Journal of Creativity Student (ISSN 2502-1958 and 2962-603X, see also Portal ISSN) is a double blind peer reviewed journal published by PUI-PT Inovasi Pendidikan Ramah Anak: Manipulatif Matematika dan Sains, Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Negeri Semarang. The Journal publishes scientific papers concerning creativity in broad range and by encouraging the interdisciplinary study of creativity, including the resulty of student’s creativity program. The Editor will only process the article has not been published in other media with the writing format as listed on page manuscript writing guidelines. The Journal has been indexed by DOAJ, GARUDA, SINTA 4, and published biannually every June & December. Citation Analysis of the Journal, please refer to Dimensions and Scopus Citedness. Accredited Certificate: 2022-2026
Design of a Vocal Quality Ranking System Using the P.YIN Algorithm Based on Python 3
In the modern era of the music industry and vocal education, consistent practice is crucial to improving voice quality. However, the vocal evaluation process in recording studio environments is often subjective and not fully supported by objective and measurable evaluation software. This study aims to design and implement a vocal quality rating system called UtaSong based on PYTHON 3. The system utilizes the P.YIN (Probabilistic YIN) algorithm as the core engine for fundamental frequency (F0) extraction, implemented on a Wearnes AW-NE38H Mini Computer. The testing method is carried out by calculating the pitch deviation between the user's vocal and the reference (MIDI) in cent units, which is then automatically converted into a scoring system and grading. The test results indicate that the P.YIN algorithm successfully detects pitch consistently. Acoustic testing proves that a quiet environment (average noise of 38 dB) produces a much more accurate evaluation compared to noisy conditions (65 dB), where background noise affects the pitch deviation rate. In terms of computational performance, the hardware is functionally operational at the minimum threshold, with RAM utilization reaching 87–90% and GPU 98–99%. Therefore, increasing the RAM capacity to at least 8 GB and using a Solid State Drive (SSD) is highly recommended to optimize latency and overall system performance.
Copyright (c) 2026 Journal of Creativity Student https://creativecommons.org/licenses/by/4.0/
Performance Analysis of a 1-Slot 1-Pole Orbital Electric Motor with Rotor Variations Using ANSYS Electronics
Global warming and rising carbon emissions from the transportation sector have accelerated the development of electric vehicles, making the selection of an appropriate electric motor design essential. This study examines the performance characteristics of a ring-type orbital electric motor with a 1-slot 1-pole configuration by comparing two rotor materials, namely pure permanent magnet (Neodymium NdFe30) and low carbon steel (Steel 1010), in terms of flux linkage, electromagnetic force, and torque. Simulations were conducted using ANSYS Maxwell, a Finite Element Method (FEM)-based tool within ANSYS Electronics, employing a Magnetostatic Solver across a rotor rotation angle range of -50° to 50° with a 1° step. The results show that the low carbon steel rotor produced a higher maximum force and torque than the pure permanent magnet rotor, reaching 362.373 N (217% higher than 114.427 N) and 146.829 Nm (17.5% higher than 124.944 Nm), respectively. For flux linkage, both rotors exhibited similar baseline values but moved in opposite directions as the rotor approached its central position, with the low carbon steel rotor increasing to 1.62377 Wb and the pure permanent magnet rotor decreasing to -0.260653 Wb, resulting in a deviation approximately 64.3% larger for the low carbon steel rotor. Across all three parameters, the low carbon steel rotor exhibited sharper and more concentrated fluctuations, whereas the pure permanent magnet rotor produced smoother, more stable, and evenly distributed responses throughout the tested angular range.
Copyright (c) 2026 Journal of Creativity Student
Feasibility Study on an Advanced Layered Haircut Tutorial Video for the Beauty Therapy Program
This study aims to enrich teaching materials by presenting educational videos on advanced layer cut techniques and toevaluate their effectiveness as a learning tool. The research method used is Research and Development (R&D), adopting the ADDIE development model, which includes the phases of needs analysis, design, product development, implementation, and evaluation. Data collection was conducted using validation instruments completed by subject matter experts and media experts, as well as a questionnaire to gather user feedback. The findings of this study indicate that the developed video media was deemed suitable based on assessments by subject matter experts, media experts, and user responses. Furthermore, this instructional video successfully presented the steps for layered hair cutting in a structured, engaging, and easy-to-understand manner, thereby facilitating learners in mastering and practicing the layered hair cutting method.
