-Blackhead Rubber Mask from Purified Gambier (Uncaria gambir [Hunter] Roxb.)
Authors: Akrami Hafizatul , Syafni Nova , Agustin Rini
Published: January 2024

The purified was isolated from  Uncaria gambir [Hunter] Roxb. that contains more than 90% of catechins. Its antioksidant  and antibacterial properties have  potential to  formulate  as cosmetics. Dry form formulation of cosmetic was one approach to minimize cathecins degradation in a product.  In this study, three formulation of rubber mask containing 5% of purified gambier was done. . Each formulation was formulated with calcium sulfate, propylene glycol, magnesium carbonate, citrus essential oil and variation of HPMC and chitosan as film former. The three formulas had  a brown color, smooth textures, the gambier odor, visually homogeneous, particle sizes at 112.24 – 116.39 µm, moisture values at 3.9 – 7.04%, pH of 6, drying times of 8 to 15 minutes, adhesive power of > 10 seconds and remained stable for 21 days at 4±2°C and 27±2°C. The actual catechin content in formula I, II, and III were 0.89%, 1.09%, and 1.39%, respectively. The best formula was formula III, which contained 40% HPMC and 10% chitosan due to the fastest drying time of 8.36 minutes ± 19 seconds and the highest catechins content at 1.39%.The purified was isolated from  Uncaria gambir [Hunter] Roxb. that contains more than 90% of catechins. Its antioksidant  and antibacterial properties have  potential to  formulate  as cosmetics. Dry form formulation of cosmetic was one approach to minimize cathecins degradation in a product.  In this study, three formulation of rubber mask containing 5% of purified gambier was done. . Each formulation was formulated with calcium sulfate, propylene glycol, magnesium carbonate, citrus essential oil and variation of HPMC and chitosan as film former. The three formulas had  a brown color, smooth textures, the gambier odor, visually homogeneous, particle sizes at 112.24 – 116.39 µm, moisture values at 3.9 – 7.04%, pH of 6, drying times of 8 to 15 minutes, adhesive power of > 10 seconds and remained stable for 21 days at 4±2°C and 27±2°C. The actual catechin content in formula I, II, and III were 0.89%, 1.09%, and 1.39%, respectively. The best formula was formula III, which contained 40% HPMC and 10% chitosan due to the fastest drying time of 8.36 minutes ± 19 seconds and the highest catechins content at 1.39%.
Planificación estratégica como alternativa para evitar el cierre de las Pymes en tiempo de pandemia. Caso: Municipio de Garzón, Departamento del Huila
Authors: Reyes Carrillo Nelson Eduardo
Published: January 2024

El COVID-19, convertido en un problema de orden mundial, afectó, primero, a toda la humanidad produciendo una crisis sanitaria; y, segundo, impactó la economía global. Esta investigación trata sobre la afectación econó- mica y social de las Pymes colombianas y cómo se puede superar la situación de cierre o quiebra financiera. Se estima que durante la pandemia en Colombia, en 2020, se perdieron 3,9 millones de empleos, disminuyó el PIB y las exportaciones. Se realizó un análisis para proponer la planificación estratégica como método para evitar el cierre definitivo de las empresas, muestra tomada en el Municipio de Garzón, departamento del Huila. Del análisis de los resultados, resalta que los empresarios que usan la planificación estratégica pueden disminuir el nivel de afectación de las empresas en sus procesos internos y sus recursos. Como conclusión se evidencia que el direccionamiento estratégico es un proceso clave para la supervivencia de las Pymes.
El compromiso inmanente en la poesía de Olvido García Valdés (1982-2008) en su revoloteo por el mundo extra-textual: la imagen transmutada en signo lingüístico

