bluuebunny/crossref_metadata_2025_split huggingface dataset:
RUMAH BETANG: EKSPLORASI ETNOMATEMATIKA PADA RUMAH ADAT KALIMANTAN TENGAH
Authors: Ansori Hidayah , Iskandar  
Published: November 2024

Pembelajaran matematika kontekstual dapat memanfaatkan budaya sebagai sumber pembelajaran yang relevan dan menarik. Istilah yang memadukan budaya dan matematika dikenal dengan istilah etnomatematika. Melalui eksplorasi etnomatematika pada Rumah Betang, siswa dapat lebih mudah memahami pelajaran matematika, mengenali hubungan antara matematika dan budaya, dan mengaplikasikan pengetahuan matematika dalam konteks yang bermakna dalam kehidupan sehari-hari. Penelitian ini mengkaji hubungan antara matematika dan budaya melalui eksplorasi Rumah Betang sebagai objek studi. Penelitian ini bertujuan untuk mengkaji konsep etnomatematika yang terkait dengan desain dan struktur Rumah Betang seperti pengukuran dan perhitungan, geometri, proporsi, struktur, pola dan ruang serta mengidentifikasi penggunaan matematika dalam aspek budaya suku Dayak. Metode penelitian yang digunakan adalah penelitian lapangan dengan pendekatan kualitatif. Data dikumpulkan melalui observasi langsung, dan studi pustaka yang berkaitan dengan Rumah Betang. Data yang terkumpul dianalisis menggunakan pendekatan induktif untuk mengidentifikasi konsep matematika yang terlibat dalam desain dan konstruksi Rumah Betang. Hasil penelitian menunjukkan bahwa Rumah Betang memiliki keterkaitan yang kuat dengan konsep matematika, seperti pengukuran dan perhitungan, geometri, proporsi, struktur, pola dan ruang.

Contextual mathematics learning can utilize culture as a relevant and engaging source of education. The term that combines culture and mathematics is known as ethnomathematics. Through the exploration of ethnomathematics in the context of Rumah Betang, students can gain a deeper understanding of mathematics, recognize the relationship between mathematics and culture, and apply mathematical knowledge in meaningful everyday contexts. This research examines the relationship between mathematics and culture through the exploration of Rumah Betang as the subject of study. The purpose of this research is to investigate ethnomathematical concepts related to the design and structure of Rumah Betang, such as measurement and calculation, geometry, proportions, structure, patterns, and space, as well as to identify the use of mathematics in the cultural aspects of the Dayak tribe. The research method employed is field research with a qualitative approach. Data is collected through direct observation and relevant literature studies related to Rumah Betang. The gathered data is analyzed using an inductive approach to identify mathematical concepts involved in the design and construction of Rumah Betang. The research findings indicate that Rumah Betang has a strong connection with mathematical concepts, including measurement and calculation, geometry, proportions, structure, patterns, and space.
PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS ANDROID PADA MATERI DERET ARITMETIKA UNTUK PESERTA DIDIK KELAS X SMA/MA
Authors: Rafi'i Muhammad , Zulkarnain Iskandar , Kusumawati Elli 
Published: November 2024

