Universitas Ahmad Dahlan Journal
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Pengelompokan Dokumen Menggunakan Algoritma Doc2Vec dan HDBSCAN untuk Deteksi Plagiarisme
Get PDFPlagiarisme menjadi tantangan serius dalam lingkungan akademik karena ketersediaan konten digital yang mudah diakses. Cara deteksi plagiarisme yang biasa digunakan, yaitu dengan membandingkan kalimat secara langsung, sering kali bisa dihindari dengan cara mengubah kalimat atau melakukan perubahan kecil pada teks. Penelitian ini bertujuan membuat sistem deteksi plagiarisme yang lebih baik dengan menggunakan algoritma Doc2Vec dan HDBSCAN untuk mengelompokkan dokumen. Metode ini bekerja dengan mengubah dokumen menjadi bentuk vektor yang memiliki makna yang dalam menggunakan Doc2Vec, kemudian mengelompokkan dokumen yang memiliki konten serupa dengan HDBSCAN. Kelebihan HDBSCAN adalah mampu mengklasifikasikan dokumen asli sebagai data yang tidak relevan, sehingga meningkatkan ketepatan hasil deteksi. Uji coba dilakukan pada data esai siswa dan menunjukkan bahwa pendekatan ini mampu mengelompokkan dokumen dengan isi yang mirip, dengan skor Silhouette sebesar 0,6653 yang menunjukkan pemisahan kelompok yang baik. Penelitian ini berkontribusi dalam menyediakan alat deteksi plagiarisme yang lebih andal dan bernuansa, mampu mendeteksi kesamaan ide, bukan hanya kata
Optimasi Electronic Nose Menggunakan Sensor Subset Selection untuk Deteksi Asap Kebakaran Hutan
Get PDFPengembangan sistem deteksi kebakaran hutan telah banyak dilakukan dengan berbagai pendekatan, salah satunya menggunakan electronic nose (e-nose) berbasis larik sensor gas. Namun, penggunaan larik sensor menimbulkan tantangan baru pada sistem, yaitu meningkatnya konsumsi daya, bobot berlebih, redundansi, dan risiko overfitting. Tantangan tersebut dapat diminimalisir dengan mereduksi sensor yang memiliki kontribusi rendah terhadap performa klasifikasi tanpa mengorbankan akurasi sistem. Reduksi sensor pada penelitian ini dilakukan menggunakan metode sensor subset selection dengan konfigurasi baseline yang terdiri atas enam kanal sensor gas (CO, NO₂, MQ7, MQ9, MQ135, dan TGS2600). Proses penelitian meliputi tahapan pra-pemrosesan, ekstraksi ciri, sensor subset selection, serta klasifikasi menggunakan algoritma Random Forest (RF) dan Support Vector Machine (SVM). Hasil evaluasi menunjukkan bahwa tiga sensor inti, yaitu CO, MQ135, dan TGS2600, secara konsisten memberikan kontribusi signifikan terhadap akurasi sistem. Konfigurasi optimal diperoleh dengan lima sensor (CO, MQ7, MQ9, MQ135, dan TGS2600) yang menjaga keseimbangan antara akurasi (±85%) dan efisiensi sistem. Penerapan metode sensor subset selection ini mampu mengoptimalkan larik sensor gas pada e-nose, sehingga dihasilkan sistem deteksi asap kebakaran hutan yang lebih efisien, portabel, dan adaptif sebagai payload UAV
Bioinformatics Analysis to Identify Therapeutic Targets of Artocarpus altilis Compounds in Breast Cancer Therapy
Get PDFBreast cancer remains the most prevalent malignancy among women worldwide, with approximately 2.3 million new cases and 685,000 deaths reported in 2020. Despite advances in surgery, chemotherapy, radiotherapy, endocrine, and targeted therapies, these treatments are often limited by severe side effects and resistance mechanisms. Artocarpus altilis a medicinal plant rich in flavonoids and other bioactive compounds, has been traditionally utilized in various therapeutic contexts and is increasingly recognized for its anticancer potential. This study aimed to systematically identify the molecular targets and signaling pathways associated with A. Artocarpus altilis in breast cancer using a network pharmacology approach, thereby providing novel insights into its therapeutic relevance. The in-silico analysis integrated compound screening, drug-likeness evaluation, target protein prediction, protein–protein interaction mapping, Gene Ontology enrichment, and KEGG pathway analysis. Among 14 candidate compounds, three exhibited poor pharmacokinetic properties based on Lipinski’s Rule of Five. A total of 16 breast cancer-related protein targets were identified, with Epidermal Growth Factor Receptor (EGFR) and Insulin-like Growth Factor 1 Receptor (IGF1R) emerging as the most significant hubs. Functional enrichment revealed that these targets participate in critical oncogenic pathways, including PI3K/Akt, MAPK, and JAK/STAT signaling, which are strongly associated with cell proliferation, migration, and metastasis. The findings highlight the central role of EGFR and IGF1R in mediating the pharmacological effects of A. Artocarpus altilis suggesting its potential as a complementary therapeutic candidate in breast cancer management. While this study provides a systematic bioinformatics-based framework for elucidating the molecular mechanisms of A. Artocarpus altilis, further experimental validation in vitro and in vivo is essential to confirm its efficacy and safety
The effectiveness of image-based media in enhancing essay writing skills of third-grade students at GUPPI Islamic Elementary School, Southwest Papua