Authors: Alava Maria Eugenia
Published: January 2024

En el presente trabajo se estudia la trayectoria poética que de Olvido García Valdés quedó recogida en la antología titulada Esa polilla que delante de mí revolotea. Poesía reunida (1982-2008). García Valdés había sido incluida en la antología de Noni Benegas y Jesús Munárriz, Ellas tienen la palabra: dos décadas de poesía española en 1997 y con ello había quedado inscrita en el marco de una poesía femenina que había hecho historia en una generación reciente, teniendo en cuenta la relevancia que para la construcción del canon poético en femenino tuvo aquel trabajo recopilatorio. En el presente trabajo determinamos cómo las estrategias de descripción del mundo extra-textual se convierten en ejercicios sígnicos de gran peso semántico en la construcción poética del sujeto lírico en la trayectoria poética de García Valdés, consiguiendo con ello una traslación de su pensamiento profundo en torno a su realidad circundante y, en último término, consiguiendo insertarse en ella como agente de cambio, en constante lucha dialéctica desde un planteamiento inmanentista de disposición yo-otros.
Las reformas lingüísticas en China durante el siglo XX. Los procesos de fonetización de la escritura y el paso de la literatura clásica a la vernácula

Authors: Miranda Márquez Gonzalo
Published: January 2024

En este estudio indagamos sobre las reformas lingüísticas realizadas en China durante el siglo XX, una de las etapas más destacadas en la evolución de su escritura y su literatura. Abordamos cronológicamente varias cuestiones estrechamente interrelacionadas, analizamos las propuestas más relevantes de fonetización de la escritura, el paso de la literatura en lengua clásica a la vernácula, las razones y circunstancias que impulsaron estos movimientos y el impacto que tuvieron. Consideramos que estas reformas han influido decisivamente en la lengua escrita y su literatura, y han contribuido a moldear el panorama lingüístico actual de China. Nuestros objetivos son contextualizar y analizar los motivos que desencadenaron dichas reformas, reflexionar sobre si realmente cumplieron con los propósitos para los que fueron concebidas, y en lo concerniente a la discusión sobre la posible fonetización de la escritura china, adoptar una postura en favor o no de la escritura de caracteres chinos. Para llevar a cabo esta investigación hemos trabajado con diferentes fuentes bibliográficas, examinando distintas perspectivas sobre el tema y estudiando las implicaciones de las reformas en la escritura y la sociedad. Este análisis se ha realizado considerando las particularidades inherentes a la escritura china y situando las reformas en su contexto adecuado
Ignacio de Ordejón, un traductor en la España de fines de la Ilustración

Authors: De Lara Ródenas Manuel José
Published: January 2024

Ignacio de Ordejón Niño, nacido en 1770 en Población de Cerrato (Palencia), es una figura apenas estudiada de la Ilustración tardía en España. Aunque su nombre aparece esporádicamente en algunas obras históricas o filológicas, que dan cuenta de la variada actividad intelectual que desarrolló a lo largo de los años, ni su vida ni su obra han suscitado aún la atención investigadora que sin duda merece. Abogado por formación, historiador por vocación y amigo de algunos de los personajes más significativos de la España de los siglos XVIII y XIX, se dio a conocer desde 1796 como traductor de francés, labor que le permitió publicar en castellano en los veintitrés años siguientes un interesante conjunto de obras, en el que alternó lo literario con lo científico y lo religioso. Este artículo analiza su perfil de traductor y las obras que incorporó al panorama editorial español de su época.
Studi Literatur: Computational Thinking Dalam Penyelesaian Soal Cerita
Authors: Hidayat Rachmat , Juniati Dwi , Khabibah Siti
Published: January 2024

Artikel ini bertujuan untuk mendeskripsikan penyelesaian soal cerita matematika dengan menggunakan Computational Thinking (CT). Penelitian ini berfokus pada kegiatan penyelesaian soal cerita matematika yang merupakan salah satu aspek penting yang muncul dalam soal-soal PISA, khususnya soal yang menguji literasi matematika. Analisis dan deskripsi teoretis tentang bagaimana proses CT dalam penyelesaian soal cerita matematika disajikan dengan gagasan utama yakni, computational thinking dapat dipandang sebagai pendekatan dalam penyelesaian masalah matematika. Dan karena untuk menyelesaikan soal cerita matematika membutuhkan kemampuan penyelesaian masalah matematika, maka CT dapat digunakan sebagai pendekatan penyelesaian soal cerita matematika. Penelitian ini menggunakan metode studi literatur, di mana data diperoleh melalui telaah, pembacaan, dan sintesis informasi dari beragam sumber. Sebanyak 19 artikel yang digunakan sebagai referensi berasal dari jurnal terakreditasi dengan minimal peringkat SINTA 4. Kesimpulan dari artikel ini adalah bahwa CT sebagai sebuah pendekatan dalam penyelesaian masalah matematika memiliki langkah-langkah yang sesuai dengan penyelesaian soal cerita matematika yang banyak dikemukakan oleh beberapa ahli sebelumnya. Langkah decomposition dan pattern recognition sesuai dengan langkah memahami, Abstraction sesuai dengan Perencanaan, algorithm design sesuai dengan menyelesaikan persamaan matematika, optimization and iteration sesuai dengan mengecek ulang solusi
Proses Berpikir Analitik Dalam Memecahkan Masalah Matematika Berdasarkan Komponen Metakognisi
Authors: Ayunengdyah Nandita , Juniati Dwi , Khabibah Siti
Published: January 2024

