Abstract:Drug abuse is a problem that can be influenced by various interrelated factors. This study aims to apply Mamdani Fuzzy logic in predicting the level of drug abuse in Padang City based on several factors obtained from documentation…
umentation and interviews. The input variables used consist of the Age of the Perpetrator, Environment, Socializing, Gender, and Family, while the output variable is the Level of Drug Abuse with Low and High categories. The research stages include data collection, determining variables and fuzzy sets, fuzzification, forming if-then rules, inference using the minimum operator, composition using the maximum operator, and defuzzification using the centroid method. A total of 64 fuzzy rules are used to connect the combination of input variables with the output. Testing is done through manual calculations and implementation using MATLAB. The test results show that the output categories from manual calculations and MATLAB are the same in three test data, namely High, High, and Low. These results indicate that the Mamdani Fuzzy method can be used in modeling the level of drug abuse based on the variables used.
Abstract:Steamed sponge cake (bolu kukus) is a widely consumed traditional snack in Indonesia; however, its reliance on refined wheat flour limits its micronutrient and dietary fiber density. Incorporating composite flours from indigenous…
ndigenous crops, such as tropical pumpkin (Cucurbita moschata) and green pea (Vigna radiata L.), offers a promising strategy for nutritional fortification and dietary diversification. This study aimed to evaluate the proximate composition, sensory acceptability, statistical differences, and production cost feasibility of steamed sponge cakes formulated with varying proportions of pumpkin and green pea flours as partial replacements for refined wheat flour. An experimental design was applied using three formulations: AF09 (Control: 100% wheat flour), BW91 (10% pumpkin flour, 20% green pea flour), and CB88 (15% pumpkin flour, 15% green pea flour). Proximate testing measured moisture, ash, protein, fat, crude fiber, and total carbohydrates (by difference). Sensory acceptance (color, aroma, taste, and texture) was evaluated by 50 semi-trained panelists using a hedonic scale. Data were analyzed non-parametrically using Kolmogorov-Smirnov, Kruskal-Wallis, and post-hoc Mann-Whitney tests. All formulations complied with the Indonesian National Standard (SNI 01-3840-1995) for moisture (31.69%–33.74%), total ash (0.66%–1.05%), crude protein (5.80%–6.65%), and crude fat (1.64%–2.82%). Formula CB88 achieved the highest crude fiber content (0.69%) and lower total energy density (269.88 kcal/100 g). Kruskal-Wallis testing indicated statistically significant differences (p<0.05) among formulations for color, taste, and texture, while aroma exhibited no significant variation (p=0.672). Formula CB88 emerged as the optimal treatment, receiving superior sensory acceptance ratings for color (90% liked) and crumb softness (88% liked) driven by natural β-carotene and pectin-moisture gelation. Production cost analysis demonstrated high economic feasibility for CB88 at IDR 3,374 per 55 g serving. Partial substitution with 15% pumpkin flour and 15% green pea flour (Formula CB88) yields a nutrient-dense, fiber-enriched, and cost-effective functional snack suitable for targeted school nutrition and dietary diversification programs.