Potential of Freshly Fallen Elaeocarpus ganitrus Leaves as a Sustainable Ecoprint Biomaterial
The textile industry continues to face environmental challenges due to the intensive use of synthetic dyes and chemical processing, encouraging the exploration of sustainable biomaterials for textile production. Ecoprint has emerged as an environmentally friendly textile coloration technique; however, most studies still rely on fresh leaves harvested directly from plants. This study aimed to describe the ecoprint production process using newly fallen Elaeocarpus ganitrus leaves and to evaluate the quality of the resulting ecoprints. A descriptive quantitative approach with a comparative design was employed using five treatment variants: fresh leaves, untreated newly fallen leaves, steamed newly fallen leaves, vinegar-treated newly fallen leaves, and alcohol-treated newly fallen leaves. Ecoprints were produced on silk-cotton fabric using the steam ecoprint technique. Product quality was evaluated by seven expert panelists based on five indicators: motif clarity, sharpness of leaf vein detail, color intensity, color evenness, and overall aesthetic quality. Data were analyzed using descriptive statistics and the Friedman test. The results showed that all treatment variants produced ecoprints with good to very good quality. Untreated newly fallen leaves achieved the highest overall mean score (4.08), whereas steamed leaves recorded the lowest (3.91). However, the Friedman test indicated no statistically significant differences among treatments across all quality indicators (p > 0.05). These findings demonstrate that newly fallen Elaeocarpus ganitrus leaves can be directly utilized as an alternative ecoprint biomaterial without requiring additional pre-treatment, thereby simplifying the production process while supporting more sustainable utilization of local plant biomass.
Quality of “Vousmevoyes” Ready-to-Wear Fashion Products Featuring QR Codes
The development of fashion products increasingly integrates cultural elements and digital technology to create innovative and functional ready-to-wear garments. This study aimed to evaluate the quality of a ready-to-wear garment with a street tech concept and QR Code integration. The Vousmevoyes product combines streetwear characteristics, batik as a cultural element, and QR Code technology integrated through embroidery on a cropped jacket. The study employed the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model combined with a descriptive quantitative approach. Product quality was evaluated by six panelists consisting of two experts and four trained experts using a five-point Likert scale. The assessment covered six aspects: design, size, aesthetics, sewing technique, garment performance, and uniqueness. The obtained scores were converted into percentages to determine the quality category. The results showed that the overall product quality achieved a score of 82.22%, categorized as very good. The highest score was obtained for the size aspect (93.33%), followed by uniqueness (86.67%) and garment performance (83.33%), while the lowest score was obtained for design (73.33%), which remained in the good category. These findings indicate that the developed garment successfully integrates cultural and digital elements while maintaining good technical and functional quality. Further development should focus on improving the visual coherence of the street tech concept, particularly in integrating the garment silhouette, batik elements, materials, and QR Code technology.
Experimental Analysis of Bamboo Strip Perforation Geometry on the Impact Response and Water Absorption of Epoxy Composites
Local geometric modification of natural fiber reinforcement offers a non-chemical route for tailoring composite behavior, but the effect of perforating bamboo strips on mechanical response and moisture uptake remains insufficiently resolved. This study experimentally evaluated the influence of bamboo-strip perforation geometry on the impact response and short-term water absorption of epoxy composites. Three-layer cotton fiber, bamboo strip, and cotton fiber laminates were fabricated by hand lay-up. Charpy impact testing, adapted from ASTM D6110, compared perforation diameters of 0, 3.2, 4, and 6 mm, while water absorption testing, adapted from ASTM D570, compared 0, 1, 2, and 3 perforations of 3.2 mm diameter after 1, 2, and 3 h of immersion five specimens were tested for each variation. Impact strength showed a non-monotonic response, reaching 200.1 kJ/m² at 6 mm and 157.71 kJ/m² at 4 mm. Water absorption increased with immersion time in all configurations, while the one and three perforation configurations generally produced lower mean values than the unperforated control. The results show that perforation geometry should be treated as a configuration dependent, multi response design variable rather than a uniformly beneficial interfacial modification. Microstructural characterization and inferential analysis are required to verify the mechanisms underlying these trends and their statistical robustness.
Experimental Analysis of Performance, Fuel Consumption, and Noise in Three Exhaust Configurations of a 145 cm³ Bore-Up Yamaha Jupiter Z
Exhaust-system modification is a creative engineering problem because gains in engine performance can conflict with fuel-use efficiency and acoustic control. This study evaluates three exhaust configurations standard, free-flow, and Hight Performance Low Pollution Muffler (HPLPM) Mod 2 on a 145 cm³ bore-up Yamaha Jupiter Z engine to identify their multi-criteria trade-offs. A laboratory experiment measured torque and brake power using a chassis dynamometer, fuel consumption using a volumetric method, and A-weighted sound pressure level under controlled operating conditions. The free-flow configuration produced the highest maximum torque (13.10 N·m) and brake power (13.10 HP) and showed lower fuel consumption at low-to-medium engine speeds, although consumption increased at high speed. HPLPM Mod 2 consistently provided the strongest acoustic control, with a maximum measured level of 95.55 dB(A), compared with 101.85 dB(A) for the free-flow configuration. These results show that no single exhaust configuration simultaneously optimizes all performance criteria. The study contributes a multi-criteria experimental basis for creative exhaust-system selection: free-flow prioritizes performance, whereas HPLPM Mod 2 offers a more balanced compromise between performance and noise control.