Abstract

This research aims to describe 1) the analytical thinking process of students with a high metacognition component in solving mathematical problems and 2) the analytical thinking process of students with a low metacognition component in solving mathematical problems. This research is qualitative. Data was collected using tests, questionnaires, and interview methods. The subjects of this research were two 8th-grade junior high school students selected based on high metacognition and low metacognition components. The research instruments are a pre-questionnaire test, a metacognition component questionnaire, a problem-solving test, and an interview guide. The results of the research show that students' analytical thinking processes have a high metacognitive component in solving mathematical problems, which can be seen from how students use information, link their knowledge to make mathematical models and carry out mathematical calculations, plan strategies and apply problem-solving strategies and carry out evaluations. Meanwhile, the analytical thinking process of students with low metacognition components in solving mathematical problems can be seen from how students use their knowledge to create mathematical models, plan problem-solving strategies, apply them, and conduct evaluations. However, there are errors in the process of planning strategies, implementing strategies, and carrying out evaluations.

Keywords: Analytical Thinking Process; Problem-Solving; Metacognition Component.

 

Abstrak

penelitian ini bertujuan untuk mendeskripsikan 1) Proses berpikir analitik siswa berkomponen metakognisi tinggi dalam memecahkan masalah matematika, 2) Proses berpikir analitik siswa berkomponen metakognisi rendah dalam memecahkan masalah matematika. Penelitian ini merupakan penelitian kualitatif. Pengumpulan data dilakukan menggunakan metode tes, metode angket, dan metode wawancara. Subjek dari penelitian ini adalah dua siswa kelas 8 SMP yang dipilih berdasarkan komponen metakognisi tinggi dan komponen metakognisi rendah. Instrumen penelitian pada penelitian ini yaitu tes pra angket, angket komponen metakognisi, tes pemecahan masalah, dan pedoman wawancara. Proses berpikir analitik siswa dengan komponen metakognisi tinggi dalam memecahkan masalah matematika terlihat dari bagaimana siswa menggunakan informasi, mengaitkan pengetahuan yang dimiliki untuk dijadikan model matematika dan melakukan perhitungan matematis, merencanakan strategi serta menerapkan strategi pemecahan masalah dan melakukan evaluasi. Sedangkan proses berpikir analitik siswa dengan komponen metakognisi rendah terlihat dari bagaimana siswa dalam menggunakan pengetahuannya untuk membuat model matematis, merencanakan strategi pemecahan masalah dan menerapkannya serta melakukan evaluasi, namun terdapat kesalahan dalam proses merencanakan strategin, menerapkan strategi, dan melakukan evaluasi.

Kata Kunci: Proses Berpikir Analitik; Pemecahan Masalah; Komponen Metakognisi.
EDIBLE FISH IDENTIFICATION BASED ON MACHINE LEARNING
Authors: Mohammed Hassoon Israa , Akram Hantoosh Shaymaa
Published: January 2024

Automated fish identification system has a beneficial role in various fields. Fish species can usually be identified based on visual observation and human experiences. False appreciation can cause food poisoning. The proposed system aims to efficiently and effectively identify edible fish from poisonous ones based on three machine learning (ML) techniques. A total of 300 fish images are used, collected from 20 species with differences in shapes, sizes, and colors. Hybrid features were extracted and then fed to three types of ML techniques: k-nearest neighbor (K-NN), support vector machine (SVM), and neural networks (NN). The 300 fish images are divided into two: 70% for training and 30% for testing. The accuracy rates for the presented system were 91.1%, 92.2%, and 94.4% for KNN, SVM, and NNs, respectively. The proposed system is evaluated using four terms: precision, sensitivity, F1-score, and accuracy. Results show that the proposed approach achieved higher accuracy compared with other recent pertinent studies.
COMPARATIVE STUDY OF CHAOTIC SYSTEM FOR ENCRYPTION
Authors: S. Salman Doaa , Rokan Naif Jolan
Published: January 2024

