The use of synthetic feed additives in Peking ducks has adverse effects on their growth and productivity. Spirulina sp., a blue-green algae, has the potential to be used as a safe feed additive that can enhance the growth and productivity of ducks. This study aims to analyze the effects of Spirulina (Spirulina sp.) powder as a feed additive on the histomorphometry of the duodenum in Peking ducks (Anas platyrhynchos), focusing on the duodenal lumen diameter, villus height, villus width, mucosal tunic thickness, submucosal tunic thickness, and muscular tunic thickness. This study used a Completely Randomized Design (CRD) with 35 ducks divided into 5 treatments and 5 repetitions. The treatments included a control group and the addition of spirulina powder in feed at concentrations of 2.5%, 5%, 7.5%, and 10%. The data were analyzed by ANOVA with a significance level of 5%, followed by Duncan's test. The results of data analysis showed that spirulina powder had a significant effect (P<0.05) on villus height and duodenal mucosa tunica thickness. The conclusion of this study is that spirulina powder has the potential to be used as a feed additive to improve digestive performance in male Peking ducks, as evidenced by the increase in villus height and thick tunica mucosa in the small intestine. The novelty of this study lies in the utilization of spirulina powder as a feed additive to increase the size of the duodenal tissue structure in Peking ducks. The results of this study are expected to be a new reference on the potential of spirulina as a feed additive to improve poultry feed quality and digestive performance, especially in peking ducks.

The handling of hazardous chemicals, such as sulfuric acid (H₂SO₄), in industrial processes requires a control system that ensures both operational reliability and safety. Manual pump operation in such contexts carries a significant risk of over-pumping, leaks, and exposure, which can lead to environmental contamination and safety hazards. To address this issue, this study focuses on the design and implementation of an automatic pump control system prototype using the Arduino Mega 2560 microcontroller. The system integrates three key sensors: a float switch for basic level detection, an ultrasonic sensor (HC-SR04) for precise liquid level measurement, and a water flow sensor (YF-S201) for monitoring flow rate. The prototype is programmed to automatically regulate pump operation based on real-time input from the sensors. When the liquid level reaches a predetermined threshold, the pump activates or deactivates accordingly. Sensor data, including fluid height and flow rate, are displayed in real-time on a 3.5-inch TFT LCD, allowing for direct operator monitoring. Both the hardware configuration and software algorithms were tested for functionality, response time, and accuracy under simulated industrial conditions. The results indicate that the system can reliably control pump activation with minimal error rates. The ultrasonic sensor demonstrated an average measurement error of 0.94%, while the water flow sensor achieved an error rate of 1.19%. The software successfully processed sensor data and executed output actions consistent with the programmed logic. Overall, this automated control system proved effective in mitigating the risk of over-pumping and improving safety in handling hazardous chemical fluids. Given its accuracy, reliability, and cost-effectiveness, the developed prototype is considered suitable for small- to medium-scale industrial applications, with potential for further refinement to meet larger operational demands.

The rapid growth of information technology has driven digital transformation in various sectors, including micro, small, and medium enterprises (MSMEs), the backbone of the Indonesian economy. In response to the challenges and opportunities of digitalization, the Surabaya City Government launched the Peken e-commerce platform on October 31, 2021. This platform aims to help MSMEs market their products online, expand market reach, and increase competitiveness. However, the use of digital systems also presents new challenges, particularly in terms of cybersecurity. Dependence on technology opens the door to various threats that can compromise data confidentiality, integrity, and availability. This study aims to analyze and evaluate information security risks on the Peken Surabaya website using a risk management approach based on the ISO/IEC 27005:2019 standard. The analysis method involves identifying information assets, recognizing potential threats, identifying vulnerabilities, and assessing risk levels based on the likelihood of occurrence and impact. To support the analysis, technical testing was also conducted using the Open Web Application Security Project Zed Attack Proxy (OWASP ZAP) tool. The research results indicate that most of the risks faced by Peken Surabaya are moderate to very high. These risks include Distributed Denial of Service (DDoS) attacks, user data leaks, and the lack of a two-factor authentication (2FA) system. Based on these findings, a risk management strategy was developed using the Risk Modification, Risk Sharing, Risk Retention, and Risk Avoidance approaches. Furthermore, this study recommends security controls based on ISO/IEC 27005 and OWASP Top 10 to enhance system protection. These findings emphasize the importance of implementing international standards-based risk management in maintaining the continuity and security of digital public services, particularly those supporting the MSME sector in the digital era.