Hardness of Hydroxyapatite-Based Scaffolds Derived from Green Mussel Shells at Various Gelatin Concentrations
Large-sized bone defects require scaffolds capable of supporting tissue regeneration while possessing adequate mechanical characteristics. This study aims to analyze the effect of varying gelatin compositions on the hardness characteristics of hydroxyapatite-based scaffolds synthesized from green mussel shells (Perna viridis). Hydroxyapatite was synthesized using calcium precursors derived from calcined green mussel shells and subsequently characterized using X-Ray Diffraction (XRD). The scaffolds were fabricated using the slurry casting method with gelatin composition variations of 2%, 3%, and 4%, alongside hydroxyapatite compositions of 98%, 97%, and 96%, respectively. The mechanical characteristics of the scaffolds were tested using a Copley TBF 1000 Tablet Hardness Tester to obtain the breaking force values. The XRD results demonstrated that the synthesized material was dominated by a hydroxyapatite phase with a weight percentage of 98.7%, while the calcite and portlandite phases were 1.0% and 0.3%, respectively. The testing results indicated that the commercial scaffold exhibited the highest breaking force value of 3.51 kg. For the green mussel shell scaffolds, the highest value was obtained at the 2% gelatin variation at 1.37 kg, followed by 4% gelatin at 0.96 kg, and 3% gelatin at 0.69 kg. After conversion using the ASTM C496 equation, the mechanical value of the commercial scaffold was 0.609 MPa, whereas the 2%, 3%, and 4% gelatin variations were 0.238 MPa, 0.120 MPa, and 0.130 MPa, respectively. All of these values remained below the mechanical requirement of ≥1.5 MPa. Thus, the variation in gelatin composition influenced the mechanical characteristics of the scaffolds in a non-linear manner. The 2% gelatin composition produced the best mechanical characteristics compared to the other variations; however, it still requires further development to meet the mechanical requirements for bone graft materials.
In Vitro Degradation Rate of Gelatin/Hydroxyapatite CompositeScaffolds Derived from Blue Swimming Crab Shells
Bone tissue damage is a serious health problem that requires bone graft treatments. Blue swimming crab shell waste has proven effective for utilization as a hydroxyapatite (HA) source due to its high calcium content. However, HA possesses a drawback in the form of brittle mechanical properties, making the addition of an organic polymer matrix such as gelatin necessary. This study aims to analyze the effect of varying gelatin and HA compositions (6:94, 7:93, and 8:92 wt%) on thein vitro degradation rate of HA-Gel scaffolds. HA was calcined and synthesized using a microwave-assisted precipitationmethod, and subsequently characterized using X-Ray Diffraction (XRD). The scaffolds were fabricated using the slurrycasting method and then dried using the oven drying method. The in vitro degradation rate testing was conducted in a Phosphate Buffered Saline (PBS) solution at a temperature of 37°C for 1, 2, 3, 6, 12, 18, and 24 hours. The XRD resultsvalidated that blue swimming crab shells are effective in producing HA with a phase purity level reaching 99.1%. The fabrication of HA-Gel scaffolds using the slurry casting method successfully formed uniformly shaped scaffolds, althoughsurface defects in the form of voids were present. The in vitro degradation rate exhibited a residual mass of 100–101.8% across all variants, indicating that degradation had not yet occurred; instead, swelling by the gelatin matrix took place. The variant with the highest HA content (94%) demonstrated the largest and most fluctuating mass increase, while the variantwith the highest gelatin content (8%) was the most stable, indicating good mass resistance of the HA-Gel scaffolds duringthe initial immersion phase.
Evaluation of Gelatin Concentration Variations on the Porosity ofGreen Mussel Shell Hydroxyapatite Scaffolds
The increasing demand for scaffolds in orthopedic applications has driven research into locally sourced biomaterials. Thisstudy evaluates the effect of varying gelatin concentrations (2%, 3%, and 4% w/w) on the porosity of hydroxyapatite (HA) scaffolds synthesized from green mussel shells (Perna viridis). HA was synthesized through a calcination process at a temperature of 900°C, followed by microwave-assisted ultrasonic precipitation, yielding a phase purity of 98.4% as confirmed by X-ray diffraction (XRD). The composite scaffolds were fabricated by mixing HA with type B gelatin at threeconcentrations, molded into cylindrical molds (6 mm diameter × 6 mm height), and dried at 40°C for 24 hours. Porositywas measured using the Archimedes liquid displacement method with 96% ethanol. The results indicated porosity valuesof 57.4% ± 1.68%, 60.2% ± 2.97%, and 58.1% ± 1.15% for gelatin concentrations of 2%, 3%, and 4%, respectively. All formulations exceeded the lower limit of commercial scaffold porosity standards (35–50%), with the 4% formulationapproaching the upper limit of that range. This study demonstrates that HA derived from green mussel shells combinedwith gelatin produces scaffolds with a porosity comparable to commercial products, thereby offering an economical andsustainable alternative for bone tissue engineering applications.