Abstract:This study develops a practical framework for evaluating AI-generated brand visuals in a marketing communication context. Using a qualitative case study of an Indonesian sustainable startup (I-NewBee), the research employs…
ys photo-elicitation interviews to compare consumer evaluations of brand assets generated by three text-to-image tools (Midjourney, Neural Love AI, and Leonardo AI). Twelve target-market participants assessed anonymized visual sets (A/B/C) produced under a standardized prompt structure, using a semi-structured protocol informed by attention-stage cues from the AISAS model. Expert input from a visual communication design practitioner was used to triangulate judgments on visual quality and brand fit. Data were analyzed through iterative coding and thematic synthesis to identify recurring evaluation dimensions and decision cues. The findings suggest that perceived brand fit is shaped by visual realism, compositional clarity, brand-consistent signals, and message interpretability, while prompt ambiguity and inconsistent visual cues reduce credibility. The paper contributes an actionable evaluation framework expressed as evaluation dimensions and prompt-design considerations for startups seeking to deploy generative AI responsibly in brand communication
Abstract:Inflation is a fundamental measure of macroeconomic stability that negatively impacts the nation's economy and affects many other macroeconomic variables. Thus, in this study, the major objective was based on modeling and…
d forecasting inflation in Ethiopia and its components using a VAR model. The analysis was based on annual data from 1992 to 2021, encompassing 30 years. The results indicated that all five series were non-stationary at the level but stationary after their first differencing at a 5% level of significance. Johansen's cointegration tests were conducted. The results indicated the presence of at least one co-integration relationship between the variables. The Vector Error Correction Model (VECM) was fitted to model short run and long run relationships among inflation and other macro-econometric series such as GDP growth, government expenditure, money supply, and imports, and the result indicated that the coefficient of error correction term is negative (-0.279), which indicated that the fitted VECM model continues to move toward long run equilibrium and converges. Granger causality tests were employed to explore potential causal relationships. Impulse response analysis and variance decomposition were used to determine the short-run interactions among the variables. Finally, using the fitted model, out-of-sample forecasts were produced, yielding forecasted plots and values for the endogenous variables. According to the forecasted inflation rates for the next five years, prices are projected to decrease by approximately 18.0% in 2022, 6.8% in 2023, and then increase by approximately 8.3% in 2024. Subsequently, prices are expected to decrease by approximately 2% in 2025 and 5% in 2026 over the specified time periods.
Abstract:This study aims to (1) find out the composition of shares that can be formed into an optimal portfolio of IDX High Dividend 20 shares listed on the IDX for the period 2019 - 2022 using the single index model. (2) Knowing…
the proportion of funds that must be invested in each of the IDX High Dividend 20 shares listed on the IDX for the 2019 - 2022 period which forms a portfolio. (3) Knowing the amount of return and risk from the optimal IDX High Dividend 20 portfolio recorded on the IDX for the period 2019 - 2022 using the single index model. The sample of this research is 29 company shares selected based on purposive sampling technique. Data collection techniques are carried out with documentation. Data analysis technique uses a single index model.
The results of this study indicate that there are 12 company shares included in the optimal portfolio, namely ADRO of 11.9%, BBCA of 8.7%, BBRI of 2.5%, BMRI of 13.1%, LPPF of 3.5%, ITMG of 11.3%, PTBA of 0.6% , TOWR 0.5%, DMAS 2.2%, ANTM 14.5%, HEXA 25.3%, and MPMX 5.9%. The expected return that investors get from the optimal portfolio formed is 0.0279 or 2.79% per month. The portfolio risk borne by the investor on investment from the optimal portfolio is (portfolio variance of 0.0144 or 1.44% and a standard deviation of 0.12 or 12% per month.
Abstract:Ada dua macam keterampilan berbahasa yang harus dikuasai siswa sejak mengenal dunia pendidikan, yaitu: keterampilan menulis dan membaca. Dengan menguasai dua keterampilan itu, maka akan terjadi kemampuan awal dalam menguasai…
asai ketrampilan yang lain. Penguasaan keterampilan menulis dan membaca merupakan hal yang mendasari penemuan metode Cooperative Integrated Reading and Composition. Pengembangan CIRC dihasilkan dari sebuah analisis masalah-masalah tradisional dalam pengajaran seperti pelajaran membaca, menulis, seni bahasa dan mengungkap sesuatu dari realita yang ada. Satu fokus utama dari kegiatan-kegiatan CIRC adalah membuat penggunaan waktu lebih efektif. Para siswa bekerja di dalam tim-tim kooperatif yang dikoordinasikan dengan pengajaran kelompok membaca, supaya dapat memenuhi tujuan-tujuan dalam bidang lain seperti pemahaman membaca, kosa kata, pembacaan pesan dan ejaan dalam materi yang sedang dipelajari.