This research is motivated by the importance of understanding the niqab (face veil) as a religious symbol and an identity marker for Muslim women, which continues to spark public debate in Indonesia. The niqab is often viewed from various perspectives—religious, cultural, social, and political—making it a controversial topic. These differing viewpoints highlight the need for a deeper exploration of the meaning and practice of wearing the niqab, especially within Islamic higher education institutions. The study aims to examine both the normative and sociological aspects of niqab use among female students at Ma’had Al-Birr, Muhammadiyah University (Unismuh) Makassar. This institution is known for having a significant number of students who wear the niqab, each with different backgrounds and motivations, ranging from theological beliefs to personal convictions and environmental influences. The research employs a descriptive qualitative method with a field-based approach. It combines normative Islamic theological perspectives with sociological analysis, using data collection techniques such as observation, in-depth interviews, and documentation. The findings reveal that students perceive the niqab not merely as a religious obligation to cover one's aurat (parts of the body that should be concealed), but also as a symbol of piety, honor, obedience, and personal ijtihad (independent reasoning) in practicing Islamic teachings. An inclusive campus environment supports these students in engaging freely in both academic and social activities. However, challenges still arise, particularly in the form of stereotypes and perceptions of exclusivity that some individuals associate with niqab wearers. These misconceptions underscore the importance of cross-perspective understanding in addressing this phenomenon. This study is expected to contribute to the development of campus policies that support freedom of expression, uphold mutual respect, and promote a more inclusive, open, and tolerant atmosphere within Islamic higher education institutions—one that embraces the diversity of religious practices and encourages respectful coexistence.

Temuan dari penelitian ini mengindikasikan adanya hubungan pengaruh literasi keuangan terhadap perilaku konsumtif dan kemampuan pengelolaan keuangan di kalangan mahasiswa program studi akuntansi Universitas Pendidikan Indonesia. Penelitian ini dilakukan dengan pendekatan kualitatif metode survei melalui penyebaran kuesioner dengan jumlah responden sebanyak 47 mahasiswa. Penelitian ini menghasilkan temuan bahwa literasi keuangan memiliki hubungan negatif terhadap perilaku konsumtif. Sebaliknya, literasi keuangan memiliki hubungan positif terhadap kemampuan pengelolaan keuangan. Sehingga dapat disimpulkan bahwa mahasiswa dengan tingkat literasi yang baik, cenderung mampu dalam membatasi diri dari perilaku konsumtif dan dapat mengelola keuangannya dengan lebih terstruktur. Temuan ini menegaskan pentingnya literasi keuangan dalam membentuk perilaku keuangan mahasiswa yang bijak.

This study examines the effectiveness of implementing a democratic classroom management model in enhancing student learning motivation at Jambu Public Elementary School 3. A descriptive qualitative approach was employed, with data collected through direct classroom observations and interviews involving teachers and students. The aim was to understand how democratic principles applied in classroom settings could influence students’ motivation, behavior, and engagement in learning activities. The findings reveal that adopting democratic leadership in classroom management creates an inclusive, respectful, and participatory learning environment. Students are encouraged to express opinions, collaborate in decision-making, and take ownership of their learning process. This approach significantly enhances intrinsic motivation, responsibility, and student independence. It also helps reduce passive behavior and fosters a sense of belonging and self-worth among students. The results are in line with several prominent educational theories. According to Self-Determination Theory (Deci & Ryan), autonomy and relatedness are key drivers of motivation, which are facilitated through democratic practices. Vygotsky’s Social Development Theory emphasizes the role of social interaction in learning, which is actively promoted in this model. Carl Rogers’ humanistic approach also supports the creation of a learning climate centered on empathy and student potential, while Rudolf Dreikurs’ Adlerian classroom model advocates for respectful teacher-student relationships and cooperative behavior. Overall, the implementation of a democratic classroom management model is considered effective in promoting both academic achievement and character development at the elementary level. The study recommends broader application of this model in primary education settings to support holistic student growth and to foster a learning culture rooted in mutual respect, responsibility, and student agency.
 