Pendidikan di Indonesia saat ini lebih diarahkan pada pola pendidikan yang modern. Hal ini dapat dilihat dari berbagai inovasi yang diterapkan untuk meningkatkan kualitas pembelajaran. Salah satu inovasinya adalah dengan dikembangkannya media pembelajaran berbasis android. Penelitian ini bertujuan untuk mengembangkan media pembelajaran berbasis android pada materi deret aritmetika untuk peserta didik kelas X SMA/MA yang valid, praktis dan efektif. Metode yang digunakan adalah metode Research and Development dengan menggunakan model pengembangan ADDIE (Analysis, Design, Development, Implementation, Evaluation). Penelitian ini menunjukkan bahwa media pembelajaran valid, dengan validasi dilakukan oleh dua orang validator dan diperoleh penyajian pada validitas materi sebesar 4,32 dan validitas media sebesar 4,22, yang keduanya termasuk dalam kriteria valid. Hasil kepraktisan dari angket respon guru sebesar 100% dan peserta didik sebesar 91,17% dengan keduanya termasuk pada kriteria sangat praktis. Hasil keefektifan termasuk dalam kriteria sangat efektif dengan perolehan persentase ketuntasan klasikal sebesar 91,58%. Dengan demikian, media pembelajaran berbasis android pada materi deret aritmetika untuk peserta didik kelas X SMA/MA dapat digunakan dalam proses pembelajaran dan memenuhi kategori valid, praktis dan efektif.
Education in Indonesia is currently more oriented towards a modern educational pattern. This can be seen from the various innovations implemented to improve the quality of learning. One of the innovations is the development of android-based learning media. This study aims to develop android-based learning media on arithmetic series material for class X high school students that are valid, practical, and effective. The method used is the Research and Development (R&D) method using the ADDIE development model (Analysis, Design, Development, Implementation, and Evaluation). This research shows that the learning media is valid, with validation conducted by two validators and obtained a presentation on material validity of 4.32 and media validity of 4.22, both of which fall into the valid criteria. The practicality results of the teacher response questionnaire were 100% and the students were 91.17% with both included in the very practical criteria. The effectiveness results are included in the very effective criteria with the acquisition of a classical completeness percentage of 91.58%. Thus, android-based learning media on arithmetic series material for class X high school students can be used in the learning process and meet the valid, practical and effective categories.
TEKNIK MANIPULASI ALJABAR PADA TRANSFORMASI OPS
Authors: Ahmad Lazwardi  , Moch. Idris  
Published: November 2024

Transformasi Ops merupakan teknik manipulasi aljabar yang mengawankan setiap barisan bilangan real kepada fungsi pembangkitnya. Transformasi Ops mengubah bentuk deret kuasa dari suatu transformasi Ops kepada bentuk aljabar yang lebih sederhana dengan mengabaikan beberapa variabel yang sifatnya tetap. Perubahan bentuk aljabar melahirkan beberapa sifat dan aturan aljabar. Penelitian ini mencoba mengembangkan teori terkait sifat-sifat tersebut dan bagaimana korelasinya antara satu dengan lainnya. Metode penelitian yang digunakan adalah studi literatur. Hasil penelitian ini adalah pengembangan teorema manipulasi variabel pada transformasi Ops dan manipulasi variabel pada transformasi Ops tipe-c.
Ops transformation is an algebraic manipulation technique that associates each sequence of real numbers with its generating function. Ops transformation changes the power series form of an Ops transformation to a simpler algebraic form by ignoring some variables that are fixed. The change in algebraic form gives rise to several algebraic properties and rules. This study attempts to develop a theory related to these properties and how they correlate with each other. The research method used is literature study. The results of this study are the development of variable manipulation theorems in Ops transformation and variable manipulation in c-type Ops transformation.
KONSTRUKSI POHON FILOGENETIK VIRUS DENGUE DI INDONESIA MENGGUNAKAN METODE MAXIMUM PARSIMONY
Authors: Syafi’i Ahmad Maulana 
Published: November 2024

Pada paper ini dijelaskan pembentukan pohon filogenetik virus dengue tipe-3 di Indonesia. Pembentukan pohon filogenetik menggunakan Maximum Parsimony dengan mencari pohon yang jumlahnya paling minimum dari perubahan antar virus. Tujuan dari paper ini adalah mengetahui bagaimana evolusi virus dengue tipe-3 di Indonesia dari tahun ke tahun. Pada paper ini diberikan jarak antar genetik menggunakan metode Kimura 2 Parameter dan pohon filogenetik menggunakan maksimum parsimony. Hasil yang didapatkan ialah terlihat bahwa pohon filogenetik yang terbentuk menggunakan maksimum parsimony memperkuat analisis jarak genetik.
This paper describes the establishment of a type-3 dengue virus phylogenetic tree in Indonesia. Formation of a phylogenetic tree using Maximum Parsimony by finding a tree with the minimum number of changes between viruses. The aim of this paper is to find out how the type-3 dengue virus evolves in Indonesia from year to year. In this paper, the distance between genetics is given using the Kimura 2 Parameter method and a phylogenetic tree using maximum parsimony. The results obtained show that the phylogenetic tree formed using maximum parsimony strengthens the genetic distance analysis.
INOVASI MODEL-MODEL PEMBELAJARAN KOOPERATIF BERBASIS BUDAYA GOTONG ROYONG HANDEP UNTUK PEMBELAJARAN MATEMATIKA
Authors: Demitra  
Published: November 2024