Chaotic systems leverage their inherent complexity and unpredictability to generate cryptographic keys, enhancing the security of encryption algorithms. This paper presents a comparative study of 13 chaotic keymaps. Several evaluation metrics, including keyspace size, dimensions, entropy, statistical properties, sensitivity to initial conditions, security level, practical implementation, and adaptability to cloud computing, are utilized to compare the keymaps. Keymaps such as Logistic, Lorenz, and Henon demonstrate robustness and high-security levels, offering large key space sizes and resistance to attacks. Their efficient implementation in a cloud computing environment further validates their suitability for real-world encryption scenarios. The context of the study focuses on the role of the key in encryption and provides a brief specification of each map to assess the effectiveness, security, and suitability of the popular chaotic keymaps for encryption applications. The study also discusses the security assessment of resistance to the popular cryptographic attacks: brute force, known plaintext, chosen plaintext, and side channel. The findings of this comparison reveal the Lorenz Map is the best for the cloud environment based on a specific scenario.
Role of Workplace Spirituality, Organizational Citizenship Behavior, Organizational Justice and Performance of Nurses
Authors: Poonam  , Rohit Chauhan  , Preeti
Published: January 2024

The present study aims to explore the relationship between spirituality, organizational citizenship behavior, organizational justice and performance of nurses. For the purpose of the study, a sample of 300 female nurses of age group between 30-40 years having five years’ experience in their profession. Government hospital nurses have been selected in the sample. Spirituality attitude scale, organizational citizenship behavior, organizational justice and performance of nurses were administered on the subjects. Data was analyzed using correlation method. The results reveals that there is a positive relationship between spirituality, organizational justice, organizational citizenship behavior and performance of nurses.
Relationship between Appearance-Based Rejection Sensitivity, Fear of Intimacy and Body Image in Young Adults
Authors: Kritika Choudhary  , Kakul Hai
Published: January 2024

The current study aimed at studying the relationship between anxious concerns of one’s appearance with one’s opinion on their body image and the fear of intimacy. Appearance refers to the way someone looks. Body image is the perception of one’s body. To investigate the relationship between appearance-based rejection sensitivity, fear of intimacy and the sub-scales of body image perception. To check how strongly these variables can affect each other in the age group of 18-25 years old men and women. It was found that there is a weak relation between all the variables, i.e., appearance, body image and fear of intimacy.
Bridging Trust and Paranoia: A Closer Look at Subclinical Phenomena
Authors: Ms. Naina Kumari Singh  , Dr. Nirmala Singh Rathore
Published: January 2024

Trust is the basic foundation for every human interaction. However, its dynamic relationship with paranoia has been studied, but the findings are conflicting, with some studies finding no connection between trust and paranoia. This study aims to extend the line of research in this area by analysing the relationship between trust in others and paranoia. The study used validated measures like the R-GPTS and trust scale to examine the incidences of distrust and paranoia and the correlation between them in a sample of 100 participants from the sub-clinical population collected randomly. The study came up with pieces of evidence showing the prevalence of distrust in others and elevated levels of paranoid ideation in the sample population. Also, there was no statistical evidence to support significant gender differences in both trust and paranoia. The empirical data concludes that trust shows an inverse relationship with paranoia.
Development of Numerical Literacy-Based Student Worksheet on Improving Mathematical Reasoning
Authors: Purwanti Lisa , Darmanto Eko , Sumaji  , Premprayoon Kasem
Published: January 2024