This study aims to evaluate the effectiveness of the use of Canva and Nearpod digital platforms in supporting the strengthening of students' character at the elementary school level. Character education is a fundamental aspect in the formation of students' personalities who have integrity, toughness, and adaptability to the development of the times. In the digital era, interactive learning media is an important means to instill character values in a more interesting and contextual way. The method used is Classroom Action Research (PTK) which is carried out in two cycles, with the research subjects consisting of teachers, class V students, and students' parents. The learning process is designed to blend character education content with the use of Canva as a creative visual medium, as well as Nearpod as an interactive presentation tool that allows students to be active through online quizzes, assignments, and reflections. The results of the study showed a marked increase in students' learning motivation, attitude of responsibility, discipline, cooperation in groups, and the ability to make decisions independently. Parental involvement in digital learning also supports the consistency of character strengthening at home. However, the study also noted several challenges, such as the limitations of technological devices, unstable internet networks, and variations in students' and parents' digital literacy abilities. Recommended solutions include intensive training for teachers in the use of digital media, improved support facilities in schools, as well as a collaborative approach between teachers and parents. Thus, the integrated use of Canva and Nearpod not only supports mastery of academic materials, but also significantly strengthens students' character values holistically. This study is expected to be a reference in the development of digital learning innovations oriented towards character education at the elementary level.

This study examines the legal protection of the owner of the means of transportation in cases of unlawful acts (PMH) related to state deprivation, based on the Study of Decision Number 27/Pdt.G/2019/Pn.Tbk. The main focus of this study is to analyze the legal position of the owner of the transportation facilities who are not directly involved in the crime, but suffer losses due to acts of confiscation by the state. The research method used is empirical normative with a case study approach. The results of the study show that the court in the decision did not provide adequate protection for the civil rights of the owner of the means of transport, even though there was no evidence of direct involvement in the crime. This decision indicates the weak legal protection for third parties in good faith and the importance of strengthening the principle of due process of law in the process of confiscation by the state so as not to violate legitimate civil rights. This study recommends the need for a clearer regulation of the mechanism of objection and restoration of rights for parties aggrieved by acts of state deprivation.

Aqua, as a leading bottled mineral water brand in Indonesia, faces challenges in maintaining its market share amid increasing competition and boycott issues. This study aims to analyze the impact of product quality, product pricing, and brand image on purchasing decisions for Aqua in Kendal City. The research employs both quantitative and qualitative methods. Data collection techniques involve distributing questionnaires to 188 respondents and conducting interviews with 10 respondents. The respondents were selected using purposive sampling based on specific criteria, such as having used Aqua and being aware of the boycott issue. The data were analyzed using multiple linear regression to test the influence of each independent variable on the purchasing decision. The results show that product quality, product pricing, and brand image have a positive and significant impact on Aqua's purchasing decisions. Brand image emerged as the most dominant factor influencing purchasing decisions. Additionally, the majority of informants are highly concerned about the boycott issue and disturbed by the Israeli attacks, which has affected their purchasing decisions. This study recommends that Aqua improve product quality, implement competitive pricing strategies, and strengthen its brand image through innovation and marketing campaigns to maintain customer loyalty. Aqua should also promote its neutral stance publicly, clarifying that it is not involved in the Israel-Palestine issue, in order to maintain public trust in the brand.

In the modern era, approaches to understanding hadith have undergone significant transformations, necessitating more systematic and contextualized methodologies. Thematic hadith studies (maw??‘?) have emerged as a methodological solution capable of integrating the Prophet’s teachings with contemporary realities in a more comprehensive manner. This research aims to examine the concept, history, and development of the thematic methodology in hadith studies. The primary focus is to explore the epistemology of this approach and its implications within modern Islamic academic discourse. This study employs a qualitative method using a library research approach. Data were collected through the analysis of primary and secondary literature, then analyzed using descriptive-analytical and historical-critical methods. The findings indicate that while the thematic method has existed since the classical era, its conceptual maturity has advanced significantly in the contemporary period. This approach has proven effective in addressing the issue of ikhtil?f al-?ad?th, clarifying inter-narration relationships, and expanding the scope of hadith understanding according to the needs of the time. However, its main challenges include potential subjectivity in interpretation and the need for stricter methodologies in validating both sanad and matn. Therefore, thematic hadith studies serve as a bridge between classical understanding and modern academic demands. Its implications extend beyond the development of hadith science to the continued relevance of Islamic teachings in addressing contemporary intellectual and social challenges.