No full textThis study aims to improve the essay writing skills of third-grade students at SD Islam GUPPI, Southwest Papua, through the use of image-based learning media. Initial assessment showed an average writing score of 62.3, below the Minimum Completeness Criteria (70), indicating a gap between curriculum demands and students’ actual competence. Using a Classroom Action Research design with two cycles, this study involved 24 students and employed observation sheets, writing rubrics, and performance tests. Data were analyzed using paired t-tests and effect size measures. The results showed a significant improvement in students’ writing skills, increasing from 62.3 in the pre-cycle to 82.5 in the second cycle (t = 5.47, p < 0.05; Cohen’s d = 1.21). The findings support Bruner’s constructivist view that visual stimuli help students build meaning and organize ideas more effectively. The study concludes that image-based media is an effective strategy to enhance students’ imagination, motivation, and expressive ability in elementary writing instruction
Postponement of debt payment obligations through semi-public restructuring
Get PDFIntroduction to the Problem: The COVID-19 pandemic has driven many companies in Indonesia to seek Postponement of Debt Payment Obligations (PKPU) and bankruptcy, highlighting the need for more adaptive legal frameworks. Current PKPU mechanisms are viewed as outdated, failing to address conflicts of interest and broader economic impacts. This research proposes a semi-public restructuring model to enhance fairness and inclusivity.
Purpose/Study Objectives: This study analyzes the urgency of deconstructing the PKPU framework by introducing semi-public restructuring, which integrates judicial oversight and equitable consideration for all parties involved.
Design/Methodology/Approach: This research includes normative legal research. Data analysis uses descriptive methods, deconstruction hermeneutic approaches, cases, legislation, and deduction-syllogism analysis. The legal materials used in this study consist of primary legal sources such as laws and court rulings, as well as secondary materials such as academic literature and legal commentary.
Findings: The findings reveal that implementing a semi-public restructuring model in PKPU cases is essential for creating a more balanced and fair resolution process. Unlike current mechanisms that overly favor creditors, this model offers a comprehensive solution by involving the courts in approving restructuring plans, ensuring that all creditors are treated equally. Additionally, the semi-public restructuring model adapts successful principles from other countries, like the UK, to Indonesia’s legal framework. It is important to understand that semi-public restructuring differs from PKPU, which is commonly affirmed in debt restructuring. Semi-public restructuring goes beyond mere debt adjustment, encompassing broader corporate reorganization. This model can provide legal certainty, maintain business continuity, and promote long-term financial stability by considering broader socio-economic impacts. This semi-public restructuring approach aligns with Indonesia’s Pancasila values and has the potential to make the bankruptcy legal system more adaptive and responsive to the nation’s economic challenges.
Paper Type: Research Articl
Between no-fault and fault-based: Has Indonesia consistently adopted the fault-based divorce law system?
Get PDFIntroduction to the Problem: Under the Indonesian Marriage Law of 1974, the requirement of specific acceptable reasons for divorce underscores the adoption of a fault-based divorce system. However, of the Law also includes “continuous disputes and endless quarrels between the spouses with no hope of reconciliation” as grounds for divorce provided by the Elucidation of Article 39 paragraph (2) letter f, which mirrors the Western no-fault-based divorce concept of irreconcilable differences. This apparent contradiction is intriguing for a comprehensive analysis of which divorce system Indonesia aligns with.
Purpose/Study Objectives: This article evaluates the contradiction between Indonesia’s fault-based divorce system and the existence of grounds for divorce, which include “persistent disputes and endless quarrels between the spouses with no hope of reconciliation.” This evaluation aims to confirm whether Indonesia has consistently adhered to the fault-based divorce law system.
Design/Methodology/Approach: This article utilizes normative juridical research by examining secondary data as the primary source. The research began with identifying legal principles governing divorce, followed by analyzing the historical development of regulations and legal considerations in judicial decisions. The data were qualitatively analyzed using conceptual, statutory, case-based approaches to provide a critical perspective.
Findings: This article reveals that the grounds of “persistent disputes with no hope of reconciliation” first appeared in 1933 under the Indonesian Christian Marriage Ordinance of 1933 under the terminology of onheelbare tweespalt. It was then adopted by the Marriage Law of 1974. Initially, all divorce reasons had to be grounded in the fulfilment of "persistent disputes with no hope of reconciliation," requiring the determination of the party most responsible for the breakdown of the marriage. However, this article concludes that there has been a gradual shift from necessitating identifying fault in "persistent disputes with no hope of reconciliation" to simply recognizing the marriage's breakdown without attributing blame. This ground is now independently sufficient to establish an irreparable breakdown of the marriage.