Density of Hydroxyapatite-Gelatin Composite Scaffolds Derived from Blue Swimming Crab Shells
Hydroxyapatite-gelatin composite scaffolds have potential applications in bone tissue engineering as they combine the bioactive properties of hydroxyapatite with the capability of gelatin as a polymer matrix. This study aims to analyze the density of hydroxyapatite-gelatin composite scaffolds derived from blue swimming crab shells at varying gelatin concentrations of 2%, 3%, and 4%. Hydroxyapatite was synthesized from blue swimming crab shell powder through a microwave-assisted precipitation method, followed by characterization using X-ray diffraction (XRD). The scaffolds were fabricated via the slurry casting method using a total mass of 4 g of the hydroxyapatite-gelatin mixture. Density testing was conducted on three specimens for each variant using the hydrostatic weighing method based on Archimedes' principle, with 96% ethanol as the immersion fluid. The XRD characterization results demonstrated that the synthesized powder was dominated by a hydroxyapatite phase at 99.6%, with minor phases of calcite at 0.3% and portlandite at 0.1%. The average densities of the scaffolds at gelatin concentrations of 2%, 3%, and 4% were 2.161 g/cm³, 2.259 g/cm³, and 2.321 g/cm³, respectively. Descriptively, an increase in gelatin concentration within the tested range was followed by an increase in the average scaffold density. Further testing on porosity, morphology, mechanical properties, degradation, and biocompatibility is required to determine the more optimal scaffold composition.
Porosity of GEL-HA Composite Scaffolds Synthesized from Blue Swimming Crab Shells
Bone defects are a serious health problem requiring graft materials (scaffolds) with ideal porosity. This study aims todetermine the effect of varying gelatin concentrations on the porosity of hydroxyapatite-gelatin composites based on blueswimming crab shells. Blue swimming crab shells were utilized as an alternative source of hydroxyapatite (HA) becausethey are rich in calcium content and possess biocompatible characteristics. However, pure HA exhibits brittle mechanicalproperties, necessitating the addition of gelatin to bind the structure and reduce brittleness. The HA was processed usingthe microwave method. Scaffolds with varying gelatin concentrations of 2%, 3%, and 4% were fabricated using slurrycasting and oven drying methods. Characterization using X-Ray Diffraction (XRD) demonstrated that the HA synthesissuccessfully achieved a purity level of 99.6%. Porosity testing conducted using the liquid displacement method indicatedthat the pore percentage values ranged from 61.90% to 62.84%. The porosity trend exhibited a non-linear pattern, with thehighest porosity value achieved by the HAG-3 specimen at 62.84%. Based on the conducted research, the obtainedporosity values have met the minimum threshold for scaffolds, which is in the range of 50% to 90%.
The Effectiveness of GeoGebra-Assisted Problem-Based Learning with a Deep Learning Approach on Critical Thinking Skills
Critical thinking is a higher-order thinking skill that needs to be developed in mathematics education. However, students' proficiency in this area remains relatively low. This study aims to analyze the effectiveness of Problem-Based Learning (PBL) integrated with a GeoGebra-assisted deep learning approach on students' critical thinking skills. This research employed a quantitative method with a pretest-posttest control group design. The sample comprised two eighth-grade classes at SMP Negeri 41 Semarang, selected through a cluster random sampling technique, consisting of an experimental group of 32 students and a control group of 32 students. The experimental group was subjected to PBL with a GeoGebra-assisted deep learning approach, whereas the control group received standard PBL instruction. Data were collected using a critical thinking skills test that had met the validity and reliability criteria. The data were subsequently analyzed using a classical mastery test, an independent sample t-test (test of two means), and a test of two proportions. The results indicated that the experimental class achieved classical learning mastery, demonstrated a higher average in critical thinking skills, and showed a greater proportion of mastery compared to the control class. Consequently, the application of PBL combined with a GeoGebra-assisted deep learning approach is effective in enhancing students' critical thinking skills and can serve as an innovative alternative strategy in mathematics instruction.
Mathematical Creative Thinking Skills of Junior High SchoolStudents in a Problem-Based Learning Model Featuring Open-Ended Problems Viewed from Mathematics Anxiety
This study aims to (1) determine the classical mastery of mathematical creative thinking skills, (2) examine whether thestudents' average mathematical creative thinking skills exceed the minimum mastery criteria (KKTP), (3) assess theimprovement in students' mathematical creative thinking skills, and (4) describe students' mathematical creative thinkingskills in terms of mathematics anxiety. This study employed a mixed-methods approach with a sequential explanatorydesign. The research population comprised seventh-grade students at SMP Negeri 10 Semarang during the 2025/2026 academic year. The results indicated that (1) the implementation of the PBL model featuring open-ended problemsachieved classical learning mastery, (2) the students' average mathematical creative thinking skills surpassed the minimum mastery criteria, (3) the improvement in mathematical creative thinking skills was in the moderate category with an N-Gain score of 0.6577, and (4) students with low mathematics anxiety met all indicators of mathematical creative thinkingskills, students with moderate mathematics anxiety met most of the indicators, whereas students with high mathematicsanxiety only met some indicators of mathematical creative thinking skills.