The study background is that students' mathematical reasoning abilities must be improved through learning. Efforts to improve mathematical reasoning are carried out with the Numerical Literacy-Based Student Worksheet Development process. The worksheet (LKS) development process must meet the eligibility to support learning. The study method uses Research and Development that includes ten steps—data collection techniques with interviews, questionnaires, and tests. The research subjects were fourth-grade elementary school students. The study results found that development begins with preliminary studies, analysis, formulation of learning media development, media design, prototypes, and instrument development. The validation of media experts scored 91.4% and material experts 80% with a valid predicate. The teacher's response questionnaire results were 84.2% in the very decent category, and the students’ response questionnaire got 83.6% in the very like category. The results of the validity test of mathematical reasoning are valid because the value of r-count > r table (0.632). The reliability test obtains an alpha value of 0.979, which indicates the instrument is reliable. This study concludes that the Development LKS based on numerical literacy meets the needs analysis of students and teachers and obtains valid criteria from media and material experts. The development of numerical literacy-based student worksheets (LKS) also received good grades for improving students' mathematical reasoning.
Implementation Probing Prompting Learning Model on Students' Mathematical Concepts Understanding Ability and Self Confidence
Authors: Dewi Risalah  , Novia Yulianti  , Iwit Prihatin
Published: January 2024

The model of Probing prompts is learning with the way the teacher presents nature questions, lead, and dig so that student requires the ability to understand and develop draft mathematics in finished question. The purpose of this study is to find out how the application of the probing prompting learning model to the ability to understand mathematical concepts in terms of students' self-confidence in the material Algebraic Forms class VII SMP Negeri 1 Sungai Raya. The method used in this study is an experimental method, with the experimental form used being the Quasy Experimental Design experiment, and the research design is a 2 x 3 factorial design. The population of this study was all grade VII students at SMP Negeri 1 Sungai Raya consisting of 5 classes, with samples of class VIIG and VIIH taken using the Cluster Random Sampling technique. Based on the analysis of the variance of two paths with unequal cells, it was concluded that there is a significant difference in the ability to understand mathematical concepts between probing prompting and conventional learning models regarding self-confidence in the material of algebraic forms.
Students' Ability to Solve Arithmetic Problems Based on APOS Theory in Cognitive Styles Differences
Authors: Eka Siti Maullina  , Setyaningsih Nining
Published: January 2024

This study describes the ability to solve systematic problems regarding field-dependent (FD) and field-independent (FI) cognitive styles in arithmetic material. Solving systematic problems based on the APOS theory (action, process, object, schema) describes the ability of each student's cognitive style. This type of research is descriptive, using a qualitative approach. The research subjects consisted of four students consisting of two students with an FD and two FI styles in class X SMA Negeri 1 Gemolong. Data collection methods are tests and interviews. The instruments in the research were the researchers themselves, the GEFT (Group Embedded Figure Test) test as an instrument in selecting research subjects, a test of the ability to solve arithmetic problems based on APOS and interview guidelines. The analysis technique used in this study is data reduction, data presentation, and conclusion. The results showed that students with a FI cognitive style were better at problem-solving than students with an FD cognitive style. Subject FI can solve mathematical problems systematically based on APOS theory, and FI can determine methods for solving mathematical problems and originate from their thoughts not influenced by other parties. Meanwhile, FD has difficulty solving problems systematically and understanding and making mathematical models, which tends to be problematic in understanding mathematical problems and solutions that do not originate from their thinking.
Development of Flip PDF And Video Based E-Modules to Improve Mathematics Learning Outcomes
Authors: Mampouw Helti Lygia , Yogani Indah Pawestri  , Tri Nova Hasti Yunianta
Published: January 2024

The decline in national exam results for junior high school students in 2017-2019 decreased yearly, with achievement in 2019 of 46.46%, with the lowest mathematics score compared to other subjects. This research aims to produce a valid, practical, and efficient. E-module is used to create an E-module system of linear equations in two variables that meet applicable criteria. This study uses Research and Development (R&D) research using the ADDIE method, namely analysis, design, development, implementation, and evaluation; researchers develop E-modules, a system of linear equations in two variables accessed via the internet. E-modules that are created apply concepts in daily life or contextually so students can easily understand The tool used in the module is Flip pdf edition corporate. The participants of this study were 34 class VIII students of SMP N 1 Suruh for the 2021/2022 academic year. The development of the E-module system of linear equations in two variables gets a good response from students by getting an average of 88% in the excellent category,  practicality average is 87,5% in the excellent category, so this E-module is feasible to use in the learning process, the resulting impact students can understand the material with interest and curiosity to learn. The use of E-modules must pay attention to the weaknesses of students who need the facilities and infrastructure to access the media E-module.
Profile of Pre-Service Mathematics Teacher’s Algebraic Thinking Based on Systematic-Intuitive Cognitive Style
Authors: Kusuma Ninda Ayu Nur , Masduki Masduki
Published: January 2024