Model-model pembelajaran kooperatif merupakan model pembelajaran yang dikembangkan di luar negeri dan diadopsi untuk diterapkan dalam pembelajaran matematika di Indonesia. Padahal masyarakat Indonesia memiliki budaya gotong royong, yang potensial diangkat sebagai mekanisme kerjasama dalam sintaks model pembelajaran kooperatif. Salah satunya budaya gotong royong handep yang ada di dalam kehidupan masyarakat suku Dayak di Kalimantan Tengah. Pengembangan model pembelajaran kooperatif handep telah dilakukan sejak tahun 2010 menggunakan penelitian dan pengembangan. Tujuannya menyampaikan hasil penelitian dan pengem­bangan model pembelajaran kooperatif handep berkelompok dan model pembelajaran kooperatif handep berpasangan. Hasil validasi ahli menunjukkan bahwa draft model pembelajaran kooperatif handep telah layak sebagai sebuah model pembelajaran. Hasil validasii kelompok kecil, dimana respon pebelajar menyatakan bahwa model pembelajaran ini, menarik dan menyenangkan, mampu memfasilitasi belajar konsep dan pemecahan masalah matematika. Hasil validasi lapangan menunjukkan bahwa ada pengaruh signifikan model pembelajaran kooperatif handep berkelompok maupun berpasangan terhadap kemampuan pemecahan masalah matematika, dan memotivasi belajar siswa.
Cooperative learning models developed abroad and adopted for application in mathematics learning in Indonesia. Indonesian society has a culture of cooperation, which has the potential to be raised as a mechanism of cooperation in the syntax of cooperative learning models. The culture of handep collaboration exists in the life of the Dayak tribe in Central Kalimantan. The development of the cooperative handep learning model has been carried out since 2010 using research and development. The aims are to design and develop a group cooperative learning model and, a pair cooperative handep learning models. The expert validation results indicate that the draft cooperative handep learning model is feasible as a learning model. The results of the small group validation, where the learner's response states that this learning model is interesting and fun, can facilitate learning concepts and mathematical problem-solving. The field test results show a significant influence of the cooperative learning model of handep in groups or pairs on mathematical problem-solving abilities and motivating students to learn.
Temporal Evolution of Dynamics of a Swimming Robot Using Sparse Identification
Authors: Sayahkarajy Mostafa , Witte Hartmut 
Published: November 2024

Anguilliform swimming is one of the most complex locomotion modes, involving various interacting phenomena, which requires multidisciplinary studies. Eel robots are intended to employ biology principles and exhibit efficient locomotion replicating the natural anguilliform swimming. Such robots are easier to engineer and study than their natural counterparts. Nevertheless, characterizing the robot–environment interaction is complex, demanding computationally expensive fluid dynamics modeling. In this study, we employ machine learning (ML) strategies to discover the temporal evolution of the system, as the data-driven model. Three models were investigated using dynamic mode decomposition (DMD), sparse system identification (SINDy using PySINDy package), and autoencoder neural network (AE NN) as a general function approximator. The models were simulated using MATLAB R2022® to obtain the prediction errors. The results show that the SINDy model presents less error within the regression range, and in particular, performs better within extrapolation. Additionally, the SINDy model has a compact form and can explicitly formulate the coupling phenomena amongst the modes. The identified model, then, was employed to recover the system state data matrix. It is concluded that the proposed model with quadratic terms provides a parsimonious representation of the system dynamics.
Study On The Biomechanical Properties Of Rabbit Venous Arterialization
Authors: Liu Tongtong , Zhang Yuhao , Niu Pei , Zhang Zhimin , Niu Xiaolong , Shen Wenzeng , Hao Liangchao , Zhou Yujuan , Liu Fulin 
Published: November 2024