Effect of Sediment Filter Pore-Size Variation in a Reverse Osmosis System on Treated Water Quality
Drinking-water quality is commonly evaluated from its dissolved-solids content, pH, turbidity, and color. Although reverse osmosis (RO) can substantially improve these characteristics, stable performance depends on feed-water conditions and appropriate pretreatment. This experiment examined whether sediment-cartridge pore size altered the quality of water produced by a small RO unit. Cartridges rated at 5, 3, and 1 micrometers were tested. TDS, pH, and turbidity were the primary response variables, while color was included as a supporting indicator. The untreated feed contained 18 mg/L TDS, had a pH of 7.44, turbidity of 0.38 NTU, and color of 11 TCU. Bottled drinking water, assessed only as a benchmark, contained 235 mg/L TDS, had a pH of 7.93, turbidity of 0.07 NTU, and color of 2 TCU. With the 5-micrometer cartridge, the RO product recorded 26 mg/L TDS, pH 7.40, turbidity of 0.05 NTU, and color of 4 TCU. Corresponding results for the 3-micrometer cartridge were 11.3 mg/L, 7.66, 0.53 NTU, and 3 TCU; for the 1-micrometer cartridge, they were 11.7 mg/L, 7.63, 0.57 NTU, and 3 TCU. The 3-micrometer configuration produced the lowest TDS, whereas the 5-micrometer configuration produced the lowest turbidity. Thus, pore-size variation was associated with observable differences under the test conditions. Because measurements were not replicated, these patterns should be verified through repeated trials before a causal effect is inferred.
Experimental Study of PGC-01 Grounding Cable Addition on Urate Evo-7 Engine Wiring System by Pandawa Team
The ever-increasing demand for fossil fuels and the environmental impact of electric vehicles have driven innovation in Internal Combustion Engine (ICE) efficiency. This study explores the effect of installing a silver-based PGC-01 grounding cable on the engine wiring system of the Urate Evo-7 Pandawa Team energy-efficient vehicle. This study employed an experimental method with three different installation schemes. Scheme 1 connects the battery to the negative ignition coil and the throttle body sensor. Scheme 2 connects the battery to the negative ignition coil and the crankcase. Scheme 3 connects the battery to the negative ignition coil and the negative spark plug. Testing was conducted statically at 3000 rpm and dynamically with acceleration variations of 0–30 km/h, 0–35 km/h, and 0–40 km/h. The results show that Scheme 3 has the greatest impact on reducing fuel consumption. The reduction reached 12.1% in the static test and 16% in the dynamic acceleration test from 0 to 35 km/h. This makes it the most optimal configuration for the “kill and run” strategy in energy-efficient vehicle competitions.
Development of Google Sites-Based Learning Media Integrated with Wizer.me Using CBL-STEM Approach for Relations and Functions
Advances in digital technology call for innovative, interactive mathematics learning media to facilitate the understanding of abstract concepts, such as relations and functions. This research and development study aims to describe the design process, the level of technical feasibility, and the effectiveness of using Google Sites-based learning media integrated with Wizer.me interactive digital worksheets. Using a descriptive method in a limited-scale pilot study, the study subjects included 32 eighth-grade students from Class VIII-F at SMP Negeri 15 Semarang and a mathematics teacher serving as an expert validator. Data were collected through validation sheets, classroom observation, post-instructional interviews, student reflections, and learning outcome assessments. The results indicate that the learning medium met the criteria for “highly suitable,” with a validation score of 86.76% from the subject teacher; the implementation process was effective, with an average class assessment score of 76.16; and the majority of students provided positive feedback, although internet infrastructure constraints remained the primary technical challenge in the field. These results conclude that the integration of Google Sites and Wizer.me has great potential to serve as an alternative platform to support digital mathematics learning in schools.
Performance Evaluation of a Spray Dryer Based on Capacity and Yield using Biancaea sappan Extract
This study evaluates the performance of pressure nozzle type spray dryer. Maximum evaporation capacity was tested using water under various nozzle air pressures, airflow rates and at two inlet air temperatures. Solution of biancaea sappan extract mixed with maltodextrin were used to analyze powder yield, wall deposition, color of the powder, and efficiency of the spray dryer. An increase of nozzle air pressure and airflow rate gives finer atomization resulting in higher heat transfer. Combined with an increase in inlet air temperature, maximum evaporation capacity is achieved and can increase the powder yield of the spray dryer due to better moisture removal. Significant wall deposition was found in the head, drying chamber and cyclone duct. Visual analysis of the powder indicated that higher temperatures and prolonged residence time advanced the Maillard reaction, darkening the powder and could degrade its texture. A rather significant amount of powder loss was observed which is likely caused by fine particles leaving with exhaust air.