Algebraic thinking plays an essential role in increasing mathematics problem-solving abilities. In this study, the pre-service mathematics teacher’s (PMTs) ability of algebraic thinking is explored based on a systematic-intuitive cognitive style. This study aims to reveal students' algebraic thinking abilities regarding systematic-intuitive cognitive style. Three components of algebraic thinking were analyzed: arithmetic generalization, functional thinking, and generalization and justification. The research approach is qualitative with a case study method. The subjects were 31 PMTs at one of the private universities in Surakarta District, Central Java, Indonesia. Data collection methods were algebraic thinking tests,  the Cognitive Style Inventory (CSI) questionnaires, and interview protocol. Four subjects, two PMTs for each cognitive style category were interviewed to reveal their algebraic thinking abilities. The results showed that all subjects were able to solve the functional thinking problem correctly. However, for the generalization arithmetics and justification problems, the PMTs abilities are varied. In addition, the finding also showed the different strategies of systematic and intuitive subjects in solving the problems related to algebraic thinking components. PMTs with a systematic cognitive style solve problems systematically and represent the pattern verbally in the form of a table or word, whereas the PMTs with an intuitive cognitive style solve the problem briefly and visually using pictures pattern. In conclusion, there is a relationship between algebraic thinking ability and cognitive style.
Completion of CVRP with a Combination of Sweep and Local Search Algorithms (Case Study: PT. AJW)
Authors: Alfikri Sirait Zakaria , Lubis Riri Syafitri
Published: January 2024

AJW is a consumer goods distribution company for Indofood products and non-Indofood products. PT. AJW moves throughout Karo district. The number of tourist attractions in Karo makes the demand for goods higher such as Pop noodles, Indomie, chitato and others. Thus, having an impact on the distribution of goods Based on the author's observations at PT. AJW Kabanjahe has no standard provisions in determining the route, the delivery of goods is still carried out based on requests from consumers so that it ignores the distance traveled and time. A way that can solve this distribution problem is the Capacitated Vehicle Routing Problem (CVRP). CVRP is a problem in determining the optimal route by looking at the problem that each vehicle has a capacity limit. To solve CVRP problems, a good heuristic algorithm is used is the sweep algorithm and local search route improvement. This study uses the sweep algorithm to solve the CVRP problem, and the routes obtained by the sweep algorithm will be improved with local search. The sweep algorithm is a simple method of calculation, even for calculating large problems. The sweep algorithm will be combined with local search. Local search is an algorithm used to get shorter routes. The combination of the two algorithms is perfect for solving CVRP problems. After research, a distance of 39.96 km was obtained compared to the company's route of 103.5 km. So the percentage of mileage savings is 61.39%. This shows that sweep algorithms can minimize distance while saving company expenses
Optimization of Liquid Petroleum Gas (LPG) Gas Cylinder Distribution Route with Saving Matrix Method
Authors: Fitri Armanda  , Filia Sari Rina , Garba Muhammad Dare
Published: January 2024

This study aims to optimize the route traveled so that the transportation costs incurred by the company can be much less. This is done because the company as an agent of 3 kg LPG gas cylinders in distributing LPG gas to each base is still not optimal with irregular routes so that the costs incurred by the company are quite large. One solution that can be done in solving this distribution problem is to apply the Saving Matrix method. The Saving Matrix method is one method that can be used to determine the distribution route of a product to the area to be marketed by determining which route to take by looking at the capacity of the vehicle and the number of goods carried in order to get the shortest route and the cost for transportation incurred is small. Based on the results of the study, a distance of 100.73 km was obtained with a total initial distance of 144.29 km, with transportation costs incurred initially of Rp. 98,117.1 to Rp. 68,496.4. So, this shows that the saving matrix method can minimize distance and transportation costs.
Profile of Student Numerical Ability in Higher Order Thinking Skills (HOTS) Problem-Solving
Authors: Muniri Muniri , Samsul Bakri  , Karim Samuel , Santiago Paulo Vitor da Silva
Published: January 2024