Abstract

Objective. To investigate the mechanisms underlying restenosis following coronary artery bypass grafting using bridging veins.
Design. We established an external jugular vein bypass grafting model using rabbit carotid arteries and conducted vascular biomechanical experiments (pressurisation and stretching).
Place & duration of study. Our research was conducted at the Medical Animal Experiment Center of Hebei University (From 1/6/2018 to 31/12/2023).
Methodology. We established a rabbit model of venous arterialisation, by transplanting veins into the arterial system as bridging vessels and investigated vessel tensile mechanical and histomorphological properties.
Results. Control vein elasticity (k = 16.20) was less than that of the control artery (k = 58.04; P < 0.05), and vein walls were thinner. Following venous arterialisation, proliferating cell nuclear antigen and alpha-actin were upregulated and vein walls thickened (P < 0.05), with elasticity after venous arterialisation (k = 86.26) significantly higher than that of control veins (P < 0.05).
Conclusion.This indicates that venous intima is damaged by high pressure following arterialisation, resulting in gradual restenosis, with thickening of the venous intima and an increase in vessel elasticity. Clinically, there is potential to repeat these experiments to determine the elastic extremum of the great saphenous vein and control the pressure in the lumen of this vessel, to ensure minimal damage to the intima before anastomosis, thereby facilitating improvement of long-term patency rates following vein bridge surgery. Whether the increase in venous bridge elasticity after venous arterialisation can be controlled, with the aim of preventing early-stage restenosis, warrants investigation.
WITHDRAWN: Thangka Image Caption Generation Method Combining Multi-scale and Multi-level Aggregation
Authors: YUE Chaoyang , Hu Wenjin , Zhang Fujun , Shi Xinyue 
Published: November 2024

Abstract

The full text of this preprint has been withdrawn by the authors in order to comply with an institutional policy on preprints. Therefore, the authors do not wish this work to be cited as a reference.
Improving the Working Efficiency of a Heavy-Duty Metal Cutting Machine Through Closed-Loop Feedback
Authors: Altwiab Mohammed Khamis Mohammed 
Published: November 2024

Abstract

The aim of this project is to improve the functionality and reliability of the HACO Hydraulic Guillotine Shear (Model PS 2532), widely employed in manufacturing and maintenance workshops. The primary issue addressed was the frequent machine malfunctions caused by erroneous data entry, which resulted in damage to the hydraulic components. To resolve this issue, an ultrasonic thickness gauge sensor was integrated into the machine's control system, with the objective of automating and optimizing the cutting process. A comparative analysis was performed on mechanical, capacitive, inductive, laser, and ultrasonic sensors, with the ultrasonic sensor chosen due to its cost-effectiveness, ease of integration, and high accuracy. Laboratory testing was conducted using a sample control panel to evaluate the sensor's calibration, sensitivity, repeatability, linearity, and reproducibility. The sensor achieved an accuracy of ± 0.05 mm with an uncertainty of 0.02 mm. A programmable logic controller (PLC) was utilized to design the control logic, ensuring precise sensor readings and machine operation. The integration of the ultrasonic sensor resulted in a 15% improvement in operational efficiency and a notable reduction in manual errors. This project presents a thorough approach to enhancing the performance of metal cutting machines through sensor integration, offering a clear framework for improving accuracy and productivity in industrial cutting processes.
Application of fluorescence i-motif DNA silver nanocluster sensor to visualize endogenous reactive oxygen species in plant cells
Authors: Oh Young Kyoung , Yadavalli Hari Chandana , Ryu Moon Young , Shah Pratik , Oh Tae Rin , Choi Suk Won , Cho Seok Keun , Kim Yun Ju , Kim Jong Hum , Yang Seong Wook 
Published: November 2024

Abstract

Reactive oxygen species (ROS) are crucial in plant growth, defense, and stress responses, making them vital for improving crop resilience. Various ROS sensing methods for plants have been developed to detect ROS in vitro and in vivo. However, each method comes its own advantages and disadvantages, leading to an increasing demand for a simple and effective sensory system for ROS detection in plants. Here, we introduce novel DNA silver nanoclusters (DNA/AgNCs) sensors for visualizing ROS in plants. Two sensors, C20/AgNCs and FAM-C20/AgNCs-Cy5, detect intracellular ROS signaling in response to stimuli such as abscisic acid, salicylic acid, ethylene, and bacterial peptide elicitor flg22. Notably, FAM-C20/AgNCs-Cy5 exceeds the sensing capabilities of HyPer7, a widely recognized ROS sensor. Taken together, we suggest that fluorescent i-motif DNA/AgNCs system is an effective tool for visualizing ROS signals in plant cells. This advancement is important to advancing our understanding of ROS-mediated processes in plant biology.
Effect of antipsychotic on mismatch negativity amplitude and evoked theta power in drug- naïve patients with schizophrenia
Authors: Xiong Yan-Bing , Bo Qi-Jing , Li Xian-Bin , Liu Yi , Guo Qi-BO , Wang Chuan-Yue 
Published: November 2024