Analysis of the Quality of Aurelia’s Ready-To-Wear Embroidered Set Using Embroidery Techniques Based-on Expert Evaluations
This study aims to analyze the quality of the Aurelia Embroidered Set apparel product, which is based on embroidery techniques, using the expert judgment method. The background of this study is rooted in the growing demand for ready-to-wear products that not only possess aesthetic value but also measurable technical and functional quality. The research method used is descriptive quantitative with a product evaluation design. The research subjects consisted of five apparel experts selected using purposive sampling, with an assessment instrument in the form of a Guttman scale covering six indicators: design, sizing, aesthetics, sewing technique, garment performance, and product uniqueness. Data were analyzed using descriptive statistics to determine the percentage of suitability. The results showed that all indicators fell into the “highly suitable” category, with an average percentage of 91.00%. The sewing technique aspect received the highest score, while the sizing aspect received the lowest score but still fell within the “highly suitable” category. The conclusion of this study indicates that the Aurelia Embroidered Set product has good quality in terms of design, production techniques, aesthetics, and comfort, making it suitable for development as an innovative ready-to-wear product in the fashion industry.
Design Innovation of the Scarlet Grace Mini Dress Through the Application of Butterfly Batik Appliqué on a Denim Bustier
The dynamic development of the fashion industry has encouraged the emergence of various innovations in fashion design, including the utilization of local cultural elements as sources of inspiration. Batik, as an Indonesian cultural heritage, has the potential to be developed not only as the main material for clothing but also as a decorative element that can enhance the aesthetic value of a fashion piece. This article aims to describe the design process of the Scarlet Grace mini dress, which applies butterfly-shaped batik fabric on a denim bustier. The design process was carried out through the stages of idea exploration, design development, and realization of the final product. The design concept was inspired by the butterfly, symbolizing beauty, transformation, and the gentle nature of women. The garment was created in the form of a mini dress combining a denim bustier with a black organza balloon skirt. The uniqueness of this design lies in the application of butterfly-shaped batik fabric embellished with beadwork forming the butterfly’s body, creating a more vivid and attractive appearance. The use of denim and organza materials, which possess different characteristics, also provides a harmonious contrast to the garment. The results of the design process indicate that the butterfly batik application on the denim bustier successfully becomes the focal point while strengthening the visual identity of the work. Through the combination of traditional and modern elements, Scarlet Grace is expected to serve as an innovative alternative for party dress design development while preserving cultural values.
Modern Tailoring in Linear Rebellion Fashion Collection at Danjyo Hiyoji
The fashion industry continues to develop along with the increasing demand for products that possess not only aesthetic value but also a strong visual identity. Danjyo Hiyoji is one of Indonesia’s local fashion brands recognized for its contemporary streetwear concept combined with modern tailoring. This article aims to describe the development process of the Linear Rebellion fashion collection through the application of modern tailoring and decorative details as a final project during the Industrial Practice Program at Danjyo Hiyoji. The study employed a descriptive quantitative method with a design development approach supported by observation, documentation, literature review, and product assessment by panelists. The development stages included visual research, moodboard preparation, concept development, design creation, material selection, production process, and final product evaluation. The Linear Rebellion concept was represented through vertical stripe motifs symbolizing order and exposed zipper details symbolizing courage in exploring fashion design. The evaluation results indicated that the collection achieved an average score of 95.93%, categorized as excellent. The design aspect obtained 96.66%, size 98.90%, aesthetics 85.56%, sewing technique 100%, garment performance 98.90%, and uniqueness 95.56%. These findings demonstrate that the application of modern tailoring and decorative details successfully produced a fashion collection with excellent construction quality, functionality, aesthetics, and a strong visual identity in accordance with the design characteristics of Danjyo Hiyoji.
The Creation Of The “Azuré Papilio” Custom Kebaya Through Chantilly Fabric Upcycling As A Sustainable Fashion Practice At Jahitbihan
The increasing amount of textile waste generated by the fashion industry has encouraged designers and fashion businesses to implement sustainable fashion practices through material reutilization and upcycling. This study aims to describe the creation process of the “Azuré Papilio” custom kebaya developed from leftover Chantilly lace fabric at Jahitbihan and evaluate its feasibility as a marketable fashion product. The study employed a descriptive qualitative approach through an industrial internship method. Data were collected through observation, documentation, interviews, and product feasibility assessments conducted by five expert respondents. The creation process involved material selection, design development, pattern making, garment construction, fitting, and finishing. Product feasibility was evaluated based on six aspects, namely design quality, size quality, aesthetic quality, sewing technique quality, garment performance quality, and garment uniqueness quality. The results revealed that sewing technique quality achieved the highest score (99.33%), followed by garment performance quality (97.33%), aesthetic quality (90.67%), design quality (90.00%), size quality (88.67%), and garment uniqueness quality (80.67%). The overall average score reached 91.11%, placing the product in the Very Good category. These findings indicate that upcycling leftover Chantilly lace fabric can successfully produce a high-quality custom kebaya with aesthetic, functional, and commercial value while supporting sustainable fashion development. Therefore, the “Azuré Papilio” kebaya demonstrates the potential of textile waste utilization as an innovative strategy for sustainable fashion practices within local custom fashion businesses.