Paper Type: Research Article
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERBASIS MODEL INTRODUCTION, CONNECTION, APPLICATION, REFLECTION, EXTENTION PADA MATERI ALJABAR SISWA SMP KELAS VII SMPN 2 GONDANG
Get PDFPenelitian ini bertujuan untuk mengembangkan media pembelajaran matematika berupa Lembar Kerja Peserta Didik (LKPD) berbasis model ICARE pada materi aljabar kelas VII SMP/MTs yang memenuhi kriteria validitas dan kepraktisan. Pendekatan penelitian yang digunakan adalah Research and Development (R&D) dengan menerapkan model pengembangan ADDIE. Subjek uji coba dalam penelitian ini melibatkan 34 siswa kelas VII SMP Negeri 2 Gondang. Pengumpulan data dilakukan melalui lembar validasi yang diisi oleh ahli media dan ahli materi, serta melalui angket respon yang diberikan kepada pendidik dan peserta didik. Berdasarkan hasil analisis data, diperoleh temuan sebagai berikut: (1) Hasil validasi oleh ahli media menunjukkan nilai 83,15%, sedangkan validasi oleh ahli materi sebesar 80%, keduanya termasuk dalam kategori “cukup valid”. Rata-rata tingkat validitas keseluruhan mencapai 81,65%, yang berada pada rentang 70%–85%, sesuai dengan kriteria “cukup valid”; (2) Hasil uji kepraktisan yang diperoleh dari angket respon guru dan siswa menunjukkan persentase 82,8% dan 88,8%, yang keduanya tergolong dalam kategori “sangat praktis”. Dengan demikian, dapat disimpulkan bahwa LKPD berbasis model ICARE yang dikembangkan dalam penelitian ini memiliki tingkat validitas dan kepraktisan yang memadai, sehingga layak untuk digunakan sebagai bahan ajar dalam proses pembelajaran matematika di tingkat SMP/MTs
Effectiveness of The Use of Augmented Reality Based Learning Media in Solid Figure Material
No full textThe lack of understanding of mathematical concepts among junior high school students regarding spatial geometry is often due to difficulties in visualizing these objects. Augmented Reality (AR) technology can be utilized as a learning tool to facilitate the learning process, particularly for abstract mathematical concepts like spatial geometry. This research aimed to determine the effectiveness and student response towards the implementation of AR-based learning media in understanding the concepts of spatial geometry among eighth-grade students in junior high school level. The study employs a Quasi-experimental method with a Nonequivalent control group design. The population of this research is the eighth-grade students at SMPN 24 Banjarmasin. Purposive sampling technique is used for sample selection. Research instruments include pre-tests, post-tests, and questionnaires. Data analysis techniques for the tests involve using t-tests and N-Gain tests, while non-test data analysis is conducted using quantitative descriptive data analysis. The research results are as follows: (1) Based on the t-test, there is a significant difference in learning outcomes between students using AR-based learning media compared to those who did not receive such treatment. Furthermore, based on the N-Gain test, the average score for the experimental group is 0.58, categorized as effective, whereas the control group scored 0.15, categorized as less effective. 2) The percentage of questionnaire responses from students regarding the implementation of AR-based learning media for spatial geometry is categorized as good, at 79%. In conclusion, the utilization of AR-based learning media proves to be effective in enhancing students' understanding of spatial geometry concepts in mathematics lessons for eighth-grade students
An Investigation of Grade 12 Students’ Fundamental Understanding of Sequences through Problem Solving Activities at a Lao Demonstration Secondary School
No full textThis study examined how grade 12 students solve problems involving the fundamental concept of sequences, identifying their conceptual understanding and the nature of their reasoning processes. This qualitative study collected the data from 21 students through mathematics problem activities on triangular, square, and cube number sequences. Findings revealed that students often determined the fourth term by summing the first three terms and struggled to generalize patterns. Most relied on visual counting and extended linear or square patterns to cubic contexts without grasping the exponential nature of cube numbers. Overall, students showed limited ability to identify and generalize numerical patterns. The study recommends instructional strategies that integrate visual, numerical, and conceptual representations to deepen understanding of numerical patterns, linking visual representations with symbolic expressions to address misunderstandings. This study suggested further research on enhancing conceptual understanding through multiple representations and digital learning tools in secondary mathematics
The Role of Academic Hope and Emotion Regulation on Psychological Well-being in Students
Get PDFAcademic pressure experienced by students can impact their psychological well-being. This study aims to examine the influence of academic hope and emotion regulation on psychological well-being in students. This research employs a quantitative approach with a cross-sectional design, involving 152 respondents selected through convenience sampling. All variables were measured using a Likert scale and analyzed using hierarchical multiple regression with R (v4.4.2) and RStudio (v2024.12.0+467). The results indicate that academic hope significantly influences psychological well-being (B = 0.68, p < 0.001). Additionally, emotion regulation also contributes to enhancing students’ psychological well-being (B = 0.58, p < 0.001). These findings highlight the crucial role of academic hope and emotion regulation in supporting students' psychological well-being. The implications of this study emphasize the need to strengthen academic hope and emotion regulation within educational settings to optimize students' psychological well-being