The numeracy literacy of Indonesian students at the international level is still relatively low. This can be seen based on the results of the PISA test. In 2015, Indonesia obtained a PISA score of 386 for mathematics from each country's average score, namely 487. Low numeracy literacy can occur due to student errors in solving numeracy questions, namely conceptual and work procedure errors. Numerical Literacy is closely related to solving mathematical problems, primarily found in questions of the Higher Order Thinking Skills (HOTS) type. Therefore, no research examines numeracy skills in solving HOTS problems. This research uses a qualitative approach with a case study type. This study's subjects were class VIII MTs Negeri 5 Tulungagung students. This study used 2 data collection techniques: tests in the form of descriptions and interviews. The analysis model used is Miles and Huberman's model, which consists of data reduction, data display, and conclusion drawing/verification. The results of this study indicate that the level of numeracy ability of students at MTs Negeri 5 Tulungaguang is quite diverse, although, in percentage terms, those with moderate numeracy skills are more dominant. (1) Students with low numeracy abilities cannot fulfil all indicators of Numerical Literacy ability in solving problems, (2) Students with moderate numeracy ability can only fulfil three indicators of Numerical Literacy ability in solving problems, and (3) Students with high numeracy abilities can fulfil all indicators of Numerical Literacy ability in solving problems.
Stability Analysis of Monkeypox Transmission Model by Administering Vaccine
Authors: Lailatuz Arromadhani  , Budi Priyo Prawoto
Published: January 2024

Monkeypox is an infectious disease that affects mammals, including humans and some primates. Monkeypox transmission can be prevented by administering vaccinations to the human population. This study aims to construct and analyze the monkeypox transmission model's stability with vaccination. There are six sub-populations: Vaccinated humans ( ), Susceptible humans ( ), Infected human , Recovered human , Susceptible animal , and Infected human . Several steps are literature study, formulating assumptions, constructing models, finding equilibrium points, searching for reproduction numbers by next-generation matrix, analyzing stability, and numerical simulations using Matlab R02023b. From the model, three equilibria are obtained: disease-free equilibrium points, first endemic equilibrium points, and second endemic equilibrium points. Disease-free equilibrium point will be asymptotically stable at the vaccination rates  and the animal transmission rate of the animal at the rate of . The first endemic equilibrium point ) will be stable for  and . The second endemic equilibrium point  will be stable for  and . Based on numerical simulation results, it is obtained that the higher the vaccination rate and the lower the transmission rate in animals, the faster the transmission of monkeypox infections.
The Effect of Realistics Mathematics Education Models to Enhancement Students’ Mathematics Solving-Problem Ability
Authors: Dianita Dianita Karunia , Ishaq Nuriadin
Published: January 2024

Teachers still use traditional teaching methods, so students' mathematical problem-solving abilities must improve. Because the anticipated model lends itself to improving students' math problem-solving abilities, the authors of this study applied the Realistic Mathematic Education model. This study aims to ascertain how the Realistic Mathematics Education Model affects students' aptitude for solving mathematical problems. Quasi-experimentation is an adopted research approach. Nonequivalent Control Group Design is the format adopted for design. The participants of this study were all fourth-grade students of SDN Cipadu 1 Tangerang City for the 2022–2023 year. The research uses a saturation sampling strategy. Sixty-one students were included in the sample for this investigation. This study uses verified and considered reliable tools in the form of tests. The aim is to determine how students' ability to solve math problems affects data; the SPSS 22.0 program is used for analysis. The results showed that the significance of the t-test was 0.000, indicating that the Realistic Mathematics education paradigm significantly impacted students' mathematical problem-solving ability.
Influence of Interactive Media-based Kahoots Application with Islamic Questions on Students’ Learning Outcomes
Authors: Fauzan Faiq Alwan , Nuriadin Ishaq
Published: January 2024