The Quality of the Rona Senandhika Kebaya with the Application of Floral Beading Details on Chantilly Lace
This Study aimed to create the Rona Senandhika kebaya by applying floral beading details to Chantilly lace material and to determine the feasibility level of the resulting product. The study employed a practice-based research approach, which positions the creative practice as an integral part of the research process. The research stages included concept development, design planning, pattern making, fabric cutting, sewing, the application of floral beading details, and the final finishing process. Product feasibility testing was conducted using an assessment sheet involving 21 panelists, consisting of 3 expert panelists and 18 students of Fashion Education who had completed the Haute Couture and Women's Garment Production courses. The data were analyzed using descriptive percentage analysis. The results showed that the Rona Senandhika kebaya was successfully created in accordance with the designed concept through the combination of Chantilly lace material and floral beading details, resulting in a feminine, graceful, and elegant appearance. The feasibility test results indicated that the design aspect achieved a score of 94.7%, the size aspect 96.7%, the aesthetic aspect 96.7%, the sewing technique aspect 96.5%, and the uniqueness aspect 94.6%. All aspects were categorized as Highly Feasible. Therefore, the application of floral beading details to Chantilly lace material was considered effective in enhancing the aesthetic value and producing a kebaya that is feasible and possesses a strong design character. Keywords: kebaya, floral beading, Chantilly lace, feasibility assessment, fashion design.
Visualization of Corset Transparency Techniques nd Velvet Fabric Textures in the “Viraadhya” Evening Gown Based on the Design Characteristics of Jacob Wil
The development of contemporary fashion has transformed clothing from a functional necessity into a medium of visual expression that embodies both aesthetic and symbolic values. This study aims to analyze the design characteristics of Jacob Wil as reflected in the evening gown “Viraadhya” through the visualization of corset transparency techniques and velvet fabric texture as key elements in shaping the garment’s aesthetic value. The research employs a qualitative approach using a descriptive-analytical method. Data were collected through visual observation, documentation studies, and literature reviews. The analysis focuses on design aesthetics, garment construction, material texture, and fashion semiotics. The findings indicate that “Viraadhya” successfully represents Jacob Wil’s distinctive design characteristics through the application of a structured mermaid silhouette, the exploration of transparent corset construction, and the combination of velvet and transparent materials that create a visual contrast between strength and softness. The corset transparency technique functions not only as a constructive element but also as an aesthetic strategy that reinforces the garment’s visual identity. Meanwhile, the use of velvet fabric contributes a sense of luxury, drama, and visual depth that supports the overall design narrative. This study demonstrates that the exploration of garment construction and material innovation can serve as an important strategy in establishing visual identity within contemporary evening gown design. Keywords: Corset transparency, velvet fabric, evening gown, Jacob Wil, fashion Design.
Rynetta Dress: Integrating Traditional Accents into Contemporary Party Wear
Party wear is a fashion product that continues to develop in response to the increasing demand for formal attire that not only serves functional purposes but also reflects aesthetic value and cultural identity. This study aimed to create a women's party dress entitled Rynetta Dress, which integrates traditional elements and embellishments into a modern design. The study employed a creative research method consisting of design planning, pattern making, fabric cutting, sewing, garment structure installation, and decorative finishing. The main materials used were satin fabric combined with lining, tricot, boning, beads, pearls, and floral appliqués as decorative elements. The result is a women's party dress featuring an I-line silhouette and a mermaid-style skirt that creates an elegant and feminine appearance. The uniqueness of the design lies in the use of a detachable bolero with patterned fabric accents on the shoulder area as the garment's focal point, complemented by embellishment details that enhance its aesthetic value. The results indicate that the product demonstrates compatibility between the design concept, material selection, construction techniques, and the characteristics of the target users, namely women aged 20–35 years. This work is expected to serve as an alternative reference for developing party dress designs that harmoniously combine modern and traditional elements. Keywords: party dress, traditional elements, embellishment, fashion design, Rynetta Dress
Didactic Design Research in Overcoming Epistemological Barriers in Mathematics Learning; A Systematic Literature Review
Epistemological obstacles are among the primary factors that impede students' understanding of mathematical concepts. Didactical Design Research (DDR) emerges as a learning-obstacle-based approach that offers a systematic framework for identifying and addressing these barriers. However, comprehensive reviews mapping DDR research trends in the context of epistemological obstacles in mathematics education remain limited. This study aims to: (1) analyze trends in DDR research on epistemological obstacles, (2) identify the most prevalent types of epistemological obstacles, (3) map the didactic design strategies employed, and (4) assess the effectiveness of DDR implementation. A Systematic Literature Review (SLR) following the PRISMA protocol was conducted. Articles were retrieved from Google Scholar, ERIC, and Sinta databases covering 2015–2025. After rigorous selection, 27 articles met the inclusion criteria. Findings indicate that: (1) DDR research has grown significantly from 2020 to 2025, particularly at the junior and senior secondary levels; (2) dominant epistemological obstacles involve difficulties in abstract concept comprehension, symbolic misconceptions, and failure to transfer concepts; (3) effective didactic strategies include mathematical visualization, contextual scaffolding, reflective discussion, and structured cognitive conflict; and (4) consistent DDR implementation demonstrably improves students’ conceptual understanding. These findings carry strategic implications for developing adaptive, obstacle-informed mathematics learning designs.