Abstract:Direct incentive programs from a brand manufacturer to a distributor's sales force are uncommon in the Indonesian B2B lighting sector, and their consequences for portfolio composition and distributor profitability have not…
ot been empirically tested. This study examines whether a flat 3 percent quarterly bonus, applied uniformly across a portfolio of more than three hundred products spanning a 600-fold price range, produces unintended consequences beyond its stated goal of volume growth. A sequential explanatory mixed-methods design is used. The quantitative phase analyses 781 product-quarter observations covering 326 products over eleven quarters from mid-2023 through end-2025. The qualitative phase uses confirmatory interviews with seventeen informants from distributor management and sales teams. The incentive program successfully drives all four sales performance dimensions measured in the study, covering volume growth, revenue share, transaction frequency, and a cumulative growth index, all of which are statistically significant. However, higher-priced products attract significantly fewer transactions per quarter and grow more slowly over time. Seven of eight hypotheses are supported. Qualitative findings confirm that the incentive effect adds to total selling activity rather than redirecting it, but transaction attention consistently concentrates on lower-priced products across the eleven-quarter period. The study extends agency theory to a three-party setting and provides the first panel-level evidence of composition effects from a uniform sales incentive in Indonesian B2B distribution.
Abstract:This study investigated the impact of technology-enhanced Word Wall media on students’ writing skills in an EFL context. The research aimed to determine whether the use of Word Wall as an ICT-integrated learning media could…
could significantly improve students’ writing performance, especially in writing descriptive text. The study employed a pre-experimental design with one group pre-test and post-test. The sample consisted of 20 eleventh-grade students selected from SMA Negeri 8 Padangsidimpuan. The data were collected through writing composition tests and observation during the learning process. The results showed that the students’ writing performance improved after being taught through Word Wall media. The mean score of the pre-test was lower than the post-test mean score, indicating a positive effect of the treatment. The hypothesis test also showed that the use of Word Wall media had a significant impact on students’ writing skills. It can be concluded that technology-enhanced Word Wall media is effective in supporting students’ writing development and creating more interactive and engaging EFL learning.
Abstract:This study aims to analyze the effect of capital structure on firm value with profitability as a moderating variable in consumer non-cyclical sector companies listed on the Indonesia Stock Exchange during 2021–2024. Capital…
pital structure was measured using Debt to Asset Ratio (DAR) and Debt to Equity Ratio (DER), firm value was proxied by Price to Book Value (PBV), while profitability was measured using Return on Assets (ROA). This research applied a quantitative approach using secondary data obtained from annual financial reports. The sample consisted of 154 observations selected through purposive sampling. Data analysis was conducted using multiple linear regression and Moderated Regression Analysis (MRA) with SPSS software. The results show that DAR has a positive and significant effect on firm value, while DER has a negative but insignificant effect on firm value. Simultaneously, DAR and DER significantly affect firm value. Furthermore, profitability (ROA) is proven to strengthen the relationship between DAR and firm value as well as between DER and firm value. These findings indicate that an optimal capital structure supported by strong profitability can increase firm value. Therefore, companies should maintain a balanced financing composition and improve profitability to enhance market valuation.
Abstract:This study is motivated by the intensifying competition in Indonesia's banking industry amid digital transformation and growing global economic mobility. In such a context, product innovation becomes a crucial strategy to…
o strengthen a bank's competitive position. PT Bank Woori Saudara Indonesia 1906 Tbk introduced the WiGo Savings product, specifically designed for South Korean citizens who plan to live or work in Indonesia through a pre-account opening scheme. This research aims to analyze the role of WiGo Savings in enhancing the bank's competitiveness, particularly in terms of product differentiation and the potential strengthening of low-cost funds (CASA). The study employs a qualitative descriptive approach with a case study method, using literature review and secondary data analysis from bank reports, media publications, and academic references related to banking innovation. The findings indicate that the pre-arrival account opening mechanism reduces administrative barriers, accelerates service activation, and creates early customer engagement. The product also shows the potential to increase CASA composition, leading to lower cost of funds and greater flexibility in credit pricing. Furthermore, WiGo enhances product differentiation and institutional branding as a bank responsive to cross-border transaction needs. However, its effectiveness depends on successful market education, cross-jurisdiction regulatory compliance, and technological system integration.