Learning mathematics has a significant role in forming the students’ attitudes and mindsets and solving problems independently. The problems students face have low mathematics learning outcomes and feel that the material they are learning is complex and the way of learning mathematics is less effective. The teacher is still the center of mathematics's learning process. Therefore, this study aims to determine the effect of Kahoot learning media on the mathematics learning outcomes of fifth-grade students at MI Unwanul Huda. The Kahoot media application is interactive and exciting, so students do not feel bored and bored in learning. This application is a game in the form of a test. The method used is a quantitative experimental method in the form of a quasi-experimental design with one group pre-test and post-test design. The saturated technique sampling consisted of class V, with 28 students. The data collection technique used is the test. The results of the hypothesis test used the t-test with parametric statistics. It is known that the average post-test of student learning outcomes using Kahoot learning media is 65.00, and the average pre-test of student learning outcomes is 37.14. So it can be concluded that there is an influence on the mathematics learning outcomes of students who use Kahoot learning media.
Identification of Students' Mathematical Creative Thinking Ability in Number Pattern Problems Solving
Authors: Hartaji Ivan , Nursit Isbadar , Fathani Abdul Halim , Milshteyn Yula
Published: January 2024

Improving the learning mathematics process in the classroom requires creative thinking skills. In learning mathematics, creative thinking skill is one of the critical mathematical skills to be mastered and developed by students. Creative thinking adds support to students so that students are more enthusiastic about problem-solving. Creative thinking is exploring different, quality, and task-appropriate ideas. The research aims to describe students' mathematical creative thinking skills in number patterns for the eighth grade of MTs Mamba'ul Ulum Pandaan. This research approach was qualitative. The qualitative design was descriptive qualitative. The data collection process was carried out at MTs Mamba'ul Ulum Pandaan. Data collection techniques were carried out in three ways: observation, tests, and interviews. After the data was obtained, qualitative data analysis was then carried out, which consisted of pre-field analysis and field analysis. Field analysis consisted of data reduction, data presentation, and conclusion. Then, the validity of the data was tested. The study results indicated that students with high mathematical creative thinking skills met four indicators. Students with moderate creative thinking skills met two indicators, while those with low creative thinking skills did not meet any predetermined indicators.
Decision Support System in Determining the Job Waiting Period for Graduates of Unimed Using the Mamdani Method of Fuzzy Logic
Authors: Aswita Ginting Rani , Febrian Didi , Mobo Froilan D. , Dehham Sabeeha Hamza
Published: January 2024

During the job search period as an educated unemployed person, it takes time to be accepted into the world of work. The time required to look for a job is a matter of uncertainty. So, we need a system that can be used as a reference in determining the job waiting period for graduates. The graduate job waiting period is when someone has not found a job after graduation. Several factors influence this. In this research, the factors used as job waiting period variables are GPA, length of study and achievement. Every graduate certainly has a different job waiting period. This research aims to determine the job waiting period for Graduates of Unimed by designing a decision support system using the Fuzzy Mamdani method. This research uses quantitative methods. Data was obtained by distributing questionnaires to Graduates of Unimed. It is hoped that the decision support system for determining the job waiting period can encourage students, especially Universitas Negeri Medan students, to improve their quality before entering the job. With the help of Matlab software, a decision support system using the Mamdani method can be used to determine the waiting period, where the result is that the job waiting period for Graduates of Unimed is fast in the 0-3 month category.
Problem-based Learning Model Assisted by Interactive Animation Videos on Numeracy Ability in Spatial Building Materials
Authors: Febiani Sintia , Susanti Novi , Rahayu Chika , Garba Muhammad Dare , Dhakal Amrit
Published: January 2024

Students in the era of school digitalization need numeracy skills. Numeracy ability is related to solving a problem. The Problem-based Learning (PBL) model is suitable for solving a problem with the help of interactive animated videos. This study aims to determine whether the PBL model assisted by interactive animated videos influences students' numeracy abilities. The research method used is quantitative in the form of an actual experiment. The sample in this study was students in class VIIB and VIIC, who were chosen randomly. The data collection techniques used are documentation and tests. The data analysis techniques used are normality test, homogeneity test and independent sample test. The research results show that the calculated t value > t table where t calculated = 8.132 and t table = 1.697. This means there is a significant difference in the average student numeracy ability between the experimental and control groups. The PBL model was assisted by interactive animated videos in solving questions on spatial building materials. Students were less able to analyze the information presented, less able to interpret the data collection, and not yet able to make conclusions.