Kebaya Fashion Quality 'Veloura Merupa' with the Application of Illusion Bustier
Modern kebaya continues to develop through the application of various fashion design and construction techniques that aim to improve aesthetic value and product quality. One of the techniques that is widely used is the bustier illusion, which is a construction technique that creates a visual illusion on the bustier so that it produces an elegant look and blends in with the wearer's body. This article aims to describe the quality of Veloura Merupa kebaya clothing that applies the illusion bustier technique. The method used is descriptive with a product analysis approach. The aspects analyzed include design quality, fashion construction, material suitability, application of decorative techniques, and the quality of the final appearance of the fashion. The results of the analysis show that the Veloura Merupa kebaya has good quality through the application of an illusion bustier that is able to shape the body silhouette proportionally, the use of materials that support comfort and aesthetics, and application details that give a luxurious and elegant impression. The combination of burgundy colors, transparent lace, draping, and sequin applications strengthens the feminine and classy character of modern kebaya. Thus, the application of the illusion bustier on the Veloura Merupa kebaya is able to improve the visual quality and aesthetic value of the overall fashion.
Standardization of Basic Pastry Techniques for Beginners: A Theoretical and Practical Review in the Development of a Guidebook
The art of pastry making is often considered the most intimidating culinary branch for beginners because it requires temperature precision, accurate folding techniques, and a deep understanding of ingredient characteristics. This study aims to describe the background and urgency of compiling the guidebook “Various Pastry Preparations for Beginners” as an applicable culinary literacy instrument. The method used is descriptive qualitative through observing culinary market trends and analyzing the need for independent learning resources. The results of the discussion show that the low success rate of beginners in making pastry is caused by the fragmentation of information on digital media that does not present standard basic techniques. The preparation of this book is intended to fill this gap by simplifying the methodology without reducing the quality of the final product. Through an instructional visual approach and validated (fail-proof) recipe formulations, this book not only serves as a hobby guide but also as a stimulus in building readers' self-efficacy to enter the MSME-based creative economy sector. In conclusion, strengthening literacy through a structured guidebook is a key factor in transforming amateur skills into professional competence in the pastry field.
The Strategic Role of the Kitchen in Supporting Food and Beverage Operations at Melva Balemong Hotel & Resort
This study aims to analyze the strategic role of the kitchen in supporting Food and Beverage operations at Melva Balemong Hotel & Resort. As a key contributor to service quality and revenue, the kitchen serves as the central production unit responsible for food quality, consistency, safety, and operational efficiency. Using a qualitative descriptive approach through a literature review of seventeen scientific articles, this study examines kitchen operations, human resource management, standard operating procedures, hygiene and sanitation, product innovation, and service quality in the hospitality industry. The findings reveal that effective kitchen operations depend on employee competence, adherence to standard operating procedures, hygiene and sanitation practices, adequate equipment, and food product innovation. The kitchen also plays a significant role in enhancing customer satisfaction through product quality, breakfast services, pastry and bakery production, and menu differentiation. The study concludes that the kitchen is not merely a food production area but a strategic component that supports service quality, operational effectiveness, customer satisfaction, and hotel competitiveness. Therefore, continuous improvements in human resources, operational systems, and kitchen facilities are necessary to sustain the success of Food and Beverage operations at Melva Balemong Hotel & Resort. Keywords: Kitchen Operations, Food and Beverage, Hotel Management, Service Quality, Customer Satisfaction
An Analysis of Garment Quality in "The Goddess" Themed Apparel Incorporating Wastra and Cheongsam Embroidery
The development of the fashion industry encourages the emergence of design innovations that combine traditional and modern elements as a form of cultural preservation. One of the developing approaches in fashion is the concept of cultural hybridity through the integration of different cultural elements in one piece of garment. This study aims to design and test the quality of The Goddess-themed clothing based on wastra (traditional Indonesian textiles) and cheongsam embroidery as a form of cultural-based fashion design exploration. The study uses the Research and Development (R&D) method with a 4D development model that includes the define, design, develop, and disseminate stages. The developed product is a mermaid silhouette dress with drapery details, a tailed cape, bird and flower motif embroidery, and sequin embellishments. The main materials used are Tribusono batik and gold liquid metallic fabric to strengthen the visual character of the garment. Quality testing was carried out by expert and trained validators using indicators of design, size, sewing techniques, aesthetics, garment performance, and special features. The results showed that the garment obtained a quality percentage of 97.61% with the category of "very high quality". These results demonstrate that the combination of Indonesian textiles and cheongsam embroidery can produce aesthetically pleasing, innovative clothing with a strong cultural identity. This research is expected to contribute to the development of traditional culture-based fashion design in the context of modern fashion.