Abstract

Background
Recurrent observations have indicated the presence of deficits in mismatch negativity (MMN) among schizophrenia. There is evidence suggesting a correlation between increased dopaminergic activity and reduced MMN amplitude, but there is no consensus on whether antipsychotic medications can improve MMN deficit in schizophrenia.
Methods
We conducted clinical assessments, cognitive function tests, and EEG data collection and analysis on 31 drug-naïve patients with schizophrenia. Comprehensive evaluation tools such as PANSS and MCCB. MMN amplitude was analyzed by event-related potential (ERP) approaches, evoked theta power was analyzed by event-related spectral perturbation (ERSP) approaches.
Results
Our findings indicate that antipsychotic treatment significantly improved clinical symptoms, as evidenced by reductions in PANSS positive, negative, general symptoms, and total scores (all p < 0.001). Cognitive function improvements were observed in language learning, working memory, and overall MCCB scores (p < 0.05), although other cognitive domains showed no significant changes. However, no significant improvements were noted in MMN amplitude and evoke theta power after four weeks of antipsychotic treatment (p > 0.05).
Conclusion
These results suggest that while antipsychotic medications effectively alleviate clinical symptoms, their impact on MMN amplitude and evoke theta power deficit is limited in the short term. Moreover, the amelioration of cognitive impairment in individuals with schizophrenia is not readily discernible, and it cannot be discounted that the enhancement observed in language acquisition and working memory may be attributed to a learning effect. These findings underscore the complexity of the neurobiological mechanisms involved and highlight the need for further research to optimize individualized treatment strategies for schizophrenia.
Clinical features and risk factors of invasive pulmonary aspergillosis in interstitial lung disease patients
Authors: Liu Yin , Su Xin , Cao Min , Jiang Hanyi , Zhao Tingting , He Jian , Qi Rongfeng , Xiao Yonglong 
Published: November 2024

Abstract

Background
The prevalence of invasive pulmonary aspergillosis (IPA) among patients with interstitial lung disease (ILD) is steadily increasing, leading to high mortality. The purpose of this study is to analyze the clinical features and risk factors of IPA in patients with ILD.
Methods
353 hospitalized ILD patients admitted in Nanjing Drum Tower Hospital from March 2023 and April 2024 were enrolled. The enrolled patients were divided into the IPA group (proven and probable IPA) and non-IPA group, and the clinical characteristics and prognosis were compared between the two groups.
Results
Among 353 patients with ILD, 58 who suffered from IPA were identified. Among them, 2 (3.4%) episodes of proven IPA and 56 (96.6%) of probable IPA were diagnosed. The median age was 68.4 ± 8.6 years, and 35 patients were men. The forms of ILD included idiopathic pulmonary fibrosis (n = 21), interstitial pneumonia with autoimmune features (n = 13), rheumatoid arthritis related interstitial pneumonia (n = 11) and Sjögren′s syndrome (n = 4). The clinical features of IPA in ILD were cough (100.0%), dyspnea (93.1%) and fever (55.2%). Chest CT images showed traction bronchiectasis (84.5%), GGO (77.6%), honeycombing (69.0%), consolidation (44.8%) and pleural effusion (24.1%). The incidence of honeycombing and consolidation were higher in ILD patients with IPA compared to control group (P < 0.05). The main pathogens were A. fumigatus (50.0%) and A. flavus (29.3%). Following the diagnosis of IPA, all patients were treated with antifungal drugs. The overall survival rate after 90 days was 74.1%. Multivariate conditional Logistic regression analysis showed that lymphopenia (OR = 2.745, 95% CI 1.344–5.607) and honeycombing (OR = 2.915, 95% CI 1.429–5.949) were the risk factors of ILD with IPA (P < 0.05).
Conclusion
IPA is one of the major complications of ILD and its prognosis is poor. Lymphopenia and honeycombing increased the risk of IPA in ILD patients.